Based on density functional first-principles calculations and anisotropic Eliashberg equations,we have investigated the electronic structure,lattice dynamics,and phonon-mediated superconductivity in newly synthesized ...Based on density functional first-principles calculations and anisotropic Eliashberg equations,we have investigated the electronic structure,lattice dynamics,and phonon-mediated superconductivity in newly synthesized layered compound Sr BC under pressure.Different from Li BC and Mg B2,our calculations surprisingly reveal that Sr BC is isotropic in compressibility,due to the accumulation of substantial electrons in the interstitial region.We find that the Sr phonons strongly couple with B-2 pz orbital and the interstitial states,giving rise to a two-gap superconductivity in Sr BC,whose transition temperature shows an inverted V-shaped dependence on pressure.The maximal transition temperature is about 22 K at50 GPa.On both sides of 50 GPa,the transition temperature exhibits quasi-linear variation with positive and negative slopes,respectively.Such a variation of transition temperature is infrequent among phonon-mediated superconductors.The competition between enhanced electron–phonon matrix element and hardened phonons plays an essential role in governing the behavior of the critical temperature.展开更多
This study focused on the influences of opioids on the generation of antibody against sheep erythrocyte in vitro, It was found that morphine. a-CAO, DADLE, MENK were able to inhibit the capacity of murine spleen cell...This study focused on the influences of opioids on the generation of antibody against sheep erythrocyte in vitro, It was found that morphine. a-CAO, DADLE, MENK were able to inhibit the capacity of murine spleen cells to generate antibody and leukotriene C4 and conversely. dynorphin was able to stimulate the capacity of murine spleen cells to generate antibody and leukotriene C4. Morphine, a-CAO, MENK, DADLE, dynorphin decreased intracellular cAMP level, increased [Ca(2+)]i and calmodulin activity. The effects were completely blocked by naloxone, the specific opioid antagonist. Our results showed that opioids regulate the production of antibody in murine spleen cells, and alter intracellular cAMP, [Ca(2+)]i calmodulin activity. and leukotriene C4 production by way of binding to different receptor types.展开更多
The IgG of rabbit anti SRBC receptors on the surface membranes of human lymphocytes (SRBC receptor Ⅰ) and anti SRBC receptors of human serum (SRBC receptor Ⅱ) were used as ligands in the preparation of two separate ...The IgG of rabbit anti SRBC receptors on the surface membranes of human lymphocytes (SRBC receptor Ⅰ) and anti SRBC receptors of human serum (SRBC receptor Ⅱ) were used as ligands in the preparation of two separate affinity chromatographie columns with CNBr activated Sepharose 4B. It gives us much interest that if 2 or 3展开更多
It was found in our lab that the surface markers stripped down from human lymphocytes by the treatment at 45℃ for 1 h and then adsorbed by SRBG were not limited to SRBG receptors alone as reported by Mendes. The shee...It was found in our lab that the surface markers stripped down from human lymphocytes by the treatment at 45℃ for 1 h and then adsorbed by SRBG were not limited to SRBG receptors alone as reported by Mendes. The sheep was immunized with its own R BG thus treated. The Ig from the collected antisera was coupled with Sepharose 4B forming an affinity chromatography column. The profiles of the SDS-PAGE (reduced) of展开更多
基金the National Natural Science Foundation of China(Grant Nos.11974194 and 11974207)K.C.Wong Magna Fund in Ningbo University。
文摘Based on density functional first-principles calculations and anisotropic Eliashberg equations,we have investigated the electronic structure,lattice dynamics,and phonon-mediated superconductivity in newly synthesized layered compound Sr BC under pressure.Different from Li BC and Mg B2,our calculations surprisingly reveal that Sr BC is isotropic in compressibility,due to the accumulation of substantial electrons in the interstitial region.We find that the Sr phonons strongly couple with B-2 pz orbital and the interstitial states,giving rise to a two-gap superconductivity in Sr BC,whose transition temperature shows an inverted V-shaped dependence on pressure.The maximal transition temperature is about 22 K at50 GPa.On both sides of 50 GPa,the transition temperature exhibits quasi-linear variation with positive and negative slopes,respectively.Such a variation of transition temperature is infrequent among phonon-mediated superconductors.The competition between enhanced electron–phonon matrix element and hardened phonons plays an essential role in governing the behavior of the critical temperature.
文摘This study focused on the influences of opioids on the generation of antibody against sheep erythrocyte in vitro, It was found that morphine. a-CAO, DADLE, MENK were able to inhibit the capacity of murine spleen cells to generate antibody and leukotriene C4 and conversely. dynorphin was able to stimulate the capacity of murine spleen cells to generate antibody and leukotriene C4. Morphine, a-CAO, MENK, DADLE, dynorphin decreased intracellular cAMP level, increased [Ca(2+)]i and calmodulin activity. The effects were completely blocked by naloxone, the specific opioid antagonist. Our results showed that opioids regulate the production of antibody in murine spleen cells, and alter intracellular cAMP, [Ca(2+)]i calmodulin activity. and leukotriene C4 production by way of binding to different receptor types.
文摘The IgG of rabbit anti SRBC receptors on the surface membranes of human lymphocytes (SRBC receptor Ⅰ) and anti SRBC receptors of human serum (SRBC receptor Ⅱ) were used as ligands in the preparation of two separate affinity chromatographie columns with CNBr activated Sepharose 4B. It gives us much interest that if 2 or 3
基金Project supported by the National Natural Science Foundation of China
文摘It was found in our lab that the surface markers stripped down from human lymphocytes by the treatment at 45℃ for 1 h and then adsorbed by SRBG were not limited to SRBG receptors alone as reported by Mendes. The sheep was immunized with its own R BG thus treated. The Ig from the collected antisera was coupled with Sepharose 4B forming an affinity chromatography column. The profiles of the SDS-PAGE (reduced) of
