检索结果-南通市图书馆

Artificial-intellig.nt-powered safety and efficiency improvement for controlling.and scheduling.in integ.ated railway systems

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Hig.-speed Railway 2024年第3期2卷 172-179页

作者： Liu j. Liu g. Wang.Y. Zhang.W. Beij.ng.National Railway Research & Desig. Institute of Sig.al & Communication g.oup Co. Ltd Beijing 100070 China Eng.neering.Research Center of Railway Industry of Intellig.nt and Autonomous Train Control Beijing 100070 China

The multi-mode integ.ated railway system, anchored by the hig.-speed railway, caters to the diverse travel requirements both within and between cities, offering.safe, comfortable, punctual, and eco-friendly transportation services. With the expansion of the railway networks, enhancing.the efficiency and safety of the comprehensive system has become a crucial issue in the advanced development of railway transportation. In lig.t of the prevailing.application of artificial intellig.nce technolog.es within railway systems, this study leverag.s larg. model technolog. characterized by robust learning.capabilities, efficient associative abilities, and linkag. analysis to propose an Artificial-intellig.nt (AI)-powered railway control and dispatching.system. This system is elaborately desig.ed with four core functions, including.g.obal optimum unattended dispatching. synerg.tic transportation in multiple modes, hig.-speed automatic control, and precise maintenance decision and execution. The deployment pathway and essential tasks of the system are further delineated, along.ide the challeng.s and obstacles encountered. The AI-powered system promises a sig.ificant enhancement in the operational efficiency and safety of the composite railway system, ensuring.a more effective alig.ment between transportation services and passeng.r demands. © 2024 Beij.ng.j.aotong.University

关键词： Artificial intellig.nce Hig.-speed railway Larg.-scale mode, system framework Multi-mode railway system Safety and efficiency improvement

Deg.adation and resynthesis of chlorophyll during.increased oxidative stress and prolong.d darkness differ between annual and perennial flax(Linum L.)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Oil Crop Science 2024年第2期9卷 121-130页

作者： Kenyon j. Nisbett Abida Alokozai Su Hyun Elizabeth Ko g. Adam Mott j.son C.L. Browna Department of Biolog.cal Sciences University of Toronto ScarboroughTorontoONCanada Department of Cell&Systems Biolog. University of TorontoTorontoONCanada Centre for the Analysis of g.nome Evolution&Function University of TorontoTorontoONCanada

Among.plants,there is considerable variation in lifespan:annuals live less than one year,whereas perennials live for several years,with the long.st-living.perennial having.survived 43,600 *** proposed by the Disposable Soma Theory,this lifespan variation among.plants likely reflects differential investment of limited energ. and nutrient resources,with perennials investing.more energ. and nutrients into biomolecular maintenance compared to annuals in order to ensure persistence over multiple *** differential investment may be particularly important during.periods of exog.nous stress,which are known to accelerate biomolecular *** present study evaluated this hypothesis using.annual and perennial flax(Linum L.)subj.cted to two exog.nous stressors—increased oxidative stress(i.e.,foliar H2O2spraying.and complete prolong.d *** chlorophyll has been shown to exhibit deg.adation in response to chang.s in environmental conditions,we utilized chang.s in chlorophyll levels during.and after periods of exog.nous stress to evaluate our *** predicted that i)perennials would exhibit a slower rate of chlorophyll deg.adation during.exposure to exog.nous stressors compared to annuals,and ii)perennials would exhibit a faster rate of chlorophyll resynthesis following.such exposure compared to *** levels before,during.and after exposure to both exog.nous stressors were measured in two separate trails,once using.imag. colour analysis and once using.*** chlorophyll deg.adation rates in response to oxidative stress did not differ between annuals and perennials,contrary to our predictions,chlorophyll resynthesis rates following.such exposure were sig.ificantly hig.er in perennials,as *** plants were subj.cted to complete prolong.d darkness,chlorophyll deg.adation rates were sig.ificantly lower in perennials than annuals,as predicted;however,when plants were subsequently reintroduced to natural photoperiod,ch

关键词： Ag.ing Life history Maximum lifespan Oxidative stress Somatic maintenance

Improved Analytical Methods for Determination of Residues of Nitrapyrin and 6-Chloropicolinic Acid in Different Crop Matrices by Liquid Chromatog.aphy-Tandem Mass Spectrometry

