开关稳压电源用铝电解电容器的失效机理

概述了开关稳压电源用铝电解电容器的工作状态和失效模式，着重讨论了开关稳压电源用铝电解电容器的开路失效和击穿失效机理。     

发根农杆菌R1000对野葛的遗传转化及其影响因素

初步研究了发根农杆菌R10 0 0对野葛 (Puerarialobata)的遗传转化及其影响因素。结果表明 :经发根农杆菌R10 0 0感染 13d左右可获得毛状根 ,毛状根诱导率及诱导密度分别为 17 9%和 3 9;降低YEB活化液的 pH值 ,或以肌醇 (10 g/L)代替酵母提取成分 ,可明显提高该菌种的致根性 ;叶片预培养 2～ 3d可提前 4d出根     

联产供冷与电力供冷能耗比较分析

文中将两种供冷能耗比较分解成用电煤耗差、用热煤耗量、增加产汽用电煤耗量三部分进行分析，按照热量法得出在目前一般情况下联产供冷比电力供冷通常费能和定性定量结论，为全面研究比较热电冷联产与分产的能耗奠定一个基础。     

宝浪油田侏罗系三工河组浅水辫状河三角洲沉积模式研究

焉耆盆地侏罗系三工河组广泛发育由辫状河进积到湖泊中形成的辫状河三角洲。这种三角洲特征显著不同于其它三角洲,其主体是辫状分流河道和水下分流河道。宝浪油田含油层段主体为辫状分流河道,以心滩发育为主要特征,是典型的浅水缓坡粗粒辫状河三角洲沉积。     

Bandpass filters using periodically loaded combline resonators

A novel combline filter is proposed for cellular‐radio base stations. The Q‐factor is significantly improved. The eigenvalue equation is expressed with the single‐team approximation in the gap region of the combline resonator. A two‐pole combline filter is designed. The calculation, simulation, and experiment results are presented and are in good agreement. © 2005 Wiley Periodicals, Inc. Int J RF and Microwave CAE, 2006.     

低品位硼矿的富集加工技术

报道了青海大柴旦地区低品位硼矿富集加工的新工艺，该工艺使硼矿品位30％－35％，B2O3收率大于80％，该工艺路线已工业化。     

中国学术期刊网燕化镜像站点建设

通过中国学术期刊网燕化镜像站点的建设，介绍了燕山石化镜像站点的配置及主要管理功能和对全文数据库的检索，浏览功能，同时介绍了新形势下，信息化建设的新观念，新思路，以及强化信息意识，加强信息服务产业化发展的重要性和迫切性。     

一种有效的四步施训模式

介绍一种在企业管理干部培训实施中的四步操作模式。通过对该模式整体思路和四个步骤操作要点的阐释,说明在对企业管理干部的培训实施过程中如何将学员的学习特征与现代培训理念、培训元素进行有机的结合,使培训效果真正落实到提高学员的能力上,以使其工作得到改善。     

Nucleation Mechanism for Bainite

Based on the experimental results that solute-depleted zone was observed in Cu-28Zn-4AI (mass fraction) at 523 K, AG is calculated as a positive according to the thermodynamic criteria for the spinodal decomposition of a ternary systems. So, the solute-depleted zone cannot be formed by spinodal decomposition. Dislocation density required by the formation of solute-depleted zone is estimated greater than 7.89×109 cm-2, according to the segregation of solute atoms around dislocations, which is not consistent with the practical situation for the alloy at 523 K. Associated with the internal friction experimental fact that internal friction peaks appear within the incubation for bainitic transformation in Cu-Zn-AI alloy, the equilibrium temperature, TO, is evaluated as 433 K for solute-depleted Cu-25Zn-3.4AI, which is lower than the experimental temperature 523 K. Thus, nucleation by shear mechanism is impossible in this circumstance. Therefore, it is concluded that, like bainite in steels and Ag-Cd, bainite in     

平面近场测试系统在天线测试和诊断中的应用

介绍了天线近场测量的基本原理和HD-1型平面近场测试系统,并对近场测量在实际天线测试中的应用情况、发展方向和应用前景等作了简单的描述。