The allelopathic effects of Bidens pilosa aqueous extracts in different months within ayear on seed germination and seedling growth of radish,rice and cucumber weretested.
测定一年中不同月份采集的三叶鬼针草叶片的水抽提物对萝卜、水稻、黄瓜３种植物种子萌发和幼苗生长的影响。
Comparied with the checks of aqueous extractsfrom other 7 piants.
本研究证实了蟛蜞菊水抽提物对萝卜、绿豆、黄瓜、水稻４种植物幼苗生长和水稻种子萌发的生化他感作用，与对照的７种植物水抽提物比较，蟛蜞菊的生化他感作用最强。
Eucalyptus urophylla was used to examine its allelopathic effects on four Leaume species: Acacia confusa,Acacia auriculaeformis,Acacia mangium and Albizia falcataria by way of laboratory bioassay with fresh leaf volatiles,as well as various concentration of leaf water extracts.
结果表明:①叶片自然挥发物对4种植物的种子萌发均无显著影响,但对台湾相思和南洋楹的茎生长有极显著的抑制,而对大叶相思和马占相思的根生长则有极显著的促进;②清水浸提24 h所得的叶片水抽提物对4种植物的种子萌发均无显著影响,对台湾相思、马占相思和南洋楹的根和茎生长有极显著的抑制,而对大叶相思的茎生长则有极显著的促进;③清水浸提72 h并减压浓缩后,配成的不同质量浓度的叶片水抽提物对4种植物的种子发芽率的影响都较小,对根生长的抑制作用随浓度的升高而增强,而对大叶相思、马占相思和南洋楹茎生长的影响则有低浓度促进、高浓度抑制的趋势。
Chemical features of extracts from source rocks in coal measures with different polarity solvents;
煤系烃源岩不同极性溶剂抽提物基本地球化学特征
There is a great difference in the gross composition and biomarker distribution between chloroform extracts of coal and oil from coal measures, which results in a difficulty in oil-source correlation in a coal-bearing petrolific basin.
煤的氯仿抽提物族组成和生物标志物分布特征与煤系原油存在很大差别,导致含煤沉积盆地中煤系原油的油源确认十分困难。
The progress of the solvent extraction of coal and the characterization methods of extracts were reviewed.
主要介绍了煤的熔剂抽提过程中抽提溶剂的选择 (相似相容 )和煤种、溶剂、煤的岩相组成、抽提条件等影响抽提率的因素 ,以及使用柱色谱、薄层色谱和固相萃取等方法对样品进行前处理 ,并通过质谱、凝胶渗透色谱和液相色谱 -质谱联用仪等现代仪器分析手段测定抽提物的组成、结构等的研究方法 ,揭示了煤中部分有机质的分子结构和分子量分布等性质 ,综述了近年来煤的溶剂抽提及抽提物表征方面的研究进
Study on the preparation of yeast extract and its application to soy fermented mash;
酵母抽提物的制取及入醪发酵生产酱油的试验
Study on the Anti-virus Activity of the Extracts from Plant or Edible Fungus;
植物及大型真菌抽提物抗植物病毒活性的研究
This article studied the addition of spice and sauce tune in the yeast autolysis to prepare extract,and the influences of the temperature、pH、the quantity of sauce tune on autolysis of yeast cell was also discussed.
添加香料、酱曲精进行酵母自溶制备抽提物,试验了温度、pH值、酱曲精加入量对酵母细胞自溶的影响。
Health care effect of extraction in perilla seed coat;
紫苏种子皮抽提物保健作用初探
By means of experiments have been proved extraction of perilla stem and leaves had the capability of antigerm.
本文通过实验证实了紫苏茎叶抽提物具有抗菌能力 ,并将紫苏茎叶用于治疗流行性腮腺炎的临床观察 ,疗效明
RELATIONSHIP BETWEEN ALLELOPATHIC EFFECTS OF Bidens pilosa AQUEOUS EXTRACTS AND RAINFALL
三叶鬼针草水抽提物他感作用与降雨量的关系
The Induced Discoloration of Robinia Pseudoacacia Treated by Saturated Vapor and Characters of the Extractive
刺槐饱和水蒸气诱发变色及抽提物特性
lift [suction] pump
吸取泵，吸取抽机，提水泵
methanol-acetone-benzene extract
甲醇-丙酮-苯抽提物
Spices and condiments-Determination of cold-water soluble extract
GB/T12729.11-1991香辛料和调味品冷水可溶性抽提物的测定
Effects of extractives on induced discoloration of Betula costata Trautv treated by saturated steaming.
饱和水蒸气条件下抽提物对枫桦诱发变色的影响
To raise or move gas or liquid with a pump.
以抽水机抽水用泵提升或移动气体或液体
I was holding a jug while Annie pumped.
我提着一把水壶，安妮在抽水。
convey, draw off, or empty by or as if by a siphon.
像用吸水管传递提取或抽干水。
Use pumped water power storage to improve economic benefit of power utilization in water supplying industries;
利用抽水蓄能提高供水企业用电效益
Optimization of microwave-assisted extraction coal and analysis of soluble fraction and residue
微波辅助抽提煤的条件优化及抽提物和残煤的分析
Copper was reduced from 20 mg/l to below detectable limits by sulfide precipitation from a gold-ore extraction wastewater.
用硫化物沉淀法可将金矿抽提废水中的铜含量从20毫克／升降到可检测标准以下。
Pulps--Determination of dichloromethane soluble matter
GB/T7979-1987纸浆二氯甲烷抽提物的测定法
Osteoinductive activity of extracts can beincreased by partial purification.
抽提物经初步纯化后，活性有所增强。
The Selecting Collection of Solvent Extracts of Coal;
煤溶剂抽提产物的选择性富集及分析
Influence on the MUF Adhesion Result by the Benzene-alcohol Extractives from Teak
柚木苯醇抽提物对MUF胶合效果的影响
The research on preparation of meat flavors from yeast extract
酵母抽提物生产猪肉香精的工艺研究
Study on antimicrobial activity of the extracts of Macrocybe gigantean
巨大口蘑子实体抽提物抑菌活性研究