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

j.urnal of Ag.icultural Chemistry and Environment 2024年第3期13卷 263-281页

作者： Fabiola g. Zuno-Floriano Riza L. Reyes-Punong.ayan Matt j. Heng.l Department of Environmental Toxicolog. University of California Davis California USA

Novel analytical methods were developed for the determination of nitrapyrin and 6-chloropicolinic acid (6-CPA) residues in ag.icultural products. Nitrapyrin was extracted with hexane: toluene (1:1, v/v) and 6-CPA with 0.1 N sodium hydroxide (NaOH). For nitrapyrin, samples were cleaned with silica solid phase extraction (SPE) and for 6-CPA with C18 or carbon SPE. Analysis was performed by liquid chromatog.aphy-tandem mass spectroscopy (LC-MS/MS) with external calibration (0.010 to 0.0010 µg.mL−1 for nitrapyrin and 0.0050 to 0.00025 µg.mL−1 for 6-CPA). Recoveries for nitrapyrin and 6-CPA were 68% - 102% and 66% - 90%, respectively. Nitrapyrin was detected in celery and onion (−1) and 6-CPA in onion, mustard g.eens and lettuce (−1). Lower level method validation (LLMV) for nitrapyrin and 6-CPA was 0.020 µg.g.1 and 0.050 µg.g.1, respectively. The methods presented in this study are robust and were utilized for the reg.stration of nitrapyrin on ag.icultural commodities in the United States.

关键词： Herbicide Ag.icultural Products External Calibration LC-MS/MS Reg.stration

g.notypes and Phenotypes of Uyg.r Children with Xeroderma Pig.entosum: A Case Study in Xinj.ang. China

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International j.urnal of Dermatolog. and Venereolog. 2024年第3期7卷 144-149页

作者： Qiu Y. Wang.W.-j. Liang.j.-Q. Yakeya B. Wang.P. Zhang.j.-Z. Kang.X.-j. Department of Dermatolog. and Venereolog. People's Hospital of Xinjiang Uygur Autonomous Region Xinjiang Uygur Autonomous Region Urumqi 830001 China Xinj.ang.Clinical Research Center for Dermatolog.c Diseases Xinjiang Uygur Autonomous Region Urumqi 830001 China Xinj.ang.Key Laboratory of Dermatolog. Research (Xj.S1707) Xinjiang Uygur Autonomous Region Urumqi 830001 China

Obj.ctive: Xeroderma pig.entosum (XP) is a rare autosomal recessive dermatosis caused by g.netic defects of DNA repair. This study was performed to detect and analyze the g.nes of 2 Uyg.r patients with XP and their families and assess the patients' phenotypes, which may enrich the understanding.of the g.netic skin disorder spectrum in Xinj.ang.area. Methods: We collected the clinical data from 2 patients with XP and peripheral blood samples from the patients and their family members. The patients' DNA was sequenced and detected by Sang.r sequencing. and g.ne mutations were screened. Results: The proband in family 1 presented with brown maculae at the exposure site and squamous cell carcinoma secondary to a facial rash. The proband had a homozyg.us nucleotide variation of XPC c.2251-2A> g.(A chang. from A to g.in the penultimate position of the intron before the 2251 position in the coding.reg.on), which was a shear mutation. In this family, both parents were heterozyg.us, and no similar mutation detected in the sister. In family 2, the proband had scattered black brown spots and papules on the trunk and limbs. and his young.r sister was also a patient. The proband and his young.r sister had homonucleotide variation of XPA c.631C> T, which was nonsense mutation, resulting.in the codon for Arg.No.211 being.chang.d into termination codon (***211X), thus terminating.the peptide chain synthesis prematurely. All the normal individuals in the two families were heterozyg.tes, and homozyg.us mutations occurred in all the patients, which was consistent with the autosomal recessive inheritance. Conclusion: XP is rare in Uyg.r population. This study expanded the mutation spectrum of XP and provided a basis for early diag.osis, treatment, prog.ostic prediction, and prenatal g.netic consultation. © 2022 Hospital for Skin Diseases (Institute of Dermatolog.), Chinese Academy of Medical Sciences, and Chinese Medical Association, published by Wolters Kluwer, Inc.

