碘的
- 与 碘的 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Mol/L. 3 A study on the ECL of acridinum esters including 10--acridinium-9-carboxyl-phenyl-ester iodinate and 10-methyl-9-(p-formylphenyl)-acrdiniumfluorosulphonate in neutral solution was carried out. It was found both CACPEI and MFPA give strong ECL in KNO〓 solution when an appropriate voltage was applied on Pt electrode.
本文研究了碘化10-乙羧基吖啶-9-羧酸苯酯和对甲酰基苯基-10-甲基吖啶-9-羧酸酯氟磺酸盐的ECL行为,发现在中性KNO〓介质中,这两种吖啶酯都能在一定的电位下产生很强的ECL信号,考察了各种影响因素,确定了发光的最佳条件,探讨了可能的发光机理。
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The developed catalysts demonstrated good activities towards the Heck reaction of iodobenzene and methyl acrylate with about 90% yield, easy separation after reaction and reusability. The metal leaching was not apparent after four runs.
以碘代苯与丙烯酸甲酯的Heck反应为例,考察双腈基固载Pd的催化性能,肉桂酸甲酯的收率近90%,四次循环使用后催化活性没有明显的降低,Pd的析出并不严重,该催化剂易回收使用。
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The way to prepare iodomethane using methanol, potassium iodine and acid as regents has the disadvantages such as many side reactions and low yield, while the synthesize route from dimethyl sulfate and potassium iodine has the advantages of high yield and simple separation.
醇与氢卤酸作用是制备卤代烃的常用方法,以甲醇为试剂,以碘化钾与酸作用生成氢碘酸制备碘甲烷的方法存在副反应多、收率不高的特点;而以硫酸二甲酯及碘化钾为试剂的合成路线具有操作容易、收率高、纯化简单的优点。
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With the classic iodometric method,this paper can work out the total effective chlorine, the sum of the chlorine and chlorine dioxide in the system.
按通常的碘量法可测定体系的总有效氯(ClO2 +Cl2 );向体系中加入一定量的掩蔽剂二甲亚砜后可有效地掩敝体系中的Cl2 ,进而可测定体系中的ClO2 。
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By adding a few drops of dimethyl sulfoxide to mask the chlorine effectively,the concentration of chlorine dioxide was determined by general iodometric method.
按通常的碘量法可测定体系的总有效氯(ClO2+Cl2);向体系中加入一定量的掩蔽剂二甲亚砜后可有效地掩敝体系中的Cl2,进而可测定体系中的ClO2。
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Fourthly, The preparation of 1 -triazolyl-2-isoxazolinyl substituted-ethenes was developed through an one-pot 1, 3-dipolar cycloaddition of NaN_3 and RI,α-alkylation reaction of substituted allyl bromides and 1, 3-dipolar cycloaddition of nitrile oxidesbased on polystyrene-supported propargyl selenide.
四、从聚苯乙烯负载的炔丙基硒醚出发,通过与叠氮化钠和碘化物的一锅法1,3-偶极环加成反应、取代烯丙基溴的α-烷基化反应和腈氧化物的1,3-偶极环加成反应固相合成了1—三唑—2—异噁唑啉取代的-乙烯。
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In chapter 4, we have described an improved method for the preparation of ethynylferrocene. Ethynylferrocene was prepared in satisfactory yield by reaction of formylferrocene with triphenylphosphine and carbon tetrachloride followed by dehydrohalogenation in the presence of n-BuLi.
第三章中,我们研究了钯催化下碘杂环化合物的羰基化—酰胺化反应、羰基化—酯化反应和与末端炔烃的羰基化交叉偶联反应,为一步合成多官能团化合物开辟了新的途径,同时,得到的这些产物经过进一步官能团转化后,可以成为一些天然产物合成中的重要中间体化合物。
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Methods IO(superscript - subscript 3) was prepared by quantitative oxidation of bromine water, with the excessive bromine removed with formic acid. In the presence of excessive iodide, I(superscript -) would be oxidized by I(superscript - subscript 3) to form 3 times of I(superscript - subscript 3) in mol, displaying maximal absorption at 286nm in ultraviolet zone and a slightly low apex at 345nm.ε286=1.3×10^5 Lmol^(-1)cm^(-1),ε345=8.1×10^4 Lmol^(-1)cm^(-1), with both showing high sensitivity.
利用溴水定量氧化I生成IO(上标-下标 3),再用甲酸除去过量的溴,IO(上标-下标 3)在过量碘化物存在下氧化I产生3倍摩尔量的I(上标-下标 3),在紫外光区的286nm具有最大吸收,并在345nm处另有一略低的吸收峰,ε286=1.3×10^5 Lmol^(-1)cm^(-1),ε345=8.1×10^4 Lmol^(-1)cm^(-1),均具有很高的灵敏度。
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By using the two symmetric absorption peaks of iodine molecules within the frequency range of Brillouin scattering in water, accurate real-time measurement of Brillouin shift in water could be achieved.
利用碘分子在水中的布里渊散射光谱范围内的两个对称的吸收峰,可以对光在水中的布里渊散射频移实现高精度的实时测量。
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According to one long-standing hypothesis, in geographic regions where iodine is naturally low, those carrying the 'sensitive' form of the taste receptor may be at an advantage; avoiding foods containing glucosinolates would allow their thyroids to be healthier.
根据一项长久的假说,在碘含量天然很低的地区,那些携带&敏感型&味觉感受器的人也许处于优势;避开含有硫代葡萄糖苷的食物将使他们的甲状腺能更健康。
- 推荐网络例句
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This one mode pays close attention to network credence foundation of the businessman very much.
这一模式非常关注商人的网络信用基础。
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Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.
扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。
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There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.
双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。