China has the biggest rare earths resource in the world,no wonder she pays much at-tention to the application of rare earth metals (REM).The application of REM in iron andsteel in China began at the end of 1950’s.The...China has the biggest rare earths resource in the world,no wonder she pays much at-tention to the application of rare earth metals (REM).The application of REM in iron andsteel in China began at the end of 1950’s.The production of REM-treated iron and steelhad been made steady progress in the period of 1980’s.The production of REM-treatediron and steel in 1989 was 1.4 million tons and 250,000 tons respectively.The interest oftreating steel with REM in China keeps growing even in these years,It comes from the nat-展开更多
China’s auto industry has gradually been transformed from the original extensive operation, to readjustment and steady growth since 1993. It has begun to concentrate on the development of new leading brands and the d...China’s auto industry has gradually been transformed from the original extensive operation, to readjustment and steady growth since 1993. It has begun to concentrate on the development of new leading brands and the diversification of its automobiles, with multi-grades and functions. The steady increase in output of automobiles is a significant feature in China’s auto industry in recent years. In the 1980s, the industry developed rapidly, with fluctuations at times.展开更多
In a world bursting with every kind of digital toy and modern convenience, many people find comfort going back in time to a simpler era. Or at least that’s what book sales suggest.
In the last 10 years, China has madeconsiderable progress in urbanization withincreasing numbers of both city and urbanpopulation. This has played a positive rolein promoting the country’s political, eco-nomic and cu...In the last 10 years, China has madeconsiderable progress in urbanization withincreasing numbers of both city and urbanpopulation. This has played a positive rolein promoting the country’s political, eco-nomic and cultural development. However,the process of urbanization has broughtalong new problems and contradictionswhich require theoretical exploration.Against this background, urban sociology,展开更多
An integration processing system of three-dimensional laser scanning information visualization in goaf was developed. It is provided with multiple functions, such as laser scanning information management for goaf, clo...An integration processing system of three-dimensional laser scanning information visualization in goaf was developed. It is provided with multiple functions, such as laser scanning information management for goaf, cloud data de-noising optimization, construction, display and operation of three-dimensional model, model editing, profile generation, calculation of goaf volume and roof area, Boolean calculation among models and interaction with the third party soft ware. Concerning this system with a concise interface, plentiful data input/output interfaces, it is featured with high integration, simple and convenient operations of applications. According to practice, in addition to being well-adapted, this system is favorably reliable and stable.展开更多
Objectives To investigate the causes, theraputic and preventive methods of com- plications associated with transcatheter occlusion of at- rial septal defect ( ASD) using the Amplatzer septal oc- cluder (ASO) in childr...Objectives To investigate the causes, theraputic and preventive methods of com- plications associated with transcatheter occlusion of at- rial septal defect ( ASD) using the Amplatzer septal oc- cluder (ASO) in children. Methods 289 cases un- derwent transcatheter closure of ASD with ASO. Com- plications occurred in 9 cases. The complications in procedure included systemic circulatory systemic air embolism in 2, pulmonary air embolism in 1, pericar- dial tamponade in 1, ASO malposition requiring emer- gency surgical removal in 1, transient atrial extrasysto- les in 1 and sizing balloon rupture in 1 case. 2 cases with postoperative complications were found in the fol- low-up studies. These included perforation of mitral valve and ASO partially dislodged. In this study, 5 children with intraoperative complication received e- mergency therapy including surgical intervention, and others needed only follow-up, as the complications were transient or asymptomatic. Results There were no children death in this study. The 5 cases who re- ceived treatment were completely healing, and the oth- ers with intra - procedure complications were also had no sequela existed. Cases with mitral valve and ASO partially dislodged were still in follow-up studies, as the 2 patients having no symptoms. Conclutions Air embolism were occurred easily in atrial septal defect cases who received ASO therapy. Complications mainly caused by inappropriate operative procedure and some complications needed emergency treatments. Follow-up studies were important to cases with transcatheter oc- clusion therapy.展开更多
Lupus erythematosus（LE） is one of autoimmune diseases which could be classified,according to the spectrum of severity,into the chronic discoid type （DLE）,profundal type（PLE）,subacute skin type（ScLE）, systemic ...Lupus erythematosus（LE） is one of autoimmune diseases which could be classified,according to the spectrum of severity,into the chronic discoid type （DLE）,profundal type（PLE）,subacute skin type（ScLE）, systemic type（SLE）,overlap type（OLE） and its subtype, i.e.,mixed connective tissue disease（MCTD）.The injury of mild LE is limited mainly at the local skin,展开更多
文摘China has the biggest rare earths resource in the world,no wonder she pays much at-tention to the application of rare earth metals (REM).The application of REM in iron andsteel in China began at the end of 1950’s.The production of REM-treated iron and steelhad been made steady progress in the period of 1980’s.The production of REM-treatediron and steel in 1989 was 1.4 million tons and 250,000 tons respectively.The interest oftreating steel with REM in China keeps growing even in these years,It comes from the nat-
文摘China’s auto industry has gradually been transformed from the original extensive operation, to readjustment and steady growth since 1993. It has begun to concentrate on the development of new leading brands and the diversification of its automobiles, with multi-grades and functions. The steady increase in output of automobiles is a significant feature in China’s auto industry in recent years. In the 1980s, the industry developed rapidly, with fluctuations at times.
