Anisotropic polyaniline （PAni） plates decorated with self-aligned nanofiber arrays were synthesized under the hydrothermaI conditions. The formation mechanism of the self-assembled structures was investigated by stu...Anisotropic polyaniline （PAni） plates decorated with self-aligned nanofiber arrays were synthesized under the hydrothermaI conditions. The formation mechanism of the self-assembled structures was investigated by studying the effect on PAni micro-structure with additive electrolyte in reaction system, and numerical simulation for dependence of systematic electrostatic energy on cross angles of self-assembled nanofiber arrays in grid textured PAni plates. It is proposed that the electrostatic interaction based on ionic doping charges plays an important role in the formation of the self-assembled PAni structures.展开更多
以国内2001—2022年中国知网(China National Knowledge Infrastructure,CNKI)数据库中有关教师反馈研究的700篇中文期刊文献为数据来源,借助可视化软件CiteSpace5.8.R3绘制科学知识图谱,分别对研究趋势、研究热点和研究进程进行探析。...以国内2001—2022年中国知网(China National Knowledge Infrastructure,CNKI)数据库中有关教师反馈研究的700篇中文期刊文献为数据来源,借助可视化软件CiteSpace5.8.R3绘制科学知识图谱,分别对研究趋势、研究热点和研究进程进行探析。结果表明:国内教师反馈研究于21年间呈波动上升态势;研究热点始终围绕“教师反馈”这一中心主题展开;研究领域在不同时期有各自的侧重点。希望分析结果能为今后国内教师反馈的深入研究提供借鉴。展开更多
BACKGROUND The Fontan operation is the only treatment option to change the anatomy of the heart and help improve patients’ hemodynamics.After successful operation,patients typically recover the ability to engage in g...BACKGROUND The Fontan operation is the only treatment option to change the anatomy of the heart and help improve patients’ hemodynamics.After successful operation,patients typically recover the ability to engage in general physical activity.As a better ventilatory strategy,extracorporeal membrane oxygenation(ECMO) provides gas exchange via an extracorporeal circuit,and is increasingly being used to improve respiratory and circulatory function.After the modified Fontan operation,circulation is different from that of patients who are not subjected to the procedure.This paper describe a successful case using ECMO in curing influenza A infection in a young man,who was diagnosed with Tausing-Bing syndrome and underwent Fontan operation 13 years ago.The special cardiac structure and circulatory characteristics are explored in this case.CASE SUMMARY We report a successful case using ECMO in curing influenza A infection in a 23-year-old man,who was diagnosed with Tausing-Bing syndrome and underwent Fontan operation 13 years ago.The man was admitted to the intensive care unit with severe acute respiratory distress syndrome as a result of influenza A infection.He was initially treated by veno-venous(VV) ECMO,which was switched to veno-venous-arterial ECMO(VVA ECMO) 5 d later.As circulation and respiratory function gradually improved,the VVA ECMO equipment was removed on May 1,2018.The patient was successfully withdrawn from artificial ventilation on May 28,2018 and then discharged from hospital on May 30,2018.CONCLUSION After the modified Fontan operation,circulation is different compared with that of patients who are not subjected to the procedure.There are certainly many differences between them when they receive the treatment of ECMO.Due to the special cardiac structure and circulatory characteristics,an individualized liquid management strategy is necessary and it might be better for them to choose an active circulation support earlier.展开更多
Background:Accurately diferentiating pneumocystis from cytomegalovirus pneumonia is crucial for correct therapy selection in AIDS patients.Hence,the goal of this study was to compare the computerized tomography(CT)fea...Background:Accurately diferentiating pneumocystis from cytomegalovirus pneumonia is crucial for correct therapy selection in AIDS patients.Hence,the goal of this study was to compare the computerized tomography(CT)features of pneumocystis pneumonia and cytomegalovirus pneumonia in AIDS patients and identify clinical hallmarks to accurately distinguish these two pathologies.Methods:A total of 112 AIDS patients(78 with pneumocystis pneumonia and 34 cytomegalovirus pneumonia)at Beijing Ditan Hospital from January 2017 to May 2019 were included in this study.Two experienced chest radiologists retrospectively reviewed CT