Results 111 to 120 of about 2,125,466 (224)
Gongye shui chuli, 2011 厌氧消化前采用不同的预处理方法是增强厌氧消化性能的关键,预处理能促进污泥内微生物细胞的分解,加速胞内物质的释放,加快污泥的水解速率。综述了当前研究和应用较多的物理、化学和生物法等污泥预处理技术,如热处理、冻融法、超声波处理法、酸碱法、加盐法、凝聚与絮凝调理、生物酶处理等,分析了各种方法的原理、特点和处理效果。
白杨, 王鹤立, 李广, 韩冰
doaj
Partisanship, Deservingness, and the Attitudinal Policy Feedback Process for Social Policy
Policy Studies Journal, EarlyView.ABSTRACT In an era of identity‐based partisan polarization, we examine whether social policies can still generate positive attitudinal feedback among beneficiaries. Drawing on nationally representative survey data, we demonstrate that partisanship conditions the policy feedback process through divergent perceptions of group deservingness.
Chris Faricy, Christopher Ellis
wiley +1 more source
, 2010 本发明提供了一种用于催化裂化汽油生产BTX芳烃的催化剂及其制备方法，该催化剂成分的重量百分比为VIII族贵金属0.05～2.0％，Zn??0.2～5.0％，Sn??0.2～5.0％，ZSM-5/ZSM-11共结晶分子筛5.0～80％，Al2O3余量；本发明的催化剂具有很好的芳构化活性和BTX选择性及耐硫抗烯烃性能，用于催化裂化汽油或和直馏汽油或掺和焦化、裂化等汽油组分制芳烃，原料无需加氢、脱硫、脱氮、脱烯烃等精制，而且催化剂再生无需补氯 ...
王玉忠 +6 more
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Higher Education Quarterly, Volume 80, Issue 3, July 2026.ABSTRACT Amid intensified global talent competition and domestic demographic pressures, China, Japan and South Korea (hereafter, ‘Korea’) have expanded their international student policies beyond attraction and recruitment to include stronger measures for post‐study employment and retention, repositioning international students as strategic populations
Lilan Chen, Yingxin Liu, Xin Li
wiley +1 more source
, 2011 本发明公开了一种用于污水净化和回用的生物生态组合的方法及装置，步骤是：Ａ．待处理的污水经过格栅／调节池，将大颗粒物质除去;Ｂ．步骤Ａ处理的污水泵入一体式膜生物反应器中，在泵抽吸下渗透过膜;Ｃ．步骤Ｂ处理的污水流入中间贮水池;Ｄ．步骤Ｃ流出的污水分次进入复合垂直流人工湿地。装置包括格栅／调节池、一体式膜生物反应器、贮水池、复合垂直流人工湿地四单元，各单元通过管道连接，阀门控制。在一体式膜生物反应器、贮水池、复合垂直流人工湿地各单元出口设置旁路管道 ...
贺锋, 成水平, 吴振斌, 肖恩荣
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Gongye shui chuli, 2019 药物和个人护理品（PPCPs）中的医药品具有生物毒性大、环境风险高、难生物降解等特点。常规的污水处理工艺、饮用水处理工艺对水中痕量的医药品类污染物的降解都极其有限。高级氧化技术（AOPs）能够有效降解水体中的医药品类污染物，且降解后其生化性显著提高。阐述了目前水中医药品的污染现状以及臭氧氧化法、UV/H2O2法、Fenton法、UV/S2O82-法、UV/TiO2法以及高锰和高铁氧化法等高级氧化技术降解医药品类污染物的研究进展。
张亚雪 +6 more
doaj
The underappreciated roles of fog and dew on vegetation and biocrusts
New Phytologist, Volume 251, Issue 1, Page 46-63, July 2026.Summary Fog and dew represent minor components of ecosystem water budgets in most ecosystems. However, fog and dew can play an essential role in ecosystem dynamics and are particularly important for water‐limited systems. In addition to serving as direct water inputs, fog and dew can influence microclimate and water redistribution, thereby promoting ...
Lixin Wang, Yue Li, Mengyun Sun, Na Qiao
wiley +1 more source
, 2014 一种氯化石蜡的制备方法，采用石蜡和液氯为原料，以偶氮化合物为催化剂，催化氯化制备氯化石蜡。该方法与现行的热氯化法比较，反应速度明显提高，缩短了生产周期；氯化过程中，长链石蜡烷烃没有明显碳链断裂现象，此方法能较好地控制产品中短链氯化石蜡的含量。本方法工艺简单，易于操作 ...
余正坤, 赫巍
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Gongye shui chuli, 2008 分析了Fenton工艺处理过氧化氢生产废水的缺点，经过对实验结果的分析，指出pH和残余H2O2是影响Fenton工艺处理效果的重要因素。后一步的生物处理实验结果表明：普通的生物接触氧化法处理物化出水，在进水CODCr为100～650mg/L的条件下，出水CODCr为150～300mg/L。在相同的进水和实验条件下，采用HSB(highsolutionbacteria)微生物，出水CODCr小于150mg/L，达到GB8978-1996二级排放标准。通过实验证明了Fenton ...
杨庆, 丁昀, 班云霄, 马东华
doaj
People and Nature, Volume 8, Issue 6, Page 1705-1727, June 2026.Abstract Active outdoor play has been positioned in the literature as an opportunity to address concerns over climate (in)action and the rising trend of disconnection from the outdoors and nature. The objective of this systematic review was to examine associations between active outdoor play and people's connection to nature and/or environmental ...
Louise de Lannoy +10 more
wiley +1 more source