检索结果-南通市图书馆

Underground Space 2024年第3期16卷 29-43页

作者： Liqiang Cao Xiangsheng Chen Dechun Lu Dingli Zhang Dong Su institute of Geotechnical and Underground Engineering Beijing University of TechnologyBeijing 100124China Underground Polis Academy Shenzhen UniversityShenzhen 518060China Key Laboratory of Urban Underground Engineering of Ministry of Education Beijing Jiaotong UniversityBeijing 100044China Key Laboratory for resilient Infrastructures of Coastal Cities(MOE) Shenzhen UniversityShenzhen 518060China

This paper conducts a theoretical analysis of ground settlements due to shield tunneling in multi-layered soils which are usually encountered in urban *** proposed theoretical solution which is based on the general form of the Mindlin’s solution and Loganathan-Poulos formula can comprehensively consider the in-process tunneling parameters including:unbalanced face pressure,shield-soil friction,unbalanced tail grouting pressure,unbalanced secondary grouting pressure,overloading during tunneling and the ground volume *** method is verified by comparing with the field data from the Qinghuayuan Tunnel Project in terms of the ground surface settlements along the longitudinal and transverse *** to the local settlement or heave caused by the certain tunneling parameters,the ground surface settlements calculated using current solution along the longitudinal direction presents an irregular S-shaped curve instead of the traditional S-shaped *** also find that the effect of the unbalanced secondary grouting pressure and the overloading during tunneling cannot be ignored.

关键词： Tunneling Shield Ground settlements Theoretical analysis Urban areas Multi-layered soils Qinghuayuan Tunnel

Data-driven real-time prediction for attitude and position of super-large diameter shield using a hybrid deep learning approach

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Underground Space 2024年第2期15卷 275-297页

作者： Yanbin Fu Lei Chen Hao Xiong Xiangsheng Chen Andian Lu Yi Zeng Beiling Wang Key Laboratory of Coastal Urban resilient Infrastructures(MOE) Shenzhen UniversityShenzhen 518060GuangdongChina College of Civil and Transportation Engineering Shenzhen UniversityShenzhen 518060GuangdongChina Shenzhen Key Laboratory of Green Efficient and Intelligent Construction of Underground Metro StationShenzhen UniversityShenzhen 518060GuangdongChina Guangdong Yuehai Pearl River Delta Water Supply Limited Company Guangzhou 511458China Shanghai Tunnel Engineering and Rail Transit Design and Research institute Shanghai 200235China

The presented research introduces a novel hybrid deep learning approach for the dynamic prediction of the attitude and position of super-large diameter shields-a critical consideration for construction safety and tunnel lining *** study proposes a hybrid deep learning approach for predicting dynamic attitude and position prediction of super-large diameter *** approach consists of principal component analysis(PCA)and temporal convolutional network(TCN).The former is used for employing feature level fusion based on features of the shield data to reduce uncertainty,improve accuracy and the data effect,and 9 sets of required principal component characteristic data are *** latter is adopted to process sequence data in predicting the dynamic attitude and position for the advantages and potential of convolution *** approach’s effectiveness is exemplified using data from a tunnel construction project in *** obtained results show remarkable accuracy in predicting the global attitude and position,with an average error ratio of less than 2 mm on four shield outputs in 97.30%of ***,the approach displays strong performance in accurately predicting sudden fluctuations in shield attitude and position,with an average prediction accuracy of 89.68%.The proposed hybrid model demonstrates superiority over TCN,long short-term memory(LSTM),and recurrent neural network(RNN)in multiple *** additive exPlanations(SHAP)analysis is also performed to investigate the significance of different data features in the prediction *** study provides a real-time warning for the shield driver to adjust the attitude and position of super-large diameter shields.

