大型医药物流中心流程优化研究

为提高医药物流中心的运作效率，提出了面向大型医药物流中心的流程优化方法，该方法针对医药物流中心普遍存在的问题，以流程图为载体，依照诊断、分析、应用、反馈和改进的过程对医药物流中心物流流程做系统化的改造，使流程简明规范、信息化水平提高，从而使得流程效率和服务水平均得到提高，降低了物流费用。文中给出了流程优化的具体步骤。     

关于商品包装物开发利用途径的研究与探讨

针对商品包装物消耗大量原材料、能源及物化劳动和活劳动的现状,为实施持续发展战略,为人类生存留有空间、为子孙后代造福,就商品包装物所用材料的开发与利用途径问题提出了行之有效的措施,为商品包装物的开发利用展示了新的途径.     

Synthesis and Characterization of Nanocapsules of a-Fe(NiCoAl) Solid-solution

α-Fe(NiCoAl) solid-solution nanocapsules were prepared with pure powders of Fe, Ni, Co and Al by the plasma arc-discharging using a copper crucible. The shapes of the nanocapsules are in polyhedrons with the core/shell structure. The body centered cubic (BCC) phase is formed in the core. The size of the nanocapsules is in the range of 10~120 nm and the thickness of the shell is 4~11 nm. Saturation magnetization Js=150 Am2/kg and coercivity iHC=24.3 kA/m are achieved for the nanocapsules.     

低压省煤器在电站锅炉中的应用

针对排烟损失大的问题，某些电厂在电除尘器出口加装低压省煤器，用来加热凝结水或热网补水，从而吸收烟气热量，实际测试结果表明，对于节能降耗和保证安全运行均起到了重要作用。     

Comments on “Quadratic stabilization of continuous timesystems with state-delay and norm-bounded time-varyinguncertainties”

In the above mentioned paper by Mahmoud-Muthairi (ibid. vol.39 (1994)) a sufficient condition for memoryless stabilization of a class of uncertain linear systems with a variable-state delay and norm-bounded time-varying uncertainties is derived in terms of an algebraic Riccati equation. This Riccati equation depends on several free matrix variables, and a subsequent result in the paper, Theorem 2, states that failure or success of the stabilization algorithm is independent of the selection of these matrix variables. In this paper, we give a counterexample to this Theorem 2 as well as providing a fix     

我国发展风力发电的若干问题及对策

根据国内风力发电发展现状，研究分析了风电发展存在的若干问题和影响因素，提出相应的措施和对策。     

基于DSP非同步控制的新型软起动系统

提出了一种基于自关断器件拓扑结构主电路的新型软起动系统．该系统实现了触发脉冲的 非同步控制，而且能够消除定子电流的低次谐波。与晶闸管控制的软起动相比，新型软起动控制简单，节能效果突出。该系统采用DSP和单片机构成的双CPU结构，实现数据处理和系统监控的并行处理，提高系统的响应速度和可靠性。结果表明，该系统具有很好的可行性和广阔的应用前景。     

铜及铜合金中铅的形态与热加工

文章描述了铅在双相铜合金中的存在形态及在热加工过程中的变化形为。讨论了含铅双相铜合金的热加工过程产生"热脆"的机理,为合理地选择和制定热加工工艺提出了相应的措施。     

Structural and electrochemical properties of vanadium oxide thin films grown by d.c. and r.f. reactive sputtering at room temperature

Vanadium oxide thin films were grown at room temperature by direct current and radio-frequency reactive sputtering systems to compare the structural and electrochemical properties. Rutherford backscattering spectrometry and Fourier transform infrared measurements reveal that the composition of the as-deposited films consists of the V₂O₅ phase regardless of the deposition methods. Wide-angle X-ray diffraction measurements show that the crystallinity of the as-deposited V₂O₅ films is different depending on the deposition method. Films deposited by direct current reactive sputtering were amorphous, whereas films deposited by radio-frequency reactive sputtering were crystalline. Scanning electron microscopy measurements show that the V₂O₅ films grown by radio-frequency reactive sputtering had a large grain size but the films grown by direct current reactive sputtering were amorphous. Charge–discharge measurements taken at room temperature with a constant current clearly indicate that the films grown by direct current sputtering demonstrated typical amorphous behavior, whereas the V₂O₅ films grown by radio-frequency sputtering demonstrated the discharge behavior of crystalline V₂O₅. The origin of the structural and electrochemical properties of film grown by radio-frequency reactive sputtering is a self-bias effect. The self-bias effect induces ion bombardment during the growth of vanadium oxide thin film. These results suggest that direct current reactive sputtering is more desirable for growing amorphous V₂O₅ thin film than radio-frequency reactive sputtering.     

矿山生产成本的灰关联分析

提出了对矿山生产成本进行灰关联分析的方法与步骤,通过实例分析,找出了影响矿山生产成本的关键因素,从而得到提高矿山经济效益的有效途径。