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temperature</title> <meta name="description" content="Search results for: atmospheric temperature"> <meta name="keywords" content="atmospheric temperature"> <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 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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="atmospheric temperature"> <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> 7439</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: atmospheric temperature</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">7439</span> A Statistical Analysis on Relationship between Temperature Variations with Latitude and Altitude regarding Total Amount of Atmospheric Carbon Dioxide in Iran</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Masoumeh%20Moghbel">Masoumeh Moghbel</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nowadays, carbon dioxide which is produced by human activities is considered as the main effective factor in the global warming occurrence. Regarding to the role of CO2 and its ability in trapping the heat, the main objective of this research is study the effect of atmospheric CO2 (which is recorded in Manaloa) on variations of temperature parameters (daily mean temperature, minimum temperature and maximum temperature) in 5 meteorological stations in Iran which were selected according to the latitude and altitude in 40 years statistical period. Firstly, the trend of temperature parameters was studied by Regression and none-graphical Man-Kendal methods. Then, relation between temperature variations and CO2 were studied by Correlation technique. Also, the impact of CO2 amount on temperature in different atmospheric levels (850 and 500 hpa) was analyzed. The results illustrated that correlation coefficient between temperature variations and CO2 in low latitudes and high altitudes is more significant rather than other regions. it is important to note that altitude as the one of the main geographic factor has limitation in affecting the temperature variations, so that correlation coefficient between these two parameters in 850 hpa (r=0.86) is more significant than 500 hpa (r = 0.62). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=altitude" title="altitude">altitude</a>, <a href="https://publications.waset.org/abstracts/search?q=atmospheric%20carbon%20dioxide" title=" atmospheric carbon dioxide"> atmospheric carbon dioxide</a>, <a href="https://publications.waset.org/abstracts/search?q=latitude" title=" latitude"> latitude</a>, <a href="https://publications.waset.org/abstracts/search?q=temperature%20variations" title=" temperature variations"> temperature variations</a> </p> <a href="https://publications.waset.org/abstracts/34560/a-statistical-analysis-on-relationship-between-temperature-variations-with-latitude-and-altitude-regarding-total-amount-of-atmospheric-carbon-dioxide-in-iran" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/34560.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">7438</span> Determination of Iodine and Heavy Metals in Two Brands of Iodised Salt</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Z.%20O.%20Apotiola">Z. O. Apotiola</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20F.%20Fashakin"> J. F. Fashakin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A study was conducted to investigate the storage stability of Mr Chef and Annapurna salts. The salts were bought from Mile 12 market in Lagos State and were stored for a period of six months. The stability of the iodine content was then investigated by storing some at ambient temperature (24-30oC) and some at atmospheric temperature (21-35 oC), and from each storage condition, a sample each was taken every month to analyze for the iodine and moisture contents. The result shows that there was a significant difference between Mr Chef and the standard and Annapurna and the standard. The iodine content of Mr Chef stored at ambient and atmospheric temperature decreases progressively from 48.70±0.00-37.00±0.00 and 47.60±0.00-11.60±0.00 respectively. And that of Annapurna at both ambient and atmospheric temperature also decreases progressively from 47.60±0.00-36.60±0.00 and 47.60±0.00-10.60±0.00 respectively. Also, the moisture content of both salts at the zero month to the sixth month both at room temperature and atmospheric temperature increases from 1.11±0.00-1.70±0.00 and 1.11±0.00-2.40±0.00 respectively. The results of the heavy metals shows that only Copper, Zinc and Cobalt were detected at the first and the sixth month in both Mr Chef and Annapurna which ranges from 0.15±0.00-0.38±0.00 and 0.18±0.00 - 3.50±0.00 respectively. Hence, the stability of iodine in salt is influenced by the storage conditions it is subjected to and the length of time it is been stored. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=salt" title="salt">salt</a>, <a href="https://publications.waset.org/abstracts/search?q=iodine" title=" iodine"> iodine</a>, <a href="https://publications.waset.org/abstracts/search?q=stability" title=" stability"> stability</a>, <a href="https://publications.waset.org/abstracts/search?q=ambient" title=" ambient"> ambient</a>, <a href="https://publications.waset.org/abstracts/search?q=atmospheric%20temperature" title=" atmospheric temperature"> atmospheric temperature</a> </p> <a href="https://publications.waset.org/abstracts/20724/determination-of-iodine-and-heavy-metals-in-two-brands-of-iodised-salt" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20724.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">578</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">7437</span> Interaction of Elevated Carbon Dioxide and Temperature on Strawberry (Fragaria × ananassa) Growth and Fruit Yield</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Himali%20N.%20Balasooriya">Himali N. Balasooriya</a>, <a href="https://publications.waset.org/abstracts/search?q=Kithsiri%20B.%20Dassanayake"> Kithsiri B. Dassanayake</a>, <a href="https://publications.waset.org/abstracts/search?q=Saman%20Seneweera"> Saman Seneweera</a>, <a href="https://publications.waset.org/abstracts/search?q=Said%20Ajlouni"> Said Ajlouni</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Increase in atmospheric CO<sub>2</sub> concentration [CO<sub>2</sub>] and ambient temperature associated with changing climatic conditions will have significant impacts on agriculture crop productivity and quality. Independent effects of the above two environmental variables on the growth, yield and quality of strawberry were well documented. Higher temperatures over the optimum range (20-25ºC) lead to crop failures, while elevated [CO<sub>2</sub>] stimulated plant growth and yield but compromised the physical quality of fruits. However, there is very limited understanding of the interaction between these variables on the plant growth, yield and quality. Therefore, this study was designed to investigate the interactive effect of high temperature and elevated [CO<sub>2</sub>] on growth, yield and quality of strawberries. Strawberry cultivars ‘Albion’ and ‘San Andreas’ were grown under six different combinations of two temperatures (25 and 30ºC) and three [CO<sub>2</sub>] (400, 650 and 950 µmol mol<sup>-1</sup>) in controlled-environmental growth chambers. Plant growth measurements such as plant height, canopy area, number of flowers, and fruit yield were measured during phonological development. Photosynthesis and transpiration, the ratio of intercellular to atmospheric [CO<sub>2</sub>] (Ci/Ca) were measured to estimate the physiological adjustment to climate stress. The impact of temperature and [CO<sub>2</sub>] interaction on growth and yield of strawberry was significant (p < 0.05). Across both cultivars, highest fruit yields were observed at 650 µmol mol<sup>-1</sup> [CO<sub>2</sub>], which was particularly clear at 25°C. The fruit yield gradually decreased at 30°C under all the treatment combinations. However, photosynthesis rates were highest at 650 µmol mol<sup>-1 </sup>[CO<sub>2</sub>] but no increment was found at 900 µmol mol<sup>-1</sup> [CO<sub>2</sub>]. Interestingly, Ci/Ca ratio increased with increasing atmospheric [CO<sub>2</sub>] which was predominant at high temperature. Similarly, fruit yield was substantially reduced at high [CO<sub>2</sub>] under high temperature. Our findings suggest that increased Ci/Ca ratio at high temperature is likely reduces the photosynthesis and thus yield response to elevated [CO<sub>2</sub>]. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=atmospheric%20CO%E2%82%82%20concentration" title="atmospheric CO₂ concentration">atmospheric CO₂ concentration</a>, <a href="https://publications.waset.org/abstracts/search?q=fruit%20yield" title=" fruit yield"> fruit yield</a>, <a href="https://publications.waset.org/abstracts/search?q=strawberry" title=" strawberry"> strawberry</a>, <a href="https://publications.waset.org/abstracts/search?q=temperature" title=" temperature"> temperature</a> </p> <a href="https://publications.waset.org/abstracts/91768/interaction-of-elevated-carbon-dioxide-and-temperature-on-strawberry-fragaria-ananassa-growth-and-fruit-yield" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/91768.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">239</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">7436</span> Urban Boundary Layer and Its Effects on Haze Episode in Thailand</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20Bualert">S. Bualert</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20Duangmal"> K. Duangmal</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Atmospheric boundary layer shows effects of land cover on atmospheric characteristic in term of temperature gradient and wind profile. They are key factors to control atmospheric process such as atmospheric dilution and mixing via thermal and mechanical turbulent. Bangkok, ChiangMai, and Hatyai are major cities of central, southern and northern of Thailand, respectively. The different of them are location, geography and size of the city, Bangkok is the most urbanized city and classified as mega city compared to ChiangMai and HatYai, respectively. They have been suffering from air pollution episode such as transboundary haze. The worst period of the northern part of Thailand was occurred at the end of February through April of each year. The particulate matter less than 10 micrometer (PM10) concentrations were higher than Thai’s ambient air quality standard (120 micrograms per cubic meter) more than two times. Radiosonde technique and air pollutant (CO, PM10, TSP, O3, NOx) measurements were used to identify characteristics of urban boundary layer and air pollutions problems in the cities. Furthermore, air pollutant profiles showed good relationship to characteristic’s urban boundary layer especially on daytime temperature inversion on 29 February 2009 caused two times higher than normal concentrations of CO and particulate matter. