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Strain engineering of Pt-based electrocatalysts for oxygen reaction reduction

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Frontiers in Energy 2024年第2期18卷 241-262页

作者： Zeyu WANG Yanru LIU Shun CHEN Yun ZHENG Xiaogang FU Yan ZHANG wanglei WANG State Key Laboratory of Solidification Processing Atomic Control and Catalysis Engineering LaboratorySchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China State Key Laboratory of Oral and Maxillofacial Reconstruction and Regeneration National Clinical Research Center for Oral DiseasesShaanxi Key Laboratory of StomatologyDepartment of Dental MaterialsSchool of StomatologyThe Fourth Military Medical UniversityXi’an 710032China Institute of New Energy Materials and Engineering School of Materials Science and EngineeringFuzhou UniversityFuzhou 350108China Key Laboratory of Marine Chemistry Theory and Technology(Ministry of Education) College of Chemistry and Chemical EngineeringOcean University of ChinaQingdao 266100China

Proton exchange membrane fuel cells(PEMFCs)are playing irreplaceable roles in the construction of the future sustainable energy system.However,the insufficient performance of platinum(Pt)-based electrocatalysts for oxygen reduction reaction(ORR)hinders the overall efficiency of PEMFCs.Engineering the surface strain of catalysts is considered an effective way to tune their electronic structures and therefore optimize catalytic behavior.In this paper,insights into strain engineering for improving Pt-based catalysts toward ORR are elaborated in detail.First,recent advances in understanding the strain effects on ORR catalysts are comprehensively discussed.Then,strain engineering methodologies for adjusting Ptbased catalysts are comprehensively discussed.Finally,further information on the various challenges and potential prospects for strain modulation of Pt-based catalysts is provided.

关键词： strain engineering Pt-based catalysts oxygen reduction reaction(ORR) catalytic performance proton exchange membrane fuel cells(PEMFCs)

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知识增强的自监督表格数据异常检测方法研究

计算机工程与应用 2024年第10期60卷 140-147页

作者：高小玉赵晓永王磊北京信息科技大学信息管理学院北京100192

传统的监督异常检测方法快速发展,为了减少对标签的依赖,自监督预训练方法得到了广泛的研究,同时研究表明额外的内在语义知识嵌入对于表格学习至关重要。为了挖掘表格数据当中存在的丰富知识信息,提出了一种基于知识增强的自监督表格数... 详细信息

传统的监督异常检测方法快速发展,为了减少对标签的依赖,自监督预训练方法得到了广泛的研究,同时研究表明额外的内在语义知识嵌入对于表格学习至关重要。为了挖掘表格数据当中存在的丰富知识信息,提出了一种基于知识增强的自监督表格数据异常检测方法(self-supervised tabular data anomaly detection method based on knowledge enhancement,STKE)并进行了改进。提出的数据处理模块将领域知识(语义)、统计数学知识融入到特征构建中,同时自监督预训练(参数学习)提供上下文知识先验,实现表格数据的丰富信息迁移。在原始数据上采用mask机制,通过学习相关的非遮掩特征来学习遮掩特征,同时预测在数据隐层空间加性高斯噪声的原始值。该策略促使模型即使在有噪声输入的情况下也能恢复原始的特征信息。使用混合注意机制有效提取数据特征之间的关联信息。在6个数据集上的实验结果展现了提出的方法优越的性能。

关键词：异常检测自监督知识增强预训练

N-苄基丙烯酰胺的电化学三氟甲基化/螺环化合成三氟甲基取代2-氮杂螺[4.5]癸烷

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有机化学 2024年第3期44卷 981-988页

作者：周兰何红杨德巧侯中伟王磊台州学院高等研究院药学院浙江台州318000 杭州师范大学材料与化学化工学院、有机硅化学及材料技术教育部重点实验室杭州311121 中国科学院上海有机化学研究所、金属有机化学国家重点实验室上海200032

利用CF_(3)SO_(2)Na作为三氟甲基来源,开发了N-苄基丙烯酰胺的电化学三氟甲基化/螺环化反应.该方法在室温下于一个简单未分室电解池中进行,无需依赖金属试剂和氧化剂,为构建系列三氟甲基取代2-氮杂螺[4.5]癸烷提供了绿色和高效的路径.此... 详细信息

利用CF_(3)SO_(2)Na作为三氟甲基来源,开发了N-苄基丙烯酰胺的电化学三氟甲基化/螺环化反应.该方法在室温下于一个简单未分室电解池中进行,无需依赖金属试剂和氧化剂,为构建系列三氟甲基取代2-氮杂螺[4.5]癸烷提供了绿色和高效的路径.此外,反应易进行克级合成和转化.

