Results 21 to 30 of about 1,385,369 (163)
ABSTRACT Developing low‐energy‐input electrocatalytic systems for efficient hydrogen production is crucial for advancing sustainable energy technologies. The overall hydrazine splitting (OHzS) has emerged as a promising strategy to reduce the overall energy consumption by replacing the sluggish oxygen evolution reaction.
Haozhou Chen +13 more
wiley +1 more source
ABSTRACT Articular cartilage regeneration remains a significant challenge because of its limited intrinsic healing capacity and the inadequacy of conventional treatments for restoring structural and functional integrity. In this study, a novel injectable composite hydrogel scaffold was designed to mimic the extracellular matrix (ECM) of native ...
Zhong‐Lian Wu +13 more
wiley +1 more source
采用冷融技术对城市污水处理厂的剩余污泥进行了预处理, 分析了剩余污泥在-18℃下冷冻不同时长并于室温下解冻后, 污泥的沉降性能、脱水性能等的变化情况。试验结果表明剩余污泥经13 h的冷冻作用后, 污泥的沉降性能和脱水性能都有很大程度的提高, 而污泥完全冻结后继续延长冷冻时间至22 h时, 污泥的沉降性能和脱水性能并没有进一步的改善。结果还表明, 随着冷冻时间的增加, 剩余污泥的pH下降而SCOD上升。
李玉瑛, 李冰
doaj
为了使污水处理厂出水中的氮、磷浓度进一步降低,制备出了一种石灰石改性硫磺材料,通过批次实验和生物滤池实验探究其脱氮除磷性能。结果表明,硫磺/石灰石体积比为3∶1的改性材料脱氮除磷效果最佳,发泡可以提高改性材料脱氮除磷性能,改性材料对HRT有较好的适应性。当HRT=1 h,进水NO3--N、PO43--P分别为20、1 mg/L时,生物滤池NO3--N、PO43--P去除率分别高于89%、65%。微生物群落分析显示,生物滤池中硫自养反硝化菌丰度大于79%。
罗黎煜 +4 more
doaj
ABSTRACT The design of nanoparticles confined in hollow N‐doped carbon structures is crucial for improving the oxygen reduction reaction (ORR) kinetics, yet achieving this remains a significant challenge. In this work, hollow porous nitrogen‐doped carbon encapsulated FeP/Fe2P (H‐FeP/Fe2P) were successfully constructed via a templating method combined ...
Li‐Xia Wang +8 more
wiley +1 more source
研究了微滤法脱除皮革废水中有机物的性能,并考察了其影响因素,对其主要操作条件进行了优化。试验中以COD指标来表征微滤法对有机物的脱除性能。其对皮革废水中COD去除率约为40%,酸性条件有利于COD去除,最佳操作pH为5,且蛋白质并不是影响皮革废水中COD水平的主导因素。同时比较了微滤法、活性炭吸附、生物吸附、超滤等方法对皮革废水中COD的脱除性能。
李嘉, 苏海佳, 谭天伟
doaj
ABSTRACT The article investigates the management of water supply infrastructure in Natal, Brazil, analyzing the alignment between the utility's investments and user demands during the period from 2016 to 2019. Using data from the Customer Service Center (CAU) and official investment information, it was identified that approximately 67% of complaints ...
Loiane Tamara dos Santos Alves Romanato +3 more
wiley +1 more source
对六种聚丙烯酰胺溶解性能、粘度性能和脱水效果进行对比试验研究。从技术和经济角度综合考虑,在小试中优选出两种溶解时间短、粘度高、脱水效果好的聚丙烯酰胺。以化纤污水剩余污泥为处理对象,卧螺机为机械脱水设备,对优选出的两种聚丙烯酰胺进行上机应用试验。试验结果表明,溶解聚丙烯酰胺时,可适当加热或提高搅拌速度,以缩短溶解时间;英国联合胶体有限公司Zetag 89聚丙烯酰胺溶解性能、粘度性能和对化纤污水处理后剩余污泥脱水效果优于其他品种聚丙烯酰胺。
杨正富
doaj
Clip Voice: Misogyny and the Renegotiation of a Gendered Vocal Style in Chinese Digital Discourse
ABSTRACT The participatory culture of social media allows women's voices to be heard but also parodied and policed. On Chinese social media platforms, where performers rapidly adopt and transform vocal trends for engagement, discourse on gendered vocal styles has proliferated.
Zichuan Yu, Rebecca Lurie Starr
wiley +1 more source
纳滤和反渗透膜表面形貌结构、亲疏水性的性质与膜脱盐率、水通量等性能存在一定关系。对几款商用纳滤、反渗透膜进行表面形貌结构、表面粗糙度、亲水性表征。结果表明,纳滤膜表面平整粗糙度低、亲水性强、脱盐率较低,但水通量高。反渗透膜表面存在大量疏松的峰谷结构,比纳滤膜粗糙度更大、亲水性强。对比两款海水反渗透膜,推测调整反渗透膜“叶片”大小和数量可调节反渗透膜的脱盐率和水通量性能。
王伟, 陈中海, 潘巧明, 谭惠芬
doaj

