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Molybdenum disulfide(MoS2)-based electrocatalysts for hydrogen evolution reaction:From mechanism to manipulation

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Journal of Energy Chemistry 2022年第11期31卷 45-71,I0003页

作者： Yao xu Riyue Ge Jack Yang Jiancheng Li sean Li Ying Li Jiujun Zhang Jing Feng Bin Liu Wenxian Li Institute of Materials School of Materials Science and EngineeringShanghai UniversityShanghai 200444China School of Materials Science and Engineering University of New South WalesSydney NSw 2052Australia Materials and Manufacturing Futures Institute University of NewSouthWalesSydney NSW2052Australia School of Materials Science and Engineering Shanghai UniversityShanghai 200444China InstituteforSustainable Energy Shanghai UniversityShanghai 200444China Collge of Materials Science and Engineering Fuzhou UniversityFuzhou 350108FujianChina Faculty of Materials Science and Engineering Kunming University of Science and TechnologyKunming 650093YunnanChina

Molybdenum disulfide(MoS_(2))-based materials as the non-noble metal catalysts have displayed the potential capability to drive electrocatalytic hydrogen evolution reaction(HER)for green hydrogen production along with their intrinsic activity,tunable electronic properties,low cost,and abundance reserves,which have attracted intensive attention as alternatives to the low-abundance and high-cost platinum-based ***,their insufficient catalytic HER activities and stability are the major challenges for them to become practically ***,the MoS_(2)-based electrocatalysts for HER are comprehensively reviewed to explain the fundamental science behind the manipulations of the crystal structure,microstructure,surface,and interface of MoS_(2) in order to enhance its catalytic performance through changing the electrical conductivity,the number of active sites,surface wettability,and the Gibbs free energy for hydrogen adsorption(ΔGH).Recent studies in surface/interface engineering,such as phase engineering,defect engineering,morphology design,and heterostructure construction,are analyzed to reveal the state-of-the-art strategies for designing and preparing the cost-effective and highperformance MoS_(2)-based catalysts through optimizing the charge transfer,surface-active sites,ΔGH,and surface ***,the perspectives,challenges,and future research directions of HER electrocatalysis are also given to facilitate the further research and development of HER catalysts.

关键词： Surface/interface engineering Hydrogen evolution reaction Molybdenum disulfide Mechanisms

Carbon-based bifunctional electrocatalysts for oxygen reduction and oxygen evolution reactions:Optimization strategies and mechanistic analysis

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Journal of Energy Chemistry 2022年第8期31卷 234-265,I0008页

作者： Huidong xu Jack Yang Riyue Ge Jiujun Zhang Ying Li Mingyuan Zhu Liming Dai sean Li Wenxian Li Institute of Materials Shanghai University School of Materials Science and Engineering UNSW Materials and Manufacturing Futures InstituteUniversity of New South Wales Institute for Sustainable Energy Shanghai University School of Chemical Engineering University of New South Wales Shanghai Key Laboratory of High Temperature Superconductors

Electrocatalysts are one of the essential components for the devices of high-efficiency green energy storage and conversion,such as metal-air cells,fuel cells,and water electrolysis *** catalysts made from noble metals possess high catalytic performance in both oxygen reduction reaction(ORR)and oxygen evolution reaction(OER),their scarcity and expensiveness significantly limit large-scale *** this regard,metal-free/non-noble metal carbon-based catalysts have become competitive alternatives to replace catalysts made of noble ***,low catalytic ORR/OER performance is the challenge of carbon-based catalysts for the commercial applications of metal-air *** solve the problem of poor catalytic performance,two strategies have been proposed:(1)controlling the microstructure of the catalysts to expose more active sites as the channels of rapid mass and electron transfer;and(2)reducing the reaction energy barrier by optimizing the electronic structures of the catalysts via surface ***,we review different types of bifunctional ORR/OER electrocatalysts with the activated surface *** focus on how the challenge can be overcome with different methods of material synthesis,structural and surface characterization,performance validation/optimization,to outline the principles of surface modifications behind catalyst *** particular,we provide critical analysis in the challenges that we are facing in structural design and surface engineering of bifunctional ORR/OER catalysts and indicate the possible solution for these problems,providing the society with clearer ideas on the practical prospects of noble-metal-free electrocatalysts for their future applications.

