Results 1 to 10 of about 4,095 (89)

Understanding Traditional Chinese Medicine to strengthen conservation outcomes

open access: yesPeople and Nature, Volume 3, Issue 1, Page 115-128, February 2021., 2021
Abstract Numerous treatments in Traditional Chinese Medicine (TCM) involve the use of wildlife products, including some that utilize ingredients derived from endangered flora and fauna. Demand for such endangered wildlife products in TCM can threaten the survival of species and pose serious challenges for conservation.
Hubert Cheung   +8 more
wiley   +1 more source

东祁连山高寒草甸土壤“固-液-气”三相组成对海拔和坡向的响应

open access: yesShuitu Baochi Xuebao, 2022
为探究不同海拔和坡向下高寒草甸土壤"固—液—气"三相组成变化特征,以东祁连山高寒草甸为研究对象,分析了不同海拔(2 800,3 000,3 200,3 400,3 600,3 800,4 000 m)、坡向(阳坡、阴坡)高寒草甸的植被特征和土壤物理特征,结合植被指标拟合探讨高寒草甸"固—液—气"三相的最佳组成比例。结果表明:植被盖度、草层高度和地上生物量均随海拔升高呈先升高后降低,在海拔3 200 m处达最大值,同一海拔的阴坡植被盖度、草层高度、地上生物量均高于阳坡 ...
李强   +9 more
doaj  

印染废水膜浓缩液微电解处理工艺研究

open access: yesGongye shui chuli, 2020
采用微电解工艺处理印染废水生化出水膜浓缩液,考察了微电解填料、pH、固液体积比、曝气量和反应时间对COD去除率的影响。结果表明,采用自制的T-20多元微电解填料,当进水pH为4.0,固液体积比为1:6,曝气量为1.2 L/min,反应时间为60 min时,COD去除率可达80.38%。T-20微电解填料具有多元微电解体系结构,内部孔隙发达,相比于二元微电解填料,能加速微电解反应电子传递速度,促进膜浓缩液中有机物的降解。
周伟   +5 more
doaj   +2 more sources

污泥热解系统固-液-气三相反应路径及调控策略

open access: yesGongye shui chuli
污泥热解因快速高效回收生物炭、生物油与高值气体引起了广泛关注。尽管三相产物被用于环境修复与资源能源再生多种场景,但仍面临热解参数精准控制难、有机组分反应路径复杂、固液气产率低等瓶颈问题,导致规模化工程应用严重受阻。大量研究致力于解决上述问题,从固液气产物生成路径到影响因素识别,再到开发新耦合工艺、预测模型与机器学习,最终目的是全面了解固-液-气产物如何产生与优化控制,实现此目标的最佳途径是将已知信息统筹联系,从而制定提高孔结构丰富生物炭、轻质生物油与短链气态产物产率的科学方案。为此 ...
陈清   +5 more
doaj   +4 more sources

固液分离对污泥两相厌氧消化性能的影响

open access: yesGongye shui chuli, 2018
利用中温(35±1)℃两相厌氧消化工艺处理剩余污泥,产甲烷相采用改进的厌氧序批式反应器(ASBR),研究了产甲烷相中固液分离对污泥厌氧消化过程的影响。ASBR运行分为启动阶段、固液分离Ⅰ阶段和固液分离Ⅱ阶段。结果表明:ASBR清水区出水SS维持在400~600 mg/L,实现了固液分离;3个阶段的系统VS去除率分别为38.98%、44.02%和47.92%,单位VS产CH4率分别为162、179、192 mL/g。产甲烷相的固液分离提高了污泥厌氧系统的VS降解率和产气性能。
刘佳伟   +4 more
doaj   +2 more sources

MoS2‐Modified Bamboo‐Like Nitrogen‐Doped Carbon Nanotubes Encapsulating Ni Nanoparticles Enabling Synergistic Adsorption–Catalysis for High‐Performance Lithium–Sulfur Batteries

open access: yesRare Metals, Volume 45, Issue 8, August 2026.
ABSTRACT The commercialization of lithium–sulfur batteries (Li–S batteries) has been hindered by the shuttle effect of lithium polysulfides (LiPSs) and sluggish redox kinetics. In this study, we constructed a three‐dimensional hollow conductive network host material for sulfur with synergistic enhancement effects.
Jie Yang   +6 more
wiley   +1 more source

Hollow Porous Nitrogen‐Doped Carbon‐Confined FeP/Fe2P Nanoparticle‐Armored Catalyst for Efficient Oxygen Reduction Reaction in Aqueous/Flexible Zinc‐Air Batteries

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
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

Laser‐guided thin‐film self‐rolling for asymmetric small‐scale swimmers

open access: yesRare Metals, Volume 44, Issue 8, Page 5607-5620, August 2025.
Graphical abstract AbstractSmall‐scale robots are promising miniaturized devices in biomedicine. Thin‐film self‐assembly is a commonly used strategy to fabricate tubular small‐scale robots. However, the existing methods have limitations like complex manufacturing processes and limited control of self‐assembly behavior.
Yi Chen   +11 more
wiley   +1 more source

曝气微电解混凝沉淀处理含砷铬废水

open access: yesGongye shui chuli, 2018
采用曝气微电解混凝沉淀处理含砷、铬废水,考察了反应初始pH、铁炭比、固液比和曝气时间等反应条件对废水中砷、铬去除效果的影响。试验结果表明:在废水初始pH=2.5,铁炭质量比为1:1,固液比为1:20,曝气时间为3 h的条件下,该工艺对砷和铬的去除效果最佳,砷和铬的去除率均达99.7%,其他重金属离子的去除率均达到97%,COD去除率达68.1%。
于艳杰   +4 more
doaj   +2 more sources

胆甾液晶冠醚固定相的气相色谱性能研究

open access: yes四川大学学报. 自然科学版, 1997
4′-胆甾烯氧羰基苯并-15-冠-5(CH-B-15-C-5)在不同温度范围内其相态不同,在同一温度范围内因处理方式不同而物性亦相去甚远,用其作成了兼具气固色谱(GSC)、普通气液色谱(GLC)和冠醚液晶气液色谱(CL-GLC)多种性能的固定相.用该固定相在不同条件下,对脂肪烃、脂肪醇、羧酸乙酯以及多种有机混合物等进行了GSC,GLC和CL-GLC分离,发现它对这些物质有较强的分离能力,均获得对称性良好的色谱峰.还研究了该固定相的极性、选择性和稳定性等色谱性能 ...
卿笑天   +4 more
doaj  

Home - About - Disclaimer - Privacy