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.     

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。     

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。     

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;…     

影响油雾润滑系统油耗主要因素的探讨

对油雾润滑机理的阐述 ,说明了油雾润滑具有的特点 ;对影响油雾润滑系统中油耗量的主要因素进行了全面的分析 ,通过实测大量的数据绘制出油耗量与各参量之间的关系曲线 ,并且得出了相关的重要结论     

降低循环洗油消耗的技术措施

塔后煤气夹带洗油、洗油变质、油水分离器跑油等是影响循环洗油消耗的主要原因。为此对粗苯系统进行适应性改造 ,并加强油水分离器的操作 ,使每吨轻苯洗油消耗由 10 2 kg降至 80 kg以下 ,降低操作费用 40万元 /a。     

柴油机高压油泵的正确检查和调整

通过介绍高压油泵柱塞偶件、喷油定时、供油量的检查及调整,指出了国内外柴油机高压油泵的不同和正确检查、调整高压油泵的方法及应注意的问题。     

铜精炼反射炉节能技术的探讨

分析了铜精炼反射炉能源利用的特点 ,采用重油自动掺水技术、重油乳化、改进重油加热方式、双还原管喷油等技术措施 ,进行铜精炼反射炉的节能研究     

空压机废油收集器的改进

空压机运行中形成的废油，由于收集较困难，不仅浪费了能源，而且会造成较严重的环境污染。对原来普遍采用的废油收集方法进行了分析，着重介绍了改进后的废油收集器的结构、工作原理和使用效果。     

TYZX高黏度自动净油系统在宁钢1780mm热轧线的应用

针对热轧厂1 780mm油膜轴承润滑系统润滑油含水量高(5%～10%),难以分离,以及油中气泡、杂质含量大等问题,采用TYZX高黏度自动净油系统对一用一备的两个65 m3油箱的净油系统进行了改造,实现了自动控制、水分检测、油温控制、过滤、油水自动分离等功能,提高了润滑油油品的清洁度,延长了润滑油的使用寿命,为油膜轴承及润滑系统的安全、稳定运行提供了良好条件,为企业带来了明显的经济效益。     

Estimating the Oil Droplet Size Distributions in Deepwater Oil Spills

Oil released in a deepwater blowout breaks up into droplets. Hence, the time it takes for oil to reach the water surface, its location, and the size of the surface slick at a given time, are all affected by oil droplet sizes. Information on oil surfacing time, its location, and slick size are essential for emergency spill response as well as contingency planning. Despite the importance of the oil droplet size on oil fate in many oil spill problems, our ability to estimate oil droplet sizes has been poor. In this paper, methods are developed for a deepwater oil spill model to estimate the oil droplet size distribution generated due to an accidental release. Models for estimating oil droplet size distribution generated by a deepwater release are developed based on the maximum entropy formalism. The quality of results depends on the constraint equations used. The paper shows results using only the mass balance and specific surface area as constraint equations. The latter case showed markedly improved results. Model results for droplet size distribution are compared with limited experimental data.     

Development and Application of Oil Spill Model for Singapore Coastal Waters

This paper presents the development and application of a three-dimensional oil spill model for predicting the movement and fate of an oil slick in the coastal waters of Singapore. In the model, the oil slick is divided into a number of small elements or grids for simulating of the oil processes of spreading, advection, turbulent diffusion, evaporation, dissolution, vertical dispersion, shoreline deposition and adsorption by sediment. This model is capable of predicting the horizontal movement of surface oil slick, the mass balance of oil spill and the oil particle concentration distribution in water body. Satellite images and field observations of oil slicks on the surface in the Singapore Straits, and measurements of the vertical concentration of oil particles in flume are used to validate the newly developed model. Compared with the observations, the numerical results of the oil spill model show good conformity.     

浅析立磨磨辊密封的设计与选用

介绍了立磨磨辊密封的作用与型式,以及磨辊油封的基本常识,重点提出了有关磨辊油封泄漏的一些因素,并介绍了立磨磨辊密封的典型设计及一些发展动态。     

A new method for seed oil body purification and examination of oil body integrity following germination

Plant seeds store triacylglycerols as energy sources for germination and postgerminative growth of seedlings. The triacylglycerols are preserved in small, discrete, intracellular organelles called oil bodies. A new method was developed to purify seed oil bodies. The method included extraction, flotation by centrifugation, detergent washing, ionic elution, treatment with a chaotropic agent, and integrity testing by use of hexane. These processes subsequently removed non-specifically associated or trapped proteins within the oil bodies. Oil bodies purified by this method maintained their integrity and displayed electrostatic repulsion and steric hindrance on their surface. Compared with the previous procedure, this method allowed higher purification of oil bodies, as demonstrated by SDS-PAGE using five species of oilseeds. Oil bodies purified from sesame were further analyzed by two-dimensional gel electrophoresis and revealed two potential oleosin isoforms. The integrity of oil bodies in germinating sesame seedlings was examined by hexane extraction. Our results indicated that consumption of triacylglycerols reduced gradually the total amount of oil bodies in seedlings, whereas no alteration was observed in the integrity of remaining oil bodies. This observation implies that oil bodies in germinating seeds are not degraded simultaneously. It is suggested that glyoxisomes, with the assistance of mitochondria, fuse and digest oil bodies one at a time, while the remaining oil bodies are preserved intact during the whole period of germination.