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加入WTO使江西有色金属工业面临着严峻的考验。既有机遇也有挑战。结合江西有色金属工业的发展现状,本文着重分析了入世后给江西有色金属工业带来的机遇和挑战,并结合实际提出了应对WTO的主要对策。 相似文献
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根据江西有色金属工业发展的形势,着重分析了江西有色金属工业发展循环经济的必要性,并从体制、政策、法律、法规等方面提出了发展江西有色金属工业循环经济的思路,为引导江西有色金属工业循环经济的发展提供政策参考。 相似文献
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同志们: 目前,江西经济发展正处于非常关键的时期,江西经济已经进入高速发展阶段,在江西经济今后仍将高速发展的逼人形势下,有色金属行业怎么办?今天,我们召开全省有色金属工业工作会议,目的就是要深入贯彻落实党的十六大和省第十一次党代会精神,动员全行业特别是重点企事业单位,锁定目标,奋战2003,确保明年全省有色金属工业翻番,以适应全省大好形势的要求,让有色金属这个传统产 相似文献
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结合江西有色金属工业的发展现状,本文着重分析了入世后给江西有色金属工业带来的机遇和挑战,并结合实际提出了应对WTO的主要对策。 相似文献
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江西物华天宝。稀土资源举世瞩目。稀土,被人们称为“工业味精”。它早已广泛应用于钢铁冶金、有色金属、石油化工、玻璃陶瓷、国防尖端科学领域;稀土永磁材料,荧光粉及贮氢合金的开发应用,促进了稀土生产和应用的迅速发展。江西是我国南方淋积型稀土的主要产地,以其品位富、放射性比度低,备受世人青睐。江西稀土工业起步虽早,但发展缓慢,在80年代中后期,国内外稀土工业迅速发展阶段,江西同其他兄弟省份的稀土工业发展机遇失之交臂,拉开了差距。1995年,江西稀土矿产品产量7120吨,占全国的19.4%,冶炼加工产品产量2218吨,出… 相似文献
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江西素称“有色金属之乡”,是我国有色金属工业重要的生产基地之一。钨、铜等精矿产量一直占全国之首,还蕴藏着极其丰富的金、银、铅、锌、锡、稀土、钽铌等20多种有色金属。1993年底止,江西省银的保有储量居全国第一位,已探明的铅锌金属保有储量均超过300万t,锂的储藏、开采量居全国首位,黄金、稀土等有色金属储量也相当可观;其开采价值之高,已被实践证明并引起了国内外有色工业界的关注,从而为江西有色金属工业的发展提供了丰富的矿产资源保证。解放以来,江西省有色金属资源不断得到开发利用。尤其是党的十一届三中全会以来,国… 相似文献
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试验研究建立了同一试料溶液连续、同时测定铂饰品中各成分的分析方法。主体Pt以氯铂酸铵称量法及火焰原子吸收光谱(FAAS)法或电感耦合等离子发射光谱(ICP-AES)法测定滤液中残留Pt进行补差而测定。主成分Pd,Au,Ag,Cu和焊料成分Ni,Zn,Fe以FAAS法或ICP-AES法测定。其方法回收率分别为:Pt99.9%~100%;Pd99.3%~99.7%;Au99.5%~l01.5%;Ag98.0%~100%;Cu97.7%~99.3%;Zn98.0%~99.0%;Ni94.0%~105%;Fe95.0%~99.0%。实际试样分析时,各成分质量分数之和一般在99.12%~l01.2%之间,接近于100%,间接说明方法的可靠性。本法适用于Pt-Pd二元体系和Pt-Pd-Au-Cu多元复杂体系的铂饰品的破坏分析,可用于校正X荧光光谱法无损检测铂饰品的分析结果。 相似文献
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稀土金属中14种非稀土杂质的ICP-MS法同时测定 总被引:1,自引:0,他引:1
本文研究了用 ICP- MS仪器同时测定稀土金属中 Mg、Al、Ti、Cr、Mo、Mn、Co、Ni、Cu、Zn、Pb、W、Nb、Ta等 14种非稀土杂质。研究了各稀土基体对被分析元素的基体效应 ,选择了相匹配的内标元素。比较了标准曲线法与标准加入法的测定结果。确定了用内标元素校正基体效应及仪器漂移 ,以标准曲线法直接测定。进行了加料回收和精密度实验 ,回收率在 94%~ 113%之间 ,RSD<10 %。被分析元素的检出限为 0 .0 1~ 0 .2 0 ng/ m L,测定下限为1~ 2 0 μg/ g。 相似文献
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JC Leonard HL Drwinga CH Kim LH Toji PK Bender RA Mulivor JC Beck 《Canadian Metallurgical Quarterly》1997,46(3):530-534
The erm family of 23S rRNA adenine-N6-methyltransferases confers resistance to all macrolide-lincosamide-streptograminB (MLS) antibiotics, but not all MLS antibiotics induce synthesis of Erm methyltransferase with equal efficiency in a given organism. The induction efficiency of a test panel of MLS antibiotics was studied by using two translational attenuator-lac reporter gene fusion constructs, one based on ermSV from Streptomyces viridochromogenes NRRL 2860 and the other based on ermC from Staphylococcus aureus RN2442. Four types of responses which