نتایج جستجو برای: mno
تعداد نتایج: 1787 فیلتر نتایج به سال:
We report a pervasive phenomenon of gradual emergence negative magnetization in typical $R_{1-x}D_x$MnO$_3$ orthorhombic perovskite manganites nano form (with $R^{3+}$ being trivalent high-magnetic-moment ion from the heavier rare-earth elements Gd, Tb, Dy and $D^{2+}$ refers to divalent alkaline Sr, Ca, etc.), while bulk manifests no magnetization. Extensive studies have been carried out Gd$_{...
A non-viral gene delivery nanovehicle based on Alkyl-PEI2k capped MnO nanoclusters was synthesized via a simple, facile method and used for efficient siRNA delivery and magnetic resonance imaging.
Cu- and Mn-bearing tourmalines from Brazil and Mozambique were characterised chemically (EMPA and LA-ICP-MS) and by X-ray single-crystal structure refinement. All these samples are rich in Al, Li and F (fluor-elbaite) and contain significant amounts of CuO (up to ~1.8 wt%) and MnO (up to ~3.5 wt%). Structurally investigated samples show a pronounced positive correlation between the distan...
A Monte Carlo Exchange technique is used to study the thermodynamic properties of MgO-MnO nanoparticles ranging in size from 1728 to 21,952 ions. The solubility of Mg(2+) is much greater in MnO than the reverse, reflecting the difference in size between the two cations. The solubility, for a given temperature, diminishes with nanoparticle size. As the Mn concentration is progressively increased...
Plant-derived pyrrolizidine alkaloids play an important role in the biology of the salt marsh moth, Estigmene acrea (Lepidoptera: Arctiidae). They are phagostimulants for larvae and they stimulate the growth and development of adult male androconial organs called coremata. In this study, we have shown that the pyrrolizidine alkaloid monocrotaline N-oxide (MNO) fed to larvae also affects the cou...
Conversion-type anode materials hold great potential for Li+ storage applications owing to their high specific capacity, while large volume expansion and poor electrical conductivity limit rate cycling performances. Herein, a bimetal ZnMn-based metal-organic framework (ZnMn-MOF) is engineered in situ conversion of MnO-encapsulated porous carbon (MnO/PC) composite. The templating activation effe...
در این پژوهش، نمونه‌های کامپوزیتی Al-Mn+Al2O3+MnAl6 به روش ریخته‌گری گردابی با استفاده از مواد اولیه‌ی Al و MnO2 تولید شده و سپس ریزساختار و خواص مکانیکی آن مورد مطالعه قرار گرفته است. به این منظور نمونه مخلوط پودری Al و MnO2 به نسبت وزنی در یک آسیا همگن سازی شده و به میزان 1، 3، 4 و 7 درصد وزنی به همراه 5 درصد وزنی منیزیم به عنوان عامل اف...
Manganese oxides are one of the most important groups of materials in energy storage science. In order to fully leverage their application potential, precise control of their properties such as particle size, surface area and Mn (x) (+) oxidation state is required. Here, Mn3O4 and Mn5O8 nanoparticles as well as mesoporous α-Mn2O3 particles were synthesized by calcination of Mn(II) glycolate nan...
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