关键词： Electrocatalyst Bifunctionality Oxygen reduction Oxygen evolution Carbons transition metals Surface engineering Microstructure

The Effect of Partially Substituted Lupin, Soybean, and Navy Bean Flours on Wheat Bread Quality

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Food and Nutrition Sciences 2018年第7期9卷 840-854页

作者： sean Liu Diejun Chen Jingyuan xu National Center for Agricultural Utilization Research Agricultural Research Service US Department of Agriculture Peoria IL USA

Many edible legumes contain high amounts of proteins, fibers, minerals and vitamins. Their essential amino acid composition and concentration complements the amino acids in wheat and other cereals. In addition, breads fortified with protein rich legumes make the breads more palatable. In this study, we evaluated breads made from wheat flour partially substituted with soybean, navy bean, and lupin flours at 10%, 20%, and 30% levels. The physicochemical properties of breads were measured and compared with the control (made from 100% wheat flour). Statistical analysis was used to assess the significance of the differences. The breads fortified with soybean, lupin and navy bean flours showed remarkable springiness, similar to the breads made from wheat flour. However, the higher amount of substitution increased the firmness of the breads, probably due to the incorporation of additional fibers and proteins into the formulations. Compared to wheat bread, the volumes of 90:10 wheat-soybean, wheat-lupin, and wheat-navy bean breads decreased about 7%, 2%, and 10%, respectively. Higher substitution levels would result in a higher reduction in volume for all legumes tested. The volume reduction as a result of legume substitution appears to be navy bean flour > soybean flour > lupin flour. The inclusion of legumes in the bread formulations imparts a slightly darker crust color and crumb color with the exception of breads with the soybean flour substitution. Lupin appears to be the best substitution candidate among the legumes tested for fortified bread making. Lupin can be presented as a high-value protein source in developing marketable foods for health conscious consumers.

关键词： Bread Quality Lupin Navy Bean Rheology Soybean Wheat

Gas-propelled nanomotors alleviate colitis through the regulation of intestinal immunoenvironment-hematopexis-microbiota circuits

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Acta Pharmaceutica Sinica B 2024年第6期14卷 2732-2747页

作者： Bo Xiao Yuqi Liang Ga Liu Lingshuang Wang Zhan Zhang Libin Qiu Haiting xu sean Carr Xiaoxiao Shi Rui LReis Subhas CKundu Zhenghua Zhu Department of Gastroenterology the First Affiliated Hospital of Nanchang UniversityNanchang 330006China College of Sericulture Textileand Biomass SciencesSouthwest UniversityChongqing 400715China Department of Neurology School of MedicineEmory UniversityAtlantaGA 30322USA Atlanta Veterans Affairs Medical Center DecaturGA 30033USA Department of Surgery School of MedicineEmory UniversityAtlantaGA 30322USA Bs Research Group I3Bs—Research Institute on BiomaterialsBiodegradables and BiomimeticsUniversity of MinhoHeadquarters of the European Institute of Excellence on Tissue Engineering and Regenerative MedicineAveParkBarcoGuimaraes 4805-017Portugal

