80C196KB的串行接口设计在锅炉控制系统中的应用

本文介绍了某造汽锅炉控制系统中的组态功能参数存储器与80C196KB接口的设计。在本系统中采用了24LC64串行E2PROM存储器,不仅减少了80C196KB的口线资源,也能完成在线参数设置和修改。     

Lambda: A Cold War Polish line encryptor and the networks it served

The article elaborates the Lambda V.24/V.28 line encryptor and secure digital communications lines used by the Cold War Polish intelligence agencies.     

Constitutive modeling for hot deformation behavior of T24 ferritic steel

Hot compression tests of T24 ferritic steel were carried out using Gleeble-3500 thermo mechanical simulator in the temperature range of 1323-1473 K with the strain rate of 0.01-10 s⁻¹ and the height reduction of 60%. The flow behavior of T24 ferritic steel was characterized based on analysis of the true stress-strain curves. Constitutive equations incorporating the effects of temperature, strain rate and strain have been developed to model the hot deformation behavior of T24 ferritic steel. Material constants α, n, ln A and activation energy Q in the constitutive equations were calculated as a function of strain. The flow stress values of T24 ferritic steel predicted by the proposed constitutive equations show a good agreement with experimental results, which indicated that the developed constitutive equations could give an accurate and precise prediction for the flow stress of T24 ferritic steel.     

基于nRF24E1无线耳机的设计

低功耗、微型化是当前无线通信产品尤其是便携产品的迫切要求。文中首先简要介绍系统级RF收发芯片nRF24E1的各个功能模块及其特性。然后,设计了具有良好性能的无线耳机系统。并在此基础上给出了无线耳机的软硬件设计。最后,给出实际应用中的一些体会。     

Sandtray therapy with a 24-year-old woman in the residual phase of schizophrenia.

Sandtray therapy is a clinical tool for helping a client express and understand his or her unconscious dynamics. It utilizes a sandtray and anywhere from a few hundred to a few thousand figurines in the room for the client to select from. These figurines cover a wide range of people, situations, and objects, from the most ordinary to the mythical. The client makes a story in the sand, which the client and therapist then discuss. It is standard therapeutic wisdom that one should not use techniques involving fantasy with psychotic clients since it is typically too hard for both them and the clinician to contain those fantasies in a healthy manner. Although this is very often true, the authors offer an example of how they were able to use sandtray to great therapeutic advantage with a schizophrenic client in the residual phase of schizophrenia. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

一种无线传感器网络的设计

介绍了一种小型的无线传感器网络的设计,并具体描述了节点的硬件和软件的设计过程.并为研究大型无线传感器网络提供了一个实验平台,利用本系统配制不同的传感器可以形成用途不同的无线自组传感器网络.     

晚三叠世末期楚雄盆地云龙凹陷海相沉积的分子地球化学证据

在楚雄盆地云龙凹陷山品村和背阴山上三叠统剖面泥质烃源岩中检出较丰富的24-正丙基C30甾烷和4-甲基C30甾院。“三芴”系列分布以二苯并噻吩绝对占优为特征,除二苯并噻吩外,还检出高含量的苯并萘噻吩系列化合物。这表明．在晚三叠世未期,云龙凹陷海相沉积环境是客观存在的。图3表1参16     

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针对大位移井眼轨迹控制技术难点,文章分析了西江24－3油田4口大位移井的井眼轨迹控制技术,探讨了大位移井井眼轨迹控制技术的机理,并对大位移井井眼轨迹的控制方案进行了优化。结果表明,西江24－3油田大位移井的井眼轨迹控制技术实际上是可调和不可调滑动导向钻具组合连续导向和旋转导向工具连续导向钻井技术的综合。旋转导向工具进行连续导向钻井具有随时可控性,轨迹控制质量高,但使用成本很高。在充分掌握滑动导向钻具组合导向力变化规律的基础上,在一定范围内,这种钻具组合仍然具有很好的应用效果。技术和经济方面的因素决定了小位移时采用滑动导向钻具组合连续导向钻井技术,而在较大位移时采用旋转导向工具的控制方法是最优的轨迹控制方案。     

Pietra Serena Mining in Fiesole. Part II: Geological Situation

The results are presented for the investigations into the geological estimate of Macigno formation representing an Oligocene-Miocene turbiditic sequence of the Northern Apennines, from the coarse-graded beds of which the Pietra Serena quarry stone was mined. It is shown that the sedimentological features, the physico-mechanical properties, and the mineralogical composition of rocks govern the distinctions in the operating performances.