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=haze%20episode" title="haze episode">haze episode</a>, <a href="https://publications.waset.org/abstracts/search?q=micrometeorology" title=" micrometeorology"> micrometeorology</a>, <a href="https://publications.waset.org/abstracts/search?q=temperature%20inversion" title=" temperature inversion"> temperature inversion</a>, <a href="https://publications.waset.org/abstracts/search?q=urban%20boundary%20layer" title=" urban boundary layer"> urban boundary layer</a> </p> <a href="https://publications.waset.org/abstracts/43172/urban-boundary-layer-and-its-effects-on-haze-episode-in-thailand" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/43172.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">258</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">7435</span> GIS Based Atmospheric Analysis to Predict Future Temperature Rise Caused by Land Use and Land Cover in Okara by Using Environmental Remote Sensing</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sumaira%20Hafeez">Sumaira Hafeez</a>, <a href="https://publications.waset.org/abstracts/search?q=Saira%20Akram"> Saira Akram</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Albeit the populace in metropolitan regions on the planet develops each year, the urban communities battling to adapt to the expanded metropolitan movement grow at different rates. Land Surface Temperature and other atmospheric parameters of the area of not really settled using Landsat pictures more than 10 years isolated. The LULC types were moreover arranged using managed gathering techniques. Quick urbanization is changing the current examples of Land Use Land Cover (LULC) all around the world, which is thusly expanding the Land Surface Temperature (LST) other atmospheric parameters in numerous districts. Present review was centered around assessing the current and recreating the future LULC and Land Surface Temperature patterns in the elevated climate of lower Himalayan district of Pakistan. Past examples of LULC and Land Surface Temperature were distinguished through the multi-unearthly Landsat satellite pictures during the 1995–2019 information period. The future forecasts were made for the year 2030 to work out LULC and LST changes separately, utilizing their previous examples. The review presumes that the reliably extending encroachment of the city's as of late advanced provincial regions over the totally open have went with an overall warming of the district's typical. Meteorological parameters over the earlier ten years and that permitting the land to lie void for a significant long time resulting to clearing the country fields for future metropolitan improvement is a preparation that has lamentable natural effects. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=surface%20urban%20heat%20island" title="surface urban heat island">surface urban heat island</a>, <a href="https://publications.waset.org/abstracts/search?q=land%20surface%20temperature" title=" land surface temperature"> land surface temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=urban%20climate%20change" title=" urban climate change"> urban climate change</a>, <a href="https://publications.waset.org/abstracts/search?q=spatial%20analysis%20of%20meterological%20and%20atmospheric%20science" title=" spatial analysis of meterological and atmospheric science"> spatial analysis of meterological and atmospheric science</a> </p> <a href="https://publications.waset.org/abstracts/150975/gis-based-atmospheric-analysis-to-predict-future-temperature-rise-caused-by-land-use-and-land-cover-in-okara-by-using-environmental-remote-sensing" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/150975.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">135</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">7434</span> Direct Synthesis of Composite Materials Type MCM-41/ZSM-5 by Hydrothermal at Atmospheric Pressure in Sealed Pyrex Tubes</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zoubida%20Lounis">Zoubida Lounis</a>, <a href="https://publications.waset.org/abstracts/search?q=Naouel%20Boumesla"> Naouel Boumesla</a>, <a href="https://publications.waset.org/abstracts/search?q=Abd%20El%20Kader%20Bengueddach"> Abd El Kader Bengueddach</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The main objective of this study is to synthesize a composite materials by direct synthesis at atmospheric pression having the MFI structure and MCM-41 by using double structuring. In the first part of this work we are interested in the study of the synthesis parameters, in addition to temperature, the crystallization time and pH. The second part of this work is to vary the ratio of the concentrations of both structuring C9 [C9H19(CH3)3NBr] and C16 [C16H33(CH3)3NBr] and determining the area of formation of the two materials (microporous and mesoporous at same time), for this reason we performed a battery of experiments ranging from 0 to 100% for both structural. To enhance the economic purposes of this study, the experiments were carried out by using very cheap and simple process, the pyrex tubes were used instead of the reactors, and the synthesis were done at atmospheric pressure and moderate temperature. The final products (composite materials) were obtained at high and pure quality. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=composite%20materials" title="composite materials">composite materials</a>, <a href="https://publications.waset.org/abstracts/search?q=syntheisis" title=" syntheisis"> syntheisis</a>, <a href="https://publications.waset.org/abstracts/search?q=catalysts" title=" catalysts"> catalysts</a>, <a href="https://publications.waset.org/abstracts/search?q=mesoporous%20materials" title=" mesoporous materials"> mesoporous materials</a>, <a href="https://publications.waset.org/abstracts/search?q=microporous%20materials" title=" microporous materials"> microporous materials</a> </p> <a href="https://publications.waset.org/abstracts/14563/direct-synthesis-of-composite-materials-type-mcm-41zsm-5-by-hydrothermal-at-atmospheric-pressure-in-sealed-pyrex-tubes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/14563.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">388</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">7433</span> Modeling of Diurnal Pattern of Air Temperature in a Tropical Environment: Ile-Ife and Ibadan, Nigeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rufus%20Temidayo%20Akinnubi">Rufus Temidayo Akinnubi</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20O.%20Adeniyi"> M. O. Adeniyi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Existing diurnal air temperature models simulate night time air temperature over Nigeria with high biases. An improved parameterization is presented for modeling the diurnal pattern of air temperature (Ta) which is applicable in the calculation of turbulent heat fluxes in Global climate models, based on Nigeria Micrometeorological Experimental site (NIMEX) surface layer observations. Five diurnal Ta models for estimating hourly Ta from daily maximum, daily minimum, and daily mean air temperature were validated using root-mean-square error (RMSE), Mean Error Bias (MBE) and scatter graphs. The original Fourier series model showed better performance for unstable air temperature parameterizations while the stable Ta was strongly overestimated with a large error. The model was improved with the inclusion of the atmospheric cooling rate that accounts for the temperature inversion that occurs during the nocturnal boundary layer condition. The MBE and RMSE estimated by the modified Fourier series model reduced by 4.45 oC and 3.12 oC during the transitional period from dry to wet stable atmospheric conditions. The modified Fourier series model gave good estimation of the diurnal weather patterns of Ta when compared with other existing models for a tropical environment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=air%20temperature" title="air temperature">air temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=mean%20bias%20error" title=" mean bias error"> mean bias error</a>, <a href="https://publications.waset.org/abstracts/search?q=Fourier%20series%20analysis" title=" Fourier series analysis"> Fourier series analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=surface%20energy%20balance" title=" surface energy balance"> surface energy balance</a>, <a href="https://publications.waset.org/abstracts/search?q=" title=" "> </a> </p> <a href="https://publications.waset.org/abstracts/75489/modeling-of-diurnal-pattern-of-air-temperature-in-a-tropical-environment-ile-ife-and-ibadan-nigeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/75489.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">230</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">7432</span> The Moveable Cathode Water Cold Atmospheric Pressure Plasma Jet for Titanium Surface Treatment of Dental Implant</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nazanin%20Gerami">Nazanin Gerami</a>, <a href="https://publications.waset.org/abstracts/search?q=Shirin%20Adlparvar"> Shirin Adlparvar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the present time in the laboratory, one can create an ionized gas, that is to say, plasma from room temperature up to ten times more than the temperature of the sun center (150,000,000). All these temperature spectrums of plasma have applications in different disciplines, including dentistry, medicine, science, surface treatment, nuclear waste disinfection, nuclear fusion technology, etc. However, for the sick of simplicity, all these plasma temperature spectrums are classified as cold or low-pressure non-thermal plasma and warm or high-pressure equilibrium plasma. The cold plasma, as we are interested in this paper, exists at lower ion and neutral temperatures with respect to electron temperature, but in the equilibrium plasma, the temperatures of ion and electron are fairly equal. The cold plasma is a partially ionized gas comprising ions, electrons, ultraviolet photons and reactive neutrals such as radicals, excited and ground-state molecules. Cold atmospheric pressure plasmas are widely used in diverse fields of dental medicine, such as the titanium surface of dental implants, which helps in reducing contact angle and supporting the spread of osteoblastic cells and is known to aid in osteoblastic proliferation and osseointegration, thus increasing the success rates of implants. This article focuses on the anticipated uses of a newly designed water-cooled adjustable cathode cold atmospheric pressure plasma Jet (CAPPJ) for titanium surface treatment in dental implant placement. