Results 1 to 10 of about 292,688 (150)

Faecalibacterium prausnitzii‐derived microbial anti‐inflammatory molecule regulates intestinal integrity in diabetes mellitus mice via modulating tight junction protein expression 普拉梭菌活性产物‐微生物抗炎分子通过调控细胞紧密连接蛋白表达修复糖尿病小鼠肠道屏障

open access: yesJournal of Diabetes, Volume 12, Issue 3, Page 224-236, March 2020., 2020
Highlights Diabetic conditions induce compositional dysbiosis of the gut microbiota and impair gut barrier integrity. Diabetic conditions markedly downregulate the abundance of Faecalibacterium prausnitzii in the gut. Under diabetic conditions, microbial anti‐inflammatory molecules from Faecalibacterium prausnitzii restore the gut barrier and ZO‐1 ...
Jihao Xu   +7 more
wiley   +1 more source

废水中硼的去除工艺试验与研究

open access: yesGongye shui chuli, 2021
以电厂镁法脱硫废水为例,提出针对工业废水硼污染物的几种处理方法,进行实际排水的处理工艺试验。结果表明,电絮凝法、活性炭吸附法、多羟基化合物络合沉淀法对硼的去除率不够理想,仅有50%左右;选择性离子交换树脂法和钙矾石结晶共沉淀法可将硼的质量浓度降至1 mg/L以下,但选择性离子交换法树脂再生频繁,结晶共沉淀法污泥量大;铁碳微电解法可实现处理出水硼<1 mg/L目标,且污泥量相对较少,具有较好的处理效果和经济性,在实际工程应用中有一定的参考价值。
乔明晨, 陈兴权, 乔春生
doaj  

二元共沉淀体系去除沼液有机物及机理分析

open access: yesShuitu Baochi Xuebao, 2020
针对猪场沼液有机质含量高,其他处理工艺周期长、成本高、难去除的问题。采用包含氧化钙水溶液和AlCl3的二元共沉淀体系去除沼液有机污染物。探究了沉淀剂配比、投加量、反应时间、沼液初始pH等因素对有机物去除效果的影响。结果表明:当共沉淀剂体积比为1:2.5、投加量为1:1(体积比)、反应时间60 min、pH为9时有机质最大去除率达到93%。通过对反应前后沉淀物XRD、FITR和SEM分析,表明共沉淀剂可与沼液中带负电有机质通过电荷吸引以及与正价金属离子的络合作用絮凝沉淀有机物 ...
杨爱爱   +4 more
doaj  

Preparation of superfine aluminum hydroxide in organic-water mixed solvent(有机-水两相体系制备超细氢氧化铝)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2009
以水为介质沉淀法制备超细氢氧化铝时,由于水的存在形成架桥羟基,干燥时会聚集形成硬团聚,为克服这种现象,提出以正丁醇为有机相,AlCl3 •6H2O为原料,氨水为沉淀剂的有机-水两相体系沉淀氢氧化铝的工艺,以烷氧基取代水的羟基形成软团聚,降低了粉体硬团聚.在此基础上,结合正丁醇共沸蒸馏和硅烷偶联剂进行表面改性的方法制备出超细氢氧化铝粉体.通过对制备过程中各种操作参数及影响因素的考察,获得了制备的最佳条件:氨水浓度以6.7 mol •L -1为宜,约6%的KH-550硅烷偶联剂,反应温度20~25 ...
PEINing(裴宁)   +3 more
doaj   +1 more source

Boosting Thermoelectric Performance of Cu3SbSe4‐Based Diamond‐Like Compounds via Multi‐Scale Microstructure Engineering

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Harnessing the potential of thermoelectric technology to convert waste heat into electricity, this study sought to enhance overall energy utilization efficiency and contribute to sustainable development through the advancement of environmentally friendly direct‐conversion materials.
Wenying Wang   +8 more
wiley   +1 more source

High‐Value Targeted Conversion of Copper Slag as LiFePO4 Material for Lithium‐Ion Batteries

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT The massive stockpiling of copper slag (CS) presents severe environmental and resource‐waste challenges. Existing strategies for CS valorization typically yield low‐value‐added products. Herein, we propose an innovative hierarchical regulation approach to transform CS into high‐performance LiFePO4 (LFP) cathode materials.
Yuyun Li   +5 more
wiley   +1 more source

Oxygen Vacancy Engineering of Ultrafine ZnAl2O4 Nanoparticles as a Robust Protective Layer for Dendrite‐Free and Long‐Lifespan Aqueous Zn Metal Anodes

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Aqueous zinc‐ion batteries (AZIBs) hold great promise for safe and sustainable energy storage, but their commercialization is impeded by severe Zn dendrite growth and interfacial instability. To address these challenges, we propose a defect engineering strategy employing ultrafine ZnAl2O4 (ZAO) nanoparticles (∼5 nm) with oxygen vacancy defects
Yilun Ren   +9 more
wiley   +1 more source

Dissolution‐Controlled Phase Separation of Cs+/Rb+ in High‐Salinity Brines via All‐Inorganic Prussian Blue Analogs

open access: yesRare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT The similar physicochemical properties of alkali metal elements make the co‐enrichment and precise separation of Cs+ and Rb+ in complex brine systems highly challenging. Here, an all‐inorganic strategy is proposed, which achieves efficient enrichment and precise separation of Cs+ and Rb+ in high‐salt systems by constructing Sr2+/Ba2+‐based ...
Kang Li, Ruixin Ma, Shina Li
wiley   +1 more source

改进共沉淀法制Cu基甲醇催化剂

open access: yes, 2004
采用传统共沉淀法和加表面活性剂改进共沉淀法制备了两种超细Cu/ZnO/Al2O3催化剂,并应用XRD,TEM对催化剂的结构和形貌进行了表征,同时用流动固定床微型反应器在3.0MPa和体积空速7600h^-1下考察了其催化合成气合成甲醇的活性.结果表明,改进共沉淀法制备的超细Cu/ZnO/Al2O3催化剂具有比传统共沉淀法制备的催化剂更细的粒径和更高的催化活性 ...
常杰, 阴秀丽, 付严, 汪俊锋
core   +1 more source

共沉淀法再利用氧化锌压敏电阻废旧片

open access: yesDianci bileiqi, 2001
提出以共沉淀法再利用 Zn O压敏电阻废旧片的工艺方法 ,讨论了溶解酸、沉淀剂和沉淀 p H值的选择 ,研究了温度对沉淀粒径的影响。结果表明 ,用共沉淀法粉料比常规法粉料制得的 Zn ...
陈培荣   +4 more
doaj  

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