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Journal of Integrative Agriculture 2016年第8期15卷 1798-1807页

作者： LIU Chun-guang YANG Xin LAI Yang LU Hong-gang zeng wei-min GENG Gui YANG Feng-shan Key Laboratory of Microbiology Life Science College Heilongjiang University Engineering Research Center of Agricultural Microbiology Technology Ministry of Education Sugar Beet Research Institute Chinese Academy of Agricultural Sciences Crop Research Institute Heilongjiang University

supported by the Public Welfare Industry Research Project, ministry of Agriculture of China （201203098）;the Harbin Applied Technology Research and Development Project, China （Youth Reserve Talents Class A： 2015RAQ... 详细信息

关键词： imazamox biodegradation Acinetobacter baumannii metabolites herbicide

Bioleaching of low-grade copper sulfide ore by extremely thermoacidophilic consortia at 70℃in column reactors

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Journal of Central South University 2020年第5期27卷 1404-1415页

作者： AI Chen-bing LIANG Yu-ting QIU Guan-zhou zeng wei-min School of Metallurgy and Environment Central South UniversityChangsha 410083China School of minerals Processing and Bioengineering Central South UniversityChangsha 410083China Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution Central South UniversityChangsha 410083China Key Laboratory of Biohydrometallurgy of ministry of Education Central South UniversityChangsha 410083China

The effects of introducing *** derivatives having different Cu^2+-resistance on bioleaching capacity of a defined consortium(consisting of *** DSM1651 and *** HO1-1)were studied in column reactors at 70℃.Introducing *** copA mutant,a copper sensitive derivative,only had negligible effects on *** introducing *** ARS50-2,a Cu^2+resistant strain,substantially consolidated bioleaching process,with 27.77%more copper recovered after 58 d of *** of *** ARS50-2 likely enhanced the sulfur oxidation capacity of consortium after the 24th day under the Cu^2+*** majority of extreme thermoacidophiles were attached on minerals surface as indicated by quantitative PCR(qPCR)*** of microbial community of extremely thermoacidophilic consortia that attached on surface of minerals were different from those in *** HO1-1 was the dominant species attached on minerals surface in each column reactor throughout bioleaching *** sessile *** ARS50-2 remained as a major species till the 34th *** DSM1651 was the most abundant planktonic species in leachate of each column *** results highlight that higher Cu^2+-resistance is a beneficial trait for extreme thermoacidophiles to process copper minerals.

关键词： extreme thermoacidophile bioleaching copper sulfide ore copper resistance microbial community

Brain region-specific roles of brain-derived neurotrophic factor in social stress-induced depressive-like behavior

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Neural Regeneration Research 2025年第1期20卷 159-173页

作者： Man Han Deyang zeng wei Tan Xingxing Chen Shuyuan Bai Qiong Wu Yushan Chen Zhen wei Yufei Mei Yan zeng Brain Science and Advanced Technology Institute Wuhan University of Science and TechnologyWuhanHubei ProvinceChina Geriatric Hospital Affiliated to Wuhan University of Science and Technology WuhanHubei ProvinceChina School of Public Health Wuhan University of Science and TechnologyWuhanHubei ProvinceChina

Brain-derived neurotrophic factor is a key factor in stress adaptation and avoidance of a social stress behavioral *** studies have shown that brain-derived neurotrophic factor expression in stressed mice is brain region–specific,particularly involving the corticolimbic system,including the ventral tegmental area,nucleus accumbens,prefrontal cortex,amygdala,and *** how brain-derived neurotrophic factor participates in stress processing in different brain regions will deepen our understanding of social stress *** this review,we discuss the expression and regulation of brain-derived neurotrophic factor in stress-sensitive brain regions closely related to the pathophysiology of *** focused on associated molecular pathways and neural circuits,with special attention to the brain-derived neurotrophic factor–tropomyosin receptor kinase B signaling pathway and the ventral tegmental area–nucleus accumbens dopamine *** determined that stress-induced alterations in brain-derived neurotrophic factor levels are likely related to the nature,severity,and duration of stress,especially in the above-mentioned brain regions of the corticolimbic ***,BDNF might be a biological indicator regulating stress-related processes in various brain regions.

