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Heteroatom doping regulates the catalytic performance of singleatom catalyst supported on graphene for ORR

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Nano Research 2024年第3期17卷 1086-1093页

作者： Ji-Kai sun Yu-Wei Pan Meng-Qian xu lei sun Shaolong Zhang Wei-Qiao Deng Dong Zhai institute of Molecular sciences and engineering Institute of Frontier and Interdisciplinary ScienceShandong UniversityQingdao 266237China College of Chemistry and environmental engineering Shenzhen UniversityShenzhen 518060China

Replacing fossil fuels with fuel cells is a feasible way to reduce global energy shortages and environmental ***,the oxygen reduction reaction(ORR)at the cathode has sluggish kinetics,which limits the development of fuel *** is significant to develop catalysts with high catalytic activity of *** single-atom catalysts(SACs)of Pt supported on heteroatom-doped graphene are potential candidates for *** we studied the SACs of Pt with different heteroatoms doping and screened out Pt-C_(4) and Pt-C_(3)O_(1) structures with only 0.13 V overpotential for ***,it is found that B atoms doping could weaken the adsorption capacity of Pt,while N or O atoms doping could enhance *** regularity was verified on Fe *** the electronic interaction analysis between Pt and adsorbate,we explained the mechanism of this regularity and further proposed a new descriptor named corrected d-band center(ε_(d-corr))to describe *** descriptor is an appropriate reflection of the number of free electrons of the SACs,which could evaluate its adsorption *** work provides a purposeful regulatory strategy for the design of ORR catalysts.

关键词： single-atom catalyst(SAC) oxygen reduction reaction(ORR) heteroatom doping corrected d-band center descriptor

The transgenerational effects of maternal low-protein diet during lactation on offspring

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Journal of Genetics and Genomics 2024年第8期51卷 824-835页

作者： Lin-Jian Gu Li Li Qian-Nan Li Ke xu Wei Yue Jing-Yi Qiao Tie-Gang Meng Ming-Zhe Dong Wen-Long lei Jia-Ni Guo Zhen-Bo Wang Qing-Yuan sun State Key Laboratory of Stem Cell and Reproductive Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China university of Chinese Academy of sciences Beijing 100049China institute of Laboratory Animal sciences CAMS&PUMCBeijing 100021China Guangzhou Key Laboratory of Metabolic Diseases and Reproductive Health Guangdong-Hong Kong Metabolism&Reproduction Joint LaboratoryReproductive Medicine CenterGuangdong Second Provincial General HospitalGuangzhouGuangdong 510317China

environmental factors such as diet and lifestyle can influence the health of both mothers and ***,its transgenerational transmission and underlying mechanisms remain largely ***,using a maternal lactation-period low-protein diet(LPD)mouse model,we show that maternal LPD during lactation causes decreased survival and stunted growth,significantly reduces ovulation and litter size,and alters the gut microbiome in the female LPD-F1 *** transcriptome of LPD-F1 metaphase II(MII)oocytes shows that differentially expressed genes are enriched in female pregnancy and multiple metabolic ***,maternal LPD causes early stunted growth and impairs metabolic health,which is transmitted over two *** methylome alteration of LPD-F1 oocytes can be partly transmitted to the F2 ***,our results reveal that LPD during lactation transgenerationally affects offspring health,probably via oocyte epigenetic changes.

关键词： Lactationdiet Maternal low-proteindiet DNAmethylation Transgenerational effect Oocyte

Tomato CYP94C1 inactivates bioactive JA-lle to attenuate jasmonate-mediated defense during fruit ripening

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Molecular Plant 2024年第4期17卷 509-512页

