Results 71 to 80 of about 2,820 (166)
, 1994 The effects of aliphatic alcohol on the twisted intramolecular charge transfer (TICT) of p-N, N-dimethylaminobenzoic acid (DMABOA) in cetyltrimethylammonium bromide (CTMAB) micelle were examined by the TICT-typical dual fluorescence.
江云宝, 王秀娟
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Emulsification Characteristics of Whey Protein from Bactrian Camels in Xinjiang [PDF]
In this study, we comparatively investigated the emulsifying activity index (EAI) and emulsion stability index (ESI) of camel whey protein (CWP) and bovine whey protein (BWP) at different water/oil phase ratios (8:2, 7:3, 5:5, 3:7, and 2:8).
GAO Shenghan, MIAO Hao, NIU Qing, LIU Enhui, HE Ruiqi, HUO Chenkun, ZHANG Fei, Yang Jie, ZHAO Zhongkai
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Gaoya dianqiGIS中盆式绝缘子表面在外施直流电压时会积聚大量电荷使得沿面闪络电压大幅降低，从而引发一系列电气设备故障。基于上述问题，文中分析了盆式绝缘子表面电荷的来源与传导途径，采用有限元仿真计算方法构建了二维轴对称仿真模型以及设定相关参数，研究了电压极性、不同电压幅值以及电压极性反转对盆式绝缘子表面电荷分布的影响。结果表明，在直流电压下，凹面主要积聚与外施直流电压极性相反的电荷，凸面主要积聚与直流电压极性相同的电荷，且凹面积聚的电荷密度更大；在极性反转后-100 kV直流电压下 ...
罗传仙 +7 more
doaj
, 2007 【目的】研究非病毒基因载体聚乙二醇（PEG）-聚乙烯亚胺（PEI）共聚物的组成对体外介导基因传递的影响。【方法】将含PEG不同分子量和接枝量的PEG-PEI共聚物,与DNA形成复合物。考察带正电荷的PEI与带负电荷的DNA的相互作用,测定了PEG-PEI/DNA复合物的粒径和Zeta电位,及对Hela细胞的毒性和转染率。【结果】PEG侧链并未明显影响PEI与DNA形成复合物的能力;连接PEG5000能够明显降低复合物的粒径;复合物的Zeta电位随着PEG接枝量的增加而降低 ...
张璇, 潘仕荣
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Effects of pH on Oat Protein Isolate and Pickering Emulsion Stabilized by the Protein [PDF]
The structural and physicochemical properties of protein particles are typically modulated by pH through alterations in surface charge distribution and secondary structural conformations, consequently influencing the interfacial adsorption capacity and ...
Huiting WANG +8 more
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, 1993 细胞电泳技术可用于研究氟尿嘧啶(5FU),甲氨喋呤(MTX)和环磷酸胺(CP)等药物的电性,用戊二醛化绵羊红细胞(SRBC)为载体,分别吸附3种化疗药物,均可以导致细胞表面电荷下降致使电泳缓慢率为:5 FU 14.55％,MTX 13.77％,CP 12.21％,这3种药物均带正电荷 ...
李庆阁 +3 more
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Research progress on the correlation between plaque biofilm and peri-implantitis [PDF]
Bacterial overproliferation and virulence factors in plaque biofilms can cause inflammation of soft and hard tissues around the implant, resulting in peri-implantitis.
WEN Yan, WANG Yulan
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Structural stabilities and electronic properties of several dopants and surfaces of semiconductors [PDF]
, 2009 在当今追求科技产品多功能的信息时代，人们对微纳尺度光电器件和电子器件的要求日益提高。为获得新功能器件，制备稳定的n型和p型掺杂的新型化合物半导体材料凸显重要；同时，器件的比表面积随器件的尺度减小迅速增大，Si表面上金属的结构和特性对器件的性能影响极大。然而，在纤锌矿结构ZnO新型光电半导体中，存在非对称掺杂和获得的p型掺杂不稳定和极性表面非零偶极矩的静电不稳定的难题；在Si表面上的金属原子所形成的纳米团簇也存在结构稳定性和电子结构不确定等问题。极大地制约了这些半导体结构材料的应用。为此 ...
周昌杰
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Research Progress on the Effect of Dissolved Organic Matter on the Environmental Behavior of Cadmium in Environmental Remediation [PDF]
With the rapid development of the economy and society and the continuous emission of cadmium (Cd), Cd pollution has become a major environmental problem faced by China and the rest of the world.
Bo WANG +8 more
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