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Controlling atomic phosphorous-mounting surfaces of ultrafine W_(2)C nanoislands monodispersed on the carbon frameworks for enhanced hydrogen evolution

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Chinese Journal of Catalysis 2021年第10期42卷 1798-1807页

作者： Xiangyong Zhang Tianying Liu Ting Guo Xueying Han Zongyun Mu Qiang Chen Jiangmin Jiang Jing Yan jiaren Yuan Dezhi Wang Zhuangzhi Wu Zongkui Kou School of Materials Science and Engineering Central South UniversityChangsha 410083HunanChina State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina School of Physics and Electronic Engineering Jiangsu UniversityZhenjiang 212013JiangsuChina

Controllably mounting foreign atoms on the surfaces of earth-abundant electrocatalysts strongly improve their surface electronic properties for optimizing the catalytic performance of surficial sites to an unusual level,and provides a good platform to gain deep insights into catalytic *** present work describes,employing ultrafine W2C nanoislands(average size:2.3 nm)monodispersed on the N,P dual-doped carbon frameworks as a model system,how to regulate the atomic phosphorous-mounting effect on the surfaces of W_(2)C to derive an active and stable P-mounting W_(2)C(WCP)catalyst for both acidic and alkaline hydrogen evolution reaction(HER).Since in situ phosphorus substitution into carbon sites of preformed W_(2)C nanoislands gradually proceeds from surfaces to solids,so that using a proper amount of phosphorus sources can readily control the surface mounting level to avoid the mass P-doping into the *** this way,the activity per active site of WCP catalyst with robust stability can be optimized to 0.07 and 0.56 H_(2 )s^(-1) at-200 mV overpotential in acid and base,respectively,which reach up to the several-fold of pure-phase W_(2)C(0.01 and 0.05 H_(2) s^(-1)).Theoretical investigations suggest that compared with solid P doping,the P mounting on W_(2)C surface can more remarkably enhance its metallicity and decrease the hydrogen release *** finding disclosed a key correlation between surface foreign atom-mounting and catalytic activity,and suggested a logical extension to other earth-abundant catalysts for various catalytic reactions.

关键词： Tungsten carbide Doping Surficial engineering Hydrogen evolution reaction Electrocatalyst

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网络消费领域算法滥用行为的法律规制

法律适用 2023年第9期2023卷 74-84页

作者：芦加人宁波大学科学技术学院

算法在网络消费领域的适用既能提高消费决策效率,又能降低消费活动成本,但算法滥用行为导致的侵害消费者权益现象也不容忽视。网络消费领域可能被不当使用算法主要为推荐型算法、限制型算法、评价型算法、定价型算法以及概率型算法,不... 详细信息

算法在网络消费领域的适用既能提高消费决策效率,又能降低消费活动成本,但算法滥用行为导致的侵害消费者权益现象也不容忽视。网络消费领域可能被不当使用算法主要为推荐型算法、限制型算法、评价型算法、定价型算法以及概率型算法,不同算法类型导致的侵害消费者权益现象不同。算法本身所具有的不透明、难解释的技术特征,法律制度供给不足以及监督管理机制不完善加剧了算法滥用行为的规制难度。应以促进算法公开,完善制度供给,创新算法监督管理机制为抓手,实现算法滥用行为的法律规制。

关键词：算法类型算法黑箱算法立法算法监督

TIMP-3 expression associates with malignant behaviors and predicts favorable survival in HCC

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TIMP-3 expression associates with malignant behaviors and pr...

Modeling of Source Rocks in Moliqing Basin of Yitong Graben, Northeast China

第十四届全国老年医学进展学术会议暨江苏省中西医结合学会老年分会学术年会

作者： jiaren Xu Jiang Li Liang Qiu Tingting Shu Department of Hematology and Oncology Jiangsu Provincial Hospital Department of Pathology Jiangsu Provincial Hospital Department of Clinical Laboratory Jiangsu Provincial Hospital

The tissue inhibitors of metalloproteinases(TIMPs)are the proteins that specifically inhibit the proteolytic activity of matrix metalloproteinases(MMPs)and TIMP-3has been identified as a unique tumor suppressor which is the only member of the TIMPs that could tightly bind to the extracellular matrix and is demonstrated to inhibit