作者： Tianxia Yang lei Deng Qinyang Wang Chuanlong sun Muhammad Ali Fangming Wu Huawei Zhaj Qian xu Peiyong Xin Shujing Cheng Jinfang Chu Tingting Huang Chang-Bao Li Chuanyou Li Key Laboratory of Seed Innovation Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China College of Life sciences Shandong Agricultural UniversityTai'an 271018China Taishan Academy of Tomato Innovation Tai'an 271018China CAS Center for Excellence in Biotic Interactions University of Chinese Academy of SciencesBeijing 100049China College of Horticulture science and engineering Shandong Agricultural UniversityTaian 271018China institute of Vegetable Qingdao Academy of Agricultural SciencesQingdao 266100China Key Laboratory of Biology and Genetic Improvement of Horticultural Crops(North china) Ministry of AgricultureBeijing Vegetable Research CenterBeijing Academy of Agriculture and Forestry SciencesBejing 100097China Frontiers science Center for Molecular Design Breeding(MOE) Department of Plant Genetics and BreedingChina Agricultural UniversityBeijing 100193China

Dear Editor,Fruit rot caused by necrotrophic pathogens results in substantial reductions in fruit yield and revenues worldwide(Petrasch et al.,2019).A widespread phenomenon in fleshy fruit species is the susceptibility of ripe fruits to necrotrophs(Silva et al.,2021),which facilitates seed dispersal(Forlani et al.,2019)but causes severe post-harvest losses in *** most of the nutritional and sensory qualities of fruits are elaborated at the ripening stage(Liu et al.,2015),balancing fruit ripening and pathogen resistance to maintain fruit quality has proven to be challenging.A deeper understanding of the mechanisms underlying the increased susceptibility of fruits to necrotrophs during ripening could lead to new strategies for producing necrotrophy-resistant fruits without compromising ripening-relatedquality.

关键词： susceptibility maintain fruit

Screening for metastasis-related genes in mouse melanoma cells through sequential tail vein injection

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Biophysics Reports 2024年第1期10卷 15-21页

作者： Qinggang Hao Rui Dong Weiyu Bai Dong Chang Xinyi Yao Yingru Zhang Huangying xu Huiyan Li Xiang Kui Feng Wang Yan Wang Chengqin Wang Yujie lei Yan Chen Junling Shen lei Sang Yan Bai Jianwei sun Center for Life sciences Yunnan Key Laboratory of Cell Metabolism and Diseases State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan School of Life Sciences Yunnan University Key Laboratory of Tumor Immunological Prevention and Treatment of Yunnan Province Yan'an Hospital Affiliated to Kunming Medical University shandong Provincial Key Laboratory of Animal Resistance Biology Collaborative Innovation Center of Cell Biology in Universities of Shandong Center for Cell Structure and Function Institute of Biomedical Science College of Life Sciences Shandong Normal University Department of Pathology The Second Affiliated Hospital of Kunming Medical University State Key Laboratory of Bioactive Molecules and Druggability Assessment Institute of Genomic Medicine College of Pharmacy Jinan University Department of Pathology School of Basic Medicine Qingdao University Department of Thoracic Surgery Yunnan Cancer Hospital & The Third Affiliated Hospital of Kunming Medical University & Yunnan Cancer Center

Tumor metastasis, responsible for approximately 90% of cancer-associated mortality, remains poorly understood. Here in this study, we employed a melanoma lung metastasis model to screen for metastasis-related genes. By sequential tail vein injection of mouse melanoma B16F10 cells and the subsequently derived cells from lung metastasis into BALB/c mice, we successfully obtained highly metastatic B16F15 cells after five rounds of in vivo screening. RNA-sequencing analysis of B16F15 and B16F10 cells revealed a number of differentially expressed genes, some of these genes have previously been associated with tumor metastasis while others are novel discoveries. The identification of these metastasis-related genes not only improves our understanding of the metastasis mechanisms, but also provides potential diagnostic biomarkers and therapeutic targets for metastatic melanoma.

