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Lestari</title> <meta name="description" content="Search results for: Mas Ulfah Lestari"> <meta name="keywords" content="Mas Ulfah Lestari"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none 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action="https://publications.waset.org/abstracts/search"> <div id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="Mas Ulfah Lestari"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 32</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Mas Ulfah Lestari</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">32</span> Optimation of Ethanol Extract of Gotu Kola and Majapahit Composition as Natural Antioxidant Source </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mustofa%20Ahda">Mustofa Ahda</a>, <a href="https://publications.waset.org/abstracts/search?q=Fiqri%20Rozi"> Fiqri Rozi</a>, <a href="https://publications.waset.org/abstracts/search?q=Gina%20Noor%20Habibah"> Gina Noor Habibah</a>, <a href="https://publications.waset.org/abstracts/search?q=Mas%20Ulfah%20Lestari"> Mas Ulfah Lestari</a>, <a href="https://publications.waset.org/abstracts/search?q=Tomy%20Hardianto"> Tomy Hardianto</a>, <a href="https://publications.waset.org/abstracts/search?q=Yuni%20Andriani"> Yuni Andriani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The development of natural antioxidants in the Centella asiatica and Majapahit is a great potential. This research has been optimizing the composition of ethanol extract of Centella asiatica and leaves Majapahit as an antioxidants source using measure the free radical scavenging activity of DPPH. The results of the research showed that both the ethanol extract of Centella asiatica and leaves Majapahit has a total content of phenol. It is shown with the ability to reduce reagent Folin Ciocalteu become blue colour. The composition optimization of extract Centella asiatica leaves Majapahit = 30:70 has free radical scavenging activity of DPPH most well compared ethanol extract of Centella asiatica and leaves Majapahit. IC50 values for the composition of ethanol extract of Centella asiatica : leaves Majapahit = 30:70 is 0,103 mg/mL. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=antioxidant%20activity" title="antioxidant activity">antioxidant activity</a>, <a href="https://publications.waset.org/abstracts/search?q=Centella%20asiatica" title=" Centella asiatica"> Centella asiatica</a>, <a href="https://publications.waset.org/abstracts/search?q=Cresentia%20cujete" title=" Cresentia cujete"> Cresentia cujete</a>, <a href="https://publications.waset.org/abstracts/search?q=composition%20extract" title=" composition extract"> composition extract</a> </p> <a href="https://publications.waset.org/abstracts/66718/optimation-of-ethanol-extract-of-gotu-kola-and-majapahit-composition-as-natural-antioxidant-source" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/66718.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">329</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">31</span> Eco-Mini Bag: Mini trash Bag for Children Environment Awareness</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Asep%20Adianto">Asep Adianto</a>, <a href="https://publications.waset.org/abstracts/search?q=Rinda%20Ulfah%20L."> Rinda Ulfah L.</a>, <a href="https://publications.waset.org/abstracts/search?q=Wellya%20Wichi%20M."> Wellya Wichi M.</a>, <a href="https://publications.waset.org/abstracts/search?q=Lasmaria%20Manik"> Lasmaria Manik </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Garbage is the waste result of daily human activity which is in some to countries can leads to a crucial problem. It is realized that garbage can brings to disastrous consequences for the environment and humans. Piles of garbage will cause to overflow disaster and health problems for human being. Basically, garbage can be processed into recycled products or other utilization. However, in some cases, awareness of environment cleanliness by throwing the garbage to the dustbin is still lacking, in both adults and children. Children tend to do things based on their visual observations without thinking about the impact of their actions. Associated with awareness of cleanliness, children often littering due to the reluctance on throwing garbage to the dustbin because in some place, it’s not that easy to find where the dustbin is. The obstacle should be accommodated by making some kind of compatible dustbin. In addition, the influence of the social environment and lack of education to environmental concerns makes it even worse. Therefore, we need a method to educate people, especially children, to always care about the environment and neighborhood they live in. Because of the intended target is children, the required method should be fun, easy to do, and it doesn’t contain any compulsion act. Therefore, Eco-Mini Bag is one of considerable method to educate children in society to become more aware about environment cleanliness. Eco-Mini bag is a kind of compatible dustbin and it’s going to prevent the children not to throwing garbage in reckless way. In brief, Eco-Mini bag can increase the environment awareness on children and the whole society through exciting and convenience way. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=children" title="children">children</a>, <a href="https://publications.waset.org/abstracts/search?q=eco-mini%20bag" title=" eco-mini bag"> eco-mini bag</a>, <a href="https://publications.waset.org/abstracts/search?q=environment" title=" environment"> environment</a>, <a href="https://publications.waset.org/abstracts/search?q=garbage" title=" garbage "> garbage </a> </p> <a href="https://publications.waset.org/abstracts/28540/eco-mini-bag-mini-trash-bag-for-children-environment-awareness" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28540.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">317</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">30</span> Attitude of Beef Cattle Farmers toward Biosecurity Practices</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Veronica%20Sri%20Lestari">Veronica Sri Lestari</a>, <a href="https://publications.waset.org/abstracts/search?q=Sitti%20Nurani%20Sirajuddin"> Sitti Nurani Sirajuddin</a>, <a href="https://publications.waset.org/abstracts/search?q=Kasmiyati%20Kasim"> Kasmiyati Kasim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The purpose of this research was to know the attitude of beef cattle farmers toward bio security practices. This research was conducted in Barru regency, South Sulawesi province, Indonesia, in 2014. Thirty beef cattle farmers were selected through random sampling. Primary and secondary data were collected through report, observation and deep interview by using questionnaire. Bio security practices consisted of 35 questions. Every answer of the question was scored based on three categories: score 1 (not important), score 2 (important) and 3 (very important). The results of this research showed that the attitude of beef cattle farmers toward bio security practices was categorized as important. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=attitude" title="attitude">attitude</a>, <a href="https://publications.waset.org/abstracts/search?q=beef%20cattle" title=" beef cattle"> beef cattle</a>, <a href="https://publications.waset.org/abstracts/search?q=biosecurity" title=" biosecurity"> biosecurity</a>, <a href="https://publications.waset.org/abstracts/search?q=farmers" title=" farmers "> farmers </a> </p> <a href="https://publications.waset.org/abstracts/27793/attitude-of-beef-cattle-farmers-toward-biosecurity-practices" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/27793.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">296</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">29</span> Rapid Evidence Remote Acquisition in High-Availability Server and Storage System for Digital Forensic to Unravel Academic Crime</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bagus%20Hanindhito">Bagus Hanindhito</a>, <a href="https://publications.waset.org/abstracts/search?q=Fariz%20Azmi%20Pratama"> Fariz Azmi Pratama</a>, <a href="https://publications.waset.org/abstracts/search?q=Ulfah%20Nadiya"> Ulfah Nadiya</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nowadays, digital system including, but not limited to, computer and internet have penetrated the education system widely. Critical information such as students’ academic records is stored in a server off- or on-campus. Although several countermeasures have been taken to protect the vital resources from outsider attack, the defense from insiders threat is not getting serious attention. At the end of 2017, a security incident that involved academic information system in one of the most respected universities in Indonesia affected not only the reputation of the institution and its academia but also academic integrity in Indonesia. In this paper, we will explain our efforts in investigating this security incident where we have implemented a novel rapid evidence remote acquisition method in high-availability server and storage system thus our data collection efforts do not disrupt the academic information system and can be conducted remotely minutes after incident report has been received. The acquired evidence is analyzed during digital forensic by constructing the model of the system in an isolated environment which allows multiple investigators to work together. In the end, the suspect is identified as a student (insider), and the investigation result is used by prosecutors to charge the suspect as an academic crime. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=academic%20information%20system" title="academic information system">academic information system</a>, <a href="https://publications.waset.org/abstracts/search?q=academic%20crime" title=" academic crime"> academic crime</a>, <a href="https://publications.waset.org/abstracts/search?q=digital%20forensic" title=" digital forensic"> digital forensic</a>, <a href="https://publications.waset.org/abstracts/search?q=high-availability%20server%20and%20storage" title=" high-availability server and storage"> high-availability server and storage</a>, <a href="https://publications.waset.org/abstracts/search?q=rapid%20evidence%20remote%20acquisition" title=" rapid evidence remote acquisition"> rapid evidence remote acquisition</a>, <a href="https://publications.waset.org/abstracts/search?q=security%20incident" title=" security incident"> security incident</a> </p> <a href="https://publications.waset.org/abstracts/95626/rapid-evidence-remote-acquisition-in-high-availability-server-and-storage-system-for-digital-forensic-to-unravel-academic-crime" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/95626.