用C++Builder语言实现对MSC/PATRAN的控制

MSC／PATRAN是著名的有限元分析软件，广泛应用于航空、航天、汽车、造船、国防等各大领域，它为用户提供了二次开发的PCL语言。对用MSC／PATRAN的PCL语言进行二次开发的过程和如何运用c＋＋Builder语言编写程序实现对MSC／PATRAN的控制作了实例说明，本实例具有普遍性，用户可参照本实例开发自己的应用程序。     

GSM无线接入网分层优化系统方案

本文主要介绍从GSM系统A接口、Abis接口、Um接口进行无线接入网络优化的系统方案设计，包括系统结构、软件结构和分层优化分析的方法。     

航空减速器弧齿锥齿轮啮合仿真模型

利用大型有限元分析软件Msc．Marc的直接约束法，建立了某航空减速器弧齿锥齿轮副多齿啮合的三维有限元非线性接触分析模型，该模型可同时实现转矩和运动的传递。基于该模型，对齿轮副进行了一个啮合周期的准静态啮合仿真分析，给出了准静态啮合时轮齿的接触状态、接触应力、齿根弯曲应力及主从动齿轮的转矩和转速随啮合位置变化的规律。分析表明，本文得到的结果非常符合实际啮合规律，也验证了模型的正确性。     

直齿圆锥齿轮啮合过程数值模拟

利用大型有限元分析软件MSC．Marc，建立了直齿雏齿轮完整齿轮齿对啮合的三雏有限元非线性接触分析模型。该模型可以同时实现运动的传递，基于该模型，在一个啮合周期内，对齿轮副进行了准静态啮合仿真模拟，并对数值模拟结果进行了分析，为齿轮修形提供了理论依据。     

Ordered mesoporous Ni/Silica-carbon as an efficient and stable catalyst for CO2 reforming of methane

Ordered mesoporous silica-carbon (MSC) were used as supports of Ni based catalysts for dry reforming of methane (DRM) reaction. The effects of preparation method and precipitant on the catalysts are investigated. The physical and chemical properties are discussed based on the H₂-TPR, FTIR, XRD, TEM, H₂-TPD and N₂ adsorption/desorption characterization. It is found that the preparation method and choice of precipitants affect the catalysts significantly in terms of the properties and catalytic performance in DRM reaction. In detail, the catalysts prepared by the precipitation method show more highly dispersed Ni particles and further better catalytic activity than the impregnated catalyst. That is attributed to the forming Ni₃Si₂O₅(OH)₄ nanoflakes in the catalyst precursors with the existence of alkaline precipitants. And this Ni₃Si₂O₅(OH)₄ species bind the support more tightly than NiO in the impregnated Ni/MSC catalyst. Moreover, the choice of precipitants also influences the form of Ni₃Si₂O₅(OH)₄ species in the catalysts. Specially, the strong electrolytic capacity of NaOH gives the most Ni₃Si₂O₅(OH)₄ nanoflakes formed in Ni-MSC-1 catalyst, which results in the most highly Ni dispersity and further highest catalytic activity. Besides, the strong interaction between the Ni₃Si₂O₅(OH)₄ species and support are also advantageous to the resist sintering and formation of carbon deposition, that is related to the good catalytic stability of catalysts.     

Nonlinear PI control for variable pitch wind turbine

Wind turbine uses a pitch angle controller to reduce the power captured above the rated wind speed and release the mechanical stress of the drive train. This paper investigates a nonlinear PI (N-PI) based pitch angle controller, by designing an extended-order state and perturbation observer to estimate and compensate unknown time-varying nonlinearities and disturbances. The proposed N-PI does not require the accurate model and uses only one set of PI parameters to provide a global optimal performance under wind speed changes. Simulation verification is based on a simplified two-mass wind turbine model and a detailed aero-elastic wind turbine simulator (FAST), respectively. Simulation results show that the N-PI controller can provide better dynamic performances of power regulation, load stress reduction and actuator usage, comparing with the conventional PI and gain-scheduled PI controller, and better robustness against of model uncertainties than feedback linearization control.     

CDK5 inhibition promotes osteoblastic differentiation of MSCs and blocks the migration of osteosarcoma MG-63 cells

CDK5 belongs to the cyclin-dependent kinase family. CDK5 is multifunctional and plays an important role in neural differentiation. However, the role of CDK5 in osteoblastic differentiation remains unclear. The present study investigated functions and molecular mechanism of CDK5 in osteoblastic differentiation. It was found that, CDK5 inhibition promoted the expression of Runx2, ALP, OCN and OPN of MSCs and the mineralization of MC-3T3E1 cells and MSCs. CDK5 inhibition enhanced the development of F-actin, nuclear localization of β-catenin and YAP, as well as the expression of RMRP RNA. When F-actin was suppressed by Blebbistatin, the nuclear localization of YAP and β-catenin, and expression of RMRP RNA as well as Runx2 and ALP were decreased. These indicate Seliciclib promotes osteoblastic differentiation mainly by F-actin. Moreover, Seliciclib also suppressed the migration of MG-63, suggesting a potential application for Seliciclib in bone defect repair and inhibition of the migration of osteosarcoma cells after osteosarcoma surgical resection.     

MSC1210Y5在CAN总线多变量智能变送器中的应用

本研制了具有CAN总线通信功能的多变量智能变送器，它具有温度、压力和差压信号的测量功能，采用美国德州仪器公司的内含多通道24位A／D转换器的MSC1210Y5单片机，具有结构简单、精度高和功耗低等优点。     

应用MSC.Dytran研究汽车保险杠碰撞过程

在低速碰撞中，保险杠对车身的安全防护作用是不容忽视的，这就需要对保险杠的耐撞性要有一个准确的评估．应用MSC．Patmn前后处理软件及MSC．Dytran分析软件，根据碰撞标准对某型号北京吉普车保险杠进行瞬态弹塑性有限元数值模拟．通过对所得其位移、加速度等的分析，得出增强保险杠耐撞性的规律。     

多功能智能信号调理器的设计与实现

本文介绍了一种基于MSC1210单片机的多功能智能信号调理器的电路设计。文章分析了系统的工作原理和软硬件实现方案。该调理器前端可接入B、E、J、K等多种热电偶信号，Pt10／100、Cu50等多种热电阻信号。由于加入了串口通信模块，该调理器具备参数在线修改、组网等功能。通过测试表明，该调理器具有精度高、易于调试等优点，是单一型调理器的优良替代品，具有广阔的应用前景。