关键词： Melanoma Lung metastasis model Gene screening Tail vein injection

Novel insights into the dehalogenation mechanism and ecotoxicity assessment of 6:2 Cl-PFESA from density functional theory calculations

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Emerging Contaminants 2024年第2期10卷 115-122页

作者： Youxin xu Chenxi Zhang Zhe Wang Bing Chen Xiaomin sun Shuguang Wang Huifang Tian institute of environmental Biotechnology and Functional Materials School of Environmental Science and EngineeringShandong UniversityQingdaoShandong266237China shandong engineering Laboratory for Clean Utilization of Chemical Resources Weifang University of Science and TechnologyWeifang262700China Northern Region Persistent Organic Pollution Control(NRPOP)Laboratory Faculty of Engineering and Applied ScienceMemorial University of NewfoundlandSt.John'sNLA1B 3X5Canada Environment Research institute Shandong UniversityQingdaoShandong266237China Sino-French Research institute for Ecology and Environment(ISFREE) Shandong UniversityQingdaoShandong266237China

The electroplating industry is the main source of 6:2 chlorinated polyfluorinated ether sulfonate(6:2 Cl-PFESA)pollution,which presents risks to human health and the *** is therefore crucial to develop effective 6:2 Cl-PFESA degradation *** oxidation is a potential treatment method for 6:2 Cl-PFESA due to its outstanding oxidative degradability following the generation of the sulfate radical(SO_(4)^(•−))and hydroxyl radical(•OH).It has proven difficult to acquire a full understanding of the reaction mechanism and formation of intermediate(IM)products through conventional experimental studies because they are costly and ***,a theoretical analysis method based on density functional theory(DFT)calculations was *** DFT results showed that electron transfer for the degradation of 6:2 Cl-PFESA could be initiated by the protonated sulfate radical(HSO_(4)•,ΔG≠SET=9.16 kcal/mol),rather than SO4•−(ΔG≠SET=41.60 kcal/mol).After desulfonation,the reaction underwent stepwise decarboxylation cycles under the action of•OH,leading to the elimination of the CF_(2) units until there was complete mineralization into HCl,HF,and CO_(2).Furthermore,the IMs and the end products of 6:2 Cl-PFESA were evaluated using ECOSAR and TEST *** low bioaccumulation of the short-chain IMs meant that they could be considered safe in terms of ecotoxicity and health *** research determined the theoretical and mechanistic basis of the effects of persulfate in the treatment of water containing 6:2 Cl-PFESA,and its structural analogues.

关键词： Active free radicals Dehalogenation reaction Degradation mechanisms Theoretical prediction Ecotoxicity assessment

Water consumption and biodiversity:Responses to global emergency events

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science Bulletin 2024年第16期69卷 2632-2646页

作者： Dandan Zhao Junguo Liu Laixiang sun Klaus Hubacek Stephan Pfister Kuishuang Feng Heran Zheng xu Peng Daoping Wang Hong Yang lei Shen Fei Lun xu Zhao Bin Chen Marko Keskinen Shaohui Zhang Jialiang Cai Olli Varis Water&Development Research Group Department of Built EnvironmentAalto UniversityEspoo 15200Finland School of Water Conservancy North China University of Water Resources and Electric PowerZhengzhou 450046China School of environmental science and engineering Southern University of Science and TechnologyShenzhen 518055China Department of Geographical sciences University of MarylandCollege Park 20742USA School of Finance and Management SOASUniversity of LondonLondon WC1H0XGUK Integrated Research on Energy Environment and SocietyEnergy and Sustainability Research Institute GroningenUniversity of GroningenGroningen 9747AGthe Netherlands ETH Zurich Institute of Environmental EngineeringZurich 8093Switzerland The Bartlett School of Sustainable Construction University College LondonLondon WC1E6BTUK School of Business Jiangnan UniversityWuxi 214122China Department of Computer science and Technology University of CambridgeCambridge CB21TNUK w2e environmental Consulting GmbH Duebendorf 8600Switzerland Key Laboratory for Resource Use and environmental Remediation Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China College of Land science and Technology China Agricultural UniversityBeijing 100083China institute of Blue and Green Development Shandong UniversityWeihai 264209China Fudan Tyndall Center Department of Environmental Science and EngineeringFudan UniversityShanghai 200438China School of Economics and Management Beihang UniversityBeijing 100191China International institute for Applied Systems Analysis Laxenburg A-2361Austria

