Selection of the extractants for available rare earths in soils.;
土壤中有效态稀土元素提取剂的选择
The Study of Extraction Method for Available Copper and Cadmium in Acidity Soil with Different Extractants
不同提取剂提取酸性土壤有效态Cu和Cd的方法研究
By comparing the extractants ability as well as analyzing the relationship of available fluoride contents and soil properties,1.
01mol/L CaCl2和H2O四种提取剂对污染土壤中元素氟的提取能力的分析比较,以及土壤性质与提取量的相关分析,确定了1。
Comparative studies on available Se extractants for acid paddy soils;
酸性水稻土有效硒提取剂的比较研究
Furthermore, extracting mechanisms and the elements that affect the extracting ability of extractants were compared and analysed.
在此基础上,评价了各类提取方法的特点及其在应用上的优势和局限,指出了筛选通用提取剂的原则和依据。
Comparison and selection of active nickel extraction from soil by four extractants(H2O,HCl,CaCl2 and DTPA) were conducted at different temperature,with various extracting time and a few ratio of soil to extractant.
结果表明,提取温度25～30℃范围内,Ni提取量除HCl外无明显变化,随着平衡时间的延长和土液比的减小,Ni提取量呈增加趋势;不同提取剂提取有效态Ni量与植物Ni吸收量均达显著和极显著正相关,与生物量呈显著或极显著负相关,较好地反映出植物Ni危害状况。
Two experiments were designed to estimate the potential N mineralization including a chemical extraction exper.
本文以黄土高原西部5龄和9龄紫花苜蓿草地为研究对象,(1)比较了热水、KCl和CaCl_2三种提取剂提取土壤矿质氮(硝态氮和铵态氮)的能力;(2)采用温室培养法研究了土壤起始矿质氮、施加外源氮肥和植被覆盖对紫花苜蓿草地土壤有机氮矿化的影响。
The synthetic technology of Neville acid has been improved by using precipitating agents and extracting agents.
用沉降剂和提取剂改进了尼文酸的生产工艺，消除了二氧化硫对环境的污染，提高了产品纯度，收率达９０％。
Study on extracting flavor effective component of artemisia argyi with solvent extraction and supercritical fluid extraction;
超临界CO_2和有机溶剂提取艾蒿叶中风味物质的研究
Objective:To optimize the solvent extraction of Rhubarbs.
目的:优选大黄溶剂提取工艺。
The technology of solvent extraction of Haoxian oily sludge is studied.
用溶剂提取法对胜利油田郝现联合站高含油罐底泥进行处理,得到最佳萃取剂及提取的最佳温度、剂泥质量比、提取次数等条件,使含油污泥中油提取率可达99。
The extraction solvent was also optimized.
同时对提取溶剂加以改进,采用NaCl-水-甲醇(10%:70:30)作为提取溶剂的提取效率最高。
Effects of different extraction solvents(100% methanol,80% methanol,80% ethanol,80% acetone and water) on the total polyphenol yield and antioxidant activity of barley were studied.
研究了体积分数100%的甲醇、体积分数80%的甲醇、体积分数80%的乙醇、体积分数80%的丙酮和水等5种不同提取溶剂对大麦游离多酚和结合多酚提取率的影响,以及不同溶剂提取物清除DPPH自由基能力的差异。
The present study clearly demonstrated the effects of extraction solvent mixtures on antioxidant activity evaluation and their extraction capacity and selectivity for free phenoli.
本文阐明了提取溶剂对大麦抗氧化力评价的影响,并系统研究了不同的提取溶剂对大麦中游离酚类化合物的提取能力和选择性。
Effect of Extractants on the Anthocyanin Extraction from Purple Corn
提取剂对紫玉米花青素提取量的影响
Study on ATP Extractor in ATP-Bioluminescence;
ATP生物发光法中ATP提取剂的研究
extraction indicator
抽提指示剂，萃取指示剂
controlled extraction process
控制提取法（溶剂防缩法）
Validation of Differential Extraction Kit in Forensic Sexual Assault Cases
差异提取试剂盒在混合斑DNA提取中的应用
Effects of solvents and processes of extraction on the yield of coix seed oil
提取方法和溶剂对薏苡仁油提取率的影响
Extraction of Siberian Cocklebur Oil:Effects of Solvents and Extraction Methods
溶剂和提取方法对苍耳子油提取的影响(英文)
A candy or preparation flavored with this extract.
薄荷糖或制剂加有夏至草提取液的糖果或制剂
Preservatives market in the world and advanced research on plant extracts;
国际防腐剂市场及植物提取物防腐剂研究进展
Selection of extractive distillation solvent for the purification of 1,2,3-trimethylbenzene from solvent oil
从溶剂油中提纯连三甲苯的萃取精馏溶剂选择
an addictive narcotic extracted from seed capsules of the opium poppy.
从罂粟的种子中提取的上瘾的麻醉剂。
a powerful cardiac stimulant obtained from foxglove.
从毛地黄中提取的一种强力的强心剂。
Quality Studies on the Extracts and Tablets of Panax Notoginseng and Herba Epimedii;
三七、淫羊藿提取物和片剂的质量研究
Study on the Extraction Process of Thymosin and its Preparation Stability;
胸腺肽提取工艺及其制剂稳定性研究
Research on the Flococculantion, Extraction and Mechanism of the Bioflocculant
微生物絮凝剂的絮凝、提取及机理研究
Study on Sulfuric Acid Pickling Inhibitor Extracted from Bamboo Leaves
从竹叶中提取硫酸酸洗缓蚀剂的研究
Compare Extraction Solvent of Oat Oil Polyphenols
燕麦油中多酚类物质提取溶剂的比较
EXPERIMENTAL STUDY ON THE SOLVENT EXTRACTION OF CANADA OIL SANDS
加拿大油砂溶剂提取分离的实验研究