Search results for: L. Ivanauskas

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Ivanauskas</title> <meta name="description" content="Search results for: L. Ivanauskas"> <meta name="keywords" content="L. Ivanauskas"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none navbar-toggler ml-auto" type="button" data-toggle="collapse" data-target="#navbarMenu" aria-controls="navbarMenu" aria-expanded="false" aria-label="Toggle navigation"> <span class="navbar-toggler-icon"></span> </button> <div class="w-100"> <div class="d-none d-lg-flex flex-row-reverse"> <form method="get" action="https://waset.org/search" class="form-inline my-2 my-lg-0"> <input class="form-control mr-sm-2" type="search" placeholder="Search Conferences" value="L. 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Ivanauskas"> <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> 4</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: L. Ivanauskas</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4</span> Chemical Leaching of Metals from Landfill鈥檚 Fine Fraction</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=E.%20Balkauskait%C4%97">E. Balkauskait臈</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Bu%C4%8Dinskas"> A. Bu膷inskas</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Ivanauskas"> R. Ivanauskas</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Kriipsalu"> M. Kriipsalu</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20Denafas"> G. Denafas</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Leaching of heavy metals (chromium, zinc, copper) from the fine fraction of the Torma landfill (Estonia) was investigated. The leaching kinetics studies have determined the dependence of some metal’s concentration on the leaching time. Metals were leached with Aqua Regia, distilled water and EDTA (Ethylenediaminetetraacetic acid); process was most intensive 2 hours after the start of the experiment, except for copper with EDTA (0.5 h) and lead with EDTA (4 h). During leaching, steady concentrations of Fe, Mn, Cd and Pb were fully stabilized after 8 h; however concentrations of Cu and Ni were not stabilized after 10 h. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fine%20fraction" title="fine fraction">fine fraction</a>, <a href="https://publications.waset.org/abstracts/search?q=landfills" title=" landfills"> landfills</a>, <a href="https://publications.waset.org/abstracts/search?q=leached%20metals" title=" leached metals"> leached metals</a>, <a href="https://publications.waset.org/abstracts/search?q=leaching%20kinetics" title=" leaching kinetics"> leaching kinetics</a> </p> <a href="https://publications.waset.org/abstracts/112677/chemical-leaching-of-metals-from-landfills-fine-fraction" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/112677.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">3</span> Development of Antimicrobial Properties Nutraceuticals: Gummy Candies with Addition of Bovine Colostrum, Essential Oils and Probiotics </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=E.%20Bartkiene">E. Bartkiene</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Ruzauskas"> M. Ruzauskas</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20Lele"> V. Lele</a>, <a href="https://publications.waset.org/abstracts/search?q=P.%20Zavistanaviciute"> P. Zavistanaviciute</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20Bernatoniene"> J. Bernatoniene</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20Jakstas"> V. Jakstas</a>, <a href="https://publications.waset.org/abstracts/search?q=L.%20Ivanauskas"> L. Ivanauskas</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20Zadeike"> D. Zadeike</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20Klupsaite"> D. Klupsaite</a>, <a href="https://publications.waset.org/abstracts/search?q=P.%20Viskelis"> P. Viskelis</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20Bendoraitiene"> J. Bendoraitiene</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20Navikaite-Snipaitiene"> V. Navikaite-Snipaitiene</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20Juodeikiene"> G. Juodeikiene </a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, antimicrobial nutraceuticals; gummy candies (GC) from bovine colostrum (BC), essential oils (EOs), probiotic lactic acid bacteria (PLAB), and their combinations, were developed. For antimicrobial GC preparation, heteropolysaccharide (agar) was used. The antimicrobial properties of EOs (Eugenia caryophyllata, Thymus vulgaris, Citrus reticulata L., Citrus paradisi L.), BC, L. paracasei LUHS244, L. plantarum LUHS135, and their combinations against pathogenic bacteria strains (Streptococcus mutans, Enterococcus faecalis, Staphylococcus aureus, Salmonella enterica, Escherichia coli, Proteus mirabilis, and Pseudomonas aeruginosa) were evaluated. The highest antimicrobial