Results 31 to 40 of about 1,259,540 (103)
Ecology and Evolution, Volume 16, Issue 5, May 2026.This study reveals a shift in woody plant community assembly from competitive exclusion in early succession to habitat filtering in later stages within karst areas. Environmental distance (80.54%) contributed significantly more than geographical distance (9.95%), providing strong quantitative evidence that niche processes, particularly habitat ...
Hongfen Hu +5 more
wiley +1 more source
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT With the growing severity of volatile organic compounds (VOCs) pollution, metal‐organic frameworks (MOFs)‐derived materials offer a promising solution through efficient photothermal catalysis. In this paper, M‐MnOx (M = Cu, Ni, Co, Fe) catalysts derived from manganese‐based MOFs were successfully prepared by the sacrificial template method and
Yizhong Liao +10 more
wiley +1 more source
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Giga‐casting, a near‐net‐shape manufacturing process widely used in sectors such as new energy vehicles and aerospace, demands aluminum alloys with high integration, efficiency, and comprehensive performance. However, traditional die‐cast alloys still face two core bottlenecks: the strength–ductility trade‐off and high‐temperature ...
Zhanwei Su +3 more
wiley +1 more source
Gongye shui chuli, 1998 描述了用黄铁矿和还原铁粉为原料制备重金属废水净化剂的方法，以及该净化剂处理重金属废水的应用方法。该净化剂对重金属废水的处理效率受制备和应用两方面的多种因素影响。并对含砷、铜和镉的废水进行了处理，对温度、粒度、配比、pH值、用量、时间等影响因素进行了讨论。结果表明该净化剂的制备和应用是简单、有效和经济的。
陶秀成 +3 more
doaj +2 more sources
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Environmental pollution across water, air, and soil systems poses escalating threats to human health and ecosystem stability, driven by heavy metals, persistent organic pollutants, particulate matter (PM), bioaerosols, and toxic gases. Conventional remediation technologies often suffer from limited selectivity, insufficient efficiency, and the
Junjie Qi +6 more
wiley +1 more source
, 1991 一种用于工业废气，特别是硝酸厂尾气中氮氧化物净化的催化剂以分子筛和Ａｌ2Ｏ3混合物作为载体、铁、铜、钒和／或微量铂元素为活性组分，使用这种催化剂在３０，０００－８０，０００时-1空速下，２２０－２５０℃范围内ＮＨ3／ＮＯx为０．９－１．２时可高效净化ＮＯx（含２０００－１０００ｐｐｍＮＯx气体可净化到２００ｐｐｍ以下），该催化剂含有金属铂后可使反应温度降至２００℃左右，且ＮＯx转化率可以９８％，此外催化剂无毒，氨耗低、寿命长 ...
李北芦, 吴春田, 李时瑶
core
Gaoya dianqi, 2002 放电等离子体技术在净化居室环境方面具有独特的作用。文中综述了用于净化居室空气的放电等离子体反应器结构和类型 ,放电对除去居室空气中的微粒状物质、乙醛和臭气物质等的影响 ,以及放电等离子体与催化剂合用对净化居室环境的影响等。讨论了放电等离子体技术在净化居室环境方面的进一步研究方向及应用前景。
胡辉, 李胜利, 王万林, 李劲
doaj
Ultrasound in Obstetrics &Gynecology, Volume 67, Issue 5, Page 613-622, May 2026.ABSTRACT Objectives To evaluate the effect of aspirin on gestational age at delivery due to preterm pre‐eclampsia (PE) in women with chronic hypertension (CH), to assess the predictive performance of the Fetal Medicine Foundation (FMF) first‐trimester competing‐risks model for preterm PE in this high‐risk group and to evaluate how parity, previous PE ...
D. L. Rolnik +23 more
wiley +1 more source
, 1991 一种内燃机排气催化净化器由上、下壳体，前置催化床层，主体催化床层和导流散热板组成，催化剂床层用无机隔热材料包绕后装填到壳体内。由于采用无机隔热包层，使催化剂床层与壳体间不必固紧或加密封件，使其结构简单，加工精度下降，组装容易。该净化器加有导流散热板可防止地面可燃物被引燃，同时增加前置净化催化剂床层，可有利于气流分布的改善，防止了汽车不正常运行时喷油所引起的主体催化剂床层被烧坏，既提高净化率又延长了净化器的使用寿命 ...
李北芦 +3 more
core
, 2015 对生物质粗燃气中焦油净化和组分调变技术进行了综述,分析了影响气化炉内净化技术的气化工况条件和气化炉添加料等因素,介绍了天然矿物催化剂、碳酸盐催化剂、镍基催化剂等目前应用广泛的气化炉下游净化重整催化体系,简要介绍了粗生物燃气的组分调变 ...
定明月 +6 more
core +4 more sources