检索结果-南通市图书馆

维普期刊数据库

Predictive modeling for wine authenticity using a machine learning approach

在线全文

学校读者我要写书评

暂无评论

Artificial Intelligence in Agriculture 2021年第1期5卷 157-162页

作者： Nattane Luíza da Costa Leonardo A.Valentin Inar Alves castro Rommel Melgaço Barbos Instituto de Informática Universidade Federal de GoiásGoiânia-GoBrazil Informatics Nucleo Goiano Federal Institute of EducationScience and TechnologyCampus UrutaíRodovia Geraldo Silva Nascimentokm 2.5Zona RuralBloco de InformáticaUrutaíGOBrazil LADAF Department of Food and Experimental NutritionFaculty of Pharmaceutical SciencesUniversity of São PauloAv.Lineu Prestes580B1405508-900 São PauloBrazil

The purpose of this paper is to classify wines from 4 different countries in South *** class of wines is formed by samples considered by experts as representatives of the following commercial categories:“Argentinean Malbec(AM)”,“Brazilian Merlot(BM)”,“Uruguayan Tannat(UT)”and“Chilean Carménère(CC)”.The 83 samples collected were analyzed according to their composition of volatiles,semi-volatiles and phenolic *** built a decision system for classification based on support vector machines(SVM),along with Correlation-based Feature selection(CFS),and RandomForest Importance(RFI),whichmeasures the relative importance of the input ***,we use CFS to select a subset of variables among 190 chemical *** chemicals were selected as correlated to the category and uncorrelated with each ***,these chemical compounds were organized according to the importance ranking given by the RFI and classified with *** study clearly indicated that SVMin combination with feature selection methodswas able to identify the most important chemicals to classify the wine *** the compounds identified in the wine samples,the variable subset defined by the feature selection methods,which were catechin,gallic,octanoic acid,myricetin,caffeic,isobutanol,resveratrol,kaempferol,and ORAC,were able to achieve an accuracy of 93.97%in classifying the commercial categories.

关键词： Wine classification Support vector machines Feature selection South American wines Machine learning

First histopathological study in kidneys of rodents naturally infected with Leptospira pathogenic species from Yucatan, Mexico

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Medicine 2016年第2期9卷 140-142页

作者： Marco Torres-castro Leonardo Guillermo-Cordero Silvia Hernández-Betancourt Edwin Gutiérrez-Ruíz Piedad Agudelo-Flórez Ronald Peláez-Sánchez Jorge Zavala-castro Fernando I.Puerto Centro de Investigaciones Regionales ‘Dr.Hideyo Noguchi' Universidad Autónoma de Yucatán Campus de Ciencias Biológicas y Agropecuarias Universidad Autónoma de Yucatán Facultad de Medicina Universidad CES

Objective: To report the renal histological lesions in synanthropic rodents, Mus musculus and Rattus rattus, naturally infected with Leptospira spp., captured in a rural community in Yucatan, Mexico. Methods: Kidney samples of synanthropic rodents were collected from a rural community in Yucatan, Mexico. Polymerase chain reaction was used to detect Leptospira spp. infection. Tissue kidney was fixed in 10% buffered formalin, processed according to the usual techniques for paraffin inclusion, cut and stained with hematoxylin and eosin, and examined using a conventional electronic microscope. Results: A total of 187 rodents were captured. Nine individuals(4.8%) were positive for Leptospira spp. in the molecular analysis. All renal lesions observed in the histopathological study had been reported previously for Leptospira spp. infection. Conclusions: The histopathological lesions are present in the kidneys, plus the results of the polymerase chain reaction confirm that these rodents are true carriers of Leptospira spp.

关键词： Leptospira spp. Renal histopathological lesions Mus musculus Rattus rattus

Investigating the impact of poverty on colonization and infection with drugresistant organisms in humans:a systematic review

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Infectious Diseases of Poverty 2018年第1期7卷 750-760页

作者： Vivian Alividza Victor Mariano Raheelah Ahmad Esmita Charani Timothy MRawson Alison HHolmes Enrique castro-anchez NIHR Health Protection Research Unit in Healthcare Associated Infection and Antimicrobial Resistance Imperial College LondonLondonUK Health Group Management DepartmentImperial College Business SchoolExhibition RoadLondonUK

Background:Poverty increases the risk of contracting infectious diseases and therefore exposure to *** there is lacking evidence on the relationship between income and non-income dimensions of poverty and antimicrobial *** such relationship would strengthen antimicrobial stewardship ***:A systematic review was conducted following Preferred Reporting Items for Systematic Reviews and Meta-Analyses(PRISMA)***,Ovid,MEDLINE,EMBASE,Scopus,CINAHL,PsychINFO,EBSCO,HMIC,and Web of Science databases were searched in October *** and retrospective studies reporting on income or non-income dimensions of poverty and their influence on colonisation or infection with antimicrobial-resistant organisms were *** quality was assessed with the Integrated quality criteria for review of multiple study designs(ICROMS)***:Nineteen articles were *** and homelessness were associated with antimicrobial resistance in community and hospital *** high-income countries,low income was associated with Streptococcus pneumoniae and Acinetobacter baumannii resistance and a seven-fold higher infection *** low-income countries the findings on this relation were *** of education was linked to resistant *** and Escherichia *** papers explored the relation between water and sanitation and antimicrobial resistance in low-income ***:Despite methodological limitations,the results suggest that addressing social determinants of poverty worldwide remains a crucial yet neglected step towards preventing antimicrobial resistance.

