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The drying process of chrome liquor was studied. The structure andproperty of chrome complex reducing by alcohol were analysed and tokened by manypresent well-rounded separation and analysis methods such as IR, UV-Vis Spectrum,IEC and pH potentiometry. Application tests of chrome tanning agents wereconducted and tanning methods of tanning at high pH were studied. A systematic studywas conducted on high alkalinity chrome tanning agents application in leather makingprocess and possibility of clean chrome tanning was discussed.
本文系统地研究了多种小分子醇与重铬酸盐之间的氧化-还原反应,对反应过程进行了认真的剖析;对铬鞣液的干燥过程进行了研究;用红外光谱法、紫外及可见分光光度法、离子色谱法以及pH电位滴定法等多种比较成熟的现代分离分析方法相结合,对醇还原铬配合物的结构与性能进行了分析与表征;对铬鞣剂的鞣革性能进行了应用实验,研究了醇铬鞣剂在高pH值下的鞣制方法,并就高碱度铬鞣剂在制革过程中的应用进行了系统研究,探讨了用其实施清洁化铬鞣的可能性。
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In th is process,the social group of citiz enry further integrated oneself to coagulate and developed its legal power.
在此过程中,已具雏形的市民社会团体在城市近代化建设过程中进一步整合了自身的集团凝聚力,发展了自身的权限。
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According to the examining results of coagulum texture change during soymilk coagulation showing in this paper,when the coagulation is induced by Alcalase,a commercial alkaline proteinase,the pH value drops by (0.2,) and all the subunits of soy protein are hydrolyzed to 8-14 KDa peptides,indicating that the essential reason for the coagulation by Alcalase is the partial degradation of the peptide chains.
在Alcalase凝固豆乳过程中pH值下降程度小于0.2,SDS-PAGE电泳表明大豆蛋白质各亚基在凝固过程中均降解为8~14 Ku的肽段,说明大豆蛋白的部分降解可能是Alcalase凝固豆乳的根本原因。
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But, because of the complexity of the dye molecule, there has been short of detailed comprehension in its photocatalytic degradation process. The key problem is difficult to detect the intermediates clearly. In this paper, the photocatalytic degradation of azo dye Congo red in water solution was investigated on UV irradiating TiO2 in the homemade reactor. The optimization conditions were determined and then the rate of decolorization, COD decrease, yield of CO2 and varies pH of aqueous solution during illumination were detected; The varies of the possible intermediates during degradation process were monitored with UV-VIS spectrum and HPLC. The possible mechanism of Congo red photocatalytic degradation is discussed combined with the data of MS.
本文选择有代表性的常见偶氮染料—刚果红作为研究对象,以自制TiO2为催化剂和小功率紫外灯为光源,在自制光反应器上确定了光催化降解的优化条件,并在这个优化条件下测定了降解过程中的脱色率、COD去除率和CO2生成量;利用数显酸度计、紫外可见分光光度计和高效液相色谱仪跟踪测定了降解过程中的可能产物,并结合质谱的数据初步探讨了刚果红的可能降解机制。
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During the cold crystallizing process, when PBT component was above 20%, the existence of PBT promoted the cold crystallizability of the blends. While during the melt crystallizing process, the addition of a second component restrained the crystallization of the system.
在冷结晶过程中,当PBT含量超过20%时,将促进体系的结晶性能;而在熔融结晶过程中,第二组分的加入抑制了体系的结晶性能,当配比为50/50时,结晶速率相对最低。
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The Influence of Temperature and Humidity on Moisture Absorption and Deliquescence Property of Black Powder;2. Anhydrous solvent was chosen for CMP to avoid crystal craze and deliquescence .
介绍了硼酸锂铯晶体的应用前景及在化学机械抛光过程中存在的问题,简要分析了晶体在常温下开裂的机理,选用无水溶剂对晶体进行化学机械抛光以防止加工过程中晶体的潮解开裂。
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And the social democratism person has given up this macroscopical his...
而社会民主主义者在现实实践过程中舍弃了这一宏观历史结论,一开始就关注现实过程和功能意义上的国家与社会关系,并企求在现实国家中解决社会问题。
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And the social democratism person has given up this macroscopical histo...
而社会民主主义者在现实实践过程中舍弃了这一宏观历史结论,一开始就关注现实过程和功能意义上的国家与社会关系,并企求在现实国家中解决社会问题。
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An approach based on Bin-Packing algorithm and graph theory is proposed to avoid the hot-spot and distribute heat evenly on chip surface during test scheduling. First several parallel test set are derived from graph models. Then Bin-Packing algorithm constructs an initial test schedule.
在SoC的测试规划时,考虑为避免在测试过程中出现热点以及测试过程中使热量均匀分布,基于建立的问题模型得到一系列的并行测试集合,再通过Bin-Packing算法构造测试规划,并进行全局的优化。
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In this thesis, researches have been made on the structure of membrane protein and the process of protein aggregation and disaggregation by employing the two advantages of atomic force microscopy : nanometer resolution in liquids and in situ observation following a biological dynamical process during a long period. This thesis consists of four parts.
本论文利用原子力显微镜能够在溶液中观察生物大分子的结构并可以达到纳米级分辨率和能够在近生理的环境中对生物样品的活性过程进行跟踪观察的两大优势分别对膜蛋白的结构和蛋白质积聚、解聚的过程进行了研究。
- 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。