نتایج جستجو برای: argon compounds
تعداد نتایج: 235524 فیلتر نتایج به سال:
High pressure can fundamentally alter the bonding patterns of chemical elements. Its effects include stimulating elements thought to be "inactive" to form unexpectedly stable compounds with unusual chemical and physical properties. Here, using an unbiased structure search method based on CALYPSO methodology and density functional total energy calculations, the phase stabilities and crystal stru...
Tománková J., Bořilová J., Steinhauserová I., Gallas L. (2012): Volatile organic compounds as biomarkers of the freshness of poultry meat packaged in a modified atmosphere. Czech J. Food Sci., 30: 395–403. The volatile organic compounds (VOCs) in the packing of chicken meat in a modified atmosphere was qualitatively and quantitatively evaluated. The total number of 72 samples of chicken hindqua...
Synthesis and Study of Analgesic Activity of Some Novel Ferrocenyl Derivatives of Pyrazole Analogues
Pyrazoles have been studied for over a century as an important class of heterocyclic compounds and continue to attract considerable interest due to the broad range of biological activities they possess. The incorporation of the essential structural features of pyrazoles with a ferrocene moiety could provide new derivatives with unexpected and/or enhanced biological activities since several ferr...
[1] The impacts of the seasonal evolution of sea-ice physical properties on ice-ocean biogeochemical exchanges were investigated in landfast ice at Barrow (Alaska) from January through June 2009. Three stages of brine dynamics across the annual cycle have been identified based on brine salinity, brine volume fraction, and porous medium Rayleigh number (Ra). These are sea-ice bottom-layer convec...
The present study undertaken to identify klebsiella pneumoniae from root canal samples of clinically symptomatic nonvital teeth having periapical on first opening of root canal of 27 such intact teeth and to identify the effect of argon laser and chlorhexidine on isolated Klebsiella pneumoniae. Out of 27 samples, positive cultures were 30 samples and the isolated bacteria included Staphylococcu...
An investigation was made of various factors, both experimental and physiological, which influenced the formation of hydrogen gas by the heterocystous cyanobacterium Anabaena cylindrica B629 when incubated in both argon and air. A. cylindrica B629 produces hydrogen in air in the presence of carbon monoxide, acetylene, or both, with a short lag period. The rate of production in air at optimal co...
The Cassini Ion Neutral Mass Spectrometer (INMS) has obtained the first in situ composition measurements of the neutral densities of molecular nitrogen, methane, molecular hydrogen, argon, and a host of stable carbon-nitrile compounds in Titan's upper atmosphere. INMS in situ mass spectrometry has also provided evidence for atmospheric waves in the upper atmosphere and the first direct measurem...
A diverse set of 320 compounds from the Procter & Gamble Pharmaceuticals organic compound repository was prepared as 20-mM DMSO solutions and stored at 4 degrees C under argon in pressurized canisters to simulate a low-humidity environment. The plates were subjected to 25 freeze/thaw cycles while being exposed to ambient atmospheric conditions after each thaw to simulate the time and manner by ...
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