检索结果-南通市图书馆

Characterization of atmospheric aerosol (Pm10 and Pm2.5) from a medium sized city in S?o Paulo state,Brazil

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 Environmental Sciences 2020年第3期32卷 238-251页

作者： Bruno T.Franzin Filipe C.Guizellini Diego V.de Babos Ossamu Hojo Ieda Ap.Pastre m.ry r.r.m.rchi Fernando L.Fertonani cristina m.r.r.Oliveira Sao Paulo State University(Unesp) Chemistry InstituteAnalytical Chemistry DepartmentAraraquaraSP14800-060Brazil Federal University of Sao Carlos-UFSCAr Chemistry DepartmentSao CarlosSP13565-905Brazil Chemistry and Environmental Sciences Department BiosciencesLanguages and Exact Sciences InstituteIbilceSaoPaulo State University(Unesp)Sao Jose do Rio PretoSP15054-000Brazil Centro de Quimica Estrutural-Faculdade de Ciencias da Universidade de Lisboa Edif.C8Campo Grande1749-016 LisboaPortugal

Air pollution causes deleterious effects on human health with aerosols being among the most polluting *** objective of this work is the characterization of the Pm2.5 and Pm10 aerosol mass in the *** methods of analysis include WD-XrF and *** were correlated with meteorological information and air mass trajectories(model HYSPLIT)by multivariate analysis.A m.rphological structural analysis was also carried out to identify the probable sources of atmospheric aerosols in the city of Sao Jose do rio Preto,*** mean mass concentration values obtained were 24.54 μg/m^3 for Pm10,above the WHO annual standard value of 20 μg/m^3 and 10.88 μg/m^3 for Pm2.5 whose WHO recommended limit is10 μg/m^***-XrF analysis of the samples revealed Si and Al as major components of the coarse *** the fine fraction,the major elements were Al and *** SEm-FEG characterization allowed identifying the m.rphology of the particles in agglom.rates,ellipsoids and filaments in the Pm10,besides spherical in the *** analysis by EDS corroborated WD-XrF results,identifying the crustal elements,aluminosilicates and elements of anthropogenic origin in the coarse *** the fine fraction crustal elements were also identified;aluminosilicates,black carbon and spherical particles(C and O) originating from combustion processes were *** use of multivariate analysis to correlate air mass trajectories with the results of the m.rpho-structural characterization of the particulate matter allowed confirmation of the complex composition of the particles resulting from the combination of both local and long-distance sources.

关键词： Urban aerosol Pm10 Pm2.5 WD-XrF SEm-EDS

The ecological performance of metallophyte plants thriving in geochemical islands is explained by the Inclusive Niche Hypothesis

在线全文

学校读者我要写书评

暂无评论

Journal of Plant Ecology 2015年第1期8卷 41-50页

作者： Helena C.Serrano cristina Antunes manuel J.Pinto cristina máguas m.ria Amélia m.rtins-Loução cristina Branquinho Centro de Biologia Ambiental Faculdade de CiênciasUniversidade de LisboaCampo Grande1749-016 LisboaPortugal Jardim Botânico do museu Nacional de História Natural e da Ciência Universidade de LisboaR.Escola Politécnica 581250-102 LisboaPortugal

Aims The Inclusive Niche Hypothesis has not been validated for plants using ecophysiological *** few experiments have measured growth and competition but not the physiological response of plants.A metallophyte plant that hyperaccumulates aluminium(Al),Plantago almogravensis,showed a defined spa-tial distribution by occurring mostly on vegetation gaps associ-ated with metalliferous areas(geochemical islands).This case was used to determine,in situ,whether the Inclusive Niche Hypothesis was suitable to explain the extent of the species real-ized *** The vegetation associated with *** geochemical islands in the SW coast of Portugal was *** biotic(neighbouring plants)and abiotic(edaphic)components of the niche were cor-related with parameters of the plant’s ecological and physiological performances(plant density and cover;leaf C and N concentration and isotopic composition;growth).The results were obtained using image analysis,abundance and m.rphological measures,isotopic signatures and chemical *** Findings The species showed better physiological performance where its ecological performance was lower due to trade-offs with environ-mental *** species’realized niche was mostly limited by shrub competition and soil *** limits contribute to explain the rarity status of the species:the species has a poor capacity to compete but,due to an enhanced Al-tolerance and Al-hyperaccumulator trait,has the ability to find refuge in geochem-ical islands that are too harsh for most other *** work,based on ecophysiological field studies,provides support for the Inclusive Niche Hypothesis relating to plant species.

