65 research outputs found
Chiral Baryon Fields in the QCD Sum Rule
We study the structure of local baryon fields using the method of QCD sum
rule. We only consider the single baryon fields and calculate their operator
product expansions. We find that the octet baryon fields belonging to the
chiral representations [(3,3*)+(3*,3)] and [(8,1)+(1,8)] and the decuplet
baryon fields belonging to the chiral representations [(3,6)+(6,3)] lead to the
baryon masses which are consistent with the experimental data of ground baryon
masses. We also calculate their decay constants, check our normalizations for
baryon fields in PRD81:054002(2010) and find that they are well-defined.Comment: 12 pages, 6 figure, 1 table, accepted by EPJ
Prunella vulgaris: A comprehensive review of chemical constituents, pharmacological effects and clinical applications.
Prunella vulgaris (PV) is a perennial herb belonging to the Labiate family and is widely distributed in northeastern Asian countries such as Korea, Japan, and China. It is reported to display diverse biological activities including anti-microbial, anti-cancer, and anti-inflammation as determined by in vitro or in vivo studies. So far, about 200 compounds have been isolated from PV plant and majority of these have been characterized mainly as triterpenoids, sterols and flavonoids, followed by coumarins, phenylpropanoids, polysaccharides and volatile oils. This review summarizes and analyzes the current knowledge on the chemical constituents, pharmacological activities, mechanisms of action and clinical applications of the PV plant including its potential as a future medicinal plant. Although some of the chemical constituents of the PV plant and their mechanism of action have been investigated the biological activities of many of these remain unknown and further clinical trials are required to further enhance its reputation as a medicinal plant
Experimental Research on the Decontamination Effect of Aqueous Solutions Containing Organic Acids on the Release of Ammonia within Confined Space
PresentationComparative tests between pure water curtain and water curtain which contains three CH3COOH, C6H807, C4H6O5 organic acids and surfactants were carried out in view of the release of ammonia in confined space. The results showed that the organic acids can promote the chemical decontamination effect of the water curtain on ammonia. The decontamination mechanism was physical absorption, air entrainment, physical block and chemical absorption. It was found that the addition of surfactant can improve the surface properties of the solution, reduce the surface tension, increase the contact area of the water curtain and ammonia, and efficiently promote the physical and chemical effect of the water curtain which contains organic acid additive. The causticity of organic additives was tested, and the results showed that three CH3COOH, C6H807, C4H6O5 organic acids have faint corrosive effect on the surrounding facilities
[Expression of cathepsin K and IL-6 mRNA in root-resorbing tissue during tooth movement in rats]
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Numerical Simulation of Mixing Performance of Gear Blocks in a Twin Screw Extruder
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