Recent years,many novel complexes have been prepared by using hetero-bidentate ligands.However,complexes with such ligands as 4-vinylpyridine which has two different coordinating sites have not been reported,and only ...Recent years,many novel complexes have been prepared by using hetero-bidentate ligands.However,complexes with such ligands as 4-vinylpyridine which has two different coordinating sites have not been reported,and only a few complexes of Cu(I)have been published^(1-3).The title complex Cu_2(C_5H_4N·CH=CH_2)_3Cl was prepared and characterized by elemental analyses,ICP,IR,and electronic spectra.Its conductivity,oxidation potential and reduction potential were measured.展开更多
海生爬行动物在早三叠世生物复苏过程中遍布在古特提斯洋和西泛大洋,南漳‒远安动物群是早三叠世最早的海生爬行动物群落之一.然而,该动物群的具体生存时代以及所赋存的嘉陵江组地层的沉积时代都还不够明确.在湖北南漳‒远安一带针对南漳...海生爬行动物在早三叠世生物复苏过程中遍布在古特提斯洋和西泛大洋,南漳‒远安动物群是早三叠世最早的海生爬行动物群落之一.然而,该动物群的具体生存时代以及所赋存的嘉陵江组地层的沉积时代都还不够明确.在湖北南漳‒远安一带针对南漳‒远安动物群赋存地层开展岩石地层和同位素年代学研究.南漳‒远安动物群产于嘉陵江组二段上部的纹层状灰岩中,并获得SHRIMP II U-Pb年龄247.8±1.2 Ma.建立了南漳‒远安地区嘉陵江组上部地层对比格架,证明南漳‒远安动物群生存在早三叠世Spathian晚期.展开更多
目的分析影响ICU脓毒症患者预后的危险因素及血镁水平联合急性生理与慢性健康Ⅱ(acute physiology and chronic health evaluationⅡ,APACHE-Ⅱ)评分对ICU脓毒症患者预后的预测价值。方法对2020年1月—2022年1月期间收治的185例ICU脓毒...目的分析影响ICU脓毒症患者预后的危险因素及血镁水平联合急性生理与慢性健康Ⅱ(acute physiology and chronic health evaluationⅡ,APACHE-Ⅱ)评分对ICU脓毒症患者预后的预测价值。方法对2020年1月—2022年1月期间收治的185例ICU脓毒症患者展开回顾性研究,依据患者28 d生存情况将其分为死亡组(n=94)和存活组(n=91),单因素和logistic多因素分析脓毒症患者28 d死亡的危险因素。Pearson分析血镁水平、APACHE-Ⅱ评分与各项危险因素的相关性,受试者工作特征曲线(receiver operating characteristic,ROC)分析血镁联合APACHE-Ⅱ评分对ICU脓毒症患者预后的预测价值。结果APACHE-Ⅱ评分、序贯器官衰竭评分(sequential organ failure assessment,SOFA)、降钙素原(procalcitonin,PCT)、低镁血症、血小板计数为ICU脓毒症患者28d死亡的危险因素(P<0.05)。APACHE-Ⅱ评分与SOFA评分、PCT水平、低镁血症均呈现正相关(P<0.05),与血小板计数呈现负相关(P<0.05)。低镁血症与APACHE-Ⅱ评分、SOFA评分、PCT水平均呈现正相关(P<0.05),与血小板计数呈现负相关(P<0.05)。低镁血症(AUC=0.697)、APACHE-Ⅱ评分(AUC=0.745)对ICU脓毒症患者预后均有较好的预测价值,且二者联合(AUC=0.866)预测效果更佳。结论低镁血症联合APACHE-Ⅱ评分ICU脓毒症患者28 d死亡有较好的预测价值,临床中可将血镁水平和APACHE-Ⅱ评分作为判断预后的指标。展开更多
文摘Recent years,many novel complexes have been prepared by using hetero-bidentate ligands.However,complexes with such ligands as 4-vinylpyridine which has two different coordinating sites have not been reported,and only a few complexes of Cu(I)have been published^(1-3).The title complex Cu_2(C_5H_4N·CH=CH_2)_3Cl was prepared and characterized by elemental analyses,ICP,IR,and electronic spectra.Its conductivity,oxidation potential and reduction potential were measured.
文摘海生爬行动物在早三叠世生物复苏过程中遍布在古特提斯洋和西泛大洋,南漳‒远安动物群是早三叠世最早的海生爬行动物群落之一.然而,该动物群的具体生存时代以及所赋存的嘉陵江组地层的沉积时代都还不够明确.在湖北南漳‒远安一带针对南漳‒远安动物群赋存地层开展岩石地层和同位素年代学研究.南漳‒远安动物群产于嘉陵江组二段上部的纹层状灰岩中,并获得SHRIMP II U-Pb年龄247.8±1.2 Ma.建立了南漳‒远安地区嘉陵江组上部地层对比格架,证明南漳‒远安动物群生存在早三叠世Spathian晚期.
文摘目的分析影响ICU脓毒症患者预后的危险因素及血镁水平联合急性生理与慢性健康Ⅱ(acute physiology and chronic health evaluationⅡ,APACHE-Ⅱ)评分对ICU脓毒症患者预后的预测价值。方法对2020年1月—2022年1月期间收治的185例ICU脓毒症患者展开回顾性研究,依据患者28 d生存情况将其分为死亡组(n=94)和存活组(n=91),单因素和logistic多因素分析脓毒症患者28 d死亡的危险因素。Pearson分析血镁水平、APACHE-Ⅱ评分与各项危险因素的相关性,受试者工作特征曲线(receiver operating characteristic,ROC)分析血镁联合APACHE-Ⅱ评分对ICU脓毒症患者预后的预测价值。结果APACHE-Ⅱ评分、序贯器官衰竭评分(sequential organ failure assessment,SOFA)、降钙素原(procalcitonin,PCT)、低镁血症、血小板计数为ICU脓毒症患者28d死亡的危险因素(P<0.05)。APACHE-Ⅱ评分与SOFA评分、PCT水平、低镁血症均呈现正相关(P<0.05),与血小板计数呈现负相关(P<0.05)。低镁血症与APACHE-Ⅱ评分、SOFA评分、PCT水平均呈现正相关(P<0.05),与血小板计数呈现负相关(P<0.05)。低镁血症(AUC=0.697)、APACHE-Ⅱ评分(AUC=0.745)对ICU脓毒症患者预后均有较好的预测价值,且二者联合(AUC=0.866)预测效果更佳。结论低镁血症联合APACHE-Ⅱ评分ICU脓毒症患者28 d死亡有较好的预测价值,临床中可将血镁水平和APACHE-Ⅱ评分作为判断预后的指标。