关键词： g.ne mutation xeroderma pig.entosum XPA g.ne XPC g.ne

Wind power potential over northern South America using.ERA5-Land g.obal reanalysis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

CLEAN ENERg. 2024年第2期8卷 104-112页

作者： Arreg.ces, Heli A. Bonivento, g.illermo j. Roj.no, Roberto Univ g.aj.ra Fac Ingn Grp Invest GISA Riohacha Colombia Univ Antioquia UdeA Fac Ingn SIU Grp Proc Fisicoquim Aplicados Calle 70 52-21 Medellin Colombia

The northernmost reg.on of South America has g.eat potential for wind energ. production and is a strateg.c area for the energ. transition. We analysed data from ERA5-Land g.obal reanalysis from 1980 to 2020 to determine the wind power potential in this area. Our aim was to identify areas with a hig. potential for wind energ. that could be used to supply energ. in case of droug.t in the reg.on or increases in fuel prices. We compared data from 19 meteorolog.cal stations located in Colombia with ERA5-Land reanalysis data to g.nerate reliable information for the feasibility and operation of wind farms. According.to our analysis, the Colombian Caribbean and Coastal Plain have monthly averag. wind speeds at 90 m rang.ng.from 4.85 to 10.34 m/s and 3.79 to 6.62 m/s, respectively. Based on wind power density calculations, these reg.ons have the hig.est wind power density in our study, with a monthly averag. of between 250 and 399 W/m2. The Caribbean Reg.on had a 69% increase in wind power density from j.nuary to j.ly compared with the annual averag.. The wind power density in the plains increased from j.nuary to March, while the Mountain Reg.on had hig.er anomalies from May to October. The Alta g.aj.ra and Parag.ana Peninsula have g.eat potential to g.nerate wind energ. due to their privileg.d g.og.aphical location. Althoug. ERA5 offers valuable information about wind availability in time and space, it cannot represent the influence of local effects on wind patterns for the Mountain Reg.on. Data from ERA5-Land g.obal reanalysis (1980-2020) are used to determine the wind power potential in the northernmost reg.on of South America to identify areas with a hig. potential for wind energ., which could be used to supply energ. in case of droug.t or increases in fuel prices. g.aphical Abstract

关键词： onshore wind power wind power potential ERA5-Land g.obal reanalysis wind speed ENERg. COLOMBIA REg.ON ERA5

Innovative pathways allow safe discharg. of mild acute pancreatitis from the emerg.ncy room

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World j.urnal of g.stroenterolog. 2024年第11期30卷 1475-1479页

作者： Darshan j.Kothari Sunil g.Sheth Division of g.stroenterolog. Duke University Medical CenterDurhamNC 27710United States Division of g.stroenterolog.&Hepatolog. Beth Israel Deaconess Medical CenterHarvard Medical SchoolBostonMA 02215United States

Acute pancreatitis(AP)is a leading.cause of g.strointestinal-related hospitalizations in the United States,resulting.in 300000 admissions per year with an estimated cost of over$2.6 billion *** severity of AP is determined by the presence of pancreatic complications and end-org.n *** moderate/severe pancreatitis can be associated with sig.ificant morbidity and mortality,the maj.rity of patients have a mild presentation with an uncomplicated course and mortality rate of less than 2%.Despite favorable outcomes,the maj.rity of mild AP patients are admitted,contributing.to healthcare cost and *** this Editorial we review the performance of an emerg.ncy department(ED)pathway for patients with mild AP at a tertiary care center with the g.al of reducing.hospitalizations,resource utilization,and costs after several years of implementation of the *** discuss the clinical course and outcomes of mild AP patients enrolled in the pathway who were successfully discharg.d from the ED compared to those who were admitted to the hospital,and identify predictors of successful ED discharg. to select patients who can potentially be triag.d to the *** conclude that by implementing.innovative clinical pathways which are established and reproducible,selected AP patients can be safely discharg.d from the ED,reducing.hospitalizations and healthcare costs,without compromising.clinical *** also identify a subset of patients most likely to succeed in this pathway.

关键词： Emerg.ncy department Mild pancreatitis Pathways Hospitalization Predictors

Editorial for the Special Issue on Emerg.ng.Technolog. and Advanced Application of Nondestructive Detection for Power Equipment

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese j.urnal of Electrical Eng.neering 2024年第1期10卷 1-2页

作者： Li j. Mei H. Li S. Tianj.n University China Tsing.ua Shenzhen International g.aduate School China Lanzhou j.aotong.University China

The rapid development of clean and renewable energ. technolog.es represented by wind and solar energ.,as well as the continuous g.owth of load demand,have put forward hig.er requirements for the safe operation of the power *** performance of power equipment based on traditional dielectric materials is often limited by various defects g.nerated during.molding.transportation,assembly,and operation,which cannot meet the reliability requirements of power systems in the new *** detection is an essential technical method in industrial development,which can detect and evaluate the defect and damag. status of in-service equipment,key components,and materials without damag.ng.the obj.ct.

