还原

Bacterially triggered CDDS 细菌触发型细菌触发型 CDDS The presence of azo reductase enzymes play pivotal role in the release of drug from azo bond prodrugs while glycosidase activity of the colonic microflora is responsible for liberation of drugs from glycosidic prodrugs.

偶氮还原酶溶解酶的存在在偶氮键药释放过程中发挥关键作用，结肠菌群的糖苷酶活性负偶氮还原酶溶解酶的存在在偶氮键药释放过程中发挥关键作用，结肠菌群的糖苷酶活性负溶解释放过程中发挥关键作用的糖苷酶活性糖苷药物的解放。

The nine antidiabetic medicinal plants were Anredera cordifolia van Steenis, Alternanthera paronychioides St. Hil., Basella alba L., Callisia repens L., Duchesnea indica Focke, Psidium guajava L., Ruellia tuberosa L., Tripogandra cordifolia Aristeg., Talinum paniculatum Gaertn.. Their antioxidant activities were assessed using trolox equivalent antioxidant capacity, DPPH (1,1-diphenyl-2- picrylhydrazyl) staining, DPPH radical scavenging, reducing power and ferric reducing antioxidant power methods.

这九种治疗糖尿病的药用植物包括藤三七、绿苋草、落葵、铺地锦竹草、蛇莓、芭乐、消渴草、怡心草、土人参等，它们的抗氧化活性分析方法包括：Trolox当量的总抗氧化能力、DPPH染色法、清除DPPH自由基能力、还原力及铁还原抗氧化能力等。

The objective of this research consists of two parts. In the first part, the heavy metals such as copper, zinc and nickel will be taken to study the effect on SRB during bioprecipitation process using mixture design. In the second part, bacteria population will be examined thoroughly using molecular techniques such as FISH, DGGE and PCR.

此研究主题主要分成二部分，首先利用混合实验设计法探讨三种不同浓度重金属对於硫酸还原菌进行生物沈淀程序之影响，其次藉由萤光原位杂交法计算出硫酸还原菌占总菌之百分比，并透过变性梯度胶体电泳法探究反应过程中微生物族群之变化。

Methyl-2,3,5,6-tetrafluoro-benzene methanol was synthesized by chlorination, acylation, fluorination, esterifica- tion, reduction, bromization, reduction from terephthalic acid. Tefluthrin was obtained from-(1RS,3RS)-3-(2-chloro-3,3,3-trifluoro-1-propenyl)-2,2-dimethyl cycolpropa-necarboxylate acid by reacting with 4-methyl-2,3,5,6-tetrafluoro-benzene methanol.

以对苯二甲酸为原料，经氯化、酰氯化、氟化、酯化、还原、溴化、还原七步反应合成了4-甲基-2，3，5，6-四氟苄醇，甲基苄醇与-(1RS，3RS)-3-(2-氯-3，3，3-三氟丙-1-丙烯基)-2，2-二甲基环丙甲酸一步酯化合成了七氟菊酯。

However, the first one enzyme 1-deoxy-D-xylulose 5-phosphate synthase gene and the second one enzyme 1-deoxy-D-xylulose 5-phosphate reductoisomerase gene in MEP pathway had been reported and expressed in the latex of rubber tree, indicating that MEP pathway may be involved in rubber biosynthesis.4 - hydroxy -3 - methyl -2 -- butenyl -4 - phosphate reductaseis the last enzyme that catalytic 4 - hydroxy -3 - methyl -(2E)- butenyl -4 - phosphate to generate isopentenyl pyrophosphate.

然而已有报道MEP途径中第1个酶1-脱氧-D-木酮糖-5-磷酸合成酶（1-deoxy-D-xylulose 5-phosphate synthase，DXS）基因和第2个酶1-脱氧-D-木酮糖-5-磷酸还原酶（1-deoxy-D-xylulose 5-phosphate reductoisomerase ，DXR）基因在橡胶树胶乳中的表达，这表明MEP途径可能参与橡胶的生物合成。4-羟基-3-甲基-2--丁烯基-4-磷酸还原酶（4-hydroxy -3-methyl-2--butenyl-4-diphosphate reductase，HDR）是异戊烯基焦磷酸合成途径之一甲基赤藓糖磷酸（methylerythritol phosphate，MEP）途径中的最后一个酶，催化4-羟基-3-甲基-(2E)-丁烯基-4-磷酸生成异戊烯基焦磷酸。

The metabolism and succession of microbial population took place ceaselessly during the fermentation and led to microbial polymorphism which mainly presented as anaerobe,methane bacteria,caproic acid bacteria,lactic acid bacteria,sulfate reducing bacteria,and nitrate reducing bacteria etc.