Given that it was a once-in-a-century emergency event,the confinement measures related to the coronavirus disease 2019(COVID-19)pandemic caused diverse disruptions and changes in life and work *** changes significantly affected water consumption both during and after the pandemic,with direct and indirect consequences on ***,there has been a lack of holistic evaluation of these ***,we propose a novel framework to study the impacts of this unique global emergency event by embedding an environmentally extended supply-constrained global multi-regional input-output model(MRIO)into the drivers-pressure-state-impact-response(DPSIR)*** framework allowed us to develop scenarios related to COVID-19 confinement measures to quantify country-sector-specific changes in freshwater consumption and the associated changes in biodiversity for the period of *** results suggest progressively diminishing impacts due to the implementation of COVID-19 vaccines and the socio-economic system’s self-adjustment to the new *** 2020,the confinement measures were estimated to decrease global water consumption by about 5.7% on average across all scenarios when compared with the baseline level with no confinement ***,such a decrease is estimated to lead to a reduction of around 5% in the related pressure on *** the interdependencies and interactions across global supply chains,even those countries and sectors that were not directly affected by the COVID-19 shocks experienced significant impacts:Our results indicate that the supply chain propagations contributed to 79% of the total estimated decrease in water consumption and 84%of the reduction in biodiversity loss on *** study demonstrates that the MRIO-enhanced DSPIR framework can help quantify resource pressures and the resultant environmental impacts across supply chains when facing a global emergency ***,we recommend the development o

关键词： Global emergency events Water-biodiversity causal effect COVID-19 Biodiversity MRIO-enhanced DPSIR framework Supply-chain network High-resolution water consumption dataset Supply-constrained multi-regional input-output(mixed MRIO)model

Refractory black carbon aerosols in rainwater in the summer of 2019 in Beijing:Mass concentration,size distribution and wet scavenging ratio

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Journal of environmental sciences 2023年第10期132卷 31-42页

作者： shandong lei Baozhu Ge Hang Liu Jiannong Quan Danhui xu Yuting Zhang Weijie Yao Lu lei Yu Tian Qi Liao Xiaoyong Liu Jie Li Jinyuan Xin Yele sun Pingqing Fu Junji Cao Zifa Wang Xiaole Pan State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary sciences University of Chinese Academy of SciencesBeijing 100049China institute of Urban Meteorology China Meteorological AdministrationBeijing 100089China National Center for Climate Change Strategy and International Cooperation Ministry of Ecology and EnvironmentBeijing 100035China Center for Excellence in Regional Atmospheric Environment Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science and TechnologyNanjing 210044China institute of Surface-Earth System science Tianjin UniversityTianjin 300072China institute of Atmospheric Physics Chinese Academy of SciencesBeijing 100190China

Black carbon(BC)aerosols in the atmosphere play a significant role in climate systems due to their strong ability to absorb solar *** lifetime of BC depends on atmospheric transport,aging and consequently on wet scavenging processes(in-cloud and below-cloud scavenging).In this study,sequential rainwater samples in eight rainfall events collected in 2 mm interval were measured by a tandem system including a single particle soot photometer(SP2)and a *** results showed that the volume-weighted average(VWA)mass concentrations of refractory black carbon(rBC)in each rainfall event varied,ranging from 10.8 to 78.9μg/*** highest rBC concentrations in the rainwater samples typically occurred in the first fraction from individual rainfall *** geometric mean median mass-equivalent diameter(MMD)decreased under precipitation,indicating that rBC with larger sizes was relatively aged and preferentially removed by wet scavenging.A positive correlation(R2=0.73)between the VWA mass concentrations of rBC in rainwater and that in ambient air suggested the important contribution of scavenging ***,the contributions of in-cloud and below-cloud scavenging were distinguished and accounted for 74%and 26%to wet scavenging,*** scavenging ratio of rBC particles was estimated to be 0.06 on *** study provides helpful information for better understanding the mechanism of rBC wet scavenging and reducing the uncertainty of numerical simulations of the climate effects of rBC.

