propionic的例句大全

The N of indole-3-propionic acid is protected by pivaloyl chloride, and then thionyl chloride and aluminum chloride for acylation cyclization. 2.

用特戊酰氯对吲哚-3-丙酸上的N进行保护，然后用氯化亚砜和三氯化铝进行酰化反应关环。

Studies on the esterification reaction coupling pervaporation membrane separation ( I)── Esterfication of propionic acid/ isopropanol and it's process, parameters

渗透汽化膜分离耦合酯化反应的研究（Ⅰ）&丙酸/异丙醇的酯化反应及其过程参数

Separation of Propionic Acid-producing Bacteria from Site Fermented Grains and Daqu

特香型酒糟醅及大曲中丙酸产生菌的筛选

Determination of Propionic Acid, Malic Acid and Citric Acid in the Soil by Gas Chromatography

气相色谱法测定土壤中丙酸、苹果酸、柠檬酸

Association Mechanism for Extraction of Propionic Acid by Trioctylamine

三正辛胺与丙酸的萃取机理

In the experiment, ethyl propionate was synthesized by reaction of propionic acid with absolute ethyl alcohol in the presence ofp-Toluene sulfonic acid.

以丙酸和无水乙醇为原料，对甲苯磺酸作催化剂合成了丙酸乙酯。

Research Progress on Propionic Acid Accumulation and Control in Anaerobic Digestion System

厌氧消化系统中丙酸积累及控制研究进展

Frankia sp Cel 517 can show higher nitrogenase activity in a defined medium containing propionic acid as C_source.

由木麻黄（CasuarinaeguisetifoliaL）根瘤中分离的内生菌FrankiaspCel517菌株，可在以丙酸为碳源的限定培养基中表现出较高的固氮酶活性。

When supplied level in-100 mEq/ kg and-150mEq/ kg, there were remarkable differences about acetic acid density, propionic acid density and acetic acid/ propionic acid proportion ( P < 0.05).

当添加水平在-100mEq/kg和-150mEq/kg时，对乙酸浓度、丙酸浓度及乙酸/丙酸比例影响差异均为显著（P

Starting from toluene diisocyanate ( TDI), polypropylene glycol ( PPG) and dimethylol propionic acid ( DMPA), the anionic water-borne polyurethane emulsion was synthesized.

以甲苯二异氰酸酯（TDI）、聚丙二醇（PPG）、二羟甲基丙酸（DMPA）为原料，制备了阴离子型水性聚氨酯乳液。

Ionomer-type of polyurethane ( PU) emulsion was prepared from toluene diisocyanate, polypropylene glycol and dimethylol propionic acid, following a self-emulsification process. The modified PVC emulsion resin was obtained by in-situ emulsion copolymerization using PU as seeds in an autoclave.

由甲苯二异氰酸酯、聚醚和二羟甲基丙酸合成了自乳化阴离子水性聚氨酯（PU），以此为种子在高压釜中进行氯乙烯原位接枝共聚制备PU/PVC复合乳液树脂。

The Studies of Catalysis and Chemical Reaction Engineering on Hydroesterification of Ethylene to Synthesis of Propionic Ester

乙烯氢酯基化合成丙酸酯的催化及反应工程研究

mangiferin as original compound, h+ as catalyst, anhydride as solvent, mangiferin respectively reacted with acetic anhydride, propionic anhydride and butyric anhydride to produce esterified-derivatives.

化学合成。以芒果苷为起始化合物，以酸酐为溶剂，以H+为催化剂，使芒果苷分别与乙酸酐、丙酸酐和丁酸酐反应，生成芒果苷酯化衍生物。

yellow water, as the by-product during the production of liquor, was used as the substrate to produce propionic acid. analysis of caproic acid fermenting liquid and organic acids in yellow water(ⅰ)

研究了固定化丙酸菌利用黄水发酵产丙酸。己酸发酵液和黄水中有机酸分析（第一报）

preparation of propionic acid by propionaldehyde oxidation

丙醛氧化制丙酸

propionic acid type fermentation, butyric acid type fermentation and ethanol type fermentation are three typical fermentation types during anaerobic acidogenic process of organic wastewater, and have different ability for hydrogen production.

通过连续流搅拌槽式反应器的运行，比较了丙酸型发酵、丁酸型发酵和乙醇型发酵等3种不同有机废水产酸发酵类型的产氢能力。

the effects of calciferous salts and propionic acid added to the artificial diet on growth and development of bombyx mori

人工饲料中几种钙盐及丙酸适宜添加量对稚蚕生长发育的影响

and 0.5% propionic acid, potassium sorbic acid and sodium benzoic acid solution all had better preservative action under low temperature of 5 ℃ to 8 ℃.

在5～8℃的低温条件下，0.5%浓度的丙酸、山梨酸钾和苯甲酸钠浸果2min均能达到较好的防腐效果。

liquid chromatography-tandem mass spectrometry ( lc-ms-ms) is used as a new method for the determination of the residue of 2,4-dichlorophenoxyacetic acid ( 2,4-d) and 2-( 2,4-dichlorophenoxy) propionic acid ( 2,4-dp) in grey cloth.

采用液相色谱-质谱-质谱法对坯布中残留农药2,4-滴和2,4-滴丙酸的检测进行研究。

toxicity of two mould inhibitor composed with propionic acid on rhizopus in silage

两种防霉剂与丙酸的组合对青贮牧草根霉菌毒力的研究