抓住时机、全力推进，加大海外资源开发力度——在赞比亚进行矿产资源开发的实践与探讨

赞比亚铜工业现状Copper industry in Zambia非洲是世界上资源十分丰富的大陆,素有"世界资源宝库"之称。世界上最主要的50多种矿产,非洲有17种储量居各洲第一。铬、锰、钴、钻石、黄金、铂、磷酸盐、铝土矿、铀、铜为非洲的优势矿产资源。此外,非洲的锑、铅、石棉、锂、钽、铍、铌的产量也名列世界前矛。     

本钢六西格玛走上自主培训之路

[本刊讯]9月25日，由钢铁企业总工程师协会主办、本钢承办的中国钢铁企业总工程师协会第八次会议在本钢金山宾馆召开。来自中钢集团和本钢、首钢、武钢、马钢、太钢、唐钢、包钢、攀钢、邯钢、沙钢、济钢、莱钢、南钢、安钢、宣钢、北京冶金规划院17家钢铁企业的总工程师、副总工程师，以及相关职能部门负责人和本钢部分厂矿领导参加会议。集团公司副总经理、总工程师许家彦主持会议。本次会议的主题是发挥科技优势，应对金融危机。     

焦作科技新起点——焦作市科技局引导企业与北京高校科技项目嫁接

6月13日．由焦作市科技局举办的科技项目发布会在焦作市委、市政府的支持下顺利召开。此次会议邀请了清华大学、北京大学、北京科技大学、北京航空航天大学、北京工商大学、北京理工大学、北京化工大学、北京国杰老教授研究院、中国矿业大学、中国农业大学等十余所院校的34名教授亲临会议现场。发布的科技项目包括重工业、轻工业、有色金属工业、农业等在内的新技术、新产品、新工艺科研成果2000余项，现场签约27项。     

1997年钼业年评

评述了１９９７年世界钼的需求、供给和价格。特别概述了钼的新产品、新技术，诸如低合金钢、不锈钢、工具钢、轧辊、铸钢铸铁、涂膜、催化剂、润滑剂、颜料、缓蚀剂和镍氢电池等的研究与开发进展。     

江苏中兴化工设备有限公司(扬州市中兴硫酸设备厂)

正公司经营范围承接20-800kt/a硫铁矿制酸、硫磺制酸装置的设计、制造、安装、调试、开车及人员培训。金、铜、铅、锌、钼、镍烟气制酸装置的设计、制造、安装、调试、开车及人员培训。硫化氢烟气制酸全套工程。石膏制酸全套工程。低气浓SO_2非稳态转化制酸全套工程。电厂脱硫环保治理全套工程。磷酸、磷复肥全套工程。专业制造年产20-800kt/a硫酸焙烧炉、焚硫炉、文氏管、空塔、泡沫塔、填料塔、斜管沉降器、干吸塔、转化器、高效换热器、炉气过滤器等。     

波纹钢市场调查分析

波纹钢是一种具有坚固、耐用特性的经济断面钢材。广泛应用于公路、桥梁、隧道、交通设施、市政工程、水利水电工程、矿山井下通道、建筑工程、应急抢险工程等领域。我们到波纹钢设备生产厂家、波纹钢生产厂家及波纹钢行业管理协会进行了调查。本文就波纹钢的市场情况进行简单的介绍和分析。     

三钢某高炉烧结矿自动取制样检测系统设计

描述了一种多功能的烧结矿自动取制样检测系统。该系统集取样、缩分、制样、筛分、称重、配鼓、转鼓、数据分析、弃料处理等为一体，可自动完成烧结矿的随机、高频次取样及化学成分样制备与粒级、转鼓、筛分、抗磨等指数的检测工作。应用结果表明，该系统提高了烧结矿取制样的及时性、代表性及检测的准确性、可靠性。具有投资费用低、自动化程度高、运行环保可靠等优点。可供有条件、有需求的钢铁企业借鉴参考。     

2010年钢铁市场和贸易问题

美国国际钢铁协会是全美唯一真正推崇钢铁自由贸易的行业组织。美国国际钢铁协会代表北美钢材进出口商、生产商、分销商、加工商、港口部门、码头装卸公司、海关中介公司、货运代理人、远洋运输公司、铁路运输公司、公路运输公司以及银行等的利益。简而言之，代表的是钢铁供应链上所有的人。     

《甘肃冶金》来稿要求

正一、来稿应内容真实、立论正确、推理严密、数据准确可靠、文字精练、层次分明、章节编号前后统一、标点符号规范、图表清晰。二、稿件字数全文(包括图表、摘要、参考文献等)一般不超过6000字。来稿务必附上中英文对照的摘要(200~300字)、关键词(5~8个)及作者单位、邮编。中文摘要保持信息完整性,使读者通过摘要便能全面了解论文的主要目的、研究方法、结果与结论及创新之处。三、正确使用简化字和法定计量单位,文中的公式、计算单位、符号等应按国家标准或规范书写清楚。稿件请用电子文档传送。     