关键词： Poverty Antimicrobial stewardship Drug resistance

Comparison of lipid extraction methods for the microalgae Acutodesmus obliquus

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 Journal of Agricultural and Biological Engineering 2018年第5期11卷 211-217页

作者： Diana Ximena Hurtado Claudia Lorena Garzón-castro Jhon Cortés-Romero Edisson Tello Camacho Bioprospecting and CAPSAB Research Groups Faculty of EngineeringUniversidad de La SabanaCundinamarca 53753Colombia Biosciences Doctoral Program Faculty of EngineeringUniversidad de La SabanaCundinamarca 53753Colombia Department of Electrical and Electronic Engineering Universidad Nacional de ColombiaBogotá53753Colombia

Microalgae are widely used in the pharmaceutical and energy industries,therefore the conditions for their cultivation and extraction methods play an important role in the profiling and acquisition of *** efficiency of lipid extraction from microalgae has attracted great interest from industry because of the wide variety of lipids and amounts that can be *** obliquus(Scenedesmus obliquus UTEX 393)was used in this *** was cultivated in Bold 3N medium modified with 75%nitrogen at 25℃,pH 6.8,125 r/min and a photoperiod of 18/6 h and illuminated with white light provided by a Light-Emitting Diode Surface Mount Device extensions(LED SMD)with an intensity of 1200μE/(m^(2)·s).The cells were stained with the Red Nile(RN)technique to indicate lipid *** extraction methods were compared,classical,microwave(MW),Soxhlet,and ultrasound(US),using the same solvent proportions(hexane:chloroform:methanol=1:2:3).All samples were analyzed with Fourier Transform Infrared Spectroscopy(FTIR)and Gas Chromatography coupled to Mass Spectrometry(GC-MS).The results showed:1)lipid production detected by RN was consistent with microalgal growth;2)the MW technique was the best extraction method,according to the statistical analysis through Randomized Complete Block(RCB)design and performance of 4.6%;and 3)the presence of saturated and unsaturated acids was indicated by FTIR ***-MS was able to identify palmitic and linoleic acids as the likely major constituents of the sample.

关键词： Acutodesmus obliquus lipid extraction trans-esterification Red Nile(RN)

Microfabricated polymer-metal biosensors for multifarious data collection from electrogenic cellular models

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Microsystems & Nanoengineering 2023年第2期9卷 167-180页

作者： Charles M.Didier Julia F.Orrico Omar S.Cepeda Trres Jorge Manrique castro Aliyah Baksh Swaminathan Rajaraman NanoScience Technology Center University of Central Florida4353 Scorpius StreetResearch ISuite 231FL 32816 OrlandoUSA Burnett School of Biomedical Sciences University of Central Florida6900 Lake Nona BlvdFL 32827 OrlandoUSA Department of Biomedical Engineering Polytechnic University of Puerto Rico37700918Ponce de LeonSan JuanPuerto Rico Department of Electrical and Computer Engineering University of Central Florida4238 Scorpius StreetFL 32816 OrlandoUSA Department of Materials Science and Engineering University of Central Florida12760 Pegasus DriveEngineering ISuite 207FL 32816 OrlandoUSA

benchtop tissue cultures have become increasingly complex in recent years,as more on-a-chip biological technologies,such as microphysiological systems(MPS),are developed to incorporate cellular constructs that more accurately represent their respective biological *** MPs have begun facilitating major breakthroughs in biological research and are poised to shape the field in the coming *** biological systems require integrated sensing modalities to procure complex,multiplexed datasets with unprecedented combinatorial biological *** this work,we expanded upon our polymer-metal biosensor approach by demonstrating a facile technology for compound biosensing that was characterized through custom modeling *** reported herein,we developed a compound chip with 3D microelectrodes,3D microfluidics,interdigitated electrodes(IDEs)and a *** chip was subsequently tested using the electrical/electrochemical characterization of 3D microelectrodes with 1 kHz impedance and phase recordings and IDE-based high-frequency(-1 MHz frequencies)impedimetric analysis of differential localized temperature recordings,both of which were modeled through equivalent electrical circuits for process parameter ***,a simplified antibody-conjugation strategy Was employed for a similar IDE-based analysis of the implications of a key analyte(L-glutamine)binding to the equivalent electrical ***,acute microfluidic perfusion modeling was performed to demonstrate the ease of microfluidics integration into such a polymer-metal biosensor platform for potential complimentary localized chemical ***,our work demonstrates the design,development,and characterization of an accessibly designed polymer-metal compound biosensor for electrogenic cellular constructs to facilitate comprehensive MPS data collection.