文摘In a world bursting with every kind of digital toy and modern convenience, many people find comfort going back in time to a simpler era. Or at least that’s what book sales suggest.
文摘In the last 10 years, China has madeconsiderable progress in urbanization withincreasing numbers of both city and urbanpopulation. This has played a positive rolein promoting the country’s political, eco-nomic and cultural development. However,the process of urbanization has broughtalong new problems and contradictionswhich require theoretical exploration.Against this background, urban sociology,
基金Project(51274250)supported by the National Natural Science Foundation of ChinaProject(2012BAK09B02-05)supported by the National Key Technology R&D Program during the 12th Five-year Plan of China
文摘An integration processing system of three-dimensional laser scanning information visualization in goaf was developed. It is provided with multiple functions, such as laser scanning information management for goaf, cloud data de-noising optimization, construction, display and operation of three-dimensional model, model editing, profile generation, calculation of goaf volume and roof area, Boolean calculation among models and interaction with the third party soft ware. Concerning this system with a concise interface, plentiful data input/output interfaces, it is featured with high integration, simple and convenient operations of applications. According to practice, in addition to being well-adapted, this system is favorably reliable and stable.
文摘Objectives To investigate the causes, theraputic and preventive methods of com- plications associated with transcatheter occlusion of at- rial septal defect ( ASD) using the Amplatzer septal oc- cluder (ASO) in children. Methods 289 cases un- derwent transcatheter closure of ASD with ASO. Com- plications occurred in 9 cases. The complications in procedure included systemic circulatory systemic air embolism in 2, pulmonary air embolism in 1, pericar- dial tamponade in 1, ASO malposition requiring emer- gency surgical removal in 1, transient atrial extrasysto- les in 1 and sizing balloon rupture in 1 case. 2 cases with postoperative complications were found in the fol- low-up studies. These included perforation of mitral valve and ASO partially dislodged. In this study, 5 children with intraoperative complication received e- mergency therapy including surgical intervention, and others needed only follow-up, as the complications were transient or asymptomatic. Results There were no children death in this study. The 5 cases who re- ceived treatment were completely healing, and the oth- ers with intra - procedure complications were also had no sequela existed. Cases with mitral valve and ASO partially dislodged were still in follow-up studies, as the 2 patients having no symptoms. Conclutions Air embolism were occurred easily in atrial septal defect cases who received ASO therapy. Complications mainly caused by inappropriate operative procedure and some complications needed emergency treatments. Follow-up studies were important to cases with transcatheter oc- clusion therapy.
文摘Lupus erythematosus（LE） is one of autoimmune diseases which could be classified,according to the spectrum of severity,into the chronic discoid type （DLE）,profundal type（PLE）,subacute skin type（ScLE）, systemic type（SLE）,overlap type（OLE） and its subtype, i.e.,mixed connective tissue disease（MCTD）.The injury of mild LE is limited mainly at the local skin,