关键词： Refractory black carbon Wet deposition Size distribution

三轴各向异性层状介质磁偶极子源电磁场递推算法及应用

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石油钻探技术 2024年第1期52卷 130-139页

作者：许孝凯赵伟娜张晋言董经利孙清溪王磊中石化经纬有限公司地质测控技术研究院山东东营266555 青岛理工大学理学院山东青岛266520 中石化经纬有限公司山东青岛266075 中国石油大学(华东)地球科学与技术学院山东青岛266580

为快速、精确模拟复杂三轴各向异性介质中的电磁波测井响应规律,研究了一种适用于水平层状地层的磁偶极子源电磁场伪解析递推算法。该算法通过双重傅里叶变换,将空间域的三维电磁场正演转换为一系列对一维谱域场的求解,将地层上、下界... 详细信息

为快速、精确模拟复杂三轴各向异性介质中的电磁波测井响应规律,研究了一种适用于水平层状地层的磁偶极子源电磁场伪解析递推算法。该算法通过双重傅里叶变换,将空间域的三维电磁场正演转换为一系列对一维谱域场的求解,将地层上、下界面位置引入谱域电磁场通解公式,克服了传统方法存在的数值溢出问题;进一步利用传播矩阵方法,递推获得各个地层界面处的幅度系数;针对积分核函数存在的强烈振荡问题,提出了一种双重正余弦数值滤波积分方法,实现了谱域到空间域电磁场的准确、快速转换。模拟结果表明:三轴各向异性导致电测井响应更为复杂,传统各向异性电测井解释模型不再适用。新递推算法是复杂各向异性储层测井响应分析的基础,也为电性参数准确提取和精准地质导向提供了正演手段。

关键词：三轴各向异性层状介质电磁波测井递推算法正余弦滤波积分

基于分布式光纤声传感火车噪声属性的车型识别及运行规律

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地球物理学报 2024年第7期67卷 2850-2862页

作者：郑兴鹏邢磊张汉羽徐团伟刘怀山吴时国中国海洋大学海底科学与探测技术教育部重点实验室山东青岛266100 海南省生态环境地质调查院海口570206 青岛市海洋地球物理勘探技术重点实验室山东青岛266100 中国科学院深海科学与工程研究所海南省海底资源与探测技术重点实验室海南三亚572000 中国科学院半导体研究所传感技术国家重点实验室北京100083

火车运行时产生强烈的移动噪声传播至地下空间,形成一种绿色环保、强能量的人工地震波.由于载荷系统形态基本固定,火车运行时间规律,震源重复性高,这种火车震源被广泛应用于轨道安全监测、近地表成像和城市地下空间探测等领域.分布式光... 详细信息

火车运行时产生强烈的移动噪声传播至地下空间,形成一种绿色环保、强能量的人工地震波.由于载荷系统形态基本固定,火车运行时间规律,震源重复性高,这种火车震源被广泛应用于轨道安全监测、近地表成像和城市地下空间探测等领域.分布式光纤声传感是一种新兴的地震采集技术,拥有密集采样、布设简单、抗电磁干扰能力强等优点,近年来在城市交通事件微震监测、裂隙探测和地下空间成像领域逐步应用.本研究基于分布式光纤声传感技术获得的秦皇岛试验场火车移动噪声数据,拾取了30个火车交通事件,开展火车噪声视速度、波形和频谱、能量时空变化的属性分析.结果表明:试验区光纤传感的火车噪声具有明显的属性差异,低速度重载荷的火车比高铁引起的地震振幅更大、能量更强,低速火车产生的噪声包含了丰富的低频信息;根据已知的视速度、振幅属性、时频属性,划分了4种类型的火车,并揭示了它们的进出站规律.本研究拓展了分布式光纤传感的应用场景,证明分布式光纤声传感有望应用于不同车型的通勤监测.

关键词：分布式光纤声传感火车震源交通事件噪声属性