نتایج جستجو برای: feo

تعداد نتایج: 1737  

Arefian Z, Dorostghol M Kessmati M Morovvati H Najafzadeh H

Background: Histological and histometrical effects of Fennel Essential Oil (FEO) on ovary structure were studied during postnatal development in female wistar rats. Materials and Methods: For this purpose, the female rats, after parturition divided in control, sham and experimental groups with equal number of female pups for each mother at random. Sham 1 and experimental 1 groups consisted of m...

Journal: :Physical review letters 2004
Anastasia P Kantor Steven D Jacobsen Innokenty Yu Kantor Leonid S Dubrovinsky Catherine A McCammon Hans J Reichmann Igor N Goncharenko

The complete elastic tensor of Fe0.94O (wüstite) has been determined to 10 GPa using acoustic interferometry at GHz frequencies inside a diamond-anvil cell. The soft mode (C44) elastic constant of FeO is reduced by 20% over the experimental pressure range. An unusual discontinuity in the pressure derivatives of C11 and C12 at 4.7+/-0.2 GPa corresponds to the pressure at which the onset of a mag...

Journal: :Physical chemistry chemical physics : PCCP 2013
Joshua J Melko Shaun G Ard Joseph A Fournier Jun Li Nicholas S Shuman Hua Guo Jürgen Troe Albert A Viggiano

The ion-molecule reactions Fe(+) + N2O → FeO(+) + N2 and FeO(+) + CO → Fe(+) + CO2, which catalyze the reaction CO + N2O → CO2 + N2, have been studied over the temperature range 120-700 K using a variable temperature selected ion flow tube apparatus. Values of the rate constants for the former two reactions were experimentally derived as k2 (10(-11) cm(3) s(-1)) = 2.0(±0.3) (T/300)(-1.5(±0.2)) ...

Journal: :international journal of environmental research 0

air pollutants from iron and steel making operations have historically been an environmental concern. the factory located at ahwaz, iran, has two production lines namely, 630 and 650, which produce iron parallel edge. the objective of the study is to determine indoor respiratory particulate matter (rpm) and feo concentrations and their comparison with niosh standards. this is a cross–sectiona...

2006
Y. Asahara D. C. Rubie D. J. Frost F. Langenhorst

Introduction: It has been considered that the Earth accreted from carbonaceous chondrite-like material (e.g., [1], [2]). This hypothesis is based on the observation that the refractory element ratios of Earth’s mantle are close to carbonaceous chondrite values, although the ratio of metallic Fe to total Fe is much closer to that of enstatite chondrite (e.g., [3]). Recently, Halliday [4] suggest...

2004
BOSMAT A. COHEN ROGER H. HEWINS

The abundance of metallic iron is highly variable in different kinds of chondrites. The precise mechanism by which metal fractionation occurred and its place in time relative to chondrule formation are unknown. As metallic iron is abundant in most Type I (FeO-poor) chondrules, determining under what conditions metal could form in chondrules is of great interest. Assuming chondrules were formed ...

2009
M. N. Rao S. Sutton

Introduction: We have shown that Gas-Rich Impact-Melt (GRIM) glasses in Shergotty, Zagami, and EET79001 (Lith A and Lith B) contain Martian regolith components that were molten during impact and quenched into glasses in voids of host rock materials based on neutron-capture isotopes, i.e., 150 Sm excesses and 149 Sm deficits in Sm, and 80 Kr excesses produced from Br [1, 2]. These GRIM glasses a...

2006
J. J. Hagerty D. J. Lawrence B. R. Hawke D. T. Vaniman R. C. Elphic W. C. Feldman

1761. Figure 1. CSR FeO map of the central basalt pond in Apollo crater. The edges of the basalt pond were modeled as different units due to lateral mixing with the surrounding materials. The absolute FeO abundances from CSR may be overestimated by as much as 2 wt.% [15]. Figure 2. Map of modeled Th compositions used in the forward model. Region 1 = 0.9 ppm Th, Region 2 = 2.5 ppm Th, and Region...

2009
Takashi Komori Terutoshi Sakakura Yasuyuki Takenaka Kiyoaki Tanaka Takashi Okuda

The title compound, Nd(3)Fe(5)O(12) (NdIG), has an iron garnet structure. One of the Fe atoms is coordinated by six O atoms in a slightly distorted octa-hedral geometry and has site symmetry. The other Fe atom is coordinated by four O atoms in a slightly distorted tetra-hedral geometry and has site symmetry. The FeO(6) octa-hedron and FeO(4) tetra-hedron are linked together by corners. The Nd a...

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