Competition of hydrocarbon compounds with sulfides in gasoline has caused a not very high selectivity of sulfides in adsorption desulfurization so far,resulting in a reduction of catalyst lifetime as well as more sulf...Competition of hydrocarbon compounds with sulfides in gasoline has caused a not very high selectivity of sulfides in adsorption desulfurization so far,resulting in a reduction of catalyst lifetime as well as more sulfur oxide emissions.Tostudy the whole competitive process changing with the increase of the loading,the dynamic competition adsorption mechanism of cyclohexene and thiophene in siliceous faujasite(FAU)zeolite was analyzed by the Monte Carlo simulation.The results showed that with the increase of the loading,thiophene and cyclohexene had different performances before and after the inflection point of 40 molecule/UC.The adsorbates were distributed ideally at optimal sites during the stage that occurred before the inflection point,which is called the“optimal-displacement adsorption”stage.When approaching the inflection point,the competition became apparent and the displacement appeared accordingly,some thiophene molecules at S sites(refers to the sites inside the supercages)were displaced by cyclohexene.After the inflection point,the concentration of adsorbates at W sites(refers to the 12-membered ring connecting the supercages)was significantly reduced,whereas the adsorbates at S sites got more concentrated.The stage some cyclohexene molecules displaced by thiophene and inserted into the center of the supercage can be named as the“insertion-displacement adsorption”stage,and both the adsorption behavior and the competitive relationship became localized when the adsorption amount became saturated.This shift in the competitive adsorption mechanism was due to the sharp increase of interaction energy between the adsorbates.Besides,the increase in temperature and ratio of Si/Al will allow the adsorbates,especially thiophene molecules to occupy more adsorption sites,and it is beneficial to improve the desulfurization selectivity.展开更多
Object:Traditional Chinese medicine(TCM)has been taught widely in the both Eastern and Western world countries.This study compared the origin,student source,duration,and curriculum design of TCM higher education progr...Object:Traditional Chinese medicine(TCM)has been taught widely in the both Eastern and Western world countries.This study compared the origin,student source,duration,and curriculum design of TCM higher education programs in China and five Western countries.Method:We searched the Internet and the China National Knowledge Infrastructure(CNKI)database to gather relevant information.Result:All the six countries offer acupuncture and/or Chinese herbal medicine programs at universities and/or private schools.However,there are great large differences among them in the education of curriculum and TCM students enrollment and curriculum policies of TCM courses.Conclusions:There are large differences among their curriculum and enrollment policies.This comparison should provide information about the further development of international standards in TCM education.展开更多
Objective:To assess the effectiveness and safety of acupoint injection for the treatment of asthma.Methods:Six electronic databases were searched for randomized controlled trials(RCTs)of acupoint injection for asthma....Objective:To assess the effectiveness and safety of acupoint injection for the treatment of asthma.Methods:Six electronic databases were searched for randomized controlled trials(RCTs)of acupoint injection for asthma.Two authors extracted data and assessed methodological quality independently using the Cochrane Collaboration Risk of Bias tool.Data were evaluated using RevMan v5.2.Results:Eighteen RCTs involving 1913 participants with asthma were identified.Overall methodological quality of the RCTs was classified as unclear risk of bias.Western medicine(12 RCTs)was injected most frequently into acupoints,followed by Chinese herbal medicine(four RCTs),vitamins(one RCT),and Chinese herbal medicine combined with Western medicine(one RCT).Four RCTs used only one acupoint[ST36(two RCTs),BL13,CV22],whereas the other RCTs selected multiple acupoints(among which BL13 was used most frequently).One RCT reported mortality,no RCT reported quality of life,15 RCTs reported the symptom improvement rate,one RCT reported asthma control test(ACT)data,one RCT reported the duration of asthma,three RCTs reported the mean time that asthma was controlled(MTAC),and 13 RCTs reported lung-function tests(LFTs).Some RCTs showed acupoint injection may improve the attack time of asthma,MTAC,and LFTs.Five RCTs reported the outcome of adverse events and showed no significant differences between the acupoint injection group and control group.Conclusions:The findings suggest that acupoint injection may be effective for improving ACT data,duration of asthma,MTAC and LFTs.However,the evidence is insufficient owing to the poor methodological quality of the RCTs.展开更多
Direct-acting antiviral (DAA) therapy is often well-tolerated, and adverse events from DAA therapy are uncommon. We report a case of a woman who underwent orthotopic liver transplant for chronic hepatitis C infection ...Direct-acting antiviral (DAA) therapy is often well-tolerated, and adverse events from DAA therapy are uncommon. We report a case of a woman who underwent orthotopic liver transplant for chronic hepatitis C infection and later devel-oped alloimmune hepatitis shortly after starting DAA therapy for recurrent hepatitis C infection. The patient developed acute alloimmune hepatitis approximately 2 weeks after starting treatment with sofosbuvir, velpatasvir, and voxilap-revir. This case report proposes a dysregulation of immune surveillance due to the DAA stimulation of host immunity and rapid elimination of hepatitis C viral load as a precipitating factor for the alloimmune process, leading to alloimmune hepatitis in a post-transplant patient who starts on DAA.展开更多
基金the National Natural Science Foundation of China(21822810,21838011)the National Key Research and Development Program(2018YFC1902603).