images for 17 features including ground-glass opacity,consolidation,nodules,and halo sign.Binary logistic regression analyses were conducted to identify the signifcant parameters that distinguished pneumocystis pneumonia from cytomegalovirus pneumonia.Correlations were analyzed by Pearson or Spearman correlation analyses.Result were considered signifcant if P<0.05.Results:The presence of consolidation,halo signs,and nodules(all P<0.05)were signifcantly more frequent in patients with cytomegalovirus pneumonia than in those with pneumocystis pneumonia.Small nodules(32.5%in cytomegalovirus pneumonia,6.41%in pneumocystis pneumonia,P<0.001)without perilymphatic distribution were particularly common in patients with cytomegalovirus pneumonia.Large nodules were not found in any of patients with cytomegalovirus pneumonia.The presence of ground-glass opacity,reticulation,and bronchial wall thickening(all P>0.05)were common in both groups.Conclusions:Analysis of consolidation,nodules,and halo signs may contribute to the diferential diagnosis of pneumocystis pneumonia or cytomegalovirus pneumonia.However,some CT features considered typical in one or other diseases appear with similar frequency in both cohorts of AIDS patients.CT features are potentially useful for the diferential diagnosis of pneumocystis pneumonia and cytomegalovirus pneumonia in AIDS patients.展开更多
On June 29–30, 2009, the Fifth Sino-US Chemistry Professors Conference, co-organized by Lanzhou University and the Chinese-American Chemistry & Chemical Biology Professors Association (CAPA, USA), was held in Lan...On June 29–30, 2009, the Fifth Sino-US Chemistry Professors Conference, co-organized by Lanzhou University and the Chinese-American Chemistry & Chemical Biology Professors Association (CAPA, USA), was held in Lanzhou. About 150 professors from China, USA and other展开更多
The seventh Sino-US Chemistry Professors Conference,co-organized by Guizhou University （Professor Baoan Song as the chairman） and CAPA （The Chinese-American Chemistry ＆ Chemical Biology Professors Association, USA;
To the Editor:Acute fatty liver of pregnancy(AFLP)is an uncommon but potentially fatal disease unique to pregnancy that typically occurs in the third trimester and is one of the leading causes of maternal mortality in...To the Editor:Acute fatty liver of pregnancy(AFLP)is an uncommon but potentially fatal disease unique to pregnancy that typically occurs in the third trimester and is one of the leading causes of maternal mortality in critically ill patients.^([1])The Swansea diagnostic criteria have been widely used in the diagnosis of AFLP worldwide since their proposal.The Swansea criteria include clinical symptoms and laboratory tests,imaging,and pathological examination results.展开更多
The International Conference on Nanoscience and Technology, China 2011 （ChinaNANO 2011）, sponsored by the National Steering Committee for Nanotechnology and organized by the National Center for Nanoscience and Techn...The International Conference on Nanoscience and Technology, China 2011 （ChinaNANO 2011）, sponsored by the National Steering Committee for Nanotechnology and organized by the National Center for Nanoscience and Technology, China （NCNST）, was held on September 7-9, 2011 in Beijing. This is the fourth conference since ChinaNANO 2005, ChinaNANO 2007 and ChinaNANO 2009. Prof. BAI ChunLi, the president of Chinese Academy of Sciences, co-chaired the conference.展开更多
基金This work was supported by the National Natural Science Foundation of China （No.90606021, No.60676006, and No.60706019） and the State Key Program for Basic Research of China （No.2006CBOL1000）.
文摘Anisotropic polyaniline （PAni） plates decorated with self-aligned nanofiber arrays were synthesized under the hydrothermaI conditions. The formation mechanism of the self-assembled structures was investigated by studying the effect on PAni micro-structure with additive electrolyte in reaction system, and numerical simulation for dependence of systematic electrostatic energy on cross angles of self-assembled nanofiber arrays in grid textured PAni plates. It is proposed that the electrostatic interaction based on ionic doping charges plays an important role in the formation of the self-assembled PAni structures.
