Results 81 to 90 of about 233,674 (199)

Discovery Prospects for a Supernova Signature of Biogenic Origin

, 2011
Approximately 2.8 Myr before the present our planet was subjected to the debris of a supernova explosion. The terrestrial proxy for this event was the discovery of live atoms of 60Fe in a deep-sea ferromanganese crust.
Basu, Bazylinski, Bosch, de Baar, Egli, Egli, Egli, Faivre, Fields, Fitoussi, Jickells, Knie, Knie, Knie, Knie, Kopp, Limongi, Limongi, Moskowitz, Nomoto, R. Egli, Rauscher, Roden, Rugel, S. Bishop, Wang, Woosley, Zachara   +27 more
core   +1 more source

Ignition means for monopropellant Patent [PDF]

, 1967
Catalyst bed ignition system for hydrazine ...
Evans, D. D., Lee, D. H.
core   +1 more source

Magnetoresistance Effects in SrFeO(3-x): Dependence on Phase Composition and Relation to Magnetic and Charge Order

, 2005
Single crystals of iron(IV) rich oxides SrFeO(3-x) with controlled oxygen content have been studied by Moessbauer spectroscopy, magnetometry, magnetotransport measurements, Raman spectroscopy, and infrared ellipsometry in order to relate the large ...
A. Lebon, A. Maljuk, A. V. Boris, B. Keimer, C. Bernhard, C. Bernhard, C. T. Lin, C. Ulrich, H. Oda, P. Adler, T. Takeda, V. Damljanović   +11 more
core   +2 more sources

Dissemination of antibiotic resistance genes is regulated by iron oxides: Insight into the influence on bacterial transformation

Environment International
The transportation of antibiotic resistance genes (ARGs) in manure-soil-plant continuums poses risks to human health. Horizontal gene transfer, particularly for bacterial transformation, is an important way for ARG dissemination. As crucial components in
Tingting Wang, Yanxing Xu, Wanting Ling, Ahmed Mosa, Si Liu, Zhipeng Lin, Hefei Wang, Xiaojie Hu   +7 more
doaj   +1 more source

An investigation into catalysts to improve the low temperature performance of an SCR [PDF]

, 2009
Selective catalytic reduction with NH3 is considered as one of the most effective technologies controlling NOx emission. Metal Fe based catalysts were used in the investigation to improve the low temperature performance of NOx conversion. The temperature
Xiao, Youhong, Zhang, Wenping, Zhou, Peilin   +2 more
core  

SYNTHESIS OF MAGNETIC IRON OXIDES FROM FERROUS SULFATE AND SUBSTITUTES AMINES

Studia Universitatis Babes-Bolyai Chemia, 2016
In this paper, magnetic iron oxides were synthesized by using a modified Ueda method starting from ferrous sulfate as iron precursor and different substitued organic amines as precipitants.
Marcela STOIA, Andra TĂMAŞ, Gerlinde RUSU, Jean MOROȘANU   +3 more
doaj  

Influence of light, temperature, and iron oxidation state on the dissolution rate of combusted iron particles in oxalic acid

Results in Engineering
It is essential to control the dissolution rate of iron oxide particles for a prospective acidic iron electrowinning process. In this study, the combined influence of temperature (40–80∘C) and short-wavelength light exposure on the dissolution rate of ...
M. Lausch, Y. Ruan, P. Brockmann, A. Zimina, B.J.M. Etzold, J. Hussong   +5 more
doaj   +1 more source

Method for producing oxygen from lunar materials [PDF]

, 1993
This invention is related to producing oxygen from lunar or Martian materials, particularly from lunar ilmenite in situ. The process includes producing a slurry of the minerals and hot sulfuric acid, the acid and minerals reacting to form sulfates of the
Sullivan, Thomas A.
core   +1 more source

Prediction of Reduction Recovery of Iron and Vanadium Oxides in Low-Grade Vanadium–Titanium Magnetite Based on Response Surface Model

Metals
In this study, the effects of reduction temperature and time on the reduction rates of iron and vanadium oxides in low-grade vanadium–titanium magnetite (VTM) were investigated.
Xueting Jiang, Hao Wu, Aijun Deng
doaj   +1 more source

Soil Fe Forms in Sugarcane Cultivations with Different Utilization Histories

علوم آب و خاک, 2019
Sugarcane is cultivated in the wide area in Khuzestan province. In these areas, irrigated sugarcane cultivation consumes more than 30,000 cubic meters per hectare annually. This research was carried out to determine the effect of sugarcane cultivation on
M. Habibian, S. Jafari, M. Sheklabadi
doaj