Results 31 to 40 of about 86,621 (160)
Enhanced Magnetocaloric Effect in Tb‐Co‐Ni Magnets via Chemical Pressure
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Magnetic refrigeration materials are significantly needed in versatile modern industries, including scientific research, aerospace, and health care, due to their potential applications in gas liquefaction and storage. Herein, a significantly enhanced magnetocaloric effect with a suitable operation temperature range of 53–114 K and a giant ...
Lei Xi +11 more
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Gongye shui chuli, 2021 目前，国内已建高含硫气田均采用“正压气提+密闭氧化除硫”工艺去除气田采出水中的硫化物。该工艺应用过程中由于正压气提对气田采出水中硫化物的去除率低，从而造成吨水处理成本高。为降低处理成本，开展了负压气提工艺现场中试研究，确定了进水pH、气水比、塔内工作压力等最佳工艺参数，出水硫化物去除率达到99%。对YB29污水站进行负压气提工艺改造，整体运行数据与中试试验基本吻合，吨水处理费用降低至56元。
王伟, 朱国, 杨光
doaj +2 more sources
Zhongguo shiyan zhenduanxue, 2017 内源性呼气末正压（PEEPi）是指由于呼气气流受限或有效呼气时间不足导致呼气末时肺容积未能回到正常功能残气状态,呼气末时肺泡内压力大于大气压,所产生的正压称为PEEPi[1-6]。目前有相关研究表明 ...
朱冬雪, 杨俏, 金立民, 宋雪松
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Gaoya dianqi, 2023 高压自能式SF6断路器单向阀、回气阀和泄压阀的运动特性对灭弧室气流场计算结果的准确性具有重要影响。基于3个阀片实际的运动规律，运用牛顿第二定律，建立阀片运动的数学模型，并结合真实气体物性参数，对自能式SF6断路器灭弧室冷态气流场进行仿真，准确获得了3个阀片的运动特性，同时分析了3个阀片的受力特性及阀片周围的压力分布。研究表明，空载情况下，单向阀将对拉杆产生相对运动，这是引起单向阀由闭合到开启状态变化的主要原因，而回气阀移动的主要原因是压气室压力的建立 ...
赵伟涛 +4 more
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Æ E Æ Å – Reshaping the Role of Træna Fishermen
, 2022 This diploma project aims to strengthen the viability of Træna’s community by proposing an ocean research facility in the archipelago, enabling the next generation of local fishermen to collect oceanographic data while working at sea. The idea of the fisherman as oceanographer is inextricably linked to the architectural program on the island of ...
openaire +1 more source
Wafer‐Scale Amorphous g‐C3N4 With Broadly Tunable Dielectric Properties for 2D Electronics
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Two‐dimensional (2D) semiconductors are regarded as promising candidates for next‐generation electronics due to their superior electrostatic control; however, their performance is severely constrained by the lack of suitable dielectric materials.
Binyin Gao +13 more
wiley +1 more source
Gaoya dianqi, 2016 采用混合气体是解决气体开关设备低温运行的有效途径之一。文中基于真实气体模型,建立SRK状态方程的迭代形式,给出了SF6与CF4气体压力值在0.11 MPa,温度在223323 K范围内压缩因子曲线,分析了温度与压力对压缩因子的影响,给出了不同压力与温度下,SF6与CF4真实气体与理想气体压缩因子的偏离情况,确定混合气体的压缩因子的混合规则,分析了温度与压力对压缩因子的影响,确定混合气体的混合规则,获得了SF6、CF4及混合气体饱和蒸汽压与等密度曲线,得到了混合气体在不同使用条件下的充气与补气方案 ...
钟建英 +4 more
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Conservation Biology, Volume 40, Issue 3, June 2026.Abstract Human development is a driver of global change and a major threat to biodiversity. Protected areas maintain and support biodiversity, but outside stressors, such as climate change and land use change, can negatively influence natural resources within protected areas.
Leah J. Rudge +2 more
wiley +1 more source
, 1999 利用双流体连续介质模型建立了高速掺气水流基本方程，通过量级分析等方法研究了高速掺气水流的压缩性准则。在定常均质掺气水流中，绝热Mach数M决定着压缩性效应的强弱: M< 0.3时流动可视为不可压的 ...
李炜, 赵建福
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Gaoya dianqi, 2005 对纳秒脉冲（10/30ns）下真空绝缘闪络电压随气压的变化趋势进行了实验研究,探讨的气压范围介于8×10-4Pa至标准大气压之间。研究发现,当气压位于高真空区域（10-4～10-1Pa）时,随着气压的改变,绝缘闪络电压无明显变化,基本保持恒定。深入剖析真空环境下的气体解吸附过程,得出如下结论:当气压进入高真空阶段时,表面放气已成为主要气体负荷,所释放气体均源于绝缘体表面的解吸附气体。真空闪络现象,事实上是一种在绝缘体表面气体解吸附后所形成一高气密环境中发生的放电过程。
高巍, 孙广生, 严萍
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