以水性聚氨酯和水性丙烯酸的水溶液为包膜材料,添加粘结剂,采用流化床包涂的方法制备新型缓控释肥料。
Water-based polyurethane and aqueous acrylic solutions were used as coating materials, Binder was added and new controlled-release fertilizers were prepared by using a fluidized-bed-coating method.
学习酸,碱和盐的基础知识。理解在化学中对它们的定义。研究平衡的概念并了解简单的酸,碱,盐(在水溶液中)如何反应。
Look at basic acids, bases, and salts. Understand the definition for use in chemistry. Explore the concept of equilibrium and how (when aqueous) basic acids, bases, and salts react.
应用电化学方法研究了磷酸锌在水溶液和醇酸涂层中的缓蚀性能和缓蚀作用机理。
The difference of inhibition mechanism of zinc phosphate in aqueous solution and in alkyd coating has been studied by using electrochemical techniques.
用丙烯酸蔗糖酯代替价格昂贵的烯丙基蔗糖醚作为交联剂,用过硫酸钾为引发剂,在水溶液中反应制取卡波姆。
Sucrose acrylate is used as a crosslinking agent instead of the expensive sucrose ether, and potassium persulfate is used as a initiator to prepare carbomer in the water solution.
用蒸馏水或乙醇水溶液抽提试样中的水溶性酸或碱,然后用酸度计或指示剂对抽提物进行测定。
It USES distilled water and alcohol to refine water soluble acid and alkali of sample and then test the extractive with PH indicator.
用稀醋酸水溶液作为脱钙剂,环烷酸钙作为模型有机钙化合物,研究了反应条件以及原油三组分的存在对脱钙的影响。
The influences of reaction conditions and petroleum fractions on the removal of calcium by dilute aqueous acetic acid were investigated using calcium naphthenate as model compound.
它的水溶液,或者做成石蕊纸后,是最古老和最常用的指示剂,可以指示一种物质是酸还是碱。
In the form of a water solution or as litmus paper, it is the oldest and most-used indicator of whether a substance is an acid or a Base.
该消泡剂为脂肪酸酯类物质和增效剂的复合物,无毒无臭,易于生物降解,是一种溶于水的凝固状产品,其水溶液为淡乳黄色。
The defoamer, the compound of fatty acid component and synergist, is non-toxic, odourless and easy to degrade, which is a coagulative solubility product. And its solution is light creamy yellow.
同时从固化淤泥孔隙水溶液中化学成分变化的角度进一步解释腐殖酸对淤泥固化效果的影响机理。
In addition, from the point of view of chemical component change in the pore liquid of solidification silt explains the influence mechanism.
使用胶束水溶液作为纸色谱法的展开剂,分离了酚酸,并尝试了8种有机改性剂对分离的影响。
Phenol acids are separated by paper chromatography with mobile phase of micellar aqueous solution. The effect of 8 kinds organic additive in micellar paper chromatography are discussed.
在静态下,考察了温度对聚酰胺树脂吸附水溶液中苦味酸的影响,探讨了吸附的热力学、动力学规律。
The thermodynamics and dynamics for adsorption of picric acid onto polyamide under static conditions were studied and the influence of temperature on the adsorption was also inspected.
采用含甲醇的水溶液,选择性地提取鲜淡菜中软骨藻酸,经离心、过滤等手段进行样品处理,在最优化的条件下进行液相色谱检测。
The method includes the selective extraction of domoic acid in fresh mussel, the pretreatment with centrifuge and filter, chromatographic analysis in the optimized conditions.
证明中性脂质体包裹的水杨酸铜的SOD样活性比水杨酸铜在水溶液中提高了3倍多。
The results showed that the SOD-like activity of copper salicylate encapsulated in neutral liposomes was enhanced over 3 times more than that of copper salicylate in aqueous solution.
采用自由基水溶液聚合方法合成了超高分子量的丙烯酸(钠)聚合物。
By the method of free-radical polymerization in solution, cross-linked copolymer of sodium acrylate and acrylic acid of super-high molecular weight.
根据化学动力学原理,采用恒温加速试验方法对阿魏酸水溶液的化学稳定性进行了研究,通过高效液相色谱法测定样品中阿魏酸含量。
The chemical stability of aqueous solution of ferulic acid was studied by the constant temperature accelerated test according to the princiPle of chemical dynamics.
不饱和脂肪酸及其酯很容易氧化,关于其在油相和水溶液中氧化行为的报道不尽相同。
Lipids with high PUFAs content are susceptible to oxidation and it is reported that the oxidation of an unsaturated substrate in aqueous solution is different from that in bulk oil.
对吡啶核苷酸辅酶在水溶液中的骨干构象的亲密细节描写。
Delineation of the intimate details of the backbone conformation of pyridine nucleotide coenzymes in aqueous solution.
通常,钙添加剂包含碳酸钙在柠檬酸水溶液中的混悬液。
Generally, the calcium additives comprise suspensions of calcium carbonate in acidic aqueous solutions such as citric acid solutions.
一种不能形成凝胶的低盐蛋白质溶液是由动物肌肉组织通过形成酸性蛋白质水溶液、过滤所述酸性蛋白质水溶液除去盐和酸获得的。
A low salt protein solution not capable of forming a gel is obtained from animal muscle tissue by forming an aqueous acidic protein solution which is filtered to remove salt and acid.
使水溶液成酸性则生成不溶于水的游离酸,粘度降低。
Into the acidic aqueous solution generate the free acid does not dissolve in water and viscosity reduction.
研究了以乙醇水溶液为溶剂提取金银花中绿原酸的最佳工艺。
The optimum conditions for the extraction of chlorogenic acid from Flos Lonicerae with ethanol water as the solvent were studied.
在苯乙烯-丙烯酸无规共聚物的钠盐水溶液中合成了尺寸均一的球形碳酸钙复合物。
The spherical CaCO3 compounds with even size are synthesized in the sodium salt solution of the amphiphilic random copolymer of acrylic acid and styrene.
使用的萃取溶剂可以是有机溶剂、缓冲盐水溶液、水和少量的无机酸。
The ASE 150 can be used with organic solvent, aqueous buffer, water, and small amounts of mineral acids.
此牌号应用很广,它具有良好的在硝酸、大部分有机酸和无机酸水溶液、磷酸、碱及煤气等介质中的耐腐蚀性。
Widely utilized. Excellent resisting capacity to nitric acid, water solution of most, organic and inorganic acids, phosphoric acid, alkali and coal gas.
采用醇碱水溶液萃取方法分离出辽河油直馏柴油馏分中的石油羧酸(主要为环烷酸),采用重量法测出的分离效率不低于90%;
The petroleum carboxylic acids(mainly naphthene acids)in the diesel oil of Liaohe oil isolated by the extraction with solution of a1coholic sodium hydroxide, and the efficiency is not lower than 90%;
本文介绍一种用硫酸水溶液自食品工业废弃物中提取植酸的工艺。
This paper presents an optimized technology of phytic acid prepared by aqueous H_2SO_4 extracts from wastes of the food industry, which saves investment of production owing to avoiding anion-exchange.
本文介绍一种用硫酸水溶液自食品工业废弃物中提取植酸的工艺。
This paper presents an optimized technology of phytic acid prepared by aqueous H_2SO_4 extracts from wastes of the food industry, which saves investment of production owing to avoiding anion-exchange.
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