《工业炉》稿约

《工业炉》杂志是以报道国内外工业炉窑及热能工程技术领域的先进科技成果、新技术、新材料、新装置；生产及管理经验；行业活动和信息动态为主要内容的专业技术期刊。读者遍及机械、冶金、石油、化工、电子、汽车、陶瓷、建材、耐火材料、轻工、纺织、食品、制药、环保等行业。内容翔实，可读性强。     

提升计算机实验教学质量的探讨

从计算机实验教学的现实情况出发,分析了高校计算机实验教学的现状和存在的问题,探讨了提升计算机实验教学质量的方法和途径,阐明了计算机实验教学在高校教育中如何正确定位的问题.     

Comparing the effectiveness of different educational programs for patients with total knee arthroplasty

PURPOSE: To compare the effects of preadmission and postadmission educational programs for patients with total knee arthroplasty. DESIGN: Quasiexperimental study. SAMPLE: 60 total knee arthroplasty patients. METHODS: Subjects in the experimental group received preadmission preoperative teaching with an instruction booklet during a preoperative outpatient clinic visit. Upon admission to the hospital, they were presented with an educational video tape. The control group received only postadmission preoperative teaching with the same instruction booklet and no video. PREADMISSION AND POSTADMISSION: Preoperative anxiety level, knowledge about postoperative care, exercise performance and postoperative recovery were used as outcome measures. FINDINGS: The research results found: 1. there was no significant difference between the two groups in reduction of preoperative anxiety score: 2. the experimental group had a significantly higher knowledge level than the control group; 3. the experimental group performed exercise more regularly and correctly than those in the control group; 4. the experimental group had greater flexion of the operative knee joint than the control group. CONCLUSION: Preadmission teaching with a videotape program and a health manual for patients with total knee arthroplasty is recommended. IMPLICATIONS FOR NURSING RESEARCH: More indicators such as postoperative pain and patient satisfaction can be used to investigate the effectiveness of intervention. In addition, increasing the sample size is recommended for future studies.     

干式充填法采场铺垫隔离材料的选择及应用

使用干式充填采矿法回采作业时,为了把采下矿石与其下面的充填材料隔开,其间需要有一层隔离材料,以减少采矿损失和贫化。此种材料应具备强度高、成本低及可重复使用等特点。由于采场面积较大和不平整,河台金矿采用C7.5号水泥砂浆、按厚度0.15 m的规格构筑隔离层,综合效果良好。     

Frequent hypomethylation in Wilms tumors of pericentromeric DNA in chromosomes 1 and 16

RATIONALE AND OBJECTIVES: The purpose of this study was to test the effectiveness of resident-prepared, independent learning cases in teaching residents chest radiology. MATERIALS AND METHODS: Three 2nd-year residents (one each from the University of Wisconsin, the Oregon Health Sciences University, and the University of Michigan) prepared four chest radiology teaching cases each (total, 12 cases). Radiology residents from each institution were randomly divided into control (n = 30) and experimental (n = 35) groups. Residents from both groups took a pretest of 36 multiple-choice questions covering the material from the 12 teaching cases. Residents in the experimental group reviewed these cases independently, and both groups took the same test (posttest) immediately after the teaching cases had been reviewed and again 3 months later (final test). RESULTS: Test scores were similar across institutions (P > .05) but differed across time and treatment groups (experimental vs control) (P < .0001). Mean differences in test scores between the experimental and control groups at pretest, posttest, and final test were -0.4, +9.0, +4.0, respectively, demonstrating increased performance at posttesting that was still present (though somewhat attenuated) 3 months later at final testing. CONCLUSION: Independent study of resident-prepared chest radiology teaching cases increases the resident's knowledge for as long as 3 months after instruction.     

控制铝铸轧板坯中凸度的研究

铝铸轧板坯中凸度作为铸轧板坯板型的一个重要指标，对后续冷轧生产中的板型控制有着较为重要的影响，通过一系列生产试验，研究铸轧辊、产品规格、合金成分及铸轧参数对铸轧板坯中凸度的影响。     

Pressure leaching of a lead-zinc-silver concentrate with nitric acid at moderate temperatures between 130 and 170 °C

