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Millisecond-timescale electrodeposition of platinum atom-doped molybdenum oxide as an efficient electrocatalyst for hydrogen evolution reaction

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Frontiers of Materials Science 2022年第3期16卷 171-180页

作者： Yi XIAO Wenxue SHANG Jiyuan FENG Airu YU Lu CHEN liqiu ZHANG Hongxia SHEN Qiong cheng Lichun LIU Song BAI College of Chemistry and Life Sciences Zhejiang Normal UniversityJinhua 321000China College of Biological Chemical Sciences and Engineering&Nanotechnology Research InstituteJiaxing UniversityJiaxing 314000China College of Petroleum Engineering Liaoning Petrochemical UniversityFushun 113000China Collegeof Chemistry Jilin Normal UniversityChangchun 130103China

We present a straightforward method for one-pot electrodeposition of platinum atoms-doped molybdenum oxide(Pt·MoO_(3-x))films and show their superior electrocatalytic activity in the hydrogen evolution reaction(HER).A~15-nm-thick Pt·MoO_(3-x) film was prepared by one-pot electrodeposition at-0.8 V for 1 *** to considerably different solute concentrations,the content of Pt atoms in the electrode-posited composite electrocatalyst is *** Pt crystals or islands were observed on the flat Pt-MoO_(3-x) films,indicating that Pt atoms were homogeneously dispersed within the MoO_(3-x) thin *** catalytic performance and physicochemical features of Pt·MoO_(3-x) as a HER electrocatalyst were *** results showed that our Pt·MoO_(3-x) film exhibits 23-and 11-times higher current density than Pt and MoO_(3-x) electrodeposited individually under the same conditions,*** was found that the dramatic enhancement in the HER performance was principally due to the abundant oxygen *** use of the developed one-pot electrodeposition and doping method can potentially be extended to various catalytically active metal oxides or hydroxides for enhanced performance in various energy storage and conversion applications.

关键词： platinum molybdenum oxide electrodeposition hydrogen evolution reaction doping electrocatalyst

Heavy metals and community structure of microorganism changes during livestock manure composting with inoculation of effective microorganisms

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International Journal of Agricultural and Biological Engineering 2020年第6期13卷 125-132页

作者： Haibin Zhou Yujun Shen Ran Li Haibo Meng Xi Zhang Jian Wang Hongsheng cheng Shanshan Dong liqiu Song Jingtao Ding Qiongyi cheng Academy of Agricultural Planning&Engineering Ministry of Agriculture and Rural Affairs of the People's Republic of ChinaBeijing 100125China Key Laboratory of Technologies and Models for Cyclic Utilization from Agricultural Resources Ministry of Agriculture and Rural Affairs of the People's Republic of ChinaBeijing 100125China

Effective microorganisms(EM)is usually used in composting to improve the composting ***,the effect of EM on heavy metals evolution was still *** study was performed to illustrate the microbial community changes that occur during composting with the addition of EM and to determine the evolution of heavy metal speciation during this *** requirement of harmlessness for pig manure was met after the addition of EM at a dosage of 0.5%,with a germination index of 96.42%.The bacterial and fungal diversity were both found to decrease during the composting ***,the bioavailability of Cu and Pb decreased significantly during *** correlations were observed between the microbial composition and the percentage of different heavy metals fractions;however,the mechanism responsible for this correlation requires further *** study has the potential to contribute to control of heavy metal contamination during the process of recycling pig manure through the controlled addition of EM.

关键词： effective microorganisms heavy metal microbial communities pig manure composting

Metagenome analysis reveals potential microbial functions in topsoil of wheat-maize rotation system with five-year application of fertilizers

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International Journal of Agricultural and Biological Engineering 2019年第6期12卷 177-184页

作者： Yujun Shen Lixin Zhao Haibo Meng Hongsheng cheng Jingtao Ding Jiarui Wang Shanshan Dong Xi Zhang liqiu Song Shengwei Zheng Institute of Energy and Environmental Protection Chinese Academy of Agricultural EngineeringBeijing 100125China Key Laboratory of Technologies and Models for Cyclic Utilization from Agricultural Resources Ministry of AgricultureBeijing 100125China Key Laboratory of Energy Resource Utilization from Agriculture Residue Ministry of AgricultureBeijing 100125China

