损伤控制性手术在肝胆外科治疗中的临床应用价值

目的:损伤控制性手术(Damage Control Operation,DCO)是针对严重创伤患者进行阶段性修复的外科策略,本文通过观察DCO在肝胆外科治疗中的效果,探讨其临床应用价值,为肝胆外科手术治疗提供参考。方法:选取2012年2月-2013年3月我院收治的90例重症肝胆外伤患者的临床资料进行回顾性分析。将所选病例随机分为对照组和DCO组,每组45例。其中对照组实施常规手术治疗,DCO组实施损伤控制性手术进行治疗。对比两组患者的手术时间,术中出血量、死亡率、术后感染及并发症等。结果:DCO组手术时间为(62.59±8.61)min,术中出血量为(306.48±23.54)m L,死亡率为20%,术后感染率为8.89%,并发症的发生率为11.11%;对照组术时间为(90.35±7.86)min,术中出血量为(600.32±34.21)m L,死亡率为53.33%,术后感染率为24.44%,并发症的发生率为35.56%;DCO组患者的各项指标均优于对照组,差异显著且具有统计学意义(P0.05)。结论:在肝胆外科治疗中采用损伤控制性手术具有明显的临床效果,不但缩短了手术时间,减少出血量,降低死亡率,提高手术成功率,而且降低了术后并发症及感染的发生率,值得推广。     

Anthropomorphic Control of a Dexterous Artificial Hand via Task Dependent Temporally Synchronized Synergies

Despite the recent influx of increasingly dexterous prostheses, there remains a lack of sufficiently intuitive control methods to fully utilize this dexterity. As a solution to this problem, a control framework is proposed which allows the control of an arbitrary number of Degrees of Freedom （DOF） through a single electromyogram （EMG） control input. Initially, the joint motions of nine test subjects were recorded while grasping and catching a cylinder. Inherent differences emerged depending upon whether the cylinder was grasped or caught. These data were used to form a distinct synergy for each task, described as the families of parametric functions of time that share a mutual time vector. These two Temporally Synchronized Synergies （TSS） were derived to reflect the task dependent control strategies adopted by the initial participants. These synergies were then mapped to a dexterous artificial hand that was subsequently controlled by two subjects with transradial amputations. The EMG signals from these subjects were used to replace the time vector shared by the synergies, enabling the subjects to perform both tasks with a dexterous artificial hand using only a single EMG input. After a ten minute training period, the subjects learned to use the dexterous artificial hand to grasp and catch the cylinder with 100.0% and 65.0% average success rates, respectively.     

腹管食螨瓢虫开发与利用

害虫抗药性及环境污染问题越来越突出，生物防治已逐步引起人们的注意和重视。我省腹管食螨瓢虫Stethorus siphonulus开发与利用是生物防治的一个典型成功例子，对控制害虫，减少环境污染，保护生态平衡，具有积极的作用。     

聚合酶链反应检测结核患者各种标本的比较

用聚合酶链反应检测１２０例结核患者各种标本阳性率为４３．３％，而非结核患者为０，说明ＰＣＲ方法敏感性好，特异性好，经检测各种标本及比较，发现以痰、脓汁，胸腹水检出阳性率高，而痰取材方便，病人乐于接受，便于临床推广。     

多倍体植株为什么高大且营养丰富

人教版《高中生物》教科书的新老版本《遗传和变异》部分均有这样一段话:“与二倍体植株相比,多倍体的植株常常是茎秆粗壮,叶片、果实和种子都比较大,糖类和蛋白质等营养物质的含量都有所增加……”。此处     

实施“先诊疗后结算”模式的医院财务内部控制

“先诊疗、后结算”服务模式是指就医者在门急诊诊疗时，可先预存押金，不必在接受每项诊疗服务时单独缴费，待所有诊疗过程结束后再统一结算。从财务的角度，详细阐述了新模式下财务的探制点及应采取的内控措施，以保证医院账款的安全，从而使新服务模式得以顺利推行。     

永磁同步电机相关技术研究

感应式异步电机伺服系统在伺服系统发展的早期得到了很好的发展和应用,但也存在着一些问题。永磁同步电机与感应式异步电机相比具有体积小、能耗低、控制性能优良等优点,永磁同步电机伺服系统的研究越来越得到重视,具有重要的理论意义和实际意义。