Results 21 to 30 of about 1,371,758 (148)
ABSTRACT Developing efficient catalytic thermal desorption systems is of great significance in the field of sustainable soil remediation. Herein, novel Mn–Ce solid solution modified Co3O4 nanocrystals were successfully prepared for the removal of perfluorooctanoic acid (PFOA) in soil.
Yu‐Hao Liu +8 more
wiley +1 more source
Nitrogen Anchoring Effect Triggering Improved Reversible Hydrogen Storage of Mg(BH4)2
ABSTRACT This research uncovered the influence of nitrogen‐doped MXene Ti3CN on the reversible hydrogen storage properties of Mg(BH4)2. The Mg(BH4)2‐20Ti3CN composite began releasing hydrogen at a temperature of 80°C. In addition, the composite discharged over 8.8 wt% hydrogen at a comparatively lower temperature of 270°C, whereas the pure Mg(BH4)2 ...
Zhen‐Xuan Ma +7 more
wiley +1 more source
High nitrogen enrichment buffers plant photosynthesis against herbivory damage
Read the free Plain Language Summary for this article on the Journal blog. Abstract Herbivorous insects and nitrogen deposition are key drivers of ecosystem productivity under global change. However, their combined effects on plant photosynthesis, particularly during insect outbreaks, remain poorly understood in natural ecosystems.
Yongqiang Zhang +6 more
wiley +1 more source
Summary Fine roots are critical for soil resource uptake, yet how declining plant diversity alters fine root biomass (RB) and traits remains unclear. We tested how plant functional trait dissimilarity in shade tolerance, drought tolerance, growth rate, and nitrogen‐fixation ability drives variation in root attributes.
Sai Peng, Yakun Zhang, Han Y. H. Chen
wiley +1 more source
采用SBR工艺处理氨氮废水,试验结果验证了好氧反硝化的存在,在好氧脱氮总量中按照氨氮→硝态氮(包括硝基氮和亚硝基氮,以NOX--N表示)→含氮气态物这一传统生物脱氮途径进行的仅占46.5%,在扣除生化合成反应所需氮素以及游离氨解析吹脱之外,尚有半数左右的氮在硝化过程中尚未形成NOX--N之前便已转化为不明物质而丢失。
刘军 +4 more
doaj +2 more sources
为揭示不同施肥时机(全过程、前1/2和后1/2入渗水量施肥)下土壤水氮运移转化规律,以砂壤土和黏壤土质地的一维垂直肥液(尿素)入渗试验为基础,重点分析不同施肥时机下土壤水氮分布与再分布过程中的运移转化规律,并量化比较其对土壤中氮素含量的影响。结果表明,施肥时机对土壤累积入渗量和湿润体中水分分布影响微小,但对不同形态氮素运移转化影响显著;砂壤土和黏壤土入渗结束时刻,全过程和后1/2入渗水量施肥时,其尿素态氮、铵态氮(NH4+—N)和硝态氮(NO3-—N)含量均随土层深度增大而减小;前1/2入渗水量施肥时 ...
马敬东 +4 more
doaj
Read the free Plain Language Summary for this article on the Journal blog. Abstract Nitrogen (N) deposition strongly affects litter decomposition and nutrient release, thereby reshaping carbon cycling in terrestrial ecosystems. Although most studies have focused on above‐ground litter, the effects of N addition on fine root decomposition and their ...
Yuneng Wang +5 more
wiley +1 more source
白腐担子真菌黄孢原毛平革菌 (PhanerochaetechrysosporiumBurds)能产生降解木质素及其模式化合物的木质素过氧化物酶同工酶 ,其表达受诸多因素的影响 .利用反转录聚合酶链式反应 (RT PCR) ,分析了编码三个主要过氧化物酶同工酶H2 ,H8和H10的基因GLG1,GLG3和GLG2及其相关基因GLG5在 7种不同组合的氮、碳等营养培养基中和不充纯氧条件下的转录 .结果显示 ,所分析的 4个木质素过氧化物酶基因对不同碳氮组合的转录应答存在显著的差异 .在不同的 ...
冯红, 张义正
doaj
Read the free Plain Language Summary for this article on the Journal blog. Abstract Moso bamboo (Phyllostachys edulis) invasions into broadleaf forests can cause serious ecological problems, such as reducing biodiversity and disrupting community succession.
Ting Zhou +5 more
wiley +1 more source
为探明缓释尿素与普通尿素掺混比例对安徽小麦花后氮素运转特征和土壤氮素盈余的影响,分别选择安徽省北方小麦产区小麦—玉米轮作和南方小麦产区小麦—水稻轮作方式,土壤类型分别为两合土和黄棕壤,设置不施氮肥处理(CK)、农民习惯处理(Ncon)、减少普通尿素用量的优化氮素处理(Nopt)、缓释尿素及其掺混普通尿素处理(SRU1、SRU2、SRU3)和普通尿素全部基施处理(SRU4),分析了不同施肥处理在两种土壤上小麦花后氮素转运、产量、氮肥利用率和土壤无机氮积累量。结果表明:与黄棕壤比较 ...
袁嫚嫚 +5 more
doaj

