- 更多网络例句与碘相关的网络例句 [注:此内容来源于网络,仅供参考]
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However, the mechanism underlying the effect ofiodine excess on thyroid function remains unknown in part. Moreover, differentanimals show different ability to respond to iodine deficiency and iodine excess.Therefore, it is of great necessary to establish different animal models in vitro andtake a thorough evaluation of the impact of iodine intakes on thyroid function and itspossible regulation mechanism.
迄今的研究多集中于碘摄入水平与甲功关系这一现象的观察,对碘与甲状腺功能变化的剂量-效应关系及其具体调控机制的实验论证尚有待于进一步深入,且不同动物对碘缺乏与碘过量的反应性和耐受性有所不同,因此有必要建立不同的动物模型,就碘对甲状腺功能的影响及其可能的调控机制做系统而深入的研究。
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In addition to iodide and iodate, another iodine compound could be separated and detected in certain samples with high total iodine concentrations and was identified as elemental iodine, probably in form of triiodide, by peak matching.
在碘化合物总浓度很高的特定样品中,除了碘化物和碘酸盐,其他的碘化合物也可以被分离和检测,其通过峰匹配以三碘化物形式被做为元素碘检出。
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In chapter four, the preperation of ytterbium diiodide was examined. The reductive cleavage of Se-Se bond and S-S bond induced by ytterbium diiodide was investigated. The reaction of diselenides and disulfides with allylic bromide promoted by ytterbium diiodide was also examined. The intermolecular Barbier-type reaction induced by ytterbium diiodide was studied. In the last section of this chapter, the intermolecular reductive coupling of nitriles with azides induced by samarium diiodide was investigated.
第四章,研究了二碘化镱的制备方法,以及二碘化镱作为一种优良的单电子转移试剂在有机合成中的应用:二硒醚的Se--Se键和二硫醚S-S键的还原断裂,及其在合成烯丙基硒醚,硒代酯和烯丙基硫醚,硫代酯中的应用,实验结果表明二碘化镱也能促进分子间的Barbier反应,而文献认为二碘化镱不能促进分子间的Barbier反应;最后研究了二碘化钐促进的叠氮化合物与腈的交叉还原偶联反应,一步高收率地制备脒的方法。
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The iodination of fluorinated ylide-anions using element iodine or 1,2-diiodoethane wassuccessfully underwent and a series of of perfluoroalkylated α-iodo-α,β-unbsaturated nitriles were prepared.
成功地进行了含氟叶立德阴离子的碘化反应,通过用不同的碘化试剂即单质碘或〓, 2-二碘乙烷制备了一系列全氟烷基化的α—碘代—α,β-不饱和腈。
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Objective To study the amount of iodine intake and its affecting factors in Guangzhou elderly population after the implementation of universal salt iodization.
文章摘要:目的分析实施全民食盐加碘后广州市50岁以上居民尿碘与碘摄入、量的关系及影响因素b方法横断面调查广州市50岁以上居民尿碘水平,分析尿碘与某些人口特征因素的相关性。
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About tetra-n-butyl ammonium polyiodides: triiodide and pentaiodide anions are the basic building blocks; heptaiodide anion and undecaiodide anion are composed by triiodide anion, and nonaiodide anion is composed by pentaiodide anion. Therefore the character of triiodide, heptaiodide and undecaiodide polyiodides is similar, and that of pentaiodide and nonaiodide polyiodides is similar.
正四丁基多碘化铵化合物中:碘三离子和碘五离子是基本的结构单元,碘七离子和碘十一离子是由碘三离子构成的,碘九离子是由碘五离子构成的,所以碘三、碘七和碘十一形式的高聚碘具有相似的性质,碘五和碘九形式的高聚碘具有相似的性质。
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The following conclusions have been gotten from a large amount of experiments and determinations: Triiodide, pentaiodide, heptaiodide, nonaiodide, undecaiodide of solid tetra-n-butyl ammonium polyiodides and tetrabutyl ammonium bromide polyiodides can be synthesized by solid phase process which is a economic easy way, while its not suitable for synthesizing solid tetramethyl ammonium polyiodides; Solution polyiodides of triiodide, pentaiodide can be synthesized through the complexation process, and TX-10 is a better complexing agent; Triiodide, pentaiodide, heptaiodide resinic polyiodides were synthesized by ion-exchange of resinifying process, and that is a viable easy way.
在大量实验和分析的基础上,可得到以下结论:用固相法可以合成出碘三、碘五、碘七、碘九和碘十一形式的正四丁基多碘化铵固体高聚碘和四丁基多碘化溴化铵固体高聚碘系列化合物,是制备高聚碘的经济、方便的合成方法,但此法对合成四甲基多碘化铵固体高聚碘系列化合物并不适用;TX-10是合成溶液高聚碘较佳的络合剂,通过其络合作用可以合成出碘三和碘五形式的溶液高聚碘;采用树脂法,通过离子交换,合成出了碘三、碘五和碘七形式的树脂高聚碘,此法简单可行。
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The electric conductivity of solid polyiodides increases largely as the aggrandizement of polyiodide anions"polymerization degree. The solid polyiodides have excellent sterilizing effects and the effect of tetra-n-butyl ammonium undecaiodide is the best of them, and the sterilizing effects increase as the aggrandizement of polyiodide anions" polymerization degree. The sterilizing effects of resinic polyiodides increase as the aggrandizement of polyiodide anions polymerization degree, the heptaiodide resinic polyiodide has better sterilizing effects than the triiodide and pentaiodide.
