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在新的《中国标准化》杂志社重组之际,本刊记者采访了国家质检总局党组成员、国家标准化管理委员会主任纪正昆。纪正昆主任(以下简称纪主任)就近年来我国标准化工作所取得的成绩和今后一个时期我国标准化工作的思路和重点等广大读者关心的问题,回答了本刊记者的提问。 相似文献
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<正>4月8日,中国标准化杂志社编委会会议暨2015年年会在北京汉能控股集团召开,中国标准化协会理事长、中国标准化杂志社编委会名誉顾问纪正昆,中国标准化研究院院长、编委会主任马林聪,国家质检总局新闻办里新,国家标准委办公室主任邓志勇等出席会议并讲话,来自中国标准化杂志社编委会和理事会成员等70多人出席了此次会议,会议由马林聪院长主持。中国标准化协会理事长纪正昆对杂志社编委会提出明确要求,他说:我们现在遇到了一个非常难得的发展机遇,杂 相似文献
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Optical properties of the metals Al, Co, Cu, Au, Fe, Pb, Ni, Pd, Pt, Ag, Ti, and W in the infrared and far infrared 总被引:5,自引:0,他引:5
Infrared optical constants collected from the literature are tabulated. The data for the noble metals and Al, Pb, and W can be reasonably fit using the Drude model. It is shown that -epsilon1(omega) = epsilon2(omega) approximately omega(2)(p)/(2omega(2)(tau)) at the damping frequency omega = omega(tau). Also -epsilon1(omega(tau)) approximately - (1/2) epsilon1(0), where the plasma frequency is omega(p). 相似文献
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通过优化微波消解条件,并根据不同元素性质,调谐ICP-AES工作条件至最佳,实现了茶叶中K、Na、P、S以及Fe、Mn、Cu、Zn、Ca、Mg 10种元素的同时测定。10种元素测定结果 RSD%为0.67(Cu)~5.57(Na),回收率为84.0%(Na)~101.5%(Fe),检出限为0.001(Mn)~0.029(S)μg·g-1,表明该方法准确可靠,能够满足茶叶中K、Na、P、S、Fe、Mn、Cu、Zn、Ca、Mg分析要求。 相似文献
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Vilas G. Pol Swati V. Pol Aharon Gedanken 《Advanced materials (Deerfield Beach, Fla.)》2011,23(10):1179-1190
This review compiles various nanostructures fabricated by a distinct “dry autoclaving” approach, where the chemical reactions are carried out without solvents; above the dissociation temperature of the chemical precursor(s) at elevated temperature in a closed reactor. The diversity to fabricate carbides (SiC, Mo2C, WC), oxides (VOx‐C, ZnO, Eu2O3, Fe3O4, MoO2), hexaborides (LaB6, CeB6, NdB6, SmB6, EuB6, GdB6), nitrides (TiN, NbN, TaN), phosphides (PtP2, WP), sulfides (ZnS, FeS/C, SnS/C, WS2, WS2/C), and selenides (Zn1‐xMnxSe/C, Cd1‐xMnxSe/C), with various shapes and sizes is accounted with plausible applications. This unique single‐step, solvent‐free synthetic process opens up a new route in the growing nanomaterials science; owing to its considerable advantages on the existing approaches. 相似文献
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Istomina E. I. Istomin P. V. Nadutkin A. V. Grass V. E. Ermakova D. A. 《Inorganic Materials》2022,58(6):594-603
Inorganic Materials - This paper reports on vacuum carbosilicothermic reduction of zirconium(IV), hafnium(IV), vanadium(V), niobium(V), tantalum(V), and chromium(III) oxides at a temperature of... 相似文献
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Compounds Ba2AIIUO6 (AII = Mn, Fe, Co, Ni, Cu, Zn, Cd, Pb) were synthesized by high-tem-perature solid-phase reactions. Their structures and properties were studied by X-ray diffraction, IR spec-troscopy, and reaction calorimetry. 相似文献
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介绍了采用ICP-AES测定超高强度钢中Mn,Si,Al,Ti,Nb,La的方法.研究了超高强度钢中基体元素,常见元素对六种杂质元素分析谱线的光谱干扰情况;选择了合适的分析谱线;工作曲线线性良好;根据钢中共存元素的含量范围,进行了加入回收实验和精密度、准确度实验,测量结果满足分析要求. 相似文献