Fertilization mode affects soil quality and ecological *** effects of four fertilization regimens on lignocellulose content,readily degradable carbohydrate decomposition,and potential microbial functions in the topsoil of a wheat-maize rotation system between 2012 and 2017 were *** fertilization regimens of control(control NFNB),high chemical fertilizer(HCF),high biochar plus low chemical fertilizer(HBLCF),and biochar-based fertilizer(BBF)were compared on soil fundamental properties,microbial structure,and potential function in soil carbohydrate degradation based on metagenome *** diversity of carbohydrate-active enzyme genes in the topsoil microbial consortia in the four trials was primarily distributed within the ten ecologically most dominant *** of BBF was associated with the lowest decline in total nitrogen and P2O5(2012-2017:6.5%and 28.1%,respectively)and the most effective carbohydrate decomposition(2015-2017:67.0%for cellulose and 59.9%for readily degradable carbohydrate).Carbohydrate transport and metabolism accounted for 6.0%of reads assigned functional classification under the BBF *** findings reveal the ecologically functional diversity of topsoil microorganisms and suggest BBF application as a promising strategy for sustainable agriculture and beneficial to soil health.

关键词： biochar-based fertilizer carbohydrate decomposition genetic function microbial community topsoil

Investigation and analysis of the linkage mechanism and whole process cost of livestock manure organic fertilizer

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International Journal of Agricultural and Biological Engineering 2020年第2期13卷 223-227页

作者： Shanshan Dong Bin Sui Yujun Shen Haibo Meng Lixin Zhao Jingtao Ding Haibin Zhou Xi Zhang Hongsheng cheng Jian Wang Ran Li liqiu Song Pengxiang Xu Ji Li Institute of Energy and Environmental Protection Academy of Agricultural Planning and EngineeringMinistry of Agriculture and Rural AffairsBeijing 100125China Key Laboratory of Technologies and Models for Cyclic Utilization from Agricultural Resources Ministry of Agriculture and Rural AffairsBeijing 100125China Key Laboratory of Energy Resource Utilization from Agriculture Waste Ministry of Agriculture and Rural AffairsBeijing 100125China College of Resources and Environmental Sciences China Agricultural UniversityBeijing 100193China

In recent years,the utilization of manure resources for livestock and poultry farming has attracted a widespread attention,and manure resources utilization models suitable for different regional characteristics have formed *** them,the production of organic fertilizer from animal manure is a vital utilization ***,there are still some problems such as high production costs,difficult sales,and the unwillingness of farmers to use organic fertilizers which have affected the breeding cycle and the sustainability of manure treatment in livestock and poultry *** article selected 371 organic fertilizer plants,related farms and farmers in China,focusing on the main links of the entire process of livestock manure-organic fertilizer-farm application,and studied the mode of animal manure collection by organic fertilizer *** costs of organic fertilizer production and farmland application were ***,suggestions were made for the promotion and implementation of large-scale organic fertilizers to make good utilization of manure resources in livestock and poultry farming.

关键词： livestock manure organic fertilizer compost production cost application cost

融合集对分析和关联规则的变压器故障诊断方法

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中国电机工程学报 2015年第2期35卷 277-286页

作者：谢龙君李黎程勇卢明姜立秋腾云强电磁工程与新技术国家重点实验室(华中科技大学) 湖北省武汉市430074 国网河南省电力公司电力科学研究院河南省郑州市450052

结合集对分析和关联规则各自的特点,提出了一种电力变压器故障诊断的新方法。该方法通过分析变压器运行中各故障征兆参数之间的关联性,建立了故障类型集合;通过对比计算关联规则的支持度与置信度,同时引入变权公式,得到故障类型和故障... 详细信息