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">152</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28</span> Factors Affecting Consumers’ Willingness to Pay for Chicken Meat from Biosecure Farms</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Veronica%20Sri%20Lestari">Veronica Sri Lestari</a>, <a href="https://publications.waset.org/abstracts/search?q=Asmuddin%20Natsir"> Asmuddin Natsir</a>, <a href="https://publications.waset.org/abstracts/search?q=Hasmida%20Karim"> Hasmida Karim</a>, <a href="https://publications.waset.org/abstracts/search?q=Ian%20Patrick"> Ian Patrick</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The research aimed at investigating the factors affecting consumers’ willingness to pay for chicken meat from biosecure farms. The research was conducted in Makassar City, South Sulawesi Province, Indonesia. Samples were taken using random sampling technique in two supermarkets namely Lotte Mart and Gelael. Total samples were 50 respondents which comprised the chicken meat consumers. To find out the consumers’ willingness to pay for chicken meat from the biosecure farms, the contingent valuation method was utilized. Data were collected through interviews and questionnaires. Probit Logistic was estimated to examine the factors affecting the consumers’ willingness to pay for at the premium price for chicken meat from the biosecure farms. The research indicates that the education and income affect significantly the consumers’ willingness to pay for chicken meat from the biosecure farms (P < 0.05). The results of the study will be beneficial for the policy makers, producers, consumers and those conducting research. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biosecure" title="biosecure">biosecure</a>, <a href="https://publications.waset.org/abstracts/search?q=chicken" title=" chicken"> chicken</a>, <a href="https://publications.waset.org/abstracts/search?q=farms" title=" farms"> farms</a>, <a href="https://publications.waset.org/abstracts/search?q=consumer" title=" consumer"> consumer</a>, <a href="https://publications.waset.org/abstracts/search?q=willingness-to-pay" title=" willingness-to-pay"> willingness-to-pay</a> </p> <a href="https://publications.waset.org/abstracts/48035/factors-affecting-consumers-willingness-to-pay-for-chicken-meat-from-biosecure-farms" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/48035.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">274</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">27</span> D-Care: Diabetes Care Application to Enhance Diabetic Awareness to Diabetes in Indonesia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Samara%20R.%20Dania">Samara R. Dania</a>, <a href="https://publications.waset.org/abstracts/search?q=Maulana%20S.%20Aji"> Maulana S. Aji</a>, <a href="https://publications.waset.org/abstracts/search?q=Dewi%20Lestari"> Dewi Lestari</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Diabetes is a common disease in Indonesia. One of the risk factors of diabetes is an unhealthy diet which is consuming food that contains too much glucose, one of glucose sources presents in food containing carbohydrate. The purpose of this study is to identify the amount of glucose level in the consumed food. The authors use literature studies for this research method. For the results of this study, the authors expect diabetics to be more aware of diabetes by applying daily dietary regulation through D-Care. D-Care is an application that can enhance people awareness to diabetes in Indonesia. D-Care provides two menus; there are nutrition calculation and healthy food. Nutrition calculation menu is used for knowing estimated glucose intake level by calculating food that consumed each day. Whereas healthy food menu, it provides a combination of healthy food menu for diabetic. The conclusion is D-Care is useful to be used for reducing diabetes prevalence in Indonesia. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=D-Care" title="D-Care">D-Care</a>, <a href="https://publications.waset.org/abstracts/search?q=diabetes" title=" diabetes"> diabetes</a>, <a href="https://publications.waset.org/abstracts/search?q=awareness" title=" awareness"> awareness</a>, <a href="https://publications.waset.org/abstracts/search?q=healthy%20food" title=" healthy food"> healthy food</a> </p> <a href="https://publications.waset.org/abstracts/75889/d-care-diabetes-care-application-to-enhance-diabetic-awareness-to-diabetes-in-indonesia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/75889.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">419</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">26</span> Some Factors Affecting to Farm Size of Duck Farming</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Veronica%20Sri%20Lestari">Veronica Sri Lestari</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmad%20Ramadhan%20Siregar"> Ahmad Ramadhan Siregar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The purpose of this research was to know some factors affecting farm size of duck farming (case study in Pinrang district, South Sulawesi). This research was conducted in 2013. Total sample was 45 duck farmers which were selected from 6 regions in Mattiro Sompe sub district, Pinrang district, South Sulawesi province through stratified random sampling. Data were collected through interviews using questionnaires and observation. Multiple regression equation was used to analyze the data. Dependent variable was duck population, while age of respondents, farming experience, land size, education, and income level as independent variables. This research revealed that R2 was 0.920. Simultaneously, age of respondents, farming experience, land size, education, and income level significantly influenced farm size of duck farming (P < 1%). Only income influenced farm size of duck farming (P < 1%). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=duck" title="duck">duck</a>, <a href="https://publications.waset.org/abstracts/search?q=dry%20system" title=" dry system"> dry system</a>, <a href="https://publications.waset.org/abstracts/search?q=factors" title=" factors"> factors</a>, <a href="https://publications.waset.org/abstracts/search?q=farm-size" title=" farm-size"> farm-size</a> </p> <a href="https://publications.waset.org/abstracts/34034/some-factors-affecting-to-farm-size-of-duck-farming" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/34034.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">504</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">25</span> Egg Production Performance of Old Laying Hen Fed Dietary Turmeric Powder</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=D.%20P.%20Rahardja">D. P. Rahardja</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Rahman%20Hakim"> M. Rahman Hakim</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20Sri%20Lestari"> V. Sri Lestari</a> </p> <p class="card-text"><strong>Abstract:</strong></p> An experiment was conducted to elucidate the effects of turmeric powder supplementation on egg production performance of old laying hens (104 weeks of age). There were 40 hens of Hysex Brown strain used in the study. They were caged individually, and randomly divided into 4 treatment groups of diet containing 0 (control), 1, 2 and 4 % oven dried turmeric powder for 3 periods of 4 weeks; Egg production (% hen day) and feed intake of the 4 treatment groups at the commencement of the experiment were not significantly different. In addition to egg production performance (%HD and egg weight), feed and water intakes were measured daily. The results indicated that feed intakes of the hen were significantly lowered when 4% turmeric powder supplemented, while there were no significant changes in water intakes. Egg production (%HD) were significantly increased and maintained at a higher level by turmeric powder supplementation up to 4% compared with the control, while the weight of eggs were not significantly affected. The research markedly demonstrated that supplementation of turmeric powder up to 4% could improve and maintain egg production performance of the old laying hen. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=curcumin" title="curcumin">curcumin</a>, <a href="https://publications.waset.org/abstracts/search?q=feed%20and%20water%20intake" title=" feed and water intake"> feed and water intake</a>, <a href="https://publications.waset.org/abstracts/search?q=old%20laying%20hen" title=" old laying hen"> old laying hen</a>, <a href="https://publications.waset.org/abstracts/search?q=egg%20production" title=" egg production"> egg production</a> </p> <a href="https://publications.waset.org/abstracts/32902/egg-production-performance-of-old-laying-hen-fed-dietary-turmeric-powder" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/32902.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">482</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">24</span> Kinetics of Growth Rate of Microalga: The Effect of Carbon Dioxide Concentration </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Retno%20Ambarwati%20Sigit%20Lestari">Retno Ambarwati Sigit Lestari</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Microalga is one of the organisms that can be considered ideal and potential for raw material of bioenergy production, because the content of lipids in microalga is relatively high. Microalga is an aquatic organism that produces complex organic compounds from inorganic molecules using carbon dioxide as a carbon source, and sunlight for energy supply. Microalga-CO₂ fixation has potential advantages over other carbon captures and storage approaches, such as wide distribution, high photosynthetic rate, good environmental adaptability, and ease of operation. The rates of growth and CO₂ capture of microalga are influenced by CO₂ concentration and light intensity. This study quantitatively investigates the effects of CO₂ concentration on the rates of growth and CO₂ capture of a type of microalga, cultivated in bioreactors. The works include laboratory experiments as well as mathematical modelling. The mathematical models were solved numerically and the accuracy of the model was tested by the experimental data. It turned out that the mathematical model proposed can well quantitatively describe the growth and CO₂ capture of microalga, in which the effects of CO₂ concentration can be observed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Microalga" title="Microalga">Microalga</a>, <a href="https://publications.waset.org/abstracts/search?q=CO2%20concentration" title=" CO2 concentration"> CO2 concentration</a>, <a href="https://publications.waset.org/abstracts/search?q=photobioreactor" title=" photobioreactor"> photobioreactor</a>, <a href="https://publications.waset.org/abstracts/search?q=mathematical%20model" title=" mathematical model "> mathematical model </a> </p> <a href="https://publications.waset.org/abstracts/106192/kinetics-of-growth-rate-of-microalga-the-effect-of-carbon-dioxide-concentration" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/106192.