利用8098单片机的热电偶参比端温度的全补偿方法

本文介绍在采用微机来进行热电偶测温处理时,通过查表的方法实现参比端温度的完全补偿,并完成热电势到温度的处理。     

含双二苯基膦戊烷铜(Ⅰ)配合物的合成与性质

室温,氮气氛下,铜（Ⅱ）盐和双二苯基膦戊烷（ｄｐｐｐ５）在溶液中通过还原取代反应合成了８种铜（Ⅰ）配合物（１．［Ｃｕ（ｄｐｐｐ５）］２（ＢＦ４）２,２．［Ｃｕ２（ｄｐｐｐ５）２（Ｃ８Ｈ３Ｏ２ＳＦ３）２］,３．［Ｃｕ２（ｄｐｐｐ５）３］（ＣＣｌ３ＣＯＯ）２,４．［ＣｕＢｒ（ｄｐｐｐ５）］２,５．［Ｃｕ２（ｄｐｐｐ５）Ｃｌ２］,６．［Ｃｕ２（ｄｐｐｐ５）３］（ＣＨ３ＣＯＯ）２,７．［Ｃｕ（ｄｐｐｐ５）（ＮＯ３）］,８．［Ｃｕ２（ｄｐｐｐ５）３］（ＣｌＯ４）２）。通过元素分析、红外光谱、热重、摩尔电导测定对其进行表征,表明这是一种行之有效的有机膦配合物的合成方法。     

关于人造天体运动轨迹确定的一种方法

作者在该文中,从万有引力定律出发,根据有心力的特点,再采用切坐标法很方便地推导出在地球万有引力作用下,人天体运动的轨道必是圆锥曲线,并指出由发射时初始条件能方便地进一步确定其轨迹的形状。     

贮氢合金的开发与研究进展

贮氢合金是近年来开发的一类新型高性能材料。本文介绍了贮氢合金的开发和研究的最新进展,论述了它在氢的提纯、热泵、空调、压缩机和镍—氢化物电池等高技术领域中的应用前景。     

拟塑性流体理论中一类奇异非线性边界值问题

研究了起源于拟塑性流体理论中的一类奇异非线性两点边界值问题正确的存在性和唯一性。     

基于客户/服务器结构的面向对象数据库系统ICOMBASE的实现

ＩＣＯＭＢＡＳＥ是一个面向对旬有的数据库系统,它是基于客户／服务器体系结构的,此外主要讨论了ＩＣＯＭＢＡＳＥ系统的主要实现技术,其中包括ＩＣＯＭＡＳＥ系统的体系结构,对象标识机制页面服务器ＰａｇｅＳｅｒｖｅｒ和对象客户器ＯｂｊｅｃｔＣｉｌｅｎｔ的主要实现技术。     

美施康定对癌症疼痛的镇痛效果

本组５４例重度癌痛晚期病人,给予口服美施康定３０～９０ｍｇ每１２ｈ一次治疗,有效率达９６３％（５２／５４）,完全缓解率达８７％（４７／５４）,主要副作用为便秘、恶心、呕吐、嗜睡等     

用模型方法研究灌注压对缺血区心肌血流时相分布的影响

为了研究在舒张期提高冠脉灌注压对缺血区血流时相分布的影响,建立了一个左心室壁血流灌注仿真模型。模型中正常心肌和缺血心肌中血管网都用３个支路来代表,各个支路由符合生理实际的非线性时变阻容元件组成。以６条雄性犬的左心室压和主动脉压的实测数据作为输入进行仿真,得出了符合已有实验观察的结论。结果表明：舒张期提高灌注压对缺血心肌的血流灌注有明显改善。     

Electrophysiological research of synapse formation from beginning to maturity

The development of synapses is an important question in neurobiology. We employ patchclamp technique to record MEPCs and EPCs of myoballs inXenopus cell culture. The rate of EPC/MEPC is related with synapses maturation. Accordingly, we define the mature synapses as those whose rate of presynaptic membrane ’ s EPC to MEPC is more than 8. The process of maturation needs about 2–5 h after neuntes contact with myoballs. We divide the development of synapses into three stages: young, developing and mature. The neurotransmitters stack gradually and increase by hundreds of times along with young synapses growing into maturity. So the process of synapses maturation should include presynaptic membrane specialization, postsynaptic membrane specialization and neurotransmitters stack.     

Relationship between the partitioning properties of motoneuron recruitment and the needle feeling propagation

Histological and physiological studies indicated that most skeletal muscles can be divided into a series of relatively independent sub-volumes: "neuromuscular compartments" and the partitioning property of the muscle result in the localization of muscle reflex. In the present experiment we studied the recruitment properties of medial gastracnemius (MG) muscle motoneuron pool of decerebrate cat with two kinds of local mechanical stimulation: local stretch and acupuncture-like stimuli. The results indicate that: (ⅰ) there is an obvious property of localization of recruitment activity, only the MNs which innervate the stimulated compartment were recruited by weaker and shorter stimuli; (ⅱ) recruitment activity spread to those MNs which supply the adjacent and distal compartments during the strength of stimulation or duration of the stimulation was increased; and (ⅲ) the recruitment property of muscle activity elicited by the local mechanical stimulation is thought similar to that of "needle feeling" along the meridian pathway during stimulation of acupuncture point.