关键词：有机电化学三氟甲基化螺环化螺环产物

“时刻保持解决大党独有难题的清醒和坚定”——学习习近平总书记关于大党独有难题重要论述

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浙江理工大学学报（社会科学版） 2024年第1期52卷 11-17页

作者：冒王磊许屹山安徽工业大学马克思主义学院安徽马鞍山243002

习近平总书记关于大党独有难题的重要论述通过对党的悠久历史的深刻考量、对党的极大体量的精准研判和对党的领导地位的清醒认知,科学归置出大党独有难题的形成原因。以联系的观点谋划体系健全、以发展的观点明确战略部署、以矛盾的观... 详细信息

习近平总书记关于大党独有难题的重要论述通过对党的悠久历史的深刻考量、对党的极大体量的精准研判和对党的领导地位的清醒认知,科学归置出大党独有难题的形成原因。以联系的观点谋划体系健全、以发展的观点明确战略部署、以矛盾的观点分析尺度依止,是辩证理解习近平总书记对大党独有难题破解之道的三重维度。在新时代新征程上,习近平总书记关于大党独有难题的重要论述指明了自我革命的前进方向,提高了全党上下的忧患意识,筑牢了民族复兴的坚强保障,彰显出深厚的政治智慧和独特的创新价值。

关键词：习近平重要论述大党独有难题党的建设自我革命从严治党

Porphyra haitanensis polysaccharide(PH)attenuates cell hyperplasia via remodeling the cross-talk between Hippo/YAP and mTOR pathways

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Food Science and Human Wellness 2023年第2期12卷 424-430页

作者： Chong Wang wanglei Lin Zhihua Sun Yiming Sun Yanbo Wang Linglin Fu Food Safety Key Laboratory of Zhejiang Province School of Food Science and BiotechnologyZhejiang Gongshang UniversityHangzhou 310018China The Affiliated High School to Hangzhou Normal University Hangzhou 310030China

Porphyra polysaccharide is a special kind of nutrient showing multiple physiological functions including regulating cell proliferation,but the detailed mechanisms are not fully revealed,impairing its further development and applications.This work was to purify and characterize the Porphyra haitanensis polysaccharide(PH),investigate its physiological function,and demonstrate the underlying mechanisms.The purified PH was first characterized by Fourier-transform infrared spectroscopy.Then an intestinal epithelial cell model was established,in which PH significantly suppressed cell hyperplasia.Specifically,PH activated the Hippo/YAP pathway,which subsequently activated m TOR pathway,however m TOR activated Hippo in the absence of PH.Moreover,both the inhibition of Hippo by YAP1 knock-down and the suppression of m TOR by rapamycin impaired PH function.These results indicated that PH attenuated hyperplasia activity by remodeling the cross-talk between Hippo/YAP and m TOR pathways,which revealed potential targets and approaches for treating hyperplasia-related diseases and provided novel ways to utilize P.haitanensis as well as other related functional foods.

关键词： Porphyra haitanensis Polysaccharide Hippo mTOR Cancer

断陷湖盆陡坡带扇三角洲—滑塌扇复合扇体的沉积演化及油气地质意义——以中非地区Melut盆地A凹陷白垩系为例

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沉积学报 2024年第3期42卷 1058-1072页

作者：陈彬滔马轮洪亮史忠生庞文珠薛罗王磊代寒松赵艳军中国石油勘探开发研究院西北分院兰州730020 中国石油天然气集团公司油藏描述重点实验室兰州730020 中国石油国际勘探开发公司北京100034

【目的】扇三角洲—深水滑塌扇组成的复合扇体作为断陷盆地陡坡带重要的粗粒沉积体系和油气储层,其展布范围、演化期次、成藏模式等一直是湖盆沉积和成藏研究的热点。【方法】以中非地区Melut盆地A凹陷高精度三维地震和钻测井资料为基础... 详细信息

【目的】扇三角洲—深水滑塌扇组成的复合扇体作为断陷盆地陡坡带重要的粗粒沉积体系和油气储层,其展布范围、演化期次、成藏模式等一直是湖盆沉积和成藏研究的热点。【方法】以中非地区Melut盆地A凹陷高精度三维地震和钻测井资料为基础,采用岩心观察、层序划分、地震反射特征与地震属性分析等方法,对扇三角洲—滑塌扇复合扇体的沉积特征与演化规律进行了研究。【结果与结论】发现研究区复合扇体的沉积相类型包括扇三角洲和重力流成因的滑塌扇,滑塌扇具有两类形貌特征,第一类为受坡折控制的线状供源滑塌扇,第二类为受较陡地形坡度控制的单点供源多级滑塌扇。白垩系研究层段刻画出五期扇体,单期复合扇体内部具有退积特征,多期复合扇体具有“先进积、后退积”的垂向演化特征,其中下白垩统Renk组沉积末期复合扇体规模最大,达到148 km^(2)。复合扇体演化主要受幕式构造活动、古地貌和物源供给,以及相对湖平面变化的影响,构造活动强烈、物源供给充足、短轴构造隆升幅度大的时期,复合扇体规模更大,相对湖平面下降初期和上升初期滑塌扇最为发育。提出A凹陷早白垩世和晚白垩世发生沉积格局转换的新认识,明确了断陷期陡坡带扇三角洲-滑塌扇复合扇体的勘探潜力,指导了勘探部署。

