Results 21 to 30 of about 134,894 (128)
Resource Substitution: Local Governments' Issue Attention and Policy Reinvention
Policy Studies Journal, Volume 54, Issue 4, November 2026.ABSTRACT Research on policy reinvention, where a government modifies rather than replicates policy innovations introduced by other governments, has progressed significantly, but how it is influenced by the government's issue attention has not been thoroughly examined.
Yingxin Zhang, Yixue Yao, Kaifeng Yang
wiley +1 more source
, 2016 本发明公开一种采用导热标定热流计的方法，包括：将热流计与一导热性好的高温物体紧密贴合，并将高温物体除与所述热流计接触面外的其余各面保持绝热；测量热流计的输出电压E、内部温度Tsb与高温物体的温度T，计算热流计的标定系数α。本发明的导热标定方法不要求稳态的导热过程，可以进行短时间 ...
李龙, 王新竹, 李英, 范学军
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, 2012 天然气水合物作为一种新型替代能源，如何有效开发成为当前研究的热点，热激发被认为是除降压法外天然气水合物开采的另一重要途径。目前对于天然气水合物注热开采效率和经济可行性仍没有清楚的认识。构建了通过垂直单井对天然气水合物进行注热开采的物理模型，通过对物理模型的理想简化，在水合物藏中划分出一个理想薄层，对研究的储层体系进行了密集的网格划分，并以南海北部陆坡神狐海域天然气水合物成藏特征为依据，利用TOuGH＋HYDRATE程序，数值模拟研究了对天然气水合物藏进行热激发开采的潜力 ...
苏正, 何勇, 吴能友
core +5 more sources
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Systematic studies on the fatigue deformation and damage mechanisms of nickel‐based single‐crystal superalloys (Ni‐SXs) under combined thermal and mechanical conditions remain limited, particularly regarding the influence of strain amplitude on the relative contributions of fatigue and oxidation damage.
Liyin Zhang +7 more
wiley +1 more source
Boosting Decomposition and Combustion of TKX‐50 and HTPB/TKX‐50 Propellants With NH2‐MIL‐88B(Fe) MOF
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Dihydroxylammonium 5,5′‐bistetrazole‐1,1′‐diolate (TKX‐50) is a promising energetic material that possesses both exceptional energy density and low sensitivity. Nevertheless, its application is hindered by incomplete pyrolysis during combustion or explosion. Various strategies, including eutectic formation, composite preparation, and catalysis,
Jingwen Chen +10 more
wiley +1 more source
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT To meet the demand for high‐performance lightweight heat‐resistant materials in aerospace and automotive applications, a novel Al‐Fe‐Sc‐Zr heat‐resistant aluminum alloy was fabricated by laser powder bed fusion (L‐PBF). The effects of Mg content (1 wt%, 3 wt%, 5 wt%, and 7 wt%) on formability, microstructure, mechanical properties, and thermal
Xinyu Du +6 more
wiley +1 more source
Shiyou jixie, 2012 稠油热采新工艺应用中前期先导试验时采用光油管注汽，出现注汽热效率低、部分井套管和固井水泥环被破坏等问题。为此，研制了Y341-115热采封隔器等配套工具。配套工具与井筒隔热技术相结合，使浅薄层稠油油藏得到了有效动用和开发。此外还根据现场工艺管柱的特点，配套开发了张力油管锚、大流道单流阀等工具，解决了隔热和反洗井等问题，实现了隔热注采合一的功能。Y341-115隔热封隔器配套工艺技术现场共应用500多井次，其工艺成功率达98%以上，累计节约作业井次400多次，累计增加产油量8 312 t。
许冬进 +5 more
doaj
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Laser‐directed energy deposition (L‐DED) offers a flexible route for fabricating γ‐TiAl components, but the as‐deposited microstructure requires post‐processing to overcome limited deformation capability. Here, an L‐DED Ti–48Al–2Cr–2Nb alloy was subjected to solution and solution‐aging treatments.
Mengya Chu +6 more
wiley +1 more source
Gongye shui chuli, 2011 运用水夹点技术, 对循环冷却水系统进行优化。传统的循环冷却水系统采用平行换热网络设计, 换热效率低, 用水量大。采用连续换热网络, 对传统循环冷却水系统进行优化设计后的用水网络, 可取得较高的冷却塔进口水温和较小的用水量, 从而达到节约用水、提高换热效率的目的。
郭勇, 康宏磊, 王荷芳, 李红兵
doaj +2 more sources
Shiyou jixie, 2014 热采水平井蒸汽吞吐时水平段吸汽不均衡，造成水平段动用不均。鉴于此，对热采水平井改善吸汽剖面技术进行研究。首先，建立油藏井筒流动耦合模型及储层热流变形三场耦合模型，定量分析了油层物性参数、非均质性及注汽口位置对吸汽剖面的影响。然后，根据上述分析结果，设计了均衡注汽完井工艺管柱。该管柱可实现注采一体化及均匀注汽以及长水平段、非均质储层的均匀注采。现场应用结果表明，热采水平井改善吸汽剖面技术可以改善热采水平井长水平段的吸汽剖面，实现均衡注汽，提高水平井的动用程度。
岳慧 +4 more
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