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Baca selengkapnya2018-7-19 · CsPbX 3 (X = Cl, Br, I) perovskite quantum dots (QDs) represent bright and tunable photoluminescence, it is regrettable that the air instability and poor water resistant properties prevent their application in optoelectronic devices. At the same time, the toxicity of lead is also a major factor restricting its development. As a consequence, we demonstrate the partial replacement of Pb with Mn ...
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Baca selengkapnyaExcessive reactive oxygen species Revised abstract, especially superoxide anion (O₂•-), play important roles in the pathogenesis of many cardiovascular diseases, including hypertension and atherosclerosis. Superoxide dismutases (SODs) are the major antioxidant defense systems against (O₂•-), which c …
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Baca selengkapnya2014-2-23 · Soil and Applied Manganese A2526 E.E. Schulte and K.A. Kelling Manganese (Mn) deficiency and toxicity have been noted in Wisconsin on various soils. The amount of manganese in rocks and soils varies greatly. Some soils may have as much as 3,000 parts per million (ppm)
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Baca selengkapnyaThis work demonstrates that certain Lewis and Brønsted acids can sharply improve the oxygen transfer efficiency of a manganese(II) catalyst bearing non-heme ligand. In the absence of Lewis and Brønsted acids, oxidation of manganese(II) complex will generate di-μ-oxo-bridged dinuclear Mn 2 (III,IV) core which is very sluggish for olefin ...
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Baca selengkapnyaThe purpose of this study is to evaluate the dietary intakes of calcium (Ca), phosphorus (P), magnesium (Mg), iron (Fe), zinc (Zn), copper (Cu), and manganese (Mn) and investigate their correlation with blood pressure and blood lipids. Targeting 258 healthy men and women, blood pressure was measured …
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Baca selengkapnyaManganese processing plant. Manganese is essential to iron and steel production by virtue of its sulfur-fixing, deoxidizing, and alloying properties. Steelmaking, including its iron making component, has accounted for most manganese demand, presently in the range of 85% to 90% of the total demand. Among a variety of other uses, manganese is a ...
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Baca selengkapnya2017-9-1 · Thus the Brønsted-acid-promoted efficiency of manganese complex mediated olefin epoxidation is significantly dependent on the acidic strength of Brønsted acid, that is, stronger Brønsted acid such as HOTf (pK a, −14.7) and HClO 4 (pK a, −10.0) demonstrates stronger promotion effect comparing with the cases of weaker Brønsted acid such ...
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