二分子的
- 与 二分子的 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The kinds of compounds with AIE, AIEE and CIEE are summarized, mainly including siloles, substituted ethenes (mainly including fulvene and DPDSB style), CN-MBE, pyran, biphenyl compounds and polymers.
侧重总结了silole型、取代乙烯型(主要包括亚甲基环戊二烯型和DPDSB型)、腈取代二苯乙烯型、吡喃型、联苯型等小分子化合物和少数高分子的结构与AIE性质之间的关系,以及为解释AIE现象所提出的限制分子内的转动、避免非辐射去活、构象扭曲避免形成excimer、J-聚集态以及形成分子间的C-H/π键等理论。
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It is shown that the methanol dimer and methanol cluster are the predominant species of methanol in gaseousness. So we believe that rather the methanol dimer is the original reactant of the methanol dehydration reaction to dimethyl ether than the mono-methanol.
研究表明,在气相中,甲醇分子主要以二聚体和多聚体的形式存在,据此提出甲醇脱水反应的原始反应物是甲醇二聚体,而不是单个甲醇分子。
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The monosaccharides in LBP-4 identified by GC were xylose , galactose , mannose , Rhamnose , glucose and arabinose with the molar ratio of 4. 45: 1. 20: 1. 0: 0.98: 0.90: 0.85. The content of calcium, magnesium, zinc and iron in LBP-4a were 127. 9070mg·g〓, 32. 3953mg·g〓, 0.3845mg·g〓 and 0.2930mg·g〓, respectively. The content of galacturnic acid in LBP-4a was 55. 45% while the content of protein is 3. 80%. According to IR spectra, it contains -COOH group,-NH- roup,-OH group,-NH〓 group and β-D-glucose. The backbone of sugar residues chain in LBP-4a were contained 1→6 indican bond according to periodate oxidation and the results of β-elimination reaction indicated that the chain of polysaccharides and protein were connected by O-linked chemical bond. The photograph of LBP-4a got by laser scanning confocal microscope and scanning electron microscope showed that the LBP-4a combined both with each other and with itself in its crystalloid. The crystalloid was flake and anisotropic.
由LBP-4a的红外光谱图知:LBP-4a中含有-COOH、-OH和-NH〓或-NH-基团,糖链中含有β-D-吡喃葡萄糖;高碘酸氧化实验知LBP-4a糖链中不具有连二羟基和连三羟基结构的单糖残基:具有连二羟基结构的单糖残基:具有连三羟基结构的单糖残基=57.0:16.2:1,六碳糖残基的连接中含有1→6连接的糖苷键;通过β消去反应证明LBP-4a中多糖链和氨基酸间为-O-型连接;由激光扫描共聚焦显微镜和扫描电镜对LBP-4a结晶观察结果推测:LBP-4a结晶中同时存在分子间和分子内结合的现象,LBP-4a分子相互结合时,并不是无规则的相互缠绕形成无规线团结构,而是形成片层结构,并且LBP-4a结晶可能具有各向异性的性质。
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Each of them exhibited sensitive reduction responses of nitryls. It was found that the reduction peak of nitryl of the position 4-nitrate group of 2,4-dinitrophenol showed great difference from that of the position 5-nitrate group of 2,5-dinitrophenol. The difference between the two reduction potentials was as large as 180 mV.
在pH=5.0、0.1mol/LNaAc-HAc缓冲体系中,2,4-二硝基苯酚和2,5-二硝基苯酚在碳纳米管修饰电极上出现灵敏的硝基还原峰,其中2,4-二硝基苯酚分子中四位硝基的还原峰和2,5-二硝基苯酚分子中五位硝基的还原峰显示出明显差异,二者峰电位差达180mV。
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For example, there is only local cooperative organization between polymer segments of atactic poly in the middle-sized solvent poly with molecular weight 200g/mol (PEG200). But for the stereo-regular isotactic polystyrene, pronounced content of 3〓 helix can be found in its middle-sized solvents.
例如,无规聚甲基丙烯酸甲酯在聚乙二醇(分子量为400)中分子溶剂中表现为链段的局部协同组织,而等规聚苯乙烯在邻苯二甲酸二辛酯、氯代十四烷等中分子溶剂中则出现相当含量的3〓螺旋构象。
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OH radicals produced by ultrasound in aqueous solution attack phenolic cycle at adjacent or para position of the hydroxyl on phenol so that phenol is changed into small organic molecules such as muconic acid, maleic acid and ethane diacid. These small organic molecules will be oxidized to form carbon dioxide and water by.
苯酚超声降解的作用机理是,超声空化在水溶液中产生的·OH自由基进攻苯酚苯环上羟基的邻位或对位而使苯环断裂生成己二烯酸、顺式丁烯二酸和乙二酸小分子有机物而使苯酚得以降解,这些小分子有机物在·OH自由基的进一步作用下最终被氧化成CO〓和H〓O。
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A molecularly imprinted solid phase extractant, particularly for the recognition of diphenylguanidine was prepared using diphenylguanidine as the template and bulk polymerization.