窖泥糟醅是发酵过程微生物栖息的生态环境，其中微生物种群随发酵过程的进行而不停地演替和代谢，具有明显的多态性。其微生物种群的多态性主要表现为厌氧异氧菌、甲烷菌、己酸菌、乳酸菌、硫酸盐还原菌、硝酸盐还原菌等。

The metabolism and succession of microbial population took place ceaselessly during the fermentation and led to microbial polymorphism which mainly presented as anaerobe, methane bacteria, caproic acid bacteria, lactic acid bacteria, sulfate reducing bacteria, and nitrate reducing bacteria etc.

其微生物种群的多态性主要表现为厌氧异氧菌、甲烷菌、己酸菌、乳酸菌、硫酸盐还原菌、硝酸盐还原菌等。

Molybdates were reduced to adsorbed hydrogen molybdenum bronzes on platinum electrode in H 2SO 4 solution during potential sweep cathodically.

钼酸盐在铂电极上硫酸溶液中还原形成钼青铜，吸附在电极表面，铂电极因钼酸盐的还原和钼青铜的氧化而得到修饰。

Preparation of the cathode includes:shaping under the press of 40Mpa, sintering at 550℃for 1 hour and at 900℃for 8 hours and threading with molybdenum bar; Considering the literatures we choose CaCl2 as salt for preparation titanium. Pretreatment of salt is for 1 hour at 100℃and for 2 hours at 300℃. Partial pressure of oxygen which need lower than 5.11×10-7Pa to reduct titanium oxides and hygroscopic property of salt need a sealed equipment to electrolyse. And finally successfully designed a satisfied one and the results show that the equipment can be satisfied the requirment of the experiment. Flow of the inert gas is 1.5L/min, the voltage is 2.8 V, temperature is 850℃and time is 2 hours during pre-electrolysis. Flow of the inert gas is 0.2L/min, the voltage is 3.1 V, temperature is 900℃and time changes with the mass of TiO2 during electrolysis, namely the greater need the longer time; To eliminate influence of salt and other impurities, the products need to wash with distilled water and dilute chlorhydric acid , then wash with dilute hydrochloric acid under supersonic wave assistant. Finally, electrometical properties of the electrolysis of TiO2 is researched by cyclic voltammetry and chronoamperometry, and results show that there are two main reodox steps, namely from TiO2 to TiO and from TiO to Ti.

阴极制备主要包括40MPa压力下模压成型、两段式烧结(1小时内升至550℃保温1小时，再1小时升温至900℃保温8小时)及烧结后TiO2块打孔用钼棒串接三个主要环节；实验中选用CaCl2作为电解熔盐，并对其进行预处理(100℃，保温1小时； 300℃，保温2小时)；经热力学计算，还原钛氧化物的氧分压至少要低于5.11×10-7Pa，结合电解过程中所用熔盐CaCl2有极强的吸水性的特点，电解装置应有较高的密封性，自行设计了一套密封性可靠的电解装置，便于实验过程中熔盐预处理和氧分压的控制；通过干燥处理预电解过程中Ar流量大约为1.5L/min、电压为2.8 V、温度为850℃、时间为2小时，电解过程中Ar流量大约为0.2L/min、电压为3.1V、温度为900℃，实验结果表明电解时间与TiO2质量密切相关，质量越大需要电解的时间越长；通过自来水冲洗—稀盐酸浸泡、洗涤—在超声波辅助作用下稀盐酸洗涤，可减少熔盐及其它杂质对电解产物检测结果的影响；最后，通过循环伏安法、计时电流法对电解机理的研究，确定电解还原TiO2制备金属钛主要经历了TiO2-TiO-Ti的过程。

UV-Vis spectrum showed that some monomer or oligomer were existed in this film. The results demonstrated that the PPy chains were served as both the reductant of chloroauric acid and the ligands to stabilize gold-NPs.

接着利用吡咯单体及寡聚体具有的还原性，将新合成的聚吡咯膜浸泡在氯金酸水溶液中搅拌反应，通过扫描电镜观察发现，在膜中还原生成了大量的金纳米粒子，同时在膜的表面也观察到了金纳米粒子的存在。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。