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International Journal of Geosciences 2019年第4期10卷 439-453页

作者： Obed Kweku Agbadze jiaren Ye Qiang Cao Gerardo Emilio Di Trolio Bravo Key Laboratory of Tectonics and Petroleum Resources China University of Geosciences MOE Wuhan China

Moliqing basin is a continental sedimentary basin in the northeast of China, between Changchun and Jilin. The source rocks characterization was done using the data of three wells to define the generative potential, kerogen type and thermal maturity. Basin Mod software was used for the models. The three Eocene source rock formations in the basin are Shuangyang, Sheling and Yongji. Shuangyang is the most important due to its quantity and maturity levels of kerogen with very good generative potential (TOC between 2% - 4%) towards the southern region of the basin. According to the Tmax values, all three source rocks reached the mature stage, and the levels increased from early mature for the Yongji formation, to late mature for some locations of the Shuangyang formation. The 1D and 2D modeling reconstructed shows that the heat flow developed in the basin laid between 64 and 78.1 mW/m2 and had maximum heat flow location towards the center of the basin.

关键词： BHT Pyrolysis Tmax Hydrocarbons Eocene Source Rock Moliqing Basin Yitong Graben

Pocket Modification of x-Amine Transaminase AtATA for Overcoming the Trade-Off Between Activity and Stability Toward 1-Acetonaphthone

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Engineering 2023年第11期 203-214页

作者： jiaren Cao Fangfang Fan Changjiang lyu Sheng Hu Weirui Zhao Jiaqi Mei Shuai Qiu Lehe Mei Jun Huang Key Laboratory of Chemical and Biological Processing Technology for Farm Products of Zhejiang Province Zhejiang Provincial Collaborative Innovation Center of Agricultural Biological Resources Biochemical ManufacturingSchool of Biological and Chemical EngineeringZhejiang University of Science and TechnologyHangzhou 310023China School of Biological and Chemical Engineering Ningbo Tech UniversityNingbo 315100China Hangzhou Huadong Medicine Group Co.Ltd. Hangzhou 310011China College of Chemical and Biological Engineering Zhejiang UniversityHangzhou 310027China Jinhua Advanced Research Institute Jinhua 321019China

Amine transaminases(ATAs)catalyze the asymmetric amination of prochiral ketones or aldehydes to their corresponding chiral ***,the trade-off between activity and stability in enzyme engineering represents a major obstacle to the practical application of *** this trade-off is important for developing robustly engineered enzymes and a universal approach for ***,we modified the binding pocket of co-ATA from Aspergillus terreus(AtATA)to identify the key amino acid residues controlling the activity and stability of AtATA toward *** discovered a structural switch comprising four key amino acid sites(R128,V149,L182,and L187),as well as the"best"mutant(AtATAD224K/V149A/L182 F/L187F;termed M4).Compared to the parent enzyme AtATAD224K(AtATAPa),M4 increased the catalytic efficiency(k_(cat)/K_(m)^(1-acetonaphthone),where kcatis the constant of catalytic activities and is 10.1 min^(-1),K_(m)^(1-acetonaphthoneis) Michaelis-Menten constant and is 1.7 mmol·L^(-1))and half-life(t1/2)by 59-fold to 5.9 L·min^(-1)·mmol-1and by 1.6-fold to 46.9 min,***,using M4 as the biocatalyst,we converted a 20 mmol·L^(-1)aliquot of 1-acetonaphthone in a 50 mL scaled-up system to the desired product,(R)-(+)-1(1-naphthyl)ethylamine((R)-NEA),with 78%yield and high enantiomeric purity(R>99.5%)within 10 h.M4 also displayed significantly enhanced activity toward various 1-acetonaphthone *** related structural properties derived by analyzing structure and sequence information of robust ATAs illustrated their enhanced activity and *** of intramolecular interactions and expansion of the angle between the substratebinding pocket and the pyridoxal 5’-phosphate(PLP)-binding pocket contributed to synchronous enhancement of ATA thermostability and ***,this pocket engineering strategy successfully transferred enhanced activity and thermostability to three other ATAs,which exhibited 8%-22%sequence simila