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">125</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">23</span> Beef Cattle Farmers Perception toward Urea Mineral Molasses Block</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Veronica%20Sri%20Lestari">Veronica Sri Lestari</a>, <a href="https://publications.waset.org/abstracts/search?q=Djoni%20Prawira%20Rahardja"> Djoni Prawira Rahardja</a>, <a href="https://publications.waset.org/abstracts/search?q=Tanrigiling%20Rasyid"> Tanrigiling Rasyid</a>, <a href="https://publications.waset.org/abstracts/search?q=Aslina%20Asnawi"> Aslina Asnawi</a>, <a href="https://publications.waset.org/abstracts/search?q=Ikrar%20Muhammad%20Saleh"> Ikrar Muhammad Saleh</a>, <a href="https://publications.waset.org/abstracts/search?q=Ilham%20Rasyid"> Ilham Rasyid</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Urea Mineral Molasses Block is very important for beef cattle, because it can increase beef production. The purpose of this research was to know beef cattle farmers’ perception towards Urea Mineral Molasses Block (UMMB). This research was conducted in Gowa Regency, South Sulawesi, Indonesia in 2016. The population of this research were all beef cattle farmers. Sample was chosen through purposive sampling. Data were collected through observation and face to face with deep interview using questionnaire. Variables of perception consisted of relative advantage, compatibility, complexity, observability and triability. There were 10 questions. The answer for each question was scored by 1, 2, 3 which refer to disagree, agree enough, strongly agree. The data were analyzed descriptively using frequency distribution. The research revealed that beef cattle farmers’ perception towards UMMB was categorized as strongly agree. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=beef%20cattle" title="beef cattle">beef cattle</a>, <a href="https://publications.waset.org/abstracts/search?q=farmers" title=" farmers"> farmers</a>, <a href="https://publications.waset.org/abstracts/search?q=perception" title=" perception"> perception</a>, <a href="https://publications.waset.org/abstracts/search?q=urea%20mineral%20molasses%20block" title=" urea mineral molasses block"> urea mineral molasses block</a> </p> <a href="https://publications.waset.org/abstracts/56899/beef-cattle-farmers-perception-toward-urea-mineral-molasses-block" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/56899.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">347</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">22</span> Superoxide Dismutase Activity of Male Rats after Administration of Extract and Nanoparticle of Ginger Torch Flower</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tresna%20Lestari">Tresna Lestari</a>, <a href="https://publications.waset.org/abstracts/search?q=Tita%20Nofianti"> Tita Nofianti</a>, <a href="https://publications.waset.org/abstracts/search?q=Ade%20Yeni%20Aprilia"> Ade Yeni Aprilia</a>, <a href="https://publications.waset.org/abstracts/search?q=Lilis%20Tuslinah"> Lilis Tuslinah</a>, <a href="https://publications.waset.org/abstracts/search?q=Ruswanto%20Ruswanto"> Ruswanto Ruswanto</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nanoparticle formulation is often used to improve drug absorptivity, thus increasing the sharpness of the action. Ginger torch flower extract was formulated into nanoparticle form using poloxamer 1, 3 and 5%. The nanoparticle was then characterized by its particle size, polydispersity index, zeta potential, entrapment efficiency and morphological form by SEM. The result shows that nanoparticle formulations have particle size 134.7-193.1 nm, polydispersity index less than 0.5 for all formulations, zeta potential -41.0 - (-24.3) mV and entrapment efficiency 89.93-97.99 against flavonoid content with a soft surface and spherical form of particles. Methanolic extract of ginger torch flower could enhance superoxide dismutase activity by 1,3183 U/mL in male rats. Nanoparticle formulation of ginger torch extract is expected to increase the capability of the drug to enhance superoxide dismutase activity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=superoxide%20dismutase" title="superoxide dismutase">superoxide dismutase</a>, <a href="https://publications.waset.org/abstracts/search?q=ginger%20torch%20flower" title=" ginger torch flower"> ginger torch flower</a>, <a href="https://publications.waset.org/abstracts/search?q=nanoparticle" title=" nanoparticle"> nanoparticle</a>, <a href="https://publications.waset.org/abstracts/search?q=poloxamer" title=" poloxamer"> poloxamer</a> </p> <a href="https://publications.waset.org/abstracts/91992/superoxide-dismutase-activity-of-male-rats-after-administration-of-extract-and-nanoparticle-of-ginger-torch-flower" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/91992.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">159</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">21</span> Characterization of Screening Staphylococcus aureus Isolates Harboring mecA Genes among Intensive Care Unit Patients from Tertiary Care Hospital in Jakarta, Indonesia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Delly%20C.%20Lestari">Delly C. Lestari</a>, <a href="https://publications.waset.org/abstracts/search?q=Linosefa"> Linosefa</a>, <a href="https://publications.waset.org/abstracts/search?q=Ardiana%20Kusumaningrum"> Ardiana Kusumaningrum</a>, <a href="https://publications.waset.org/abstracts/search?q=Andi%20Yasmon"> Andi Yasmon</a>, <a href="https://publications.waset.org/abstracts/search?q=Anis%20Karuniawati"> Anis Karuniawati</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The objective of this study is to determine the prevalence of methicillin-resistant <em>Staphylococcus aureus</em> (MRSA) harboring mecA genes from screening isolates among intensive care unit (ICU) patients. All MRSA screening isolates from ICU’s patients of Cipto Mangunkusumo Hospital during 2011 and 2014 were included in this study. Identification and susceptibility test was performed using Vitek2 system (Biomereux®). PCR was conducted to characterize the SCCmec of <em>S. aureus</em> harboring the mecA gene on each isolate. Patient’s history of illness was traced through medical record. 24 isolates from 327 screening isolates were MRSA positive (7.3%). From PCR, we found 17 (70.8%) isolates carrying SCCmec type I, 3 (12.5%) isolates carrying SCCmec type III, and 2 (8.3%) isolates carrying SCCmec type IV. In conclusion, SCCmec type I is the most prevalent MRSA colonization among ICU patients in Cipto Mangunkusumo Hospital. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=MRSA" title="MRSA">MRSA</a>, <a href="https://publications.waset.org/abstracts/search?q=mecA%20genes" title=" mecA genes"> mecA genes</a>, <a href="https://publications.waset.org/abstracts/search?q=ICU" title=" ICU"> ICU</a>, <a href="https://publications.waset.org/abstracts/search?q=colonization" title=" colonization"> colonization</a> </p> <a href="https://publications.waset.org/abstracts/61257/characterization-of-screening-staphylococcus-aureus-isolates-harboring-meca-genes-among-intensive-care-unit-patients-from-tertiary-care-hospital-in-jakarta-indonesia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/61257.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">237</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">20</span> Bio-Nano Mask: Antivirus and Antimicrobial Mouth Mask Coating with Nano-TiO2 and Anthocyanin Utilization as an Effective Solution of High ARI Patients in Riau</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Annisa%20Ulfah%20Pristya">Annisa Ulfah Pristya</a>, <a href="https://publications.waset.org/abstracts/search?q=Andi%20Setiawan"> Andi Setiawan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Indonesia placed in sixth rank total Acute Respiratory Infection (ARI) patient in the world and Riau as one of the province with the highest number of people with respiratory infection in Indonesia reached 37 thousand people. Usually society using a mask as prevention action. Unfortunately the commercial mouth mask only can work maximum for 4 hours and the pores are too large to filter out microorganisms and viruses carried by infectious droplets nucleated 1-5 μm. On the other hand, Indonesia is rich with Titanium dioxide (TiO2) and purple sweet potato anthocyanin pigment. Therefore, offered Bio-nano-mask which is a antimicrobial and antiviral mouth mask with Nano-TiO2 coating and purple sweet potato anthocyanins utilization as an effective solution to high ARI patients in Riau, which has the advantage of the mask surface can’t be attached by infectious droplets, self-cleaning and have anthocyanins biosensors that give visual response can be understood easily by the general public in the form of a mask color change from blue/purple to pink when acid levels increase. Acid level is an indicator of microorganisms accumulation in the mouth and surrounding areas. Bio-nano mask making process begins with the preparation (design, Nano-TiO2 liquid preparation, anthocyanins biosensors manufacture) and then superimposing the Nano-TiO2 on the outer surface of spunbond color using a sprayer, then superimposing anthocyanins biosensors film on the Meltdown surface, making bio nano-mask and it pack. Bio-nano mask has the advantage is effectively preventing pathogenic microorganisms and infectious droplets and has accumulated indicator microorganisms that color changes which easily observed by the common people though. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=anthocyanins" title="anthocyanins">anthocyanins</a>, <a href="https://publications.waset.org/abstracts/search?q=ARI" title=" ARI"> ARI</a>, <a href="https://publications.waset.org/abstracts/search?q=nano-TiO2%20liquid" title=" nano-TiO2 liquid"> nano-TiO2 liquid</a>, <a href="https://publications.waset.org/abstracts/search?q=self%20cleaning" title=" self cleaning"> self cleaning</a> </p> <a href="https://publications.waset.org/abstracts/26719/bio-nano-mask-antivirus-and-antimicrobial-mouth-mask-coating-with-nano-tio2-and-anthocyanin-utilization-as-an-effective-solution-of-high-ari-patients-in-riau" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/26719.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">568</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">19</span> Maintaining the Formal Type of West Java's Heritage Language with Sundanese Language Lesson in Senior High School</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dinda%20N.