A copper foil for printed circuits including a thermal oxidation-resistant treated layer (e.g., Zn--Ni or Zn--Co alloy plating) formed on the shiny side of the foil and a Cr-base anticorrosive treated layer (e.g., chromate film, mixed film of chromium oxide and zinc and/or zinc ...
OBJECTIVE: To test the hypothesis that daily supplementation of zinc and copper mixed with the oral rehydration solution (ORS) reduces the duration and the severity of acute diarrhea in children. METHODS: In a randomized, double blind, placebo controlled trial children aged 6 months to 59 months...
来源期刊 Soil Science 研究点推荐 DILUTE NEUTRAL SOLUTIONS SOIL COLLOIDAL ELECTROLYTES COPPER AND ZINC EXCHANGE 引用走势 1975 被引量:3 0关于我们 百度学术集成海量学术资源,融合人工智能、深度学习、大数据分析等技术,为科研工作者提供全面快捷的学术服务。在这里我们保持学习的态度,不忘初心,砥砺前行。了解更多...
zinc formate species is the principal intermediate that yields methanol during carbon dioxide hydrogenation. Comparing the kinetics of the zinc formate decomposition determined by time-resolved XAS with those of the FTIR experiments and SSITKA, we can clearly see the difference upon switch to pure ...
popularized the use of bronze (mixed in with tin) which ushered in theBronze Agefrom 2,500 BC to about 800 BC. Bronze is much harder, and it was used for many tools including weapons. Today, more than 400 copper alloys are in use, including brass which is when zinc is added to the...
changes. Consequently, it is ductile and possesses a high level of electrical andthermal conductivity, making it attractive for a wide range of ornamental and practical applications. With cold-working, copper becomes harder, but it can be made soft again with the heat treating process known as ...
Precise analysis of copper and zinc isotopic compositions by plasma-source mass spectrometry 喜欢 0 阅读量: 90 作者:Marechal,C. N.,Telouk,P.,Albarede,F.摘要: The stable isotope geochemistry of Cu and Zn is poorly known because of the lack of a suitable analytical technique. We present a ...
Bioavailability of Copper and Zinc in Soils Treated with Alkaline Stabilized Sewage Sludges 来自 ResearchGate 喜欢 0 阅读量: 94 作者:YM Luo,P Christie 摘要: A glasshouse experiment was conducted to determine the bioavailability of Cu and Zn in a sandy loam and a clay loam. Spring barley (...
Synthesis, characterization and biological studies on unsymmetrical Schiff-base complexes of nickel(II), copper(II) and zinc(II) and adducts with 2,2′-dip... A series of metal(II) unsymmetrical Schiff-base complexes, {M(C10H6OCH:N(CH2)2N : C(CH3)CH : C(CH3)O), where M=...
The presence of returned sludge liquors, high in settleable solids, to the mixed liquor appears to moderately enhance the percentage removal of copper and zinc. Membranes used in place of secondary sedimentation also enhance removal of both metals by reducing effluent suspended solids. It is ...