黑龙江省金龙达经贸有限责任公司

公司成立2002年,公司位于哈尔滨市南岗区中山路258号,企业类型为有限责任公司,经营范围：购销冶金矿产品,冶金炉料,焦炭,生铁,铁合金,金属材料,钢材,有色金属不含稀有金属,化工产品不含危险品,剧毒品,建筑材料,机械设备,炭素材料及石墨制品。     

Study on photodegradation of Azo dye by polyoxometalates/polyvinyl alcohol

A series of photocatalysts, K11[Ln(PW11O39)2]/PVA (Ln=La, Ce, Pr, Nd, Sm) were prepared by K11[Ln(PW11O39)2] (Ln=La, Ce, Pr,Nd, Sm) containing five kinds of lanthanides and polyvinyl alcohol as the support. The catalysts obtained were characterized by Fourier trans-form infrared spectra, UV-vis spectra, powder X-ray diffraction, and scanning electron microscopy, indicating that the structure of K11[Ln(PW11O39)2] and polyvinyl alcohol remained intact, respectively. The photocatalysts exhibited efficient catalytic activity to degrade methyl orange, Congo Red, Ponceau 2R. The maximal degradation conversions of the three kinds of dyes were 99.58%, 47.61%, 72.42%, respectively.     

家长义工：香港校园别样的景致

在香港校园里,常常有这么一群特殊的人,她们每天早早地来到学校,为学生测量体温,观摩学校早会,协助管理图书,课余为学生讲故事,中午帮学生盛饭,甚至为学校编辑刊物,放学为低年级学生辅导作业……俨然是学校的正式教师,其实是学生家长,她们为学校,帮老师做了很多事情,都是义务的,没有任何报酬,在香港,通常把她们称之为“家长义工”。     

Mn(Ⅱ)-EDTA电位滴定铜的催化指示电极及其应用研究

提出了在氨三乙酸(NTA,活化剂)存在下,以Mn(Ⅱ)催化NaIO4氧化结晶紫的反应指示滴定终点,以自制的结晶紫选择性电极为指示电极,Mn(Ⅱ)为滴定剂,EDTA为阻抑剂,催化滴定测定微量铜的新方法.该方法对试剂用量,酸度,温度,滴定剂浓度,滴定速度及干扰消除等进行了探讨,选择了适宜的实验条件.用于火药中微量铜的测定,样品平均回收率为98.17%,相对标准偏差为1.02%,结果与原子吸收光谱法测定结果相符.     

江西铜业：期待矿铜产出

业绩略低于预期第三季度公司实现营业收入1471394万元,同比上涨30.67%,净利润91950万元,同比下降26.9%,每股收益0.30元,前三季度实现营业收入4154476万元,同比上涨45.46%,净利润369876万元,同比增长13.76%,每股收益1.22元,业绩略低于市场的普遍预期。     

铅市分析

11月份以来,LME三个期铅价基本上单边下行,跌至近1150美元,接近10月下旬低点。后市走向,初步分析如下:利空因素:宏观经济陷入收缩或衰退,对铅消费影响最大的汽车行业,同样面临危机。铅消费需求毫无疑问已处于衰减之中。供应来看,一是冶炼厂,中国10月份同比增产21.17%,且从本公司铅精矿进口贸易来看,原料供应充足,因此,近期大量减产的可能性不大。二是近期库存,LME库存持续减少,目前仅4万吨多点,但中国有大量商业库存,且LME库存低的主要原因也是中国出口近零水平所致。     

火焰原子吸收光谱法测定高纯金锭中铜、银、铁、铅、铋、锑

提出了用火焰原子吸收光谱法测定金锭中Cu,Ag,Fe,Pb,Bi,Sb的方法。用乙酸乙脂萃取分离金,水相浓缩后测定6种待测元素,方法的检出限:Cu,Ag,Fe为0.021mg/L,Pb,Bi,Sb为0.24mg/L;回收率94%～106%;RSD小于10.6%。该方法快速、简便,样品用量少,测定结果与ICP AES法和国家标准方法一致。     

人物介绍

中国共产党优秀党员,中国工程院资深院士,国家一级教授,中南大学学术顾问,中国粉末冶金学科奠基人,原中南矿冶学院副院长,原湖南省科协主席,国际著名的材料科学及冶金学家、教育家黄培云同志因病医治无效,于2012年2月6日10时10分在长沙     

理事 张松江

张松江,男,1964年11月生,中共党员,大学本科,冶金高级工程师,铝电解高级技师,现任河南中孚实业股份有限公司副总经理。     

荧光光谱仪在型铁分析中的应用

型铁中Ｓｉ,Ｍｎ,Ｐ,Ｓ四大元素的测定是型铁质量评价的主要内容。以往化学法分析Ｓｉ,Ｍｎ,Ｐ,Ｓ四大元素,劳动强度大,工序繁琐,偶然误差因素多,分析周期长,准确度低。近年来,Ｘ射线荧光光谱仪在冶金、地矿、水泥等分析应用方面,得到迅速发展,它具有自动化程度高,操作简单、快速、准确、非破坏性等优点,本文应用３５３０荧光光谱仪,分析型铁中的Ｓｉ,Ｍｎ,Ｐ,Ｓ四大元素,取得了成功,方法简单、准确、快速。１实验部分１.１仪器和试剂３５３０Ｘ射线荧光光谱仪（日本理学）,Ｒｈ靶,端窗Ｘ射线管;ＰＲ—１０气体;…     

