完善中板定尺收集工艺

通过分析影响中板定尺收集的各种因素，及时改造，完善定尺收集工艺，挽救了部分有缺陷、需要处理的钢板，提高了定尺率。     

轧钢厂定尺剪定尺机构的改造设计及应用

介绍了新钢公司中厚板轧钢厂定尺剪定尺机构的改造设计原理、过程与方法。经过改造后的定尺剪定尺机构成功解决了原有设计的不足,能灵活准确地实现生产过程中的工艺要求,创造了显著的经济效益和社会效益。     

应用电子技术提高钢板定尺机精度

在钢板宽度定尺机上安装旋转编码器，提高了钢板的定尺精度。     

260机组棒材定尺机构的改进

为适应市场变化改进定尺机构,实现了非定尺长度产品的生产,提高了技术经济指标,满足了市场的需求。     

定尺剪系统改造设计与应用

针对济钢2 500 mm轧钢产线定尺剪定尺误差大的问题,在原有基础上增添定尺机构,使用RS Logix 5000编程软件对硬件系统进行组态,采用MSG数据通信方式实现了多网络通信、定尺机自动定位、多电机同步减速控制,应用RS View设计上位画面,方便操作。应用表明,钢板定尺精度控制在±1 mm,提高了生产效率。     

Ф258轧管管坯定尺机的设计及应用

介绍了天津钢管集团Ф258热轧无缝钢管车间用于管坯精确定尺的定尺机的设计及其特点。该新型定尺机集液压、机械、电气和计算机控制于一体,可根据生产工艺要求锯切任意长度定尺,与传统定尺机相比增加了废料头准确收集功能。设备安装调试后各项技术指标均达到设计要求,并正式投入使用。     

φ258轧管管坯定尺机的设计及应用

介绍了天津钢管集团φ258热轧无缝钢管车间用于管坯精确定尺的定尺机的设计及其特点.该新型定尺机集液压、机械、电气和计算机控制于一体,可根据生产工艺要求锯切任意长度定尺,与传统定尺机相比增加了废料头准确收集功能.设备安装调试后各项技术指标均达到设计要求,并正式投入使用.     

PLC定尺系统在炼钢厂5^#连铸生产中的研究与应用

为解决炼钢厂5^#连铸机的红外无接触定尺系统受火焰切割干扰较大，切割精度不高，经常造成铸坯长短尺的问题，开发了PLC定尺系统，很好地解决了定尺问题。介绍了PLC定尺系统的原理以及使用效果。     

连铸机专用定尺切割控制器的应用

介绍了目前国内在连铸行业中,定尺切割控制的形式。天津天钢集团有限公司与天津文汇新技术研究所开发研究出的“新型连铸机专用定尺切割控制器,克服了传统专用定尺切割中存在的价格昂贵等缺点”。使用新型连铸机专用定尺切割控制器后,工作稳定、减轻了劳动强度、提高了钢坯收得率0．2％,获得了可观的经济效益。     

棒材定尺精度提升技术在中南股份中棒线的实践

介绍了中南股份中棒线提高棒材定尺精度所采用的措施，包括根据棒材热收缩量进行相应的长度补偿设定、棒材温度的检测基准设定及定尺挡板角度调整，这些措施都已应用到中棒线实际生产中，中南股份中棒线的定尺精度高于国际标准。     

Effect of Compressive Load on Uplift Capacity of Model Piles

Thirty six tests on model tubular steel piles embedded in sand were carried out in the laboratory to assess the effects of compressive load on uplift capacity of piles considering various parameters. The model piles were of 25 mm outside diameter and 2 mm wall thickness. The soil–pile friction angles were 21 and 29° in loose and dense conditions of sand. The piles were embedded in sand for embedment length/diameter ratios of 8,16, and 24 inside a model tank. They were subjected to a static compressive load of 0, 25, 50, 75, and 100% of their ultimate capacity in compression and subjected to pull out loading tests. The experimental results indicated that the presence of the compressive load on the pile decreases the net uplift capacity of a pile and the decrease depends on the magnitude of the compressive load. A logical approach, based on the experimental results, has been suggested to predict the net uplift capacity of a pile considering the presence of compressive load.     

Effects of Flexibility on Rocking Impedance of Deeply Embedded Foundation

This paper presents a detailed investigation of the influence on the rocking impedance of flexible sidewalls in embedded foundations. The study focuses on vertical and cylindrical foundations embedded in a homogeneous elastic stratum. In order to anticipate the effects of the flexibility, closed-form formulae for rocking impedance are derived based on three-dimensional wave propagation theory and superposition of both the rocking and flexural movements on a single model by assuming complete bonding conditions between the soil and foundations. A function representing the effect of the flexibility is identified from the closed-form formulae, in terms of the height to radius ratio of the foundations and the ratio of the stiffnesses of the ground and foundations. The rocking impedance for a flexible sidewall differs from those evaluated under the assumption of a rigid sidewall. The applicable range of rocking impedance evaluated under the assumption of a rigid sidewall is assessed, and contours to assist in the estimation of the dynamic response of deeply embedded foundations are presented.     

Review of A history of alcoholism.

