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is a highly corrosive mineral acid. the pure compound is colorless, but older samples tend to acquire a yellow cast due to decomposition into oxides of nitrogen and water. nitric acid lab grade nitric acid is prepared by reaction of nitrogen dioxide (no ) with water. no + h o → hno + no the nitric oxide...
transparent - - t : : + : south korean researchers hope their new design for silicon solar cells may one day replace windows sponsored content mass spectrometry: manchester to michigan sponsored by leco uk , by alan griffiths ava control software proves the power of automation in the lab sponsored by...
oxygen for reaction can be obtained from the use of air. however, direct use of oxygen, or enrichment of the air with oxygen, is necessary for some processes. there are several major petrochemical intermediates that are presently manu- factured with high-purity oxygen including ethylene and propylene oxide...
formation and reduced af susceptibility. [ ] trpc , trpc , and trpc channels are all involved in cardiac hypertrophy. the mechanism of how trpc channels promote cardiac hypertrophy is through activation of the calcineurin pathway and the downstream transcription factor nuclear factor of activated t-cells...
nearly % calcium carbonate and conchiolin . it is thought that natural pearls form under a set of accidental conditions when a microscopic intruder or parasite enters a bivalve mollusk and settles inside the shell. the mollusk, irritated by the intruder, forms a pearl sac of external mantle tissue cells...