关键词： Trade-off Co-evolution Amine transaminase (R)-(+)-1(1-naphthyl)ethylamine

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大型电动轮自卸车车架焊接

焊接 1989年第2期 22-25页

作者：黄家仁湘潭电机厂

介绍了国产大型电动轮自卸车车架焊接结构的特点、焊接工艺性评定方法、焊接工艺以及提高车架焊接质量的措施。

关键词：车架自卸车焊接电动轮

Single Nucleotide Polymorphism of FSHβ Gene Associated with Reproductive Traits in Japanese Flounder (Paralichthys olivaceus)

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Journal of Ocean University of China 2010年第4期9卷 395-398页

作者： HE Feng WEN Haishen YU Dahui LI Jifang SHI Bao CHEN Caifang ZHANG jiaren JIN Guoxiong CHEN Xiaoyan Shi Dan Yang Yanping South China Sea Fisheries Research Institute Chinese Academy of Fishery Sciences Guangzhou 510300 P. R. China Fisheries College Ocean University of China Qingdao 266003 P. R. China

Follicle stimulating hormone β (FSHβ) of Japanese flounder (Paralichthys olivaceus) plays a key role in the regulation of gonadal *** study aimed to investigate molecular genetic characteristics of the FSHβ gene and elucidate the effects of single nucleotide polymorphisms (SNPs) of FSHβ on reproductive traits in Japanese *** used polymerase chain reaction single-strand conformation polymorphism (PCR-SSCP) and sequencing of the FSHβ gene in 60 *** identified only an SNP (T/C) in the coding region of exon3 of FSHβ.The SNP (T/C) did not lead to amino acid changes at the position 340 bp of FSHβ *** analysis showed that the SNP was significantly associated with testosterone (T) level and gonadosomatic index (GSI) (P<0.05).Individuals with genotype TC of the SNP had significantly higher serum T levels and GSI (P<0.05) than that of genotype ***, FSHβ gene could be a useful molecular marker in selection for prominent reproductive trait in Japanese Flounder.

关键词： Japanese flounder FSHβ SNP reproductive trait

Intelligent Decoupling in AGC-AFC System Based on CMAC Model

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Intelligent Decoupling in AGC-AFC System Based on CMAC Model

第25届中国控制与决策会议

作者： jiaren Guo Xiting Wang Ying Xu Hang Li Shiguo Jiang Shandong gold mining (Laizhou) refinery co. Ltd.

ISBN: (纸本)9781467355339

Flatness and gauge are the most important factors in strip quality. Automatic gauge control （AGC） and automatic flatness control （AFC） are a coupled multivariable system, which holds down the quality of strip heavily. In this paper the dynamic mathematics model is established considering AGC and AFC as a whole system, designing intelligent-decoupling method based on CMAC model. The simulation shows that the intelligent decoupling method is able to eliminate the effect of the coupling in AGC-AFC system as quickly as possible, guarantee the stability of the system, at the same time the intelligent controller has good performances on adaptively tracking target and resisting disturbances.

关键词： AGC AFC CMAC Intelligent decoupling control

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ERG理论视角下高校辅导员职业幸福感研究

职业技术教育 2021年第23期42卷 54-57页

作者：劳家仁中国矿业大学马克思主义学院南京工业职业技术大学党委办公室南京210023 南京工业职业技术大学校长办公室南京210023

职业幸福感对辅导员工作开展的深度与成效会产生积极的影响。基于ERG理论构建辅导员职业幸福感模型,提出研究假设,通过问卷调查获得相关数据,借助SPSS进行分析。研究发现:辅导员的职业幸福感整体偏低,并且出现工作热情减退等职业倦怠现... 详细信息

职业幸福感对辅导员工作开展的深度与成效会产生积极的影响。基于ERG理论构建辅导员职业幸福感模型,提出研究假设,通过问卷调查获得相关数据,借助SPSS进行分析。研究发现:辅导员的职业幸福感整体偏低,并且出现工作热情减退等职业倦怠现象。感知需要在组织支持的调节作用下对感知幸福发挥正向影响作用,感知幸福对工作状态也发挥正向影响作用。基于此,可通过引导辅导员建立正确积极的职业观、建立良好的外部氛围、建立健全辅导员职业生涯发展制度、完善辅导员薪酬体系等策略,提升辅导员职业幸福感。

关键词： ERG理论高校辅导员职业幸福感