搜索结果: 1-9 共查到“理学 EPA”相关记录9条 . 查询时间(0.078 秒)
Study:Climate Change Could Outpace EPA Lake Champlain Protections
Climate Change EPA Lake Champlain Protections
2016/11/29
New research suggests that Lake Champlain may be more susceptible to damage from climate change than was previously understood—and that, therefore, the rules created by the EPA to protect the lake may...
为研究EPA和DHA对黄鳝脂类代谢、生长及繁殖性能的影响, 用添加有EPA和DHA比例相同(EPA/DHA=0.35)但水平不同(EPA和DHA总量分别为0.00%、0.35%、0.70%)的3种等氮等脂肪饲料,在常温(22—30 ℃)下,分别喂养平均体重为(21.71±0.54)g的黄鳝7周,分析黄鳝脂类代谢和生长性能,然后每组取15尾继续养殖至性腺发育成熟用于繁殖性能分析。结果表明:在饲料中添...
体外培养草鱼前体脂肪细胞,并用不同浓度(0-100 μmol/L)二十碳五烯酸(eicosapentaenoic acid, EPA)进行处理,噻唑兰比色法(Methyl thiazolte trazoliu, MTT)和油红O染色提取法检测EPA对细胞增殖及分化的影响, Real-time qPCR检测过氧化物酶增殖激活受体家族(Peroxidase proliferation activate...
Is a low EPA growth saturation threshold supported by the data presented inBecker and Boersma (2005)?
a low EPA growth saturation threshold the data presented in Becker Boersma
2014/4/16
Becker and Boersma (2005) report on the effect of essential fatty acid and phosphorus limitation onDaphnia growth and reproduction. Their study reaches several novel and provocative conclusions includ...
UChicago climate scientists share concerns about global warming at EPA hearings
UChicago climate scientists global warming EPA hearings
2009/12/8
Two University of Chicago scientists last week appeared at EPA hearings in Rosemont, Ill., to offer support for proposed new regulations on carbon-dioxide emissions from large power plants.The comment...
高纯度EPA/DHA甘油三酯的酶法合成
EPA/DHA甘油三酯 EPA/DHA甘油三酯 脂肪酶
2009/11/5
利用脂肪酶分别催化游离型EPA和DHA与甘油发生酯化反应生成甘油三酯，考察了合成的影响因素. 结果表明，正己烷6 mL，甘油/EPA(DHA)摩尔比为1:3(以0.4 mmol甘油为基准)，Novozym 435添加量为100 mg，反应温度40℃，振荡频率150 r/min，反应24 h后添加1 g分子筛，反应时间48 h，EPA甘油三酯与DHA甘油三酯的得率分别可达88.64%和88.07%，...
REVIEW OF U.S. EPA-RECOMMENDED AND GERMAN WELLHEAD PROTECTION AREA DELINEATION METHODS
wellhead protection area water supplies Environmental Protection Agency
2009/10/12
The surface and subsurface area around wells that is delineated with the sole purpose of protecting water supplies from potential contamination is known as a wellhead protection area (WHPA). Federal r...
A Comparative Study of Air Quality Index Based on Factor Analysis and US-EPA Methods for an Urban Environment
Eclipsing effect Maximum operator concept (MOC) Principal component analysis (PCA) Variance, Ranking
2016/3/29
There are many different air quality indexes, which represent the global urban air pollution situation.
Although the index proposed by USEPA gives an overall assessment of air quality, it does not in...
培养海洋微藻Isocrysis galbana生产EPA和DHA。
2007/7/28
期刊信息
篇名
培养海洋微藻Isocrysis galbana生产EPA和DHA。
语种
中文
撰写或编译
作者
戴俊彪，吴庆余
第一作者单位
刊物名称
海洋科学
页面
1999（3）：36-39。
出版日期
1999年
月
日
文章标识(ISSN)
相关项目
单细胞金藻Isochrysis galbana的异养转化和脂类分析