A new rare-earth vanadate LaBa_2V_3O_(11)is synthesized by the conventional solid state reaction.The single phase can be obtained at sintering temperature of 1010°C.The X-ray powder diffraction shows that the new...A new rare-earth vanadate LaBa_2V_3O_(11)is synthesized by the conventional solid state reaction.The single phase can be obtained at sintering temperature of 1010°C.The X-ray powder diffraction shows that the new compound has tetragonal structure with cell parameters a of 7.94 and c of 24.27 .The LaBaaV_3O_(11)can be decomposed to LaVO_4. Ba3(VO_2)_2 and V_2O_5 by higher sitering temperature than 1010°C.The as-sintered sample is insulator with resistivity of 10 12 ohm cm.Furthermore,if the as-sintered sample was annealed under H_2 atmosphere,the LaBa_2V_3O_(11)decomposed to LaVO_3 and BaYO_4 despite of the lower annealing temperature of 950°C.展开更多
Recently, a number of large molybdenum (-copper) deposits have been discovered successively in the Laba area, Shangri-La county, northwestern Yunnan province. The investigation confirmed that there is a superlarge por...Recently, a number of large molybdenum (-copper) deposits have been discovered successively in the Laba area, Shangri-La county, northwestern Yunnan province. The investigation confirmed that there is a superlarge porphyry-skarn hydrothermal vein type molybdenum-polymetallic- metallogenic system with the total prediction reservoir of more than 150 mt molybdenum. The porphyry intrusions contributed to the mineralization closely, the superficial little vein molybdenum (-copper, lead, silver) ore-bodies are usually located in faults and fractures, and the deep porphyry type ore-bodies occurred in the granodiorite porphyries, the skarn type ore-bodies occurred in the contact zone intrused into Triassic limestone or Permian basalts. Laba ore block is a new exploration area with great prospecting potential. In order to reduce the target area and guide the further exploration work, the magnetic method measurement about 3.3 square kilometres was carried out in the ore field. This paper presents an application of analyzing the horizontal and vertical derivative, using Fast Fourier Transform (FFT) filter (FFT high-pass, low-pass, cosine roll-off, suscepbility), calculated spectra frequency energy to predict the depth and intensity of the apparent remanence magnetization of source (Hilbert). The calculated results and magnetic anomalous show that the remanence anomaly is caused by the intrusions into the Triassic limestone and Permian basalts with small anomalies, and the depth of located source is not great. We have identified a number of positions to the three drilled well, the drilled result specify interpretation with very high accuracy. The magnetic method is helpful to identify porphyry mineralization, and judge the shape and depth of the concealed ore-bearing intrusive bodies under the similar geological condition.展开更多
加州Santa Clara Valley医学中心的ShelleySalpeter及其同事汇总了19项包括33826例哮喘患者的对比长效B激动剂（LABA）与安慰剂的随机试验，以评定LABA伴有的严重有生命威胁的或致死的哮喘恶化加剧率及危险。结果显示LABA增加了严重程...加州Santa Clara Valley医学中心的ShelleySalpeter及其同事汇总了19项包括33826例哮喘患者的对比长效B激动剂（LABA）与安慰剂的随机试验，以评定LABA伴有的严重有生命威胁的或致死的哮喘恶化加剧率及危险。结果显示LABA增加了严重程度加剧需住院的诊治率（比值比[OR]2．6%，95％可信区间CI]1．6-4．3）、威胁生命的加剧（OR，1．8％，95％CI 1．1-2．9）及哮喘相关的死亡（OR，3．5％，95％CI，1．3～9．3，风险差异0．07％）。展开更多