The progression of ulcerative colitis(UC)is associated with immunologic derangement,intestinal hemorrhage,and microbiota *** traditional medications mainly focus on mitigating inflammation,it remains challenging to address multiple ***,a versatile gas-propelled nanomotor was constructed by mild fusion of post-ultrasonic CaO_(2) nanospheres with Cu_(2)O *** resulting CaO_(2)–Cu_(2)O possessed a desirable diameter(291.3 nm)and a uniform size *** could be efficiently internalized by colonic epithelial cells and macrophages,scavenge intracellular reactive oxygen/nitrogen species,and alleviate immune reactions by pro-polarizing macrophages to the anti-inflammatory M2 *** nanomotor was found to penetrate through the mucus barrier and accumulate in the colitis mucosa due to the driving force of the generated oxygen *** administration of CaO_(2)–Cu_(2)O could stanch the bleeding,repair the disrupted colonic epithelial layer,and reduce the inflammatory responses through its interaction with the genes relevant to blood coagulation,anti-oxidation,wound healing,and ***,it restored intestinal microbiota balance by elevating the proportions of beneficial bacteria(e.g.,Odoribacter and Bifidobacterium)and decreasing the abundances of harmful bacteria(e.g.,Prevotellaceae and Helicobacter).Our gas-driven CaO_(2)–Cu_(2)O offers a promising therapeutic platform for robust treatment of UC via the rectal route.

关键词： Nanomotor Anti-inflammation Blood coagulation Immune regulation Hematopexis Microbiota rebalance Ulcerative colitis Rectal administration

Patterns and ecological determinants of woody plant height in eastern Eurasia and its relation to primary productivity

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Journal of Plant Ecology 2019年第5期12卷 791-803页

作者： Zhiheng Wang Yaoqi Li Xiangyan Su Shengli Tao Xiao Feng Qinggang Wang Xiaoting xu Yunpeng Liu sean T.Michaletz Nawal Shrestha Markku Larjavaara Brian J.Enquist Institute of Ecology and Key Laboratory for Earth Surface Processes of the Ministry of Education College of Urban and Environmental SciencesPeking UniversityBeijing 100871China Department of Ecology and Evolutionary Biology University of ArizonaTucsonAZ 85721USA LaboratoireÉvolution et DiversitéBiologique(EDB)UMR 5174 31062Toulouse Cedex 9France Institute of the Environment University of ArizonaTucsonAZ 85721USA Department of Ecology College of Resources and Environmental SciencesChina Agricultural UniversityBeijing 100193China Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education College of Life SciencesSichuan UniversityChengdu 610065SichuanChina Biosphere 2 University of ArizonaTucsonAZ 85721USA Department of Botany and Biodiversity Research Centre University of British ColumbiaVancouverBC V6T 1Z4Canada The Santa Fe Institute Santa FeNM 87501USA

Aims Plant height is a key functional trait related to aboveground bio-mass,leaf photosynthesis and plant ***,large-scale geographical patterns in community-average plant height(cAPH)of woody species and drivers of these patterns across different life forms remain hotly ***,whether cAPH could be used as a predictor of ecosystem primary productivity is *** We compiled mature height and distributions of 11422 woody spe-cies in eastern Eurasia,and estimated geographic patterns in cAPH for different taxonomic groups and life *** we evaluated the effects of environmental(including current climate and historical climate change since the Last Glacial Maximum(LGM))and evolutionary factors on ***,we compared the predictive power of cAPH on primary productivity with that of LiDAR-derived canopy-height data from a global *** Findings Geographic patterns of cAPH and their drivers differed among taxonomic groups and life *** strongest predictor for cAPH of all woody species combined,angiosperms,all dicots and deciduous dicots was actual evapotranspiration,while temperature was the strongest pre-dictor for cAPH of monocots and tree,shrub and evergreen dicots,and water availability for *** climate change since the LGM had only weak effects on *** phylogenetic signal was detected in family-wise average height,which was also unrelated to the tested environmental ***,we found a strong correlation between cAPH and ecosystem primary *** productivity showed a weaker relationship with cAPH of the tallest species within a grid cell and no relationship with LiDAR-derived canopy height reported in the global *** findings suggest that current climate rather than historical climate change and evolutionary history determine the geographical patterns in ***,the relative effects of climatic factors representing environmental energy and water availability on s

