Results 31 to 40 of about 134,045 (129)
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Metal nanoclusters provide abundant catalytically active sites and unique electronic structures that are highly beneficial for enhancing photocatalytic performance; however, their practical application is often hindered by poor photostability.
Yiying Qin +6 more
wiley +1 more source
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The demand for advanced aerospace components necessitates near‐α titanium alloys with enhanced high‐temperature performance and compatibility with additive manufacturing (AM). To address this, an in situ alloying strategy was employed to co‐modify a Ti‐6.5Al‐2Zr‐Mo‐V alloy with Si and Y during laser powder bed fusion.
Zishuo Ma +10 more
wiley +1 more source
Shiyou jixie, 2014 为了解决稠油油藏采用注蒸汽开采方式存在的不足，在常规油水井不压井作业技术的基础上，研究开发了热采井不压井作业工艺技术。该技术主要由热采井不压井作业设备、井下封控技术和循环降温配套技术组成，通过封控技术实现井内注汽、循环降温和油层保护功能，减轻循环洗井冷却降温对地层造成的伤害；地面通过热采井不压井作业设备控制隔热管起下，提高施工的安全性。5口井的现场试验结果表明，采用该技术平均缩短注汽焖井转抽时间10 d，减少注汽损失10%，最大限度地保护了油气层。
高广启 +4 more
doaj
Coupled Structural Characteristics Boost Brazing Performance of Ti2AlNb Alloy
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Brazing of Ti2AlNb alloy is a pivotal technique for new generation aero‐engine lightweight structures, yet developing novel filler metal and achieving the extraordinary performance of titanium alloy brazed joints remains challenging. Here, this study designed an innovative filler metal (Ti70‐xZrxCu15Ni15) and developed inspired coupled ...
Yinchen Wang +13 more
wiley +1 more source
Gongye shui chuli, 2010 鹤煤热电厂采用双流弱酸处理工艺处理循环冷却水补充水提高循环水的浓缩倍率,减少循环水的排污量,同时采用分级用水提高水的循环使用。根据工业废水性质采用不同的处理方法,使鹤煤热电厂达到了废水零排放目标。
张敬
doaj +2 more sources
, 2009 稠油热采使得地层中的温度发生变化，从而导致地层中流体性质参数在地层中存在一定分布，其中对于无限大稠油藏和圆形稠油油藏中的两区同心圆分布和三区同心圆分布已经研究的比较成熟。但是对于任意形状稠油区域中的径向分布目前研究还较少，而且用一般解析或半解析方法都较难获得理论解。同时随着稠油热采的深入进行，地层温度大多不再是按径向分布的，而且存在部分高温条带。这时用目前所建立的热采试井模型进行解释会产生较大误差，因此建立了热采井数值试井的新方法。主要解决了以下两方面的问题：(1 ...
刘曰武
core +2 more sources
Microstructure Tailoring of Laser Powder Bed Fused Nb521 Alloy Toward Strength‐Ductility Synergy
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Niobium‐based refractory alloys are promising candidates for high‐temperature aerospace structures, yet their limited ambient‐temperature ductility and poor processability remain major barriers to broader implementation. Here, Nb521 alloy was fabricated by laser powder bed fusion (LPBF), and the effects of processing conditions and subsequent ...
Lele Qin +7 more
wiley +1 more source
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Many metallic components are frequently subjected to coupled environments of friction and vibration, stemming from interfacial contact and relative motion between mating parts or external stimuli. Consequently, it is imperative for these components to exhibit a synergy of high wear resistance and superior damping properties.
Ze Pu +12 more
wiley +1 more source
Journal of Ecology, Volume 114, Issue 8, August 2026.Ectomycorrhizal roots of Pinus armandii release more carboxylates than non‐mycorrhizal root segments, mobilizing Al‐bound inorganic P. Under the lowest available P conditions, they also secrete more phosphatase, promoting the mineralization of Al‐bound organic P.
Jun Zhou +7 more
wiley +1 more source
, 2006 将多孔介质中天然气水合物在热力作用下的分解过程看作一个移动边界问题,在求解等温边界条件下水合物地层中分解区和未分解区(水合物区)温度场的基础上,推导出热力法开采水合物过程中开采热效率(用于水合物分解的热量与输入热量之比)和能量效率(开采所得甲烷气体的总热值与输入能量之比)的解析表达式.在相同水合物地层条件下,对比注入热盐水(采用NaCl溶液)和热水两种开采方法,得出热盐水中盐的浓度(简称盐度)对开采热效率等的影响.计算结果表明,采用热盐水开采热效率一般在40%～70%.在开采温度300～450 K ...
李刚 +4 more
core +5 more sources