回顾过去值得欣慰展望未来让人振奋——记无锡五洋赛德压缩机有限公司十年走过的路程

在艳阳高照，阳光明媚的五月，我们应无锡五洋赛德压缩机有限公司的邀请参加公司的十年庆典，对于参加中国压缩机行业第一个私营企业这样的庆祝活动，还是第一次。怀着对他们敢于在行业中引进竞争的勇气的敬意，我们亲身体验了一下他们具有的勇气、魄力与毅力。     

Quality at the controls

Condition monitoring should be brought right to where it is most needed - in the machine controller itself. That's the way forward to improved product quality control, say Dr P. Drake and Dr A.A. Buck.     

高速公路宜采用“入口检测、出口倒查”治超模式

本文就当前实施的高速公路入口检测系统方案展开研讨,根据高速公路运营管理的特殊性,借鉴高速公路治超十五年来所取得的经验,笔者认为不能简单地将治超工作全部交由入口承担,而应当将入口不停车称重检测与出口复称倒查双模式作为治超的组合拳,强调出口倒查,强化对违法行为的震慑力,提出了"入口检测、出口倒查"的高速公路治超模式,实现高速公路超载超限治理的既定目标。     

跨世纪的切削加工技术

日本三菱公司将跨世纪的切削加工技术归纳成以下几方面问题。1超高速加工超高速加工是高速切削和大进给量的复合,它需解决以下技术问题：（1）两面约束的定位夹持系统HSK系统（图1）正从德国DIN标准移植为国际ISO标准。KM系统（图2）是美国肯纳维公司的专利,两者在功能上差别不大。HSK和KM两系统的夹紧刚性见图3,两系统的荷重与变位关系见图4。（2）防止刀片飞出的定位结构（图5）①用模块因紧刀片,允许的切削速度不高;②用螺钉再加上短销。以BAP30O型面铣刀为例,铣刀直径为80mm,用M2．5螺钉固定刀片,紧团力矩为0．7Nm时,…     

世纪之初的制造技术

连续的变化过程还在继续,和20世纪后半期一样,由于应用了NC技术,使制造技术发生了根本性的但也是连续的变化。在这方面,人们不可能期望有重大的技术革新飞跃。某些开发如直线电机或并联机构在机床上的应用加速了前进的步伐。     

Evaluation of microvasculature at the auditory midbrain–the benefits of sectioning at a tangential angle

Vascular remodeling in the brain occurs as a plastic change following neural over‐activity. The auditory midbrain (or inferior colliculus, IC) is an ideal place to study sound‐induced vascular changes because it is the brain's most vascularized structure and it is tonotopically organized. However, its micro‐vascular pattern remains poorly understood. Since the IC is a sphere‐like structure, the histological assessment of vasculature could depend on the angle of sectioning. Here, we studied the effects of cutting the IC at different angles on microvascular assessment, specifically: micro‐vascular density and the shape of microvascular lumen. Photomicrographs were taken from 5 µm toluidine blue‐stained histological sections obtained at two angles of sectioning: (a) the conventional coronal sectioning, and (b) a novel “tangential” sectioning (tangential to the dorso‐medial surface of the IC). Results showed that the tangential sections, in comparison with the coronal sections, yielded (a) a higher count of micro‐vascular density and (b) a higher proportion of round‐shaped micro‐vascular lumens. This discrepancy in results between two cut angles is likely related to the spatial pattern of blood vessels supplying the IC. We propose that the tangential sectioning should be adopted as standard for the accurate study of microvasculature in the IC. Microsc. Res. Tech. 78:105–110, 2015. © 2014 Wiley Periodicals, Inc.     

横风条件下高速列车不同速度下空气动力性能数值仿真

采用流体力学数值计算软件FLUENT对我国某新型动车组横风条件下的空气动力学性能进行了数值仿真.研究了不同横风风速下,明线上高速列车在不同速度运行时的空气动力性能.根据计算得到的数据,分析了不同横风速度和车速时相应的车体纵、横向气动力变化的规律及成因,得到了相应的结论,为今后列车在横风作用下的运行安全性提供一定的依据.     

Dental tribology at the microscale

Dental wear caused by tooth care is a complex phenomenon that depends on the quality of the tooth material, the type of toothbrush and the brushing slurry. Tooth wear is commonly determined in abrasion experiments using a standardized toothbrush in contact with a radioactively labeled dentin sample (RDA method). The increase of radioactivity in the slurry is a direct and highly-sensitive indicator for wear. It is, however, detrimental that RDA provides an integral view of the tribological processes leaving microscopic issues undetected. Therefore, in this contribution the macroscopic system of brush versus tooth was reduced to a microtribological setup analyzing the contact between a single bristle (monofilament) and a tooth sample. This setup allowed to correlate friction and wear events to topography and structure of the tooth and will enable the evaluation of cleaning processes microscopically in the future. In addition, results of this work were related to the literature results of RDA experiments.     

转轮工地制造之机加工

文中主要介绍了水轮机的重要部件转轮在电站现场加工的相关技术准备和技术要求，以及如何实现转轮工地加工的过程。为今后大型水轮发电机的转轮在电站现场制造提供可借鉴的经验。     

首都剧场用大幕机构的研制

剧场大幕作为现代机械化舞台上空悬吊设备之一 ,对舞台演出换场和划分舞台有效使用区域发挥着重要作用。按启闭方式分 ,大幕分为整体幕布升降式和分片幕布对开式 2大类 ,首都剧场舞台上空设备改造项目要求大幕既可对开又可升降。1　大幕机构的模式选择据我们了解 ,目前国内设计的剧场大幕 ,其对开及升降机构一般是采用 2种模式 ,一种是在大幕位置上设置 2套吊具 (如图 1) ,分别执行幕布的升降动作和幕布对开动作。演出时可以根据需要有选择地搭配 ,使用其中任意 1种大幕启闭方式。另一种是在大幕位置设置单一吊具 (如图 2 ) ,吊具可双图 1　…