Hyphantria cunea （Drury） is a severe invasive pest in Beijing. It is important to understand the reason for its successful invasion and outbreak. Accordingly, this study was tailored to assess molecular variation an...Hyphantria cunea （Drury） is a severe invasive pest in Beijing. It is important to understand the reason for its successful invasion and outbreak. Accordingly, this study was tailored to assess molecular variation and genetic relationships among three H. cunea populations in Beijing and one population from Sanhe in Hebei Province as control （totally 100 individuals）. A silver-labeled amplified fragment length polymorphisms （AFLP） DNA profiling method was used to detect the genetic diversity and relationship among the populations. Five EcoRI and MseI primer combinations produced a total of 171 （91.2% polymorphic） informative fragments. The average Nei＇s genetic diversity in four H. cunea populations analyzed by Popgene3.2 software was 0.2287, and the level of genetic diversity ranked in the order BDR （reared population in Daxing, Beijing） 〉 BDN （natural population in Daxing, Beijing） 〉 HSN （natural population in Sanhe, Hebei Province） 〉 BFN （natural population in Fengtai, Beijing）. The value of genetic differentia- tion among populations was 0.3321, and the gene flow was 1.0057. The genetic distance between these populations ranged from 0.0735 to 0.3309, 0.0531 on average. The result of UPGMA （unweighed pair group method with arithmetic averages） clustering showed that populations BFN and HSN were closely related, while BFN and BDN had the largest genetic distance. These results indicate that H. cunea populations in Beijing might originate from several areas.展开更多
Objective: This study evaluated the effectiveness of acupuncture treatment on postoperative pain in patients with degenerative lumbar spine disease, and explored the relationship between the postoperative analgesic ef...Objective: This study evaluated the effectiveness of acupuncture treatment on postoperative pain in patients with degenerative lumbar spine disease, and explored the relationship between the postoperative analgesic effect of acupuncture and the sensation of acupuncture experienced by the patients.Methods: This retrospective study analyzed the medical records of 97 patients who had undergone an operation by the same surgeon due to degenerative lumbar disease. These patients were divided into acupuncture group(n = 32), patient-controlled analgesia(PCA) group(n = 27), and oral analgesia group(n = 38) according to the different postoperative analgesic methods. During their hospitalization, patients completed daily evaluations of their pain using a visual analogue scale(VAS), and injection times of supplemental meperidine were recorded. Also, the Chinese version of the Massachusetts General Hospital Acupuncture Sensation Scale(C-MASS) was used in the acupuncture group.Results: Each of the three treatment groups showed significant reductions in postoperative pain, as shown by reduced VAS scores. The acupuncture group, however, had less rebound pain(P < 0.05) than the other two groups. Both the acupuncture and PCA groups experienced acute analgesic effects that were superior to those in the oral analgesia group. In addition, the higher the C-MASS index on the second day after surgery, the lower the VAS score on the fourth day after surgery. There was also a significant difference in the“dull pain” in the acupuncture sensation.Conclusion: The results demonstrated that acupuncture was beneficial for postoperative pain and discomfort after simple surgery for degenerative spinal disease. It is worth noting that there was a disproportionate relevance between the patient’s acupuncture sensation and the improvement of pain VAS score.展开更多
Field programmable gate arrays （FPGAs） have wide and extensive applications in many areas. Due to programmable feature of FPGAs, faults of FPGAs can be easily tolerated if fault sites can be located. A hardware/soft...Field programmable gate arrays （FPGAs） have wide and extensive applications in many areas. Due to programmable feature of FPGAs, faults of FPGAs can be easily tolerated if fault sites can be located. A hardware/software （HW/SW） co-verification technique for FPGA test is proposed in this paper. Taking advantage of flexibility and observability of software in conjunction with high-speed simulation of hardware, this technique is capable of testing each input/output block （IOB） and configurable logic block （CLB） of FPGA automatically, exhaustively and repeatedly. Fault cells of FPGA can be positioned automatically by the proposed approach. As a result, test efficiency and reliability can be enhanced without manual work.展开更多
基于位置的服务LBS（Location Based Services）中海量的信息都与地理信息息息相关,其中的核心服务是导航和地图服务。针对当前的卫星定位系统和位置服务提供商还没有足够高的精确度,LBS对小区域下如居民小区、校园、公园、旅游场所等...基于位置的服务LBS（Location Based Services）中海量的信息都与地理信息息息相关,其中的核心服务是导航和地图服务。针对当前的卫星定位系统和位置服务提供商还没有足够高的精确度,LBS对小区域下如居民小区、校园、公园、旅游场所等支持还有很多问题亟待解决。该文以校园为例,在Android手机操作系统平台上,根据校园内学生和教师群体的生活规律设计并实现了基于LBS的校园个性化客户端,以期为校园内的广大师生群体提供个性化、多样化、便捷化的位置和功能服务。展开更多
