Results 11 to 20 of about 17,790 (198)
, 2004 2004年4月1日，韩国高速铁路KTX(Korea Train eXpress)在京釜线(汉城釜山)、湖南线(汉城-木浦)同时开通。这标志着韩国正式跨入高速铁路时代，继日本、法国、德国和两班牙之后，成为建设时速300km高速铁路的第5个国家。这个被称为“陆地交通的革命和自檀君以来最大的国策事业”的工程，于1992年6月破土动工 ...
金哲学
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Effect of Slag with Different Alkalinity on Sulfide in 42CrMoS4 Steel [PDF]
TeshugangIn order to study the influence of different refining processes on sulfides in ring gear steel 42CrMoS4 steel， starting from the morphology and distribution of sulfides in the steel， two different alkalinity slag and calcium content processes were ...
Wang Xuji, Pan Xiquan, Yang Genchao, Huang Zhenhua
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Mixed‐Scale Powder Enables 3D Printing of Tungsten Alloy
Rare Metals, Volume 45, Issue 11, November 2026.ABSTRACT Laser powder bed fusion (LPBF) offers a promising route for manufacturing tungsten alloy components with complex geometries, whereas W–Ni–Fe alloys remain the most widely used tungsten alloys because of their excellent overall performance.
Jingjia Sun +3 more
wiley +1 more source
甘氨酸修饰大孔纤维素微球的制备及其对Cr3+、Fe3+的吸附研究
Gongye shui chuli, 2011 以碳酸钙固体颗粒为致孔剂，采用热熔胶转化再生纤维素法制备了大孔纤维素微球，并用甘氨酸修饰成阳离子吸附剂，以Cr3+、Fe3+为模型组分考察了该新型吸附剂的吸附性能。采用扫描电子显微镜对吸附剂的结构性能进行了表征，并探讨了吸附时间、初始浓度、温度、pH 对吸附性能的影响。结果表明，吸附在270 min 达到平衡，对Cr3+、Fe3+的饱和吸附量分别为52.5、48.9 mg/g，吸附过程可用Freundlich 等温方程拟合。
李江 +4 more
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Rare Metals, Volume 45, Issue 11, November 2026.ABSTRACT As the second most widely used metallic material after steel, research on the corrosion resistance of aluminum (Al) alloys holds great significance. To overcome the inherent limitations of experimental methods in capturing long‐term multifactor corrosion behavior of Al alloys, this review summarizes recent advancements in the multiscale ...
Yue Hou +3 more
wiley +1 more source
Gongye shui chuli, 2022 厌氧氨氧化工艺作为一种经济高效的新型生物脱氮技术，近年来受到了极大的关注。然而厌氧氨氧化菌世代周期长、对生存环境敏感、容易受抑制等诸多问题导致厌氧氨氧化工艺启动时间长及运行稳定性差，限制了其在实际废水处理中的应用。有效的厌氧氨氧化强化措施有望解决这一问题。介绍了国内外关于厌氧氨氧化强化途径的研究进展，重点评述了无机碳、铁元素、物理场（如电场、磁场、超声波等）在强化厌氧氨氧化菌生长代谢、加速厌氧氨氧化工艺启动以及提升工艺脱氮效能方面的可行性及潜在机理。分析认为 ...
李天皓 +5 more
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Rare Metals, Volume 45, Issue 11, November 2026.ABSTRACT Osteoarthritis (OA) therapy remains constrained by the coexistence of irreversible cartilage loss and a persistently hostile joint microenvironment characterized by oxidative stress, synovial inflammation, and impaired tissue‐regenerative signaling.
Xinyu Wu +11 more
wiley +1 more source