Results 51 to 60 of about 1,739,779 (162)
Shuitu Baochi Xuebao, 2019 采用室内培养试验，向土壤中添加小麦秸秆和不同量生物质炭，同时比较探究秸秆与生物质炭施用对土壤温室气体排放及微生物活性的影响差异。试验共设5个处理：土壤（S）、土壤+1%小麦秸秆（WT）、土壤+1%生物质炭（BC1）、土壤+2%生物质炭（BC2）和土壤+4%生物质炭（BC4）。在培养期内，施秸秆处理土壤CO2排放量比对照处理S显著增加约12.60%~2 005.63%，而施生物质炭处理降低约51.49%~97.93%。施秸秆处理的温室气体增温潜势（GWP）是对照处理S的1.12~19.24倍 ...
周际海 +6 more
doaj
Rare Metals, Volume 45, Issue 11, November 2026.ABSTRACT The high‐value conversion of biomass platform molecules is a key pathway for substituting fossil resources with renewables and promoting sustainable green chemical manufacturing. However, conventional thermocatalytic processes suffer from harsh reaction conditions, high energy consumption, and poor selectivity, whereas photocatalysis enables ...
Tingting Dong +4 more
wiley +1 more source
, 2014 生物质是自然界最丰富的含碳有机大分子功能体,它有望通过"生物炼制"实现"石油炼制"的辉煌。但是由于生物质资源本身及其转化过程的复杂性,生物质产业虽备受关注,却被认为是遥远的未来产业。传统的生物质资源化利用思路都是先耗费一定的能量破坏生物质结构,然后再进行转化,不仅没有考虑到产品的功能需求,而且过程的原子经济性不高。如何实现化学键更加复杂的固相木质纤维素生物质炼制是实现生物质产业的关键和难点。理想的生物质炼制的目的是以最大得率分离木质纤维原料中各个组分 ...
邱卫华, 陈洪章
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Shuitu Baochi Xuebao, 2022 生物炭作为一种土壤改良剂,近年来在提升土壤质量和作物产量方面效应良好。在全面梳理生物炭施用效果方面的最新研究基础上,总结了土壤理化性质、作物生长和产量对生物炭施用的响应和反馈规律。结果表明:(1)生物炭的来源、是否酸化、施用年限及施用量决定了施用后的土壤属性及作物产量变化幅度。一般来说,施用量增加、土壤容重降低,土壤孔隙度增加、土壤水力性质及入渗性能改善,土壤温度也增加。(2)由于土壤物理性质改变,施用生物炭最终降低了土壤表层的盐分表聚。生物炭对土壤pH的调节效果取决于两者pH的差异。此外 ...
李毅 +6 more
doaj
Rare Metals, Volume 45, Issue 11, November 2026.ABSTRACT Hot deformation bonding (HDB) offers a promising approach to producing superalloy joints with base‐metal‐level strength, provided that interfacial microstructure is reconstructed through dynamic recrystallization (DRX). Current studies on DRX at bonding interfaces neglect actual phase‐contact configurations, obscuring interfacial DRX ...
Bingchao Xie +6 more
wiley +1 more source
, 1999 同陆生脊椎动物一样，在水环境中生活的鱼类也存在皮肤角质化衍生物。鱼类皮肤角质化衍生物可以由表皮单个细胞的角质化而形成，此类衍生物通常称之为单细胞角质突起（Ｕｎｉｃｅｌｕｌａｒｈｏｒｎｙｐｒｏｊｅｃｔｉｏｎｓｏｒｕｎｃｕｌｉ），它仅见于骨鳔类中底栖性鱼..
张鹗,沈建中
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浙江大学学报. 农业与生命科学版Receptacle browning issues arise during the storage and transportation of cut chrysanthemums, leading to a decline in both ornamental and commercial values.
胡雅鑫(HU Yaxin) +6 more
doaj +1 more source
Sexuality, Gender &Policy, Volume 9, Issue 4, November 2026.ABSTRACT This study explores how 2SLGBTQ+ youth in Alberta, Canada—the country's most Conservative province—mobilize queer joy as a form of resistance amid rising anti‐queer and anti‐trans policies under a settler colonial, cisheteropatriarchal regime. Drawing from youth‐produced collages, we demonstrate that this visual arts‐based participatory method
JJ Wright, Gillian Robinson
wiley +1 more source
, 2009 本发明公开了一种净化水质生物沉床的方法，它包括下列步骤：Ａ、沸石床的制作；Ｂ、沸石的处理；Ｃ、调节沸石床在水面下的深度；Ｄ、沉水植物的栽种；Ｅ、沸石床可固定或不固定；Ｆ、调节沸石床，以保持沉水植物的生长和水体的景观。本发明改善了受富营养化污染水体的质量，提高了水体的透明度，遏止了“藻华”的爆发，促进了水域中生物多样性的恢复，制作简单，成本低 ...
敖鸿毅, 付长营, 高镜清, 方涛
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World Food Policy, Volume 12, Issue 2, November 2026.ABSTRACT Agricultural development initiatives in sub‐Saharan Africa have emphasized improved crop varieties as a pathway to food security, resilience, and rural poverty reduction. However, empirical evidence often focuses narrowly on plot‐level outcomes and overlooks whole‐farm effects and the substantial heterogeneity in farmers' management practices,
Kodjo Kondo +4 more
wiley +1 more source