硅
一般危化品
硅结构式
|
常用名 | 硅 | 英文名 | Silicon |
|---|---|---|---|---|
| CAS号 | 7440-21-3 | 分子量 | 28.09000 | |
| 密度 | 2.33 | 沸点 | 2355ºC | |
| 分子式 | Si | 熔点 | 1410ºC | |
| MSDS | 中文版 美版 | 闪点 | N/A | |
| 符号 |
GHS02 |
信号词 | Warning |
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Silylation of C-H bonds in aromatic heterocycles by an Earth-abundant metal catalyst.
Nature 518(7537) , 80-4, (2015) Heteroaromatic compounds containing carbon-silicon (C-Si) bonds are of great interest in the fields of organic electronics and photonics, drug discovery, nuclear medicine and complex molecule synthesis, because these compounds have very useful physicochemical... |
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A 5-day method for determination of soluble silicon concentrations in nonliquid fertilizer materials using a sodium carbonate-ammonium nitrate extractant followed by visible spectroscopy with heteropoly blue analysis: single-laboratory validation.
J. AOAC Int. 96(2) , 251-9, (2013) A 5-day method for determining the soluble silicon (Si) concentrations in nonliquid fertilizer products was developed using a sodium carbonate (Na2CO3)-ammonium nitrate (NH4NO3) extractant followed by visible spectroscopy with heteropoly blue analysis at 660 ... |
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Diagnostic use of cerebral and extracerebral oxysterols.
Clin. Chem. Lab Med. 42(2) , 186-91, (2004) 24S-Hydroxycholesterol (24OHC) and 27-hydroxycholesterol (27OHC) are two structurally similar oxysterols of different origins--the former almost exclusively formed in the brain and the latter formed to a lesser extent in the brain than in most other organs. H... |
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Levels of 7-oxocholesterol in cerebrospinal fluid are more than one thousand times lower than reported in multiple sclerosis.
J. Lipid Res. 46(2) , 191-5, (2005) In a recent publication [Diestel, A., O. Aktas, D. Hackel, I. Hake, S. Meier, C. S. Raine, R. Nitsch, F. Zipp, and O. Ullrich. 2003. Activation of microglial poly (ADP-ribose)-polymerase-1 by cholesterol breakdown products during neuroinflammation: a link bet... |
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Disruption of thiol homeostasis and nitrosative stress in the cerebrospinal fluid of patients with active multiple sclerosis: evidence for a protective role of acetylcarnitine.
Neurochem. Res. 28(9) , 1321-8, (2003) Recent studies suggest that NO and its reactive derivative peroxynitrite are implicated in the pathogenesis of multiple sclerosis (MS). Patients dying with MS demonstrate increased astrocytic inducible nitric oxide synthase activity, as well as increased leve... |
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Folate and methylation status in relation to phosphorylated tau protein(181P) and beta-amyloid(1-42) in cerebrospinal fluid.
Clin. Chem. 53(6) , 1129-36, (2007) Increased plasma total homocysteine (tHcy) is a risk factor for neurological diseases, but the underlying pathophysiology has not been adequately explained.We evaluated concentrations of tHcy, S-adenosyl homocysteine (SAH), S-adenosyl methionine (SAM), folate... |
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Serum uric acid levels in multiple sclerosis patients correlate with activity of disease and blood-brain barrier dysfunction.
Eur. J. Neurol. 9(3) , 221-6, (2002) Several findings suggest lower levels of serum uric acid in multiple sclerosis (MS) patients. The aim of this study is to investigate relationships of uric acid serum levels in relapse-remitting (RR) MS patients with clinical activity of disease and blood-bra... |
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Inflammatory multiple-sclerosis plaques generate characteristic metabolic profiles in cerebrospinal fluid.
PLoS ONE 2(7) , e595, (2007) Multiple sclerosis (MS), an inflammatory disease of the central nervous system, manifests itself in numerous forms and stages. A number of brain metabolic alterations have been reported for MS patients vs. control subjects. However, metabolite profiles of cer... |
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Quantification of chemical elements in blood of patients affected by multiple sclerosis.
Ann. Ist. Super. Sanita 41(2) , 213-6, (2005) Although some studies suggested a link between exposure to trace elements and development of multiple sclerosis (MS), clear information on their role in the aetiology of MS is still lacking. In this study the concentrations of Al, Ba, Be, Bi, Ca, Cd, Co, Cr, ... |
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Oxidative stress in patients with multiple sclerosis.
Ukr. Biokhim. Zh. 71(3) , 112-5, (1999) It is well known that brain and nervous system cells are prone to oxidative damage because of their relatively low content of antioxidants, especially enzymatic ones, and of the high levels of both membrane polyunsaturated fatty acids (PUFA) and iron easily r... |