关键词： Shield attitude and position Super-large diameter shield PCA-TCN Deep learning Real-time warning

The component-activity interrelationship of cobalt-based bifunctional electrocatalysts for overall water splitting:Strategies and performance

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第4期91卷 453-474页

作者： Mingjie Sun Riyue Ge Sean Li Liming Dai Yiran Li Bin Liu Wenxian Li School of Materials Science and Engineering Shanghai UniversityShanghai 200444China institute of Textiles and Clothing The Hong Kong Polytechnic UniversityHong Kong SAR 999077China School of Materials Science and Engineering University of New South WalesSydneyNew South Wales 2052Australia UNSW Materials&Manufacturing futures institute UNSW SydneyNew South Wales 2052Australia School of Chemical Engineering University of New South WalesSydneyNew South Wales 2052Australia

Cobalt-based electrocatalysts take advantage of potentially harmonizable microstructure and flexible coupling effects compared to commercial noble metal-based catalytic ***,conventional water electrolysis systems based on cobalt-based monofunctional hydrogen evolution reaction(HER)or oxygen evolution reaction(OER)catalysts have certain shortcomings in terms of resource utilization and *** contrast,cobalt-based bifunctional catalysts(CBCs)have attracted much attention in recent years for overall water splitting systems because of their practicality and reduced preparation cost of *** review aims to address the latest development in CBCs for total *** main modification strategies of CBCs are systematically classified in water electrolysis to provide an overview of how to regulate their morphology and electronic ***,the catalytic performance of CBCs in total-hydrolysis is summarized according to the types of cobalt-based phosphides,sulfides and oxides,and the mechanism of strengthened electrocatalytic ability is emphasized through combining experiments and theoretical *** efforts are finally suggested to focus on exploring the dynamic conversion of reaction intermediates and building near-industrial CBCs,designing advanced CBC materials through micro-modulation,and addressing commercial applications.

关键词： Cobalt Bifunctional electrocatalysis Water splitting Modification strategies Electrocatalytic performances

A super sandstorm altered the abundance and composition of airborne bacteria in Beijing

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2024年第10期144卷 35-44页

作者： Fanxuan Xia Zhuo Chen Enze Tian Jinhan Mo Beijing Key Laboratory of Indoor Air Quality Evaluation and Control Department of Building ScienceTsinghua UniversityBeijing 100084China Songshan Lake Materials Laboratory Dongguan 523808China institute of Physics Chinese Academy of SciencesBeijing 100190China College of Civil and Transportation Engineering Shenzhen UniversityShenzhen 518060China Key Laboratory of Coastal Urban resilient Infrastructures(Shenzhen University) Ministry of EducationShenzhen 518060China Key Laboratory of Eco Planning&Green Building(Tsinghua University) Ministry of EducationBeijing 100084China

Sandstorm,which injects generous newly emerging microbes into the atmosphere covering cities,adversely affects the air quality in built ***,few studies have examined the change of airborne bacteria during severe sandstorm *** this work,we analyzed the airborne bacteria during one of the strongest sandstorms in East Asia onMarch 15th,2021,which affected large areas of China and *** characteristics of the sandstorm were compared with those of the subsequent clean and haze *** composition of the bacterial community of air samples was investigated using quantitative polymerase chain reaction(qPCR)and high-throughput sequencing *** the sandstorm,the particulate matter(PM)concentration and bacterial richnesswere extremely high(PM2.5:207μg/m3;PM10:1630μg/m3;5700 amplicon sequence variants/m3).In addition,the sandstorm brought 10 pathogenic bacterial genera to the atmosphere,posing a grave hazard to human *** the sandstorm subsided,small bioaerosols(0.65–1.1μm)with a similar bacterial community remained suspended in the atmosphere,bringing possible long-lasting health risks.

关键词： Airborne bacteria Sandstorm Bioaerosol Haze Pathogen

DeepSecE:A Deep-Learning-Based Framework for Multiclass Prediction of Secreted Proteins in Gram-Negative Bacteria

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Research 2024年第3期2023卷 243-257页

作者： Yumeng Zhang Jiahao Guan Chen Li Zhikang Wang Zixin Deng Robin BGasser Jiangning Song Hong-Yu Ou state Key Laboratory of Microbial Metabolism Joint International Laboratory on Metabolic&Developmental SciencesSchool of Life Sciences and BiotechnologyShanghai Jiao Tong UniversityShanghai 200240China Shanghai Key Laboratory of Veterinary Biotechnology Shanghai Jiao Tong UniversityShanghai 200240China Biomedicine Discovery institute and Department of Biochemistry and Molecular Biology Monash UniversityMelbourneViC 3800Australia Monash Data futures institute Monash UniversityMelbourneViC 3800Australia Melbourne Veterinary School Faculty of ScienceThe University of MelbourneParkvilleVIC 3010Australia.

