过氧化氢
- 更多网络例句与过氧化氢相关的网络例句 [注：此内容来源于网络，仅供参考]
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Based on the analyses of the chemical and the physical characteristics of hydrogen peroxide, the effect mechanism of H2O2 additive on diesel combustion was put forward and proved by the heat release rate of the single-cylinder engine test. The experimental results on 135 diesel engine bench show that H2O2 additive is effective to improve diesel combustion, and the specific fuel consumption, particulate matter and NO are decreased obviously.
对过氧化氢的化学及物理特性进行了分析，建立了过氧化氢组液影响内燃机燃烧过程的机理模型，并且通过放热规律进行了试验验证。135单缸机的试验结果表明，过氧化氢组液的效果相当显著，可以同时降低油耗以及碳烟和NO的排放。
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The results show that the decalescence of catalyst bed affects the process of hydrogen peroxide catalytic decomposition greatly. If the catalyst bed is preheated or made up of materials with low thermal conductivity, that influence can be depressed. At the same time, the response characteristic of catalyst bed and the efficiency of catalytic decomposition can be improved. The low frequency pressure instability of catalyst bed occurs because of the coupling of catalytic decomposition and supplying. The decomposition plane pushes all the way through the catalyst bed during pressure oscillations, causing unreacted liquid hydrogen peroxide to be exhausted from the bed and leading to the appearance of liquid hydrogen peroxide channeling. Consequently, how to prevent or at least limit this channeling is the key to eliminate the pressure instability of catalyst bed. It was found that adding clapboard to the catalyst bed can depress the pressure instability efficiently.
结果表明催化剂床及催化剂的吸热对过氧化氢分解过程影响很大，对催化剂床进行预热或采用热导率低的材料制造催化剂床等措施，可以降低催化剂床壁面吸热对催化分解过程的影响，提高催化剂床的响应特性和催化分解效率；催化剂床的低频不稳定是催化分解过程与供应系统耦合产生的，催化剂床气体界面的波动过程中，液体过氧化氢穿透催化剂床形成过氧化氢液体通道，过氧化氢液体通道的产生和扩大是催化剂床不稳定的主要原因，也是消除催化剂床不稳定的关键，试验中在催化剂床内加入分流板成功地抑制了催化剂床的低频不稳定。
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It is the fact that three methionines distributed in the Hsp16.3 will begradually oxidated, in vitro, by hydrogen peroxide(H2O2). When the hsp16. 3 gene was cloned with pMV261 plasmid vector and transfected into Mycobacterium smegmatis, we found that the ability of anti-H2O2 will be decreased greatly among the strains of M. smeg. containing pMV261-hspl6. 3 while compared with the control strains of M. smeg. containing free plasmid vector. But we found that the ability of anti-H2O2 will be increased greatly among the strains of M. smeg. containing pMV261-38kDa while compared with the same control.
尽管Hsp16.3中有三个甲硫氨酸在体外能被过氧化氢(H_2O_2)逐一氧化，我们将Hsp16.3基因克隆到pMV261质粒上，并转染到耻垢分枝杆菌中发现，转染了pMV261-16.3的耻垢分枝杆菌抗过氧化氢的能力大大下降，而对照含pMV261-38kDa的耻垢分枝杆菌抗过氧化氢的能力却有明显的增强，据此，我们认为，Hsp16.3在细胞内可能不具有抗过氧化氢的能力。
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Thenard(1811), the discoverer of hydrogen peroxide, expected that its degradation in living tissue is performed by a special substance, which Schonbein (1863) identified as a certain kind of 'ferment'. Loew (1901) was the first who named this H2O2-degrading enzyme catalase, but it took further 22 years until Warburg (1923) demonstrated that the active center of catalase contains iron, as concluded from the characteristic inhibition with cyanide.
