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In order to meet the analysis requirement, this article has introduced the main technological method and concrete application of the independently developed isotope X fluorogenic analysis instrument. The practical application effect indicated this analyzer when carries on the on-line survey to industry coating and automobile coating thickness its measuring accuracy may reach 2%~4%.

众所周知,产品和金属元件表面镀层或防腐层厚度是与产品质量与性能相关的重要指标,为满足分析要求,采用自行研制的同位素X射线荧光分析仪,对工艺铁基镀锌、铁基镀镉和汽车涂层3类样品以美国NBS系列标准为参照,采用发射法和吸收法进行了应用实验,并对在线镀锌板生产线进行了实验。

The behaviors of supramolecular self-assembly of cabboxyl porphyrin-anthraquinone systems, carboxyl porphyrin zinc-copper systems, porphyrinatozinc-imidazolyl tailed porphyrinatomanganese systems, porphyrinatozinc-anthraquinone hybrids/imidazolyl tailed porphyrinatomanganese systems and porphyrinatozinc-fluorescein hybrids/imidazolyl tailed porphyrinatomanganese systems driven by hydrogen-bonding or coordination-bonding have been studied.

设计、合成了多种新型羧基卟啉、卟啉-蒽醌二元化合物和卟啉-荧光素二元化合物,研究了氢键或配位键驱动的羧基卟啉-蒽醌、羧基卟啉锌-羧基卟啉铜、锌卟啉-咪唑基尾式卟啉锰二元超分子,卟啉-蒽醌二元化合物与咪唑基尾式卟啉锰三元超分子的构建和光诱导电子转移性质。

The objections of this study are to determine the effects of the different levels of Zinc-Methionine supplemented on on lactational performance and reproductive performance in dairy cows,and find out the suitable does.

本试验旨在研究蛋氨酸锌对奶牛泌乳性能及繁殖性能的影响,并筛选出奶牛日粮中适宜的蛋氨酸锌添加剂量。

Mineral resources are rich in minerals have been found 48 species, have developed the use of 24, mainly iron, gold, lead, zinc, fluorite, perlite, bentonite, mineral water, etc. Among them, zinc, fluorite's Hebei province ranks the forefront of storage, strontium series, metasilicate series of huge reserves of mineral water.

矿产资源丰富,已经发现的矿种有48种,已开发利用24种,主要有铁、金、铅、锌、莹石、珍珠岩、膨润土、矿泉水等,其中,锌、莹石的贮藏量居河北省前列,锶系列、偏硅酸系列矿泉水储量巨大。

That 1,4-addition reactions of Grignard agent made from 1-bromo-3-triphenylmethoxyl-1-octene and organozinc agent made from 1-iodo-3-trimethysiloxy-1-octene with 2-(6-methoxylcarbonylhexyl)-4-(2- tetrahydro-pyranyloxy)-2-cyclopentenone both gave prostaglandin 〓 methyl ester statethat prostaglandin E compounds can be prepared by 1,4-addition reaction oforganozinc agent.

最后,研究了溴化-3-三苯甲氧基-1-辛烯基镁和碘化-3-三甲硅氧基-1-辛烯基锌与2-(6-甲氧羰己基)-4-(2-四氢吡喃氧基)-2-环戊烯酮通过1,4-加成反应合成〓甲酯的方法,结果表明,用有机锌试剂通过1,4-加成反应来合成PGE类化合物是可行的。

Effects of oxidization conditions of zinc vapor at high temperature on the crystal morphologies of ZnO and morphology change laws are investigated.

实验研究了锌蒸气高温气相氧化条件对氧化锌结晶形貌的影响以及形貌变化的规律。

Through the analysis of the alloy electroplating solution in gradients, the process variables and their relationship between content of manganese in the alloy coating, the optimum process has been obtained, the additive to improve the cathode current efficiency was found; it was found that the deposits with a manganese content 40~60% exhibit excellent corrosion resistance; the corrosion resistance of zinc-manganese alloy coating will be even better after"phosphated"and passivated.

研究发现Na〓SeO〓能显著提高锌锰合金电沉积电流效率。首次用循环伏安法、恒电势电解法、恒电流阶跃法研究了Na〓SeO〓提高电流效率的作用机理。研究发现Na〓SeO〓在锌锰共沉积的条件下在阴极是分两步还原,即:首先在-0.9V处被还原为单质硒,然后在-1.25V处被还原为多硒阴离子。证明了多硒和多硒阴离子都在阴极存在特性吸附

On the basic of visual index and proportion of the eggs with eggwhite sticking shell and rotten heed, the stability of the pidan made by utilizing zine, copper,zine-copper mixture and nucleus material of pidan pickle agent was compared.

采用GB9694 -88标准比较了用锌法、铜法、铜锌合剂法、皮蛋腌制剂核心料法生产皮蛋的稳定性,以及皮蛋腌制剂核心料在不同季节,不同添加量按感观指标和粘壳、融头蛋产生的比例检验其稳定性。

It was showed that the nanoparticle ZnO may shorten the sulfurization time and improve mechanics performance of the rubber.

结果表明,和普通氧化锌在同等用量时,纳米氧化锌可以缩短胶料的硫化时间,提高胶料的力学性能。

The main objective of this paper is to use Cu,Zn,Cd and oxytetracycline, norfloxacin as experimental toxicants and Cyprinus carpio,Carassius auratus Pengzenensis, Trionyx sinensis as as experimental creature, studied the toxicity of copper,zinc,cadmium to the larval carps; accumulations of copper,zinc in the larval carps.

本研究以三种重金属和土霉素、诺氟沙星为实验毒物,以鲤、彭泽鲫和中华鳖为实验动物,研究了铜、锌、镉三种重金属对鲤幼鱼的毒性作用,以及铜、锌在鲤幼鱼中的积累。

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