以二苯胍为模板分子,用本体聚合法合成了对二苯胍具有良好识别能力的分子印迹固相萃取剂。
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AtDFA is dihydrofolate synthase localized in mitochondria, it catalyzes one glutamate added to the dihydropteroate and produces dihydrofolat. AtDFB, AtDFC and AtDFD are folylpolyglutamate synthase localized in plastid, mitochondria and cytosol respectively. A short chain ofγ-linked glutamates can be added by FPGS.Folate molecules exist in vivo mainly as polyglutamates and these are preferred by folate-dependent enzymes.
AtDFA为二氢叶酸合成酶(dihydrofolate synthase,DHFS),定位于线粒体,在它的催化作用下,一个谷氨酸分子与二氢蝶酸(dihydropteroate , DHP)相结合,形成二氢叶酸;AtDFB、AtDFC、AtDFD为多聚谷氨酸合成酶(folylpolyglutamate synthase,FPGS),分别定位于质体、线粒体和细胞质,在多聚谷氨酸合成酶的作用下,谷氨酸分子可以逐一连接到四氢叶酸的谷氨酸γ位。
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By using lysozyme, RNase A and protein disulfide isomerase as model proteins, we present a hypothesis that protein cross-linking can be accomplished in three concerted steps:(1) a change in protein conformation;(2) formation of interchain disulfide bonds; and (3) formation of interchain isopeptide cross-links.
我们以溶菌酶、核糖核酸酶A和蛋白质二硫键异构酶为模型对异肽键进行了体外详细的研究,提出了解释异肽键形成机理的假说:1蛋白质发生构象变化包括二级结构的改变;2蛋白质形成分子间二硫键:3二硫键的形成帮助蛋白质形成了分子间异肽键。
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Therefore, the EL spectra of (Znq_2)_4 is wider than that of Znq_2. 4._2 was synthesized. The analysis of molecular spatial structure and the characterization of material performance of_2 and Liq showed that two Liq molecules and two Naq molecules were connected by Na-O-Na bond bridges to form_2. Compared with Liq,_2 exhibits stronger rigidity in planar molecular structure, larger steric hindrance and intermolecular distance, and much smaller molecular polarity, thus resulting in much longer fluorescence lifetime, much higher fluorescence quantum efficiency, wider energy bandgap and better film formability. When used as light-emitting layer in OLED,_2 shows lower formation probability of excited dimmer and exciplex formation than Liq, thus emits bluer light with higher current efficiency than Liq. When_2 ultrathin film is used as electron injection layer in OLED, it exhibits higher current density, higher luminance, lower turn-on voltage and higher current efficiency than Liq ultrathin film for the existence of sodium ions in_2 ultrathin film. 5. The summarization the relationship between molecular spatial structure and material performance of Alq_3,(Znq_2) and Liq, lead the conclusion that the molecular spatial structure of Mq_n affects its material performance in such aspects as the rigidity of planar molecular structure, intermolecular interaction, molecule stacking mode and intermolecular distance.
制备了_2,通过对_2和Liq的分子空间结构与性能进行分析与讨论,发现_2是通过两个Na-O-Na键桥将两个Liq和两个Naq连接构成的,其分子平面结构的刚性程度强于Liq,空间位阻大于Liq,分子之间的距离大于Liq,分子极性远远小于Liq;_2的荧光寿命长于Liq,荧光量子效率高于Liq,成膜性优于Liq;_2的禁带宽度比Liq大,光致发光光谱中_2的最大发射峰较Liq发生蓝移;当_2在OLED中作为发光层时,激发二聚体与激基复合物的生成几率远远小于Liq,发的光比Liq更蓝,电流效率大于Liq;_2超薄膜中有Na离子的存在,与Liq超薄膜相比,当其在OLED中作为电子注入层时,具有更大的电流密度,更高的发光强度,更低的阈值电压和更高的电流效率 5、对上述Alq_3、Znq_2和Liq的分子空间结构与材料性能之间的关系进行了归纳总结,认为Mq_n的分子空间结构主要在分子平面结构的刚性程度,相邻分子之间的相互作用,分子堆叠的方式和分子之间的距离这四个方面影响其性能。
- 推荐网络例句
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But we don't care about Battlegrounds.
但我们并不在乎沙场中的显露。
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Ah! don't mention it, the butcher's shop is a horror.
啊!不用提了。提到肉,真是糟透了。
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Tristan, I have nowhere to send this letter and no reason to believe you wish to receive it.
Tristan ,我不知道把这信寄到哪里,也不知道你是否想收到它。