查询词典 potassium amide

With the improving of potassium and phosphoresce, the tendency of biological resolving was lower.

说明施入过量的钾矿粉，容易造成钾胁迫，抑制钾细菌的繁殖和矿化。

Potassium phthalimide reacted with 2-chloroethanol under 90?℃ or 12?h in DMF solvent, and the isolation yield was about 86%.

以DMF为溶剂，邻苯二甲酰亚胺钾盐与氯乙醇在90℃下反应12h，N (2 羟乙基)邻苯二甲酰亚胺的收率为86%。

Afterwards, N-(6-chloro-3-pyridinemethyl) phthalimide is prepared by using potassium phthalimide, as nucleophilic reagent, condensation reacting with 2-chloro-5-methylpyridine at a temperature of 70℃.

然后在70℃条件下，以邻苯二甲酸亚胺钾作为亲核试剂，与2-氯－5-氯甲基吡啶发生缩合反应，制备了N-（6-氯－3-吡啶甲基）邻苯二甲酰亚胺。

Amino-monomethoxypoly(ethy1ene glycol)(mPEG-NH2) was synthesized based on the principle of Gabriel synthesis.Monomethoxypoly(ethy1ene glycol) tosylate was prepared at first,and then reaction with potassium salt of phthalimide as nucleophile to produce the monomethoxypoly(ethy1ene glycol)phthalimide derivative.

摘 要：首先合成了单甲氧基聚乙二醇对甲苯磺酸酯，然后根据盖布瑞尔合成法原理，以邻苯二甲酰亚胺钾盐为亲核试剂与mPEG-OTs反应，生成单甲氧基聚乙二醇的邻苯二甲酰亚胺衍生物，mPEG-PI与水合肼反应肼解生成伯胺，合成了一端为氨基的单甲氧基聚乙二醇(mPEG-NH2)。

The synthetic route starts from penicillin G, peroxyacetic acid(8.5%) as Oxidizing Agent to get penicillin G sulfoxide; esterifided with p-nitrobenzyl bromine to synthesize penicillin G sulfoxide ester; we synthesize 3-exomethylenecepham sulfoxide ester with phthalimide potassium and 4A molecular sieve as acid scavenger to open the ring, SnCl_4 as catalyzation to close the ring. The yield is over 60%.

本研究采用的合成路线为：以青霉素G钾盐为原料，选用工业过氧化氢制备的过氧乙酸(22.3%)稀释至8.5%为氧化剂，氧化得青霉素亚砜；采用对硝基溴苄为酯化试剂，制备青霉素亚砜酯；以NCP(N-氯代邻苯二甲酰亚胺)为开环试剂，酞酰亚胺钾和4A型分子筛为酸清除剂，顺利开环；再经无水SnCl_4催化闭环得3-环外亚甲基头孢亚砜酯，最终产率在60%以上。

Vegetation restoration also resulted in the changes of soil physicochemistry properties including the significant increase in contents of organic matter, total nitrogen, available potassium, fine sand, very fine sand and clay, and the decrease in available nitrogen, phosphorus.

植被的恢复使土壤理化性质发生了变化，与封育前相比土壤中有机质、全N、速效K以及细砂、特别细砂和粘粒含量显著增加；速效N、速效P降低。

And when picene (C22H14) is doped with potassium, it superconducts at a relatively toasty 18 kelvins ( 255 degrees C).

日本冈山大学研究固态化学和物理学的丸·独子教授参与了此项研究，他说苉是世界上第一种烃类超导体。

The finding comes from a team of Japanese researchers, who report in the March 4 issue of Nature that the hydrocarbon molecule picene, ordinarily a semiconductor, becomes a potential superconductor when interspersed with an alkali metal such as potassium or rubidium.

这项发现来自于日本研究人员。他们在3月4日《自然》杂志上撰文称，一种叫苉的烃类原本是半导体，但在其中扩散过碱金属后就会变成超导体。扩散钾以后，这种材料的临界温度是相对&暖和&的18K（-255℃）。

Retina; ganglion cell layer; inner plexiform layer; chloride currents; glycine receptors; potassium conductance calcium-gated

视网膜；神经节细胞层；内网织层；氯电流；甘氨酸受体；钾电导钙-开启

XRD characterization shows that with the increase of potassium content, polymolybdate species depolymerizes progressively, leading to the formation of K2MoO4 species.

XRD表征结果显示，随着元素K的加入，多钼物种逐渐被破坏，最终形成了单钼的K2MoO4物种。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。