结合集对分析和关联规则各自的特点,提出了一种电力变压器故障诊断的新方法。该方法通过分析变压器运行中各故障征兆参数之间的关联性,建立了故障类型集合;通过对比计算关联规则的支持度与置信度,同时引入变权公式,得到故障类型和故障征兆的权重系数,有效避免专家意见或经验的主观性的问题;根据集对分析的可扩展性,采用5元联系度提高变压器故障诊断中处理不确定性因素的精度。实例对比分析表明,与关联规则、集对分析方法相比,该方法具有较好的诊断效果,在多故障问题处理中也表现优异。

关键词：电力变压器故障诊断集对分析关联规则

毒品原植物药用研究的“负责任创新”基本策略

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医学与哲学 2023年第21期44卷 17-22页

作者：程鹏吴霞李秋实清华大学社会科学学院北京100084 清华大学中科院学部/清华大学科学与社会协同发展研究中心北京100084 辽宁中医药大学马克思主义学院辽宁沈阳110847 中国中医科学院中药研究所北京100700

毒品原植物具有药品和毒品双重属性,这种特殊性使其在科研创新活动中面临诸多伦理困境。立足解决国内毒品原植物医药研究面临的困境,参照负责任创新四维理论模型提出五个负责任行为框架,即政府主导为主、大众监督为辅,提倡多主体共同责... 详细信息

毒品原植物具有药品和毒品双重属性,这种特殊性使其在科研创新活动中面临诸多伦理困境。立足解决国内毒品原植物医药研究面临的困境,参照负责任创新四维理论模型提出五个负责任行为框架,即政府主导为主、大众监督为辅,提倡多主体共同责任、资质认证与审查制度、全过程嵌入式伦理反思、建立负责任创新价值观和预后问责制,在提升创新动力方面提出部分性开放科学推进成果共享、创新监管机制以降低科研机构的风险。以中医药科研实践为基础,引入科学技术哲学思辨,为中医药毒品原植物科研创新规避风险,为提升创新动力提供有益思路。

关键词：中医药毒品原植物负责任创新药物研究

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EGSB反应器处理发酵废水效能影响研究

环境科学与技术 2015年第9期38卷 141-146,161页

作者：高靖伟程翔封莉张立秋北京林业大学环境科学与工程学院北京市水体污染源控制技术重点实验室北京100083

实验采用厌氧膨胀颗粒污泥床(EGSB)反应器先后对模拟发酵废水和实际发酵废水进行处理。考察了配水阶段硫酸盐负荷(SLR)对EGSB反应器净化效能的影响,并对实际发酵废水的处理效果进行了研究。实验结果表明:控温条件下((35±1)℃)、进水CO... 详细信息

实验采用厌氧膨胀颗粒污泥床(EGSB)反应器先后对模拟发酵废水和实际发酵废水进行处理。考察了配水阶段硫酸盐负荷(SLR)对EGSB反应器净化效能的影响,并对实际发酵废水的处理效果进行了研究。实验结果表明:控温条件下((35±1)℃)、进水COD约为2 200 mg/L、水力停留时间(HRT)15 h时,COD去除率可达92%。随着SLR增加,COD去除率降低,当SLR为1.3 kg SO42-/(m3·d)时,反应器出现酸化。为保证反应器的稳定运行,延长HRT至24 h后,COD、SO42-去除率可分别达到90%、82%左右。同样条件下,EGSB处理实际发酵废水,COD、SO42-去除率分别为75%、60%。配水和原水阶段硫酸盐还原菌所能达到的最高电子流比重分别为21.1%、17.5%,对应的最低COD/SO42-为3.0,此时整个反应系统竞争最为激烈,但产甲烷菌仍保持较高竞争性。

关键词：发酵废水膨胀颗粒污泥床硫酸盐负荷电子流

活性炭催化臭氧氧化深度处理工艺对酵母发酵废水中有机物的去除特性分析

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环境工程学报 2017年第11期11卷 5820-5827页

作者：汪毅赵冬霞封莉程翔张立秋北京林业大学环境科学与工程学院北京市水体污染源控制技术重点实验室北京100083

酵母发酵废水经过厌氧膨胀颗粒污泥床(EGSB)-好氧膜生物反应器(MBR)组合工艺处理后,仍含有较高浓度的COD,不能满足排放要求。以发酵废水处理过程中MBR处理单元的出水为研究对象,选择活性炭催化臭氧氧化作为其深度处理工艺,以活性炭吸附... 详细信息

