目的:比较不同剂量的右美托咪定骶管阻滞对儿童包皮环切术后镇痛的临床疗效差异,探讨右美托咪定的适宜剂量。方法:选取江苏省淮安市妇幼保健院120例接受包皮环切术患儿,依据随机原则分为:0.25%罗哌卡因骶管阻滞组(R组),在R组基础上+1μg...目的:比较不同剂量的右美托咪定骶管阻滞对儿童包皮环切术后镇痛的临床疗效差异,探讨右美托咪定的适宜剂量。方法:选取江苏省淮安市妇幼保健院120例接受包皮环切术患儿,依据随机原则分为:0.25%罗哌卡因骶管阻滞组(R组),在R组基础上+1μg/kg右美托咪定骶管阻滞组(DR1组),在R组基础上+2μg/kg右美托咪定骶管阻滞组(DR2组),在R组基础上+0.5μg/(kg·h)右美托咪定静脉泵注组(DVR组)。分别在苏醒时、术后2,4,6,12,16,24 h的7个时间点进行FLACC(Face,Legs,Activ it y,Cr y ing,Consolabilit y)评分;记录4组患儿手术时间、苏醒时间、苏醒时躁动评分、镇痛时间;比较4组术中不良事件和术后并发症发生率。结果:4组患儿手术时间差异无统计学意义(P>0.05);苏醒时间R组与DR1组最短,DR2组次之,DVR组最长(P<0.05);躁动评分DVR组与DR2组最短,DR1组次之,R组最长(P<0.05);镇痛时间R组最短,DR1组与DVR组次之,DR2组最长(P<0.05)。苏醒时及术后2,24 h的FLACC评分4组比较均无统计学意义(P>0.05);术后4,6,12,16h的FLACC评分,DR1,DR2,DVR3组明显低于R组(均P<0.05),DR2组FLACC评分最低(均P<0.05),而DR1组与DVR组FLACC评分比较差异均无统计学意义(均P>0.05)。DVR组易发生血流动力学不稳定,R组易发生需镇痛补救情况。结论:2μg/kg剂量右美托咪定复合罗哌卡因骶管阻滞对儿童包皮环切术后镇痛效果最好,苏醒期间躁动少,血流动力学稳定。展开更多
The LM-3C/Yuanzheng 1 launch vehicle lifted off from the Xichang Satellite Launch Center at 21:52 Beijing time on March 30,2015,putting China’s 17th Bei Dou satellite into orbit.At 03:34 on March 31,the satellite det...The LM-3C/Yuanzheng 1 launch vehicle lifted off from the Xichang Satellite Launch Center at 21:52 Beijing time on March 30,2015,putting China’s 17th Bei Dou satellite into orbit.At 03:34 on March 31,the satellite detached from the Yuanzheng 1 upper stage and entered its working orbit directly,marking the success of China’s first launch mission in year 2015.The China Academy of Launch展开更多
China’s most advanced Earth observation satellite,GF-2,was put into service on March 6,2015.The GF-2 satellite is the second of seven satellites that will be launched for the High Resolution Earth Observation project...China’s most advanced Earth observation satellite,GF-2,was put into service on March 6,2015.The GF-2 satellite is the second of seven satellites that will be launched for the High Resolution Earth Observation project mission before 2020.The project was initiated in May 2010 and GF-1 was展开更多
The LM-3C/Yuanzheng 1 launch vehicle lifted off from the Xichang Satellite Launch Center at21:52 Beijing time on March 30.The Yuanzheng1 upper stage delivered its passenger,the 17th Bei Dou navigation satellite,direct...The LM-3C/Yuanzheng 1 launch vehicle lifted off from the Xichang Satellite Launch Center at21:52 Beijing time on March 30.The Yuanzheng1 upper stage delivered its passenger,the 17th Bei Dou navigation satellite,directly to the inclined geosynchronous orbit.China’s first"space shuttle bus"Yuanzheng1 upper stage completed its inaugural flight successfully.展开更多
The LM-3C/Yuanzheng 1 launch vehicle conducted its maiden flight on March 30 successfully.The new member of the LM-3A rocket family is a four-stage rocket with 3 lower stages based on LM-3C rocket but an upper stage,w...The LM-3C/Yuanzheng 1 launch vehicle conducted its maiden flight on March 30 successfully.The new member of the LM-3A rocket family is a four-stage rocket with 3 lower stages based on LM-3C rocket but an upper stage,whose technical state changes the most compared with the other members of the family.The LM-3A rocket family steps into the 3.0 era.展开更多