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CAPPJ" title="CAPPJ">CAPPJ</a>, <a href="https://publications.waset.org/abstracts/search?q=surface%20modification" title=" surface modification"> surface modification</a>, <a href="https://publications.waset.org/abstracts/search?q=osseointegration" title=" osseointegration"> osseointegration</a>, <a href="https://publications.waset.org/abstracts/search?q=plasma%20medicine" title=" plasma medicine"> plasma medicine</a>, <a href="https://publications.waset.org/abstracts/search?q=dentistry" title=" dentistry"> dentistry</a> </p> <a href="https://publications.waset.org/abstracts/155966/the-moveable-cathode-water-cold-atmospheric-pressure-plasma-jet-for-titanium-surface-treatment-of-dental-implant" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/155966.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">150</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">7431</span> Atmospheric CO2 Capture via Temperature/Vacuum Swing Adsorption in SIFSIX-3-Ni</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Eleni%20Tsalaporta">Eleni Tsalaporta</a>, <a href="https://publications.waset.org/abstracts/search?q=Sebastien%20Vaesen"> Sebastien Vaesen</a>, <a href="https://publications.waset.org/abstracts/search?q=James%20M.%20D.%20MacElroy"> James M. D. MacElroy</a>, <a href="https://publications.waset.org/abstracts/search?q=Wolfgang%20Schmitt"> Wolfgang Schmitt</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Carbon dioxide capture has attracted the attention of many governments, industries and scientists over the last few decades, due to the rapid increase in atmospheric CO2 composition, with several studies being conducted in this area over the last few years. In many of these studies, CO2 capture in complex Pressure Swing Adsorption (PSA) cycles has been associated with high energy consumption despite the promising capture performance of such processes. The purpose of this study is the economic capture of atmospheric carbon dioxide for its transformation into a clean type of energy. A single column Temperature /Vacuum Swing Adsorption (TSA/VSA) process is proposed as an alternative option to multi column Pressure Swing Adsorption (PSA) processes. The proposed adsorbent is SIFSIX-3-Ni, a newly developed MOF (Metal Organic Framework), with extended CO2 selectivity and capacity. There are three stages involved in this paper: (i) SIFSIX-3-Ni is synthesized and pelletized and its physical and chemical properties are examined before and after the pelletization process, (ii) experiments are designed and undertaken for the estimation of the diffusion and adsorption parameters and limitations for CO2 undergoing capture from the air; and (iii) the CO2 adsorption capacity and dynamical characteristics of SIFSIX-3-Ni are investigated both experimentally and mathematically by employing a single column TSA/VSA, for the capture of atmospheric CO2. This work is further supported by a technical-economical study for the estimation of the investment cost and the energy consumption of the single column TSA/VSA process. The simulations are performed using gProms. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=carbon%20dioxide%20capture" title="carbon dioxide capture">carbon dioxide capture</a>, <a href="https://publications.waset.org/abstracts/search?q=temperature%2Fvacuum%20swing%20adsorption" title=" temperature/vacuum swing adsorption"> temperature/vacuum swing adsorption</a>, <a href="https://publications.waset.org/abstracts/search?q=metal%20organic%20frameworks" title=" metal organic frameworks"> metal organic frameworks</a>, <a href="https://publications.waset.org/abstracts/search?q=SIFSIX-3-Ni" title=" SIFSIX-3-Ni"> SIFSIX-3-Ni</a> </p> <a href="https://publications.waset.org/abstracts/57076/atmospheric-co2-capture-via-temperaturevacuum-swing-adsorption-in-sifsix-3-ni" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/57076.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">263</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">7430</span> Inorganic Microporous Membranes Fabricated by Atmospheric Pressure Plasma Liquid Deposition</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Damian%20A.%20Mooney">Damian A. Mooney</a>, <a href="https://publications.waset.org/abstracts/search?q=Michael%20T.%20P.%20Mc%20Cann"> Michael T. P. Mc Cann</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20M.%20Don%20MacElroy"> J. M. Don MacElroy</a>, <a href="https://publications.waset.org/abstracts/search?q=Olli%20Antson"> Olli Antson</a>, <a href="https://publications.waset.org/abstracts/search?q=Denis%20P.%20Dowling"> Denis P. Dowling</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Atmospheric pressure plasma liquid deposition (APPLD) is a novel technology used for the deposition of thin films via the injection of a reactive liquid precursor into a high-energy discharge plasma at ambient pressure. In this work, APPLD, utilising a TEOS precursor, was employed to produce asymmetric membranes consisting of a thin (100 nm) layer of deposited silica on a microporous silica support in order to assess their suitability for high temperature gas separation applications. He and N₂ gas permeability measurements were made for each of the fabricated membranes and a maximum ideal He/N₂ selectivity of 66 was observed at room temperature. He, N₂ and CO2 gas permeances were also measured at the elevated temperature of 673K and ideal He/N₂ and CO₂/N₂ selectivities of 300 and 7.4, respectively, were observed. The results suggest that this plasma-based deposition technique can be a viable method for the manufacture of membranes for the efficient separation of high temperature, post-combustion gases, including that of CO₂/N₂ where the constituent gases differ in size by fractions of an Ångstrom. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=asymmetric%20membrane" title="asymmetric membrane">asymmetric membrane</a>, <a href="https://publications.waset.org/abstracts/search?q=CO%E2%82%82%20separation" title=" CO₂ separation"> CO₂ separation</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20temperature" title=" high temperature"> high temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=plasma%20deposition" title=" plasma deposition"> plasma deposition</a>, <a href="https://publications.waset.org/abstracts/search?q=thin%20films" title=" thin films"> thin films</a> </p> <a href="https://publications.waset.org/abstracts/48713/inorganic-microporous-membranes-fabricated-by-atmospheric-pressure-plasma-liquid-deposition" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/48713.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">305</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">7429</span> Neuronal Networks for the Study of the Effects of Cosmic Rays on Climate Variations</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jossitt%20Williams%20Vargas%20Cruz">Jossitt Williams Vargas Cruz</a>, <a href="https://publications.waset.org/abstracts/search?q=Aura%20Jazm%C3%ADn%20P%C3%A9rez%20R%C3%ADos"> Aura Jazmín Pérez Ríos</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The variations of solar dynamics have become a relevant topic of study due to the effects of climate changes generated on the earth. One of the most disconcerting aspects is the variability that the sun has on the climate is the role played by sunspots (extra-atmospheric variable) in the modulation of the Cosmic Rays CR (extra-atmospheric variable). CRs influence the earth's climate by affecting cloud formation (atmospheric variable), and solar cycle influence is associated with the presence of solar storms, and the magnetic activity is greater, resulting in less CR entering the earth's atmosphere. The different methods of climate prediction in Colombia do not take into account the extra-atmospheric variables. Therefore, correlations between atmospheric and extra-atmospheric variables were studied in order to implement a Python code based on neural networks to make the prediction of the extra-atmospheric variable with the highest correlation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=correlations" title="correlations">correlations</a>, <a href="https://publications.waset.org/abstracts/search?q=cosmic%20rays" title=" cosmic rays"> cosmic rays</a>, <a href="https://publications.waset.org/abstracts/search?q=sun" title=" sun"> sun</a>, <a href="https://publications.waset.org/abstracts/search?q=sunspots%20and%20variations." title=" sunspots and variations."> sunspots and variations.</a> </p> <a href="https://publications.waset.org/abstracts/163231/neuronal-networks-for-the-study-of-the-effects-of-cosmic-rays-on-climate-variations" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/163231.