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A clean production technology of sodium sulfoxylate formaldehyde by one-step process with sodium pyrosulfite ,zinc powder and formaldehyde as raw materials was studied in detail.

详细研究了以焦亚硫酸钠、锌粉和甲醛为原料,一步法合成甲醛合次硫酸氢钠的清洁生产工艺,其最佳操作条件为:焦亚硫酸钠与锌粉物质的量比约1∶2.5,焦亚硫酸钠与甲醛物质的量比约1∶2.1,亚硫酸氢钠溶液的pH 3.3~3.6,活化温度≤45℃,最高温度97~102℃,高温反应时间

In the daily chemical industry, sodium citrate is a good chemical agent that may replace trimerous polyamide sodium phosphate which produces public pollution, widely used for formatting various kinds of no pollution detergent.

在日化工业上,柠檬酸钠是替代产生公害的三聚磷酸钠的好的化学试剂,广泛用于合成各种无公害的洗涤剂。

MethodsThe pharmacological effects of the Ziziphus jujube leaf extract on the autonomic activities of mice, the time of sleep induced by pentobarbital sodium, the sleeping synergistic action of mice with barbital sodium at sub-threshold and hypnotic dosages and the central inhibitory effects in mice induced by amphetamine were investigated.

目的观察酸枣叶提取物对中枢神经系统作用。方法考察酸枣叶提取物对小鼠自主活动的影响、对延长戊巴比妥钠诱导的小鼠睡眠时间、对阈下巴比妥钠的睡眠协同作用以及对苯丙胺中枢兴奋作用的影响。

Three schemes of dealing with AH wash liq uor of high soda concentration were analyzed and compared. The results show th at when the AH wash liquor of total soda concentration 95.06g/L is transferred d irectly to dilution tank, soda concentration in overflow of the 1st mud washer c ould be lowered by about 6g/L and soda loss in red mud attached liquor could be lo we red by 0.25 kg Na2O per ton of alumina and therefore saving cost of about 549 000 RMB per year; moreover, suspension in AH wash liquor could be re-dissolved in to diluted liquor and it is favor not only to rise pregnant liquor R p andimprove precipitation process, but also to avoid alumina loss cost of about 353?000 RMB per year by the suspension settling into red mud.

分析比较了处理高浓度氢氧化铝洗液的3种方案,结果表明:将全碱浓度为95.06g/L的氢氧化铝洗液直接送到稀释槽,可使赤泥一洗槽溢流浓度降低约6g/L ,每吨氧化铝赤泥附碱损失减小0.25kg氧化钠,每年可节省碱耗费约54.9万元;而且还能将氢氧化铝洗液中的浮游物反溶解进入稀释液,有利于精液 R p(氧化铝与苛性氧化钠的质量比)的提高,同时避免了其进入赤泥而被损失,每年可减少氧化铝损失费约35.3万元。

Under these conditions several aryl iodides bearing a wide range of functional groups were converted into the corresponding aryl azides in good yields.

在重新优化后的条件下,大部分不活泼芳基溴化物可以与叠氮化钠发生交叉偶联反应得到良好收率的芳基叠氮化合物,但是有拉电子基团取代的芳基溴化物与叠氮化钠的偶联反应则难以进行。

Under these conditions several aryl iodides bearing awide range of functional groups were converted into the corresponding aryl azides in good yields.

在重新优化后的条件下,大部分不活泼芳基溴化物可以与叠氮化钠发生交叉偶联反应得到良好收率的芳基叠氮化储蓄型投资银条合物,但是有拉电子基团取代的芳基溴化物与叠氮化钠的偶联反应则难以进行。

In addition, the admixtures of D-sodium gluconate and glycin, D-sodium gluconate and ethanolamine have good inhibiting effect, too. 2. Corrosion inhibition and mechanism of reinforcing steel by D-sodium gluconate has been studied.

探明D—葡萄糖酸钠的缓蚀效果及缓蚀机理 D—葡萄糖酸钠在含有Cl~-的模拟混凝土孔隙液中对钢筋的缓蚀作用主要通过抑制钢筋腐蚀的阳极反应。

METHODS HPLC-UV assay was used to analyze chiglitazar concentration in microsomes incubation system.

方法采用高效液相-紫外检测的方法测定肝微粒体孵育液中西格列他钠的浓度,用特异性抑制剂的方法分析化合物的代谢酶,用大鼠肝微粒体体外研究西格列他钠可能的代谢产物和代谢途径。

Any of a group of abundant rock-forming minerals occurring principally in igneous , plutonic, and some metamorphic rocks, and consisting of silicates of aluminum with potassium, sodium, calcium, and, rarely, barium.

&任何一组由大量岩石形成的矿物,主要存在于火成岩、深成岩以及一些变性的岩石中,含有钾、钠、钙及极少的钠的铝硅酸盐,地球的外层地壳中约百分之六十是长石。&

Any of a group of abundant rock-forming minerals occurring principally in igneous, plutonic, and some metamorphic rocks, and consisting of silicate s of aluminum with potassium, sodium, calcium, and, rarely, barium.

&任何一组由大量岩石形成的矿物,主要存在于火成岩、深成岩以及一些变性的岩石中,含有钾、钠、钙及极少的钠的铝硅酸盐,地球的外层地壳中约百分之六十是长石。&

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What would he tell Judith and the children?

他将怎样告诉朱迪丝和孩子们呢?

I this is at that time, the opinion with peacockish true girl is full of in a heart.

这就是当时的我,一个心中布满虚荣的女孩子真实的想法。

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