China’s first 0.5 m-level high-resolution commercial remote sensing satellite,Super View-1,was launched by a LM-2D from the Taiyuan Satellite Launch Center at 11:23 Beijing time on December 28,2016.The first popular ...China’s first 0.5 m-level high-resolution commercial remote sensing satellite,Super View-1,was launched by a LM-2D from the Taiyuan Satellite Launch Center at 11:23 Beijing time on December 28,2016.The first popular science mini satellite of the country,designed and built by middle school students,piggybacked with the carrier rocket.This was the244th flight of the LM series launch vehicle.展开更多
After four years of effort,the Beijing Institute of Control Engineering completed the development of the thirdgeneration camera type rendezvous and docking sensor(CRDS)for imaging and measurement of the spaceship and ...After four years of effort,the Beijing Institute of Control Engineering completed the development of the thirdgeneration camera type rendezvous and docking sensor(CRDS)for imaging and measurement of the spaceship and the target spacecraft at short range during rendezvous and docking.CRDS consists of a camera onboard the spaceship and a target designator onboard the target spacecraft.The relative展开更多
China successfully launched GF-2(High-resolution Satellite 2)at11:15 Beijing Time on August19,2014 by a LM-4B carrier rocket from the Taiyuan Satellite Launch Center.A small Polish satellite BRITE-PL Hevelius was succ...China successfully launched GF-2(High-resolution Satellite 2)at11:15 Beijing Time on August19,2014 by a LM-4B carrier rocket from the Taiyuan Satellite Launch Center.A small Polish satellite BRITE-PL Hevelius was successfully piggybacked.This was the first Polish-Chinese space cooperation.The first attempt to communicate with the satellite was made by the Polish team when Hevelius flew over Poland for the first time.The contact with the satellite was established successfully.Tomasz Zawistowski,the leader of the Polish Hevelius program expressed that the suc-展开更多
The GF-2 satellite(High-resolution Satellite 2)was launched by a LM-4B carrier rocket on August 19,2014 from the Taiyuan Satellite Launch Center.The satellite is one of the first approved important projects in the Hig...The GF-2 satellite(High-resolution Satellite 2)was launched by a LM-4B carrier rocket on August 19,2014 from the Taiyuan Satellite Launch Center.The satellite is one of the first approved important projects in the High-resolution Earth Observation System Major Special Project(CHEOS).The GF-2 satellite will mainly serve the Ministry of Land and Resources,the Ministry of Housing and Urban-Rural Development,the Ministry of Transport and the State Forestry Administration as well as provide demonstration展开更多
A LM-5 rocket left for the Hainan Satellite Launch Center from the Tianjin Port on September 20 to conduct a rehearsal with the Chang’e 5 lunar exploration satellite which had arrived already for the milestone system...A LM-5 rocket left for the Hainan Satellite Launch Center from the Tianjin Port on September 20 to conduct a rehearsal with the Chang’e 5 lunar exploration satellite which had arrived already for the milestone system-level testing.LM-5 is a heavy lift launch vehicle with the largest thrust amongst all the LM rockets under development in China.According to the China Academy of Launch Vehicle Technology(CALT),who is responsible for the overall development of the rocket,LM-5 will conduct its first test flight in 2016.In addition,the Chang’e 5 satellite,the first third-展开更多
