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71 results for “Ester”
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Research ArticleOpen accessEvery word in the titleEnzymatic Kinetics of Fatty Acids Methyl Ester from Kapok Seed Oil (Ceiba Petandra) Using Lipozyme TL IMErin Ryantin Gunawan, Dedy Suhendra, Baiq Rizkia Miftahatul HasanahSynthesis of Fatty Acids Methyl Ester (FAME) utilizing oil extracted from kapok seeds (Ceiba petandra) and catalyzed by lipozyme TL. 1M via enzymatic kinetics transesterification was succesfully conducted A mixture of different FAME, widely known as biodiesel is one of the sources of renewable energy. A kinetic analysis was investigated to identify the reaction model and the rate equation and … …American Journal of Applied Sciences, Vol. 14, Issue 12 · 2 Jan 2018 · 9,310 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffects of Curing Temperature and MMA Content on the Working Life of MMA-Modified Vinyl Ester Polymer ConcreteKi-Bong Choi, Seung-Ho Min, Kyu-Seok YeonThe main purpose of this study is to identify the effects of curing temperature and methyl methacrylate (MMA) content on the working life of vinyl ester polymer concreteusing MMA as a monomer, N,N-dimethyl-p-toluidine (DMP) and methyl ethyl ketone peroxide (MEKPO) as initiators and cobalt naphthenate as a promoter. The results have shown that the working life of vinyl ester polymer … …American Journal of Applied Sciences, Vol. 14, Issue 1 · 23 Jan 2017 · 7,962 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleA Phenolic Ester of O-Desmethylvenlafaxine (ODV) Improves Uptake of ODV into the BrainYang Zhang, Zhichao Yang, Sen Zhao, Hongli ZhouIn this study, the in vitro stabilities of a promising O-Desmethylvenlafaxine (ODV) phenolic ester prodrug O-19 in aqueous solution, rat whole blood and rat liver microsomes were investigated. In addition, the in vivo drug metabolites were determined using LC-TOFMS-IDA-MS/MS. O-19 exhibits high stabilities at any pH encountered in the gastrointestinal tract, its half live (t1/2) spans the range 5.0±0.18 d … …American Journal of Biochemistry and Biotechnology, Vol. 12, Issue 4 · 11 Dec 2016 · 7,157 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleSetting Shrinkage Characteristics of Methyl Methacrylate-Modified Vinyl Ester Polymer ConcreteKi-Bong Choi, Seung-Ho Min, Kyu-Seok YeonThis study evaluated the setting shrinkage characteristics of Methyl Methacrylate (MMA)-modified vinyl ester polymer concrete with different curing ages, MMA contents and curing temperatures. Results have shown that most of the setting shrinkage developed within 24 h after curing initiation. It was also found that an increase in MMA content led to an almost linear decrease in setting shrinkage, indicating … …American Journal of Applied Sciences, Vol. 13, Issue 5 · 17 May 2016 · 8,300 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleAn Experimental Investigation on Performance of CI Engine Using Diesel, Esterified Cotton Seed Oil and Diethyl Carbonate as AdditiveVikram G. Kamble, Samson Paul PintoIn this study, Cotton seed oil ethyl ester was produced by transesterification process. The performance of diesel engine was experimentally investigated by using cotton seed oil ethyl ester as fuel. For the study cotton seed oil ethyl ester was mixed with diesel fuel and B20 blend was prepared. Also Diethyl Carbonate was added as an additive in 4, 8 and … …Energy Research Journal, Vol. 7, Issue 1 · 16 Dec 2015 · 7,445 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEXPERIMENTAL INVESTIGATION OF METHYL ESTER OF COTTON SEED OIL BLEND WITH DIESEL ON CI ENGINEK. Vijayaraj, A. P. SathiyagnanamPetroleum based fuels worldwide have not only resulted in the rapid depletion of conventional energy sources, but have also caused severe air pollution. The search for an alternate fuel has led to many findings due to which a wide variety of alternative fuels are available at our disposal now. The existing studies have revealed the use of vegetable oils for … …American Journal of Applied Sciences, Vol. 11, Issue 10 · 29 Oct 2014 · 6,765 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThe Effect of Prickly Poppy Methyl Ester Blends on Ci Engine Performance and Emission CharacteristicsP. Lawrence, P. Koshy Mathews, B. DeepanrajProblem statement: The aim of this research was to investigate the effect of using Prickly poppy methyl ester as a fuel blend on Diesel engine (CI engine) performance and exhaust emission. Approach: Short-term engine performance tests were conducted to evaluate and compare the use of various diesel fuel supplements at blend rations of 60/40, 70/30, 80/20, 90/10, in a standard, … …American Journal of Environmental Sciences, Vol. 7, Issue 2 · 26 May 2011 · 7,136 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleAccumulation of Cholesterol Esters in ex vivo Lymphocytes from Scrapie-susceptible Sheep and in Scrapie-infected Mouse Neuroblastoma Cell LinesAlessandra Pani, Claudia Norfo, Claudia Abete et al.Our studies on the role of cholesterol homeostasis in the pathogenesis of scrapie in sheep, revealed abnormal accumulation of cholesterol esters in brains and in ex vivo skin fibroblasts from genetically scrapie-susceptible, as compared to sheep with resistant genotype. We now report that PBMCs isolated from scrapie-susceptible sheep, as well as mouse neuroblastoma cell lines persistently infected with two different … …American Journal of Infectious Diseases, Vol. 3, Issue 3 · 30 Sep 2007 · 6,955 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleInhibition of Cholesterol Esterification Influences Cytokine Exspression in Lypopolisaccharide-activated P388D1 MacrophagesRosa Rita Bonatesta, Francesca Sanna, Sabrina Uda et al.Several in vivo and in vitro studies have demonstrated the involvement of infectious agents in the development of atherosclerosis. However, the mechanisms by which micro-organisms induce and/or aggravate atherosclerosis, are so far unclear. Accumulation of cholesterol esters and lipid laden cell formation are hallmark of the atherogenesis, however, the possible relationship between cholesterol esterification and the signal-transducing component of LPS … …American Journal of Infectious Diseases, Vol. 3, Issue 3 · 30 Sep 2007 · 7,481 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThe Effect of Antioxidants Supplement on Lipid Peroxidation and Serum Aryl Esterase Enzyme in Rheumatoid Arthritis PatientsMahsa Jalili, Seyed-Rafi Aref-Hosseini, Sousan Kolahi et al.Problem statement: Rheumatoid Arthritis (RA) is one of the common autoimmune diseases with unknown etiology that its prevalence ratio in females to males is 3:1. It has been suggested that serum antioxidant levels is reduced and lipid peroxidation is increased due to oxidative stress. According to a recent research, antioxidant supplements may play an important role in controlling oxidative stress. … …Current Research in Medicine, Vol. 2, Issue 2 · 2 Dec 2011 · 7,038 accessesView PDFCite