AIM:To investigate the benefits of hyoscine butylbromide in polyp detection during colonoscopy by a meta-analysis of available randomized controlled trials(RCTs).METHODS:Databases,including PubMed,EMBASE,the Cochrane ...AIM:To investigate the benefits of hyoscine butylbromide in polyp detection during colonoscopy by a meta-analysis of available randomized controlled trials(RCTs).METHODS:Databases,including PubMed,EMBASE,the Cochrane Library,and the Science Citation Index up to September 2013,were searched.The primary outcome was polyp detection rate,and the secondary outcome was adenoma detection rate.The metaanalysis was performed using the free software Review Manager.Differences observed between the treated and the control groups were expressed as odds ratio(OR)with a 95%confidence interval(CI).A fixedeffects model was used to pool data when statistical heterogeneity was absent.If statistical heterogeneity was present(P<0.05),a random-effects model was used.RESULTS:The initial search identified nine articles.After screening,five RCTs with a total of 1998 patients were included in this meta-analysis.Of the five studies,all described a comparison of baseline patient characteristics and showed that there was no statistically significant difference between the two groups.Among the 1998 patients,1006 received hyoscine butylbromide and 992 were allocated to the control group,and the polyp detection rate was reported.There were no significant differences between the treated and the control group(OR=1.09,95%CI:0.91-1.31,P=0.33).Four RCTs included 1882 patients,of whom948 received hyoscine butylbromide,and the adenoma detection rate was reported.There were no significant differences between the treated and the control group(OR=1.13,95%CI:0.92-1.38,P=0.24).CONCLUSION:The use of hyoscine butylbromide did not significantly improve the polyp detection rate during colonoscopy.展开更多
Rich oxygen-biological activated carbon(RO-BAC)method developed from traditional BAC method is a sys-tem in which high pressure is applied to improve the oxy-gen concentration of the influent.Experiment withwastewater...Rich oxygen-biological activated carbon(RO-BAC)method developed from traditional BAC method is a sys-tem in which high pressure is applied to improve the oxy-gen concentration of the influent.Experiment withwastewater and the slightly deteriorated raw water showsthe system is an effective option for advanced treatmentof industry wastewater and pretreatment of slightly dete-riorated raw water.The experiment results and the in-fluential factors are discussed in this paper.展开更多
Integrating surface enhanced Raman scattering (SERS) with microfluidics is the long-term goal for reduced volume,multiplex and automation fingerprint detection of biomolecules.High sensitivity,repeatability,stability,...Integrating surface enhanced Raman scattering (SERS) with microfluidics is the long-term goal for reduced volume,multiplex and automation fingerprint detection of biomolecules.High sensitivity,repeatability,stability,reusability and real-time detection are the performance goals of Raman detection in the aqueous solution environment.Here,we reported the study on cavity mode enhanced SERS detection of both surface-adsorbed molecules and non-surface-adsorbed molecules in the solution environment.The cavity modes had important influence on the SERS enhancement,especially for the non-surface adsorbed molecules.Uniform,repeatable,reusable and real-time Raman signal detection of the non-surface adsorbed Rhodamine 6G molecules was demonstrated.Our work is an important step for the practical on-chip microfluidic Raman detection applications.展开更多