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">74</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">7428</span> Determination of Direct Solar Radiation Using Atmospheric Physics Models</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pattra%20Pukdeekiat">Pattra Pukdeekiat</a>, <a href="https://publications.waset.org/abstracts/search?q=Siriluk%20Ruangrungrote"> Siriluk Ruangrungrote</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work was originated to precisely determine direct solar radiation by using atmospheric physics models since the accurate prediction of solar radiation is necessary and useful for solar energy applications including atmospheric research. The possible models and techniques for a calculation of regional direct solar radiation were challenging and compulsory for the case of unavailable instrumental measurement. The investigation was mathematically governed by six astronomical parameters i.e. declination (δ), hour angle (ω), solar time, solar zenith angle (θz), extraterrestrial radiation (Iso) and eccentricity (E0) along with two atmospheric parameters i.e. air mass (mr) and dew point temperature at Bangna meteorological station (13.67° N, 100.61° E) in Bangkok, Thailand. Analyses of five models of solar radiation determination with the assumption of clear sky were applied accompanied by three statistical tests: Mean Bias Difference (MBD), Root Mean Square Difference (RMSD) and Coefficient of determination (R2) in order to validate the accuracy of obtainable results. The calculated direct solar radiation was in a range of 491-505 Watt/m2 with relative percentage error 8.41% for winter and 532-540 Watt/m2 with relative percentage error 4.89% for summer 2014. Additionally, dataset of seven continuous days, representing both seasons were considered with the MBD, RMSD and R2 of -0.08, 0.25, 0.86 and -0.14, 0.35, 3.29, respectively, which belong to Kumar model for winter and CSR model for summer. In summary, the determination of direct solar radiation based on atmospheric models and empirical equations could advantageously provide immediate and reliable values of the solar components for any site in the region without a constraint of actual measurement. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=atmospheric%20physics%20models" title="atmospheric physics models">atmospheric physics models</a>, <a href="https://publications.waset.org/abstracts/search?q=astronomical%20parameters" title=" astronomical parameters"> astronomical parameters</a>, <a href="https://publications.waset.org/abstracts/search?q=atmospheric%20parameters" title=" atmospheric parameters"> atmospheric parameters</a>, <a href="https://publications.waset.org/abstracts/search?q=clear%20sky%20condition" title=" clear sky condition"> clear sky condition</a> </p> <a href="https://publications.waset.org/abstracts/38352/determination-of-direct-solar-radiation-using-atmospheric-physics-models" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/38352.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">409</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">7427</span> Comparison of Mean Monthly Soil Temperature at (5 and 30 cm) Depths at Compton Experimental Site, West Midlands (UK), between 1976-2008</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aminu%20Mansur">Aminu Mansur</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A comparison of soil temperature at (5 and 30 cm) depths at a research site over the period (1976-2008) was analyzed. Based on the statistical analysis of the database of (12,045) days of individual soil temperature measurements in sandy-loam of the (salwick series) soils, the mean soil temperature revealed a statistically significant increase of about -1.1 to 10.9°C at 5 cm depth in 1976 compared to 2008. Similarly, soil temperature at 30 cm depth increased by -0.1 to 2.1°C in 2008 compared to 1976. Although, rapid increase in soil temperature at all depths was observed during that period, but a thorough assessment of these conditions suggested that the soil temperature at 5 cm depth are progressively increasing over time. A typical example of those increases in soil temperature was provided for agriculture where Miscanthus (elephant) plant that grows within the study area is adversely affected by the mean soil temperature increase. The study concluded that these observations contribute to the growing mass of evidence of global warming and knowledge on secular trends. Therefore, there was statistically significant increase in soil temperature at Compton Experimental Site between 1976-2008. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=soil%20temperature" title="soil temperature">soil temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=warming%20trend" title=" warming trend"> warming trend</a>, <a href="https://publications.waset.org/abstracts/search?q=environment%20science" title=" environment science"> environment science</a>, <a href="https://publications.waset.org/abstracts/search?q=climate%20and%20atmospheric%20sciences" title=" climate and atmospheric sciences"> climate and atmospheric sciences</a> </p> <a href="https://publications.waset.org/abstracts/26304/comparison-of-mean-monthly-soil-temperature-at-5-and-30-cm-depths-at-compton-experimental-site-west-midlands-uk-between-1976-2008" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/26304.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">298</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">7426</span> Atmospheric Plasma Treatment to Improve Water and Oil Repellent Finishing for PET and PET/Spandex Fabrics</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mehtap%20%C3%87al%C4%B1%C5%9Fkan">Mehtap Çalışkan</a>, <a href="https://publications.waset.org/abstracts/search?q=Nil%C3%BCfer%20Y%C4%B1ld%C4%B1z%20Varan"> Nilüfer Yıldız Varan</a>, <a href="https://publications.waset.org/abstracts/search?q=Volkan%20Kaplan"> Volkan Kaplan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, the effects of an atmospheric plasma treatment on the durability of water and oil repellent finishes of PET and PET/Spandex fabrics were tested. Fabrics were treated with a low-frequency atmospheric pressure glow discharge. After plasma treatments, the water and oil repellent finishes were applied using pad-dry-cure method. It was observed that plasma treatments improved the durability finish for all fabrics. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=atmospheric%20plasma" title="atmospheric plasma">atmospheric plasma</a>, <a href="https://publications.waset.org/abstracts/search?q=durable%20coating" title=" durable coating"> durable coating</a>, <a href="https://publications.waset.org/abstracts/search?q=oil%20repellency" title=" oil repellency"> oil repellency</a>, <a href="https://publications.waset.org/abstracts/search?q=PET%2Fspandex%20fabrics" title=" PET/spandex fabrics"> PET/spandex fabrics</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20repellency" title=" water repellency"> water repellency</a> </p> <a href="https://publications.waset.org/abstracts/68560/atmospheric-plasma-treatment-to-improve-water-and-oil-repellent-finishing-for-pet-and-petspandex-fabrics" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/68560.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">412</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">7425</span> Learning Materials of Atmospheric Pressure Plasma Process: Turning Hydrophilic Surface to Hydrophobic</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=C.W.%20Kan">C.W. Kan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper investigates the use of atmospheric pressure plasma for improving the surface hydrophobicity of polyurethane synthetic leather with tetramethylsilane (TMS). The atmospheric pressure plasma treatment with TMS is a single-step process to enhance the hydrophobicity of polyurethane synthetic leather. The hydrophobicity of the treated surface was examined by contact angle measurement. The physical and chemical surface changes were evaluated by scanning electron microscopy (SEM) and infrared spectroscopy (FTIR). The purpose of this paper is to provide learning materials for understanding how to use atmospheric pressure plasma in the textile finishing process to transform a hydrophilic surface to hydrophobic. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Learning%20materials" title="Learning materials">Learning materials</a>, <a href="https://publications.waset.org/abstracts/search?q=atmospheric%20pressure%20plasma%20treatment" title=" atmospheric pressure plasma treatment"> atmospheric pressure plasma treatment</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrophobic" title=" hydrophobic"> hydrophobic</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrophilic" title=" hydrophilic"> hydrophilic</a>, <a href="https://publications.waset.org/abstracts/search?q=surface" title=" surface"> surface</a> </p> <a href="https://publications.waset.org/abstracts/49534/learning-materials-of-atmospheric-pressure-plasma-process-turning-hydrophilic-surface-to-hydrophobic" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/49534.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">353</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">7424</span> An Improved Atmospheric Correction Method with Diurnal Temperature Cycle Model for MSG-SEVIRI TIR Data under Clear Sky Condition</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Caixia%20Gao">Caixia Gao</a>, <a href="https://publications.waset.org/abstracts/search?q=Chuanrong%20Li"> Chuanrong Li</a>, <a href="https://publications.waset.org/abstracts/search?q=Lingli%20Tang"> Lingli Tang</a>, <a href="https://publications.waset.org/abstracts/search?q=Lingling%20Ma"> Lingling Ma</a>, <a href="https://publications.waset.org/abstracts/search?q=Yonggang%20Qian"> Yonggang Qian</a>, <a href="https://publications.waset.org/abstracts/search?q=Ning%20Wang"> Ning Wang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Knowledge of land surface temperature (LST) is of crucial important in energy balance studies and environment modeling. Satellite thermal infrared (TIR) imagery is the primary source for retrieving LST at the regional and global scales. Due to the combination of atmosphere and land surface of received radiance by TIR sensors, atmospheric effect correction has to be performed to remove the atmospheric transmittance and upwelling radiance. Spinning Enhanced Visible and Infrared Imager (SEVIRI) onboard Meteosat Second Generation (MSG) provides measurements every 15 minutes in 12 spectral channels covering from visible to infrared spectrum at fixed view angles with 3km pixel size at nadir, offering new and unique capabilities for LST, LSE measurements. However, due to its high temporal resolution, the atmosphere correction could not be performed with radiosonde profiles or reanalysis data since these profiles are not available at all SEVIRI TIR image acquisition times. To solve this problem, a two-part six-parameter semi-empirical diurnal temperature cycle (DTC) model has been applied to the temporal interpolation of ECMWF reanalysis data. Due to the fact that the DTC model is underdetermined with ECMWF data at four synoptic times (UTC times: 00:00, 06:00, 12:00, 18:00) in one day for each location, some approaches are adopted