查询词典 formaldehyde

To broaden desert shrub new utilizing fields, accelerate desert shrub developing to the direction of high added-value and high benefit, the paper studied on the liquefaction of Salix, Caragana and Poplar in the presence of Phenol under sulfuric acid catalysis. The optimum processing parameters for Salix, Caragana and Poplar liquefaction and resinification were investigated. The effect of molar ratio of formaldehyde to liquefied products and NaOH to liquefied products on the character and glue strength of liquefied products resin was studied.

摘 要：为了开辟沙生灌木资源新的应用领域，促使沙生灌木资源的利用向高附加值、高效益的方向发展，本文以苯酚作液化剂，以稀硫酸作催化剂对沙柳、柠条和杨木进行液化实验，分析了反应温度、液比、催化剂用量及液化时间对液化反应的影响；并研究了沙柳、柠条和杨木液化产物树脂化合成工艺和配方，分析了不同的甲醛与液化产物摩尔比以及氢氧化钠与液化产物摩尔比对沙柳、柠条和杨木液化产物树脂的各项性能的影响。

Objective:To study the effects of formaldehyde on Bcl-2, Bax expression in spermatogenic cell of mice and ultrastructural changes in spermatogenic cell.

目的：研究甲醛对小鼠睾丸生精细胞Bcl-2、Bax蛋白表达及超微结构的改变。

OBJECTIVE To investigate the degradation kinetics of sodium formaldehyde sulfoxylate.

中文摘要：目的研究药用抗氧剂甲醛合次硫酸氢钠在水溶液中氧化反应的反应速率常数。

And no longer be used as a food additive in food. The use of "formaldehyde sulfoxylate" can improve the appearance and taste of food.

事件 龙口粉丝被查出甲醛次硫酸氢钠专家介绍，&甲醛次硫酸氢钠&是一种有毒的工业用漂白剂，对人体有严重的毒副作用，国家严禁将其作为食品添加剂在食品中使用。

Fans into formaldehyde sulfoxylate can make it tough, Smoothness and delicious, not white.

使用&甲醛次硫酸氢钠&能改善食品的外观和口感，粉丝放入甲醛次硫酸氢钠可使其变得韧性好、爽滑可口、不易煮烂。

To determine the rate constants of oxidation reaction between sodium formaldehyde sulfoxylate and oxygen in aqueous solutions at different pH values, different temperatures, different buffer concentrations and different dissolved oxygen concentrations.

考查在不同PH值，不同缓冲液浓度，不同温度，不同溶解氧浓度的条件下甲醛合次硫酸氢钠在水溶液中与氧反应的反应动力学特征。

METHODS The residual concentrations of sodium formaldehyde sulfoxylate in the solutions were determined by iodimetry, the datas were fitted by linear regressions and then ...

在高精度电热恒温箱中在不断通入空气或医用纯氧的情况下，采用碘量法测定甲醛合次硫酸氢钠在水溶液中不同时刻的浓度，作出降解曲线，将测得的数据进行降解动力学方程的拟合并获得动力学参数，并计算反应速率常数。

AACC 48-42 is of high accuracy,good repetition,and is little influenced by additives of CaCO3,basic MgCO3,Benzoyl Peroxide,and sodium formaldehyde sulfoxylate...

经AACC48-42法检测我国市场上1748个小麦粉溴酸钾的添加现状，发现我国市场上不同类型的小麦粉中溴酸钾平均检出率为7.04%。

To judge the existance of sodium formaldehyde sulfoxylate in food by comprehensive checking of HCHO content and SO_2/HCHO content ratio is accurate and scientific.

采用直接蒸馏滴定———AHMT分光光度法联合测定食品中的吊白块含量。

Based on seed-emulsion polymerization, the stable silicon-acralyte core/shell latex with little coagulum were synthesized at lower temperature with potassuim persulphate, sodium formaldehyde sulfoxylate and V-044 as composite initiators.

选用过硫酸钾、甲醛合次亚硫酸氢钠和2， 2'-偶氮二[2-（2-咪唑啉－2-代）丙烷]二氢氯化物(V-O44)为复合引发剂，在低温下通过种子乳液聚合技术合成了生成凝聚物少的硅－丙核／壳乳液。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。