片状洗涤剂(英)

讨论了片状洗涤剂的制备、特点及市场情况。片状洗涤剂在西欧市场取得成功 ,占领洗涤剂市场6 % ,并逐步进入美国和日本市场。     

DEVELOPMENT AND PRODUCTION OF FeAl BASED INTERMETALLIC ALLOYS

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Combining Aluminum Heat Treat with Hot Isostatic Pressing: A Comparison of Structure, Properties, and Processing Routes for a Cast AI-Si-Mg Alloy

WHEN CAST ALUMINUM COMPONENTS are usedin applications which require high strength,a T6heattreatment is often employed to bring the castings to amaximum strength condition.This heat treatmentconsists of three steps:a solution heat treatment,duringwhich the large deleterious phases which have formedduring solidification are dissolved into a solid solution;quenching,to produce a supersaturated solid solution;and an aging treatment which yields a microstructureconsisting of a fine array …     

TiB_2-xAl复合体系的SHS合成过程研究

研究了TiB_2-xAl复合体系的自蔓延高温合成(SHS)过程分析了组成、稀释剂含量对SHS过程的燃烧温度、燃烧波速度和试样体和变化的影响点火过程研究表明,点火温度影响点火持续时间、但不影响SHS本身的燃烧温度和燃烧波速度     

美国电池市场小考

通过对1994年1—5月间美国从世界各地进口各种一次电池、二次电池总贸易额的分析,结合近年来对美国日本电池工业发展动向的观察,本文试图阐明中国电池出口美国应努力的目标。     

泥饼抗剪强度研究

介绍了利用动滤失装置测定泥饼抗剪强度的实验原理,该装置主要由过滤介质、泥浆挡板、转速控制系统和数据采集系统几个部分组成。在0.69MPa压力下,9min内,依次做剪切速率为400s~(-1)、100s~(-1)和400s~(-1)的三步实验,测定不同配方泥浆的抗剪强度。分析了基浆、降粘剂、降滤失剂、pH值、压差及实验重复性对泥讲强度的影响。结果表明,抗剪强度s值的范围为0～1,除了加入分散性较强的处理剂的泥浆以外,泥饼的抗剪切性一般都是很好的,而且不同的泥饼抗剪强度差别很大,泥浆的滤失量与泥饼的抗剪強度之间没有必然的联系。     

水基流体中页岩的渗透水化

使用放射性示踪剂监控水在岩心中的运移,发现进口池中的水相活度越低,水的运移速率越小。而当进、出口池之间的水活度差较大时,观察到了水的体积流量。试验结果证实了页岩与水基流体之间存在着渗透现象,且页岩是一个非理想性的半透膜。     

考虑纵向与横向耦合效应的束流传输

束流的纵向压缩,也即聚束,是强流加速器所必需的。但是,有关聚束过程的物理机制,目前尚未十分清楚。作者推导得出了计入聚束过程中束流强度变化的纵向与横向耦合的包络线方程,为研究考虑聚束效应的束流传输提供了工具,并实际应用于马里兰大学的电子束脉冲压缩实验的物理设计中。     

Recent Results on Field Reversed Configurations from the Translation, Confinement and Sustainment Experiment

The field-reversed configuration (FRC) offers an attractive alternative approach to magnetically confined fusion because of its extremely high β, simple linear geometry, and natural divertor for helium ash removal. Multi-hundred eV and high density FRCs have been produced using the standard Field Reversed Theta Pinch (RFTP) method, with a confinement scaling that leads to fusion conditions. These FRCs are, however, limited to only tens of mWb fluxes and sub-msec lifetime. Recent progress has been made in building up the flux and sustaining the FRC current using Rotating Magnetic Fields (RMF) in the Translation, Sustainment, and Confinement (TCS) facility at the University of Washington. TCS has demonstrated formation and steadystate sustainment of standard, flux-confined, prolate FRCs. The RMF also provides stability for the n = 2 rotational mode, which is the dominant global instability observed experimentally. Simple calculations show that a strong radially inward force imposed by the RMF increases proportionally to any local outward deformation of the plasma cross section. Evidence of this has been experimentally demonstrated, and the effects of various RMF antenna geometries studied. High temperature FRCs could also be produced in TCS by translating high energy plasmoids formed in the normal theta pinch manner into the confinement chamber containing the RMF antennas. Extremely interesting results were obtained for this translation and capture process. The plasmoids can survive the violent dynamics of supersonic reflections off magnetic mirror structures, producing a stable high-β, near-FRC state with substantial flux conversion from toroidal to poloidal. This is a tribute not only to the robustness of FRCs, but also to the tendency of anFRC to assume a preferred state for a magnetized plasma. The magnetic helicity, as inferred by a simple interpretive model, is approximately preserved, possibly conforming to a high-β relaxation principle.