GF-3,China’s first C-band Synthetic Aperture Radar(SAR)satellite with multiple polarizations,has been put into use from January 23.The SAR-C satellite has a 1 m resolution.CNSA Deputy Director WU Yanhua and CASC Vice...GF-3,China’s first C-band Synthetic Aperture Radar(SAR)satellite with multiple polarizations,has been put into use from January 23.The SAR-C satellite has a 1 m resolution.CNSA Deputy Director WU Yanhua and CASC Vice President YANG Baohua attended the ceremony for the commencement of formal operation of GF-3.GF-3 is the first LEO remote sens-展开更多
The Tianzhou 1 cargo spacecraft was launched atop a LM-7 launch vehicle from the Hainan Wenchang Spacecraft Launch Site at 19:41 Beijing time on April20.About 596 seconds after the liftoff,the cargo spacecraft separat...The Tianzhou 1 cargo spacecraft was launched atop a LM-7 launch vehicle from the Hainan Wenchang Spacecraft Launch Site at 19:41 Beijing time on April20.About 596 seconds after the liftoff,the cargo spacecraft separated from the carrier rocket and entered its preset orbit,the launch mission was declared a success.Consisting of a cargo capsule and展开更多
At 19:45 Beijing time on November 5,a LM-3B/Yuanzheng 1 launch vehicle lifted off from the Xichang Satellite Launch Center,putting the first two Bei Dou 3 satellites into orbit after the separation of the rocket upper...At 19:45 Beijing time on November 5,a LM-3B/Yuanzheng 1 launch vehicle lifted off from the Xichang Satellite Launch Center,putting the first two Bei Dou 3 satellites into orbit after the separation of the rocket upper stage and the satellites.The launch opens up a new era for the global networking of the Bei Dou Navigation Satellite system(Bei Dou system),which is the final step of the"three-step development strategy"of the system.展开更多
文摘目的:比较不同剂量的右美托咪定骶管阻滞对儿童包皮环切术后镇痛的临床疗效差异,探讨右美托咪定的适宜剂量。方法:选取江苏省淮安市妇幼保健院120例接受包皮环切术患儿,依据随机原则分为:0.25%罗哌卡因骶管阻滞组(R组),在R组基础上+1μg/kg右美托咪定骶管阻滞组(DR1组),在R组基础上+2μg/kg右美托咪定骶管阻滞组(DR2组),在R组基础上+0.5μg/(kg·h)右美托咪定静脉泵注组(DVR组)。分别在苏醒时、术后2,4,6,12,16,24 h的7个时间点进行FLACC(Face,Legs,Activ it y,Cr y ing,Consolabilit y)评分;记录4组患儿手术时间、苏醒时间、苏醒时躁动评分、镇痛时间;比较4组术中不良事件和术后并发症发生率。结果:4组患儿手术时间差异无统计学意义(P>0.05);苏醒时间R组与DR1组最短,DR2组次之,DVR组最长(P<0.05);躁动评分DVR组与DR2组最短,DR1组次之,R组最长(P<0.05);镇痛时间R组最短,DR1组与DVR组次之,DR2组最长(P<0.05)。苏醒时及术后2,24 h的FLACC评分4组比较均无统计学意义(P>0.05);术后4,6,12,16h的FLACC评分,DR1,DR2,DVR3组明显低于R组(均P<0.05),DR2组FLACC评分最低(均P<0.05),而DR1组与DVR组FLACC评分比较差异均无统计学意义(均P>0.05)。DVR组易发生血流动力学不稳定,R组易发生需镇痛补救情况。结论:2μg/kg剂量右美托咪定复合罗哌卡因骶管阻滞对儿童包皮环切术后镇痛效果最好,苏醒期间躁动少,血流动力学稳定。
文摘The LM-3C/Yuanzheng 1 launch vehicle lifted off from the Xichang Satellite Launch Center at 21:52 Beijing time on March 30,2015,putting China’s 17th Bei Dou satellite into orbit.At 03:34 on March 31,the satellite detached from the Yuanzheng 1 upper stage and entered its working orbit directly,marking the success of China’s first launch mission in year 2015.The China Academy of Launch
文摘China’s most advanced Earth observation satellite,GF-2,was put into service on March 6,2015.The GF-2 satellite is the second of seven satellites that will be launched for the High Resolution Earth Observation project mission before 2020.The project was initiated in May 2010 and GF-1 was
文摘The LM-3C/Yuanzheng 1 launch vehicle lifted off from the Xichang Satellite Launch Center at21:52 Beijing time on March 30.The Yuanzheng1 upper stage delivered its passenger,the 17th Bei Dou navigation satellite,directly to the inclined geosynchronous orbit.China’s first"space shuttle bus"Yuanzheng1 upper stage completed its inaugural flight successfully.
