نتایج جستجو برای: fe mn

تعداد نتایج: 109201  

2008
J. Pons

This paper intends to review the state-of-the-art in the field of ferromagnetic shape memory alloys different than Ni–Mn–Ga, developed in the ast years. It starts with the effects of additions of different fourth elements to Ni–Mn–Ga and continues with the review of other Heusler (or B2) i-based and Co-based alloy systems, like Ni–Mn–X, Ni–Fe–Ga, Co–Ni–Al and Co–Ni–Ga alloys. Finally, ferromagn...

2000
DEREK LOVLEY

Dissimilatory Fe(III) reduction is the process in which microorganisms transfer electrons to external ferric iron [Fe(III)], reducing it to ferrous iron [Fe(II)] without assimilating the iron. A wide phylogenetic diversity of microorganisms, including archaea as well as bacteria, are capable of dissimilatory Fe(III) reduction. Most microorganisms that reduce Fe(III) also can transfer electrons ...

Journal: :Dalton transactions 2010
Diana Visinescu Luminita Marilena Toma Joan Cano Oscar Fabelo Catalina Ruiz-Pérez Ana Labrador Francesc Lloret Miguel Julve

The preparation, crystal structures and magnetic properties of the heterobimetallic complexes of formula [Mn(III)(n-MeOsalen)(H(2)O)(mu-CN)Fe(III)(bpym)(CN)(3)]·mH(2)O with n = m = 3 (1) and n = 4 and m = 2 (2) [n-MeOsalen(2-) = N,N'-ethylenebis(n-methoxysalicylideneiminate) dianion and bpym = 2,2'-bipyrimidine] are reported. 1 and 2 are dinuclear neutral species where the cyano-bearing low-spi...

2009
Fei Zhou Gerbrand Ceder Rahul Malik

Phase diagram and electrochemical properties of mixed olivines from first-principles calculations. Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Using first-prin...

Journal: :Nihon eiseigaku zasshi. Japanese journal of hygiene 1990
Y Kitagawa O Wada

Six-week-old male Wistar rats were administrated the radioisotopes of five trace elements (iron, zinc, copper, manganese and iodine) intravenously in order to elucidate the significance of their pharmacokinetics by noncompartmental analysis. The mean residence time (MRT) and variance of residence time (VRT) increased in the order Mn, Cu, I, Fe and Zn. Neither MRT nor VRT indicated any statistic...

Journal: :Journal of environmental biology 2011
Ai-Qing Zhao Qiong-Li Bao Xiao-Hong Tian Xin-Chun Lu Jeff Gale William

A nutrient solution experiment was conducted to investigate the effect of Fe and Zn supply on Fe, Zn, Cu, and Mn concentrations in wheat plants. The experiment used a factorial combination of two Fe levels (0 and 5 mg l(-1)) and three Zn levels (0, 0.1 and 10 mg I(-1)). The supply of Fe (5 mg l(-1)) and Zn (0.1 mg l(-1)) increased plant dry weight and leaf chlorophyll content compared to the Fe...

Journal: :Inorganic chemistry 2011
Miguel Clemente-León Eugenio Coronado Maurici López-Jordà João C Waerenborgh

The syntheses, structures, and magnetic properties of compounds of formula [Fe(III)(5-Clsal(2)-trien)][Mn(II)Cr(III)(ox)(3)]·0.5(CH(3)NO(2)) (1), [Fe(III)(5-Brsal(2)-trien)][Mn(II)Cr(III)(ox)(3)] (2), and [In(III)(5-Clsal(2)-trien)][Mn(II)Cr(III)(ox)(3)] (3) are reported. The structure of the three compounds, which crystallize in the orthorhombic P2(1)2(1)2(1) chiral space group, presents a 3D ...

Journal: :iranian journal of toxicology 0
سعید زاهدی saeed zahedi young researchers and elite club, torbat-e heydarieh branch, islamic azad university, torbat-e heydarieh, iran. حسین واعظ زاده hossein vaezzade department of fisheries and environmental sciences, university of tehran, karaj, iran. مریم رفعتی maryam rafati department of natural resources, savadkooh branch, islamic azad university, savadkooh, iran. موسی زارعی دنگسرکی musa zarei dangesaraki msc.shahid rajaee sturgeon hatchery center, sari, iran.

background: iron, manganese, and aluminum are three abundant metals on earth and their concentrations have increased in aquatic environments as a result of natural and industrial activities. this study was undertaken to report the median acute toxicity (lc50) and accumulation of the sub-lethal concentration (10% 96-h lc50) of iron (fe), manganese (mn) and aluminum (al) in kutum (rutilus kutum) ...

Journal: :Journal of the American Chemical Society 2004
Cora E MacBeth Rajeev Gupta Katie R Mitchell-Koch Victor G Young Gerald H Lushington Ward H Thompson Michael P Hendrich A S Borovik

Non-heme iron and manganese species with terminal oxo ligands are proposed to be key intermediates in a variety of biological and synthetic systems; however, the stabilization of these types of complexes has proven difficult because of the tendency to form oxo-bridged complexes. Described herein are the design, isolation, and properties for a series of mononuclear Fe(III) and Mn(III) complexes ...

1998

A chromatographic method was developed for simultaneous determination of Fe(III), Fe(II), Mn(II), and other transition metals. A high-performance polymer-coated silica-based cation exchange column was used for the separation of metals from hydrochloric acid-extracted environmental samples. After separation, the metals were mixed with PAR [4-(2-pyridylazo)resorcinol] and passed through a superco...

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