关键词： amygdala chronic mild stress chronic social defeat stress corticolimbic system depression hippocampus medial prefrontal cortex nucleus accumbens social stress models ventral tegmental area

Influence diversity of extracellular DNA on bioleaching chalcopyrite and pyrite by Sulfobacillus thermosulfidooxidans ST

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Journal of Central South University 2020年第5期27卷 1466-1476页

作者： zeng wei-min CAI Yu-xin HOU Chun-wei LIU A-juan PENG Tang-jian CHEN Miao QIU Guan-zhou SHEN Li School of minerals Processing and Bioengineering Central South UniversityChangsha 410083China Key Laboratory of Biohydrometallurgy of ministry of Education Central South UniversityChangsha 410083China CSIRO mineral Resources ClaytonVictoriaAustralia

In this paper,Sulfobacillus thermosulfidooxidans ST was selected for use in bioleaching of pyrite and *** adsorption experiments revealed that more cells were adsorbed on the surface of pyrite than on the surface of *** role of extracellular DNA(eDNA)in the bioleaching process was investigated by depletion of eDNA using DNase *** number of cells attached on the chalcopyrite and pyrite surfaces decreased on a large scale,and the lag phase of cell growth increased,causing the leaching percentages of pyrite and chalcopyrite to decrease by approximately 11.6%and 20.5%,*** formation and distribution of eDNA secreted during bioleaching was assessed by a fluorescent dye-based method and visualized by confocal laser scanning microscopy(CLSM).The content of eDNA increased with bioleaching ***,ST showed a stronger capacity to produce eDNA on the surface of pyrite than on the surface of *** results showed that the removal of eDNA has a more significant effect on the bioleaching of chalcopyrite than on pyrite.

关键词： extracellular DNA Sulfobacillus thermosulfidooxidans ST chalcopyrite pyrite confocal laser scanning bioleaching

Biodissolution of pyrite and bornite by moderate thermophiles

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Journal of Central South University 2022年第11期29卷 3630-3644页

作者： WU Xue-ling LIAO Wan-qing PENG Tang-jian SHEN Li QIU Guan-zhou ERDENECHIMEG Dolgor zeng wei-min School of minerals Processing and Bioengineering Central South UniversityChangsha 410083China Key Laboratory of Biometallurgy of ministry of Education(Central South University) Changsha 410083China School of Engineering and Applied Sciences National University of MongoliaUlaanbaatarMongolia

Acid mine drainage(AMD)has become a widespread environmental issue and its toxicity can cause permanent damage to the ***,there are few studies focusing on the formation of AMD under moderately thermophilic conditions,hence we employed X-ray diffraction(XRD),scanning electron microscopy(SEM),X-ray photoelectron spectroscopy(XPS)and 16S rRNA sequencing to study the dissolution of pyrite and bornite by a moderate thermophilic consortium,and explored the role of free and attached microorganisms in the formation of *** consortium mainly comprised Acidithiobacillus caldus,Leptospirillum ferriphilum and Sulfobacillus *** results indicated that total iron in pyrite solution system reached 33.45 g/L on the 12th day,and the copper dissolution rate of bornite dissolution reached 91.8%on the 24th *** results indicated that the surfaces of pyrite and bornite were significantly corroded by *** and XPS results showed that ore residues contained jarosite,and the dissolving residue of bornite contained elemental *** dominant bacterial genus in pyrite dissolution was ***,and *** in bornite *** sum up,microbes significantly accelerated the mineral dissolution process and promoted the formation of AMD.