针对工程项目中地下管线开挖和迁改存在的众多问题,拟通过研究BIM(Building Information Modeling)技术在地下管线三维信息模型建模中的应用,初步解决实际中可能遇到的问题。首先通过Micosoft Visual Studio平台对BIM软件进行二次开发,...针对工程项目中地下管线开挖和迁改存在的众多问题,拟通过研究BIM(Building Information Modeling)技术在地下管线三维信息模型建模中的应用,初步解决实际中可能遇到的问题。首先通过Micosoft Visual Studio平台对BIM软件进行二次开发,建立管线系统模块,结合所创建的地下管线附属物族库,将已探明的电力、信息、给水等各类型地下管线信息数据(主要为Excel格式)与其相对应的附属物批量载入管线系统,建立地下管线三维模型。然后利用BIM软件管线碰撞检测功能及人工识别,获取有用碰撞信息,依据实际经验或现场复测,修正其中错误的管线数据,更正管线模型,使其更为真实、直观地反映地下管线的分布情况,为后续工程设计、施工、管理提供依据。展开更多
文摘AIM:To investigate the benefits of hyoscine butylbromide in polyp detection during colonoscopy by a meta-analysis of available randomized controlled trials(RCTs).METHODS:Databases,including PubMed,EMBASE,the Cochrane Library,and the Science Citation Index up to September 2013,were searched.The primary outcome was polyp detection rate,and the secondary outcome was adenoma detection rate.The metaanalysis was performed using the free software Review Manager.Differences observed between the treated and the control groups were expressed as odds ratio(OR)with a 95%confidence interval(CI).A fixedeffects model was used to pool data when statistical heterogeneity was absent.If statistical heterogeneity was present(P<0.05),a random-effects model was used.RESULTS:The initial search identified nine articles.After screening,five RCTs with a total of 1998 patients were included in this meta-analysis.Of the five studies,all described a comparison of baseline patient characteristics and showed that there was no statistically significant difference between the two groups.Among the 1998 patients,1006 received hyoscine butylbromide and 992 were allocated to the control group,and the polyp detection rate was reported.There were no significant differences between the treated and the control group(OR=1.09,95%CI:0.91-1.31,P=0.33).Four RCTs included 1882 patients,of whom948 received hyoscine butylbromide,and the adenoma detection rate was reported.There were no significant differences between the treated and the control group(OR=1.13,95%CI:0.92-1.38,P=0.24).CONCLUSION:The use of hyoscine butylbromide did not significantly improve the polyp detection rate during colonoscopy.
文摘Rich oxygen-biological activated carbon(RO-BAC)method developed from traditional BAC method is a sys-tem in which high pressure is applied to improve the oxy-gen concentration of the influent.Experiment withwastewater and the slightly deteriorated raw water showsthe system is an effective option for advanced treatmentof industry wastewater and pretreatment of slightly dete-riorated raw water.The experiment results and the in-fluential factors are discussed in this paper.
基金supported by the Ministry of Science and Technology of China (No.2017YFA0205800)the National Natural Science Foundation of China (Nos.11404247 and 11674256).
文摘Integrating surface enhanced Raman scattering (SERS) with microfluidics is the long-term goal for reduced volume,multiplex and automation fingerprint detection of biomolecules.High sensitivity,repeatability,stability,reusability and real-time detection are the performance goals of Raman detection in the aqueous solution environment.Here,we reported the study on cavity mode enhanced SERS detection of both surface-adsorbed molecules and non-surface-adsorbed molecules in the solution environment.The cavity modes had important influence on the SERS enhancement,especially for the non-surface adsorbed molecules.Uniform,repeatable,reusable and real-time Raman signal detection of the non-surface adsorbed Rhodamine 6G molecules was demonstrated.Our work is an important step for the practical on-chip microfluidic Raman detection applications.
文摘针对工程项目中地下管线开挖和迁改存在的众多问题,拟通过研究BIM(Building Information Modeling)技术在地下管线三维信息模型建模中的应用,初步解决实际中可能遇到的问题。首先通过Micosoft Visual Studio平台对BIM软件进行二次开发,建立管线系统模块,结合所创建的地下管线附属物族库,将已探明的电力、信息、给水等各类型地下管线信息数据(主要为Excel格式)与其相对应的附属物批量载入管线系统,建立地下管线三维模型。然后利用BIM软件管线碰撞检测功能及人工识别,获取有用碰撞信息,依据实际经验或现场复测,修正其中错误的管线数据,更正管线模型,使其更为真实、直观地反映地下管线的分布情况,为后续工程设计、施工、管理提供依据。