基金funded by the Beijing Municipal Education Commission Research Base,National Natural ScienceTechnology Support Plan of China "The Technology Research and Demonstration of Forestry-Paper Integration Project" (2006BAD32B)Program for Changjiang Scholars Innovative Research Team in Universities (PCSIRT0607)
文摘Hyphantria cunea （Drury） is a severe invasive pest in Beijing. It is important to understand the reason for its successful invasion and outbreak. Accordingly, this study was tailored to assess molecular variation and genetic relationships among three H. cunea populations in Beijing and one population from Sanhe in Hebei Province as control （totally 100 individuals）. A silver-labeled amplified fragment length polymorphisms （AFLP） DNA profiling method was used to detect the genetic diversity and relationship among the populations. Five EcoRI and MseI primer combinations produced a total of 171 （91.2% polymorphic） informative fragments. The average Nei＇s genetic diversity in four H. cunea populations analyzed by Popgene3.2 software was 0.2287, and the level of genetic diversity ranked in the order BDR （reared population in Daxing, Beijing） 〉 BDN （natural population in Daxing, Beijing） 〉 HSN （natural population in Sanhe, Hebei Province） 〉 BFN （natural population in Fengtai, Beijing）. The value of genetic differentia- tion among populations was 0.3321, and the gene flow was 1.0057. The genetic distance between these populations ranged from 0.0735 to 0.3309, 0.0531 on average. The result of UPGMA （unweighed pair group method with arithmetic averages） clustering showed that populations BFN and HSN were closely related, while BFN and BDN had the largest genetic distance. These results indicate that H. cunea populations in Beijing might originate from several areas.
文摘Objective: This study evaluated the effectiveness of acupuncture treatment on postoperative pain in patients with degenerative lumbar spine disease, and explored the relationship between the postoperative analgesic effect of acupuncture and the sensation of acupuncture experienced by the patients.Methods: This retrospective study analyzed the medical records of 97 patients who had undergone an operation by the same surgeon due to degenerative lumbar disease. These patients were divided into acupuncture group(n = 32), patient-controlled analgesia(PCA) group(n = 27), and oral analgesia group(n = 38) according to the different postoperative analgesic methods. During their hospitalization, patients completed daily evaluations of their pain using a visual analogue scale(VAS), and injection times of supplemental meperidine were recorded. Also, the Chinese version of the Massachusetts General Hospital Acupuncture Sensation Scale(C-MASS) was used in the acupuncture group.Results: Each of the three treatment groups showed significant reductions in postoperative pain, as shown by reduced VAS scores. The acupuncture group, however, had less rebound pain(P < 0.05) than the other two groups. Both the acupuncture and PCA groups experienced acute analgesic effects that were superior to those in the oral analgesia group. In addition, the higher the C-MASS index on the second day after surgery, the lower the VAS score on the fourth day after surgery. There was also a significant difference in the“dull pain” in the acupuncture sensation.Conclusion: The results demonstrated that acupuncture was beneficial for postoperative pain and discomfort after simple surgery for degenerative spinal disease. It is worth noting that there was a disproportionate relevance between the patient’s acupuncture sensation and the improvement of pain VAS score.
基金supported by Key Techniques of FPGA Architecture under Grant No.9140A08010106QT9201the support from UESTC Youth Funds
文摘Field programmable gate arrays （FPGAs） have wide and extensive applications in many areas. Due to programmable feature of FPGAs, faults of FPGAs can be easily tolerated if fault sites can be located. A hardware/software （HW/SW） co-verification technique for FPGA test is proposed in this paper. Taking advantage of flexibility and observability of software in conjunction with high-speed simulation of hardware, this technique is capable of testing each input/output block （IOB） and configurable logic block （CLB） of FPGA automatically, exhaustively and repeatedly. Fault cells of FPGA can be positioned automatically by the proposed approach. As a result, test efficiency and reliability can be enhanced without manual work.
文摘基于位置的服务LBS（Location Based Services）中海量的信息都与地理信息息息相关,其中的核心服务是导航和地图服务。针对当前的卫星定位系统和位置服务提供商还没有足够高的精确度,LBS对小区域下如居民小区、校园、公园、旅游场所等支持还有很多问题亟待解决。该文以校园为例,在Android手机操作系统平台上,根据校园内学生和教师群体的生活规律设计并实现了基于LBS的校园个性化客户端,以期为校园内的广大师生群体提供个性化、多样化、便捷化的位置和功能服务。