were correlated with the macrolide ring size were seen, as follows: group 1, both ermSV and ermC were induced by the 14-membered-ring macrolides erythromycin, lankamycin, and matromycin, as well as by the lincosamide celesticetin; group 2, neither ermSV nor ermC was induced by the 12-membered-ring macrolide methymycin or by the lincosamide lincomycin or the streptogramin type B antibiotic ostreogrycin B; group 3, ermSV was selectively induced over ermC by the 16-membered-ring macrolides carbomycin, chalcomycin, cirramycin, kitasamycin, maridomycin, and tylosin; and group 4, ermC was selectively induced over ermSV by the 14-membered-ring macrolide megalomicin. These data suggest that the leader peptide determines the specificity of induction by different classes of MLS antibiotics and that for a given attenuator, a major factor which determines whether a given macrolide induces resistance is its size. 相似文献
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MR Thompson R Venkatesan K Kuppusamy A Celik W Lin DK Kido EM Haacke 《Canadian Metallurgical Quarterly》1999,210(1):253-259
An insertable head gradient coil with a maximum gradient amplitude of 45 mT/m and a rise time of 150 musec along all three major axes was used to collect high-spatial-resolution, single-shot, spin-echo, echo-planar, diffusion-weighted magnetic resonance images with b values ranging from 0 to 2,200 sec/mm2. Improvements in spatial resolution allowed better visualization of large white matter tracts and their relation to adjacent anatomic structures. Excellent contrast and anatomic detail were revealed for most structures in the brain when a sufficient number of acquisitions were collected. 相似文献
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Agar dilution MICs of 10 agents against 410 non-Pseudomonas aeruginosa gram-negative nonfermentative rods were determined. MICs at which 50 and 90% of the isolates were inhibited, respectively, were as follows (in micrograms per milliliter): sparfloxacin, 0.5 and 8.0; levofloxacin, 1.0 and 8.0; ciprofloxacin, 2.0 and 32.0; ofloxacin, 2.0 and 32.0; D-ofloxacin, 32.0 and > 64.0; ceftazidime, 8.0 and 64.0; piperacillin with or without tazobactam, 16.0 and > 64.0; trimethoprim-sulfamethoxazole, 0.5 and > 64.0; imipenem, 2.0 and > 64.0. With the exception of those for Stenotrophomonas maltophilia, Burkholderia cepacia, and Alcaligenes faecalis-A. odorans, agar dilution MICs for all strains tested were within 1 dilution of inhibitory (bacteriostatic) levels as determined by time-kill methodology. 相似文献
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土壤无机污染物铅、铬、镉、汞、砷、锌、铜、镍这八大重金属,是一般土壤检测中的必检项目。金属元素在土壤中积累富集后,有可能通过雨水迁移,造成地下水,地表水污染,或者通过农作物进入食物链,进而影响食品安全和人体健康,因此,对这些元素的检测显得尤为重要。本文采用原子荧光光谱法对土壤中的金属元素进行测量,同时结合微波消解技术对样品进行处理,确保测量数据的准确性。 相似文献
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