共搜索到2448条信息，每页显示10条信息，共245页。用时：0小时0分0秒476毫秒
STUDY AND APPLICATION OF SILLIMANITE FLOTATION AGENTS方和平,罗亚田摘 要:<正>Abstract:This paper,starting from the study on the surface elec-the-property differences between sillimanite in some chinese mine and itsmain intergrown silicates,detailedly inquires into the mixing function offatty acids and hydrocarbon sulfonic acids collecting agents......
of structural differences resulting from alloy composition and annealing treatment.关键词:......
, leads tO formation of potential differences between them. Thispotential difference is opposite to the external electric field, resulting in decrease ofanode current and increase of corrosion......
内梅罗指数和地质累积指数在土壤重金属评价中的差异探讨--以小秦岭金矿带为例张江华1,赵阿宁1,王仲复2,柯海玲1,陈华清2(1.陕西省西安市地质调查局西安地质调查中心2.青海省水文地质工程地质环境地质勘查院)摘 要:内梅罗指数和地质累积指数广泛应用于土壤,沉积物等环境介质中的重金属污染评价,选择金矿开发区土壤中Hg,Pb,Cu,Cd,Zn 5种重金属,对比了两种方法的评价结果,统计分析各个样品的综合污染程度,区分不同方法评价的差异,并提出了形成差异的主要原因.关键词:重金属污染； 内梅罗指数； 地......
morphological changes and remineralized deposits were different from each other. EDX elemental analysis showed that there were significant differences in the Ca(wt%) and Ca:P molar ratio of the enamel layer among control and experimental groups. The Ca(wt%) and Ca:P molar ratio in NaF group were significantly higher than those of other experimental groups. There were no significant differences in P(wt......
observed may be attributed to different inclusion generation processes during melting. Despite differences in their cleanliness and total oxygen contents, the Si-and Al-deoxidized steels show similar VHCF lives. The factors causing fatigue failure in these steels reveal distinct differences. Calcium aluminate inclusions are responsible for the cracks in Al-deoxidized steel. By comparison, most fatigue......
taking into account discharge voltage on brittleness are shown. Differences between values of both a1(300) and a1(500)coefficients characterized susceptibility to coatings cracking of investigated......
that of the alloy without high pressure treatment after 1 GPa pressure treatment, and the higher the temperature is, the larger their differences are.关键词:......
that there are notable differences in fracture strength, elongation at break and hydrophilicity between rolled and electrodeposited copper foils. The rolled copper foils have higher tensile strength, lower......
. Through the Callaway model, it demonstrates that Sm and S co-doping induces strong mass differences and strain field fluctuations in Cu3 SbSe4. The results prove that doping with suitable elements can......