Proteins secreted by Gram-negative bacteria are tightly linked to the virulence and adaptability of these microbes to environmental *** identification of such secreted proteins can facilitate the investigations of infections and diseases caused by these bacterial ***,current bioinformatic methods for predicting bacterial secreted substrate proteins have limited computational efficiency and application scope on a genome-wide ***,we propose a novel deep-learning-based framework—DeepSecE—for the simultaneous inference of multiple distinct groups of secreted proteins produced by Gram-negative *** remarkably improves their classification from nonsecreted proteins using a pretrained protein language model and transformer,achieving a macro-average accuracy of 0.883 on 5-fold *** benchmarking suggests that DeepSecE achieves competitive performance with the state-of-the-art binary predictors specialized for individual types of secreted *** attention mechanism corroborates salient patterns and motifs at the N or C termini of the protein *** this pipeline,we further investigate the genome-wide prediction of novel secreted proteins and their taxonomic distribution across~1,000 Gram-negative bacterial *** present analysis demonstrates that DeepSecE has major potential for the discovery of disease-associated secreted proteins in a diverse range of Gram-negative *** online web server of DeepSecE is also publicly available to predict and explore various secreted substrate proteins via the input of bacterial genome sequences.

关键词： Deep server competitive

Smart contract applications in the built environment: How prepared are Nigerian construction stakeholders?

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Engineering Management 2024年第1期11卷 50-61页

作者： Andrew EBEKOZIEN Clinton AIGBAVBOA Samuel Adeniyi ADEKUNLE Mohamad Shaharudin SAMSURIJAN John ALIU Bernard Martins ARTHUR-AIDOO Godpower Chinyeru AMADI Department of Construction Management and Quantity Surveying University of JohannesburgJohannesburg 2006South Africa School of Social Sciences Universiti Sains MalaysiaGelugor11800 USM PenangMalaysia Department of Quantity Surveying Auchi PolytechnicAuchiNigeria institute for resilient Infrastructure Systems College of EngineeringUniversity of GeorgiaAthensGA 30602USA Department of Building Technology Faculty of Built EnvironmentAccra Technical UniversityAccraGhana Nigerian institute of Management Port HarcourtNigeria

Studies have demonstrated that advanced technology,such as smart contract applications,can enhance both pre-and post-contract administration within the built environment *** contract technology,exemplifying blockchain technologies,has the potential to improve transparency,trust,and the security of data transactions within this ***,there is a dearth of academic literature concerning smart contract applications within the construction industries of developing countries,with a specific focus on ***,this study seeks to explore the relevance of smart contract technology and address the challenges impeding its adoption,offering strategies to mitigate the obstacles faced by smart contract *** investigate the stakeholders,this research conducted 14 virtual interview sessions to achieve data *** interviewees encompassed project management practitioners,senior management personnel from construction companies,experts in construction dispute resolution,professionals in construction software,and representatives from government construction *** data obtained from these interviews underwent thorough analysis employing a thematic *** study duly recognizes the significance of smart contract applications within the *** the 12 identified barriers,issues such as identity theft and data leakage,communication and synchronization challenges,high computational expenses,lack of driving impetus,excessive electricity consumption,intricate implementation processes,absence of a universally applicable legal framework,and the lack of a localized legal framework were recurrent impediments affecting the adoption of smart contract applications within the *** study also delves into comprehensive measures to mitigate these *** conclusion,this study critically evaluates the relevance of smart contract applications within the built environment,with a specific focus on promoting their *** may serve

关键词： built environment industry digitalization Nigeria smart contract technological revolution

Candidate genes conferring ethylene-response in cultivated peanuts determined by BSA-seq and fine-mapping

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The Crop Journal 2024年第3期12卷 856-865页

作者： Yanyan Tang Zhong Huang Shaohui Xu Wenjie Zhou Jianjun Ren Fuxin Yu Jingshan Wang Wujun Ma Lixian Qiao College of Agronomy Qingdao Agricultural UniversityQingdao 266109ShandongChina Murdoch University Food Futures InstitutePerthWA 6150Australia The Characteristic Laboratory of Crop Germplasm Innovation and Application Provincial Department of EducationCollege of AgronomyQingdao Agricultural UniversityQingdao 266109ShandongChina Academy of Dongying Efficient Agricultural Technology and Industry on Saline and Alkaline Land in Collaboration with Qingdao Agricultural University Dongying 257347ShandongChina