固体高聚碘系列化合物的电导率随着高聚碘阴离子聚合度的增加而增加,并且增幅较大;固体高聚碘对常见细菌均具有很好的杀灭作用,并且随着高聚碘阴离子聚合度的增加,杀菌能力也随着增强,其中正四丁基十一碘化铵杀菌剂的效果最佳;树脂高聚碘随着高聚碘阴离子聚合度的增加,杀菌能力增强,碘七树脂高聚碘的杀菌效果要明显好于碘三树脂和碘五树脂高聚碘。
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In solid phase process, the polyiodides, which include triiodide, pentaiodide, heptaiodide, nonaiodide and undecaiodide tetra-n-butyl ammonium iodide, tetrabutyl ammonium bromide and tetramethyl ammonium iodide poly-compounds, were synthesized by the low-heat solid phase reaction between iodine and tetra-n-butyl ammonium iodide, tetrabutyl ammonium bromide or tetramethyl ammonium iodide; In complexation process, solution polyiodides were synthesized by complexing action of different agents; In resinifying process, triiodide, pentaiodide, heptaiodide resinic polyiodides were synthesized by ion-exchange when the strong basicity styrene anion exchange resin, potassium iodide and iodine were used as raw materials.
固相法是用正四丁基碘化铵、四丁基溴化铵或四甲基碘化铵分别与碘作用,通过低热固相反应,合成出碘三、碘五、碘七、碘九和碘十一形式的正四丁基碘化铵、四丁基溴化铵或四甲基碘化铵的系列高聚碘化合物;在络合法合成溶液高聚碘的实验中,选用几种络合剂通过络合作用首次合成了溶液高聚碘;树脂法合成高聚碘的实验是采用强碱性苯乙烯系阴离子交换树脂、碘化钾和碘为原料,通过离子交换,合成了碘三、碘五和碘七形式的树脂高聚碘。
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Comparing with the result of methyl iodide in intense laser field, some differences are observed:(1) at the same laser field intensity, the highest charged fragment ion of methyl bromide was Br(superscript 3+), lower than I(superscript 6+) of methyl iodide;(2) the dehydrogenation channel was observed in the multiphoton dissociation or Coulomb explosion of methyl bromide, but was not observed in the case of methyl iodide;(3) HBr(superscript +) was observed, but there was no similar channel in the case of methyl iodide;(4) for methyl bromide, the valid charge distance of Coulomb explosion increases with the product of p and q; while in the case of methyl iodide, the distance remained almost the same;(5) the producing channel of CH(superscript + subscript m)(m=0, 1, 2) is different from the ionization-dissociation of methyl iodide in which the stepwise dissociation of CH3(superscript +) was thought to be the main channel, CH(superscript + subscript m)(m=0, 1, 2) of methyl bromide are mainly from the products of the direct dissociation of the dehydrogenated parent ions instead of the stepwise dissociation of CH3(superscript +).
与碘甲烷在强场中的实验结果对比发现:(1)在相同的激光场强下,碘甲烷电离解离的最高价碎片离子为I(上标 6+)而溴甲烷为Br(上标 3+);(2)溴甲烷质谱中存在母体离子的脱氢产物CHBr和CHBr(上标 2+),而对于碘甲烷,没有检测到这些通道,C-I键首先断开;(3)质谱中存在H^79Br和H^81Br,而碘甲烷的电离解离中不存在HI产物;(4)溴甲烷库仑两体爆炸的有效电荷间距随着两碎片电荷乘积的增大而增大,而对于碘甲烷此间距几乎不随电荷乘积变化;(5)CH(m=0, 1, 2)的主要生成通道可能与碘甲烷不同,不是来自CH3的顺序脱氢,而是来自脱氢母体离子的直接解离。
- 更多网络解释与碘相关的网络解释 [注:此内容来源于网络,仅供参考]
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iodine number:碘價,碘值
碘滴定 iodimetry | 碘价,碘值 iodine number | 碘化反应 iodine reaction
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iodine value:碘价,碘值
iodine uptake rate 吸碘率 | iodine value 碘价,碘值 | iodine yellow 碘黄粉
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iodine value:碘值,碘价
iodine number | 碘价 | iodine value | 碘值,碘价 | iodized oil | 碘化油
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iodize:加碘;碘化
iodization碘化作用 | iodize加碘;碘化 | iodizedstarch碘化淀粉
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iodize:用碘处理/使含有碘
iodism /碘中毒/ | iodize /用碘处理/使含有碘/ | iodoacetone /碘丙酮/
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iodobenzene:碘苯
另外本公司还可以提供其他规格的纯品型和溶液型的碘苯(Iodobenzene). 仪器信息网上的碘苯(Iodobenzene)报价和型号规格为参考报价和型号规格,如需购买碘苯(Iodobenzene)请来信来电咨询,碘苯(Iodobenzene)的报价以相关业务员给您提供的报价和型号规格为准. 如果您对碘苯(Iodobenzene)的使用有任何问题
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iodoethane:碘乙烷 乙基碘
iodoeosintest 碘曙红试验 | iodoethane 碘乙烷 乙基碘 | iodoethanol 碘乙醇
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iodoethane; ethyl iodide:碘乙烷;碘化乙基
碘环己烷 iodocyclohexane | 碘乙烷;碘化乙基 iodoethane; ethyl iodide | 碘仿;三碘甲烷 iodoform; triiodomethane
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thallous iodide:碘化亚铊,碘化铊,一碘化铊
thallous hydroxide 氢氧化铊 | thallous iodide 碘化亚铊,碘化铊,一碘化铊 | thallous oxide 一氧化二铊,一氧化铊
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iodized salt:碘化食盐,碘化盐
iodized poppy-seed oil ==> 碘化罂粟油 | iodized salt ==> 碘化食盐,碘化盐 | iodized starch ==> 碘化淀粉