关键词： annual evapotranspiration ecosystem primary productivity environmental factors historical climate change phylogenetic signals community-average plant height woody plants

Development of a Series Hybrid Electric Aircraft Pushback Vehicle: A Case Study

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Engineering（科研） 2019年第1期11卷 33-47页

作者： Scott Cash Quan Zhou Oluremi Olatunbosun Hongming xu sean Davis Robin Shaw Department of Mechanical Engineering University of Birmingham Birmingham UK Textron Cheltenham UK Hyperdrive Innovation Ltd. Sunderland UK

The work presented in this paper is a progression to previous research which developed an overcurrent-tolerant prediction model. This paper presents some of the modelling and development techniques used for the previous research, but more emphasis is placed on the requirements of the case study;whereby an aeroplane pushback tug is converted into a series Hybrid Electric Vehicle (HEV). An iterative design process enabled the traction motor, transmission, generator and battery pack parameters to be tailored for this vehicle’s unique duty cycle. A MATLAB/Simulink model was developed to simulate the existing internal combustion engine powertrain as well as the series HEV equivalent for comparative analysis and validation purposes. The HEV design was validated by comparing the simulation results to recorded real-world data collected from the existing vehicle (torque, speeds etc.). The HEV simulations provided greater fuel savings and reduced emissions over the daily duty cycle in comparison to the existing vehicle.

关键词： Hybrid Electric Vehicle HEV Design Development Traction Motor

粘土矿物参与微生物利用木质素形成矿物-菌体残留物的结构特征研究

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光谱学与光谱分析 2018年第9期38卷 2903-2909页

作者：王帅徐俊平陈殿元姜帅李兴吉盛炳翰 Schaeffer sean 吉林农业科技学院农学院吉林吉林132101 Institute of Agricalture The University of Tennessee

粘土矿物在催化木质素形成腐殖质方面具有重要贡献。为有效阐明微生物-木质素-粘土矿物三者间的关系,探明矿物-菌体残留物的结构特征,采用液体摇瓶培养法,以木质素为碳源,通过添加高岭石和蒙脱石,在接种复合菌剂后启动110d液体培养,期... 详细信息

粘土矿物在催化木质素形成腐殖质方面具有重要贡献。为有效阐明微生物-木质素-粘土矿物三者间的关系,探明矿物-菌体残留物的结构特征,采用液体摇瓶培养法,以木质素为碳源,通过添加高岭石和蒙脱石,在接种复合菌剂后启动110d液体培养,期间动态收集矿物-菌体残留物,利用傅里叶红外光谱及扫描电子显微镜技术对其结构特性进行了研究。结果表明:高岭石颗粒边缘多由管状体卷曲而成,在参与微生物利用木质素形成矿物-菌体残留物后,连片状细小颗粒结构进一步团聚,结合更加紧凑,短管状结构增多,但整体仍保持多水高岭石的结构特征;在初始富营养条件下,高岭石能够促进微生物繁衍,使大量菌体聚集于高岭石表面,掩蔽了Si—O和Si—O—Al键,且矿物-菌体残留物中脂族碳结构比例增加;菌体中多糖物质通过含氧官能团与高岭石表面的水化层在多个部位形成氢键,氢键的形成对于高岭石稳定木质素及其降解产物具有重要作用,芳香碳结构比例和多糖类物质含量随培养时间逐渐增加,而后复合菌株对掩蔽在矿物表面的菌体进行二次利用,使高岭石Si—O—Al键重现;蒙脱石多由浑圆的颗粒结构组成,接种微生物可使其表面产生溶蚀,团粒结构遭到破碎;与10d相比,历经30d培养所得矿物-菌体残留物中的多糖类物质增多,使原本归属蒙脱石Si—O—Si及Si—O结构的1 034~1 038cm-1处吸收峰强度增加,而后因多糖类物质与蒙脱石表面羟基发生缔合,又使该处吸收峰强度减弱,同时发生了氢键键合,该作用是蒙脱石-微生物-木质素间相互作用、形成矿物-菌体残留物的主要机制;高岭石在稳定有机碳方面的能力要高于蒙脱石,更易促进HS前体物质的形成。

