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Search Results: 1 - 10 of 304756 matches for " 王新喜 "
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黄河花园口旅游景区深层开发定位及策略
余汉清,新喜
人民黄河 , 2000,
Abstract:
三峡库区地质灾害与防治对策
新喜,唐辉明,鹏飞
科技进步与对策 , 2003,
Abstract: 在研究三峡库区地质灾害的特征及分布规律的基础上,提出了库区地质灾害的防治对策。指出建立三峡库区地质灾害信息系统、地质灾害监测系统和地质灾害防治理论的研究是解决地质灾害防治的根本途径。三峡库区地质灾害防治对策
煤岩有机显微组分分离与应用的现状与分析
Present Situation and Analysis of Macerals Separation and Utilization Technologies
 [PDF]

何鑫,新喜
Clean Coal and Energy (CCE) , 2016, DOI: 10.12677/CCE.2016.44004
Abstract:
随着石油资源的紧缺和煤炭加工带来的环境污染日趋严重,煤炭资源的清洁和高效利用成为当下的热点课题。煤岩有机显微组分可以将煤中有用的有机质主要分为三种:壳质组、镜质组和惰质组。分离煤中显微组分并根据显微组分不同的特性进行煤炭深加工如热解、气化和液化,可以有效提高煤炭利用率且缓解石油资源短缺的现状。本文对当前煤岩有机显微组分的分离和应用技术研究进展进行了介绍,分析了其发展方向和前景。
Along with serious environmental pollution caused by coal combustion as well as the scarcity of oil resource, high efficient and clean utilization of coal resource has becoming the immediate research focus. The useful organic matter in coal can be classified into three coal maceral types: exinite, vitrinite and inertinite. The separation and the further processing technologies such as pyrolysis, gasification and liquefaction of macerals according their different features could improve coal utilization rate effectively and lighten oil resource’s shortage. In this paper, the research progress of macerals separation and utilization technique is introduced and the further development and improvement are analyzed.
铜 基 催 化 剂 上 甲 醇 水 蒸 汽 重 整 制 氢Ⅰ. 催 化 剂 组 成 的 影 响
赵 宁,尹燕华,新喜,牛成德
分子催化 , 2009,
Abstract: 在 H2 O / CH3 OH 摩 尔 比 为 1. 3、 液 空 速 为 1. 5 h- 1 、 反 应 温 度 为 220 ℃ 条 件 下 , 对 甲 醇 水 蒸 汽 重 整 制 氢 Cu /Zn / ( Fe, Mn, Cr) / AlO 催 化 剂 性 能 进 行 了 考 察 . 研 究 表 明 , Cr 的 加 入 可 以 显 著 提 高 甲 醇 的 转 化 率 , 降 低 出 口 气 体中 的 CO 含 量 . 与 Cu60 Zn30 Al10 催 化 剂 相 比 , Cu30 Zn15 Cr45 Al10 催 化 剂 出 口 气 体 中 CO 的 含 量 降 低 54% , 甲 醇 的 转 化 率 提 高 约 20% .
基于信息散度的雷达/红外数据关联算法
孔云波,华兵,新喜,鹿传国
红外与激光工程 , 2014,
Abstract: 针对基于多维分配模型的雷达与红外数据关联算法在构造关联代价函数时未考虑最大似然估计引入的误差的一问题,提出了一种基于信息散度的雷达与红外数据关联算法.该算法首先利用无迹变换获得伪量测的统计信息.然后在构造关联代价函数时,将真实量测数据的极大后验分布和伪量测的概率密度函数的之间的Kullback-Leibler散度(KLD)作为关联代价,继而代入多维分配模型求解关联.最后进行了仿真分析,结果表明该算法具有良好的关联性能,其关联代价可更精准地反映数据关联的可能性程度.
中子斩盘负载分析和运动控制器设计
庞蓓蓓,,黄朝强,新喜
强激光与粒子束 , 2015,
Abstract: ?为了实现中子波段调节斩盘相位的高速、高精度控制,分析了系统的负载特性并建立了由斩盘实体和驱动电机构成的二质量系统模型。设计了电流、速度和位置串级控制器,根据控制系统的工程设计方法和现代控制理论给出了3个调节器结构选择及参数整定的具体方法。结果表明:在中子斩盘以旋转频率27.5hz工作时,其相位控制扰动误差为-1.32525~1.32525μs,稳态误差为-2.583μs,符合中子斩波器应用要求。
企业人力资本价值计量模式探讨
新喜
财会月刊 , 2009,
Abstract: 本文基于现有财务会计系统建立了人力资本价值计量模式,该模式下先确定价值分配比例,然后根据价值分配比例确定企业人力资本的价值。【关键词】人力资本物力资本比例系数一、人力资本概述  1.人力资本的内涵。作为现在与未来产出流和收入流的源泉,资本是一个具有价值的存量。人力资本是体现在人身上的技能和生产知识的存量,是通过有意识投资获得的依附于人身上的知识、技能、健康、道德、信誉、社会关系等的总和。由此可见,作为一种新兴资本,人力资本具有与传统的物力资本截然不同的内涵。另外需要说明的是,我们这里讨论的是作为企业生产经营活动参与者的人力资本,而不是讨论广义的人力资本。
不同温度下有机玻璃厚板的平面应变断裂韧性试验
Plain-strain fracture toughness tests of thick acrylic sheets at different temperatures

