Results 81 to 90 of about 1,857,802 (193)

生物质能源转化技术与应用(Ⅷ)——生物质的生物转化技术原理与应用

open access: yes, 2008
生物质能源是惟一可再生、可替代化石资源转化成气态、液体和固态燃料以及其他化工原料或者产品的碳资源。随着化石资源的枯竭和人类对全球性环境问题的关注,生物质能源替代化石资源利用的研究和开发,已成为国内外众多学者研究和关注的热点。本系列讲座主要讲述以生物质资源为主要原料,通过不同途径转化为洁净的、高品位的气体、液体或固体燃料。本讲主要综述了木质纤维素的生物转化过程的关键技术,包括原料预处理、纤维素酶解、微生物发酵和产品的分离提纯,指出生物转化技术的发展趋势是非粮生物质的生物转化和利用 ...
王岚, 陈洪章
core  

Research Progress on Metal‐Organic Framework Materials in Corrosion‐Resistant and Antimicrobial Metal Functional Coatings

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT Metal‐organic frameworks (MOFs) hold significant potential across numerous advanced disciplines due to their exceptional properties, including high specific surface area, tunable porosity, structural diversity, and customizable functionality. Increasing attention has been directed toward employing MOFs in coatings that offer both antimicrobial
Yanchun Zhao   +7 more
wiley   +1 more source

腈纶废水生化处理研究

open access: yesGongye shui chuli, 2004
通过试验探讨了二步法腈纶废水进行好氧活性污泥生化处理及各种强化措施的性能,研究表明单纯的活性污泥法难以实现腈纶废水达标排放,Fenton试剂与O3氧化及厌氧酸化作为好氧生化前处理手段对于提高腈纶废水可生化性作用较小,富营养物添加及生活污水共基质条件也不能增强生化处理时难降解COD部分的去除率,腈纶生化处理后废水有必要增加物理化学方法实现达标外排。
赵朝成   +3 more
doaj  

一种光催化重整生物质制氢的TiO2光催化剂及制备与应用

open access: yes, 2010
一种用于光催化重整生物质制氢的TiO2光催化剂,锐钛矿和金红石相的晶相组成可以在较宽范围内调控,锐钛矿和金红石相的晶相组成通过XRD上锐钛矿最强衍射峰(101)和金红石最强衍射峰(110)的强度计算得到。本发明的TiO2光催化剂用于光催化重整生物质制氢反应中,大幅度的提高了产氢活性并有效抑制一氧化碳的生成,其中在光催化重整甲醇反应中,该TiO2光催化剂的产氢活性是TiO2参比剂(P25)的五倍左右,氢气中CO的含量至少降低两个数量级,甚至到5ppm以下 ...
徐倩   +5 more
core  

Tuning Y‐Mg Supports for Improved Ni‐Catalyzed NH3 Decomposition: Structural Modulation and Mechanistic Insights

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT Catalytic NH3 decomposition has garnered substantial attention for hydrogen transformation and storage. Ni‐based catalysts continue to suffer from limited thermal stability and suboptimal low‐temperature activity, largely attributed to an incomplete understanding of the structure‐activity relationships and reaction mechanisms governing their ...
Tao Wen   +8 more
wiley   +1 more source

Fe0-生物铁法强化污水处理研究进展

open access: yesGongye shui chuli, 2017
生物铁法是一种研究广泛的生物强化处理工艺。在总结传统生物铁法的基础上,详细介绍了Fe0-生物铁法的作用机理、研究现状及发展前景。相比传统生物铁法,Fe0-生物铁法能够持续产生铁碳微电解作用和发生类Fenton效应,这些作用对微生物降解污染物具有协同强化作用;再者,Fe0能以载体的形式投加到反应器中,大大减小了工程应用的难度。针对Fe0-生物铁法应用现状,指出今后的研究方向应集中在开发适宜于Fe0-生物铁法的工艺、工艺参数及性能良好的Fe0材料等方面。
柴志龙, 赵炜, 王亚娥, 李杰
doaj  

苄基苯乙胺类生物碱的植物化学研究进展

open access: yes, 2009
苄基苯乙胺类生物碱是主要分布于石蒜科植物中具有较强生理活性的一类重要生物碱。本文概述了该类生物碱的化学结构、生源关系和波谱特征等 ...
丁立生, 郑颖, 刘鑫
core  

Structural Distortion for Polyoxometalate‐Derived Metal Sulfide Induced by In Situ Intercalation With Organic Ligands Achieving Efficient Electrocatalytic Hydrogen Evolution Performance in Alkaline/Seawater Medium

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT The electrocatalytic water splitting technique was widely taken for hydrogen evolution, due to its cost‐effectiveness and environmental friendliness. The design of electrode material as electrocatalysts play a key role in achieving high efficiency.
Yaling Zhu   +5 more
wiley   +1 more source

我国温带山地森林48种常见树种叶片重量-出叶强度的关系

open access: yes, 2015
叶片是植物的主要光合器官,其质量与数量的权衡关系体现植物对环境的适应策略。在全球气候变化的背景下,研究叶片质量与数量关系有助于理解植物对环境变化的响应趋势。该研究应用标准化主轴回归方法,探讨了我国温带山地森林中48个常见树种的单叶干重与出叶强度的权衡关系。结果表明,所有物种以及落叶阔叶林、常绿和落叶阔叶树种、单叶以及亚冠层阔叶树种的单叶干重与出叶强度表现为异速生长关系;针叶林、针阔混交林、常绿及落叶针叶树种、复叶以及冠层阔叶树种则表现为等速生长关系。研究结果表明,叶大小和出叶强度并无恒定的权衡关系 ...
池秀莲, 刘长柱, 郭强
core  

From pollen provision to pollinator: Species‐specific sterol assimilation by wild bees in urban landscapes

open access: yesFunctional Ecology, Volume 40, Issue 6, Page 1906-1920, June 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Human‐driven landscape change, particularly urbanization, is reshaping pollinator communities, yet the functional traits that mediate species persistence remain poorly understood. Dietary specialization is commonly used to predict species vulnerability.
Yan Yang   +5 more
wiley   +1 more source

Home - About - Disclaimer - Privacy