Results 21 to 30 of about 7,149 (150)
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Graphitic carbon nitride (g‐C3N4) doped with 3d transition metals (3d‐TM@g‐C3N4) has gained attention as a noble metal‐free alternative for oxygen evolution and reduction reactions (OER/ORR). Yet the key mechanisms driving its performance remain debated, especially across different charge states.
Jing Zhang +6 more
wiley +1 more source
Shuitu Baochi Xuebao, 2019 在山西省连作春玉米区连续4年设置大田定位试验，设置不施氮肥（CK）、一次性基施尿素（CU1）、追施尿素（CU2）、树脂包膜尿素（PCU）、硫包衣尿素（SCU）、多酶金缓释尿素（MEU）6个施肥处理，研究施用缓控释氮肥对春玉米产量、氮肥去向及氮素平衡的影响，为春玉米氮素养分的科学管理技术提供参考。结果表明：（1）缓控释氮肥处理能够明显提高春玉米产量，促进氮素吸收。与CU1处理相比，SCU、MEU、PCU和CU2处理可分别提高春玉米产量17.51%，9.88%，9.62%，9.48 ...
解文艳 +4 more
doaj
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Formic acid (FA) is considered to be a safe and convenient hydrogen source; however, achieving controlled and efficient FA dehydrogenation under mild conditions using stable solid catalysts remains a significant challenge. Pd‐based catalysts have been extensively studied due to their superior catalytic activity to other metal catalysts.
Shuai Wei +10 more
wiley +1 more source
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT The development of novel oxygen electrocatalysts with cost‐effectiveness, scalability, high catalytic activity, and stability presents a significant challenge for zinc–air batteries (ZABs). The nitrogen‐rich lignin coordination network structure is synthesized through amine modification of lignin.
Ping‐Xian Feng +8 more
wiley +1 more source
Shuitu Baochi Xuebao, 2007 采用盆栽试验比较研究了等施用量及等氮量的硫包衣尿素(SCU)和普通尿素对水稻的增产效应以及氮肥利用效率的影响.结果表明:(1)在水稻生育前期,施用等氮量的SCU处理水稻生物量低于普通尿素处理;成熟期等氮量和等施肥量下,施SCU处理的水稻籽粒产量比普通尿素处理分别高出35.7%,19.3%,等氮量SCU处理水稻的千粒重较大而有效穗数较小;(2)SCU处理较普通尿素处理较大幅度地提高了水稻的氮肥利用率和水稻氮肥偏生产力,相同肥料施用量下,SCU氮肥利用率为47.35%～57.48 ...
张永春 +6 more
doaj +2 more sources
Functional Ecology, Volume 40, Issue 4, Page 983-1000, April 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Organic phosphorus mineralization is a critical process in the phosphorus cycle, governing phosphorus bioavailability for plants. The PhoD gene, which encodes the key enzyme alkaline phosphatase, serves as a valuable biomarker for this process.
Sandhya Mishra +3 more
wiley +1 more source
Shuitu Baochi Xuebao, 2018 为明确巢湖流域小麦季氮肥投入阈值，在连续3年田间试验条件下，研究了（2012—2014年）不同氮肥水平下（N0、N1、N2、N3、N4、N5分别为0，157.5，210.0，262.5，310.0，420.0 kg/hm2）小麦产量、植株氮素积累量、氮肥利用率、土壤无机氮残留量（0—20 cm）及氮素径流流失；同时，利用回归方程模型对其间的相关关系进行拟合。结果表明：（1）与不施氮肥相比，施用氮肥可不同程度提高小麦产量，其中以N3处理增加的比例最大，为64.8%。利用二次函数分析，当施用氮肥超过290 ...
徐云连 +5 more
doaj
Shuitu Baochi Xuebao, 2021 为探明地下水埋深与减施氮肥对夏玉米氮素吸收利用及产量的影响，基于大型地中渗透仪，研究了地下水埋深和施氮量对夏玉米氮素利用效率、植株氮素积累量、产量及其形成要素的影响，其中地下水埋深设2 m（G1），3 m（G2）和4 m（G3）3个水平，施氮量设减氮20%处理（240 kg/hm2，N1）、常规施氮处理（300 kg/hm2，N2）2个水平，不控水不施氮处理（G0N0）作为对照，共计7个处理。结果表明：（1）减氮20%条件下，夏玉米产量随地下水埋深增加呈减小趋势，氮素收获指数在埋深2 m下显著高于埋深3，
佘映军 +8 more
doaj
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Cost‐effective and efficient non‐noble‐metal catalysts for selective lignin hydrogenolysis remain elusive, representing a significant challenge in biorefinery. Here, we prepared a nitrogen‐doped carbon supported CoNi bimetallic catalyst, which was successfully derived from zeolitic imidazolate framework (ZIF) via high‐temperature pyrolysis ...
Xingwei Luo +3 more
wiley +1 more source
Shuitu Baochi Xuebao, 2006 以两个夏播玉米品种为材料，研究了不同类型氮肥与不同施氮量下华北平原夏玉米的水分与氮素利用及土壤氮素表观盈亏．结果表明：（1）随施氮量增大．产量、耗水量及水分生产效率（WPE）增大，氮肥利用率（NUE）降低；（2）夏玉米WPE与NUE具有较明显的基因型差异。WPE郑单958较大。NUE农大108较大；（3）wPE与NUE均受到氮肥类型的影响．WPE郑单958复合肥〉普通尿素〉包膜尿素．农大108处理间差异较小，以复合肥略大，普通尿素和包膜尿素相当。与普通尿素相比，包膜尿素与复合肥利用率较高 ...
易镇邪 +9 more
doaj +2 more sources