Reviews the book, A history of alcoholism by Jean-Charles Sournia (1990). This book was first published in French in 1986, and this English translation was published in 1990. The book consists of 12 chapters divided into 3 parts. The first 3 chapters cover a period of 19 centuries, ending at approximately 1850. Included in these 3 chapters are materials pertaining to alcohol use and drunkenness in antiquity and drinking throughout Europe and in the United States during the 1700s and into the mid-1800s. The second part of the book, composed of 5 chapters, covers the following 100 years. It includes chapters on the Swedish physician Magnus Huss, the evolution of drinking patterns in several European countries (with a particular focus on France), alcohol and medicine, and the development and activities of temperance societies. The third and final part includes 4 chapters and covers the years since 1950, a period that has witnessed many advances in research on alcohol effects, risk markers, treatment, and prevention. The strongest section of the book is the first part, which provides an overview on the history of alcoholism. This section also provides a variety of interesting notions about alcohol use from the Ancient Greek world, in which wine played an important role. The book starts out strong and provides an interesting and readable perspective on the history of drunkenness and alcoholism. The last third of the book loses steam, direction, and focus, though. However, for the reader interested in a historical overview, the first two thirds of this volume are enjoyable and recommended. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

ZnO对焦炭与CO2反应的影响

摘要：锌作为有害元素,在高炉内循环富集给生产带来了一系列不利影响。采用醋酸锌水溶液浸泡法向焦炭中添加ZnO,研究了ZnO对焦炭与CO2反应的影响,采用3D光学数码显微镜对焦炭进行了微观观察,并对反应后焦炭表面形成物进行了XRD分析。结果表明,ZnO对焦炭与CO2反应有一定的催化作用,但焦炭表面的ZnO含量过高会降低其催化作用,其主要原因是ZnO和焦炭灰分中的SiO2很容易形成Zn2SiO4,并会在焦炭表面形成一层壳状物,堵塞焦炭气孔,阻碍焦炭与CO2的进一步反应。此外,锌蒸气较CO2更容易进入焦炭内部,并在其中发生还原与氧化循环反应,对焦炭内部结构造成破坏,从而影响焦炭反应后强度。     

Effect of small additions of a third component on the eutectic and peritectic temperatures of binary systems

The effect of additions of a third component on the temperature and composition of the eutectic or peritectic point of a binary system, at infinite dilution of this component, has been derived analytically. The depression of the eutectic temperature and the raising of the peritectic temperature are found to have an upper limit that no ternary element can exceed. The determination of the effect of a given solute on a eutectic or peritectic temperature hinges on the values of the activity coefficients of that solute at infinite dilution in the three phases in mutual equilibrium. In the absence of these data, various estimation methods can be used. Several of these methods have been illustrated in detail through the study of the effects of Sn, Zn and Au on the Ag-Cu eutectic temperature, and of the effects of Si on the peritectic and eutectoid temperatures of the Fe-C system. At least on a semiquantitative basis, the results are in very satisfactory agreement with data in the literature.     

The Influence of Support Rollers of Continuous Casting Machines on Heat Transfer and on Stress‐Strain of Slabs in Secondary Cooling

The processes of solidification and heat extraction are important for the continuous casting of steel. In this work, investigations on the influence of support roller contact on solidification in a strand of a slab caster, such as surface temperature and strand shell growth, and on thermal strain and stress in the slab have been carried out. The results show that roller contact has an influence on the solidification of steel and on the thermo‐mechanical behaviour of the strand.     

Numerical Study of Scale Effects on the Stiffness Modulus of Rock Masses

The purpose of this paper is to contribute to the study of scale effects on the stiffness modulus of discontinuous rock masses from a mechanical point of view. The study has been conducted on the basis of the observation that the length and density of the natural discontinuities (cracks) in rock masses increase with the volume of the mass. Compressive tests on specimens containing open and closed flat cracks have been simulated through a numerical procedure that is based on the displacement discontinuity method and the fictitious stress method. Cracks have been generated, through a random process, with dips in the 0°–180° range. Both open and closed cracks have been considered. The numerical results obtained for specimens containing open cracks are found to approach the values obtained through an analytical solution. Then, the numerical method has been applied to the study of scale effects on the stiffness modulus of specimens with closed cracks. The numerical results show a decrease in the stiffness modulus with an increase in the size of the rock volume.     

钢管混凝土提篮拱桥静力稳定的参数分析

采用三维空间杆系模型对主跨108m提篮拱桥的稳定性进行了研究。通过对影响一类稳定安全系数的各参数研究，提出影响此类拱桥稳定性的主要因素，为其合理、安全的设计提供参考依据。     

Promotion of breast feeding: effect on neonates of change of feeding routine at a maternity unit

The effect on the health of neonates of a change in neonatal routine care, including general rooming-in, breast feeding on demand and avoidance of supplementary bottle feeding was studied in conjunction to a breast feeding campaign at a maternity unit. There was an accentuated weight loss in the neonatal period during ad libitum breast feeding. The mean serum bilirubin of clinically jaundiced infants was slightly higher on a 4-hourly feeding schedule with supplementary bottles than on the new regimen. There was a similar high (32-33%) incidence of bilirubin levels greater than 205 mumol/l (12 mg/100 ml) in both groups. The incidence of spontaneous hypoglycaemia did not differ in the two groups. The new feeding regimen was thus considered safe. Infants at risk for hypoglycaemia were given supplementary bottles and were excluded from the study.