نتایج جستجو برای: chemical characteristics
تعداد نتایج: 1014293 فیلتر نتایج به سال:
Mineral trioxide aggregate (MTA) was developed in early 1990s and has been successfully used for root perforation repair, root end filling, and one-visit apexification. MTA is composed mainly of tricalcium silicate and dicalcium silicate. When MTA is hydrated, calcium silicate hydrate (CSH) and calcium hydroxide is formed. Formed calcium hydroxide interacts with the phosphate ion in body fluid ...
PURPOSE Christmas tree cataract consists of highly refractile multicolored "needles" crisscrossing the lens fibers of the deep cortex. The fact that the colors vary according to the angle of the incident light, and that in retroillumination only a dim outline of the cataract is seen, would suggest that Christmas tree cataract is a diffractive phenomenon. This study was performed to unravel the ...
Attempts were made to find and characterize an antibacterial activity (ABA) factor in porcine pancreatic juice (PJ). Its isolation requires several steps. Since ABA factor was found to be heat resistant, the first step was heating for 30 min at 65 degrees C. Afterwards column chromatography, ethanol precipitation and polyacrylamide gel electrophoresis were involved. Finally, we obtained a pancr...
During the Mediterranean Intensive Oxidant Study (MINOS) in August 2001 a total of 14 measurement flights were performed with the DLR Falcon jet aircraft from Heraklion, Crete. One objective of this campaign was to investigate the role of long-range transport of pollutants into the Mediterranean area. An analysis of 5-day back trajectories indicates that in the lower troposphere (0–4 km) air ma...
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