酵母发酵废水经过厌氧膨胀颗粒污泥床(EGSB)-好氧膜生物反应器(MBR)组合工艺处理后,仍含有较高浓度的COD,不能满足排放要求。以发酵废水处理过程中MBR处理单元的出水为研究对象,选择活性炭催化臭氧氧化作为其深度处理工艺,以活性炭吸附和单独臭氧氧化工艺作为对比,重点考察了活性炭催化臭氧氧化深度处理工艺对发酵废水中有机物的去除效能,并借助红外光谱、三维荧光光谱和气相色谱-质谱联用等方法,详细分析了发酵废水深度处理过程中有机物的变化规律。研究结果表明,活性炭催化臭氧氧化深度处理工艺对发酵废水中的芳香族化合物、具有共轭双键的有机物及色度具有良好的去除效果;并且对废水中酸类、醇类和醛类等有机物有较好的降解、转化和去除效果。此外,活性炭催化臭氧氧化工艺还可以使以烷烃、卤代烃、醇类、酯类和酮类为主的大分子有机物的含量大幅度减少。

关键词：发酵废水活性炭催化臭氧氧化深度处理有机物

磁敏感加权成像在兔肝脏纤维化模型分期中的诊断价值

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中华医学杂志 2016年第17期96卷 1371-1376页

作者：江锦赵邓灵波阮继银成先义邹立秋香港大学深圳医院放射科 518053 北京大学深圳医院放射科深圳第六人民医院南山医院放射科

目的评价磁敏感加权成像（SWI）在家兔肝纤维化（HF）分期中的价值。方法60只实验兔按随机区组法分为3组：HF组（n=32）、对照组（n=16）、补充组（n=12）。HF组和补充组兔经皮下注射50％CCl4橄榄油溶液建立兔肝纤维化模型。注射后的第4... 详细信息

目的评价磁敏感加权成像（SWI）在家兔肝纤维化（HF）分期中的价值。方法60只实验兔按随机区组法分为3组：HF组（n=32）、对照组（n=16）、补充组（n=12）。HF组和补充组兔经皮下注射50％CCl4橄榄油溶液建立兔肝纤维化模型。注射后的第4、5、6、1、0周分别随机选HF组兔8只、对照组兔4只进行肝脏MRI轴位T1、WI、T2WI序列扫描及SWI扫描，扫描后处死并取兔肝组织进行Scheuer病理分期。在SWI图像上测量肝脏信号强度（SI肝）和同层背部肌肉的信号强度（SI肌），并计算二者信号强度比值（sIR肝／肌）。采用Spearman相关性检验分析SI肝、SIR肝／肌与组织病理分期之间的相关性。采用受试者工作特征（ROC）曲线分析SWI肝纤维化分期的诊断效能。结果共48只兔顺利完成磁共振扫描，病理分期FD组15只（16只对照组其中1只出现肝纤维化），其sIRMⅡ和sI#分别为0．9744-0．018、374士44；F1、2组、F3、4组各8只，其sIR旰／月n分别为0．963±0．018、0．796±0．023、0．786±0．025、0．5124-0．024，SI肝分别为372±18、3764-22、346±15、288±19。随着肝纤维化的进展，SIR忤／m值逐渐降低，sIR旰／目n与HF病理分期之间存在明显负相关性（r=-0．896，P〈0．05）。F3和F4期，SI肝值明显下降，差异有统计学意义（P〈0．05）。但FU与F1期，砣与F3期之间sIR旰／m值差异均无统计学意义（均P〉0．05）。ROC曲线分析显示sIⅡ值能鉴别F3期及以上的肝纤维化，而SIR肝／肌对各期肝纤维化有较高的诊断效能。结论SWI中sIR旰／n能定量反映肝纤维化的进展程度，为临床制定肝纤维化的治疗方案、疾病纵向观察提供一种客观、定量的影像学依据。

关键词：磁共振成像肝硬化肿瘤分期磁敏感加权成像