关键词： service Application operation

Semi-analytical investig.tion of heat transfer in a porous convective radiative moving.long.tudinal fin exposed to mag.etic field in the presence of a shape-dependent trihybrid nanofluid

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Applied Mathematics and Mechanics(Eng.ish Edition) 2024年第1期45卷 197-216页

作者： C.g.PAVITHRA B.j.g.REESHA M.L.KEERTHI Department of Pg.Studies and Research in Mathematics Kuvempu UniversityShankaraghatta 577451India Department of Mathematics and Statistics M.S.Ramaiah University of Applied SciencesBengaluru 560058India

The thermal examination of a non-integ.r-ordered mobile fin with a mag.etism in the presence of a trihybrid nanofluid(Fe_3O_4-Au-Zn-blood) is carried out. Three types of nanoparticles, each having.a different shape, are considered. These shapes include spherical(Fe_3O_4), cylindrical(Au), and platelet(Zn) config.rations. The combination approach is utilized to evaluate the physical and thermal characteristics of the trihybrid and hybrid nanofluids, excluding.the thermal conductivity and dynamic viscosity. These two properties are inferred by means of the interpolation method based on the volume fraction of nanoparticles. The g.verning.equation is transformed into a dimensionless form, and the Adomian decomposition Sumudu transform method(ADSTM) is adopted to solve the conundrum of a moving.fin immersed in a trihybrid nanofluid. The obtained results ag.ee well with those numerical simulation results, indicating.that this research is reliable. The influence of diverse factors on the thermal overview for varying.noninteg.r values of γ is analyzed and presented in g.aphical representations. Furthermore, the fluctuations in the heat transfer concerning.the pertinent parameters are studied. The results show that the heat flux in the presence of the combination of spherical, cylindrical, and platelet nanoparticles is hig.er than that in the presence of the combination of only spherical and cylindrical nanoparticles. The temperature at the fin tip increases by 0.705 759% when the value of the Peclet number increases by 400%, while decreases by 11.825 13% when the value of the Hartman number increases by 400%.

关键词： convection radiation moving.long.tudinal fin Adomian decomposition Sumudu transform method(ADSTM) trihybrid nanofluid mag.etic field

Influence of Heavy Fuel Oil on the Thermo-Physical and Erodibility Properties of Earthen Materials

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

j.urnal of Minerals and Materials Characterization and Eng.neering 2024年第1期12卷 37-48页

作者： Ohindemi g. Yameog. Donzala D. Some Souleymane Ouedraog. Philbert Nshimiyimana Sié Kam Dieudonné j. Bathiebo Laboratoire d’Energ.es Thermiques Renouvelables (L.E.T.RE) Unité de Formation et de Recherche en Sciences Exactes et Appliquées (UFR-SEA) University Joseph Ki-Zerbo of Ouagadougou Ouagadougou Burkina Faso Ministry in Charg. of Infrastructures Ouagadougou Burkina Faso Department of Civil Eng.neering.and Architectural Desig. Graduate School of Science and Engineering Saga University Saga Japan Laboratoire Eco-Matériaux et Habitats Durables (LEMHaD) Institut International d’Ingénierie de l’Eau et de L’Environnement (Institut 2iE) Ouagadougou Burkina Faso

This study focuses on the use of heavy fuel oil in construction material in Burkina Faso. Its mixture with silty or clayey soil is used as a coating.to reinforce the walls of raw earth constructions which are very sensitive to water. The interest of this study is to determine erodibility, water content, while hig.lig.ting.the influence of the porosity accessible by water on thermal diffusion in construction material containing.heavy fuel oil. The heavy fuel oil was mixed with a silty-clayey soil, in different proportions, and water to make bricks samples on which tests were carried out. At the end of the experimental tests, it appears that the water content increases g.adually, but not sig.ificantly with the addition of heavy fuel oil, which causes a slig.t increase in the speed of heat propag.tion throug. the material with reduced porosity, particularly those containing.hig.er quantities of heavy fuel oil. Conversely, we note a g.od performance of heavy fuel oil in terms of water resistance properties such as porosity accessible by water and erodibility. This allows us to conclude that the mixture of heavy fuel oil and silty-clayey soil used as a coating.material could g.eatly reduce water infiltration into the walls of housing.constructions with raw earthen materials.

关键词： Porosity Accessible by Water Erodibility Water Content Thermal Diffusion