Development of the Chinese Scientometric Indicators (CSI)

We describe the Chinese Scientometric Indicators (CSI), an indicator database derived from the Chinese Science Citation Database (CSCD). Its design is supported by the Natural Sciences Foundation of China (NSFC). In this indicator database data of a statistical nature are organized and categorized leading to ranked lists and providing bases for comparisons among Chinese institutions and regions.     

载重轮胎胎圈钢丝包胶配方的改进

以提高粘合性能为中心，探讨载重轮胎胎圈钢丝包胶配方的改进。与生产配方相比，改进配方用NR／SBR体系替代NR／BR体系，用白炭黑和氧化钙减量替代轻质碳酸钙和陶土，增大硫黄用量，用后效性促进剂DZ替代DM和部分NOBS。改进配方胶料的粘合性能、物理性能和耐热老化性能提高，成品轮胎钢丝圈的H抽出力明显增大。     

Modélisation Mathématique de la Décantation de la Boue Rouge

A good performance of the solid‐liquid unit operation is required for the economical exploitation of the Bayer process. A computational fluid dynamics (CFD) model simulating the operation of the last washing stage mud thickener of a large Canadian alumina plant is presented. The parametric study of the impact of changes in four parameters shows that the diameter of flocculated red mud particles, the feed flow rate and the radius of the feed well are critical parameters for the operation of the thickener.     

Ergonomic evaluation of electronic paper: Influences of anti‐reflection surface treatment,illumination, and curvature on legibility and visual fatigue

Abstract— The intent of this study is to investigate some critical factors that affect legibility and visual fatigue while reading on an electronic‐paper display in terms of ergonomics. Anti‐reflection surface treatment, ambient illumination, and bending curvature are taken into account to evaluate their effects by using the method of letter‐search task. The results showed that the surface treatment with high degrees of anti‐reflection significantly improved the legibility and reduces visual fatigue. Thus, electronic‐paper manufacturers may choose a much better surface treatment in order to meet ergonomic demand. In addition, the findings in the present study also indicate that subjects reported less visual fatigue on a bending surface of a visual display unit, in comparison with a plane surface. It is proven that these ergonomic evaluations for electronic paper provide manufactures with useful information to design suitable products for users.     

One‐Step Fast Synthesis of Li4Ti5O12 Particles Using an Atmospheric Pressure Plasma Jet

A one‐step process to fabricate crystalline Li₄Ti₅O₁₂(LTO) particles directly from solution using an atmospheric pressure plasma jet (APPJ) is reported. This process uses Ti and Li ions‐containing salt solutions as the precursor, which is ultrasonically nebulized and then transported to the downstream of the APPJ using a carrier gas. With an extremely short contact time (<0.1 s) between the precursor droplets and the plasma jet, crystalline LTO can be fabricated in one step without additional rinse and postannealing steps. The LTO particle size can be effectively controlled using a preheater, the precursor solution composition and concentration, and the carrier gas flow rate. By properly adjusting the operating condition, particles of diameters from 100 nm to few μm with various morphologies can be obtained. When used as an electrode material, the resulting LTO powders fabricated under selected conditions show specific capacities over 100 mAh/g even at 50 C rate.     

纳米铝填充聚苯乙烯熔融纺丝及其性能研究

采用分散聚合法合成了聚苯乙烯(PS)及在PS中掺杂纳米铝(Al NPs)的PS/Al NPs复合材料,采用熔融纺丝法制备了PS及PS/Al NPs纤维,并对其结构与性能进行了研究。结果表明:重均相对分子质量(Mw)为(5~25)×104的PS,在220~270℃熔融纺丝,制得PS纤维直径可达25μm,断裂强度为1.2 c N/dtex,断裂伸长率为4.8%;PS/Al NPs复合材料中Al NPs在PS中分散均匀,PS内部中的Al NPs抗氧化能力较好;与相同Mw的PS纤维比较,PS/Al NPs纤维的玻璃化转变温度提高了4℃,断裂强度提高了4.1%,断裂伸长率提高了13.3%。     

转角角钢塔耐张挂板型式的改进

高压输电线路耐张转角塔在转角较大的情况下,会出现耐张金具联接串与铁塔挂板的受力不在同一轴线上的情况,如U型环转动受限,其金具与铁塔挂板摩擦、压住等,工程上俗称"别牢"现     

由磷石膏和氯化钾制取农用硫酸钾

由本工作详细研究了在氨水存在下,由磷石膏和氯化钾反应制取农用硫酸钾的过程,进行了各种条件的试验。在氨的存在下,用氨水作为反应液相,实验条件为低温常压,溶液中氨水浓度控制在35％左右,溶液中高浓度的氨改变了硫酸钾和石膏以及其他盐类的溶解度,硫酸钾的溶解度明显下降,使硫酸钾优先沉淀下来,分离后即得硫酸钾产品,该产品的物相组成,经X衍射分析证明为K_2SO_4。     

车载火箭被动控制研究中的若干问题

本文主要讨论车载火箭被动控制理论。介绍了车载火箭被动控制的特点,火箭可采用的被动控制方式及其被动控制效果。最后得出结论:火箭被动控制适用于各种火箭系统,其方式也是多样的。     

Kernel support for zero‐loss Internet service restart

Owing to long serving time and huge numbers of clients, Internet services can easily suffer from transient faults. Although restarting a service can solve this problem, information of the on‐line requests will be lost owing to the service restart, which is unacceptable for many commercial or transaction‐based services. In this paper, we propose an approach to achieve the goal of zero‐loss restart for Internet services. Under this approach, a kernel subsystem is responsible for detecting the transient faults, retaining the I/O channels of the service, and managing the service restart flow. In addition, some straightforward modifications to the service should be made to take advantage of the kernel support. To demonstrate the feasibility of our approach, we implemented the subsystem in the Linux kernel. Moreover, we modified a Web server and a CGI program to take advantage of the kernel support. According to the experimental results, our approach incurs little runtime overhead (i.e. less than 3.2%). When the service crashes, it can be restarted quickly (i.e. within 210 μs) with no information loss. Furthermore, the performance impact due to the service crash is small. These results show that the approach can efficiently achieve the goal of zero‐loss restart for Internet services. Copyright © 2006 John Wiley & Sons, Ltd.