预热烘烤对钢包热行为的影响研究

结合H钢厂的实际情况,采用有限元分析法对新钢包温度场进行研究,进而采用ANSYS数值模拟软件对钢包从烘烤至周转过程进行了数值模拟,重点分析了预热烘烤对新钢包热状态及钢水温度的影响,并进行了试验验证。结果表明:新钢包预热烘烤25 h虽然达到红包状态,且包壁温度趋于热饱和,但是包底仍有蓄热升温空间,周转后钢包造成钢水的最大温降约10℃;预热烘烤55 h后,钢包整体趋于热饱和,周转后钢包造成钢水温降不到1℃,因此可知理想的预热烘烤时间为55 h,为炼钢厂钢包烘烤制度及出钢温度制度的制定提供了参考。     

试论股份制对国有企业改革的作用

文章通过分析国有企业改革的现状及其存在的问题,提出要增强公有制经济的活力,必须实现投资多元化.股份制作为公有制的主要形式,在推进国有企业改革进程中起着至关重要的作用.     

Testimony before the Senate Subcommittee on Constitutional Rights of the Committee on the Judiciary.

The Statement for the American Psychological Association before the Subcommittee on Constitutional Rights of the Committee of the Judiciary of the Senate, reprinted here, is a substantial share of the entire testimony given on behalf of the APA. It was read by the Executive Officer on June 8 before the Subcommittee on Constitutional Rights of the Committee of the Judiciary. There followed a long period of questioning which the psychologists present felt was genuinely sympathetic or directed by an honest search for information. Representatives of other professional organizations shared the feeling that this was a serious fact-finding committee which gave a good reception to APA's testimony. The APA statement was prepared after consultation with officers of the Association, members of the Board of Directors and other committees, and with the appropriate staff persons. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

精密轧辊磨床磨削缺陷诊断方法的研究

结合磨床管理与维修工作实践,对轧辊磨床磨削过程中造成的轧辊表面的磨削缺陷的诊断方法进行了研究,提出了一种基于相对振动与绝对振动相结合的高效磨削缺陷诊断方法,并以实例介绍了应用此方法所取得的良好效果。     

Comments on the Report of the Committee on Subdoctoral Education for Psychological Technicians.

These brief comments, elicited by the next-to-last sentence of the challenging report of the Committee (Amer. Psychologist, 1955, 10, 541-545), bear on matters of concern to all members of the APA. In the kind of practical services I have been rendering since the century's first decade, often referred to as the psychoclinical examination of educationally and mentally retarded and maladjusted school children, the conclusion was early reached that two levels of functioning and training are required in the field of psychological examination and diagnosis. I still hold to the practical necessity of such a dichotomy, at least in public school systems. I am with the Committee in its effort to elevate the certification standards for examiners and to safeguard the professional status of practicing pyschologists, who should have a status comparable to that of a physician; but the psychologist needs technical assistants, just as the physician does. The Committee's suggestion that subdoctoral examiners be denominated "psychological technicians" may be satisfactory for certain kinds of positions, but it is less satisfactory for public school examiners. For these, I have used the term "psychoeducational examiner" since adopting the term "psychoeducational clinic" in 1912. I question the propriety of abandoning the master's degree in psychology for one year of graduate work. It is just as desirable to encourage students to spend a graduate year in psychology for general or cultural purposes, as in English, history, social science, or chemistry. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

钢球尺寸对半自磨-球磨系统产能的影响研究

本文基于云南某锌锡铜多金属选矿厂产能提升的需要,采用JKSimMet软件平台上的流程模拟方法研究不同钢球尺寸对半自磨-球磨回路产能的影响,提出合理可行的磨矿回路优化技术方案,为选矿厂产能的提升提供了科学依据。     

流体理化特性对土体渗流规律影响研究进展

土体渗流规律对工程建设和安全生产至关重要,渗透特性影响因素研究是岩土工程的热点问题。流体在土中的运动规律与土体自身性质、流体的理化性质、弥散和对流等密切相关,是土体液固相互作用的结果。文中基于流体理化特性,结合土体渗透性能的相关研究,分析了流体的化学组成、浓度、pH值和温度等因素对土体渗流规律的影响及内在机理。流体主要通过改变土体的微细观结构、双电层厚度、结合水含量、产生化学势等方式对土体的渗透特性产生影响。文中对土体液固相互作用研究进行了展望,可为相关工程实践提供参考。      

液压剪常见事故分析

阐述了连铸机液压剪常见的事故，通过分析，对装配结构进行了合理化改造，使液压剪事故率大幅度降低。对液压剪的使用有一定的借鉴。     

气雾化工艺参数对金属粉末粒度影响的研究

气雾化生产金属粉末是一个复杂的过程，它涉及气体动力学、流体力学、冶金热力学等许多方面的知识，因而影响因素较多。从雾化工艺参数方面出发，研究了其对粉末粒度的影响，为工业生产提供了有益的参考。     

Therapeutic information on the Internet

The internet provides a vast array of information accessible to anyone with a personal computer, a modem, and an internet account. It can be difficult to locate appropriate sites and determine their utility. This article provides a point-in-time sampling of the internet for therapeutic information. The URL for sites are provided along with a brief review of the content and its applicability to veterinary therapeutics.