%20Lestari">Dinda N. Lestari</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Sundanese language is one of heritage language in Indonesia that must be maintained especially the formal type of it because teenagers nowadays do not speak Sundanese language formally in their daily lives. To maintain it, Cultural and Education Ministry of Indonesia has input Sundanese language lesson at senior high school in West Java area. The aim of this study was to observe whether the existence of Sundanese language lesson in senior high school in the big town of Karawang, West Java - Indonesia give the contribution to the formal type of Sundanese language maintenance or not. For gathering the data, the researcher interviewed the senior high school students who have learned Sundanese language to observe their acquisition of it. As a result of the interview, the data was presented in qualitative research by using the interviewing method. Then, the finding indicated that the existence of Sundanese language in Senior High School also the educational program which is related to it, for instance, Kemis Nyunda seemed to do not effective enough in maintaining the formal type of Sundanese language. Therefore, West Java government must revise the learning strategy of it, including the role of the Sundanese language teacher. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=heritage%20language" title="heritage language">heritage language</a>, <a href="https://publications.waset.org/abstracts/search?q=language%20maintenance%20and%20shift" title=" language maintenance and shift"> language maintenance and shift</a>, <a href="https://publications.waset.org/abstracts/search?q=senior%20high%20school" title=" senior high school"> senior high school</a>, <a href="https://publications.waset.org/abstracts/search?q=Sundanese%20language" title=" Sundanese language"> Sundanese language</a>, <a href="https://publications.waset.org/abstracts/search?q=Sundanese%20language%20lesson" title=" Sundanese language lesson"> Sundanese language lesson</a> </p> <a href="https://publications.waset.org/abstracts/104192/maintaining-the-formal-type-of-west-javas-heritage-language-with-sundanese-language-lesson-in-senior-high-school" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/104192.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">149</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18</span> Antioxidant Activity of Nanoparticle of Etlingera elatior (Jack) R.M.Sm Flower Extract on Liver and Kidney of Rats</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tita%20Nofianti">Tita Nofianti</a>, <a href="https://publications.waset.org/abstracts/search?q=Tresna%20Lestari"> Tresna Lestari</a>, <a href="https://publications.waset.org/abstracts/search?q=Ade%20Y.%20Aprillia"> Ade Y. Aprillia</a>, <a href="https://publications.waset.org/abstracts/search?q=Lilis%20Tuslinah"> Lilis Tuslinah</a>, <a href="https://publications.waset.org/abstracts/search?q=Ruswanto%20Ruswanto"> Ruswanto Ruswanto</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nanoparticle technology gives a chance for drugs, especially natural based product, to give better activities than in its macromolecule form. The ginger torch is known to have activities as an antioxidant, antimicrobial, anticancer, etc. In this research, ginger torch flower extract was nanoparticlized using poloxamer 1, 3, and 5%. Nanoparticle was charaterized for its particle size, polydispersity index, zeta potential, entrapment efficiency, and morphological form by SEM (scanning electron microscope). The result shows that nanoparticle formulations have particle size 134.7-193.1 nm, polydispersity index is less than 0.5 for all formulations, zeta potential is -41.0 to (-24.3) mV, and entrapment efficiency is 89.93 to 97.99 against flavonoid content with a soft surface and spherical form of particles. Methanolic extract of ginger torch flower could enhance superoxide dismutase activity by 1,3183 U/mL in male rats. Nanoparticle formulation of ginger torch extract is expected to increase the capability of drug to enhance superoxide dismutase activity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=superoxide%20dismutase" title="superoxide dismutase">superoxide dismutase</a>, <a href="https://publications.waset.org/abstracts/search?q=ginger%20torch%20flower" title=" ginger torch flower"> ginger torch flower</a>, <a href="https://publications.waset.org/abstracts/search?q=nanoparticle" title=" nanoparticle"> nanoparticle</a>, <a href="https://publications.waset.org/abstracts/search?q=poloxamer" title=" poloxamer "> poloxamer </a> </p> <a href="https://publications.waset.org/abstracts/92307/antioxidant-activity-of-nanoparticle-of-etlingera-elatior-jack-rmsm-flower-extract-on-liver-and-kidney-of-rats" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/92307.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">207</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">17</span> Establishment of Aquaculture Cooperative for Sustainable Local People Economic Welfare in Jatiluhur, West Java, Indonesia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aisyah%20Nurfitria">Aisyah Nurfitria</a>, <a href="https://publications.waset.org/abstracts/search?q=Alifa%20Rahmadia%20Putri"> Alifa Rahmadia Putri</a>, <a href="https://publications.waset.org/abstracts/search?q=Andini%20Lestari"> Andini Lestari</a>, <a href="https://publications.waset.org/abstracts/search?q=Kartika%20Sukmatullahi%20Hasanah"> Kartika Sukmatullahi Hasanah</a>, <a href="https://publications.waset.org/abstracts/search?q=Mutiara%20Mayang%20Oktavia"> Mutiara Mayang Oktavia</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The research aims to describe and analyze the background and condition of Jatiluhur Dam, West Java, Indonesia. The Jatiluhur Dam as known as the biggest dam in West Java has huge fisheries resource, which is supposed to assure the local people appropriateness of living. Unfortunately based on this field research, the local people are living a life in under poverty line. This study focuses on increasing local people economic welfare through “Aquaculture Cooperative” implementation. Empower and diversify income of local people is the purpose of this study. In the same way, this study also focuses on the sustainable local people’s livelihoods. In order to obtain the sustainability of them, recovering the fisheries of Jatiluhur Dam is the part of “Aquaculture Cooperative” program. Method that is used in this research is a qualitative approach by literature review and in-depth interview through direct observation as data collecting techniques. Factors such as social and economic condition are also considered in order to know how “Aquaculture Cooperative” able to accepted by local people. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aquaculture%20cooperative" title="aquaculture cooperative">aquaculture cooperative</a>, <a href="https://publications.waset.org/abstracts/search?q=economic%20welfare" title=" economic welfare"> economic welfare</a>, <a href="https://publications.waset.org/abstracts/search?q=Jatiluhur%20fisheries" title=" Jatiluhur fisheries"> Jatiluhur fisheries</a>, <a href="https://publications.waset.org/abstracts/search?q=West%20Java" title=" West Java "> West Java </a> </p> <a href="https://publications.waset.org/abstracts/22728/establishment-of-aquaculture-cooperative-for-sustainable-local-people-economic-welfare-in-jatiluhur-west-java-indonesia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/22728.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">447</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">16</span> Sulfide Removal from Liquid Using Biofilm on Packed Bed of Salak Fruit Seeds </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Retno%20Ambarwati%20Sigit%20Lestari">Retno Ambarwati Sigit Lestari</a>, <a href="https://publications.waset.org/abstracts/search?q=Wahyudi%20Budi%20Sediawan"> Wahyudi Budi Sediawan</a>, <a href="https://publications.waset.org/abstracts/search?q=Sarto%20Sarto"> Sarto Sarto</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study focused on the removal of sulfide from liquid solution using biofilm on packed bed of salak fruit seeds. Biofilter operation of 444 hours consists of 6 phases of operation. Each phase lasted for approximately 72 hours to 82 hours and run at various inlet concentration and flow rate. The highest removal efficiency is 92.01%, at the end of phase 7 at the inlet concentration of 60 ppm and the flow rate of 30 mL min-1. Mathematic model of sulfide removal was proposed to describe the operation of biofilter. The model proposed can be applied to describe the removal of sulfide liquid using biofilter in packed bed. The simulation results the value of the parameters in process. The value of the rate maximum spesific growth is 4.15E-8 s-1, Saturation constant is 9.1E-8 g cm-3, mass transfer coefisient of liquid is 0.5 cm s-1, Henry’s constant is 0.007, and mass of microorganisms growth to mass of sulfide comsumed is 30. The value of the rate maximum spesific growth in early process is 0.00000004 s-1. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biofilm" title="biofilm">biofilm</a>, <a href="https://publications.waset.org/abstracts/search?q=packed%20bed" title=" packed bed"> packed bed</a>, <a href="https://publications.waset.org/abstracts/search?q=removal" title=" removal"> removal</a>, <a href="https://publications.waset.org/abstracts/search?q=sulfide" title=" sulfide"> sulfide</a>, <a href="https://publications.waset.org/abstracts/search?q=salak%20fruit%20seeds." title=" salak fruit seeds. "> salak fruit seeds. </a> </p> <a href="https://publications.waset.org/abstracts/75324/sulfide-removal-from-liquid-using-biofilm-on-packed-bed-of-salak-fruit-seeds" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/75324.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">194</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15</span> The Correlation of Total Phenol Content with Free Radicals Scavenging Activity and Effect of Ethanol Concentration in Extraction Process of Mangosteen Rind (Garcinia mangostana)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ririn%20Lestari%20Sri%20Rahayu">Ririn Lestari Sri Rahayu</a>, <a href="https://publications.waset.org/abstracts/search?q=Mustofa%20Ahda"> Mustofa Ahda</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The use of synthetic antioxidants often causes a negative effect on health and increases the incidence of carcinogenesis. Development of the natural antioxidants should be investigated. However, natural antioxidants have a low toxicity and are safe for human consumption. Ethanol extract of mangosteen rind (<em>Garcinia mangostana</em>) contains natural antioxidant compounds that have various pharmacological activities. Antioxidants from the ethanol extract of mangosteen rind have free radicals scavenging activities. The scavenging activity of ethanol extract of mangosteen rind was determined by DPPH method. The phenolic compound from the ethanol extract of mangosteen rind is determined with Folin-Ciocalteu method. The results showed that the absolute ethanol extract of mangosteen rind has IC<sub>50</sub> of 40.072 ug/mL. The correlation of total phenols content with free radical scavenging activity has an equation y: 5.207x + 205.51 and determination value (R<sup>2</sup>) of 0.9329. Total phenols content from the ethanol extract of mangosteen rind has a good correlation with free radicals scavenging activity of DPPH. