Results 21 to 30 of about 816,899 (143)
Shuitu Baochi Xuebao, 2008 在海拔2 500,2 700,2 850,3 000 m的草原上利用Li-6400-09土壤呼吸叶室测定仪测定一个生长季节祁连山排露沟流域放牧草原土壤呼吸速率,分析不同环境条件下土壤CO2释放速率对气候和土地利用的反馈作用。辅助测定地面温度(0 cm、最低温度和最高温度)、地下温度(5,10,15,20 cm)、空气温度、土壤含水量。通过2003-2006年的观测结果表明:(1)土壤呼吸速率有明显日变化规律,7:00-14:00逐渐升高,14:00达到最大值,其值为8.92μmol/(m2.s ...
车宗玺 +4 more
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Shuitu Baochi Xuebao, 2023 为揭示森林生态系统养分循环和水分循环对氮沉降的响应机制,以滇中高原华山松(Pinus armandii)和云南松(Pinus yunnanensis)为研究对象,开展野外氮添加下凋落叶、枝原位分解研究试验,设置对照、低氮、中氮和高氮共4个处理,利用尼龙网袋法和室内浸泡法,探究凋落叶、枝养分元素残留率、持水量和持水率及吸水速率对氮添加的响应。结果表明:(1)随着分解时间的持续,2种林分凋落叶、枝碳(C)、氮(N)、磷(P)分别呈释放、富集—释放、富集过程,凋落叶C、N、P残留率显著小于凋落枝(p＜0.05)
肖文贤 +4 more
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Although alloy‐based materials present potential for peroxymonosulfate (PMS) activation, metal ion leaching remains severely restricted during the pollution degradation process. Herein, the porous carbon‐supported Fe–Cu alloy derived from industrial copper slag was prepared to remove the organic pollutants from wastewater while inhibiting the ...
Xuanren Chen +10 more
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT A central challenge in alkaline water electrolysis is the development of hydrogen evolution reaction (HER) electrocatalysts that simultaneously maintain high activity and structural stability at industrial current densities. Hydroxide‐based supports that facilitate water dissociation are particularly susceptible to over‐reduction and ...
Feng Chen +9 more
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Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Heteroatom coordination regulation is an effective strategy to enhance Fenton‐like catalysis of single atom catalysts, yet its impact on the local microenvironment of active sites still requires in‐depth investigation. Herein, Cl2–Fe–NC catalysts with axial Cl coordination are prepared.
Jing‐Hao Yan +6 more
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Gongye shui chuli, 2017 针对生产间羟基-N，N-二乙基苯胺产生的苯胺类废水，研究大孔树脂吸附与微电解-Fenton联合法预处理苯胺类废水的效果。结果表明，选用H-103型树脂，动态吸附流速4 BV/h，吸附量7 BV，解吸速率2 BV/h条件下，COD脱除率达60%以上；微电解-Fenton法处理吸附出水，pH=3、铁屑投加质量浓度100 g/L，铁碳比为3∶1，H2O2用量6 mL/L，反应时间4 h，COD脱除率达62%以上。废水可生化性从0.05提高到0.32，达到预处理目的。
张亚通 +4 more
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Zhejiang Daxue xuebao. Lixue ban, 2011 针对水吸收法难于处理非（弱）水溶性有机废气的问题，以煤油为油相，失水山梨醇三油酸酯(Span-85)为乳化剂，制得水相/油相(W/O)乳化液膜，进行了吸收模拟乙酸乙酯废气的研究.结果表明：乳化液膜体系对乙酸乙酯废气吸收效率最高可达89%，1 h内吸收效率大于50%以上；低温、低表面活性剂体积分数和高废气质量浓度有利于提高吸收速率，在实验条件下存在最佳油水比1：1.
WANGHao(王浩) +2 more
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Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Germanium is a critical dispersed metal, yet sustainable recovery from dilute solutions is limited by sorbents that are difficult to regenerate and operate in continuous mode. Here, we fabricate a regenerable 3D‐printed hydrogel monolith (3D‐ATO‐GS) by integrating hydroxyl‐rich amorphous TiO2 nanoparticles into an alginate/gelatin scaffold ...
Wenhuan Guo +6 more
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Aqueous zinc‐ion hybrid capacitors (ZICs) bridge the gap between high‐energy batteries and high‐power supercapacitors, yet their performance is fundamentally bottlenecked by the micropore confinement effect in carbon cathodes, which restricts hydrated Zn2+ transport and active site utilization.
Qian Li +12 more
wiley +1 more source
Gongye shui chuli, 2007 研究了高硅ZSM-5分子筛去除水中苯胺的效果,模拟废水的静态试验结果表明:ZSM-5分子筛对苯胺的吸附速率非常快,吸附时间为5min时,吸附率>90%;当分子筛用量为8g/L时,水中苯胺的吸附率可达95.7%;随着pH的增加,苯胺在沸石上的吸附率增大;温度增加,吸附率有所增加,但即使在常温下,苯胺的吸附率也能达到96%;ZSM-5分子筛对苯胺的最大吸附量可达37.3225mg/g,其吸附规律较好地符合Langmuir吸附等温式。对实际苯胺废水的处理结果也表明ZSM-5分子筛不仅可有效地去除苯胺 ...
石建鹏, 完颜华
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