设计指纹签到系统的思考

介绍了实现指纹签到系统中高级语言Visual Basic对底层二进制数据的读取方法，数据的存放方式。详细讲述了用Visual Basic编程的关键技术和方法。同时给出了指纹签到系统的使用效果和应用前景。     

永通公司高比例褐铁矿烧结的生产试验

为了应对资源危机,降低烧结矿成本,永通公司就高比例配用廉价褐铁矿粉烧结进行了生产试验,并对高褐铁矿配比条件下适宜的操作参数和强化烧结的措施进行了探索。在保证烧结矿产量和质量的前提下,实现了烧结矿成本的降低。     

用正电子湮没研究含砷α黄铜的脱锌机制

分别测量了含０．００、０．０１、０．０３、０．０５、００７、０．１０ｗｔ％Ａｓ的６８ｗｔ％Ｃｕ－Ｚｎ合金在１％ＣｕＣｌ２水溶液中脱锌后的正电子寿命谱。讨论了黄铜脱锌及砷抑制脱锌的空位体扩散机制。     

Preliminary thermal-hydraulic and safety analysis of China DFLL-TBM system

China has proposed the dual-functional lithium-lead (DFLL) tritium breeding blanket concept for testing in ITER as a test blanket module (TBM), to demonstrate the technologies of tritium self-sufficiency, high-grade heat extraction and efficient electricity production which are needed for DEMO and fusion power plant. Safety assessment of the TBM and its auxiliary system should be conducted to deal with ITER safety issues directly caused by the TBM system failure during the design process. In this work, three potential initial events (PIEs) – in-vessel loss of helium (He) coolant and ex-vessel loss of He coolant and loss of flow without scram (LOFWS) – were analyzed for the TBM system with a modified version of the RELAP5/MOD3 code containing liquid lithium-lead eutectic (LiPb). The code also comprised an empirical expression for MHD pressure drop relevant to three-dimensional (3D) effect, the Lubarsky–Kaufman convective heat transfer correlation for LiPb flow and the Gnielinski convective heat transfer correlation for He flow. Since both LiPb and He serve as TBM coolants, the LiPb and He ancillary cooling systems were modeled to investigate the thermal-hydraulic characteristic of the TBM system and its influence on ITER safety under those accident conditions. The TBM components and the coolants flow within the TBM were simulated with one-dimensional heat structures and their associated hydrodynamic components. ITER enclosures including vacuum vessel (VV), port cell and TCWS vault were also covered in the model for accident analyses. Through this best estimate approach, the calculation indicated that the current design of DFLL-TBM and its auxiliary system meets the thermal-hydraulic and safety requirements from ITER.     

放射性污染石墨焚烧处理的可行性研究

本文介绍了放射性污染石墨固定床式焚烧处理的可行性试验研究及石墨液压破碎机研制结果。小试验和扩大试验结果表明 ,采用固定床式焚烧石墨 ,并将燃气引入燃烧炉中二次燃烧这一方案是可行的 ,空气流速在 0 .0 65～ 0 .0 7m/s范围内 ,石墨炉的处理强度为 30 kg/m2 · h左右 ,烟气中 CO浓度小于0 .1% ,残渣量小于 1% ,且二次燃烧不需要或只需少量辅助燃料助燃。所研制的液压破碎机 ,性能良好 ,产生的细粉量少 ,可以满足石墨焚烧前处理的需求。     

锤式破碎机圆盘45钢与35CrMo铸钢的焊接技术

对进口锤式破碎机圆盘采用厂国产材料－－盘芯３５ＣｒＭｏ铸钢、盘片４５钢替代进行焊接加工,在焊接性分析的基础上,采取焊前预热、低氢焊接和焊后热处理等措施,成功地实现了钎式破碎机圆盘４５钢盘片与３５ＣｒＭｏ合金铸钢盘芯之间的焊接,圆盘已运行１年多,使用效果良好。     

痛挽往昔 瞻望来者——巴米扬窟龛考

本文整理出巴米扬山谷遗址群的年代学证据,旨在重现大佛的历史与图像地位。首先介绍了巴米扬山谷遗址群的研究方法和年代阶段,接着讨论玄奘所见所录的大佛的原始配置,最后将三尊佛像放入其原始的图像志语境中去考查,认为涅檗像原应位于38米大佛和55米大佛之间。后者为宝装焰肩佛,其神格应为燃灯佛;38米大佛为释迦佛。而巡礼者所遵循的应是燃灯佛-释迦佛-涅粲佛-弥勒佛的绕拜顺序。     

微合金元素对700MPa级低碳贝氏体钢组织与性能的影响

通过对700 MPa级低碳贝氏体钢静态CCT曲线及不同冷却速度下组织的分析,研究了两组不同Ti、Nb含量的低碳贝氏体钢的组织、性能。结果表明,Ti、Nb含量的增加促使抗拉强度、屈服强度提高,但是Ti含量过量时对低温冲击功是不利的;wTi=0.015%-0.025%、wNb=0.04%-0.05%可满足700 MPa级别低碳贝氏体钢的强度与韧性要求,该成分钢在TMCP处理后采用回火工艺,可以获得理想的力学性能。     

施工管理科学化的论述

施工管理中的施工技术管理、质量管理以及生产要素管理是施工管理的主要方面,处理好三者之间的关系以及解决好三个方面中的任何一方面是在施工中面临的重要问题