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唐山市古冶区工业废弃地活化与再生策略研究 总被引:2,自引:1,他引:1
在综合分析现状的基础上,提出了唐山市古冶区工业废弃地活化与再生的原理、目标及实施策略。 相似文献
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为规范强化大曲的生产,适应西凤酒扩能及数字化生产需求,通过对强化霉菌的优筛、复壮及性能测试,获得优良的强化菌种,继而优化强化菌种的配比方案,使大曲性能更优。结果表明:(1)通过糖化力培养基筛选及菌株酶活测定,共筛选出6株强化霉菌,分别是黑曲霉M004-2、黑曲霉C556-22、酯化红曲霉-16、红曲霉C462-11、根霉S和根霉5,对其进行重新保藏;(2)对筛选出的菌株进行不同比例混合固态发酵试验,通过不同理化指标进行比较分析,得出红曲霉:黑曲霉:根霉=3:1:2的配比组合为最优组合。 相似文献
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南京金城厂始建于1949年,目前成为南京老城内尚存的为数不多的零星工业用地,金城厂整体更新的案例是将地块个案纳入到城市整体的城市功能结构、公共配套、景观空间、交通组织、历史文化特色的保护、传统城市空间的延续等角度来思考其整体更新改造,方案旨在为老城内具有一定历史保护价值的工业地段改造探索一种新思路。 相似文献
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A comparative study has been made on the efficiency of oxalic, malonic and acetic acids for selective removal of metal foulants (e.g. vanadium) from spent residue hydrotreating catalysts in the presence and absence of aluminium nitrate. The influence of concentration of the added salt (aluminium nitrate) on the leaching efficiency of the three acids was also studied. The treated catalysts were characterized and the improvements in surface area, pore volume and HDS activity as a result of leaching with each reagent compared. The studies revealed that addition of aluminium nitrate enhanced the leaching efficiency of each acid to a different degree. The rate of vanadium leaching by oxalic acid was increased substantially by aluminium nitrate addition whereas for acetic acid there was only a moderate enhancement in leaching rate. The enhanced leaching by the aluminium nitrate-organic acid system may be explained in terms of a synergistic mechanism involving oxidizing and complexing reactions. The improvement in surface area and pore volume achieved on rejuvenation were related to the extent of removal of vanadium from the catalyst. The HDS activity of the catalyst was also increased significantly by leaching of the deposited metals. The selectivity for vanadium leaching (V/Mo ratio) was found to be an important factor for HDS activity recovery. 相似文献
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Sayyed Shahabeddin Hosseini Said NateghAli-Akbar Ekrami 《Journal of Alloys and Compounds》2012,512(1):340-350
IN738LC is one of the superior nickel base superalloys utilized at high temperatures in aggressive environments. However, experiencing high temperatures and stresses during service causes microstructure deterioration and degradation of mechanical properties in this alloy. To restore the microstructure and mechanical properties of the degraded alloy, rejuvenation heat treatments can be considered. In this study, the evolution of microstructural features in a creep damaged IN738LC superalloy during different stages of rejuvenation heat treatment cycles was investigated. During solution treatment stage, dissolution of coarsened γ′ precipitates, grain boundary films and transition zone around primary MC carbides took place. Solution treatment at high temperature led to lower volume fraction and smaller size of remnant γ′ precipitates and further dissolution of grain boundary films and caused MC carbides to be remained without the surrounding transition zone. In addition, fine γ′ precipitates formed during the subsequent cooling, namely cooling precipitates, were detected in higher contents after solutionizing at higher temperatures. It was found that slower cooling rates after solution treatment gave rise to coarser γ′ precipitates with higher volume fraction. Among all heat treatment cycles investigated, double solution treatment at 1190 °C/4 h/FC (furnace cooling) + 1120 °C/2 h/AC (air cooling) followed by aging at 845 °C/24 h/AC was successful to revert the microstructure back to its virgin state. 相似文献
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基于访问关系的进程重启相关性判定 总被引:4,自引:1,他引:4
执行细粒度的进程级软件抗衰,可以进一步降低抗衰成本,提高软件可靠性。本文根据软件系统中进程间控制、调用及数据访问的关系,分析了进程间的耦合度,确定了寻找直接耦合进程的途径,并在此基础上判定了进程重启相关性,从而为实现系统进程级软件抗衰提供了支持。 相似文献
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永定门外桃园位于北京市岽文区永外大街东侧辅路路南,占地约1.9hm^2,成为以永定门为中心,延续中轴路文化氛围,突出绿色崇文特色的城市绿肺。作为老街巷、老建筑拆迁后形成的一片公共绿地,对城市脉络的延续和对现有资源的利用成为设计中的焦点,记录了设计过程中的一些心得和感想,并从普通居民的角度对旧城改造和本土地域化设计进行了探索和思考。 相似文献
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