The synthesis of crystalline SnSe nanorods was successfully achieved via a chemical reaction between sodium selenosulfate (Na2SeSO3) and SnCl2·2H2O in alkaline aqueous solution in the presence of the complexing a...The synthesis of crystalline SnSe nanorods was successfully achieved via a chemical reaction between sodium selenosulfate (Na2SeSO3) and SnCl2·2H2O in alkaline aqueous solution in the presence of the complexing agent (trisodium citrate) at room temperature under ambient air. The product was characterized by X-ray diffraction (XRD), transmission electron microscopoy (TEM) and X-ray photoelectron spectroscopy (XPS). The results reveal that the SnSe nanorods are well crystalline with an average diameter of 85 nm and the lengths up to 10 μm. The possible mechanism for the formation of SnSe is also discussed.展开更多
A new approach to the quatitative analysis of Kr and Xe by isotope dilution mass spectrometry (IDMS) has been developed using inductively coupled plasma mass spectrometry (ICP-MS). The typical relative standard uncert...A new approach to the quatitative analysis of Kr and Xe by isotope dilution mass spectrometry (IDMS) has been developed using inductively coupled plasma mass spectrometry (ICP-MS). The typical relative standard uncertainties of Kr and Xe IDMS are 1%.展开更多
A new measurement technique which can be applied to determine rare gas Kr and Xe under the order of ppm by ICP-MS has been developed by our group. The gas introduction apparatus were designed and relevant analysis par...A new measurement technique which can be applied to determine rare gas Kr and Xe under the order of ppm by ICP-MS has been developed by our group. The gas introduction apparatus were designed and relevant analysis parameters were optimized. On the base of these processes, the sensitivity of Kr and Xe analysis reached (0.6-1) ×10^6cps whenair sample were directly introduced at the sampling rate of 40mL/min. The detection limit of Kr and Xeisin the oder of 10^-9L/L and 10^-11L/L, respectively.展开更多
Animals’ regional femur blood (F) alteration was studied under an inadequate decompression by using the inhaled isotope 133Xe washout method. Results showed that the average F on left and right side of minipigs’ fem...Animals’ regional femur blood (F) alteration was studied under an inadequate decompression by using the inhaled isotope 133Xe washout method. Results showed that the average F on left and right side of minipigs’ femur decreased from 15.4±1.8 and 16 .9±2.0 ml/ (100 g.min) (before exposure) to 10±1.8 and 11.1±1.6 ml/(100mg.min) (after expposure for 1.5 h under the pressure of 0.5 MPa and then decompression to normal with the rate of 0.03~0.04MPa/min), respectively; the blood flow of hematopoietic marrow tissues (f1)on both sides also decreased from 19.3±2.0 and 22.1±1.9 ml/(100mg.min) to 13.9±1.4 and 13.8±1.0 ml/(100 mg.min). The exact same alteration also happened in the experiment on New Zealand rabbits. It indicates that inadequate decompression in hyperbaric exposure can give rise to decrease animals’ bone blood flow and insufficient bone blood supply serves as one of the reasons for causing decompressive osteonecrosis.展开更多
The light spectrum of a wavelength from 200 to 1 000 nm emitted from Ti-atoms sputtered from the solid surface of Ti-target by slow highly charged ions (SHCI) has been done on the atomic physics experimental setup at ...The light spectrum of a wavelength from 200 to 1 000 nm emitted from Ti-atoms sputtered from the solid surface of Ti-target by slow highly charged ions (SHCI) has been done on the atomic physics experimental setup at the lab of ECRIS (14.5 GHz) in IMP (shown in Fig.1). The result shows that the atoms of the solid material can be strongly excited by the SHCIs even though the intensity of the incident ions is lower as展开更多
文摘The synthesis of crystalline SnSe nanorods was successfully achieved via a chemical reaction between sodium selenosulfate (Na2SeSO3) and SnCl2·2H2O in alkaline aqueous solution in the presence of the complexing agent (trisodium citrate) at room temperature under ambient air. The product was characterized by X-ray diffraction (XRD), transmission electron microscopoy (TEM) and X-ray photoelectron spectroscopy (XPS). The results reveal that the SnSe nanorods are well crystalline with an average diameter of 85 nm and the lengths up to 10 μm. The possible mechanism for the formation of SnSe is also discussed.
文摘A new approach to the quatitative analysis of Kr and Xe by isotope dilution mass spectrometry (IDMS) has been developed using inductively coupled plasma mass spectrometry (ICP-MS). The typical relative standard uncertainties of Kr and Xe IDMS are 1%.
文摘A new measurement technique which can be applied to determine rare gas Kr and Xe under the order of ppm by ICP-MS has been developed by our group. The gas introduction apparatus were designed and relevant analysis parameters were optimized. On the base of these processes, the sensitivity of Kr and Xe analysis reached (0.6-1) ×10^6cps whenair sample were directly introduced at the sampling rate of 40mL/min. The detection limit of Kr and Xeisin the oder of 10^-9L/L and 10^-11L/L, respectively.
文摘Animals’ regional femur blood (F) alteration was studied under an inadequate decompression by using the inhaled isotope 133Xe washout method. Results showed that the average F on left and right side of minipigs’ femur decreased from 15.4±1.8 and 16 .9±2.0 ml/ (100 g.min) (before exposure) to 10±1.8 and 11.1±1.6 ml/(100mg.min) (after expposure for 1.5 h under the pressure of 0.5 MPa and then decompression to normal with the rate of 0.03~0.04MPa/min), respectively; the blood flow of hematopoietic marrow tissues (f1)on both sides also decreased from 19.3±2.0 and 22.1±1.9 ml/(100mg.min) to 13.9±1.4 and 13.8±1.0 ml/(100 mg.min). The exact same alteration also happened in the experiment on New Zealand rabbits. It indicates that inadequate decompression in hyperbaric exposure can give rise to decrease animals’ bone blood flow and insufficient bone blood supply serves as one of the reasons for causing decompressive osteonecrosis.
文摘The light spectrum of a wavelength from 200 to 1 000 nm emitted from Ti-atoms sputtered from the solid surface of Ti-target by slow highly charged ions (SHCI) has been done on the atomic physics experimental setup at the lab of ECRIS (14.5 GHz) in IMP (shown in Fig.1). The result shows that the atoms of the solid material can be strongly excited by the SHCIs even though the intensity of the incident ions is lower as