Ethylene plays essential roles in plant growth,development and stress *** ethylene signaling pathway and molecular mechanism have been studied extensively in Arabidopsis and rice but limited in ***,we established a sand-culture method to screen pingyangmycin mutagenized peanut lines based on their specific response to ethylene(“triple response”).An ethylene-insensitive mutant,inhibition of peanut hypocotyl elongation 1(iph1),was identified that showed reduced sensitivity to ethylene in both hypocotyl elongation and root *** bulked segregant analysis sequencing,a major gene related to iph1,named AhIPH1,was preliminarily mapped at the chromosome Arahy.01,and further narrowed to a 450-kb genomic region through substitution mapping strategy.A total of 7014 genes were differentially expressed among the ACC treatment through RNA-seq analysis,of which only the Arahy.5BLU0Q gene in the candidate mapping interval was differentially expressed between WT and mutant *** sequence variations,functional annotation and transcriptome analysis revealed that a predicated gene,Arahy.5BLU0Q,encoding SNF1 protein kinase,may be the candidate gene for *** gene contained two single-nucleotide polymorphisms at promoter region and was more highly expressed in iph1 than *** findings reveal a novel ethylene-responsive gene,which provides a theoretical foundation and new genetic resources for the mechanism of ethylene signaling in peanuts.

关键词： Ethylene-insensitive Hypocotyl elongation AhIPH1 Candidate gene Genetic resources

Efficient slope reliability analysis under soil spatial variability using maximum entropy distribution with fractional moments

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of Rock Mechanics and Geotechnical Engineering 2024年第4期16卷 1140-1152页

作者： Chengxin Feng Marcos A.Valdebenito Marcin Chwała Kang Liao Matteo Broggi Michael Beer institute for Risk and Reliability Leibniz University HannoverCallinstr.34Hannover30167Germany Chair for Reliability Engineering TU Dortmund UniversityLeonhard-Euler-Str.5Dortmund44227Germany Faculty of Civil Engineering Wrocƚaw University of Science and TechnologyWrocƚawPoland Faculty of Geosciences and Environmental Engineering Southwest Jiaotong UniversityChengdu610031China University of Liverpool Institute for Risk and UncertaintyPeach StreetLiverpoolL69 7ZFUnited Kingdom International Joint Research Center for resilient Infrastructure & International Joint Research Center for Engineering Reliability and Stochastic Mechanics Tongji UniversityShanghaiChina

Spatial variability of soil properties imposes a challenge for practical analysis and design in geotechnical *** latter is particularly true for slope stability assessment,where the effects of uncertainty are synthesized in the so-called probability of *** probability quantifies the reliability of a slope and its numerical calculation is usually quite involved from a numerical *** view of this issue,this paper proposes an approach for failure probability assessment based on Latinized partially stratified sampling and maximum entropy distribution with fractional *** spatial variability of geotechnical properties is represented by means of random fields and the Karhunen-Loève ***,failure probabilities are estimated employing maximum entropy distribution with fractional *** application of the proposed approach is examined with two examples:a case study of an undrained slope and a case study of a slope with cross-correlated random fields of strength parameters under a drained *** results show that the proposed approach has excellent accuracy and high efficiency,and it can be applied straightforwardly to similar geotechnical engineering problems.

关键词： Slope Random field Reliability analysis Maximum entropy distribution Latinized partial stratified sampling

Physical activity and amyloid beta in middle-aged and older adults:A systematic review and meta-analysis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Sport and Health Science 2024年第2期13卷 133-144页

作者： María Rodriguez-Ayllon Patricio Solis-Urra Cristina Arroyo-ávila Miriam álvarez-Ortega Pablo Molina-García Cristina Molina-Hidalgo Manuel Gómez-Río Belinda Brown Kirk I.Erickson Irene Esteban-Cornejo Department of Epidemiology Erasmus University Medical Center RotterdamRotterdamGD 3015the Netherlands Department of Physical Education and Sports Faculty of Sport SciencesSport and Health University Research Institute(iMUDS)University of GranadaGranada 18071Spain Faculty of Education and Social Sciences Universidad Andres BelloVina del Mar 2531015Chile Department of Nuclear Medicine Virgen de las Nieves University HospitalInstitute of Biosanitary Research of Granada(IBS)Granada 18014Spain Physical Medicine and Rehabilitation Service Virgen de las Nieves University HospitalInstitute of Biosanitary Research of Granada(IBS)Granada 18014Spain Department of Psychology University of PittsburghPittsburghPA 15260USA Centre for Healthy Ageing Health Futures InstituteMurdoch UniversityMurdochWA 6150Australia School of Medical and Health Sciences Edith Cowan UniversityJoondalupWA 6027Australia Advent Health Research institute Neuroscience Institute OrlandoOrlandoFL 32803USA Physiopathology of Obesity and Nutrition Research Center(CIBERobn) Institute of Health Carlos Ⅲ(ISCⅢ)Madrid 28029Spain