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Antioxidant" title="Antioxidant">Antioxidant</a>, <a href="https://publications.waset.org/abstracts/search?q=Garcinia%20mangostana" title=" Garcinia mangostana"> Garcinia mangostana</a>, <a href="https://publications.waset.org/abstracts/search?q=Inhibition%20concentration%2050%25" title=" Inhibition concentration 50%"> Inhibition concentration 50%</a>, <a href="https://publications.waset.org/abstracts/search?q=Phenolic." title=" Phenolic."> Phenolic.</a> </p> <a href="https://publications.waset.org/abstracts/43404/the-correlation-of-total-phenol-content-with-free-radicals-scavenging-activity-and-effect-of-ethanol-concentration-in-extraction-process-of-mangosteen-rind-garcinia-mangostana" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/43404.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">361</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">14</span> Kinetics of Hydrogen Sulfide Removal from Biogas Using Biofilm on Packed Bed of Salak Fruit Seeds</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Retno%20A.%20S.%20Lestari">Retno A. S. Lestari</a>, <a href="https://publications.waset.org/abstracts/search?q=Wahyudi%20B.%20Sediawan"> Wahyudi B. Sediawan</a>, <a href="https://publications.waset.org/abstracts/search?q=Siti%20Syamsiah"> Siti Syamsiah</a>, <a href="https://publications.waset.org/abstracts/search?q=Sarto"> Sarto</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Sulfur-oxidizing bacteria were isolated and then grown on salak fruit seeds forming a biofilm on the surface. Their performances in sulfide removal were experimentally observed. In doing so, the salak fruit seeds containing biofilm were then used as packing material in a cylinder. Biogas obtained from biological treatment, which contains 27.95 ppm of hydrogen sulfide was flown through the packed bed. The hydrogen sulfide from the biogas was absorbed in the biofilm and then degraded by the microbes in the biofilm. The hydrogen sulfide concentrations at a various axial position and various times were analyzed. A set of simple kinetics model for the rate of the sulfide removal and the bacterial growth was proposed. Since the biofilm is very thin, the sulfide concentration in the Biofilm at a certain axial position is assumed to be uniform. The simultaneous ordinary differential equations obtained were then solved numerically using Runge-Kutta method. The values of the parameters were also obtained by curve-fitting. The accuracy of the model proposed was tested by comparing the calculation results using the model with the experimental data obtained. It turned out that the model proposed can describe the removal of sulfide liquid using bio-filter in the packed bed. The biofilter could remove 89,83 % of the hydrogen sulfide in the feed at 2.5 hr of operation and biogas flow rate of 30 L/hr. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=sulfur-oxidizing%20bacteria" title="sulfur-oxidizing bacteria">sulfur-oxidizing bacteria</a>, <a href="https://publications.waset.org/abstracts/search?q=salak%20fruit%20seeds" title=" salak fruit seeds"> salak fruit seeds</a>, <a href="https://publications.waset.org/abstracts/search?q=biofilm" title=" biofilm"> biofilm</a>, <a href="https://publications.waset.org/abstracts/search?q=packing%20material" title=" packing material"> packing material</a>, <a href="https://publications.waset.org/abstracts/search?q=biogas" title=" biogas"> biogas</a> </p> <a href="https://publications.waset.org/abstracts/41726/kinetics-of-hydrogen-sulfide-removal-from-biogas-using-biofilm-on-packed-bed-of-salak-fruit-seeds" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/41726.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">222</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">13</span> Hydrogen Sulfide Removal from Biogas Using Biofilm on Packed Bed of Salak Fruit Seeds</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Retno%20A.%20S.%20Lestari">Retno A. S. Lestari</a>, <a href="https://publications.waset.org/abstracts/search?q=Wahyudi%20B.%20Sediawan"> Wahyudi B. Sediawan</a>, <a href="https://publications.waset.org/abstracts/search?q=Siti%20Syamsiah"> Siti Syamsiah</a>, <a href="https://publications.waset.org/abstracts/search?q=Sarto"> Sarto</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Sulfur-oxidizing bacteria were isolated and then grown on snakefruits seeds forming biofilm. Their performance in sulfide removal were experimentally observed. Snakefruit seeds were then used as packing material in a cylindrical tube. Biological treatment of hydrogen sulfide from biogas was investigated using biofilm on packed bed of snakefruits seeds. Biogas containing 27,9512 ppm of hydrogen sulfide was flown through the bed. Then the hydrogen sulfide concentrations in the outlet at various times were analyzed. A set of simple kinetics model for the rate of the sulfide removal and the bacterial growth was proposed. The axial sulfide concentration gradient in the flowing liquid are assumed to be steady-state. Mean while the biofilm grows on the surface of the seeds and the oxidation takes place in the biofilm. Since the biofilm is very thin, the sulfide concentration in the biofilm is assumed to be uniform. The simultaneous ordinary differential equations obtained were then solved numerically using Runge-Kutta method. The acuracy of the model proposed was tested by comparing the calcultion results using the model with the experimental data obtained. It turned out that the model proposed can be applied to describe the removal of sulfide liquid using bio-filter in packed bed. The values of the parameters were also obtained by curve-fitting. The biofilter could remove 89,83 % of the inlet of hydrogen sulfide from biogas for 2.5 h, and optimum loading of 8.33 ml/h. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sulfur-oxidizing%20bacteria" title="Sulfur-oxidizing bacteria">Sulfur-oxidizing bacteria</a>, <a href="https://publications.waset.org/abstracts/search?q=snakefruits%20seeds" title=" snakefruits seeds"> snakefruits seeds</a>, <a href="https://publications.waset.org/abstracts/search?q=biofilm" title=" biofilm"> biofilm</a>, <a href="https://publications.waset.org/abstracts/search?q=packing%20material" title=" packing material"> packing material</a>, <a href="https://publications.waset.org/abstracts/search?q=biogas" title=" biogas"> biogas</a> </p> <a href="https://publications.waset.org/abstracts/27439/hydrogen-sulfide-removal-from-biogas-using-biofilm-on-packed-bed-of-salak-fruit-seeds" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/27439.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">408</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">12</span> A Literature Review: The Anti-Obesity Effect of Epigallocathecin-3-Gallate of Camellia sinensis (Green Tea) Extraction as a Potential Adjuvant Therapy for Management Obesity</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nunuy%20Nuraeni">Nunuy Nuraeni</a>, <a href="https://publications.waset.org/abstracts/search?q=Vera%20Amalia%20Lestari"> Vera Amalia Lestari</a>, <a href="https://publications.waset.org/abstracts/search?q=Atri%20Laranova"> Atri Laranova</a>, <a href="https://publications.waset.org/abstracts/search?q=Viena%20Nissa%20Mien%20Fadhillah"> Viena Nissa Mien Fadhillah</a>, <a href="https://publications.waset.org/abstracts/search?q=Mutia"> Mutia</a>, <a href="https://publications.waset.org/abstracts/search?q=Muhammad%20Ikhlas%20Abdian%20Putra"> Muhammad Ikhlas Abdian Putra</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction: Obesity is a common disease with high prevalence especially in developing countries including Indonesia. The obesitygenic lifestyle such as excessive intake of food, sedentary lifestyle is the major environmental etiologies of obesity. Obesity is also as one of burden disease with high morbidity due to its complication, such as diabetes mellitus and hypertension. The objective of this literature review is to know how the Epigallocathecin-3-Gallate of Green tea or Camellia sinensis effect as anti-obesity agent and reduce the complication of obesity. Material and Methods: This study based on the secondary data analysis complemented by primary data collection from several journal and textbook. We identified the effect of Epigallocathecin-3-Gallate of Green tea or Camellia sinensis as adjuvant therapy for management obesity and to prevent the complications of obesity. Results: Based on the result, Green tea or Camellia sinensis contain Epigallocathecin-3-Gallate (EGCG) that has anti-obesity effect such as induce apoptosis, inhibit adipogenesis, increasing lipolytic activity, increasing fat oxidation and thermogenesis. Discussion: EGCG are naturally distributed in green tea, that contains a biological activity that has a potential effect to treat obesity. Conclusion: EGCG are capable to treat obesity. By consuming EGCG can prevent obesity in normal health person and prevent complication in patient with obesity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=adjuvant%20therapy" title="adjuvant therapy">adjuvant therapy</a>, <a href="https://publications.waset.org/abstracts/search?q=anti-obesity%20effect" title=" anti-obesity effect"> anti-obesity effect</a>, <a href="https://publications.waset.org/abstracts/search?q=complication" title=" complication"> complication</a>, <a href="https://publications.waset.org/abstracts/search?q=epigallocathecin-3-gallate" title=" epigallocathecin-3-gallate"> epigallocathecin-3-gallate</a>, <a href="https://publications.waset.org/abstracts/search?q=obesity" title=" obesity"> obesity</a> </p> <a href="https://publications.waset.org/abstracts/43524/a-literature-review-the-anti-obesity-effect-of-epigallocathecin-3-gallate-of-camellia-sinensis-green-tea-extraction-as-a-potential-adjuvant-therapy-for-management-obesity" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/43524.