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161.
Polymer peroxides were synthesized by copolymerizing tert‐butyl‐3‐isopropenylcumylperoxide (D‐120) with styrene (St). Exothermic peak at 192.7°C in DSC thermogram indicated that peroxy bonds in D‐120 remained intact during the copolymerizing process. The polymeric peroxide was used to initiate polymerization of St. GPC results showed that polystyrene (PS) initiated by the polymeric peroxides was composed of both linear and branched molecules. In addition, the rheology test showed that PS samples initiated by polymeric peroxide contained branched structure and had lower shear viscosities. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 197–202, 2006 相似文献
162.
163.
Fengyang Wang Xueying Huang Li Du Weiguo Li Hongxuan He Chao Qi 《International journal of molecular sciences》2007,8(5):445-454
The small molecule, meso-tetra(α,α,α,α-o-phenylacetamidophenyl) porphyrin (Mr1147.0) was used as complete antigen to elicit MAb through the immunization and cell fusion techniques. The MAb 1F2 obtained was demonstrated to be very pure by MALDI/TOFMS. The subtype of MAb 1F2 is IgG2a, which has a relative molecular weight of 156,678.8 Da.No significant change in the intensity of absorption peaks in UV and CD spectra was observed over a pH range between 6 and 12. The high stability of the abzyme and the tight binding between Fe porphyrin and antibody were also demonstrated. Vmax, Km, κcat, κcat/Km for abzyme are 5.18 × 10−8 Ms−1, 1.50 × 10−8 M, 0.518 s−1, 3.45 × 107 M−1s−1, respectively. The data obtained indicate that catalytic antibody has high catalytic activity. The chloroperoxidase activity of MAb 1F2-Fe porphyrin complex is stable from 10 °C to 60 °C. 相似文献
164.
Polysulfone (PSf) asymmetric hollow‐fiber membranes, which have a dense outer layer but a loose inner layer, were tentatively fabricated by coextrusion through a triple‐orifice spinneret and a dry/wet‐phase inversion process. Two simple polymer dopes were tailored, respectively, for the dense outer layer and the porous inner layer according to the principles of the phase‐inversion process. By adjusting the ratio of the inner/outer extrusion rate, the hollow‐fiber membranes with various thicknesses of outer layers were achieved. The morphology of the hollow‐fiber membranes was exhibited and the processing conditions and the water permeability of the membrane were investigated. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 94: 259–266, 2004 相似文献
165.
杜晓明 《重庆科技学院学报(社会科学版)》2010,(20)
德日犯罪论体系与我国的犯罪论体系之间既有相同点,也有区别,相对于德日刑法论体系,我国的犯罪论体系既有优点,也存在不少缺点. 相似文献
166.
自行研制的专用于复杂电子设备的多学科优化设计平台及其关键技术,通过利用专业建模软件建立几何模型,并将其导入结构仿真软件、电磁仿真软件、热仿真软件进行多学科耦合仿真,进而对电子设备进行多学科优化设计.运用该软件,用户可以快速建立几何模型,对电子设备进行多学科仿真和优化设计,既方便用户使用,又提高设计效率. 相似文献
167.
工程中昂贵复杂系统的整机试验通常是小子样的,因此需要结合大量的先验信息进行系统评估,但这可能造成小子样的整机试验数据的信息被淹没。与通常考虑加权的融合方法不同,基于精度评估的正态逆伽玛分布推导了一类Bayes公式,将所有先验信息等价为单个整机试验数据,设计了相应的分布参数,结合等价先验样本量得到推导的后验结果,并给出案例分析了这类Bayes公式的应用范围和合理性。 相似文献
168.
Hong Zhang) Xiao-gang Li) Cui-wei Du) Hui-bin Qi) ) School of Materials Science Engineering University of Science Technology Beijing Beijing China ) Institute of Welding Surface Technology Baoshan Iron & Steel Co. Ltd. Shanghai China 《北京科技大学学报(英文版)》2009,16(4):414-421
The corrosion behavior and mechanism of hot-dip galvanized steel and interstitial-free (IF) substrate with alkaline mud adhesion were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), electrochemical impedance spectroscopy (EIS), and linear polarization. The results show that non-uniform corrosion occurs on the galvanized steel and IF substrate during 250 h with the mud adhesion. The corrosion products on the galvanized steel are very loose and porous, which are mainly ZnO, Zn5(OH... 相似文献
169.
Effects of shear rates on average cluster sizes (ACSs) and cluster size distributions (CSDs) in uni- and bi-systems of partly
charged superfine nickel particles were investigated by Brownian dynamics, and clustering properties in these systems were
compared with those in non-polar systems. The results show that the ACSs in bi-polar systems are larger than those in the
non-polar systems. In uni-polar systems the behavior of clustering property differs: at the lower ionic concentration (10%),
repulsive force is not strong enough to break clusters, but may greatly weaken them. The clusters are eventually cracked into
smaller ones only when concentration of uni-polar charged particles is large enough. In this work, the ionic concentration
is 20%. The relationship between ACS and shear rates follows power law in a exponent range of 0.176–0.276. This range is in
a good agreement with the range of experimental data, but it is biased towards the lower limit slightly.
Foundation item: Projects(50474037, 50874087) supported by the National Natural Science Foundation of China; Project (BK2006078) supported
by the Natural Scientific Funds of Jiangsu Province, China 相似文献
170.
介绍了移动测量系统采集的可量测实景影像在城市部件管理中的应用,通过对城市立面街景影像与部件地图、属性关联技术,利用实景影像对部件量测技术,提出了一种集成地图、部件属性库和多角度影像的城市部件管理新手段. 相似文献