ERCP and CT findings of ectopic drainage of the common bile duct into the duodenal bulb

OBJECTIVE: The purpose of this study was to evaluate ERCP and CT findings of ectopic drainage of the common bile duct into the duodenal bulb. CONCLUSION: Although rare, the diagnosis of ectopic drainage of the common bile duct into the duodenal bulb is important to prevent inadvertent damage during biliary tract or gastric surgery and to clarify the cause of chronic peptic ulcers.     

气流式加速度传感器的敏感机理

介绍了在研制气流式加速度传感器过程中，为对气流式加速度传感器进行建模，作者对气流式加速度传感器的工作机理进行了理论性探讨。在分析过程中以流体力学、传热学和惯性理论为基础并结合实验结果，建立了适合于气流式加速度传感器的气体运动方程和能量方程。同时还讨论了热线测量加速度的方法及根据实验分析了输入加速度对腔体内温度及传感器输出电压的影响，从而为进一步研究一系列气流式传感器的工作机理提供了方法。     

鲁布革水电厂计算机监控系统的更新改造

鲁布革水电厂原Ｒ３０计算机监控系统更新改造过程中，重点研究了与原西门子ＲＴＵ的数据交换，机组功率调节和线路定功率调节的实现有关问题，在对３号机组计算机监控系统改造试验的基础上，成功地实现了计算机监控系统的整体改造，改造后采用的国产ＮＡＲＩＳＳＪ－３０００计算机监控系统实用可靠，功能完善，配置灵活，具有国际，国内领先水平。     

单轴-平面W型复合锶铁氧体的制备及其吸波特性研究

用草酸盐共沉淀和微量掺杂法研制六角晶系W型Ni,Zn,Co,Al多元复合锶铁氧体，通过调节Ni2W同Co2W的摩尔比例，可使该种铁氧体易磁化方向从C单轴型向垂于C轴的平面型转化，控制置换锶铁氧体中部分Fe3 的微量掺杂Al3 ，可以调整4πMs值，提高磁晶各向异性场，测试分析了5种不同含Co量的W型复合锶铁氧体粉料涂层的吸波特性，发现其自然共振吸收峰随Co含量增加向低频方向偏移，最高吸收峰可达32．8dB，是适用于电子隐形技术的高品位的微波吸收剂。     

建材研究的新热点——黄河淤泥沙综合利用进展及前景展望

简要介绍了黄河淤泥沙的特性及相关情况,论述了黄河於泥综合利用研究的进展及主要成果,概述了其工业化开发的现状,分析了其存在的问题,对其发展前景进行了预测。黄河淤泥沙综合利用工作是关系到国计民生、千秋万代的大事,具有重要的现实意义和深远的历史意义。     

双乙醛草酰二肼直接快速光度法测定食品中痕量铜

研究了双乙醛草酸二肼与铜的显色反应，建立了分光光度法直接测定铜的新方法。试验结果表明，在pH8．0－10．0范围内，Cu2 与双乙醛草酸二肼形成稳定的紫红色配合物。该配合物在540nm处有一最大吸收峰，其表明摩尔吸光系数为2．4×104，铜量在0－12mg／50ml范围内符合比尔定律。共存离子干扰，误差仅 2.00％。用于食品中痕量钢测定．结果准确、可靠。     

Self-aligned offset gated poly-Si TFTs with a floating sub-gate

We have fabricated a self-aligned offset-gated poly-Si thin film transistor (TFT) by employing a novel photoresist reflow process. The gate structure of the new device is consisted of two unique patterns: A main-gate and a sub-gate. The new fabrication method extends the gate-oxide over the offset region. With the assistance of the sub-gate and reflowed photoresist a self-aligned offset region is successfully obtained due to the offset oxide acting as an implantation mask. The poly-Si TFT with symmetrical offsets is easily fabricated and the new method does not require any additional offset mask step. Compared with the misaligned offset gated poly-Si TFTs, excellent symmetric electrical characteristics are obtained     

CIMS装配和拆卸生产线的可靠性分析

本文对ＣＩＭＳ装配线和拆卸线的可靠性问题进行研究。文中分析了它们的运行状况，求出了两种生产线的稳态可用度，并用一个例子加以说明。     

非串行生产线的建模,分析及设计

本文利用等效工作站理论和工件流平衡原理，推导出非串行离散事件生产线可以等价于串联系统，并归结为装配和拆卸两条定理，解决了系统的建模、分析与设计问题。     

Acidogenic fermentation of blended food‐waste in combination with primary sludge for the production of volatile fatty acids

The performance of a laboratory‐scale anaerobic acidogenic fermenter fed with a mixture of blended kitchen food‐waste and primary sludge from a sewage treatment plant was investigated for the production of volatile fatty acids (VFA). The operating variables for acidogenic fermentation were kitchen food‐waste content (10 and 25 wt %), hydraulic retention time (HRT: 1, 3 and 5 days), temperature (ambient: 18 ± 2 °C, and mesophilic: 35 ± 2 °C) and pH (varied from 5.2 to 6.7). The experimental results indicated that effluent VFA concentrations and VFA production rates were higher at ambient temperature than at mesophilic conditions. The net amount of VFA with 10 wt % food‐waste increased up to 920 mg dm^?3 with an increase of HRT, but contrasting results (a decrease of 2610 mg dm^?3) were found due to the conversion of VFA into biogas in the case of 25 wt % food‐waste, which increased significantly at HRT of 3–5 days. In terms of biogas composition (CO₂ and CH₄), the organic matter was converted into CO₂ through the oxidative pathway by facultative species at low temperature while mesophilic temperature and optimum pH (6.3–7.8) played a pivotal role in increasing rate of conversion of VFA into biogas by methanogenesis. Rates of VFA production and their conversion are dependent on the food‐waste content in the mixture. Yet, the higher concentration of food‐waste (25% compared with 10%) did not produce VFA proportionally due to the increased rate of conversion of VFA into gaseous products. The maximum VFA production rate (0.318 g VFA_produced g^?1 VS_fed day^?1) was achieved in the 10 wt % food‐waste at ambient temperature and at a 5‐day HRT. Copyright © 2005 Society of Chemical Industry