in this study. It is well known that the atmospheric transmittance and upwelling radiance has a relationship with water vapour content (WVC). With the aid of simulated data, the relationship could be determined under each viewing zenith angle for each SEVIRI TIR channel. Thus, the atmospheric transmittance and upwelling radiance are preliminary removed with the aid of instantaneous WVC, which is retrieved from the brightness temperature in the SEVIRI channels 5, 9 and 10, and a group of the brightness temperatures for surface leaving radiance (Tg) are acquired. Subsequently, a group of the six parameters of the DTC model is fitted with these Tg by a Levenberg-Marquardt least squares algorithm (denoted as DTC model 1). Although the retrieval error of WVC and the approximate relationships between WVC and atmospheric parameters would induce some uncertainties, this would not significantly affect the determination of the three parameters, td, ts and β (β is the angular frequency, td is the time where the Tg reaches its maximum, ts is the starting time of attenuation) in DTC model. Furthermore, due to the large fluctuation in temperature and the inaccuracy of the DTC model around sunrise, SEVIRI measurements from two hours before sunrise to two hours after sunrise are excluded. With the knowledge of td , ts, and β, a new DTC model (denoted as DTC model 2) is accurately fitted again with these Tg at UTC times: 05:57, 11:57, 17:57 and 23:57, which is atmospherically corrected with ECMWF data. And then a new group of the six parameters of the DTC model is generated and subsequently, the Tg at any given times are acquired. Finally, this method is applied to SEVIRI data in channel 9 successfully. The result shows that the proposed method could be performed reasonably without assumption and the Tg derived with the improved method is much more consistent with that from radiosonde measurements. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=atmosphere%20correction" title="atmosphere correction">atmosphere correction</a>, <a href="https://publications.waset.org/abstracts/search?q=diurnal%20temperature%20cycle%20model" title=" diurnal temperature cycle model"> diurnal temperature cycle model</a>, <a href="https://publications.waset.org/abstracts/search?q=land%20surface%20temperature" title=" land surface temperature"> land surface temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=SEVIRI" title=" SEVIRI"> SEVIRI</a> </p> <a href="https://publications.waset.org/abstracts/44948/an-improved-atmospheric-correction-method-with-diurnal-temperature-cycle-model-for-msg-seviri-tir-data-under-clear-sky-condition" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/44948.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">268</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">7423</span> Atmospheric Circulation Drivers Of Nationally-Aggregated Wind Energy Production Over Greece</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kostas%20Philippopoulos">Kostas Philippopoulos</a>, <a href="https://publications.waset.org/abstracts/search?q=Chris%20G.%20Tzanis"> Chris G. Tzanis</a>, <a href="https://publications.waset.org/abstracts/search?q=Despina%20Deligiorgi"> Despina Deligiorgi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Climate change adaptation requires the exploitation of renewable energy sources such as wind. However, climate variability can affect the regional wind energy potential and consequently the available wind power production. The goal of the research project is to examine the impact of atmospheric circulation on wind energy production over Greece. In the context of synoptic climatology, the proposed novel methodology employs Self-Organizing Maps for grouping and classifying the atmospheric circulation and nationally-aggregated capacity factor time series for a 30-year period. The results indicate the critical effect of atmospheric circulation on the national aggregated wind energy production values and therefore address the issue of optimum distribution of wind farms for a specific region. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=wind%20energy" title="wind energy">wind energy</a>, <a href="https://publications.waset.org/abstracts/search?q=atmospheric%20circulation" title=" atmospheric circulation"> atmospheric circulation</a>, <a href="https://publications.waset.org/abstracts/search?q=capacity%20factor" title=" capacity factor"> capacity factor</a>, <a href="https://publications.waset.org/abstracts/search?q=self-organizing%20maps" title=" self-organizing maps"> self-organizing maps</a> </p> <a href="https://publications.waset.org/abstracts/146188/atmospheric-circulation-drivers-of-nationally-aggregated-wind-energy-production-over-greece" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/146188.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">162</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">7422</span> Greenhouse Gasses’ Effect on Atmospheric Temperature Increase and the Observable Effects on Ecosystems</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Alexander%20J.%20Severinsky">Alexander J. Severinsky</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Radiative forces of greenhouse gases (GHG) increase the temperature of the Earth's surface, more on land, and less in oceans, due to their thermal capacities. Given this inertia, the temperature increase is delayed over time. Air temperature, however, is not delayed as air thermal capacity is much lower. In this study, through analysis and synthesis of multidisciplinary science and data, an estimate of atmospheric temperature increase is made. Then, this estimate is used to shed light on current observations of ice and snow loss, desertification and forest fires, and increased extreme air disturbances. The reason for this inquiry is due to the author’s skepticism that current changes cannot be explained by a "~1 <sup>o</sup>C" global average surface temperature rise within the last 50-60 years. The only other plausible cause to explore for understanding is that of atmospheric temperature rise. The study utilizes an analysis of air temperature rise from three different scientific disciplines: thermodynamics, climate science experiments, and climactic historical studies. The results coming from these diverse disciplines are nearly the same, within ± 1.6%. The direct radiative force of GHGs with a high level of scientific understanding is near 4.7 W/m<sup>2</sup> on average over the Earth’s entire surface in 2018, as compared to one in pre-Industrial time in the mid-1700s. The additional radiative force of fast feedbacks coming from various forms of water gives approximately an additional ~15 W/m<sup>2</sup>. In 2018, these radiative forces heated the atmosphere by approximately 5.1 <sup>o</sup>C, which will create a thermal equilibrium average ground surface temperature increase of 4.6 <sup>o</sup>C to 4.8 <sup>o</sup>C by the end of this century. After 2018, the temperature will continue to rise without any additional increases in the concentration of the GHGs, primarily of carbon dioxide and methane. These findings of the radiative force of GHGs in 2018 were applied to estimates of effects on major Earth ecosystems. This additional force of nearly 20 W/m<sup>2</sup> causes an increase in ice melting by an additional rate of over 90 cm/year, green leaves temperature increase by nearly 5 <sup>o</sup>C, and a work energy increase of air by approximately 40 Joules/mole. This explains the observed high rates of ice melting at all altitudes and latitudes, the spread of deserts and increases in forest fires, as well as increased energy of tornadoes, typhoons, hurricanes, and extreme weather, much more plausibly than the 1.5 <sup>o</sup>C increase in average global surface temperature in the same time interval. Planned mitigation and adaptation measures might prove to be much more effective when directed toward the reduction of existing GHGs in the atmosphere. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=greenhouse%20radiative%20force" title="greenhouse radiative force">greenhouse radiative force</a>, <a href="https://publications.waset.org/abstracts/search?q=greenhouse%20air%20temperature" title=" greenhouse air temperature"> greenhouse air temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=greenhouse%20thermodynamics" title=" greenhouse thermodynamics"> greenhouse thermodynamics</a>, <a href="https://publications.waset.org/abstracts/search?q=greenhouse%20historical" title=" greenhouse historical"> greenhouse historical</a>, <a href="https://publications.waset.org/abstracts/search?q=greenhouse%20radiative%20force%20on%20ice" title=" greenhouse radiative force on ice"> greenhouse radiative force on ice</a>, <a href="https://publications.waset.org/abstracts/search?q=greenhouse%20radiative%20force%20on%20plants" title=" greenhouse radiative force on plants"> greenhouse radiative force on plants</a>, <a href="https://publications.waset.org/abstracts/search?q=greenhouse%20radiative%20force%20in%20air" title=" greenhouse radiative force in air"> greenhouse radiative force in air</a> </p> <a href="https://publications.waset.org/abstracts/128167/greenhouse-gasses-effect-on-atmospheric-temperature-increase-and-the-observable-effects-on-ecosystems" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/128167.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">104</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">7421</span> Effect of UV Radiation to Change the Properties of the Composite PA+GF</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lenka%20Markovi%C4%8Dov%C3%A1">Lenka Markovičová</a>, <a href="https://publications.waset.org/abstracts/search?q=Viera%20Zatkal%C3%ADkov%C3%A1"> Viera Zatkalíková</a>, <a href="https://publications.waset.org/abstracts/search?q=Tomasz%20Garbacz"> Tomasz Garbacz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The development of composite materials and the related design and manufacturing technologies is one of the most important advances in the history of materials. Composites are multifunctional materials having unprecedented mechanical and physical properties that can be tailored to meet the requirements of a particular application. Some composites also exhibit great resistance to high-temperature corrosion, oxidation, and wear. Polymers are widely used indoors and outdoors, therefore they are exposed to a chemical environment which may include atmospheric oxygen, acidic fumes, acidic rain, moisture heat and thermal shock, ultra-violet light, high energy radiation, etc. Different polymers are affected differently by these factors even though the amorphous polymers are more sensitive. Ageing is also important and it is defined as the process of deterioration of engineering materials resulting from the combined effects of atmospheric radiation, heat, oxygen, water, micro-organisms and other atmospheric factors. