查询词典 Potassium

The method is characterized in that: mixture of macromolecular dihydric alcohol and a dihydroxybutyl-terminated polydimethylsiloxane is dehydrated, added with diisocyanate for reaction, then added with a bis propionic acid, a dihydric alcohol chain extender and a catalyst - dibutyl tin laurate, and is diluted by acrylic ester; temperature reduction and emulsion are performed on the mixture after reaction; chain extension reaction is performed in water by a multi-amine chain extender, and siloxane modified polyurethane dispersoid which contains acrylic ester monomer is prepared; and an initiator - potassium persulphate is added into the siloxane modified polyurethane dispersoid for emulsion polymerization.

特征是先将大分子二元醇与二端羟丁基聚二甲基硅氧烷的混合液脱水后加入二异氰酸酯，反应后加入二羟甲基丙酸、二元醇扩链剂和催化剂二月桂酸二丁基锡，并用丙烯酸酯进行稀释，反应后降温乳化，用多元胺扩链剂在水中进行扩链反应，得到含有丙烯酸酯单体的硅氧烷改性聚氨酯分散体，然后再通过加入引发剂过硫酸钾进行乳液聚合。

A copolymer emulsion used for air filter paper impregnation was studied, the emulsion was prepared by copolymerization of styrence/bulyl acryl ate and oxidized starch using sodium bisulphate/potassium per sulfate as initiator and sodium doddery sulfate as emulsifier.

摘 要：采用半连续乳液聚合的方法，以亚硫酸氢钠-过硫酸钾为引发剂，十二烷基硫酸钠为乳化剂，合成了一种以氧化淀粉、苯乙烯和丙烯酸丁酯为主要原料的空气滤清器滤纸浸渍乳液。

An improved simple method for carbon-carbon double bond cleavage by silica-supported potassium permanganate was described and a possible mechanism was proposed.

在无有机溶剂做介质的条件下，用硅胶吸附的高锰酸钾氧化6种难溶于水的液态烯烃，得到了双键发生断裂的氧化产物。

Results: By using SMI for 2 weeks, patientsleft ventricular ejective fractioncould be increased from 29.5±9.0 to 36.6±10.2 (P＜0.05), the heart function of 68.75%patients was improved, no side effects or toxicity was observed. Potassium magnesium aspartate could improve heart function in 37.50%patients only but with no effect on LVEF.

结果：应用参麦注射液2周后，左室射血分数由29.5±9.0升至36.6±10.2(P＜0.05)，68.75%的患者心功能改善，未发现明显毒副作用；门冬氨酸钾镁可使37.50%的患者心功能改善，但左室射血分数无明显变化。

Potassium bromide crystal s were effectively colored electrolytically with a lab-made electrolytic apparatus at 693 K by a DC 1 200 V voltage.

用自行研制的电注入装置，在693K温度下施加DC1200V电压、对溴化钾晶体进行电注入并使之有效着色。

NKCC1 channel plays a critical role in potassium homeostasis of endolymph in the inner ear.

NKCC1离子通道在内耳K+循环和维系内耳正常听觉平衡功能中起重要作用。

Stria vascularis of the cochlea generates the endocochlear potential and secretes potassium into endolymph.

研究目的：血管纹产生耳蜗电位向耳蜗内淋巴分泌钾离子。

NKCCl(superscript -/-) mice were deaf and demonstrated difficulties in maintaining their balance. NKCC1 mice exhibited a marked atrophy of the stria vascularis, contraction of the endolymphatic compartments and collapse. CONCLUSION: NKCCl channel plays a critical role in potassium homeostasis of endolymph in the inner car.

光镜下NKCCl野生型小鼠和NKCCl杂合子小鼠的耳蜗解剖结构无明显异常；NKCCl突变纯合子小鼠的耳蜗出现前庭膜塌陷、内淋巴腔缩小而致中阶完全消失，并有血管纹萎缩、Corti器缺失、螺旋神经节萎缩；且球囊和椭圆囊膜迷路失去正常结构并出现塌陷等病理改变。

Nitrogen, phosphorus and potassium absorption in ensilage maiz.

青贮玉米对氮磷钾的吸收规律，作物学报， 2006，

The interaction mode among major genes is overlap effect or is dominant epigyny, the result of interaction enhance low-potassium tolerance.

主效基因和微效多基因降低玉米的耐低钾能力，主效基因间的互作方式为重叠作用或显性上位性，互作结果增加耐性。

If I didn't care what anyone thought, I would.....

如果我不介意别人怎么看，我会。。。。

In recent decades, Chile has mandated earthquake-proofing for new structures, requiring that materials like rubber and features like counterweights be built into the architectural designs to allow buildings to bend and sway during temblors rather than break.

在最近数十年里，智利已经为兴建防震的新土建结构而对建筑材料提出要求，需要的材料类似于橡胶，而特性就象运用在建筑设计中的平衡物体，一旦应用以后，当地震发生时建筑就能弯曲摇摆。