摘要 :
How to hunt for higher P -wave states of charmonium is still an open topic when 2 P charmonia were identified. In this work, we present an unquenched quark model calculation to illustrate the spectroscopy behavior of these 3 P , 4...
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How to hunt for higher P -wave states of charmonium is still an open topic when 2 P charmonia were identified. In this work, we present an unquenched quark model calculation to illustrate the spectroscopy behavior of these 3 P , 4 P , and 5 P states in charmonium family. For the 3 P charmonia, the predicted masses are around 4.2 GeV and their two-body open-charm decay behaviors were given, by which we propose that searching for these 3 P states via their open-charm decay channels from γ γ fusion and B decay can be accessible at future experiment like LHCb and Belle II. We continue to calculate the masses of these 4 P and 5 P charmonia. Combing with these calculated results of higher P -wave states of charmonium, we find that the coupled-channel effect becomes more obvious with increasing the radial quantum number, which can be understood well by the modified Godfrey-Isgur model with screened potential.
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摘要 :
Two phosphate-solubilizing bacterial strains were isolated and identified as Acinetobacter calcoaceticus YC-5a and Enterobacter agglomerans KMC-7 based on the 16S rRNA gene sequence analysis. A.calcoaceticus YC-5a is less well kno...
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Two phosphate-solubilizing bacterial strains were isolated and identified as Acinetobacter calcoaceticus YC-5a and Enterobacter agglomerans KMC-7 based on the 16S rRNA gene sequence analysis. A.calcoaceticus YC-5a is less well known as phosphate solubilizing plant-associated bacteria. In this study, both A.calcoaceticus YC-5a and E. agglomerans KMC-7 produced multiple organic acids followed by a decrease in the pH of the culture medium there by solubilizing the insoluble tricalcium phosphate. The soluble phosphate production of these two strains in NBRIP medium were 518.2 +/- 17.3 mg l-1 and 435.4 +/- 15.6 mg l-1, respectively. Inoculation with these two isolates were observed to significantly (p<0.05) increase the stem diameter and shoot dry weight compared to the uninoculated control. And A.calcoaceticus YC-5a showed better than E. agglomerans KMC-7 in phosphate solubilizing and plant growth promoting, though E. agglomerans KMC-7 was found to produce indole acetic acid and siderophore. The results of the study revealed that the inoculation of PSB promotes plant growth mainly by phosphate solubilizing activity, and indirectly by plant growth regulators.C1 Zhu, Xiao-li; NW Univ Xian, Sch Urban and Environm Sci, Xian 710127, Peoples R ChinaSC Genetics & Heredity; Agriculture; Chemistry
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