نتایج جستجو برای: silicon dioxide

تعداد نتایج: 159634  

2015
Dongsheng Bai Guangjin Chen Xianren Zhang Amadeu K. Sum Wenchuan Wang

Molecular dynamics simulations were performed for CO2 dissolved in water near silica surfaces to investigate how the hydrophilicity and crystallinity of solid surfaces modulate the local structure of adjacent molecules and the nucleation of CO2 hydrates. Our simulations reveal that the hydrophilicity of solid surfaces can change the local structure of water molecules and gas distribution near l...

Journal: :British journal of industrial medicine 1984
J M Peters T J Smith L Bernstein W E Wright S K Hammond

Chest x rays, smoking histories, and pulmonary function tests were obtained for 171 men employed in the manufacturing of silicon carbide. A lifetime exposure to respirable particulates (organic and inorganic fractions) and sulphur dioxide was estimated for each worker. Chest x ray abnormalities were related to respirable particulates (round opacities) and to age and smoking (linear opacities). ...

2012

Its empirical formula is C24H28N2O5•HCl, and its molecular weight is 460.96. Benazeprilat, the active metabolite of benazepril, is a non-sulfhydryl angiotensin-converting enzyme inhibitor. Benazepril is converted to benazeprilat by hepatic cleavage of the ester group. Lotensin is supplied as tablets containing 5 mg, 10 mg, 20 mg, and 40 mg of benazepril hydrochloride for oral administration. Th...

2017

Inactive ingredients are edible ink (which contains synthetic black iron oxide, FD&C Blue No. 1, FD&C Blue No. 2, FD&C Yellow No. 6, D&C Yellow No. 10, FD&C Red No. 40), ethylcellulose, gelatin, pharmaceutical glaze, colloidal silicon dioxide, starch, sucrose, talc, titanium dioxide, and coloring agents: 100 mg includes FD&C Yellow No. 6; 200 mg FD&C Red No. 3 and D&C Yellow No. 10; 300 mg FD&C...

2016

Metoprolol tartrate USP is a white, practically odorless, crystalline powder with a molecular weight of 684.82. It is very soluble in water; freely soluble in methylene chloride, in chloroform, and in alcohol; slightly soluble in acetone; and insoluble in ether. Inactive Ingredients: Tablets contain cellulose compounds, colloidal silicon dioxide, D&C Red No. 30 aluminum lake (50-mg tablets), FD...

2016
Robert A. Yokel

BBB blood-brain barrier BMEC brain microvascular (capillary) endothelial cells CBSA cationic bovine serum albumin CdTe cadmium tellurium CTAB trimethylammonium bromide DRG dorsal root ganglia HSA human serum albumin ip intraperitoneal iv intravenous MWCNT multi-walled carbon nanotube PAMAM poly(amidoamine) PBCA polybutylcyanoacrylate PEG polyethylene glycol PLA poly(lactide) PLGA poly(lactic-co...

Journal: :International journal of pharmaceutics 2011
Syusuke Sano Yasunori Iwao Susumu Kimura Shigeru Itai

A major challenge in the development of orally disintegrating tablets (ODTs) is to achieve a good balance between tablet hardness and disintegration time. In this study, an advanced method was demonstrated to improve these opposing properties in a molded tablet using a one-step procedure that exploits the swelling induced by microwave treatment. Wet molded tablets consisting of the delta form o...

1999
B. E. E. Kastenmeier P. J. Matsuo G. S. Oehrlein

A highly selective dry etching process for the removal of silicon nitride ~Si3N4) layers from silicon and silicon dioxide (SiO2) is described and its mechanism examined. This new process employs a remote O2 /N2 discharge with much smaller flows of CF4 or NF3 as a fluorine source as compared to conventional Si3N4 removal processes. Etch rates of Si3N4 of more than 30 nm/min were achieved for CF4...

Journal: :IEICE Transactions 2013
Sang Wan Kim Woo Young Choi Min-Chul Sun Hyun Woo Kim Jongho Lee Hyungcheol Shin Byung-Gook Park

In order to implement complementary logic function with L-shaped tunneling field-effect transistors (TFETs), current drivability and subthreshold swing (SS) need to be improved more. For this purpose, highk material such as hafnium dioxide (HfO2) has been used as gate dielectric rather than silicon dioxide (SiO2). The effects of device parameters on performance have been investigated and the de...

Journal: :Optics letters 2017
Christopher V Poulton Matthew J Byrd Manan Raval Zhan Su Nanxi Li Erman Timurdogan Douglas Coolbaugh Diedrik Vermeulen Michael R Watts

We demonstrate passive large-scale nanophotonic phased arrays in a CMOS-compatible silicon photonic platform. Silicon nitride waveguides are used to allow for higher input power and lower phase variation compared to a silicon-based distribution network. A phased array at an infrared wavelength of 1550 nm is demonstrated with an ultra-large aperture size of 4  mm×4  mm, achieving a record small ...

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