关键词：傅里叶红外光谱扫描电子显微镜粘土矿物木质素矿物-菌体残留物

Mediator complex subunit 12 is a gatekeeper of SARS-CoV-2 infection in breast cancer cells

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Genes & Diseases 2022年第1期9卷 5-8页

作者： Shengjie Zhang Fabao Liu Peter Halfmann Ryan TBehrens Peng Liu sean JMcilwain Irene MOng Kristine Donahue Yidan Wang Yoshihiro Kawaoka Nathan Sherer Wei xua McArdle Laboratory for Cancer Research University of Wisconsin-MadisonMadisonWI 53706USA Department of Pathobiological Sciences School of Veterinary MedicineUniversity of WisconsinMadisonWI 53706USA Department of Biostatistics and Medical Informatics School of Medicine and Public HealthUniversity of WisconsinMadisonWI 53706USA Department of Biostatistics and Medical Informatics Carbone Cancer CenterUniversity of WisconsinMadisonWI 53706USA Department of Obstetrics and Gynecology School of Medicine and Public HealthUniversity of WisconsinMadisonWI 53706USA Cancer Hospital of the University of Chinese Academy of Sciences(Zhejiang Cancer Hospital) Institute of Basic Medicine and Cancer(IBMC)Chinese Academy of SciencesHangzhouZhejiang 310022China

Cancer patients are at increased risk for severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)infection and *** other viruses in the SARS family,SARS-CoV-2 employs two host proteins,angiotensin-converting enzyme 2(ACE2)and transmembrane serine protease 2(TMPRSS2),for viral entry.1 Recent studies showed that many of the host proteins identified as potential targets for developing COVID therapies are dysregulated in cancer,2 prompting us to investigate whether human cancer cells are susceptible to SARS-CoV-2 infection,and whether chemotherapy could modulate a cancer patient's risk for infection.

关键词： infection ACE2 cancer

适应体育运动干预对孤独症谱系障碍儿童视觉工作记忆的影响

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中国体育科技 2017年第3期53卷 55-62页

作者：朱瑜许翀万芹郭立亚 sean X.Cai 西南大学教育学部重庆400715 西南大学体育学院国家体育总局体质评价与运动机能监控重点实验室重庆400715 重庆电子工程职业学院马克思主义与通识教育学院重庆401331 上海应用技术大学体育教育部上海201418 阿克伦大学体育科学与健康学院美国俄亥俄州44325

孤独症谱系障碍(ASD)儿童的一个关键缺陷在于工作记忆。因此,本研究的目的在于讨论ASD儿童经过适应体育(APE)运动干预后,工作记忆能力是否能得到改善。采用视觉工作记忆的电脑程序进行测试,采用实验前后的被试间设计,测试适应体育运动... 详细信息

孤独症谱系障碍(ASD)儿童的一个关键缺陷在于工作记忆。因此,本研究的目的在于讨论ASD儿童经过适应体育(APE)运动干预后,工作记忆能力是否能得到改善。采用视觉工作记忆的电脑程序进行测试,采用实验前后的被试间设计,测试适应体育运动干预对ASD儿童视觉工作记忆能力的影响。研究结果显示:1)APE干预可以显著改善ASD个体视觉工作记忆任务表现和视觉工作记忆能力。研究结果证实APE运动干预的有效性。适应体育运功干预可作为对于低工作记忆能力的、存在发展障碍的ASD个体的补救干预措施。2)复杂球类技能运动干预可以改善ASD个体视觉工作记忆能力。3)未来的研究应根据不同群体的认知特征,针对适应体育的学科特征,发展更多有效的运动干预内容和干预方法,手段。

关键词：孤独症谱系障碍视觉工作记忆适应体育