检索结果-南通市图书馆

特种铸造及有色合金 2003年第2期23卷 26-28页

作者：徐春杰甘雨张云鹏张雷西安理工大学铁道部戚墅堰机车车辆研究所

建立了铸铁水平连铸用结晶器水冷套的传热模型 ,并用有限差分法模拟计算了不同高宽比水道结构的水冷套系统传热过程。水道高宽比K值对水冷套冷却能力的影响规律是 :K值增加 ,水道内水流速、等效传热面积均减小 ,水套的冷却能力降低。

关键词：圆结晶器水道高宽比设计原则

在线全文

学校读者我要写书评

暂无评论

自旋锚杆安装扭矩与锚固力关系研究

施工技术 2009年第S1期38卷 15-17页

作者：许刚惠兴田西安科技大学陕西西安710054

依据原地旋转模型和圆筒形模型,研究了自旋锚杆安装扭矩与锚固力的关系,指出两者均随锚叶直径的增大而增加。结合西安地铁2号线张家堡标段基坑工程,对自旋锚杆进行试验,试验结果表明:在不改变自旋锚杆自身参数情况下,安装扭矩与锚固长... 详细信息

依据原地旋转模型和圆筒形模型,研究了自旋锚杆安装扭矩与锚固力的关系,指出两者均随锚叶直径的增大而增加。结合西安地铁2号线张家堡标段基坑工程,对自旋锚杆进行试验,试验结果表明:在不改变自旋锚杆自身参数情况下,安装扭矩与锚固长度呈线性关系,锚固力与锚固长度呈抛物线关系;当锚固长度一定时,锚固力和安装扭矩基本上呈线性关系。指出可以在工程应用中直接通过安装扭矩反映锚固力大小。

关键词：自旋锚杆安装扭矩锚固力关系

在线全文

学校读者我要写书评

暂无评论

论构建目标公司反收购制度的理论基础

学习与探索 2002年第2期 71-74页

作者：梁静溪哈尔滨理工大学经济管理学院黑龙江哈尔滨150080

如何构建目标公司反收购制度 ,其理论基础在于如何定位敌意收购与公司治理关系。美德两国在构建目标公司反收购制度时所采纳的两类截然不同的理论基础。借鉴英美模式。

关键词：目标公司反收购敌意收购公司治理

Simulation Analysis and Virtual Manufacture of Large Plastic

在线全文

学校读者我要写书评

暂无评论

Simulation Analysis and Virtual Manufacture of Large Plastic

Asian Simulation Conference/The 6th International conference on system Simulation and Scientific Computing

作者： WANG Yixuan,LIAN Liping,WANG Ying (xi'an university of Engineering science and technology, xi'an 710048,China Shaanxi Huanghe Tool Co., xi'an, 710043, China xi'an Jiaotong university, xi'an 7 10049,China )

The main design parameters of injection mould of large plastic are determined by injection process and machine. During the process of design, it is difficult to decide the type of runner system, the cross-section shape of runner, injection location and sprue position, and the pressure, temperature .velocity and time effects of molding processes. In this paper, take the inner pail part of washing machine as an example, the ideal combination of geometry .material, advanced mold design and process conditions that will affect product quality are analyzed and determined by Moldflow Plastics Insight (MPI) software .These results have been applied to the production of inner pail part of washing machine .The repair time and discard rate of mould have been decreased, design level of mold and quality of injection plastic have got greatly improved. Design time and production expense have also decreased.

关键词： large plastic molding process simulation analysis virtual manufacture

在线全文

cnki会议

学校读者我要写书评

暂无评论

调整判断矩阵不一致性的一种新方法

陕西师范大学学报（自然科学版） 2008年第S1期36卷 5-7页

作者：肖海燕西安科技大学基础课部陕西西安710054

利用一致性判断矩阵的特点和矩阵的初等变换思想,对于不满足一致性的判断矩阵,给出了一种一致性调整的新方法,并给出了具体的数值例子。

关键词：层次分析法判断矩阵一致性调整

在线全文

学校读者我要写书评

暂无评论

对新时期高校体育课改革的分析与研究

陕西师范大学学报（自然科学版） 2008年第S1期36卷 205-207页

作者：谢志斌西安科技大学体育部陕西西安710054

对当前我国高校体育教学现状及存在的主要问题进行了分析,提出了相应的高校体育教学改革的方向及改革措施,以期为高校体育更好地贯彻新课标的要求,使高校体育教学真正为实现"健康第一"的主导思想提供一定的理论参考和建议。