The aim of this investigation was to study the oxidative leaching of lead and silver from a lead-silver concentrate containing galena, sphalerite, pyrite and argentite in nitric acid solutions above the melting point of sulfur (119 °C). The elemental sulfur formed was expected to agglomerate, thereby slowing its oxidation to sulfate and inhibiting the precipitation of lead and silver sulfate.The experimental conditions employed 0.13-0.65 M nitric acid, which is 3 to 15 times the stoichiometric amount needed to form sulfur, at temperatures between 130 and 170 °C. Higher acid concentrations have a favorable effect on silver and lead dissolution at 130 °C with about 90% Ag and 80% Pb extracted into 0.65 M nitric acid within 90 min. However, an increase in temperature caused a decline in the extraction of both metals, due to the greater amount of sulfate produced. Pyrite was found to oxidize directly to akaganeite and sulfate ion and promotes the formation of plumbo- and argento-jarosite. X-ray diffraction analyses of the leach residues show the presence of anglesite (PbSO₄), plumbo-jarosite (PbFe₆(SO₄)₄(OH)₁₂), elemental sulfur (S-β) and akaganeite (FeO(OH)). Enhanced silver extraction was obtained when the oxidation was carried out in the presence of citrate ion which was added to complex with lead and silver ions.     

冶金企业建立职业安全卫生管理体系的必要性和可行性分析

介绍了职业安全卫生管理体系的内容、基本思想和作用 ,并就冶金企业建立职业安全卫生管理体系的必要性和可行性进行了分析     

USSR: optimizing the teaching of health education in higher medical training institutions

The promotion of medical and health knowledge among the population is an integral aspect of the work of all physicians in the U.S.S.R. The coordination of different aspects of teaching on health education within the general training of the future physician is particularly important. A comprehensive interdisciplinary study was conducted by the Central Institute for Scientific Research in Health Education in several medical schools during the last 5 years in order to develop the preparedness of medical students for their future activities in health education. An experimental method on the "involvement of subjects in real-life situations" was used to evaluate the subjects' degree of preparedness. The experiment included 469 6th year medical students from 5 schools in the country. The results revealed that the students possessed a sufficient volume of knowledge in the field of health education, but the majority were unable to apply this knowledge in medical practice since they were not convinced of its necessity. An experimental educational scheme based on the findings of pedagogical and psychological studies aimed at improving teaching methods was worked out. The experimental training program included the development of scientific thinking, drawing up of a specially designed system of exercises for use as a teaching tool in developing the required intellectual skills, and application of programmed learning. The training scheme was experimentally tested with 211 students from the same 5 medical schools; the control group consisted of 235 students. The experimental training considerably improved the preparedness of students for health education activities. Most of the subjects developed the ability to act in various situations of medical practice and to select and apply proper educational treatment. This had not been the case before training. In the control group no significant difference was observed between the results obtained at the diagnostic stage and those of the control tests.     

可塑料在轨梁厂步进式加热炉施工中的应用

介绍了包钢轨梁厂步进式加热炉砌筑中耐火可塑料从施工准备、模具制作及支设、可塑料捣固、拆模、砖底及孔洞修整到膨胀缝的开设等全过程的一些施工方法及注意的问题，可对今后可塑料的施工起到一定的借鉴作用。     

Positioning of stroke patients: evaluation of a teaching intervention with nurses

BACKGROUND AND PURPOSE: There is agreement, although little evidence, that consistently positioning stroke patients in allegedly reflex-inhibiting positions is therapeutic and will enhance functional recovery. The nursing staff, therefore, needs to know and implement these postures and understand their potential underlying value. We examined nurses' knowledge of and practice in positioning stroke patients before and after a formal teaching intervention. METHODS: In a quasi-experimental study, 38 stroke patients and 59 nursing staff members (44 trained nurses and 15 healthcare assistants) from 6 wards were studied. The wards were randomly allocated to experimental or control status. Patients were assessed on entry into the study by use of a range of measures to establish group equivalence. Nineteen aspects of their position were documented at intervals throughout their stay with a previously developed observational tool. One thousand sets of observations of patient position were made. Using 2 questionnaires, the nurses' knowledge of the terminology used to denote posture and of issues relating to the moving and positioning of stroke patients was assessed before, immediately after, and 3 months after a package of formal teaching was implemented on the experimental wards. Nurse knowledge and patient position were used as the main outcome measures. RESULTS: Immediately after teaching, nurses in the experimental group scored significantly higher than those in the control group on the terminology questionnaire (P < 0.05) and the moving and positioning questionnaire (P < 0.001). Three months later, the experimental group scored higher on the latter questionnaire only (P < 0.005). The positioning of patients in the experimental group was improved overall after the teaching (P < 0.0005), and improvements to specific parts of the body were noted. CONCLUSIONS: It was possible to effect a degree of change in the nurses' knowledge of and practice in the positioning of stroke patients. However, the quality of patient positioning remained variable. More effective ways of improving positioning need to be developed. Only then can the effects of recommended positioning be evaluated.