Results 71 to 80 of about 24,708 (261)

Avian magnetoreception: elaborate iron mineral containing dendrites in the upper beak seem to be a common feature of birds

, 2010
The magnetic field sensors enabling birds to extract orientational information from the Earth’s magnetic field have remained enigmatic. Our previously published results from homing pigeons have made us suggest that the iron containing sensory dendrites ...
Mouritsen, H., Kühbacher, Markus, Kuehbacher, M., Markus Kuehbacher, Fleissner, Gerta, Fleissner, G., Wellenreuther, G., Thalau, Peter, Mouritsen Henrik, Heyers, D., Dominik Heyers, Fleissner Guenther, Wellenreuther, Gerd, Kirsten Schuchardt, Thalau Peter, Mouritsen, Henrik, Thalau, P., Fleissner Gerta, Wellenreuther Gerd, Henrik Mouritsen, Schuchardt Kirsten, Falkenberg Gerald, Gerd Wellenreuther, Schuchardt, Kirsten, Gerald Falkenberg, Guenther Fleissner, Heyers Dominik, Heyers, Dominik, Fleissner, Günther, Falkenberg, G., Schuchardt, K., Peter Thalau, Gerta Fleissner, Falkenberg, Gerald, Kuehbacher Markus   +34 more
core   +1 more source

Goethite Reduction by a Neutrophilic Member of the Alphaproteobacterial Genus Telmatospirillum

Frontiers in Microbiology, 2019
In tropical iron ore regions, biologically mediated reduction of crystalline iron oxides drives ongoing iron cycling that contributes to the stability of surface duricrusts.
Emma J. Gagen, Julian Zaugg, Gene W. Tyson, Gordon Southam   +3 more
doaj   +1 more source

Laser Powder Bed Fusion of Alumina: Effects of Scanning Strategies on External and Internal Defects

Advanced Engineering Materials, EarlyView.
This study investigates how scanning strategies affect pure alumina in laser powder bed fusion. Linear 45° scanning yields uniform surfaces but high porosity, while the island‐concentric strategy provides higher density with through‐holes favorable for infiltration. Findings highlight pathways toward optimizing defect‐free alumina parts.
Mohamed Abdelmoula, Gökhan Küçüktürk, Duran Kaya, David Grossin, Christophe Tenailleau, Benjamin Duployer, Enrique Juste, Fabrice Petit   +7 more
wiley   +1 more source

Electrochemical Evaluation of Compressed Selective Laser Melted AlSi7Mg and AlSi10Mg Alloys in Chloride Environment

Advanced Engineering Materials, EarlyView.
The corrosion performance of AlSi7Mg and AlSi10Mg alloys produced through selective laser melting (SLM) was examined under compressive stress in a chloride environment. Electrochemical analyses, including open‐circuit potential (OCP), potentiodynamic polarization (CPP), and electrochemical impedance spectroscopy (EIS), were complemented by scanning ...
Femi John Akinfolarin, Samson Dare Oguntuyi, Peter Apata Olubambi   +2 more
wiley   +1 more source

The associations of heavy metals with crystalline iron oxides in the polluted soils around the mining areas in Guangdong Province, China

, 2016
In current selective sequential extraction (SSE) methods, heavy metals associated well-crystallized iron oxyhydroxides are not well defined and considered, and usually fall into residual forms, which actually make their mobility and environmental risk ...
Feng, Xionghan, Qu, Mingkai, Liang, Xiaoliang, Qiu, Guohong, Liu, Chuanping, Yin, Hui, Tan, Wenfeng, Liu, Fan, Tan, Nianhao, Wang, Juju   +9 more
core   +1 more source

When Density Functional Approximations Meet Iron Oxides [PDF]

, 2016
Three density functional approximations (DFAs), PBE, PBE+U, and Heyd–Scuseria–Ernzerhof screened hybrid functional (HSE), were employed to investigate the geometric, electronic, magnetic, and thermodynamic properties of four iron oxides, namely, α-FeOOH,
Albert Dearden (2920761), Cao, Dong-Bo, Yong Yang (63842), Dong-Bo Cao (1742818), Haijun Jiao (1400491), Chun-Fang Huo (2343325), Jiao, Haijun, Yu Meng (152553), Xavier Gonze (1441312), Yongwang Li (1470322), Guo, Wen-Ping, Yang, Yonh, Yang, Yong, Jianguo Wang (1400488), Xing-Wu Liu (3089847), Meng, Yu, Liu, Xing-Wu, Peng, Qing, Wang, Jianguo, Li, Yongwang, Wen-Ping Guo (280775), Qing Peng (148438), Xiao-Dong Wen (153765), Dearden, Albert, Gonze, Xavier, Wen, Xiao-Dong, Huo, Chun-Fang   +26 more
core   +1 more source

Effect of Iron Oxides (Ordinary and Nano) and Municipal Solid Waste Compost (MSWC) Coated Sulfur on Wheat (Triticum aestivum L.) Plant Iron Concentration and Growth

پژوهشهای زراعی ایران, 2011
A greenhouse study was conducted to compare the effects of ordinary iron oxide (0.02-0.06 mm) and nano iron oxide (25-250 nm) and five levels of both iron oxides (0, 0.05, 0.1, 0.5, and 1.0 %w/w) and two levels of sulfurous granular compost (MSW) (0 and ...
S Mazaherinia, a Astaraei, َ Fotovat, a Monshi   +3 more
doaj   +1 more source

Characterization of Aluminized Layers on Inconel‐738 Alloy: Microstructure, Modeling of Aluminizing Kinetics, and Thermal Behavior

Advanced Engineering Materials, EarlyView.
This study explored how effective nickel aluminide coatings are obtained in providing oxidation resistance applied to the Inconel 738 alloy, modeling with diffusion models. In the present study, kinetics and thermal behavior of the Inconel 738 alloy were studied by the low‐temperature thermoreactive aluminizing process, which was carried out at 625°C ...
Gozde Celebi Efe, Tuba Yener, Suayb Cagri Yener, Mourad Keddam, Cuma Bindal   +4 more
wiley   +1 more source

Innovative Processing of Compacted Waste Aluminum Alloy Powders via Controlled Remelting and Solidification

Advanced Engineering Materials, EarlyView.
This study demonstrates an efficient recycling route for out‐of‐spec AlSi10Mg atomized powders through compaction and arc remelting followed by suction casting. By correlating compaction load, cooling rate, and resulting microstructure, we show that intermediate pressures (50–80 kN) and rapid cooling refine dendrites, reduce porosity, and enhance ...
Mila Christy de Oliveira, Marcella Gaute Cavalcante Xavier, Abdoul‐Aziz Bogno, Piter Gargarella, José Eduardo Spinelli   +4 more
wiley   +1 more source

Manganese deposits of the Cape Peninsula, South Africa

, 2013
The outcrops, petrography and geochemistry of manganese deposits were studied at several sites on the Cape Peninsula (Skeleton Gorge, Kasteelpoort Path, Kommetjie and Hout Bay) as well as at Rooi Els on the opposite side of False Bay.
MacGregor, Duncan Graeme
core