نتایج جستجو برای: aluminum isopropoxide

تعداد نتایج: 51410  

2014
Liang Chen Huiran Wang Xuebin Deng

In the mononuclear Ti(IV) title complex, [Ti(C29H33NO2)(C3H6O)2], the TiNO4 coordination polyhedron comprises an N-atom and two O-atom donors from the dianionic Schiff base ligand and two O-atom donors from monodentate isopropoxide anions. The stereochemistry is distorted trigonal-bipyramidal with the N-donor in an elongated axial site [Ti-N = 2.2540 (17) Å], the O-donors having normal Ti-O bon...

Journal: :Advanced materials proceedings 2021

This paper solely describes about novel aliphatic polymer prepared from polyethyleneglycol (PEG 400) moieties by melt poly condensation of 1, 4- cyclohexanediol and dodecanedioic acid. The structural elucidation the obtained, were thoroughly investigated various techniques such as FTIR, NMR, DSC, TGA, XRD. polycondensation reaction was carried out presence Titanium (IV) isopropoxide catalyst. W...

Journal: :Annals of clinical and laboratory science 1981
S W King J Savory M R Wills

Aluminum toxicity in patients with chronic renal failure has been related to renal osteodystrophy and dialysis encephalopathy (DES). The toxicity is associated with renal osteodystrophy in two ways. One association is the iatrogenic effect of excessive use of aluminum hydroxide gels resulting in hypophosphatemia which interferes with bone mineralization. The second association may involve depos...

Journal: :Vaccine 2011
Robert J Mitkus David B King Maureen A Hess Richard A Forshee Mark O Walderhaug

Aluminum is a ubiquitous element that is released naturally into the environment via volcanic activity and the breakdown of rocks on the earth's surface. Exposure of the general population to aluminum occurs primarily through the consumption of food, antacids, and buffered analgesics. Exposure to aluminum in the general population can also occur through vaccination, since vaccines often contain...

Journal: :Brazilian dental journal 2004
Andréa Gonçalves João Manuel Domingos de Almeida Rollo Marcelo Gonçalves Francisco Haiter Neto Frab Norberto Bóscolo

This study evaluated the performance of aluminum-copper alloy filtration, without the original aluminum filter, for dental radiography in terms of x-ray energy spectrum, air kerma rate and image quality. Comparisons of various thicknesses of aluminum-copper alloy in three different percentages were made with aluminum filtration. Tests were conducted on an intra-oral dental x-ray machine and wer...

Journal: :Chemosphere 2010
Hsing-Lung Lien Chia Ching Yu Ya-Ching Lee

Removal of perchlorate using either acid-washed zero-valent aluminum or aluminum hydroxide was studied in batch reactors under ambient temperature and pressure. Approximately 90-95% of perchlorate was removed within 24h in the presence of 35 g L(-1) aluminum at acidic pH (4.5+/-0.2). Although aluminum is a strong reductant, this study indicated no explicit evidence to support perchlorate reduct...

2017
Robert A. Yokel

The chemical forms (species) of aluminum in blood plasma and brain extracellular fluid are considered, as they are the candidates for brain aluminum uptake and efflux. The blood-brain barrier is the primary site of brain aluminum uptake. The mechanism of brain uptake of aluminum transferrin, long thought to be mediated by transferrin-receptor mediated endocytosis, requires further investigation...

2017
Masaoki Kimura Yoshihiko Matsui Kenta Kondo Tairyo B. Ishikawa Taku Matsushita Nobutaka Shirasaki

24 Aluminum coagulants are widely used in water treatment plants to remove turbidity and 25 dissolved substances. However, because high aluminum concentrations in treated water are 26 associated with increased turbidity and because aluminum exerts undeniable human health 27 effects, its concentration should be controlled in water treatment plants, especially in plants 28 that use aluminum coagu...

2016
Neil Z. Miller

Aluminum is a neurotoxin, yet infants and young children are repeatedly injected with aluminum adjuvants from multiple vaccines during critical periods of brain development. Numerous studies provide credible evidence that aluminum adversely affects important biological functions and may contribute to neurodegenerative and autoimmune disorders. It is impossible to predetermine which vaccinated b...

Journal: :Journal of the American Society of Nephrology : JASN 1995
S Anthone C M Ambrus R Kohli I Min R Anthone A Stadler I Stadler A Vladutiu

Intravenous desferrioxamine (DFO) is the method commonly used to treat aluminum toxicity. This laboratory has developed a hollow fiber device with immobilized DFO, an "Aluminum DFO-HP" (DFO-HP), for the purpose of removing aluminum without the chelator (DFO) entering the blood. With Food and Drug Administration approval, a polysulfone DFO-HP, placed in the extracorporeal circuit in series with ...

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