نتایج جستجو برای: aluminum magnesium

تعداد نتایج: 87094  

Journal: :The Journal of chemical physics 2014
Haopeng Wang Yeon Jae Ko Xinxing Zhang Gerd Gantefoer Hansgeorg Schnoeckel Bryan W Eichhorn Puru Jena Boggavarapu Kiran Anil K Kandalam Kit H Bowen

Through a synergetic combination of anion photoelectron spectroscopy and density functional theory based calculations, we have investigated the extent to which the aluminum moieties within selected magnesium-aluminum clusters are Zintl anions. Magnesium-aluminum cluster anions were generated in a pulsed arc discharge source. After mass selection, photoelectron spectra of MgmAln (-) (m, n = 1,6;...

In this study, Flake-like magnesium hydroxide (Mg(OH)2) and cubic-like aluminum hydroxide (Al(OH)3) nanostructures were synthesized via a simple co-precipitation method at relatively low temperature. Chemical properties and surface morphology of the magnesium hydroxide and aluminum hydroxide were characterized by X-ray diffraction analysis (XRD), scanning electron microscopy image (SEM), transm...

Journal: :Applied and environmental microbiology 1985
E L Madsen M Alexander

The mineralization of 1.0 to 100 ng each of four complexing compounds-oxalate, citrate, nitrilotriacetate (NTA), and EDTA-per ml was tested in media prepared in accordance with equilibrium calculations by a computer program so that the H, Ca, Mg, Fe, or Al complex (chemical species) was predominant. Sewage microorganisms mineralized calcium citrate more rapidly than iron, aluminum, or hydrogen ...

2003
Alan Andersen

This report reviews the safety of Aluminum, Calcium, Lithium Magnesium, Lithium Magnesium Sodium, Magnesium Aluminum, Magnesium, Sodium Magnesium, and Zirconium Silicates, Magnesium Trisilicate, Attapulgite, Bentonite, Fuller’s Earth, Hectorite, Kaolin, Montmorillonite, Pyrophyllite, and Zeolite as used in cosmetic formulations. The common aspect of all these claylike ingredients is that they c...

Loading conditions and complex geometry have led the cylinder heads to become the most challenging parts of diesel engines. The aim of this study is to compare the distribution of temperature and stress in the aluminum and magnesium cylinder heads under thermo-mechanical loads. The three-dimensional model of the cylinder heads was simulated in abaqus software and a two-layer viscoplasticity mod...

2013
K. V. Chew A.S.M.A. Haseeb H. H. Masjuki M. A. Fazal M. Gupta

The present study aims to investigate the comparative corrosion of light-weight metals such as aluminum and magnesium in palm biodiesel. Immersion test at room temperature was carried out for each metal for 1440 h. Sample characterization techniques employed include weight loss measurement, SEM (scanning electron microscope), XRD (X-ray diffraction), TAN (total acid number) and FTIR (Fourier tr...

2010
Jung-Moo Lee Kyung-Hyun Kim Hwa-Jung Kim Yong-Sik Ahn

Cast aluminum alloys are widely applied for the transportation industry. Alloys with silicon and magnesium as the main alloying elements are the most important of the aluminum casting alloys because of their high fluidity. However, Al-Si-Mg alloys have exhibited medium strength level at room and, especially, at elevated temperature. Recently, new casting alloys with high magnesium and silicon h...

Journal: :Science 1972
I Adler J Trombka J Gerard P Lowman R Schmadebeck H Blodget E Eller L Yin R Lamothe G Osswald P Gorenstein P Bjorkholm H Gursky B Harris

The lunar surface was mapped with respect to magnesium, aluminum, and silicon as aluminum/ silicon and magnesium/ silicon intensity ratios along the projected ground tracks swept out by the orbiting Apollo 16 spacecraft. The results confirm the observations made during the Apollo 15 flight and provide new data for a number of features not covered before. The data are consistent with the idea th...

2018
Yael Gutiérrez Rodrigo Alcaraz de la Osa Dolores Ortiz José María Saiz Francisco González

Ultraviolet plasmonics (UV) has become an active topic of research due to the new challenges arising in fields such as biosensing, chemistry or spectroscopy. Recent studies have pointed out aluminum, gallium, magnesium and rhodium as promising candidates for plasmonics in the UV range. Aluminum and magnesium present a high oxidation tendency that has a critical effect in their plasmonic perform...

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) ...

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