综轶,元清,新喜,??,张天雄
- , 2018, DOI: 10.3969/j.issn.1001-0505.2018.05.013
Abstract: 为研究有机玻璃平面应变断裂韧性(KIC)与温度的关系, 设计了母材和带拼接缝试件, 在-40~40 ℃范围内进行三点弯试验.采用疲劳试验机预制疲劳裂纹, 利用酒精和液氮对试件降温,用纯水进行升温,观察试件宏观断口形貌, 结合有限元和断裂力学进行算例分析. 结果表明:在低温下, 试件达到极限荷载后迅速断裂, 失稳扩展的裂纹临界长度较小, 裂纹扩展速率快; 高温下, 临界长度较大, 裂纹扩展速率慢. 母材试件在20 ℃时KIC最小,-20 ℃时最大,而带拼接缝试件在40 ℃时KIC最小,-40 ℃时最大. 断面上沿裂纹扩展方向的弧状条纹数增多会导致KIC降低, 当出现垂直于疲劳裂纹边缘线的放射状条纹时,KIC进一步降低. 对于所提算例, 裂纹尖端各点的应力强度因子随裂纹深度的增加而增加.
To study the relationship between the plain-strain fracture toughness(KIC)of acrylic and the temperature, the base-material specimens and the specimens with joint area were designed. The three-point bending tests were conducted at the temperature of -40 to 40 ℃. The fatigue cracks were prefabricated by a fatigue test machine. The temperature of the specimens was reduced by alcohol and liquid nitrogen, while it was increased by purified water. The macroscopic fracture morphologies of the specimens were observed. Cases were studied based on finite element and fracture mechanics theories. The results show that the specimens rupture rapidly after the ultimate loads at low temperature. The critical crack lengths of unstable propagation are relatively small and the propagation speeds are fast. At high temperature, the critical crack lengths are large and the propagation speeds are low. As for base material, KIC is the lowest at 20 ℃ and the highest at -20 ℃. As for the joint area, KIC is the lowest at 40 ℃ and the highest at -40 ℃. The increase of the number of the arc-shaped marks along the crack propagation direction leads to the decrease of KIC. When the radial-pattern marks vertical to the edge of fatigue crack appear, KIC decreases further. For the proposed cases, the stress intensity factors of the various points at the crack front increase with the increase of the crack depth
?中微子探测器中不锈钢紧固件的承载性能试验
综轶,元清,新喜,衡月昆,陈志华,秦中华
天津大学学报(自然科学与工程技术版) , 2015, DOI: 10.11784/tdxbz201505018
Abstract: ?江门中微子探测器有机玻璃球+双层不锈钢网壳方案中采用了附加有机玻璃和不锈钢的紧固件来连接主体有机玻璃和不锈钢撑杆.为了设计出能运用于该方案中的不锈钢紧固件,并且研究其极限承载力、破坏模式以及在设计荷载作用下各部件的应力水平,本文设计了3个相同的不锈钢紧固件的试件,进行了轴拉重复性试验,然后通过abaqus软件完成了有限元分析.结果表明,试件1、2、3的极限承载力分别为2,400,kn、2,500,kn和2,100,kn,至少具有14倍的安全储备,破坏的模式均为球头套帽和球头套脱开;在140,kn设计荷载作用下,各部件的应力值远小于屈服强度.因此,本文设计的不锈钢紧固件安全可靠,完全满足江门中微子探测器的要求.
不同温度下有机玻璃厚板的准静态拉伸试验研究
Quasi-static tensile test of thick acrylic sheets at different temperatures

综轶,元清,新喜,张天雄,袁焕鑫
- , 2018, DOI: 10.3969/j.issn.1001-0505.2018.01.020
Abstract: 为研究温度对有机玻璃厚板准静态拉伸力学性能的影响,得到有机玻璃的本构关系,设计了母材试件和带拼接缝试件,分别进行单轴拉伸试验,试验温度为-40~40 ℃.对比试件的真实和名义应力应变曲线,采用ZWT模型的非线性弹性部分表达式对试验结果进行拟合,并且对试件断口进行电镜扫面分析.试验结果表明,有机玻璃厚板的应力应变曲线表现出非线性,无屈服点,试件为脆性破坏.随着温度的升高,试件的极限强度和初始弹性模量均减小.带拼接缝试件的强度为母材试件强度的77.2%~89.6%.设计的有机玻璃试件强度较高,初始弹性模量偏小.拟合得到的本构方程能较好地描述有机玻璃厚板的本构关系.当温度高于0 ℃时,断口表面的河流花样变得明显.
In order to study the effects of the temperature on the quasi-static tensile mechanical behavior of thick acrylic sheets and achieve the constitutive relationship of acrylic, the base-material specimens and the specimens with joint areas are designed and tested under uniaxial tension. The temperature varies from -40 to 40 ℃. The true stress-strain curves and the nominal ones are compared. The test results are fitted by using the nonlinear elastic expression of the ZWT model. The scanning electron microscope analysis is conducted for the fracture surfaces of the specimens. The test results show that the stress-strain curves of the thick acrylic sheets are nonlinear. There is no yield point and the failures of the specimens are brittle. The ultimate strengths and the initial elastic moduli of the specimens decrease with the increase of the temperature. The strengths of the specimens with joint areas are 77.2% to 89.6% of those of the base-material specimens. The strengths of the designed specimens are high, while the initial elastic moduli are low. The constitutive equations obtained by fitting can describe the constitutive relationship of the thick acrylic sheets. When the temperature is higher than 0 ℃, the river patterns of the fracture surfaces become remarkable
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