过氧化氢的发现者Thenard ，希望活体组织中过氧化氢的降解是由一种特殊物质引起的，Schonbein定义这种特殊物质为某种酵种，Loew是第一个定义为过氧化氢降解酶，22年后Warburg 证明过氧化氢酶的活性中心含有Fe，正如从已知氰化物的特性得到结论。1927年，WIeland提出了一个简单的细胞过中氧化氢酶的解释。
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The results show that a little amount of heteropolymolybdovanadophosphate can remarkably speed the degradation, the best conditions of the oxidative degradation of chitosan with hydrogen peroxide catalized by heteropolymolybdovanadophosphate in homogeneous condition are as follows: the ratio of catalyst and chitosan is 1 to 10, concentration of hydrogen peroxide is 0.15%, the temperature is 80℃, reaction time is 2h. 0.2g chitosan was degraded under the best condition and the molecular weight by viscometry was degraded from 1460000 to 7812. then water-soluble chitosan was obtained by this method; The heterogeneous method is a high efficient way, the best condition of this method are as follows: the ratio of catalyst and chitosan is 2 to 100, the volume of 30% hydrogen peroxide is about 3mL, the temperature is 90℃, reaction time is 5min～30min.
研究结果表明，适量磷钼钒的存在可显著加速壳聚糖的降解，磷钼钒催化过氧化氢均相氧化降解壳聚糖的适宜反应条件是：催化剂与壳聚糖的质量比为1∶10、过氧化氢百分浓度为0.15％、反应温度为80℃、反应时间为2h，在此条件下对0.2g溶解在100 mL 0.5％稀醋酸中的壳聚糖进行降解，可使壳聚糖的粘均分子量由原来的146万下降到七千多(7812)，成为水溶性低分子量壳聚糖，从而达到应用的要求；在异相条件下以磷钼钒为催化剂催化过氧化氢氧化降解壳聚糖是一种高效快速的方法，此法降解壳聚糖的最佳反应条件是：催化剂与壳聚糖的质量比为2∶100；30％过氧化氢的用量为3mL左右；反应温度为90℃、反应时间为5min～30min。
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H 2O 2 enhanced oxygen delignification of kraft reed pulp was carried out in this study.
进行了硫酸盐法荻苇浆过氧化氢强化的氧脱木素漂白试验，对氧脱木素浆的高温压力过氧化氢漂白工艺进行了初步研究，并进行了常规过氧化氢补充漂白试验。
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On the other hand, so far as we know, the characterized catalase is the first dimeric monofunctional catalase from alkaliphiles and is also the first monofunctional catalase derived from a natural soda lake, which could partially reflect the oxidative stress response in the corresponding environment.
另一方面，本文所研究的过氧化氢酶是第一个来源于嗜碱微生物的同源二聚体单功能过氧化氢酶，也是第一个来源于天然碱湖的单功能过氧化氢酶，它能部分地反映出细胞抗氧化体系对相应环境的适应情况。
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When using urea-hydroperoxide as oxygent, just the trimethylphosphine adsorbed on the Lewis acid sites in TS-1 zeolite was oxidized. It further confirmed that the hydroperoxo-titanium species formed by the interaction between the titanium in Lewis acid sites and urea-hydroperoxide are the active oxidation center, and the titanium in the framework as Lewis acid sites enhances the oxidation ability of hydroperoxide. 3. Phenylacetaldehyde and benzaldehyde are found to be the major products in the catalytic oxidation of styrene over TS-1 zeolite, and styrene epoxide is not as speculated detected.
当以过氧化氢尿素为氧化剂时，室温条件下吸附在TS-1分子筛Lewis酸性位的三甲基膦即能被氧化，由此进一步证明，TS-1分子筛中由Lewis酸性位的骨架钛与过氧化氢相互作用形成的过氧化钛物种是三甲基膦氧化反应的活性中心，骨架钛作为Lewis酸中心提高了过氧化氢的氧化能力。
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The results show that:First, concentration of hydrogen peroxide have the most obvious influence to oil yield and carbon black yield,with the increase of concentration of hydrogen peroxide the oil yield first increase then decrease,when concentration of hydrogen peroxide is 8.19% or so,the oil yield reach to the biggest value, and with the increase of concentration of hydrogen peroxide carbon black yield decrese;Then,reaction time have more obvious influence to oil yield and carbon black yield,oil yield increase but carbon black yield decrease with the increase of reaction time;Thirdly,reaction tempreture have some influence to oil yield and carbon black yield,samely,oil yield increase but carbon black yield decrease with the increase of reaction tempreture;Finally,reaction pressure does almost no influence on oil yield and carbon black yield.