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">279</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">11</span> Identification of Clay Mineral for Determining Reservoir Maturity Levels Based on Petrographic Analysis, X-Ray Diffraction and Porosity Test on Penosogan Formation Karangsambung Sub-District Kebumen Regency Central Java</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ayu%20Dwi%20Hardiyanti">Ayu Dwi Hardiyanti</a>, <a href="https://publications.waset.org/abstracts/search?q=Bernardus%20Anggit%20Winahyu"> Bernardus Anggit Winahyu</a>, <a href="https://publications.waset.org/abstracts/search?q=I.%20Gusti%20Agung%20Ayu%20Sugita%20Sari"> I. Gusti Agung Ayu Sugita Sari</a>, <a href="https://publications.waset.org/abstracts/search?q=Lestari%20Sutra%20Simamora"> Lestari Sutra Simamora</a>, <a href="https://publications.waset.org/abstracts/search?q=I.%20Wayan%20Warmada"> I. Wayan Warmada</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The Penosogan Formation sandstone, that has Middle Miosen age, has been deemed as a reservoir potential based on sample data from sandstone outcrop in Kebakalan and Kedawung villages, Karangsambung sub-district, Kebumen Regency, Central Java. This research employs the following analytical methods; petrography, X-ray diffraction (XRD), and porosity test. Based on the presence of micritic sandstone, muddy micrite, and muddy sandstone, the Penosogan Formation sandstone has a fine-coarse granular size and middle-to-fine sorting. The composition of the sandstone is mostly made up of plagioclase, skeletal grain, and traces of micrite. The percentage of clay minerals based on petrographic analysis is 10% and appears to envelop grain, resulting enveloping grain which reduces the porosity of rocks. The porosity types as follows: interparticle, vuggy, channel, and shelter, with an equant form of cement. Moreover, the diagenesis process involves compaction, cementation, authigenic mineral growth, and dissolving due to feldspar alteration. The maturity of the reservoir can be seen through the X-ray diffraction analysis results, using ethylene glycol solution for clay minerals fraction transformed from smectite–illite. Porosity test analysis showed that the Penosogan Formation sandstones has a porosity value of 22% based on the Koeseomadinata classification, 1980. That shows high maturity is very influential for the quality of reservoirs sandstone of the Penosogan Formation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=sandstone%20reservoir" title="sandstone reservoir">sandstone reservoir</a>, <a href="https://publications.waset.org/abstracts/search?q=Penosogan%20Formation" title=" Penosogan Formation"> Penosogan Formation</a>, <a href="https://publications.waset.org/abstracts/search?q=smectite" title=" smectite"> smectite</a>, <a href="https://publications.waset.org/abstracts/search?q=XRD" title=" XRD"> XRD</a> </p> <a href="https://publications.waset.org/abstracts/105891/identification-of-clay-mineral-for-determining-reservoir-maturity-levels-based-on-petrographic-analysis-x-ray-diffraction-and-porosity-test-on-penosogan-formation-karangsambung-sub-district-kebumen-regency-central-java" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/105891.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">174</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">10</span> Nano-MFC (Nano Microbial Fuel Cell): Utilization of Carbon Nano Tube to Increase Efficiency of Microbial Fuel Cell Power as an Effective, Efficient and Environmentally Friendly Alternative Energy Sources </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Annisa%20Ulfah%20Pristya">Annisa Ulfah Pristya</a>, <a href="https://publications.waset.org/abstracts/search?q=Andi%20Setiawan"> Andi Setiawan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Electricity is the primary requirement today's world, including Indonesia. This is because electricity is a source of electrical energy that is flexible to use. Fossil energy sources are the major energy source that is used as a source of energy power plants. Unfortunately, this conversion process impacts on the depletion of fossil fuel reserves and causes an increase in the amount of CO2 in the atmosphere, disrupting health, ozone depletion, and the greenhouse effect. Solutions have been applied are solar cells, ocean wave power, the wind, water, and so forth. However, low efficiency and complicated treatment led to most people and industry in Indonesia still using fossil fuels. Referring to this Fuel Cell was developed. Fuel Cells are electrochemical technology that continuously converts chemical energy into electrical energy for the fuel and oxidizer are the efficiency is considerably higher than the previous natural source of electrical energy, which is 40-60%. However, Fuel Cells still have some weaknesses in terms of the use of an expensive platinum catalyst which is limited and not environmentally friendly. Because of it, required the simultaneous source of electrical energy and environmentally friendly. On the other hand, Indonesia is a rich country in marine sediments and organic content that is never exhausted. Stacking the organic component can be an alternative energy source continued development of fuel cell is A Microbial Fuel Cell. Microbial Fuel Cells (MFC) is a tool that uses bacteria to generate electricity from organic and non-organic compounds. MFC same tools as usual fuel cell composed of an anode, cathode and electrolyte. Its main advantage is the catalyst in the microbial fuel cell is a microorganism and working conditions carried out in neutral solution, low temperatures, and environmentally friendly than previous fuel cells (Chemistry Fuel Cell). However, when compared to Chemistry Fuel Cell, MFC only have an efficiency of 40%. Therefore, the authors provide a solution in the form of Nano-MFC (Nano Microbial Fuel Cell): Utilization of Carbon Nano Tube to Increase Efficiency of Microbial Fuel Cell Power as an Effective, Efficient and Environmentally Friendly Alternative Energy Source. Nano-MFC has the advantage of an effective, high efficiency, cheap and environmental friendly. Related stakeholders that helped are government ministers, especially Energy Minister, the Institute for Research, as well as the industry as a production executive facilitator. strategic steps undertaken to achieve that begin from conduct preliminary research, then lab scale testing, and dissemination and build cooperation with related parties (MOU), conduct last research and its applications in the field, then do the licensing and production of Nano-MFC on an industrial scale and publications to the public. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CNT" title="CNT">CNT</a>, <a href="https://publications.waset.org/abstracts/search?q=efficiency" title=" efficiency"> efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=electric" title=" electric"> electric</a>, <a href="https://publications.waset.org/abstracts/search?q=microorganisms" title=" microorganisms"> microorganisms</a>, <a href="https://publications.waset.org/abstracts/search?q=sediment" title=" sediment"> sediment</a> </p> <a href="https://publications.waset.org/abstracts/26712/nano-mfc-nano-microbial-fuel-cell-utilization-of-carbon-nano-tube-to-increase-efficiency-of-microbial-fuel-cell-power-as-an-effective-efficient-and-environmentally-friendly-alternative-energy-sources" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/26712.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">408</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">9</span> Eco-Nanofiltration Membranes: Nanofiltration Membrane Technology Utilization-Based Fiber Pineapple Leaves Waste as Solutions for Industrial Rubber Liquid Waste Processing and Fertilizer Crisis in Indonesia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Andi%20Setiawan">Andi Setiawan</a>, <a href="https://publications.waset.org/abstracts/search?q=Annisa%20Ulfah%20Pristya"> Annisa Ulfah Pristya</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Indonesian rubber plant area reached 2.9 million hectares with productivity reached 1.38 million. High rubber productivity is directly proportional to the amount of waste produced rubber processing industry. Rubber industry would produce a negative impact on the rubber industry in the form of environmental pollution caused by waste that has not been treated optimally. Rubber industrial wastewater containing high-nitrogen compounds (nitrate and ammonia) and phosphate compounds which cause water pollution and odor problems due to the high ammonia content. On the other hand, demand for NPK fertilizers in Indonesia continues to increase from year to year and in need of ammonia and phosphate as raw material. Based on domestic demand, it takes a year to 400,000 tons of ammonia and Indonesia imports 200,000 tons of ammonia per year valued at IDR 4.2 trillion. As well, the lack of phosphoric acid to be imported from Jordan, Morocco, South Africa, the Philippines, and India as many as 225 thousand tons per year. During this time, the process of wastewater treatment is generally done with a rubber on the tank to contain the waste and then precipitated, filtered and the rest released into the environment. However, this method is inefficient and thus require high energy costs because through many stages before producing clean water that can be discharged into the river. On the other hand, Indonesia has the potential of pineapple fruit can be harvested throughout the year in all of Indonesia. In 2010, production reached 1,406,445 tons of pineapple in Indonesia or about 9.36 percent of the total fruit production in Indonesia. Increased productivity is directly proportional to the amount of pineapple waste pineapple leaves are kept continuous and usually just dumped in the ground or disposed of with other waste at the final disposal. Through Eco-Nanofiltration Membrane-Based Fiber Pineapple leaves Waste so that environmental problems can be solved efficiently. Nanofiltration is a process that uses pressure as a driving force that can be either convection or diffusion of each molecule. Nanofiltration membranes that can split water to nano size so as to separate the waste processed residual economic value that N and P were higher as a raw material for the manufacture of NPK fertilizer to overcome the crisis in Indonesia. The raw materials were used to manufacture Eco-Nanofiltration Membrane is cellulose from pineapple fiber which processed into cellulose acetate which is biodegradable and only requires a change of the membrane every 6 months. Expected output target is Green eco-technology so with nanofiltration membranes not only treat waste rubber industry in an effective, efficient and environmentally friendly but also lowers the cost of waste treatment compared to conventional methods. