瓶装物料的冻干规律研究

以脱脂牛奶为物料,进行了瓶装物料的冷冻干燥试验,探索了加热温度,辐射温度与冻干室压强对冻干过程的影响规律,分析了所得冻干曲线的特征,并对冻干机理和物料温度的监测井行阐述,得到在加热温度与辐射温度相同时恒温恒压操作的最佳参数,并提出了一些强经冻干过程的措施。本研究对实验冻干生产有一定的指导作用,也为瓶装物料的二维理论模型研究提供了基础。     

高温装置工程放大的基础技术

讨论了高温装置工程放大的基础,涉及固体结构和流体流动在时空尺度上外推的若干问题,综述了学科前沿的研究进展,并提出拟实工程放大的概念。     

电镀锌基合金的耐蚀性

近年来,在表面处理方面,由于锌基合金呈现出很多优良的性能,特别是高的防护性,已越来越受到人们的青睐。对电镀锌基合金（主要是锌与铁族形成的合金）的性能进行了综述,并重点讨论了锌基合金的耐蚀性。     

氢离子注入硅片退火行为的高压电镜原位观察

采用高压电子显微镜（ＨＶＥＭ）的原位观察技术,在１ＭＶ加速电压和室温至６５０℃加热条件下,观察了氢离子注入硅片中缺陷层的变化。在５００℃以下,氢离子注入缺陷层基本没有变化,在６５０℃保温时,缺陷的密度逐渐降低,样品中薄区域部分的缺陷在保温２０ｍｉｎ后消失,而厚区域部分在保温４０ｍｉｎ后仍存有部分缺陷,说明缺陷的变化与样品厚度有关。用氢的扩散理论讨论了这一现象,提出氢可能是以Ｈ２分子的形式扩散的     

A concurrent manufacturing strategy for One-of-a-Kind Products with complicated sculptured surfaces

In this paper, we propose a computer-aided system for concurrently designing and manufacturing a customised or One-of-Kind Production (OKP) mould or die which has complicated sculptured surfaces. Considering the OKP production characteristics of high customisation and concurrent product development and production, we believe that the concurrent consideration of both the design and the manufacturability of a mould or a die would be necessary. This concurrence can be realised by providing timely manufacturability information feedback after a design is completed or a feature is modified or added in the design. The other problem is that the sculptured surface geometry model of a mould or a die does not contain any machining information. Hence we developed an intermediate data model for capturing manufacturing features when we are modelling the geometric form of a mould or a die. The system is based on CADDS5 which is a commercial CAD/CAM system. Two modules for data extraction, coverting and modelling as well as for manufacturability analysis have been developed and added to CADDS5. Using this computer-aided system; a designer can interrogate geometry and machining constraint information through a user friendly interface to avoid defects and inefficiency resulting from an earlier design, and can finalise the design by making quick incremental adjustments. The system has been implemented in a mould and die manufacturing company in China. This implementation leads to less rework and shorter lead time.     

改革创新 科技节能

本文论述了荡坪钨矿近些年依靠科技进步,广泛应用节能新技术、新产品、新工艺及新材料,大力开展节能技改增效工作,提出了该矿今后重点节能技改项目。     

曲面光顺的分片能量法

能量法是一种目前被广泛采用的光顺方法,但当数据点较多时,能量法的存储量和计算量都很大。本文研究Ｂ样条曲面光顺的分片能量法。应用该法可以在保持光顺效果的能量法基本一致的前提下,大大地减少了存储量和计算量。实例表明,这是一种行之有效的曲面光顺方法。     

工艺参数对磁控溅射TiN膜成分影响的研究

在不同的工艺参数条件下 ,采用磁控溅射技术制备了大量的TiN膜样品。通过对实验结果的仔细分析 ,得出了膜层颜色与氩气分压无关 ,而与溅射功率和氮气分压的比值有关的结论 ,并得到了微观结构分析的证实。对磁控溅射法制备TiN膜技术具有一定的参考价值     

Saikosaponins from roots of Bupleurum scorzonerifolium

Saikosaponin u and saikosaponin v, were isolated from the roots of Bupleurum scorzonerifolium and these saponins were identified as 3-O-[beta-D-glucopyranosyl-(1-->2)-beta-D-glucopyranosyl- (1-->3)-beta-D-fucopyranosyl]-3 beta,16 alpha,23,28-tetrahydroxy-olean- 11,13(18)-dien-30-oic acid-30-O-[pentito(1-->1)-beta-D-glucopyranosyl-(6-->)] ester and 3-O-[beta-D-glucopyranosyl-(1-->3)-beta-D-fucopyranosyl]-3 beta,16 alpha,23,28-tetrahydroxy-olean-11,13(18)-dien-30-oic acid-30-O-[pentito(1-->1)-beta-D-glucopyranosyl(6-->)] ester, respectively.     

特低渗超高压深层边水油藏的开发方式

对典型的特低压深层边水油藏文８８块的开发方式进行了研究,研究表明：油藏弹性溶解气驱和边水驱量较充足,油藏差,原油粘度低,流度较大,难以实现注水开发,而利用天然能量开发地质,工艺经济上皆可行。并就此研究了配套的开发技术政策,作出方案部署,经实施,油藏开发水平提高,经济效益显著。