Results 61 to 70 of about 33,620 (178)
Gongye shui chuli, 2009 近年来国外去除饮用水中有机物的方法有混凝澄清、活性炭吸附、膜分离以及离子交换法等,其中离子交换法可有效地去除饮用水常规处理产生的消毒副产物--低分子有机物。进而从离子交换树脂的本身特征、水质特征和有机化合物特征3方面详细讨论了离子交换去除饮用水中有机物的影响因素。
李红艳, 李亚新, 岳秀萍
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Unveiling Entropy‐Driven Hard‐Tough Synergy Mechanisms in High‐Entropy Carbonitride Ceramics
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT High‐entropy ceramics manifested promise for extreme environments, yet their phase stability and mechanical synergy mechanisms remain elusive. Herein, entropy‐difference carbonitrides, including (TaTiV)CN, (TaTiVNb)CN, and (TaTiVNbHf)CN, were designed and consolidated via spark plasma sintering.
Long Zhao +6 more
wiley +1 more source
Gongye shui chuli, 2002 对强化混凝去除黄浦江水的有机物进行了试验研究。尽管增加混凝剂投加量和降低 pH都能有效地提高去除有机物的效果, 但降低 pH去除有机物更有效。不同的 pH, 达到最佳有机物去除效果所需的混凝投加量是不同的, pH越低, 所需的投加量就越少。就黄浦江水来说, 达到最佳有机物去除效果的硫酸铝投加量为 8mg/L(以Al计), pH在 5.5, DOC和UV254的去除率可分别达到 46%和57%, 较常规处理方法, 去除率可提高1倍。强化混凝也能有效地去除消毒副产物。
董秉直, 曹达文, 范瑾初
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World Medical &Health Policy, Volume 18, Issue 3, September 2026.ABSTRACT Confrontational violence still puts catastrophic burdens on children, with 2024 being the highest recorded levels of displacement, malnutrition, injury, and deprivation in contemporary humanitarian history. Children's surgical care is still grossly underrepresented in health responses worldwide in the prevention of avoidable deaths and long ...
Gaurav Chanderprakash Mittal +4 more
wiley +1 more source
Gongye shui chuli厌氧氨氧化（Anammox）废水脱氮技术具有能耗低、无需外加有机碳源、污泥产量少、温室气体排放量少等优势，但其运行效能受有机物所影响。综述了有机物对Anammox系统的双重效应，即低浓度易降解有机物可通过与反硝化耦合、促进胞外聚合物分泌、促进厌氧氨氧化菌（AnAOB）混养代谢、强化电子传递以及缓解重金属毒性等机制提升脱氮效能，而高浓度或毒性有机物则通过底物竞争、酶活性抑制及细胞结构破坏等途径导致系统性能恶化。最后，对有机物影响Anammox系统这一领域的研究进行了展望 ...
俞益辉, 丁玲玲, 盛秉诚
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, 2018 采用室内培养的方法，以富营养化湖泊太湖为例，研究了沉积物有机质矿化过程中碳、氮、磷的迁移特征.结果表明，在沉积物中的有机质矿化过程中，碳以溶解性无机碳释放至水中，同时以CH4和CO2形式释放至大气中，培养结束时，CH4和CO2累积排放含量分别为1492.21和498.96 mg/g（dw），其中CH4占气态碳的89.16%（以C质量计）；此外，大量的氮、磷营养盐释放至上覆水体，水中总氮、总磷和铵态氮的最高浓度分别是初始浓度的62.16、28.16和139.45倍，而硝态氮浓度在整个培养过程中逐渐下降 ...
闫兴成 +6 more
semanticscholar +1 more source
Intangible drivers of tolerance shape human–elephant coexistence in Southwest China
People and Nature, Volume 8, Issue 8, Page 2763-2780, August 2026.Abstract Southwest China is home to a small but rapidly expanding population of Asian elephants (Elephas maximus), whose growth has intensified conflicts with people living in shared landscapes. These conflicts result in substantial economic losses and occasional human casualties. This coexistence paradox—where conservation success leads to significant
Xiaoyu Yu +4 more
wiley +1 more source
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The regeneration of osteoporotic bone defects is severely hampered by compromised endogenous healing capacity, demanding advanced strategies that actively orchestrate pro‐osteogenic microenvironments. Here, we report an integrated, self‐powered osteo‐regenerative system that uniquely leverages a dual ultrasound‐responsive piezoelectric ...
Bing Tan +6 more
wiley +1 more source
Gongye shui chuli, 1986 通过试验考察了用UV法(紫外线吸收法)测定水中有机物时水中共存浊度对测定结果的影响。提出了采用260nm波长UV法测定水中有机物时,用700nm消光值进行浊度校正的有机物测定方法。有机物浓度以ppm腐植酸表示。
刘国平, 何广仁, 张广孙
doaj
Insights Into the Temperature‐Dependent Oxidation Mechanism of Metallic Cerium in H2O‐N2 Atmospheres
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Metallic cerium (Ce), a widely used surrogate for actinide metals, enables mechanistic studies of reactions in complex gas environments under controlled and safer laboratory conditions. Here, the oxidation behavior of Ce in H2O‐N2 mixed atmospheres was investigated from 200°C to 350°C using in situ thermogravimetry–mass spectrometry, in situ X‐
Kun Huang +10 more
wiley +1 more source