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=composites%20with%20glass%20fibers" title="composites with glass fibers">composites with glass fibers</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20properties" title=" mechanical properties"> mechanical properties</a>, <a href="https://publications.waset.org/abstracts/search?q=polyamides" title=" polyamides"> polyamides</a>, <a href="https://publications.waset.org/abstracts/search?q=UV%20degradation" title=" UV degradation"> UV degradation</a> </p> <a href="https://publications.waset.org/abstracts/31313/effect-of-uv-radiation-to-change-the-properties-of-the-composite-pagf" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/31313.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">288</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">7420</span> The Projections of Urban Climate Change Using Conformal Cubic Atmospheric Model in Bali, Indonesia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Laras%20Tursilowati">Laras Tursilowati</a>, <a href="https://publications.waset.org/abstracts/search?q=Bambang%20Siswanto"> Bambang Siswanto</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Urban climate change has short- and long-term implications for decision-makers in urban development. The problem for this important metropolitan regional of population and economic value is that there is very little usable information on climate change. Research about urban climate change has been carried out in Bali Indonesia by using Conformal Cubic Atmospheric Model (CCAM) that runs with Representative Concentration Pathway (RCP)4.5. The history data means average data from 1975 to 2005, climate projections with RCP4.5 scenario means average data from 2006 to 2099, and anomaly (urban climate change) is RCP4.5 minus history. The results are the history of temperature between 22.5-27.5 OC, and RCP4.5 between 25.5-29.5 OC. The temperature anomalies can be seen in most of northern Bali that increased by about 1.6 to 2.9 OC. There is a reduced humidity tendency (drier) in most parts of Bali, especially the northern part of Bali, while a small portion in the south increase moisture (wetter). The comfort index of Bali region in history is still relatively comfortable (20-26 OC), but on the condition RCP4.5 there is no comfortable area with index more than 26 OC (hot and dry). This research is expected to be useful to help the government make good urban planning. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CCAM" title="CCAM">CCAM</a>, <a href="https://publications.waset.org/abstracts/search?q=comfort%20index" title=" comfort index"> comfort index</a>, <a href="https://publications.waset.org/abstracts/search?q=IPCC%20AR5" title=" IPCC AR5"> IPCC AR5</a>, <a href="https://publications.waset.org/abstracts/search?q=temperature" title=" temperature"> temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=urban%20climate%20change" title=" urban climate change"> urban climate change</a> </p> <a href="https://publications.waset.org/abstracts/131576/the-projections-of-urban-climate-change-using-conformal-cubic-atmospheric-model-in-bali-indonesia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/131576.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">144</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">7419</span> Apparent Ageing Mechanism of Polyurethane Coating in Typical Atmospheric Environment</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jin%20Gao">Jin Gao</a>, <a href="https://publications.waset.org/abstracts/search?q=Jin%20Zhang"> Jin Zhang</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiaogang%20Li"> Xiaogang Li</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Outdoor exposure experiments were conducted in three extreme environments, namely the Chinese plateau mountain environment (Lhasa), the cold–temperate environment (Mohe), and the marine atmospheric environment (Wanning), to track a new long-life environment-friendly polyurethane coating. The relationship between apparent properties, namely gloss and microstructural changes, was analyzed, and the influence of typical climatic environment on the aging mechanism of polyurethane coatings was discussed. Results show that the UV radiation in the Lhasa area causes photoaging degradation, micropores are formed on the coating surface, and the powdering phenomenon is obvious. Photodegradation occurs in the Wanning area, and a hydrolysis reaction is observed. The hydrolysis reaction catalyzes the photoaging, the coating surface becomes yellow, and the powdering becomes serious. Photoaging is also present in the Mohe area, but it is mainly due to temperature changes that in turn change the internal stress of the coating. Microcracks and bumps form on the coating surface. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aging" title="aging">aging</a>, <a href="https://publications.waset.org/abstracts/search?q=atmospheric%20environment" title=" atmospheric environment"> atmospheric environment</a>, <a href="https://publications.waset.org/abstracts/search?q=outdoor%20exposure" title=" outdoor exposure"> outdoor exposure</a>, <a href="https://publications.waset.org/abstracts/search?q=polyurethane%20coating" title=" polyurethane coating"> polyurethane coating</a> </p> <a href="https://publications.waset.org/abstracts/117712/apparent-ageing-mechanism-of-polyurethane-coating-in-typical-atmospheric-environment" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/117712.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">126</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">7418</span> Contribution of Hydrogen Peroxide in the Selective Aspect of Prostate Cancer Treatment by Cold Atmospheric Plasma</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Maxime%20Moreau">Maxime Moreau</a>, <a href="https://publications.waset.org/abstracts/search?q=Silv%C3%A8re%20Baron"> Silvère Baron</a>, <a href="https://publications.waset.org/abstracts/search?q=Jean-Marc%20Lobaccaro"> Jean-Marc Lobaccaro</a>, <a href="https://publications.waset.org/abstracts/search?q=Karine%20Charlet"> Karine Charlet</a>, <a href="https://publications.waset.org/abstracts/search?q=S%C3%A9bastien%20Menecier"> Sébastien Menecier</a>, <a href="https://publications.waset.org/abstracts/search?q=Fr%C3%A9d%C3%A9ric%20Perisse"> Frédéric Perisse</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Cold Atmospheric Plasma (CAP) is an ionized gas generated at atmospheric pressure with the temperature of heavy particles (molecules, ions, atoms) close to the room temperature. Recent studies have shown that both in-vitro and in-vivo plasma exposition to many cancer cell lines are efficient to induce the apoptotic way of cell death. In some other works, normal cell lines seem to be less impacted by plasma than cancer cell lines. This is called selectivity of plasma. It is highly likely that the generated RNOS (Reactive Nitrogen Oxygen Species) in the plasma jet, but also in the medium, play a key-role in this selectivity. In this study, two CAP devices will be compared to electrical power, chemical species composition and their efficiency to kill cancer cells. A particular focus on the action of hydrogen peroxide will be made. The experiments will take place as described next for both devices: electrical and spectroscopic characterization for different voltages, plasma treatment of normal and cancer cells to compare the CAP efficiency between cell lines and to show that death is induced by an oxidative stress. To enlighten the importance of hydrogen peroxide, an inhibitor of H2O2 will be added in cell culture medium before treatment and a comparison will be made between the results of cell viability in this case and those from a simple plasma exposition. Besides, H2O2 production will be measured by only treating medium with plasma. Cell lines will also be exposed to different concentrations of hydrogen peroxide in order to characterize the cytotoxic threshold for cells and to make a comparison with the quantity of H2O2 produced by CAP devices. Finally, the activity of catalase for different cell lines will be quantified. This enzyme is an important antioxidant agent against hydrogen peroxide. A correlation between cells response to plasma exposition and this activity could be a strong argument in favor of the predominant role of H2O2 to explain the selectivity of plasma cancer treatment by cold atmospheric plasma. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cold%20atmospheric%20plasma" title="cold atmospheric plasma">cold atmospheric plasma</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrogen%20peroxide" title=" hydrogen peroxide"> hydrogen peroxide</a>, <a href="https://publications.waset.org/abstracts/search?q=prostate%20cancer" title=" prostate cancer"> prostate cancer</a>, <a href="https://publications.waset.org/abstracts/search?q=selectivity" title=" selectivity"> selectivity</a> </p> <a href="https://publications.waset.org/abstracts/153096/contribution-of-hydrogen-peroxide-in-the-selective-aspect-of-prostate-cancer-treatment-by-cold-atmospheric-plasma" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/153096.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">148</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">7417</span> Temperature Calculation for an Atmospheric Pressure Plasma Jet by Optical Emission Spectroscopy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=H.%20Lee">H. Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Jr."> Jr.</a>, <a href="https://publications.waset.org/abstracts/search?q=L.