贵港航运枢纽工程通过交工验收

广西西江航运建设二期贵港航运枢纽工程交工验收会于2001年1月10日至12日在贵港举行。 　　本次验收工作由区交通厅主持，参加单位有工程指挥部、监理部、设计单位、施工单位及运行单位。在验收会上，各方代表对广西电力院的设计工作给予了很高的评价。区交通厅质量监督站对本工程的质量等级核定为优良。经过一年多试运行考验，所有设备运行指标均达到设计要求。1999年2月1日至2000年11月30日发电量已达9.16亿kW*h，创电费收入2.437亿元，开始发挥巨大的工程效益。 　　 (撰稿　刘益祥)     

THERMAL DEBINDING OF A NEW BINDER

ＴＨＥＲＭＡＬＤＥＢＩＮＤＩＮＧＯＦＡＮＥＷＢＩＮＤＥＲ①ＺｈｏｕＪｉｃｈｅｎｇ，ＨｕａｎｇＢａｉｙｕｎ，ＷｕＥｎｘｉ，ＹｕＬｉｇｏｎｇ，ＱｕＸｕａｎｈｕｉＮａｔｉｏｎａｌＫｅｙＬａｂｏｒａｔｏｒｙｆｏｒＰｏｗｄｅｒＭｅｔａｌｕｒｇｙ，Ｃｅｎｔｒａ...     

Effect of a direct magnetic field on the interfacial microstructure between molten aluminium and solid iron

Many processing techniques, such as hot dip aluminizing, bimetal formation, liquid metal corrosion, cementing, welding and diffusion bonding, are basically dependent on interfacial reactions [1-3]. It is therefore important to investigate the formation and growth of intermetallic layers at the interface. There have been several studies carried out to examine chemical compositions and growth kinetics of intermetallic layers in the Al-Fe system [4-9]. Most authors have come to an agreement that…     

Advances in the research of nitrogen containing stainless steels

The current status of nitrogen containing stainless steels at home and aboard has been introduced. The function and existing forms of nitrogen in the stainless steels, influence of nitrogen on mechanical properties and anti-corrosion properties as well as the application of nitrogen containing cast stainless steels were discussed in this paper. It is clear that nitrogen will be a potential and important alloying element in stainless steels. And Argon Oxygen Decarbonization (AOD) refining can provide an advanced manufacture process for nitrogen containing stainless steels with ultra-low- carbon and high cleanliness.     

EFFECT OF COMPOSITION ON PHYSICAL PROPERTIES OF AMORPHOUS Fe-Si-B ALLOYS

ＥＦＦＥＣＴＯＦＣＯＭＰＯＳＩＴＩＯＮＯＮＰＨＹＳＩＣＡＬＰＲＯＰＥＲＴＩＥＳＯＦＡＭＯＲＰＨＯＵＳＦｅＳｉＢＡＬＬＯＹＳ①ＷａｎｇＬｉｎｇｌｉｎｇ，ＺｈａｏＬｉｈｕａ，ＨｕＷａｎｇｙｕ，ＷｕＬｉｊｕｎ，ＺｈａｎｇＢａｎｇｗｅｉＤｅｐａｒｔｍｅ...     

Discussion on compact mechanism of air-stream and synchro-formed clamp plate impact molding

1 .Introduction Due to many advantages such as simple molding machine structure high compact compaction of sand mold, speed and well-distributed the air-stream impact molding method However, has been extensively used in production.when this molding method is applied to mold complicated pattern with wider top surface and deep     

元搜索引擎中排序融合算法的优化研究

为了提高元搜索引擎的查准率,提出一种改进的排序融合算法.首先,根据搜索返回结果中文档的位序以及包含该文档的成员系统数目计算文档初始评分;其次,引入BM25F算法模型计算文档的相似度;最后,增设域名缓存表统计文档的URL分值;综合上述三项计算值,得到文档的最终评分并作为排序依据.实验结果表明,所提出的优化算法显著提高了元搜索引擎系统的查准率.     

高速动车组侧墙焊接工装改造研究

论文通过对高速动车组列车侧墙焊接工装改造前后实际效果进行对比分析,根据高铁焊接工装的焊接要求,对现有工装进行改造。经改造后换型效率显著提升,解决了现有工装换型慢,效率低,精度低的问题。论证了自动化系统在运行效率的重大优势,对运行管理的重要作用,提出了智能化是自控系统发展方向的观点。     

1α-羟基去氢表雄酮的合成与应用研究进展

1α-羟基去氢表雄酮是合成马沙骨化醇的起始原料,也是合成维生素D类衍生物关键中间体和原料,具有良好的市场前景。标题化合物的合成研究已有半个多世纪的历史,但适于工业化的合成工艺尚待于开发。按起始原料不同对标题化合物合成方法和应用进行综述。合成标题化合物起始原料主要有1,4-雄烯二酮和去氢表雄酮。以去氢表雄酮为原料的合成方法又分为化学法和微生物法。     

连串式基础有机化学实验教学实践——以2,2’-二丁氧基-1,1’-联萘的合成为例

文章以2,2’-二丁氧基-1,1’-联萘的合成为例,介绍了基础有机化学实验教学中,引入连串式实验教学的概念。该设计提高了对学生基本实验操作技能和规范性的要求,增强了实验考核的客观性和公平性,融入了工程意识的理念,加强了环境保护的意识。