文摘目的探究及观察白葡奈氏菌片联合吸入糖皮质激素+长效β2受体激动剂(inhaled corticosteroid+long-acting β_(2)-agonist,ICS+LABA)治疗中重度慢性阻塞性肺疾病(chronic obstructive pulmonary disease,COPD)急性发作的疗效及对生活质量的影响。方法将2020年6月—2021年12月山东第一医科大学附属省立医院的80例中重度COPD急性发作患者根据随机数字表法分为2组。对照组的40例采用ICS+LABA进行治疗,观察组的40例则在对照组的基础上加用白葡奈氏菌片。比较2组的COPD治疗总有效率、不良反应发生率、治疗前后的症状体征积分、疾病状态[慢性阻塞性肺疾病评分(COPD assessment test,CAT评分)]及生活质量[世界卫生组织生存质量测定量表简表(World Health Organization on quality of life brief scale,WHOQOL-BREF评分)]。结果治疗1、2周后观察组的COPD治疗总有效率显著高于对照组,差异有统计学意义(P<0.05),2组的不良反应发生率比较,差异无统计学意义(P>0.05),治疗1、2周后观察组的COPD相关症状体征积分显著低于对照组,CAT评分构成则显著优于对照组,WHOQOL-BREF评分显著高于对照组,差异有统计学意义(P<0.05)。结论白葡奈氏菌片联合ICS+LABA治疗中重度COPD急性发作的疗效较好,且可显著改善患者的生活质量。
文摘A new rare-earth vanadate LaBa_2V_3O_(11)is synthesized by the conventional solid state reaction.The single phase can be obtained at sintering temperature of 1010°C.The X-ray powder diffraction shows that the new compound has tetragonal structure with cell parameters a of 7.94 and c of 24.27 .The LaBaaV_3O_(11)can be decomposed to LaVO_4. Ba3(VO_2)_2 and V_2O_5 by higher sitering temperature than 1010°C.The as-sintered sample is insulator with resistivity of 10 12 ohm cm.Furthermore,if the as-sintered sample was annealed under H_2 atmosphere,the LaBa_2V_3O_(11)decomposed to LaVO_3 and BaYO_4 despite of the lower annealing temperature of 950°C.
文摘Recently, a number of large molybdenum (-copper) deposits have been discovered successively in the Laba area, Shangri-La county, northwestern Yunnan province. The investigation confirmed that there is a superlarge porphyry-skarn hydrothermal vein type molybdenum-polymetallic- metallogenic system with the total prediction reservoir of more than 150 mt molybdenum. The porphyry intrusions contributed to the mineralization closely, the superficial little vein molybdenum (-copper, lead, silver) ore-bodies are usually located in faults and fractures, and the deep porphyry type ore-bodies occurred in the granodiorite porphyries, the skarn type ore-bodies occurred in the contact zone intrused into Triassic limestone or Permian basalts. Laba ore block is a new exploration area with great prospecting potential. In order to reduce the target area and guide the further exploration work, the magnetic method measurement about 3.3 square kilometres was carried out in the ore field. This paper presents an application of analyzing the horizontal and vertical derivative, using Fast Fourier Transform (FFT) filter (FFT high-pass, low-pass, cosine roll-off, suscepbility), calculated spectra frequency energy to predict the depth and intensity of the apparent remanence magnetization of source (Hilbert). The calculated results and magnetic anomalous show that the remanence anomaly is caused by the intrusions into the Triassic limestone and Permian basalts with small anomalies, and the depth of located source is not great. We have identified a number of positions to the three drilled well, the drilled result specify interpretation with very high accuracy. The magnetic method is helpful to identify porphyry mineralization, and judge the shape and depth of the concealed ore-bearing intrusive bodies under the similar geological condition.
文摘加州Santa Clara Valley医学中心的ShelleySalpeter及其同事汇总了19项包括33826例哮喘患者的对比长效B激动剂（LABA）与安慰剂的随机试验，以评定LABA伴有的严重有生命威胁的或致死的哮喘恶化加剧率及危险。结果显示LABA增加了严重程度加剧需住院的诊治率（比值比[OR]2．6%，95％可信区间CI]1．6-4．3）、威胁生命的加剧（OR，1．8％，95％CI 1．1-2．9）及哮喘相关的死亡（OR，3．5％，95％CI，1．3～9．3，风险差异0．07％）。