研究结果表明：过氧化氢质量浓度对产油率和炭黑产率的影响最为显著，产油率随过氧化氢质量浓度的提高先提高后降低，在过氧化氢质量浓度为8.19%左右时达到最大值，炭黑产率随过氧化氢质量浓度的提高而降低；反应时间对产油率和炭黑产率的影响也比较显著，产油率随反应时间的增加而提高，炭黑产率随反应时间的增加而降低；反应温度对产油率和炭黑产率也有一定的影响，产油率随反应温度的提高而相应地提高，炭黑产率随反应温度的提高而降低；在本文实验范围内，反应压力对产油率和炭黑产率基本上没有影响。
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A precise method was established as follows: hydrogenperoxide should be separated from flavonoids by passing the flavonoid solutionsthrough alumina columns before the measurement and the amount of hydrogenperoxide generated from self-oxidation of the flavonoids should be deducted.
提出并确立了正确的方法：准确测定黄酮类化合物辐照体系中的过氧化氢G值，必须先用柱色谱法将过氧化氢从辐照体系中分离出来，再扣除黄酮类化合物因自氧化而产生的过氧化氢的量，才能得到正确的过氧化氢G值。
- 更多网络解释与过氧化氢相关的网络解释 [注：此内容来源于网络，仅供参考]
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peroxide bleaching：过氧化氢漂白
氧脱木素:one stage oxygen bleaching | 过氧化氢漂白:peroxide bleaching | 全无氯漂白:totally chlorine-free bleaching
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catalase：过氧化氢酶
● 氧化酶(oxidase)氧化酶作用于不同的底物,其共同特征是氧化底物的同时,将氧还原成过氧化氢:● 过氧化氢酶(catalase) 过氧化氢酶是过氧化物酶体的标志酶,它的作用是使过氧化氢还原成水: 2H2O2→ O2 + 2H2O.
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catalase：过氧化氢
ROS甚至可能自己调控代谢率,许多基因及蛋白质被认为能抵抗氧化压而延长生命,过氧化氢#(catalase)与超氧物歧化(superoxide dismutase)-处理过的线虫,能比正常的多活44%(Bick Institute Simm Melov发现)在果蝇中,
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catalase test：(牛奶的)过氧化氢酶值测定
catalase 过氧化氢酶;接触酶 | catalase test (牛奶的)过氧化氢酶值测定 | catalysagen 催化剂原
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catalase,peroxidase：过氧化氢酶
过氧化酶体 peroxisomes | 过氧化氢酶 catalase,peroxidase | 肌酸 creatine
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CAT Catalase：过氧化氢酶
BSA Bovine Serum Albumin牛血清白蛋白 | CAT Catalase过氧化氢酶 | CAD Cinnamyl alcohol dehydrogenase肉桂醇脱氢酶
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cumene hydroperoxide：异丙苯过氧化氢
cumbraite 培斑安山岩 | cumene hydroperoxide 异丙苯过氧化氢 | cumene process for acetone 异丙苯法生产丙酮的工艺
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cumene hydroperoxide：过氧化氢枯烯
Cumene 枯烯 | Cumene hydroperoxide 过氧化氢枯烯 | cupel 烤钵;灰皿
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hydrogen peroxide solution：过氧化氢溶液
hydrogen nitrate 硝酸 | hydrogen peroxide solution 过氧化氢溶液 | hydrogen peroxide turbine 过氧化氢涡轮机
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hydrogen peroxide bleaching：过氧化氢漂白
hydrogen peroxidase 过氧化氢酶 | hydrogen peroxide bleaching 过氧化氢漂白 | hydrogen peroxide 过氧化氢