To develop novel β-type biomedical titanium alloys,a series of Ti-15Mo-xNb alloys（x=0,5,10 and 15,mass fraction in%） were designed and prepared by using vacuum arc melting method.The present study focused on the ef...To develop novel β-type biomedical titanium alloys,a series of Ti-15Mo-xNb alloys（x=0,5,10 and 15,mass fraction in%） were designed and prepared by using vacuum arc melting method.The present study focused on the effect of Nb addition on the microstructure,mechanical properties and castability of Ti-15 Mo alloy.Phase analysis and microstructure observation show that all the alloys consist of single β phase and the equiaxed β grain is refined with increasing Nb content.These β-type Ti-15Mo-xNb alloys exhibit good plasticity and rather low compression elastic modulus（in the range of 18.388-19.365 GPa）.After Nb addition,the compression yield strength of the alloys increases.With increasing Nb content,the micro-hardness of the alloys decreases.The alloys exhibit obvious fibrous strip microstructure after cold compression deformation.The castability test shows that the castability of the alloys after Nb addition decreases and that of the Ti-15 Mo alloy is the highest（92.01%）.展开更多
目的:研究黑龙江省不同医疗机构之间新型协同服务模式,加强垦区各级医疗机构的信息化基础建设,建立基于医学影像存档与通信传输系统(Picture Archiving and Communications System,PACS)的数字化医疗区域。方法:将哈尔滨医科大学附属第...目的:研究黑龙江省不同医疗机构之间新型协同服务模式,加强垦区各级医疗机构的信息化基础建设,建立基于医学影像存档与通信传输系统(Picture Archiving and Communications System,PACS)的数字化医疗区域。方法:将哈尔滨医科大学附属第四医院现有的影像数据归档,集成到IMPAX PACS数据中心(Internet Data Center,IDC),作为整个区域医疗的影像中心。通过IDC交换平台的延伸覆盖,以及医院信息系统(Hospital Information System,HIS)与XERO集成,可经网络调阅IDC中的影像,实现远程影像会诊。结果:建立基于IMPAX PACS的区域医疗;工程覆盖1家省会大医院和垦区2家综合性医院、5家二级医院、11家农场医院,实现联网医院间的影像学远程会诊。结论:PACS区域远程医疗系统的建立为基层百姓就医提供方便,影像学远程会诊可有效避免影像学重复检查,双向转诊、信息共享给患者带来更多的便利和实惠,具有巨大的社会效益。展开更多
尝试应用影像存储及传输系统(Picture Archiving and Communication System,PACS),对我院临床本科生进行影像学实习教学。首先应用PACS建立电子影像学图片库,学生在PACS联网的计算机上学习教学内容,通过定期随堂测验、期末考试和课后问...尝试应用影像存储及传输系统(Picture Archiving and Communication System,PACS),对我院临床本科生进行影像学实习教学。首先应用PACS建立电子影像学图片库,学生在PACS联网的计算机上学习教学内容,通过定期随堂测验、期末考试和课后问卷调查评估PACS辅助教学的教学效果,对PACS辅助教学在医学影像学实习教学中的应用价值进行探讨。与以往传统医学影像学实习教学方法相比,PACS辅助教学在医学影像学实习教学中具有激发学生学习主动性、提高学习效率和学生读片能力的优越性,显著提高教学效果和教学质量,对促进医学影像学教学改革具有重要意义。展开更多
基金Project(QN2010-04)supported by the Youth Startup Fund of the Second Affiliated Hospital of Harbin Medical University,ChinaProject(2010-156)supported by the Medical Scientific Research Foundation of Heilongjiang Province Health Department,ChinaProject(HIT.NSRIF.2012002)supported by the Fundamental Research Funds for the Central Universities,China
文摘To develop novel β-type biomedical titanium alloys,a series of Ti-15Mo-xNb alloys（x=0,5,10 and 15,mass fraction in%） were designed and prepared by using vacuum arc melting method.The present study focused on the effect of Nb addition on the microstructure,mechanical properties and castability of Ti-15 Mo alloy.Phase analysis and microstructure observation show that all the alloys consist of single β phase and the equiaxed β grain is refined with increasing Nb content.These β-type Ti-15Mo-xNb alloys exhibit good plasticity and rather low compression elastic modulus（in the range of 18.388-19.365 GPa）.After Nb addition,the compression yield strength of the alloys increases.With increasing Nb content,the micro-hardness of the alloys decreases.The alloys exhibit obvious fibrous strip microstructure after cold compression deformation.The castability test shows that the castability of the alloys after Nb addition decreases and that of the Ti-15 Mo alloy is the highest（92.01%）.
文摘目的:研究黑龙江省不同医疗机构之间新型协同服务模式,加强垦区各级医疗机构的信息化基础建设,建立基于医学影像存档与通信传输系统(Picture Archiving and Communications System,PACS)的数字化医疗区域。方法:将哈尔滨医科大学附属第四医院现有的影像数据归档,集成到IMPAX PACS数据中心(Internet Data Center,IDC),作为整个区域医疗的影像中心。通过IDC交换平台的延伸覆盖,以及医院信息系统(Hospital Information System,HIS)与XERO集成,可经网络调阅IDC中的影像,实现远程影像会诊。结果:建立基于IMPAX PACS的区域医疗;工程覆盖1家省会大医院和垦区2家综合性医院、5家二级医院、11家农场医院,实现联网医院间的影像学远程会诊。结论:PACS区域远程医疗系统的建立为基层百姓就医提供方便,影像学远程会诊可有效避免影像学重复检查,双向转诊、信息共享给患者带来更多的便利和实惠,具有巨大的社会效益。
文摘尝试应用影像存储及传输系统(Picture Archiving and Communication System,PACS),对我院临床本科生进行影像学实习教学。首先应用PACS建立电子影像学图片库,学生在PACS联网的计算机上学习教学内容,通过定期随堂测验、期末考试和课后问卷调查评估PACS辅助教学的教学效果,对PACS辅助教学在医学影像学实习教学中的应用价值进行探讨。与以往传统医学影像学实习教学方法相比,PACS辅助教学在医学影像学实习教学中具有激发学生学习主动性、提高学习效率和学生读片能力的优越性,显著提高教学效果和教学质量,对促进医学影像学教学改革具有重要意义。