关键词：高校体育教学分析研究

在线全文

学校读者我要写书评

暂无评论

关于建模与仿真过程的标准化问题

陕西师范大学学报(自然科学版) 2001年第S1期 37-39页

作者：刘骏跃西安科技学院自动化系陕西西安710054

介绍了建模和仿真概念 ,仿真研究的现状和存在的问题 .分析了解决建模标准化和仿真模型的可重用性问题的基本原则 ,针对面向对象的设计和分析方法 ,讨论了其建模与仿真标准化的技术途径

关键词：建模仿真标准化可重用性面向对象

Intelligent monitoring system for DC circuit of mechanical and electrical equipment

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Intelligent monitoring system for DC circuit of mechanical a...

2007'仪表，自动化及先进集成技术大会

作者： Hao Yingji Wang Ronggang Sun Yurong(1 Institute of Mechanic Engineer and Testing technology xi'an university of science and technology,xi'an 710054,China 2 Electrostatic Research Institute Hebei university,Baoding 071002,China)

In this paper,an original monitoring system based on high performance MCU of ATmega48 are presented. The principle of the system and the overburden automatic protecting circuit are *** hardware of this sys- tem consists logic self-locking circuit,*** data acquisition,communication modules,*** system a- chieves function of real-time monitoring the current of multiplex DC circuit and the display & control in human comput- er interaction by Lab Windows/CVI and its friendly interface makes manipulation *** failure presents the sys- tem can break the connection between power and equipment to protect the equipment.

关键词： intelligent monitoring mechanical and electrical equipment DC circuit overburden automatic protecting circuit MCU of ATmega48.

Assembly of different solid particles on the surface of PS microspheres

在线全文

cnki会议

学校读者我要写书评

暂无评论

Assembly of different solid particles on the surface of PS m...

2007年全国高分子学术论文报告会

作者： Kegong Ning Yongjun He Kanshe Li Huiwu Cai xiaoxue Yang Institute of Macromolecules,xi''an university of science and technology,xi''an710054

＜正＞Calcium carbonate,cuprum carbonate,silica and their compoundingparticles-armored PS microspheres were synthesized in a Pickering emulsion *** productswere characterized by SEM,results showed that the solid artic... 详细信息

关键词： Solid particles Interface Interaction

The analysis of structure and constitutes of oxidized Shenfu coal by photo-biological co-conversion method

在线全文

cnki会议

学校读者我要写书评

暂无评论

The analysis of structure and constitutes of oxidized Shenfu...

The 5th Joint China/Japan Chemical Engineering Symposium

作者： Zhou Anning Meng Qingyu Zeng mei Wang Guangheng College of Chemistry and Chemical Engineering xi’an university of science and technology xi’an 710054 China

＜正＞Shenfu coal（SFC） and 6h UV-oxidized Shenfu coal（6h-UV-OSFC） were converted by penicillium citreo-viride（PCV） in dynamic salts ***,6h-UV-OSFC and their bioconversion residual coal（PCV-SFC,6h-UV/PCV-OSFC） were extracted with acetone,then the residues were extracted by *** results show that acetone extraction yield of the bioconversion residues reduced significantly due to photo-oxidized *** extraction yield of SFC, 6h-UV-OSFC,PCV-SFC and 6h-UV/PCV-OSFC were 2.35%,8.74%,5.85%and 14.27%, *** total extraction yield of PCV-SFC and 6h-UV/PCV-OSFC were 20.81%and 20.92%,but the total extraction yield of SFC was only 2.92%.Therefore,the THF extraction yield of Shenfu coal was improved by photo - bio coupled conversion.

关键词：