properties by EO鈥檚 (Eugenia caryophyllata and Thymus vulgaris) were established. The optimal ingredients composition for antimicrobial GC preparation was established, which incorporate the BC fermented with L. paracasei LUHS244 in combination with Thymus vulgaris or Eugenia caryophyllata. These ingredients showed high inhibition properties of all tested pathogenic strains (except Pseudomonas aeruginosa). Antimicrobial GC formula consisting of thyme EO (up to 0.2%) and fermented BC (up to 3%), and for taste masking, mandarin or grapefruit EOs (up to 0.2%) was used. Developed GC high overall acceptability and antimicrobial properties, thus, antimicrobial GC could be a preferred form of nutraceuticals. This study was fulfilled with the support of the LSMU-KTU joint project. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=antimicrobial%20activity" title="antimicrobial activity">antimicrobial activity</a>, <a href="https://publications.waset.org/abstracts/search?q=bovine%20colostrum" title=" bovine colostrum"> bovine colostrum</a>, <a href="https://publications.waset.org/abstracts/search?q=essential%20oil" title=" essential oil"> essential oil</a>, <a href="https://publications.waset.org/abstracts/search?q=gummy%20candy" title=" gummy candy"> gummy candy</a>, <a href="https://publications.waset.org/abstracts/search?q=probiotic" title=" probiotic"> probiotic</a> </p> <a href="https://publications.waset.org/abstracts/80287/development-of-antimicrobial-properties-nutraceuticals-gummy-candies-with-addition-of-bovine-colostrum-essential-oils-and-probiotics" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/80287.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">173</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">2</span> Feasibilities for Recovering of Precious Metals from Printed Circuit Board Waste</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Simona%20Ziukaite">Simona Ziukaite</a>, <a href="https://publications.waset.org/abstracts/search?q=Remigijus%20Ivanauskas"> Remigijus Ivanauskas</a>, <a href="https://publications.waset.org/abstracts/search?q=Gintaras%20Denafas"> Gintaras Denafas</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Market development of electrical and electronic equipment and a short life cycle is driven by the increasing waste streams. Gold Au, copper Cu, silver Ag and palladium Pd can be found on printed circuit board. These metals make up the largest value of printed circuit board. Therefore, the printed circuit boards scrap is valuable as potential raw material for precious metals recovery. A comparison of Cu, Au, Ag, Pd recovery from waste printed circuit techniques was selected metals leaching of chemical reagents. The study was conducted using the selected multistage technique for Au, Cu, Ag, Pd recovery of printed circuit board. In the first and second metals leaching stages, as the elution reagent, 2M H2SO4 and H2O2 (35%) was used. In the third stage, leaching of precious metals used solution of 20 g/l of thiourea and 6 g/l of Fe2 (SO4)3. Verify the efficiency of the method was carried out the metals leaching test with aqua regia. Based on the experimental study, the leaching efficiency, using the preferred methodology, 60 % of Au and 85,5 % of Cu dissolution was achieved. Metals leaching efficiency after waste mechanical crushing and thermal treatment have been increased by 1,7 times (40 %) for copper, 1,6 times (37 %) for gold and 1,8 times (44 %) for silver. It was noticed that, the Au amount in old (> 20 years) waste is 17 times more, Cu amount - 4 times more, and Ag - 2 times more than in the new (< 1 years) waste. Palladium in the new printed circuit board waste has not been found, however, it was established that from 1 t of old printed circuit board waste can be recovered 1,064 g of Pd (leaching with aqua regia). It was found that from 1 t of old printed circuit board waste can be recovered 1,064 g of Ag. Precious metals recovery in Lithuania was estimated in this study. Given the amounts of generated printed circuit board waste, the limits for recovery of precious metals were identified. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=leaching%20efficiency" title="leaching efficiency">leaching efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=limits%20for%20recovery" title=" limits for recovery"> limits for recovery</a>, <a href="https://publications.waset.org/abstracts/search?q=precious%20metals%20recovery" title=" precious metals recovery"> precious metals recovery</a>, <a href="https://publications.waset.org/abstracts/search?q=printed%20circuit%20board%20waste" title=" printed circuit board waste"> printed circuit board waste</a> </p> <a href="https://publications.waset.org/abstracts/56918/feasibilities-for-recovering-of-precious-metals-from-printed-circuit-board-waste" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/56918.