洪水水文预报系统

水文预报系统是计算机算法应用于水文预报的一次实践 ,在从产汇流原理出发 ,详细阐述系统结构 ,工作原理及系统特征 ,还对软件的应用及今后开发前景进行了展望 ,随着社会发展和科技进步 ,实施计算机预报系统便于提高预报精度 ,增强水文预报的时效性 ,将使水文预报作用日益显著。     

安徽省政府网站建设现状与优化思路

政府网站是社会文化和社会发展要与经济高速发展相适应的要求。通过对安徽省部分政府网站建设的调查,分析了安徽省政府网站建设的基本现状与存在的问题,提出了优化网站建设水平的政策建议。     

托夹矸回采下分层综采工艺的试验研究

煤炭开采中煤层分叉现象比较常见,煤层分叉处的开采由于地质条件复杂,特别是顶板脆弱难以控制,多采用炮采开采工艺方法,本文针对戊9戊10煤层分叉特点,试验了托戊9戊10煤夹矸回采戊10煤的综采工艺回采方案,并制定了相应的技术及管理措施。     

二氧化锆梯度复合羟基磷灰石生物材料的制备及其生物相容性

采用干铺2烧结法制备了一种以二氧化锆(ZrO₂ ) 为基体梯度复合羟基磷灰石( HAP) 的新型生物复合材料, 并对其力学性能、微观结构和生物相容性进行了研究。用扫描电镜(SEM) 、X 射线衍射仪(XRD) 、透射电镜( TEM) 和EDAX 能谱仪对粉体和复合材料进行分析。用复合材料的浸提液进行小鼠急性毒性试验、细胞毒性试验、体外溶血试验以及兔肌肉和骨内材料植入试验, 评价复合材料的生物相容性。研究结果表明, 复合材料的表面涂层厚度约80μm , 芯部基体组织与表面均匀过渡结合, 结合良好, 没有明显界面, 涂层结合强度为15. 1 MPa ,最大弯曲强度为1112. 24 MPa , KIC为7. 3～11. 4 MPa·m1/2 。其组织相容性好, 具有良好的骨传导作用, 促进骨组织生长, 是一种较理想的新型骨科植入材料。      

Experimental Investigation of Wire Arrangements for Narrow-Gap Triple-Wire Gas Indirect Arc Welding

A new narrow-gap welding process is proposed by applying triple-wire gas indirect arc (TW-GIA). There are double power supplies and triple wires in this system. Power supplies are only connected between electrode wires and base materials are not linked to power supplies. Since there are different wire arrangements with TW-GIA, this article studies these wire arrangements and their effects on sidewall fusion for narrow-gap welding. Results show that different wire arrangements lead to variant arc behaviors and metal transfer, and consequently they lead to different situation of sidewall fusion. The heat to melt sidewalls is mainly from the indirect arc column and metal transfer with narrow-gap TW-GIA. When side wires deviate from the main wire to opposite directions, heat from arc columns and metal transfer can concentrate toward groove sidewalls. When the whole weld torch is lowered, heat from the indirect arc column and metal transfer increases at the weld bead root.     

Coupling evaluation for material removal and thermal control on precision milling machine tools

Machine tools are one of the most representative machining systems in manufacturing. The energy consumption of machine tools has been a research hotspot and frontier for green low-carbon manufacturing. However, previous research merely regarded the material removal (MR) energy as useful energy consumption and ignored the useful energy consumed by thermal control (TC) for maintaining internal thermal stability and machining accuracy. In pursuit of energy-efficient, high-precision machining, more attention should be paid to the energy consumption of TC and the coupling relationship between MR and TC. Hence, the cutting energy efficiency model considering the coupling relationship is established based on the law of conservation of energy. An index of energy consumption ratio of TC is proposed to characterize its effect on total energy usage. Furthermore, the heat characteristics are analyzed, which can be adopted to represent machining accuracy. Experimental study indicates that TC is the main energy-consuming process of the precision milling machine tool, which overwhelms the energy consumption of MR. The forced cooling mode of TC results in a 7% reduction in cutting energy efficiency. Regression analysis shows that heat dissipation positively contributes 54.1% to machining accuracy, whereas heat generation negatively contributes 45.9%. This paper reveals the coupling effect of MR and TC on energy efficiency and machining accuracy. It can provide a foundation for energy-efficient, high-precision machining of machine tools.     

在役热壁加氢反应器堆焊层剥离的超声波检测

通过对加氢反应器内壁放置试块的解剖试验，我们做地堆焊层剥离边界测定试验，并对检测面的选择探伤标准的应用作了分析，提出了合理的检测工艺方法。     

土壤热源热泵地下换热性能分析

以土壤热源热泵为研究对象，采用探针法对4种情况下的土壤的导热性能进行实验研究，结果表明，总体上讲土壤的导热系数砂与含水量增加而增大，在4种配比情况下，当含水量相同时，土与砂比率为1：2时土壤导热系数达到最大，但土与砂比率为2：1时与其相差不多，则土与砂比率采用2：1时可认为更经济。     

关于油气储量翻译的建议

随着我国油气工业的国际交往日益增加，以及海外油气勘探开发作业的范围和领域不断扩大，专业翻译作为国际交往的工具，其重要性是不言而喻的。过去由于我国的储量分类标准与西方国家的储量分类标准有较大的差异，因而在各类储量的翻译上常常会造成很大的误解，影响了国际交往的顺利进行。我国新颁布的储量分类标准（GB/T 19492-2004）对原来的分类标准进行了修改，并增加了与国际接轨的储量分类的内容。这无疑有利于石油工业的国际交往。鉴于目前我国的储量分类标准尚未完全与国际接轨，根据我国各类储量的定义和西方国家的定义，将大体相同的类别对应起来，而对我国特有的类别，也提出了我们的翻译建议。目的是使这些术语能尽量反映所对应类别的内涵，而不至与其他类别混淆，引起误解。     

中板轧机液压压下计算机厚度控制系统

本文介绍了马钢中板厂四辊中板轧机液压压下计算机厚度控制系统的结构、功能原理及特点.