文摘Competition of hydrocarbon compounds with sulfides in gasoline has caused a not very high selectivity of sulfides in adsorption desulfurization so far,resulting in a reduction of catalyst lifetime as well as more sulfur oxide emissions.Tostudy the whole competitive process changing with the increase of the loading,the dynamic competition adsorption mechanism of cyclohexene and thiophene in siliceous faujasite(FAU)zeolite was analyzed by the Monte Carlo simulation.The results showed that with the increase of the loading,thiophene and cyclohexene had different performances before and after the inflection point of 40 molecule/UC.The adsorbates were distributed ideally at optimal sites during the stage that occurred before the inflection point,which is called the“optimal-displacement adsorption”stage.When approaching the inflection point,the competition became apparent and the displacement appeared accordingly,some thiophene molecules at S sites(refers to the sites inside the supercages)were displaced by cyclohexene.After the inflection point,the concentration of adsorbates at W sites(refers to the 12-membered ring connecting the supercages)was significantly reduced,whereas the adsorbates at S sites got more concentrated.The stage some cyclohexene molecules displaced by thiophene and inserted into the center of the supercage can be named as the“insertion-displacement adsorption”stage,and both the adsorption behavior and the competitive relationship became localized when the adsorption amount became saturated.This shift in the competitive adsorption mechanism was due to the sharp increase of interaction energy between the adsorbates.Besides,the increase in temperature and ratio of Si/Al will allow the adsorbates,especially thiophene molecules to occupy more adsorption sites,and it is beneficial to improve the desulfurization selectivity.
基金the Innovative Research Team of Beijing University of Chinese Medicine(2011-CXTD-09)partially supported by the“Capacity Building Project for TCM Clinical Researchers”(Grant No.:201207007)from the State Administration of TCM in China.
文摘Object:Traditional Chinese medicine(TCM)has been taught widely in the both Eastern and Western world countries.This study compared the origin,student source,duration,and curriculum design of TCM higher education programs in China and five Western countries.Method:We searched the Internet and the China National Knowledge Infrastructure(CNKI)database to gather relevant information.Result:All the six countries offer acupuncture and/or Chinese herbal medicine programs at universities and/or private schools.However,there are great large differences among them in the education of curriculum and TCM students enrollment and curriculum policies of TCM courses.Conclusions:There are large differences among their curriculum and enrollment policies.This comparison should provide information about the further development of international standards in TCM education.
基金This work is supported in part by the Project for Capacity Building of TCM Clinical Researchers(grant number,201207007)the Program of Innovative Research Team of Beijing University of Chinese Medicine(2011-CXTD-09)LQ Wang was supported by the Independent Research Project from the Beijing University of Chinese Medicine(2014-JYBZZ-XS-066).
文摘Objective:To assess the effectiveness and safety of acupoint injection for the treatment of asthma.Methods:Six electronic databases were searched for randomized controlled trials(RCTs)of acupoint injection for asthma.Two authors extracted data and assessed methodological quality independently using the Cochrane Collaboration Risk of Bias tool.Data were evaluated using RevMan v5.2.Results:Eighteen RCTs involving 1913 participants with asthma were identified.Overall methodological quality of the RCTs was classified as unclear risk of bias.Western medicine(12 RCTs)was injected most frequently into acupoints,followed by Chinese herbal medicine(four RCTs),vitamins(one RCT),and Chinese herbal medicine combined with Western medicine(one RCT).Four RCTs used only one acupoint[ST36(two RCTs),BL13,CV22],whereas the other RCTs selected multiple acupoints(among which BL13 was used most frequently).One RCT reported mortality,no RCT reported quality of life,15 RCTs reported the symptom improvement rate,one RCT reported asthma control test(ACT)data,one RCT reported the duration of asthma,three RCTs reported the mean time that asthma was controlled(MTAC),and 13 RCTs reported lung-function tests(LFTs).Some RCTs showed acupoint injection may improve the attack time of asthma,MTAC,and LFTs.Five RCTs reported the outcome of adverse events and showed no significant differences between the acupoint injection group and control group.Conclusions:The findings suggest that acupoint injection may be effective for improving ACT data,duration of asthma,MTAC and LFTs.However,the evidence is insufficient owing to the poor methodological quality of the RCTs.
文摘Direct-acting antiviral (DAA) therapy is often well-tolerated, and adverse events from DAA therapy are uncommon. We report a case of a woman who underwent orthotopic liver transplant for chronic hepatitis C infection and later devel-oped alloimmune hepatitis shortly after starting DAA therapy for recurrent hepatitis C infection. The patient developed acute alloimmune hepatitis approximately 2 weeks after starting treatment with sofosbuvir, velpatasvir, and voxilap-revir. This case report proposes a dysregulation of immune surveillance due to the DAA stimulation of host immunity and rapid elimination of hepatitis C viral load as a precipitating factor for the alloimmune process, leading to alloimmune hepatitis in a post-transplant patient who starts on DAA.