关键词： pyrite bornite dissolution moderate thermophiles 16S rRNA redundancy analysis

低温下YL15对黄铜矿和斑铜矿的协同浸出及电化学研究

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中国有色金属学报 2022年第1期32卷 271-278页

作者：彭玙萍彭堂见曾伟民中南大学资源加工与生物工程学院长沙410083 中南大学生物冶金教育部重点实验室长沙410083

采用生物浸出和电化学测试,研究低温10℃下AcidithiobacillusferrivoransYL15对黄铜矿和斑铜矿的协同浸出过程,结合不同的电化学测试手段探究其电化学溶解和表面钝化行为。结果表明:不同矿物体系的生物浸出和电化学行为存在极大差异。... 详细信息

采用生物浸出和电化学测试,研究低温10℃下AcidithiobacillusferrivoransYL15对黄铜矿和斑铜矿的协同浸出过程,结合不同的电化学测试手段探究其电化学溶解和表面钝化行为。结果表明:不同矿物体系的生物浸出和电化学行为存在极大差异。协同浸出组的浸出率最高,达到了48.4%,斑铜矿的次之,且两者都远高于黄铜矿的16.4%。斑铜矿的加入降低了氧化还原电位并维持到一个适宜的范围(400~420 mV),加快了矿物的氧化。另外,通过电化学测试,发现协同浸出组的电位降低、电流升高和阻抗减小、氧化速率大幅提高。

关键词：黄铜矿斑铜矿协同浸出低温电化学钝化

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在电力市场中引入电力需求弹性的研究

电网技术 2008年第11期32卷 84-89页

作者：聂江洪曾伟民武汉大学经济与管理学院湖北省武汉市430072 湖北电网电力交易中心湖北省武汉市430077

对发电侧实行竞价上网的市场模式进行了深入分析,提出了基于监视价格的差量合约,并在竞价市场中引入了电力需求弹性。通过调整竞争电量空间与合约电量空间抑制市场成员动用市场力,从而有效地降低购电成本,规避电价上扬的市场风险。最后... 详细信息

对发电侧实行竞价上网的市场模式进行了深入分析,提出了基于监视价格的差量合约,并在竞价市场中引入了电力需求弹性。通过调整竞争电量空间与合约电量空间抑制市场成员动用市场力,从而有效地降低购电成本,规避电价上扬的市场风险。最后对基于监视价格的差量合约进行了经济意义上的分析与讨论。

关键词：电力市场发电侧竞价需求弹性差量合约

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紫金山铜矿酸性矿山废水微生物群落多样性

微生物学通报 2020年第9期47卷 2887-2896页

作者：彭玙萍曾伟民中南大学资源加工与生物工程学院湖南长沙410083 生物冶金教育部重点实验室湖南长沙410083

【背景】为避免环境污染,酸性矿山废水需经处理后才能排放,处理后的废水理化性质会发生显著变化,将影响整个微生物群落的结构。【目的】分析处理前后的细菌和真菌群落变化及其与理化参数的关系,为矿山废水的处理提供参考指标,并为矿山... 详细信息

【背景】为避免环境污染,酸性矿山废水需经处理后才能排放,处理后的废水理化性质会发生显著变化,将影响整个微生物群落的结构。【目的】分析处理前后的细菌和真菌群落变化及其与理化参数的关系,为矿山废水的处理提供参考指标,并为矿山污染场地的修复提供理论基础。【方法】采集福建紫金山铜矿的酸性矿山废水并测定其理化性质。采用基于原核微生物16S rRNA基因V4区和真菌18S rRNA基因ITS的高通量测序技术分析水样的微生物群落结构。【结果】经中和处理后的回水与矿坑水和生物浸出液相比,pH升高,重金属离子含量显著降低。原核微生物的多样性高于真菌,回水的物种多样性高于矿坑水和浸出液。回水中变形菌门的丰度最高,矿坑水和浸出液中分别以广古菌门和硝化螺菌门的丰度最高。回水中噬氢菌属为优势类群,矿坑水和浸出液中的优势菌是钩端螺旋菌属,铁质菌属等古菌也有一定的比例。pH、Al、Mn、Zn与回水中相对丰度较高的菌属显著相关,而矿坑水和浸出液中的高丰度类群与环境因子没有显著的相关性。【结论】研究表明酸性废水的中和沉淀处理对微生物群落产生了较大的影响,微生物群落变化可以作为矿山酸性废水污染处理效果的一个参考指标。

