查询词典 acid value

Effects of ordinary silage and mixed silage on the Robinia pseudoacacia, Caragana and Amorpha fruticosa silage were studied by observing color, odor, texture, pH, organic acid composition and content, ammonia-N / total-N ratio, crude protein, neutral detergent fiber, acid detergent fiber and comparing their nutritive value before and after silaging. Results showed that silage quality of R.

对刺槐、柠条和紫穗槐进行了单独青贮和两两混合青贮，并从青贮饲料的色泽、气味、质地等感官品质，pH值、有机酸含量及组成、氨态氮／总氮比值这些发酵品质，以及粗蛋白、中性洗涤纤维和酸性洗涤纤维这些营养价值方面进行了分析评定。

The research suggested that the optimized pH value of CAB in pit mud is 5.5～6.5,the excessive content of caproic acid and the excessive accumulation of caproic acid in pit mud should be avoided.

研究指出，己酸菌在窖泥中的最适pH为5.5～6.5；不宜片面追求己酸在窖泥中的含量，应防止己酸在窖泥中的过量积累。

Conclusion］ The change of pH value of solution had effect on degree of ionization of fumaric acid,and then affected the adsorption quantity of basic resin on fumaric acid.

结论］溶液pH值的变化影响富马酸的离子化程度，进而影响碱性树脂对富马酸的吸附量。

The method comprises the steps that the molybdenum bearing spent catalyst is roasted and comminuted, then the molybdenum bearing spent catalyst is leach and filter by adopting alkaline solution bearing ammonia, ammonium bicarbonate and oxyful, and the secondary roasting and leaching are performed to the solids after filtration, the twice leaching solution is acidified and the aluminum is precipitated out, then is acidified continuously to precipitate out the molybdenum in the form of molybdic acid, the molybdic acid is dissolved by using ammonia water further, the pH value is adjusted again to obtain ammonium molybdate deposition, and the ammonium molybdate product is obtained after dryness.

将含钼废催化剂进行焙烧、粉碎，然后采用含氨、碳酸氢铵和双氧水的碱性溶液浸取并过滤，过滤后的固体物进行二次焙烧和浸取，两次浸取液酸化沉淀出铝，然后继续酸化将钼以钼酸形式沉淀出来，钼酸进一步用氨水溶解，再次调节pH值获得钼酸铵沉淀，干燥后得到钼酸铵产品。

This research utilizes the method of organic synthesis to put different amount of aminophenol into hydroxybenzoic acid or caffeic acid so as to produce a series of high yield of polyhydroxy benzamides (1~40).Through the following different activity tests, discussing the applied value of cosmetics.Ⅰ.

摘要 本研究主要利用有机合成方法，将具有不同数量及在不同位置之羟基取代之安息香酸及咖啡酸分别与胺基苯酚化合物进行醯胺化反应，得到一系列高产率之多酚醯胺类衍生物(1~40)，经由下列不同活性测试方法，探讨其化菻~上的应用价值。

The invention belongs to the technical field of environmental protection and in particular relates to a method for utilizing the fermentation effect of microbe in remained sludge to increase the propionic acid content in organic acid which is produced under the normal temperature through replenishing carbohydrate and controlling the pH value when in reaction, the method takes the remained sludge of sewage treatment plants and mixture of urban putrescible organic waste which is produced in everyday life as raw materials.

本发明属于环境保护技术领域，具体涉及一种通过补充碳水化合物和控制反应时的pH值，以污水处理厂的剩余污泥和日常生活中产生的城市易腐有机废物的混合物为原料，在常温条件下利用剩余污泥中微生物的发酵作用提高所生产有机酸中丙酸含量的方法。

The results showed that intermidiate 1, 2-propanediol-sebacate of low relative molecular mass was synthesized with toluene-p-sulfoinc acid as catalyst, benzene as watercarrying agent, and of mole ratio of sebacic acid to 1, 2-propanediol of 1:4. The glass-transition temperatures of PPSC were below 0 ℃ which confirmed that PPSC would be in a high-elastic state of ambient temperature and human body temperature. PPSC was a elastomer with moderate crosslinkage, low module and high elongation, and had rapid degradation ratio (degradation degree more than 50%) in phosphate (pH value 7.4) at 37℃.

结果表明，以对甲苯磺酸为催化剂、苯为带水剂，在酸醇比为1，4的条件下可合成较低相对分子质量的中间体癸二酸聚酯二元醇；PPSC弹性体的玻璃化转变温度在0℃以下，于室温及人体温度下处于高弹态；PPSC为适度交联的、低模量高伸长的弹性体，其在37℃、pH值为7.4的磷酸盆缓冲溶液中具有较快的降解性（降解度超过50%）。

The right formula of the TiO2 sol was found through discussing the influence of acetic acid and hydrochloric acid. Then in different factors such as temperature, pH value had been studied the experiments of the influences upon the time of TiO2 sol into gelation.On the surface of the textiles treated with the sol-gel process may form a thin sporous oxide film.

本论文将成功制备的稳定透明的TiO_2水溶胶用于纯棉织物后整理上，使织物具有一定的屏蔽紫外线和拒水的性能，并且研究了TiO_2水溶胶与环氧基改性硅氧烷水溶胶复合使用，对直接染料染色的织物进行后整理，能起到较好的固色效果。

The method has the advantages that: the high-concentration substrate inhibition is eliminated and nutritive materials are also supplemented through controlling the pH value in the fermentation environment and supplementing a carbon source and the substrate, so the thalli can grow in the suitable environment, the content of phenyllactic acid reaches 6 to 20g/L after the fermentation, the process is simple, the environmental pollution is less, the operation is convenient, and the output of phenyllactic acid is high.

本发明的优点是：通过控制发酵环境的pH，并补加碳源和底物，既解除了高浓度的底物抑制，又补充了营养物质，使得菌体能够在适宜的环境下生长，发酵结束后，苯乳酸的含量达到6～20g/L，工艺简单、环境污染小、操作方便、苯乳酸的产量高。

The bromine value of petroleum products was determined by potential titration in mixed solvents of glacial acetic acid,trichloromethane,methanoland sulfuric acid,this method was compared with indicator titration,the experimental results show the method relative standard deviation is smaller.

以冰醋酸、三氯甲烷、甲醇和1：5的硫酸(体积比为714：134：134：18)作为滴定溶剂，采用电位滴定法测定石油产品的溴值，并与指示剂滴定法进行对比。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。