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biodegradable" title="biodegradable">biodegradable</a>, <a href="https://publications.waset.org/abstracts/search?q=cellulose%20diacetate" title=" cellulose diacetate"> cellulose diacetate</a>, <a href="https://publications.waset.org/abstracts/search?q=fertilizers" title=" fertilizers"> fertilizers</a>, <a href="https://publications.waset.org/abstracts/search?q=pineapple" title=" pineapple"> pineapple</a>, <a href="https://publications.waset.org/abstracts/search?q=rubber" title=" rubber"> rubber</a> </p> <a href="https://publications.waset.org/abstracts/26716/eco-nanofiltration-membranes-nanofiltration-membrane-technology-utilization-based-fiber-pineapple-leaves-waste-as-solutions-for-industrial-rubber-liquid-waste-processing-and-fertilizer-crisis-in-indonesia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/26716.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">447</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8</span> Differences of Vitamin D Serum Status by Ethnicity between Bataknese in the Highland and Malayan in the Lowland on Schizophrenic Patient in North Sumatera</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Endah%20Tri%20Lestari">Endah Tri Lestari</a>, <a href="https://publications.waset.org/abstracts/search?q=Mustafa%20Mahmud%20Amin"> Mustafa Mahmud Amin</a>, <a href="https://publications.waset.org/abstracts/search?q=Elmeida%20Effendy"> Elmeida Effendy</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Vitamin D levels with schizophrenia is lower than the control due to lifestyle and physical health factors such as smoking, increases of body mass index, inactivity, and social withdrawal including decreases of sunlight exposure. Asia has the lowest average of vitamin D serum levels and Europe with lighter colored skin has higher serum levels of vitamin D. Indonesia is a tropical region in the area of the equator, and has only two seasons: the rainy season and summer. The Indonesian people are known as a nation that has a diversity of ethnic groups that exist in many areas. Each tribe has differences in living habits. Ethnic diversity, culture, religion, customs, geographical location, this is reflected in our daily lives that will affect the levels of vitamin D in patients with schizophrenic. Individuals with darker skin tend to be deficient in vitamin D and increases the chance of schizophrenia than the general population. Aims: To determine the difference of vitamin D serum by ethnicity between Bataknese and Malayan schizophrenic patient. Methods: This study was an analytical study to recruited 60 subjects of schizophrenic male patient (30 Bataknese and 30 Malayan), aged between 15 to 55 years old, period at May - November 2016, the acute phase with no agitation. Statistical analysis was using T- independent test. Blood sample for vitamin D serum was using ELFA method. Results: The vitamin D serum levels were lower in Bataknese ethnic group schizophrenic patients in highland than Malayan ethnic group in lowland, reaching statistically (22.9±3.33 ng/ml) vs (27.9±4.19 ng/ml) p < 0,001. Conclusion: There are significant differences of vitamin D serum Status by Ethnicity between Bataknese in the Highland and Malayan in the Lowland on Schizophrenic Patient in North Sumatera. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=schizophrenia" title="schizophrenia">schizophrenia</a>, <a href="https://publications.waset.org/abstracts/search?q=serum%20vitamin%20D" title=" serum vitamin D"> serum vitamin D</a>, <a href="https://publications.waset.org/abstracts/search?q=ethnicity" title=" ethnicity"> ethnicity</a> </p> <a href="https://publications.waset.org/abstracts/58187/differences-of-vitamin-d-serum-status-by-ethnicity-between-bataknese-in-the-highland-and-malayan-in-the-lowland-on-schizophrenic-patient-in-north-sumatera" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/58187.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">307</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">7</span> Optimization of Horticultural Crops by Using the Peats from Rawa Pening Lake as Soil Conditioner</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Addharu%20Eri">Addharu Eri</a>, <a href="https://publications.waset.org/abstracts/search?q=Ningsih%20P.%20Lestari"> Ningsih P. Lestari</a>, <a href="https://publications.waset.org/abstracts/search?q=Setyorini%20Adheliya"> Setyorini Adheliya</a>, <a href="https://publications.waset.org/abstracts/search?q=Syaiputri%20Khaidifah"> Syaiputri Khaidifah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Rawa Pening is a lake at the Ambarawa Basin in Central Java, Indonesia. It serves as a source of power (hydroelectricity), irrigation, and flood control. The potential of this lake is getting worse by the presence of aquatic plants (Eichhornia crassipes) that grows wild, and it can make the lake covered by the cumulation of rotten E. crassipes. This cumulation causes the sediment formation which has high organic material composition. Sediment formation will be lead into a shallowing of the lake and affect water’s quality. The deposition of organic material produces methane gas and hydrogen sulfide, which in rain would turn the water muddy and decompose. Decomposition occuring in the water due to microbe activity in lake's water. The shallowing of Rawa Pening Lake not only will physically can reduce water discharge, but it also has ecologically major impact on water organism. The condition of Rawa Pening Lake peats can not be considered as unimportant issue. One of the solutions that can be applied is by using the peats as a compound materials on growing horticultural crops because the organic materials content on the mineral soil is low, particularly on an old soils. The horticultural crops required organic materials for growth promoting. The horticultural crops that use in this research is mustard cabbage (Brassica sp.). Using Rawa Pening's peats as the medium of plants with high organic materials that also can ameliorate soil’s physical properties, and indirectly serves as soil conditioner. Research will be focus on the peat’s contents and mustard cabbage product’s content. The contents that will be examined is the N-available, Ca, Mg, K, P, and C-organic. The analysis of Ca, Mg, and K is use soil base saturation measurement method and extracting soil is use NH4OAC solution. The aim of this study is to use the peats of Rawa Pening Lake as soil conditioner and increase the productivity of Brassica sp. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Brassica%20sp." title="Brassica sp.">Brassica sp.</a>, <a href="https://publications.waset.org/abstracts/search?q=peats" title=" peats"> peats</a>, <a href="https://publications.waset.org/abstracts/search?q=rawa%20pening%20lake" title=" rawa pening lake"> rawa pening lake</a>, <a href="https://publications.waset.org/abstracts/search?q=soil%20conditioner" title=" soil conditioner"> soil conditioner</a> </p> <a href="https://publications.waset.org/abstracts/42723/optimization-of-horticultural-crops-by-using-the-peats-from-rawa-pening-lake-as-soil-conditioner" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/42723.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">252</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6</span> The Role of Zakat on Sustainable Economic Development by Rumah Zakat</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Selamat%20Muliadi">Selamat Muliadi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study aimed to explain conceptual the role of Zakat on sustainable economic development by Rumah Zakat. Rumah Zakat is a philanthropic institution that manages zakat and other social funds through community empowerment programs. In running the program, including economic empowerment and socio health services are designed for these recipients. Rumah Zakat's connection with the establisment of Sustainable Development Goals (SDGs) which is to help impoverished recipients economically and socially. It’s an important agenda that the government input into national development, even the region. The primary goal of Zakat on sustainable economic development, not only limited to economic variables but based on Islamic principles, has comprehensive characteristics. The characteristics include moral, material, spiritual, and social aspects. In other words, sustainable economic development is closely related to improving people’s living standard (Mustahiq). The findings provide empiricial evidence regarding the positive contribution and effectiveness of zakat targeting in reducing poverty and improve the welfare of people related with the management of zakat. The purpose of this study was to identify the role of Zakat on sustainable economic development, which was applied by Rumah Zakat. This study used descriptive method and qualitative analysis. The data source was secondary data collected from documents and texts related to the research topic, be it books, articles, newspapers, journals, or others. The results showed that the role of zakat on sustainable economic development by Rumah Zakat has been quite good and in accordance with the principle of Islamic economics. Rumah Zakat programs are adapted to support intended development. The contribution of the productive program implementation has been aligned with four goals in the Sustainable Development Goals, i.e., Senyum Juara (Quality Education), Senyum Lestari (Clean Water and Sanitation), Senyum Mandiri (Entrepreneur Program) and Senyum Sehat (Free Maternity Clinic). The performance of zakat in the sustainable economic empowerment community at Rumah Zakat is taking into account dimensions such as input, process, output, and outcome. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zakat" title="Zakat">Zakat</a>, <a href="https://publications.waset.org/abstracts/search?q=social%20welfare" title=" social welfare"> social welfare</a>, <a href="https://publications.waset.org/abstracts/search?q=sustainable%20economic%20development" title=" sustainable economic development"> sustainable economic development</a>, <a href="https://publications.waset.org/abstracts/search?q=charity" title=" charity"> charity</a> </p> <a href="https://publications.waset.org/abstracts/116012/the-role-of-zakat-on-sustainable-economic-development-by-rumah-zakat" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/116012.