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Solute redistribution and Rayleigh number in the mushy zone during directional solidification of Inc
The interdendritic segregation along the mushy zone of directionally solidified superalloy Inconel 718has been measured ......
Apical Root Resorption in Maxillary Incisors When Employing Micro-implant and J-hook Headgear Anchor
This study evaluated,over a 4-month study period,the amount of apical root resorption occurring in maxillary central inc......
In the paper,the added tangential nonlinear springs are introduced to represent the effects of one-way and two-way shear......
Critical chain construction with multi-resource constraints based on portfolio technology in South-t
Recently,the critical chain study has become a hot issue in the project management research field.The construction of th......
3.2 Wetting Layer Tailored by Epitaxial Stress Most epitaxial films wet the substrates to var-ying degrees in heteroepit......
Pedestrian crowd in public buildings is usually a hidden trouble.The more serious the crowd,the higher the accident risk......
This paper employs a first-principles total-energy method to investigate the theoretical tensile strengths of bcc and fc......
Thermal residual stresses in W fibers/Zr-based metallic glass composites were measured by in situ high energy synchrotro......
An optimization method for the consistent evaluation of two Rayleigh damping coefficients is proposed. By minimizing an ......
On August 8 to 10,2014,the final evaluation stage of the 16th“FOSECO Cup”for excellent foundry papers(2013),organized ......
One of the main directions in practical application study of excimer laser lithog-raphy is broadband excimer laser lith......
Spark plasma sintering (SPS) is an advanced sintering technology that has been recently developed in the world. Contrast......
The results of X-ray diffraction (XRD) and high resolution electron microscopy (HREM) show that ball milling at room te......
This paper outlines the application of wavelet analysis method to computering wear par-ticles image processing and intr......
A three-dimensional rigid body on the shape of a parallelepiped is modelled in order to rock on a side or a vertex of th......
The particle exhaust of the upper tungsten and lower carbon divertors in EAST has been preliminarily studied during the ......
Sea level variability in the East China Sea (ECS) was examined based primarily on the analysis of TOPEX/Poseidon altimet......
This paper presents a design of boundary controllers implemented at the top end for global stabilization of a marine ris......
Beijing Theater,with a capacity of 1,000 seats,is a multi-purpose theater mainly for dramatic performances.To meet the a......
The electromagnetic field (EMF) is one of many environmental factors, which earth creatures are exposed to. There are ma......
Based on the stress distribution characteristics of rock burst multiple sites,the criterion of horizontal stress inducin......
针对车辆横向控制数学模型的非线性和时变特性,在输入输出线性化方法和模糊系统逼近理论的基础上,利用自适应算法实时调整更新模糊......
以大耳蝠耳廓外形参数为基础,提出了一种由线、面结构得到的简化斜截式喇叭模型,应用有限单元法对该模型进行数值仿真计算,分析了......
Based on the stress distribution characteristics of rock burst multiple sites,the criterion of horizontal stress inducin......
根据蒜瓣形状的特点,应用数字图像处理技术,通过对蒜瓣图像进行转换、分割以及膨胀,以Visual C＋＋6.0为平台开发了蒜瓣蒜尖朝向的识别......
本文研究江淮下游8个大豆品种(系)双列杂交F_2至F_4表现的亲本配合力;证实F_2与F_3间有产量配合力与世代互作;评选出7206—934、诱......
提出了一种基于运动估计和边缘检测的隔行到逐行扫描图象的变换技术，这种方法对隔行到逐行扫描图象变换分成３种模式，并且提出了适合于......
为了有效防止车厢内有害气体在隔离、运送途中外泄污染周围环境并改善车厢内环境,利用CFD数值模拟方法对某负压车厢内的气流的运动......
首先进行了边缘检测系统结构设计,建立了图像邻域彩色变化矢量场的数理模型,提出了用图像邻域彩色变化方向锐度描述图像边缘,进而......
介绍了静观ZK1号地热井施工概况和设备机具选择,简述了分层钻进措施：采用＂三开两固＂成井,各次钻具配套,泥浆性能指标,固井工艺措施及......
针对收发共址多输入多输出(Multiple-Input Multiple-Output,MIMO)雷达的低计算复杂度波达方向(Direction of Arrival,DOA)估计问......
目前我国油气资源勘探难度不断加大,前新生代海相碳酸盐岩残留盆地已成为我国油气资源二次创业的重点突破对象,本文主要阐述了国内......
依托丰富的煤炭资源,我国成为世界上最大的煤基活性炭生产国。简要回顾了我国煤基活性炭工业的起源和发展历程,介绍了煤基活性炭的......
对广域方向纵联保护算法进行深入研究,得到一种广域继电保护算法,该算法的原理是对正序故障方向进行比较：利用智能电子设备IED（Intel......
针对遥感图像的边缘检测尤其是彩色遥感图像的边缘检测上存在诸多的不足,为了减少噪声,提高目标提取的精确度与完整性,提出一种基......
通过对本校学生借阅4类书籍（一般书籍、专业书籍、外语书籍和计算机书籍）次数调查,分别探讨了文理科大学生的学习取向,并初步得出4点......
针对单基地多输入多输出（multiple input multiple output,MIMO）雷达波达方向（direction of arrival,DOA）估计问题,该文提出一种低复杂......
介绍了复杂环境下爆破拆除一栋八角高楼的工程实例。通过增大爆破切口高度及采用单向折叠定向爆破的方式,有效地控制了大楼的倒塌......
针对电子对抗领域中多传感器协同定位精度差、时延高、覆盖率低等缺点,提出了一种有效锚节点选取算法EAS,该算法可根据节点所处环......
棉花与锦葵科等植物的子叶，真叶、花梗与花瓣的一些形态特征有差十分密切的互相关连，据对棉花与锦葵科及十字花科、茄科，苋科、藜科共......
论述了低截获概率(LPI)雷达降低反辐射导弹(Anti—Radiation—Missile—ARM)的作用距离和诱饵致ARM失效的原理,并指出诱饵对ARM威......
针对柱面共形阵列天线的DOA估计问题,充分利用柱面载体的单曲率特性,通过合理的阵元设置,基于子空间原理,提出了盲极化2DDOA估计算......
采用非对称立体结构,利用其表面在微米尺度范围上存在的表面曲率变化及其各向异性的梯度特征,作用于喷墨打印在结构上方的TIPS-并......
Mg-Si合金是一种获得高阻尼高强度性能的潜在合金系。文中详细介绍了Mg-Si 合金的阻尼机制，综述了现有铸造Mg-Si阻尼合金存在的问题......
通过对钢铁企业专用线铁路运输的特点及其局限性的分析，结合铁路在攀钢集团江油长城特殊钢有限责任公司公司铁路运输现状的特点，提出......
采用速度传感器阵列提出了一种近场声源定位（距离和DOA估计）的新算法.与目前提出的其它算法相比,本文算法有以下几个优点：无需计算高......
介绍中原油田卫侧317-7井小井眼侧钻的施工情况,分析了该井轨迹控制的特点、钻具组合特征、完井方法等,指出目前小井眼侧钻技术中......
运用定向控制爆破技术成功拆除了复杂环境下的钢筋砼水泥立窑。结合爆破环境和爆破要求，根据钢筋的失稳条件和定向倒塌原理确定爆破......
主要介绍了80m高钢筋混凝土烟囱定向倒塌爆破拆除的情况，阐述了烟囱的结构、爆破方案确定、爆破参数、起爆网路、安全设计和爆破效......
利用波动声学基础,从理论上初步探讨线性阵列扬声器系统作为在大型场地举行的西方音乐会扩声系统的理论可实现性。......