Background:One of the pathological hallmarks distinguishing Alzheimer’s disease from other dementias is the accumulation of amyloid beta(Aβ).Higher physical activity is associated with decreased dementia risk,and one potential path could be through Aβlevels *** aimed to explore the relationship between physical activity and Aβin middle-aged and older ***:A systematic search of PubMed,Web of Science,PsycINFO,Cochrane Central Register of Controlled Trials,and SPORTDiscus was performed from inception to April 28,*** were eligible if they included physical activity and Aβdata in adults aged 45 years or ***-level metaanalyses of intervention and observational studies were performed to examine the role of physical activity in modulating Aβ***:In total,37 articles were included(8 randomized controlled trials,3 non-randomized controlled trials,4 prospective longitudinal studies,and 22 cross-sectional studies).The overall effect size of physical activity interventions on changes in blood Aβwas medium(pooled standardized mean difference=-0.69,95%confidence interval(95%CI):-1.41 to 0.03;I^(2)=74.6%).However,these results were not statistically significant,and there were not enough studies to explore the effects of physical activity on cerebrospinal fluid(CSF)and brain Aβ.Data from observational studies were examined based on measurements of Aβin the brain using positron emission tomography scans,CSF,and *** physical activity was positively associated with Aβonly in the CSF(Estimate r=0.12;95%CI:0.05-0.18;I^(2)=38.00%).Conclusion:Physical activity might moderately reduce blood Aβin middle-aged and older ***,results were only near statistical significance and might be interpreted with caution given the methodological limitations observed in some of the included *** observational studies,higher levels of physical activity were positively associated with Aβonly in ***,further research is needed t

关键词： Aging Cognitive impairment Dementia Exercise PET

High-entropy catalysts for electrochemical water-electrolysis of hydrogen evolution and oxygen evolution reactions

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Frontiers in Energy 2024年第3期18卷 265-290页

作者： Simiao SHA Riyue GE Ying LI Julie M.CAIRNEY Rongkun ZHENG Sean LI Bin LIU Jiujun ZHANG Wenxian LI School of Materials Science and Engineering Shanghai UniversityShanghai 200444China School of Chemical and Environmental Engineering Anhui Polytechnic UniversityWuhu 241000China Australian Centre for Microscopy and Microanalysis School of AerospaceMechanical and Mechatronic EngineeringThe University of SydneySydney NSW 2006Australia School of Physics The University of SydneySydney NSW 2006Australia School of Materials Science and Engineering UNSW Materials&Manufacturing Futures InstituteUniversity of New South WalesSydney NSW 2052Australia College of Materials Science and Engineering Fuzhou UniversityFuzhou 350108China

High entropy materials (HEMs) have developed rapidly in the field of electrocatalytic water-electrolysis for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) due to their unique properties. In particular, HEM catalysts are composed of many elements. Therefore, they have rich active sites and enhanced entropy stability relative to single atoms. In this paper, the preparation strategies and applications of HEM catalysts in electrochemical water-electrolysis are reviewed to explore the stabilization of HEMs and their catalytic mechanisms as well as their application in support green hydrogen production. First, the concept and four characteristics of HEMs are introduced based on entropy and composition. Then, synthetic strategies of HEM catalysts are systematically reviewed in terms of the categories of bottom-up and top-down. The application of HEMs as catalysts for electrochemical water-electrolysis in recent years is emphatically discussed, and the mechanisms of improving the performance of electrocatalysis is expounded by combining theoretical calculation technology and ex-situ/in situ characterization experiments. Finally, the application prospect of HEMs is proposed to conquer the challenges in HEM catalyst fabrications and applications.

关键词： high-entropy electrocatalysis synthetic methods water-electrolysis hydrogen and oxygen evolutions