文摘The LM-3C/Yuanzheng 1 launch vehicle conducted its maiden flight on March 30 successfully.The new member of the LM-3A rocket family is a four-stage rocket with 3 lower stages based on LM-3C rocket but an upper stage,whose technical state changes the most compared with the other members of the family.The LM-3A rocket family steps into the 3.0 era.
文摘China’s first 0.5 m-level high-resolution commercial remote sensing satellite,Super View-1,was launched by a LM-2D from the Taiyuan Satellite Launch Center at 11:23 Beijing time on December 28,2016.The first popular science mini satellite of the country,designed and built by middle school students,piggybacked with the carrier rocket.This was the244th flight of the LM series launch vehicle.
文摘After four years of effort,the Beijing Institute of Control Engineering completed the development of the thirdgeneration camera type rendezvous and docking sensor(CRDS)for imaging and measurement of the spaceship and the target spacecraft at short range during rendezvous and docking.CRDS consists of a camera onboard the spaceship and a target designator onboard the target spacecraft.The relative
文摘China successfully launched GF-2(High-resolution Satellite 2)at11:15 Beijing Time on August19,2014 by a LM-4B carrier rocket from the Taiyuan Satellite Launch Center.A small Polish satellite BRITE-PL Hevelius was successfully piggybacked.This was the first Polish-Chinese space cooperation.The first attempt to communicate with the satellite was made by the Polish team when Hevelius flew over Poland for the first time.The contact with the satellite was established successfully.Tomasz Zawistowski,the leader of the Polish Hevelius program expressed that the suc-
文摘The GF-2 satellite(High-resolution Satellite 2)was launched by a LM-4B carrier rocket on August 19,2014 from the Taiyuan Satellite Launch Center.The satellite is one of the first approved important projects in the High-resolution Earth Observation System Major Special Project(CHEOS).The GF-2 satellite will mainly serve the Ministry of Land and Resources,the Ministry of Housing and Urban-Rural Development,the Ministry of Transport and the State Forestry Administration as well as provide demonstration
文摘A LM-5 rocket left for the Hainan Satellite Launch Center from the Tianjin Port on September 20 to conduct a rehearsal with the Chang’e 5 lunar exploration satellite which had arrived already for the milestone system-level testing.LM-5 is a heavy lift launch vehicle with the largest thrust amongst all the LM rockets under development in China.According to the China Academy of Launch Vehicle Technology(CALT),who is responsible for the overall development of the rocket,LM-5 will conduct its first test flight in 2016.In addition,the Chang’e 5 satellite,the first third-
文摘GF-3,China’s first C-band Synthetic Aperture Radar(SAR)satellite with multiple polarizations,has been put into use from January 23.The SAR-C satellite has a 1 m resolution.CNSA Deputy Director WU Yanhua and CASC Vice President YANG Baohua attended the ceremony for the commencement of formal operation of GF-3.GF-3 is the first LEO remote sens-
文摘The Tianzhou 1 cargo spacecraft was launched atop a LM-7 launch vehicle from the Hainan Wenchang Spacecraft Launch Site at 19:41 Beijing time on April20.About 596 seconds after the liftoff,the cargo spacecraft separated from the carrier rocket and entered its preset orbit,the launch mission was declared a success.Consisting of a cargo capsule and
文摘At 19:45 Beijing time on November 5,a LM-3B/Yuanzheng 1 launch vehicle lifted off from the Xichang Satellite Launch Center,putting the first two Bei Dou 3 satellites into orbit after the separation of the rocket upper stage and the satellites.The launch opens up a new era for the global networking of the Bei Dou Navigation Satellite system(Bei Dou system),which is the final step of the"three-step development strategy"of the system.