关键词： Melut盆地白垩系复合扇体沉积扇三角洲滑塌扇沉积演化成藏模式

Diets,Gut Microbiota and Metabolites

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Phenomics 2023年第3期3卷 268-284页

作者： Yilian Liu wanglei Zhong Xiao Li Feng Shen Xiaonan Ma Qi Yang Shangyu Hong Yan Sun State Key Laboratory of Genetic Engineering and School of Life Sciences Human Phenome InstituteFudan University2005 Songhu RoadYangpu DistrictShanghai 200433China Department of Hepatobiliary Surgery Dongfeng HospitalHubei University of MedicineShiyan 442001HubeiChina Masonic Medical Research Institute 2150 Bleecker StUticaNY 13501USA

The gut microbiota refers to the gross collection of microorganisms,estimated trillions of them,which reside within the gut and play crucial roles in the absorption and digestion of dietary nutrients.In the past decades,the new generation‘omics’(metagenomics,transcriptomics,proteomics,and metabolomics)technologies made it possible to precisely identify microbiota and metabolites and describe their variability between individuals,populations and even different time points within the same subjects.With massive efforts made,it is now generally accepted that the gut microbiota is a dynamically changing population,whose composition is influenced by the hosts’health conditions and lifestyles.Diet is one of the major contributors to shaping the gut microbiota.The components in the diets vary in different countries,religions,and populations.Some special diets have been adopted by people for hundreds of years aiming for better health,while the underlying mechanisms remain largely unknown.Recent studies based on volunteers or diet-treated animals demonstrated that diets can greatly and rapidly change the gut microbiota.The unique pattern of the nutrients from the diets and their metabolites produced by the gut microbiota has been linked with the occurrence of diseases,including obesity,diabetes,nonalcoholic fatty liver disease,cardiovascular disease,neural diseases,and more.This review will summarize the recent progress and current understanding of the effects of different dietary patterns on the composition of gut microbiota,bacterial metabolites,and their effects on the host's metabolism.

关键词： Gut microbiota Metabolites Diets Nutrients Metabolic diseases

BOUNDEDNESS OF MULTILINEAR FRACTIONAL INTEGRAL COMMUTATORS

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Applied Mathematics(A Journal of Chinese Universities) 2004年第2期19卷 212-222页

作者： wanglei PanTing Dept.ofMath. ZhejiangUniv.Hangzhou310028China Univ.ofInternationalRelation Hangzhou310015China

By introducing a kind of maximal operator of fractional order associated with the mean Luxemburg norm and using the technique of Sharp function,multilinear commutators of fractional integral operator with vector symbol b=(b 1,...,b m)defined byI b αf(x)=∫ R∏mj=1(b j(x)-b j(y))1｜x-y｜ n-αf(y)dyare considered.The following priori estimates are proved.For 101Φ1t｜｛y∈Rn:｜I b αf(y)｜>t｝｜ 1q≤ c supt>01Φ1t｜｛y∈Rn:M L(logL) 1r,α(‖b‖f)(y)>t｝｜ 1q,where ‖b‖=∏ m j=1‖b j‖ Osc expL r j,Φ(t)=t(1+log+t) 1r,1r=1r 1+...+1r m, M L(logL) 1r,α is an Orlicz type maximal operator.

关键词： fractional integral operator,commutator,sharp function,Young function,Luxemburg function.

Ultrasonic-enhanced Stereoselective Debromination of vic-Dibromides to Alkenes with Metallic Zinc Powder in Aqueous Media

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Chemical Research in Chinese Universities 2004年第5期20卷 598-601页

作者： LIPin-hua RAOWan-ping WANGMin wanglei DepartmentofChemistry HuaibeiCoalTeachersCollegeHuaibei235000P.R.China StateKeyLaboratoryofOrganometallicChemistry ShanghaiInstituteofOrganicChemistryChineseAcademyofSciencesShanghai200032P.R.China

Carbon-carbon double bond functional groups are often protected through a popular bromination/debromination method because of their reactivity. An ultrasonic-enhanced stereoselective debromination of vic-dibromides with metallic zinc powder in aqueous media has been developed, which generates E-alkenes with excellent yields. The reactivity of vic-dibromides decreases in the order of 1,2-dibromo-1,2-diphenylethane>1,2-dibromo-1-phenylethane>1,2-dibromo-1,2-dialkylethane.

关键词： Stereoselective debromination vic-Dibromides Alkenes Metallic zinc Ultrasonic irradiation Aqueous medium