Results 31 to 40 of about 13,631 (115)
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT The large‐scale application of titanium is limited by its high production costs, as well as its low utilization and recycling rates. Therefore, efficient recovery of titanium scrap offers a viable pathway to reduce its cost. Molten‐salt electrolysis offers a promising route for upcycling titanium scrap, but the conventional method, which ...
Haoyu Fang +4 more
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Shuitu Baochi Xuebao, 2018 通过室内模拟冷冻和放水冲刷试验，采用2个放水流量（1，2 L/min）、2个土壤处理（未冻坡面，冻结坡面）和4个覆沙厚度（0，1，2，3 cm）研究不同处理对覆沙黄土坡面产流产沙的影响。结果表明：（1）相同流量条件下，覆沙坡面初始产流时间延长，随着覆沙厚度的增加，延长效果越明显，而冻融作用使坡面初始产流时间缩短；不同处理坡面的产流产沙峰值均增大，并且产流量与产沙量的峰现时间具有不同步性。（2）不同流量条件下，不同处理坡面总产流量是对照坡面的1.02~1.28倍，冻结坡面和冻结 ...
任宗萍 +6 more
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Longitudinal maternal hemodynamics in high‐risk pregnancies with different subtypes of pre‐eclampsia
Ultrasound in Obstetrics &Gynecology, Volume 67, Issue 5, Page 623-634, May 2026.ABSTRACT Objective To evaluate maternal cardiac adaptation during pregnancy by comparing longitudinal hemodynamic profiles between women identified as high risk for preterm pre‐eclampsia (PE) who subsequently developed preterm PE, term PE or remained unaffected, as well as low‐risk women.
J. Lin +10 more
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Shuitu Baochi Xuebao, 2018 针对淮北平原黄潮土水土流失严重的问题，为揭示其产流产沙规律，利用五道沟水文实验站大型人工模拟降雨径流试验场，开展了40，60，80 mm/h 3个雨强及5°，10°，15° 3个坡度产流产沙规律试验模拟。结果表明：坡面初始产流时间随坡度、雨强的增大而缩短，雨强、坡度越大缩短越不明显；单位时间产流、产沙量随降雨时间变化的转折点在产流后6~15 min，单位时间产流量随降雨时间变化表现为前期快速增加，中期缓慢增加，后期平稳，其中40，60 mm/h雨强单位时间产流量随坡度增加而减小，80 mm ...
杜明成 +4 more
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Piezocatalysis has garnered unprecedented research enthusiasm for applications in energy and environmental fields, as it can harvest the tiny vibration energy from the natural environment and convert it into electrical energy to drive catalytic reactions.
Feixue Gao +9 more
wiley +1 more source
Integrative Conservation, Volume 5, Issue 1, Page 137-149, March 2026.Pometia pinnata demonstrated life‐stage‐specific genetic responses to landscape features, with asymmetric gene flow patterns and population recovery following historical bottlenecks, revealing complex topographic and demographic influences on forest genetic structure.
Madhuparna Chatterjee +5 more
wiley +1 more source
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Aqueous zinc‐ion batteries (AZIBs) hold great promise for safe and sustainable energy storage, but their commercialization is impeded by severe Zn dendrite growth and interfacial instability. To address these challenges, we propose a defect engineering strategy employing ultrafine ZnAl2O4 (ZAO) nanoparticles (∼5 nm) with oxygen vacancy defects
Yilun Ren +9 more
wiley +1 more source
Shuitu Baochi Xuebao, 2005 模拟计算中的误差可以归结为两个方面:一方面是输入资料的误差,这涉及到站网的密度、空间位置、测验仪器和流域内信息的时空分布;另一方面是模型算法、结构,这里涉及到确定性和随机计算方法所引起的误差。地形对降雨量、产流量和产沙量的影响及其估算是一个十分重要的课题,同时也是一个相当困难和研究基础十分薄弱的课题。本文选用与ArcviewGIS藕合的SWAT来分析站网密度和雨量站所处的空间位置对模拟产流量和产沙量的影响。以卢氏流域为研究区域,以卢氏24个雨量站的气象资料以及下垫面资料为模型的输入 ...
陈利群 刘昌明 郝芳华
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Shuitu Baochi Xuebao, 2020 为了研究不同逆坡耕作强度导致的土壤位移对坡面水蚀的影响，以金沙江干热河谷区坡面径流小区为研究对象，在径流小区5°，10°，15°坡面上，进行单宽流量为0.6 m2/h的放水试验。在10°坡面的下坡位置设置0.05，0.10，0.20 m土层深度，分别代表连续耕作80，69，46年导致下坡位置土壤损失土层变薄情况。通过收集径流小区出口的产流量和产沙量，研究在不同坡度上的不同逆坡耕作强度导致的土壤位移对坡面产流率、产沙率、总流量和总产沙量的影响。结果表明：（1）在10°坡面，耕作年限越长，产流越快 ...
贾立志, 张泽洪
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Shuitu Baochi Xuebao, 2021 水土流失已成为我国主要的生态环境问题之一。基于安徽大别山区江子河小流域2012-2019年自然降雨径流泥沙观测资料，探讨雨型对不同农作物措施坡面产流产沙的影响，采用随机森林算法分析降雨因子与水沙之间的关系。结果表明，在不同场次降雨中，径流量、土壤流失量随降雨场次变化规律较一致，红薯措施产流量及土壤流失量较大，茶叶措施最小。降雨分为3类：A型降雨（低频率、长历时、大雨量、高雨强）、B型降雨（高频率、短历时、小雨量、低雨强）、C型降雨（较低频率、较长历时、中等雨量、较高雨强），对产流产沙的影响表现为A型 ...
张嘉懿 +3 more
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