目的探讨经腹腔微型腹腔镜下肾盂成形术联合输尿管镜辅助肾盂切开取石术治疗肾盂输尿管连接部梗阻合并肾结石的手术技术和临床效果。方法 2007年5月-2013年12月,17例肾盂输尿管连接部梗阻合并肾结石患者术前行B超、KUB＋IVU和CT检查明...目的探讨经腹腔微型腹腔镜下肾盂成形术联合输尿管镜辅助肾盂切开取石术治疗肾盂输尿管连接部梗阻合并肾结石的手术技术和临床效果。方法 2007年5月-2013年12月,17例肾盂输尿管连接部梗阻合并肾结石患者术前行B超、KUB＋IVU和CT检查明确结石的大小和位置,均行经腹腔微型腹腔镜下肾盂成形术联合输尿管镜辅助肾盂切开取石术。术后1周复查K U B,术后3和6个月复查B超和IV P。结果 17例结石手术均获成功,无中转开放手术。术后的影像检查证实所有结石均被取净。平均手术时间195 m in,平均出血量30 m l。术后平均住院时间6 d。术后4~8周拔除双J管。术后3和6个月复查B超和IV P,均提示无吻合口狭窄。术中术后无明显并发症发生。结论经腹腔微型腹腔镜下肾盂成形术联合输尿管镜辅助肾盂切开取石术治疗肾盂输尿管连接部梗阻合并肾结石安全、有效且微创。展开更多
This paper reports the measurements of valence electron structure for the iso-butane (iso-C4H10) using high resolution （E = 0. 9eV FWHM, p = 0.1a. u） （e, 2e） spectrometer. The impact energy was 1200 eV plus bindin...This paper reports the measurements of valence electron structure for the iso-butane (iso-C4H10) using high resolution （E = 0. 9eV FWHM, p = 0.1a. u） （e, 2e） spectrometer. The impact energy was 1200 eV plus binding energy （i. e. 1205 to 1230 eV） and symmetric non-coplanar kinematics was employed. The experimental momentum Profiles have been compared with those calculated using Hartree -Fock method and Density Funchon Theory.展开更多
Organic–inorganic hybrid perovskites play an important role in improving the efficiency of solid-state dye-sensitized solar cells. In this paper, we systematically explore the efficiency-enhancing mechanism of ABX_3...Organic–inorganic hybrid perovskites play an important role in improving the efficiency of solid-state dye-sensitized solar cells. In this paper, we systematically explore the efficiency-enhancing mechanism of ABX_3（A = CH_3NH_3; B = Sn,Pb; X = Cl, Br, I） and provide the best absorber among ABX_3 when the organic framework A is CH_3NH_3 by first-principles calculations. The results reveal that the valence band maximum（VBM） of the ABX_3 is mainly composed of anion X p states and that conduction band minimum（CBM） of the ABX_3 is primarily composed of cation B p states. The bandgap of the ABX_3 decreases and the absorptive capacities of different wavelengths of light expand when reducing the size of the organic framework A, changing the B atom from Pb to Sn, and changing the X atom from Cl to Br to I. Finally, based on our calculations, it is discovered that CH_3NH_3 Sn I_3has the best optical properties and its light-adsorption range is the widest among all the ABX_3 compounds when A is CH_3NH_3. All these results indicate that the electronegativity difference between X and B plays a fundamental role in changing the energy gap and optical properties among ABX_3 compounds when A remains the same and that CH_3NH_3 Sn I_3 is a promising perovskite absorber in the high efficiency solar batteries among all the CH_3NH_3BX_3 compounds.展开更多
文摘目的探讨经腹腔微型腹腔镜下肾盂成形术联合输尿管镜辅助肾盂切开取石术治疗肾盂输尿管连接部梗阻合并肾结石的手术技术和临床效果。方法 2007年5月-2013年12月,17例肾盂输尿管连接部梗阻合并肾结石患者术前行B超、KUB＋IVU和CT检查明确结石的大小和位置,均行经腹腔微型腹腔镜下肾盂成形术联合输尿管镜辅助肾盂切开取石术。术后1周复查K U B,术后3和6个月复查B超和IV P。结果 17例结石手术均获成功,无中转开放手术。术后的影像检查证实所有结石均被取净。平均手术时间195 m in,平均出血量30 m l。术后平均住院时间6 d。术后4~8周拔除双J管。术后3和6个月复查B超和IV P,均提示无吻合口狭窄。术中术后无明显并发症发生。结论经腹腔微型腹腔镜下肾盂成形术联合输尿管镜辅助肾盂切开取石术治疗肾盂输尿管连接部梗阻合并肾结石安全、有效且微创。
文摘This paper reports the measurements of valence electron structure for the iso-butane (iso-C4H10) using high resolution （E = 0. 9eV FWHM, p = 0.1a. u） （e, 2e） spectrometer. The impact energy was 1200 eV plus binding energy （i. e. 1205 to 1230 eV） and symmetric non-coplanar kinematics was employed. The experimental momentum Profiles have been compared with those calculated using Hartree -Fock method and Density Funchon Theory.
基金Project supported by the National Natural Science Foundation of China(Grant Nos.61366007,11164032,and 61066005)the Program for New Century Excellent Talents in University of Ministry of Education of China(Grant No.NCET-12-1080)+1 种基金the Basic Applied Research Foundation of Yunnan Province,China(Grant Nos.2011CI003 and 2013FB007)the Excellent Young Talents in Yunnan University,China
文摘Organic–inorganic hybrid perovskites play an important role in improving the efficiency of solid-state dye-sensitized solar cells. In this paper, we systematically explore the efficiency-enhancing mechanism of ABX_3（A = CH_3NH_3; B = Sn,Pb; X = Cl, Br, I） and provide the best absorber among ABX_3 when the organic framework A is CH_3NH_3 by first-principles calculations. The results reveal that the valence band maximum（VBM） of the ABX_3 is mainly composed of anion X p states and that conduction band minimum（CBM） of the ABX_3 is primarily composed of cation B p states. The bandgap of the ABX_3 decreases and the absorptive capacities of different wavelengths of light expand when reducing the size of the organic framework A, changing the B atom from Pb to Sn, and changing the X atom from Cl to Br to I. Finally, based on our calculations, it is discovered that CH_3NH_3 Sn I_3has the best optical properties and its light-adsorption range is the widest among all the ABX_3 compounds when A is CH_3NH_3. All these results indicate that the electronegativity difference between X and B plays a fundamental role in changing the energy gap and optical properties among ABX_3 compounds when A remains the same and that CH_3NH_3 Sn I_3 is a promising perovskite absorber in the high efficiency solar batteries among all the CH_3NH_3BX_3 compounds.