文摘以国内2001—2022年中国知网(China National Knowledge Infrastructure,CNKI)数据库中有关教师反馈研究的700篇中文期刊文献为数据来源,借助可视化软件CiteSpace5.8.R3绘制科学知识图谱,分别对研究趋势、研究热点和研究进程进行探析。结果表明:国内教师反馈研究于21年间呈波动上升态势;研究热点始终围绕“教师反馈”这一中心主题展开;研究领域在不同时期有各自的侧重点。希望分析结果能为今后国内教师反馈的深入研究提供借鉴。
基金Supported by the Capital Foundation of Medical Development,No. 2018-1-2171the Seedling Plan from the Beijing Ditan Hospital,Capital Medical University,No. DTYM201802。
文摘BACKGROUND The Fontan operation is the only treatment option to change the anatomy of the heart and help improve patients’ hemodynamics.After successful operation,patients typically recover the ability to engage in general physical activity.As a better ventilatory strategy,extracorporeal membrane oxygenation(ECMO) provides gas exchange via an extracorporeal circuit,and is increasingly being used to improve respiratory and circulatory function.After the modified Fontan operation,circulation is different from that of patients who are not subjected to the procedure.This paper describe a successful case using ECMO in curing influenza A infection in a young man,who was diagnosed with Tausing-Bing syndrome and underwent Fontan operation 13 years ago.The special cardiac structure and circulatory characteristics are explored in this case.CASE SUMMARY We report a successful case using ECMO in curing influenza A infection in a 23-year-old man,who was diagnosed with Tausing-Bing syndrome and underwent Fontan operation 13 years ago.The man was admitted to the intensive care unit with severe acute respiratory distress syndrome as a result of influenza A infection.He was initially treated by veno-venous(VV) ECMO,which was switched to veno-venous-arterial ECMO(VVA ECMO) 5 d later.As circulation and respiratory function gradually improved,the VVA ECMO equipment was removed on May 1,2018.The patient was successfully withdrawn from artificial ventilation on May 28,2018 and then discharged from hospital on May 30,2018.CONCLUSION After the modified Fontan operation,circulation is different compared with that of patients who are not subjected to the procedure.There are certainly many differences between them when they receive the treatment of ECMO.Due to the special cardiac structure and circulatory characteristics,an individualized liquid management strategy is necessary and it might be better for them to choose an active circulation support earlier.
文摘Background:Accurately diferentiating pneumocystis from cytomegalovirus pneumonia is crucial for correct therapy selection in AIDS patients.Hence,the goal of this study was to compare the computerized tomography(CT)features of pneumocystis pneumonia and cytomegalovirus pneumonia in AIDS patients and identify clinical hallmarks to accurately distinguish these two pathologies.Methods:A total of 112 AIDS patients(78 with pneumocystis pneumonia and 34 cytomegalovirus pneumonia)at Beijing Ditan Hospital from January 2017 to May 2019 were included in this study.Two experienced chest radiologists retrospectively reviewed CT images for 17 features including ground-glass opacity,consolidation,nodules,and halo sign.Binary logistic regression analyses were conducted to identify the signifcant parameters that distinguished pneumocystis pneumonia from cytomegalovirus pneumonia.Correlations were analyzed by Pearson or Spearman correlation analyses.Result were considered signifcant if P<0.05.Results:The presence of consolidation,halo signs,and nodules(all P<0.05)were signifcantly more frequent in patients with cytomegalovirus pneumonia than in those with pneumocystis pneumonia.Small nodules(32.5%in cytomegalovirus pneumonia,6.41%in pneumocystis pneumonia,P<0.001)without perilymphatic distribution were particularly common in patients with cytomegalovirus pneumonia.Large nodules were not found in any of patients with cytomegalovirus pneumonia.The presence of ground-glass opacity,reticulation,and bronchial wall thickening(all P>0.05)were common in both groups.Conclusions:Analysis of consolidation,nodules,and halo signs may contribute to the diferential diagnosis of pneumocystis pneumonia or cytomegalovirus pneumonia.However,some CT features considered typical in one or other diseases appear with similar frequency in both cohorts of AIDS patients.CT features are potentially useful for the diferential diagnosis of pneumocystis pneumonia and cytomegalovirus pneumonia in AIDS patients.
文摘On June 29–30, 2009, the Fifth Sino-US Chemistry Professors Conference, co-organized by Lanzhou University and the Chinese-American Chemistry & Chemical Biology Professors Association (CAPA, USA), was held in Lanzhou. About 150 professors from China, USA and other
文摘The seventh Sino-US Chemistry Professors Conference,co-organized by Guizhou University （Professor Baoan Song as the chairman） and CAPA （The Chinese-American Chemistry ＆ Chemical Biology Professors Association, USA;
基金the Research Award Fund for Clinical Medicine of Beijing Hospital Authority,China(No.ZYLX201802)。
文摘To the Editor:Acute fatty liver of pregnancy(AFLP)is an uncommon but potentially fatal disease unique to pregnancy that typically occurs in the third trimester and is one of the leading causes of maternal mortality in critically ill patients.^([1])The Swansea diagnostic criteria have been widely used in the diagnosis of AFLP worldwide since their proposal.The Swansea criteria include clinical symptoms and laboratory tests,imaging,and pathological examination results.
文摘The International Conference on Nanoscience and Technology, China 2011 （ChinaNANO 2011）, sponsored by the National Steering Committee for Nanotechnology and organized by the National Center for Nanoscience and Technology, China （NCNST）, was held on September 7-9, 2011 in Beijing. This is the fourth conference since ChinaNANO 2005, ChinaNANO 2007 and ChinaNANO 2009. Prof. BAI ChunLi, the president of Chinese Academy of Sciences, co-chaired the conference.