%20Bo-ot"> L. Bo-ot</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Tumlos"> R. Tumlos</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Ramos"> H. Ramos</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The objective of the study is to be able to calculate excitation and vibrational temperatures of a 2.45 GHz microwave-induced atmospheric pressure plasma jet. The plasma jet utilizes Argon gas as a primary working gas, while Nitrogen is utilized as a shroud gas for protecting the quartz tube from the plasma discharge. Through Optical Emission Spectroscopy (OES), various emission spectra were acquired from the plasma discharge. Selected lines from Ar I and N2 I emissions were used for the Boltzmann plot technique. The Boltzmann plots yielded values for the excitation and vibrational temperatures. The various values for the temperatures were plotted against varying parameters such as the gas flow rates. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=plasma%20jet" title="plasma jet">plasma jet</a>, <a href="https://publications.waset.org/abstracts/search?q=OES" title=" OES"> OES</a>, <a href="https://publications.waset.org/abstracts/search?q=Boltzmann%20plots" title=" Boltzmann plots"> Boltzmann plots</a>, <a href="https://publications.waset.org/abstracts/search?q=vibrational%20temperatures" title=" vibrational temperatures"> vibrational temperatures</a> </p> <a href="https://publications.waset.org/abstracts/12879/temperature-calculation-for-an-atmospheric-pressure-plasma-jet-by-optical-emission-spectroscopy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/12879.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">713</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">7416</span> Comparison of Different Reanalysis Products for Predicting Extreme Precipitation in the Southern Coast of the Caspian Sea</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Parvin%20Ghafarian">Parvin Ghafarian</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammadreza%20Mohammadpur%20Panchah"> Mohammadreza Mohammadpur Panchah</a>, <a href="https://publications.waset.org/abstracts/search?q=Mehri%20Fallahi"> Mehri Fallahi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Synoptic patterns from surface up to tropopause are very important for forecasting the weather and atmospheric conditions. There are many tools to prepare and analyze these maps. Reanalysis data and the outputs of numerical weather prediction models, satellite images, meteorological radar, and weather station data are used in world forecasting centers to predict the weather. The forecasting extreme precipitating on the southern coast of the Caspian Sea (CS) is the main issue due to complex topography. Also, there are different types of climate in these areas. In this research, we used two reanalysis data such as ECMWF Reanalysis 5th Generation Description (ERA5) and National Centers for Environmental Prediction /National Center for Atmospheric Research (NCEP/NCAR) for verification of the numerical model. ERA5 is the latest version of ECMWF. The temporal resolution of ERA5 is hourly, and the NCEP/NCAR is every six hours. Some atmospheric parameters such as mean sea level pressure, geopotential height, relative humidity, wind speed and direction, sea surface temperature, etc. were selected and analyzed. Some different type of precipitation (rain and snow) was selected. The results showed that the NCEP/NCAR has more ability to demonstrate the intensity of the atmospheric system. The ERA5 is suitable for extract the value of parameters for specific point. Also, ERA5 is appropriate to analyze the snowfall events over CS (snow cover and snow depth). Sea surface temperature has the main role to generate instability over CS, especially when the cold air pass from the CS. Sea surface temperature of NCEP/NCAR product has low resolution near coast. However, both data were able to detect meteorological synoptic patterns that led to heavy rainfall over CS. However, due to the time lag, they are not suitable for forecast centers. The application of these two data is for research and verification of meteorological models. Finally, ERA5 has a better resolution, respect to NCEP/NCAR reanalysis data, but NCEP/NCAR data is available from 1948 and appropriate for long term research. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=synoptic%20patterns" title="synoptic patterns">synoptic patterns</a>, <a href="https://publications.waset.org/abstracts/search?q=heavy%20precipitation" title=" heavy precipitation"> heavy precipitation</a>, <a href="https://publications.waset.org/abstracts/search?q=reanalysis%20data" title=" reanalysis data"> reanalysis data</a>, <a href="https://publications.waset.org/abstracts/search?q=snow" title=" snow"> snow</a> </p> <a href="https://publications.waset.org/abstracts/112447/comparison-of-different-reanalysis-products-for-predicting-extreme-precipitation-in-the-southern-coast-of-the-caspian-sea" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/112447.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">123</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">7415</span> Thermodynamic Analysis of Cascade Refrigeration System Using R12-R13, R290-R23 and R404A-23</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20D.%20Parekh">A. D. Parekh</a>, <a href="https://publications.waset.org/abstracts/search?q=P.%20R.%20Tailor"> P. R. Tailor </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The Montreal protocol and Kyoto protocol underlined the need of substitution of CFC’s and HCFC’s due to their adverse impact on atmospheric ozone layer which protects earth from U.V rays. The CFCs have been entirely ruled out since 1995 and a long-term basis HCFCs must be replaced by 2020. All this events motivated HFC refrigerants which are harmless to ozone layer. In this paper thermodynamic analysis of cascade refrigeration system has been done using three different refrigerant pairs R13-R12, R290-R23, and R404A-R23. Effect of various operating parameters i.e evaporator temperature, condenser temperature, temperature difference in cascade condenser and low temperature cycle condenser temperature on performance parameters viz. COP, exergetic efficiency and refrigerant mass flow ratio have been studied. Thermodynamic analysis shows that out of three refrigerant pairs R12-R13, R290-R23 and R404A-R23 the COP of R290-R23 refrigerant pair is highest. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=thermodynamic%20analysis" title="thermodynamic analysis">thermodynamic analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=cascade%20refrigeration%20system" title=" cascade refrigeration system"> cascade refrigeration system</a>, <a href="https://publications.waset.org/abstracts/search?q=COP" title=" COP"> COP</a>, <a href="https://publications.waset.org/abstracts/search?q=exergetic%20efficiency" title=" exergetic efficiency"> exergetic efficiency</a> </p> <a href="https://publications.waset.org/abstracts/12727/thermodynamic-analysis-of-cascade-refrigeration-system-using-r12-r13-r290-r23-and-r404a-23" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/12727.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">7414</span> Observational Study Reveals Inverse Relationship: Rising PM₂.₅ Concentrations Linked to Decreasing Muon Flux</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yashas%20Mattur">Yashas Mattur</a>, <a href="https://publications.waset.org/abstracts/search?q=Jensen%20Coonradt"> Jensen Coonradt</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Muon flux, the rate of muons reaching Earth from the atmosphere, is impacted by various factors such as air pressure, temperature, and humidity. However, the influence of concentrations of PM₂.₅ (particulate matter with diameters 2.5 mm or smaller) on muon detection rates remains unexplored. During the summer of 2023, smoke from Canadian wildfires (containing significant amounts of particulate matter) blew over regions in the Northern US, introducing huge fluctuations in PM₂.₅ concentrations, thus inspiring our experiment to investigate the correlation of PM₂.₅ concentrations and muon rates. To investigate this correlation, muon collision rates were measured and analyzed alongside PM₂.₅ concentration data over the periods of both light and heavy smoke. Other confounding variables, including temperature, humidity, and atmospheric pressure, were also considered. The results reveal a statistically significant inverse correlation between muon flux and PM₂.₅ concentrations, indicating that particulate matter has an impact on the rate of muons reaching the earth’s surface. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Muon%20Flux" title="Muon Flux">Muon Flux</a>, <a href="https://publications.waset.org/abstracts/search?q=atmospheric%20effects%20on%20muons" title=" atmospheric effects on muons"> atmospheric effects on muons</a>, <a href="https://publications.waset.org/abstracts/search?q=PM%E2%82%82.%E2%82%85" title=" PM₂.₅"> PM₂.₅</a>, <a href="https://publications.waset.org/abstracts/search?q=airborne%20particulate%20matter" title=" airborne particulate matter"> airborne particulate matter</a> </p> <a href="https://publications.waset.org/abstracts/174018/observational-study-reveals-inverse-relationship-rising-pm25-concentrations-linked-to-decreasing-muon-flux" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/174018.