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">393</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">1</span> Juvenile Fish Associated with Pondweed and Charophyte Habitat: A Case Study Using Upgraded Pop-up Net in the Estuarine Part of the Curonian Lagoon</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Bu%C4%8Das">M. Bu膷as</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Skersonas"> A. Skersonas</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20Ivanauskas"> E. Ivanauskas</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20Lesutien%C4%97"> J. Lesutien臈</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Nika"> N. Nika</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20Sr%C4%97balien%C4%97"> G. Sr臈balien臈</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20Ti%C5%A1kus"> E. Ti拧kus</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20Gintauskas"> J. Gintauskas</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%C5%A0a%C5%A1kov"> A.艩a拧kov</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20Martin"> G. Martin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Submerged vegetation enhances heterogeneity of sublittoral habitats; therefore, macrophyte stands are essential elements of aquatic ecosystems to maintain a diverse fish fauna. Fish-habitat relations have been extensively studied in streams and coastal waters, but in lakes and estuaries are still underestimated. The aim of this study is to assess temporal (diurnal and seasonal) patterns of fish juvenile assemblages associated with common submerged macrophyte habitats, which have significantly spread during the recent decade in the upper littoral part of the Curonian Lagoon. The assessment was performed by means of an upgraded pop-up net approach resulting in much precise sampling versus other techniques. The optimal number of samples (i.e., pop-up nets) required to cover>80% of the total number of fish species depended on the time of the day in both study sites: at least 7and 9 nets in the evening (18-24 pm) in the Southern and Northern study sites, respectively. In total, 14 fish species were recorded, where perch and roach dominated (respectively 48% and 24%). From multivariate analysis, water salinity and seasonality (temperature or sampling month) were primary factors determining fish assemblage composition. The southern littoral area, less affected by brackish water conditions, hosted a higher number of species (13) than in the Northern site (8). In the latter site, brackish water tolerant species (three-spined and nine-spined sticklebacks, spiny loach, roach, and round goby) were more abundant than in the Southern site. Perch and ruffe dominated in the Southern site. Spiny loach and nine-spined stickleback were more frequent in September, while ruffe, perch, and roach occurred more in July. The diel dynamics of the common species such as perch, roach, and ruffe followed the general pattern, but it was species specific and depended on the study site, habitat, and month. The species composition between macrophyte habitats did not significantly differ; however, it differed from the results obtained in 2005 at both study sites indicating the importance of expanded charophyte stands during the last decade in the littoral zone. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=diel%20dynamics" title="diel dynamics">diel dynamics</a>, <a href="https://publications.waset.org/abstracts/search?q=charophytes" title=" charophytes"> charophytes</a>, <a href="https://publications.waset.org/abstracts/search?q=pondweeds" title=" pondweeds"> pondweeds</a>, <a href="https://publications.waset.org/abstracts/search?q=herbivorous%20and%20benthivorous%20fishes" title=" herbivorous and benthivorous fishes"> herbivorous and benthivorous fishes</a>, <a href="https://publications.waset.org/abstracts/search?q=littoral" title=" littoral"> littoral</a>, <a href="https://publications.waset.org/abstracts/search?q=nursery%20habitat" title=" nursery habitat"> nursery habitat</a>, <a href="https://publications.waset.org/abstracts/search?q=shelter" title=" shelter"> shelter</a> </p> <a href="https://publications.waset.org/abstracts/141088/juvenile-fish-associated-with-pondweed-and-charophyte-habitat-a-case-study-using-upgraded-pop-up-net-in-the-estuarine-part-of-the-curonian-lagoon" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/141088.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">189</span> </span> </div> </div> </div> </main> <footer> <div id="infolinks" class="pt-3 pb-2"> <div class="container"> <div style="background-color:#f5f5f5;" class="p-3"> <div class="row"> <div class="col-md-2"> <ul class="list-unstyled"> About <li><a href="https://waset.org/page/support">About 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Search results for: L. Ivanauskas