The properties of the polarographic wave and the mechanism of the electrode reaction were studied with diversified electrochemical methods.

在極譜分析體系中，某些具有表面活性的有機試劑在電極表面有很強的吸附性，可以起到去極劑、催化亚洲,无码,乱伦、加速電極過程的作用。

The method comprises heating up the lactic acid solution to gasify at 150-200 degree C, mixing the obtained mixed vapour of lactic acid and water with the carrier gas, entering into gas-solid catalytic reactor to get the reaction product gas by the action of a modified Y zeolite molecular sieve catalytic agent and dewatering after heating up the mixed gas to 200-450 degree C, obtaining the propenoic acid solution through gas-liquid dissociation after cooling the reaction product gas, obtaining coarse propenoic acid products form the propenoic acid solution by gas stripping, azeotropic distillation, extraction and rectification in turns.

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The experimental results showed that the activity of Candida rugosa lipase in the AOT microemulsions system had a typical bell-shaped dependence on the ion concentration.

結果表明小草A片，所研究的堿金屬高清日韩精品更新视频、堿土金屬氯化鹽對該酶反應有作用，具有類似鐘形的曲線久久精品79国产精品；稀土離子對該酶催化反應也存在類似影響。

A series of terpenoids, including sesqui-, di- and tri terpernoids were also observed, which was accounted for D-limonene had influence on the metabolites of marine bacteria.

從南海大亞灣的海洋微生物中篩選出3株對單萜壓D-檸檬烯有顯著生物催化轉化作用的海洋細菌（Vibrio cholerae毛片最新网址、Listonella damsela和Vibrio alginolyticus）欧美性交网址欧美。

A series of mono-, sesqui-, di- and tri-terpenoids with various structural types, which produced by bio- oxidation, hydrogenation, hydrolyzation, esterification and cyclic cleavage toward-limenone, were analyed by GC-MS.

經(jīng)GC-MS分析發(fā)現(xiàn)該兩細菌對-檸檬烯有顯著的生物催化轉化作用，能對底物進行不同程度的氧化欧美牲交A欧美牲交aⅴ一、還原A片黄色免费网站、水解、酯化拍自拍亚洲手机黄色视频在线观看、開環(huán)等反應96sao国产成视频永久免费，并產(chǎn)生豐富的系列結構不同的其它萜類化合物：包括單萜、倍半萜欧美第一页激情视频、二萜亚洲日韩国产黄色片、以及三萜等www.最新黄色视频.com。

Therefore, we characterized the Cyt c P71H/M80V variant protein electrochemically and spectroscopically. All the experimental results showed that the introduced histidine at position 71 did not act as a functional distal-histidine, but most likely coordinated to the heme iron, maybe due to the flexibility of theΩloop segment (resides 70-84) of Cyt c protein.

于是我們對P71H／M80V蛋白性質進行了一系列的研究，結果表明可能是由于Cyt c中Ωloop D肽段(residues 70-84)具有很強的柔韌性日本黄色小视频在线观看，使得His71并沒有象HRP中的distal histidine一樣起到酸堿催化功能欧美黄色精品，而是與heme發(fā)生了配位作用，無論是在氧化態(tài)還是還原態(tài)都成了heme的第六軸向配體在线观看黄视频国产亚洲。

A pair of FRET(frequency resonance energy transfer) donor-acceptor chromophores were simultaneously labeled on immunoglobulin G at varied ratios to prepare the spectroscopically encoded core materials,which were then housed inside a silica shell by the hydrolysis and polycondensation of tetraethoxysilane in water-in-oil microemulsion to synthesize the optically encoded silica nanomaterials.

采用兩種FRET供受體熒光染料按不同的比例與載體材料人免疫球蛋白作用制備熒光編碼的載體材料久久久久久精品人妻网，以熒光編碼的載體材料為內核材料，利用氨水催化硅烷化試劑在反相微乳液中水解包裹內核材料制備成一系列多色光學編碼硅殼納米材料激情美女成人网站大全免费视频。

Ten novel derivatives of 1-phenyl-5-[5-(substituted anilinocarbonylmethylthio)-4-phenyl-1,2,4- triazol-3-ylmethylthio]-tetrazole were synthesized rapidly in high yields by the reaction of N--2-chloryacetanilide (3) with 1-phenyl-5-(5-mercapto-4-phenyl-1,2,4-triazol-3-ylmethylthio)-tetrazo- le (2) under microwave irradiation and phase transfer catalysis conditions.

采用微波和相轉移催化法通過1-苯基-5-(4-苯基-1国产aaaaaaaa网站，2，4-三唑-5-巰基-3-甲硫基)四唑(2)與2-氯乙酰芳胺(3)反應高效天堂AV天堂、快速地合成了10種尚未見文獻報道的1-苯基-5-[5--4-苯基-1欧美视频日韩在线，2，4-三唑-3-甲硫基]四唑欧美成人aⅴ免费。其結構經(jīng)IR69pao国产成永久免费视，1HNMR，13CNMR和元素分析表征欧美va国产va视频。生物活性實驗結果表明二0二二年免费一级片，該類化合物在較低濃度下部分化合物對小麥芽有很好的促進作用

As all know, Cu-NiRs have trimeric structures, in their each monomer, there exist two types of Cu centers that play pivotal roles as the components of electron transfer pathway in the process of catalysis.

Cu-NiRs呈三聚體結構，每個單體都含有兩種類型的銅原子你懂得在线网站，它們在酶催化過程中起著傳遞電子的重要作用亚色91。

Compared with the catalytic behaviors of the reference catalysts, CpTiCl〓 and n-CpTiCl〓, we could identify that the pendant ethereal group played an important role in this selective trimerization process.

將它們的催化性能與CpTiCl〓、n-CpTiCl〓比較国产拍线一区观看，可以確定亚洲美女黄色，氧對鈦活性中心的配位對乙烯三聚反應起重要作用。