This paper expounds the concept of HVAC construction,specifically analyzes the current situation of HVAC construction in construction engineering,and focuses on the key and difficult points in HVAC construction.In ord...This paper expounds the concept of HVAC construction,specifically analyzes the current situation of HVAC construction in construction engineering,and focuses on the key and difficult points in HVAC construction.In order to provide an effective reference for improving the quality of HVAC construction in the current construction engineering,some suggestions are put forward for improvement of relevant technologies involved in key and difficult points.展开更多
In order to establish more simple and effective rat orthotopic lung transplantation models, 20 rats were divided into donor and recipient groups. Rat lung transplantation models were established by using improved cuff...In order to establish more simple and effective rat orthotopic lung transplantation models, 20 rats were divided into donor and recipient groups. Rat lung transplantation models were established by using improved cuff technique. All the 10 operations were accomplished successfully. The mean operative time of recipients was 45 ± 4 min. The survival time was over 30 days after lung transplantation. The checks of X-ray were almost normal. There was no significant difference in the blood gas analysis before and after clipping the right hilum （P〉. 05）. This method is more simple, applicable and requires less time.展开更多
This paper focuses on the analysis of the aviation industry machining technology transformation,and its current development status.The entire development plan for numerical control machine tool needs to be perfected,a...This paper focuses on the analysis of the aviation industry machining technology transformation,and its current development status.The entire development plan for numerical control machine tool needs to be perfected,and the balance of numerical control technology development has to be strengthened.Additionally,the utilization rate of numerical control machines is relatively low;thus,raise the rate of equipment,numerical control,and numerical control equipment usage,and enhance the mechanical processing technology management task.Its aim is to improve aviation industry machining efficiency,which leads to a good development in China's aviation industry.展开更多
Objective To explore a new approach for improving therapeutic effects and minimizing complications of ventriculoperitoneal shunt(VPS) . Methods The lengthof and lower edge of the greater omentum were measured and anal...Objective To explore a new approach for improving therapeutic effects and minimizing complications of ventriculoperitoneal shunt(VPS) . Methods The lengthof and lower edge of the greater omentum were measured and analyzed in 28 autopsies (16 adults and 12 children) and laparoscopic surgeries. 95 cases of hydrocephalus treated by MIVPS(minimally invasive ventriculoperitoneal shunt) were retrospectively reviewed. The depth and positions展开更多
文摘This paper expounds the concept of HVAC construction,specifically analyzes the current situation of HVAC construction in construction engineering,and focuses on the key and difficult points in HVAC construction.In order to provide an effective reference for improving the quality of HVAC construction in the current construction engineering,some suggestions are put forward for improvement of relevant technologies involved in key and difficult points.
文摘In order to establish more simple and effective rat orthotopic lung transplantation models, 20 rats were divided into donor and recipient groups. Rat lung transplantation models were established by using improved cuff technique. All the 10 operations were accomplished successfully. The mean operative time of recipients was 45 ± 4 min. The survival time was over 30 days after lung transplantation. The checks of X-ray were almost normal. There was no significant difference in the blood gas analysis before and after clipping the right hilum （P〉. 05）. This method is more simple, applicable and requires less time.
文摘This paper focuses on the analysis of the aviation industry machining technology transformation,and its current development status.The entire development plan for numerical control machine tool needs to be perfected,and the balance of numerical control technology development has to be strengthened.Additionally,the utilization rate of numerical control machines is relatively low;thus,raise the rate of equipment,numerical control,and numerical control equipment usage,and enhance the mechanical processing technology management task.Its aim is to improve aviation industry machining efficiency,which leads to a good development in China's aviation industry.
文摘Objective To explore a new approach for improving therapeutic effects and minimizing complications of ventriculoperitoneal shunt(VPS) . Methods The lengthof and lower edge of the greater omentum were measured and analyzed in 28 autopsies (16 adults and 12 children) and laparoscopic surgeries. 95 cases of hydrocephalus treated by MIVPS(minimally invasive ventriculoperitoneal shunt) were retrospectively reviewed. The depth and positions
