Results 21 to 30 of about 134,045 (129)
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Developing electrode materials with high capacity and outstanding activity is essential for energy storage and conversion technologies. However, integrating multiple functions into a single material remains challenging. Herein, we synthesized a novel CoP@NiCo layered double hydroxide (CoP@NiCo‐LDH) nano‐electrode using hydrothermal and ...
Ruiyu Li +9 more
wiley +1 more source
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Traditional electromagnetic shielding materials mainly focus on attenuating electromagnetic interference (EMI), but they still fail to meet the growing demands of modern flexible electronic devices and Internet‐related information technologies.
Zhi Lei +6 more
wiley +1 more source
Haiyang gongcheng zhuangbei yu jishu, 2015 针对温度对水下卧式采油树出油管安全可靠性的影响,通过分析水下卧式采油树出油管的结构及其内外温差大的特点,建立了水下卧式采油树出油管稳态传热的基本简化模型,包括物理模型和数学模型,并利用热平衡原理获得了该传热模型的解析表达式。结果表明:为了减少热应力值对水下卧式采油树出油管结构强度和材料性能的影响,在水下卧式采油树正常生产中,必须考虑出油管的保温设计。
秦蕊, 李清平, 罗晓兰
doaj
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT In MAX‐phase‐derived metal–matrix composites, the M‐site element simultaneously governs carbide chemistry and matrix precipitate stability, yet it has traditionally been selected empirically rather than from a predictive criterion linking M‐site choice to carbide chemistry, matrix alloying, and L12 stability; moreover, the reaction pathway ...
Wei Yang +8 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 9, September 2026.ABSTRACT An ultra‐high as‐deposited tensile strength of 1408 MPa—the highest reported value for laser‐directed energy deposition (L‐DED) fabricated Ti2AlNb alloy—is achieved in this study. The as‐deposited microstructure consists of coarse B2 grains with a high density of fine acicular O phase precipitates within the grains, along with a brittle α2 ...
Ximiao He +7 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
doaj
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT A facile coprecipitation‐pyrolysis strategy was employed to fabricate Cu/Co nanoparticles (NPs) embedded in nitrogen‐doped carbon matrices (Cu/Co@N‐C) through the carbonization of CuCo‐MOF precursors. Moreover, monometallic counterparts of Cu@N‐C and Co@N‐C were also prepared via carbonization of bimetallic CuZn‐MOF and CoZn‐MOF, respectively.
Weinan Yao +7 more
wiley +1 more source
, 2017 恢复是保证增强型地热系统长期稳定的有效措施,本文以美国沙漠峰地热田为例,采用平行多裂隙模型对其进行采热-热恢复过程数值模拟研究。结果表明：热恢复过程初期温升迅速梯度大,后期明显减慢。热恢复的主要影响因素为热恢复温度初场及热恢复时间周期。热储激发程度与流体流量共同决定了热恢复温度初场,二者对热恢复过程的影响效应与热开采过程相一致。换热单元体厚度、流体流量及采热-热恢复周期均与产出温度和热储寿命呈负相关。系统循环流量为100 kg/s、换热单元体厚度为100 m、采热-热恢复周期为5年时,热储寿命达34 ...
苏正, 翟海珍, 凌璐璐, 吴能友
core +4 more sources