Hypoxia is a common pathological process in various clinical diseases and is characterized by abnormal changes in metabolism, function, and morphological structure of tissues resulting from insufficient oxygen supply ...Hypoxia is a common pathological process in various clinical diseases and is characterized by abnormal changes in metabolism, function, and morphological structure of tissues resulting from insufficient oxygen supply or oxygen barriers in tissues. In particular, hypoxia in vital organs such as the brain and heart is an important cause of death;. The prevention of tissue hypoxia and the展开更多
For the superconductors(Rb_xK_(1-x))_3C_(60)(x=0.1),according to BCS theory and assuming that the virtual phonon acting on electron-pair is corresponding to the intrasolecular vibration in the bnckminnterfullerene C_(...For the superconductors(Rb_xK_(1-x))_3C_(60)(x=0.1),according to BCS theory and assuming that the virtual phonon acting on electron-pair is corresponding to the intrasolecular vibration in the bnckminnterfullerene C_(60),a linear relationship of the superconducting transition temperature T_c with x has been derived,which is in agreement with the experimentals,展开更多
Three-dimensional-ordered Yb/Er co-doped Bi2Ti207 inverse opal, powder, and disordered reference sam- ples are prepared and their upconversion （UC） emission properties and mechanisms are investigated. Sig- nificant ...Three-dimensional-ordered Yb/Er co-doped Bi2Ti207 inverse opal, powder, and disordered reference sam- ples are prepared and their upconversion （UC） emission properties and mechanisms are investigated. Sig- nificant suppression of UC emission is detected when the photonic band-gaps overlap with Er3＋ UC green emission bands. Interestingly, green and red UC emissions follow a two-photon process in the powder sample but a three-photon one in the inverse opal.展开更多
The electrochemiluminescence (ECL) of luminol in aqueous alkaline solution was studied. Trace amounts of chloride showed significant effect on the efficiency of light emission of luminol as a posi- tive trigonometrica...The electrochemiluminescence (ECL) of luminol in aqueous alkaline solution was studied. Trace amounts of chloride showed significant effect on the efficiency of light emission of luminol as a posi- tive trigonometrical wave pulse was exerted on the solution. The detection limit for the chloride is 5.0 ×10^(-6) mol/L and the linear calibration range extends up to 1.0 ×10^(-2) mol/L; the relative standard deviation for 1.0 ×10^(-5) mol / L chloride is 5%. The influencing factors for chloride determination are also discussed. The possible mechanism for the electrochemiluminescence reaction may be due to the oxidation of chloride ion in the solution to ClO^-, and the latter acts on luminol and then gives out luminescence. The method has been applied to determine the total chloride in tap water with satisfactory results.展开更多
基金financially supported by 1226 major project [Grant no.AWS16J018]
文摘Hypoxia is a common pathological process in various clinical diseases and is characterized by abnormal changes in metabolism, function, and morphological structure of tissues resulting from insufficient oxygen supply or oxygen barriers in tissues. In particular, hypoxia in vital organs such as the brain and heart is an important cause of death;. The prevention of tissue hypoxia and the
文摘For the superconductors(Rb_xK_(1-x))_3C_(60)(x=0.1),according to BCS theory and assuming that the virtual phonon acting on electron-pair is corresponding to the intrasolecular vibration in the bnckminnterfullerene C_(60),a linear relationship of the superconducting transition temperature T_c with x has been derived,which is in agreement with the experimentals,
基金supported by the Natural Science Foundation of Yunnan Province(No.2010ZC038)the Open Foundation of Key Laboratory of Advanced Materialsin Rare,Precious and Non-ferrous Metals,Ministry of Education,and the Open Foundation of Key Laboratory of Advanced Materials of Yunnan Province(No.ZDS2010011B)
文摘Three-dimensional-ordered Yb/Er co-doped Bi2Ti207 inverse opal, powder, and disordered reference sam- ples are prepared and their upconversion （UC） emission properties and mechanisms are investigated. Sig- nificant suppression of UC emission is detected when the photonic band-gaps overlap with Er3＋ UC green emission bands. Interestingly, green and red UC emissions follow a two-photon process in the powder sample but a three-photon one in the inverse opal.
基金the National Natural Science Foundation of China.
文摘The electrochemiluminescence (ECL) of luminol in aqueous alkaline solution was studied. Trace amounts of chloride showed significant effect on the efficiency of light emission of luminol as a posi- tive trigonometrical wave pulse was exerted on the solution. The detection limit for the chloride is 5.0 ×10^(-6) mol/L and the linear calibration range extends up to 1.0 ×10^(-2) mol/L; the relative standard deviation for 1.0 ×10^(-5) mol / L chloride is 5%. The influencing factors for chloride determination are also discussed. The possible mechanism for the electrochemiluminescence reaction may be due to the oxidation of chloride ion in the solution to ClO^-, and the latter acts on luminol and then gives out luminescence. The method has been applied to determine the total chloride in tap water with satisfactory results.