关键词： polymer recording breakthrough

Coxitis in axial spondyloarthritis:the unmeasured,yet functionally most important,radiographic progression

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 Medical Journal 2021年第21期134卷 2550-2552页

作者： Francisco Airton castro Rocha Atul Deodhar Department of Internal Medicine Faculdade de MedicinaUniversidade Federal do CearaFortalezaCEBrazil Oregon Health&Science University PortlandORUSA

While spinal involvement in patients with axial spondyloarthritis(axSpA)gets all the attention,extra-spinal joint involvement can pose a major physical and functional burden for these patients.

关键词： involvement patients axial

维普期刊数据库

Vapor and Pressure Sensors Based on Cellulose Nanofibers and Carbon Nanotubes Aerogel with Thermoelectric Properties

在线全文

学校读者我要写书评

暂无评论

Journal of Renewable Materials 2018年第3期6卷 277-287页

作者： Rajendran Muthuraj Abhishek Sachan Mickael castro Jean-Francois Feller Bastien Seantier Yves Grohens Dupuy de Lôme Research Institute(IRDL) FRE CNRS 3744University of Southern BrittanyRue de Saint Maudé56321 Lorient CedexFrance

In this work,thermally insulating and electrically conductive aerogels were prepared from cellulose nanofibers(CNF)and carbon nanotubes(CNTs)by environmentally friendly freeze-drying *** thermal conductivity of neat CNF aerogel is 24 mW/(m・K)with a density of 0.025 g/*** the addition of CNTs into CNF aerogel,the electrical conductivity was significantly increased while the thermal conductivity was increased to 38 mW/(m・K).Due to these interesting properties,the Seebeck coefficient and the figure of merit(ZT)of the CNF/CNTs aerogels were measured and showed that CNF/CNTs aerogel thermoelectric properties can be *** compressibility and electrical resistance of the CNF/CNTs aerogel highlighted its pressure-responsive property.A set of volatile organic compounds(VOCs)were exposed to aerogels to monitor the resistance *** CNF/CNTs aerogel showed high sensitivity and good response to both nonpolar and polar vapors due to the absorption by both CNF and CNTs *** prepared CNF/CNTs aerogel is therefore a good candidate for thermal insulation,thermoelectric material,VOCs sensing,and pressure-sensing applications.

关键词： CNF/CNTs aerogel thermal conductivity pressure sensing thermoelectric materials VOCs sensing

PSEUDO-PEPTIDE CHEMISTRY

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

有机化学 1987年第4期 311-314页

作者： Bertrand castro Centre CNRS-Inserm de Pharmacologle-Endocrinologie rue de la Cardonille.34094 Montpellier France

For a long period,chemical modifica-tions of peptides required for structure-acti-vity relationships have been restricted tocoded residues substitution or D to L *** need of non proteolysable

关键词： PSEUDO-PEPTIDE CHEMISTRY very BOP Pro

A regionalized IO-model to value seasonal recreational ecosystem services in a mountain National Park in Spain

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Mountain Science 2022年第1期19卷 211-227页

作者： Víctor MARTIN BARROSO Mónica de castro-PARDO Pascual FERNÁNDEZ MARTÍNEZ João C.AZEVEDO Department of Applied Economics I and history and economic institutions Faculty of Law and Social SciencesUniversidad Rey Juan CarlosCampus of VicálvaroTulipanMóstoles 28933Spain Department of Financial and Actuarial Economics and Statistics-Statistics and Operational Research Complutense University of MadridCampus of SomosaguasPozuelo de Alarcon 28223Spain Centro de Investigação de Montanha Instituto Politécnico de BragançaCampus de Santa ApolóniaBragança 5300-253Portugal

Recreational Ecosystem Services(RES)are among the most frequently evaluated ecosystem *** are seen as a major opportunity for sustainable development in areas of high ecological value resulting from the presence of emblematic species,habitats or scenery,often integrated in conservation areas,in particular in mountain areas affected by depopulation,rising environmental risks and ***,the assessment of RES has been based on Contingent Valuation and Choice Experiments,methods with limitations related to their ***,Input-Output(IO)models provide a very accurate and effective way of valuation of RES with regional information regarding interindustry *** data on nature tourist expenditure may be only available annually,tourism inflows have a strong seasonal behavior,which impacts the profitability of several local economic *** this paper,we firstly constructed a novel regionalized IO-model based on Cross-Industry Location Quotients using employment data and,secondly,based on Monte Carlo simulation,we estimated nature tourist expenditure monthly using data on nature tourism *** method allowed for a more precise RES evaluation,estimating direct,indirect and induced monthly economic impacts of nature-based *** method was applied to the Ordesa and Monte Perdido(OMP)National Park in the Spanish *** estimate the average tourist expenditure,we collected and analyzed spending on commerce,hospitality and restaurants,leisure,and transport of 385 *** suggest that using a regionalized IO model leads to a considerable reduction of over-estimation of the economic impact of tourist expenditure estimated by conventional *** into consideration the direct,indirect and induced effects of tourist expenditure in 2016-2018,the total annual output effect in the OMP National Park amounted to€208.8 million,while the total income effect amounted to€86.29 ***,a total of

关键词： Input-Output Monte Carlo Simulation Location quotients Recreational Ecosystem Services Nature tourism Sustainable mountain development

维普期刊数据库