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">74</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">7413</span> Comprehensive, Up-to-Date Climate System Change Indicators, Trends and Interactions</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Peter%20Carter">Peter Carter</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Comprehensive climate change indicators and trends inform the state of the climate (system) with respect to present and future climate change scenarios and the urgency of mitigation and adaptation. With data records now going back for many decades, indicator trends can complement model projections. They are provided as datasets by several climate monitoring centers, reviewed by state of the climate reports, and documented by the IPCC assessments. Up-to-date indicators are provided here. Rates of change are instructive, as are extremes. The indicators include greenhouse gas (GHG) emissions (natural and synthetic), cumulative CO2 emissions, atmospheric GHG concentrations (including CO2 equivalent), stratospheric ozone, surface ozone, radiative forcing, global average temperature increase, land temperature increase, zonal temperature increases, carbon sinks, soil moisture, sea surface temperature, ocean heat content, ocean acidification, ocean oxygen, glacier mass, Arctic temperature, Arctic sea ice (extent and volume), northern hemisphere snow cover, permafrost indices, Arctic GHG emissions, ice sheet mass, sea level rise, and stratospheric and surface ozone. Global warming is not the most reliable single metric for the climate state. Radiative forcing, atmospheric CO2 equivalent, and ocean heat content are more reliable. Global warming does not provide future commitment, whereas atmospheric CO2 equivalent does. Cumulative carbon is used for estimating carbon budgets. The forcing of aerosols is briefly addressed. Indicator interactions are included. In particular, indicators can provide insight into several crucial global warming amplifying feedback loops, which are explained. All indicators are increasing (adversely), most as fast as ever and some faster. One particularly pressing indicator is rapidly increasing global atmospheric methane. In this respect, methane emissions and sources are covered in more detail. In their application, indicators used in assessing safe planetary boundaries are included. Indicators are considered with respect to recent published papers on possible catastrophic climate change and climate system tipping thresholds. They are climate-change-policy relevant. In particular, relevant policies include the 2015 Paris Agreement on “holding the increase in the global average temperature to well below 2°C above pre-industrial levels and pursuing efforts to limit the temperature increase to 1.5°C above pre-industrial levels” and the 1992 UN Framework Convention on Climate change, which has “stabilization of greenhouse gas concentrations in the atmosphere at a level that would prevent dangerous anthropogenic interference with the climate system.” <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=climate%20change" title="climate change">climate change</a>, <a href="https://publications.waset.org/abstracts/search?q=climate%20change%20indicators" title=" climate change indicators"> climate change indicators</a>, <a href="https://publications.waset.org/abstracts/search?q=climate%20change%20trends" title=" climate change trends"> climate change trends</a>, <a href="https://publications.waset.org/abstracts/search?q=climate%20system%20change%20interactions" title=" climate system change interactions"> climate system change interactions</a> </p> <a href="https://publications.waset.org/abstracts/157637/comprehensive-up-to-date-climate-system-change-indicators-trends-and-interactions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/157637.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">103</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">7412</span> Major Mechanisms of Atmospheric Moisture Transport and Their Role in Precipitation Extreme Events in the Amazonia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Luis%20Gimeno">Luis Gimeno</a>, <a href="https://publications.waset.org/abstracts/search?q=Rosmeri%20da%20Rocha"> Rosmeri da Rocha</a>, <a href="https://publications.waset.org/abstracts/search?q=Raquel%20Nieto"> Raquel Nieto</a>, <a href="https://publications.waset.org/abstracts/search?q=Tercio%20Ambrizzi"> Tercio Ambrizzi</a>, <a href="https://publications.waset.org/abstracts/search?q=Alex%20Ramos"> Alex Ramos</a>, <a href="https://publications.waset.org/abstracts/search?q=Anita%20Drumond"> Anita Drumond</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The transport of moisture from oceanic sources to the continents represents the atmospheric branch of the water cycle, forming the connection between evaporation from the ocean and precipitation over the continents. In this regard two large scale dynamical/meteorological structures appear to play a key role, namely Low Level Jet (LLJ) systems and Atmospheric Rivers (ARs). The former are particularly important in tropical and subtropical regions; the latter is mostly confined to extratropical regions. A key question relates to the anomalies in the transport of moisture observed during natural hazards related to extremes of precipitation (i.e., drought or wet spells). In this study we will be focused on these two major atmospheric moisture transport mechanisms (LLJs and ARs) and its role in precipitation extreme events (droughts and wet spells) in the Amazonia paying particular attention to i) intensification (decreasing) of moisture transport by them and its role in wet spells (droughts), and ii) changes in their positions and occurrence with associated flooding and wet spells. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=droughts" title="droughts">droughts</a>, <a href="https://publications.waset.org/abstracts/search?q=wet%20spells" title=" wet spells"> wet spells</a>, <a href="https://publications.waset.org/abstracts/search?q=amazonia" title=" amazonia"> amazonia</a>, <a href="https://publications.waset.org/abstracts/search?q=LLJs" title=" LLJs"> LLJs</a>, <a href="https://publications.waset.org/abstracts/search?q=atmospheric%20rivers" title=" atmospheric rivers"> atmospheric rivers</a> </p> <a href="https://publications.waset.org/abstracts/38231/major-mechanisms-of-atmospheric-moisture-transport-and-their-role-in-precipitation-extreme-events-in-the-amazonia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/38231.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">302</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">7411</span> Extracting the Atmospheric Carbon Dioxide and Convert It into Useful Minerals at the Room Conditions</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Muthana%20A.%20M.%20Jamel%20Al-Gburi">Muthana A. M. Jamel Al-Gburi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Elimination of carbon dioxide (CO2) gas from our atmosphere is very important but complicated, and since there is always an increase in the gas amounts of the other greenhouse ones in our atmosphere, causes by both some of the human activities and the burning of the fossil fuels, which leads to the Global Warming phenomena i.e., increasing the earth temperature to a higher level, creates desertification, tornadoes and storms. In our present research project, we constructed our own system to extract carbon dioxide directly from the atmospheric air at the room conditions and investigated how to convert the gas into a useful mineral or Nano scale fibers made of carbon by using several chemical processes and chemical reactions leading to a valuable building material and also to mitigate the environmental negative change. In the present water pool system (Carbone Dioxide Domestic Extractor), the ocean-sea water was used to dissolve the CO2 gas from the room and converted into carbonate minerals by using a number of additives like shampoo, clay and MgO. Note that the atmospheric air includes CO2 gas has circulated within the sea water by air pump connected to a perforated tubes fixed deep on the pool base. Those chemical agents were mixed with the ocean-sea water to convert the formed acid from the water-CO2 reaction into a useful mineral. After we successfully constructed the system, we did intense experiments and investigations on the CO2 gas reduction level and found which is the optimum active chemical agent to work in the atmospheric conditions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=global%20warming" title="global warming">global warming</a>, <a href="https://publications.waset.org/abstracts/search?q=CO%E2%82%82%20gas" title=" CO₂ gas"> CO₂ gas</a>, <a href="https://publications.waset.org/abstracts/search?q=ocean-sea%20water" title=" ocean-sea water"> ocean-sea water</a>, <a href="https://publications.waset.org/abstracts/search?q=additives" title=" additives"> additives</a>, <a href="https://publications.waset.org/abstracts/search?q=solubility%20level" title=" solubility level"> solubility level</a> </p> <a href="https://publications.waset.org/abstracts/166931/extracting-the-atmospheric-carbon-dioxide-and-convert-it-into-useful-minerals-at-the-room-conditions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/166931.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">80</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">7410</span> Adiabatic Flame Temperature: New Calculation Methode</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Muthana%20Abdul%20Mjed%20Jamel%20Al-gburi">Muthana Abdul Mjed Jamel Al-gburi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present paper introduces the methane-air flame and its main chemical reaction, the mass burning rate, the burning velocity, and the most important parameter, the adiabatic and its evaluation. Those major important flame parameters will be mathematically formulated and computerized using the MATLAB program. The present program established a new technique to decide the true adiabatic flame temperature. The new technique implements the trial and error procedure to obtained the calculated total internal energy of the product species then evaluate of the reactants ones, from both, we can draw two energy lines their intersection will decide the true required temperature. The obtained results show accurate evaluation for the atmospheric Stoichiometric (Φ=1.05) methane-air flame, and the value was 2136.36 K. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=1-%20methane-air%20flame" title="1- methane-air flame">1- methane-air flame</a>, <a href="https://publications.waset.org/abstracts/search?q=2-" title=" 2-"> 2-</a>, <a href="https://publications.waset.org/abstracts/search?q=adiabatic%20flame%20temperature" title=" adiabatic flame temperature"> adiabatic flame temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=3-" title=" 3-"> 3-</a>, <a href="https://publications.waset.org/abstracts/search?q=reaction%20model" title=" reaction model"> reaction model</a>, <a href="https://publications.waset.org/abstracts/search?q=4-%20matlab%20program" title=" 4- matlab program"> 4- matlab program</a>, <a href="https://publications.waset.org/abstracts/search?q=5-" title=" 5-"> 5-</a>, <a href="https://publications.waset.org/abstracts/search?q=new%20technique" title=" new technique"> new technique</a> </p> <a href="https://publications.waset.org/abstracts/166893/adiabatic-flame-temperature-new-calculation-methode" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/166893.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">74</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=atmospheric%20temperature&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=atmospheric%20temperature&page=3">3</a></li> <li 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