Oxidized at 900℃ for 500h, the HDA 1Cr18N9Ti steel has formed a compact α-Al 2O 3 oxide film and a single β-NiAl phase layer, and the HDA 1Cr13 steel has formed a compact Al 2O 3 oxide film and Cr 2O 3 oxidate.
the average particle size is 81.7nm and the antibacterial effective substance in the sample are the oxide of Cu~2+,Zn~2+ and the solid solution structure that created by Cu~2+,Zn~2+ with Al~3+ or Al~3+ and O~2-.
Results show that the samples with x≤3 annealed at 1173K and 1323K and the sample with x=4 annealed at 1323K are approximately single phase,2∶17 main phase with rhombohedral Th_2Zn_(17)-type structure only containing Gd,Co and Al elements,while the small amount of impurity phases being the oxide of rich-Gd,Co-rich phase or ζ-CoAl.
On the basis of consulting documents and a large amount of practice, this experiment adopts the oxide (Al_2O_3 , ZrO_2 ), the carbide (SiC) matches each other for the primitive material with the metal powder (Al powder ), have designed four kinds of different prescription : (1)Al/Al_2O_3/SiC ;
Recent research on guanidines has focused on enzyme systems such as xanthine oxidase and nitric oxide synthase.
N-aminoimidazoles and pyridine oxide derivatives) which seem to interfere with a post-integration, transcription transactivation event.
The following structure has been determined for the repeating unit: →6)-α-D-Glcp-(1→ This fraction exhibited significant macrophage activity through the release of nitric oxide
Many food algae and red tide algae were cultivated in the f/2 medium, and the nitric oxide (NO) concentration of the medium and the cell density were determined.
The studies over forty years on rare earth catalysts in polymer syntheses of diene, alkyne, alkylene oxide, thiirane, carbon dioxide copolymerization, lactide, caprolactone, cyclic carbonate and so forth in China have been reviewed.
A sequence of oxidate facies sediments associated with a cupriferous massive sulphide deposit in the Solomon Islands is the product of precipitation at an exhalative fluid/seawater interface.
The overlying iron formation were chemically precipitated as oxidate sediments in which the principal iron mineral - magnetite - was formed at low temperature in a shallow marine environment.
The mineralogy and chemistry of oxidate facies sediments associated with a Solomon Island cupriferous pyrite deposit are described.
Algal siderophores have a strong avidity for ferric versus ferrous iron, quickly oxidate FeII and efficiently solubilize FeIII hydroxides.
Analytical and preparative thin layer chromatography, gas chromatography, infrared spectrometry and nuclear magnetic resonance are used for qualitative and quantitative analysis of the components, contained in the oxidate.