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">136</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">5</span> Increasing Sulfur Handling Cost Efficiency Using the Eco Sulfur Paving Block Method at PT Pertamina EP Field Cepu</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Adha%20Bayu%20Wijaya">Adha Bayu Wijaya</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Zainal%20Abidin"> A. Zainal Abidin</a>, <a href="https://publications.waset.org/abstracts/search?q=Naufal%20Baihaqi"> Naufal Baihaqi</a>, <a href="https://publications.waset.org/abstracts/search?q=Joko%20Suprayitno"> Joko Suprayitno</a>, <a href="https://publications.waset.org/abstracts/search?q=Astika%20Titistiti"> Astika Titistiti</a>, <a href="https://publications.waset.org/abstracts/search?q=Muslim%20Adi%20Wijaya"> Muslim Adi Wijaya</a>, <a href="https://publications.waset.org/abstracts/search?q=Endah%20Tri%20Lestari"> Endah Tri Lestari</a>, <a href="https://publications.waset.org/abstracts/search?q=Agung%20Wibowo"> Agung Wibowo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Sulfur is a non-metallic chemical element in the form of a yellow crystalline solid with the chemical formula, and is formed from several types of natural and artificial chemical reactions. Commercial applications of sulfur processed products can be found in various aspects of life, for example in the use of processed sulfur as paving blocks. The Gundih Central Processing Plant (CPP) is capable of producing 14 tons/day of sulfur pellets. This amount comes from the high H2S content of the wells with a total concentration of 20,000 ppm and a volume accumulation of 14 MMSCFD acid gas. H2S is converted to sulfur using the thiobacillus microbe in the Biological Sulfur Recovery Unit (BSRU) with a sulfur product purity level greater than 95%. In 2018 sulfur production at Gundih CPP was recorded at 4044 tons which could potentially trigger serious problems from an environmental aspect. The use of sulfur as material for making paving blocks is an alternative solution in addressing the potential impact on the environment, as regulated by Government Regulation No.22 of Year 2021 concerning the Waste Management of Non-Hazardous and Toxic Substances (B3), and the high cost of handling sulfur by third parties. The design mix of ratio sulfur paving blocks is 22% cements, rock ash 67%, and 11% of sulfur pellets. The sulfur used in making the paving mixture is pure sulfur, namely the side product category without any contaminants, thereby eliminating the potential for environmental pollution when implementing sulfur paving. Strength tests of sulfur paving materials have also been confirmed by external laboratories. The standard used in making sulfur paving blocks refers to the SNI 03-0691-1996 standard. With the results of sulfur paving blocks made according to quality B. Currently, sulfur paving blocks are used in building access to wells locations and in public roads in the Cepu Field area as a contribution from Corporate Social Responsibility (CSR). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=sulphur" title="sulphur">sulphur</a>, <a href="https://publications.waset.org/abstracts/search?q=innovation" title=" innovation"> innovation</a>, <a href="https://publications.waset.org/abstracts/search?q=paving%20block" title=" paving block"> paving block</a>, <a href="https://publications.waset.org/abstracts/search?q=CSR" title=" CSR"> CSR</a>, <a href="https://publications.waset.org/abstracts/search?q=sulphur%20paving" title=" sulphur paving"> sulphur paving</a> </p> <a href="https://publications.waset.org/abstracts/175532/increasing-sulfur-handling-cost-efficiency-using-the-eco-sulfur-paving-block-method-at-pt-pertamina-ep-field-cepu" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/175532.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">75</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4</span> Application of Geotube® Method for Sludge Handling in Adaro Coal Mine</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ezman%20Fitriansyah">Ezman Fitriansyah</a>, <a href="https://publications.waset.org/abstracts/search?q=Lestari%20Diah%20Restu"> Lestari Diah Restu</a>, <a href="https://publications.waset.org/abstracts/search?q=Wawan"> Wawan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Adaro coal mine in South Kalimantan-Indonesia maintains catchment area of approximately 15,000 Ha for its mine operation. As an open pit surface coal mine with high erosion rate, the mine water in Adaro coal mine contains high TSS that needs to be treated before being released to rivers. For the treatment process, Adaro operates 21 Settling Ponds equipped with combination of physical and chemical system to separate solids and water to ensure the discharged water complied with regional environmental quality standards. However, the sludge created from the sedimentation process reduces the settling ponds capacity gradually. Therefore regular maintenance activities are required to recover and maintain the ponds' capacity. Trucking system and direct dredging had been the most common method to handle sludge in Adaro. But the main problem in applying these two methods is excessive area required for drying pond construction. To solve this problem, Adaro implements an alternative method called Geotube®. The principle of Geotube® method is the sludge contained in the Settling Ponds is pumped into Geotube® containers which have been designed to release water and retain mud flocks. During the pumping process, an amount of flocculants chemicals are injected into the sludge to form bigger mud flocks. Due to the difference in particle size, the mud flocks are settled in the container whilst the water continues to flow out through the container’s pores. Compared to the trucking system and direct dredging method, this method provides three advantages: space required to operate, increasing of overburden waste dump volume, and increasing of water treatment process speed and quality. Based on the evaluation result, Geotube® method only needs 1:8 of space required by the other methods. From the geotechnical assessment result conducted by Adaro, the potential loss of waste dump volume capacity prior to implementation of the Geotube® method was 26.7%. The water treatment process of TSS in well maintained ponds is 16% more optimum. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=geotube" title="geotube">geotube</a>, <a href="https://publications.waset.org/abstracts/search?q=mine%20water" title=" mine water"> mine water</a>, <a href="https://publications.waset.org/abstracts/search?q=settling%20pond" title=" settling pond"> settling pond</a>, <a href="https://publications.waset.org/abstracts/search?q=sludge%20handling" title=" sludge handling"> sludge handling</a>, <a href="https://publications.waset.org/abstracts/search?q=wastewater%20treatment" title=" wastewater treatment"> wastewater treatment</a> </p> <a href="https://publications.waset.org/abstracts/88114/application-of-geotube-method-for-sludge-handling-in-adaro-coal-mine" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/88114.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">200</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3</span> Utilization Of Medical Plants Tetrastigma glabratum (Blume) Planch from Mount Prau in the Blumah, Central Java </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20Lianah">A. Lianah</a>, <a href="https://publications.waset.org/abstracts/search?q=B.%20Peter%20Sopade"> B. Peter Sopade</a>, <a href="https://publications.waset.org/abstracts/search?q=C.%20Krisantini"> C. Krisantini </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Walikadep/Tetrastigma glabratum (Blume) Planch is a traditional herb that has been used by people of Blumah village; it is believed to have a stimulant effect and ailments for many illnesses. Our survey demonstrated that the people of Blumah village has exploited walikadep from Protected Forest of Mount Prau. More than 10% of 448 households at Blumah village have used walikadep as traditional herb or jamu. Part of the walikadep plants used is the liquid extract of the stem. The population of walikadep is getting scarce and it is rarely found now. The objectives of this study are to examine the stimulant effect of walikadep, to measure growth and exploitation rate of walikadep, and to find ways to effectively propagate the plants, as well as identifying the impact on the environment through field experiments and explorative survey. Stimulant effect was tested using open-field and hole-board test. Data were collected through field observation and experiment, and data were analysed using lab test and Anova. Rate of exploitation and plant growth was measured using Regression analysis; comparison of plant growth in-situ and ex-situ used descriptive analysis. The environmental impact was measured by population structure vegetation analysis method by Shannon Weinner. The study revealed that the walikadep exudates did not have a stimulant effect. Exploitation of walikadep and the long time required to reach harvestable size resulted in the scarcity of the plant in the natural habitat. Plant growth was faster in-situ than ex-situ; and fast growth was obtained from middle part cuttings treated with vermicompost. Biodiversity index after exploitation was higher than before exploitation, possibly due to the toxic and allellopathic effect (phenolics) of the plant. Based on these findings, further research is needed to examine the toxic effects of the leave and stem extract of walikadep and their allelopathic effects. We recommend that people of Blumah village to stop using walikadep as the stimulant. The local people, village government in the regional and central levels, and perhutani should do an integrated efforts to conserve walikadep through Pengamanan Terpadu Konservasi Walikadep Lestari (PTKWL) program, so this population of this plant in the natural habitat can be maintained. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=utilization" title="utilization">utilization</a>, <a href="https://publications.waset.org/abstracts/search?q=medical%20plants" title=" medical plants"> medical plants</a>, <a href="https://publications.waset.org/abstracts/search?q=traditional" title=" traditional"> traditional</a>, <a href="https://publications.waset.org/abstracts/search?q=Tetastigma%20glabratum" title=" Tetastigma glabratum "> Tetastigma glabratum </a> </p> <a href="https://publications.waset.org/abstracts/46492/utilization-of-medical-plants-tetrastigma-glabratum-blume-planch-from-mount-prau-in-the-blumah-central-java" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/46492.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">280</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Mas%20Ulfah%20Lestari&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Mas%20Ulfah%20Lestari&page=2" rel="next">&rsaquo;</a></li> </ul> </div> </main> <footer> <div id="infolinks" class="pt-3 pb-2"> <div class="container"> <div style="background-color:#f5f5f5;" class="p-3"> <div class="row"> <div class="col-md-2"> <ul class="list-unstyled"> About <li><a 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