关键词：酸性矿山废水理化参数原核微生物真菌群落结构

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碳纤维铁网催化法化学镀镍

表面技术 2017年第6期46卷 276-281页

作者：曾文清曾为民高中正马玉录华东理工大学机械与动力工程学院承压系统安全科学教育部重点实验室上海200237

目的采用铁网催化的方法在碳纤维表面化学镀镍,取代传统的钯活化法。方法经去胶、粗化、分散前处理工艺后,采用铁网包覆对碳纤维化学镀镍进行催化反应,通过称重法、扫描电镜(SEM)研究催化时间、碳纤维分散状况以及粗化时间对镀层的影响... 详细信息

目的采用铁网催化的方法在碳纤维表面化学镀镍,取代传统的钯活化法。方法经去胶、粗化、分散前处理工艺后,采用铁网包覆对碳纤维化学镀镍进行催化反应,通过称重法、扫描电镜(SEM)研究催化时间、碳纤维分散状况以及粗化时间对镀层的影响,并通过能谱(EDS)对铁网催化法和钯活化法制备的镀层进行成分分析。结果铁网催化在10 min内时镀层存在缺陷,催化20 min镀层以颗粒状泡沫镍存在,超声分散优于分散剂CMC的分散效果。获得铁网催化法最佳工艺为:丙酮浸泡4 h去胶,80℃粗化处理15 min,超声分散,铁网包覆催化20 min诱导起镀,化学镀20 min。制备的镀层均匀、致密,从镀层各组分含量分析,并不差于钯活化法制备的镍镀层。结论铁网催化法可以在碳纤维上获得质量良好的镍-磷镀层。

关键词：碳纤维化学镀镍铁网催化超声分散

Porous Organic Cage‑Based Quasi‑Solid‑State Electrolyte with Cavity‑Induced Anion‑Trapping Effect for Long‑Life Lithium Metal Batteries

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Nano-Micro Letters 2025年第2期17卷 376-386页

作者： wei-min Qin Zhongliang Li Wen‑Xia Su Jia‑min Hu Hanqin Zou Zhixuan Wu Zhiqin Ruan Yue‑Peng Cai Kang Li Qifeng Zheng School of Chemistry South China Normal UniversityGuangzhou 510006People’s Republic of China Key Laboratory of Functional Metal‑Organic Compounds of Hunan Province College of Chemistry and Material ScienceHengyang Normal UniversityHengyang 421008People’s Republic of China Guangzhou Key Laboratory of Energy Conversion and Energy Storage Materials Guangzhou 510006People’s Republic of China

Porous organic cages(POCs)with permanent porosity and excellent host–guest property hold great potentials in regulating ion transport behavior,yet their feasibility as solid-state electrolytes has never been testified in a practical ***,we design and fabricate a quasi-solid-state electrolyte(QSSE)based on a POC to enable the stable operation of Li-metal batteries(LMBs).Benefiting from the ordered channels and cavity-induced anion-trapping effect of POC,the resulting POC-based QSSE exhibits a high Li+transference number of 0.67 and a high ionic conductivity of 1.25×10^(−4) S cm^(−1) with a low activation energy of 0.17 *** allow for homogeneous Li deposition and highly reversible Li plating/stripping for over 2000 *** a proof of concept,the LMB assembled with POC-based QSSE demonstrates extremely stable cycling performance with 85%capacity retention after 1000 ***,our work demonstrates the practical applicability of POC as SSEs for LMBs and could be extended to other energy-storage systems,such as Na and K batteries.

关键词： Porous organic cage Cavity-induced anion-trapping Quasi-solid-state electrolyte Homogeneous Li+flux Lithium metal battery