关键词： competition ecophysiology edaphic endemism hyperaccumulation stable isotopes trade-off

A single session of strength training changed plasma levels of resistin,but not leptin in overweight and obese men

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Sports medicine and Health Science 2024年第4期6卷 324-330页

作者： Yago m.rtins Fortes Antonio Felipe Souza-Gomes Alessandro roberto Silveira m.reira Leo Nogueira Campos Sam.ra Silva de moura Lucelia Scarabeli Silva Barroso m.rcelo Henrique Salviano de Faria Heliana de Barros Fernandes Aline Silva de m.randa Hugo Cesar m.rtins-Costa Ana cristina Simoes e Silva Janaina matos m.reira Albena Nunes-Silva Laboratory of Inflammation and Exercise Immunology Department of Physical EducationSchool of Physical EducationFederal University of Ouro PretoOuro PretoMGBrazil Postgraduate Program in Health and Nutrition Nutrition SchoolFederal University of Ouro PretoOuro PretoMGBrazil Interdisciplinary medical research Laboratory Faculty of MedicineFederal University of Minas GeraisBelo HorizonteMGBrazil Neurobiology Laboratory Institute of Biological SciencesFederal University of Minas GeraisBelo HorizonteMGBrazil Department of Physical Education Pontifical Catholic University of Minas GeraisBrazil Department of Pediatrics Faculty of MedicineFederal University of Minas Gerais(UFMG)Belo HorizonteMGBrazil

Obesity has a complex multifactorial etiology and is characterized by excessive accumulation of adipose *** adipose tissue has deleterious effects on health because it secretes large amounts of inflammatory *** calorie restriction associated with strength training may be useful in managing chronic systemic *** study aimed to evaluate the acute effect of a single strength-training session on plasma adipokine levels in sedentary,overweight,and obese young *** study included twelve men(Age:[34.95±9.77]years;Height:[174.16±3.66]centimeter[cm];Weight:[97.83±12.87]kilogram(kg);body mass index[BmI]:[32.30±4.51]kg/m2),who performed a single strength training *** strength training protocol consisted of 4 sets of 12 repetitions in the following six exercises,45°leg press,bench press,leg extension,machine row,leg curl,and shoulder *** samples were collected before,immediately after,and 1-h subsequent after strength *** plasma levels of resistin and leptin were measured.A significant decrease in resistin levels were found 1 h after the strength training session if compared to levels before the training session(pre-[before][2390±1199]picograms per milliliter[pg/mL]vs post-1 h[1-h subsequent][1523±798],6 pg/mL,p=0.0028).The plasma leptin levels did not differ at any time *** conclusion,a very well controlled single session of strength training significantly decreased the plasma levels of resistin without altering the concentration of leptin in overweight and obese *** effect,at least in part,supports the benefits of exercise by reducing the low grade inflammation and insulin resistance in obesity.

关键词： Strength training Adipose tissue Obesity Chronicinflammation resistin Leptin

Blood extracellular vesicles (EVs) of central nervous system origin: a window into the brain

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural regeneration research 2020年第1期15卷 55-56页

作者： cristina Agliardi m.rio Clerici IrCCS Fondazione Don Carlo Gnocchi MilanoItaly(Agliardi CClerici M) Department of Pathophisiology and Transplantation University of MilanMilanoItaly(Clerici M)

Extracellular vesicles(EVs)are heterogeneous nano-sized vesicles of endocytic origin shed into blood and other body fluids such as urine,saliva,seminal fluid,ascites,amniotic liquid,synovial fluid,breast milk and cerebrospinal fluid(CSF)by quite all cell *** actively contribute to intercellular communication as they carry bioactive molecules that are selectively incorporated by the originating cell and are delivered to recipient cells over long and short distances(Simons and raposo,2009).EVs can be divided into three main groups according to their size and cellular origin:1)exosomes(40–120 nm),that have an endocytic origin and are formed by inward budding of the limiting mem.rane of multivescicular bodies,which fuse with the plasma mem.rane and release exosomes into the extracellular space;2)microvesicles(50–1000 nm),budding directly off the plasma mem.rane;3)apoptotic bodies(>1000 nm),which are released during *** originating via distinct processes,different subtypes of EVs carry different proteins within their mem.rane and luminal compartments that reflect the phenotype of the tissue of origin.

关键词： Blood urine origin

在线全文

学校读者我要写书评

暂无评论

国际护理知识网络建设的调查研究

International Journal of Nursing Sciences 2024年第3期11卷 374-380,I0004,I0005页

作者： m.rgareth Santos Zanchetta Suzanne Fredericks Kateryna metersky Geraldine m.rtorella Pammla Petrucka Laurie Clune Kelly Graziani Giacchero Vedana cristina rosa Soares Lavareda Baixinho Cristianne m.ria Fam.r rocha Sara Campagna Sally Zhang He m.rcia Teles de Oliveira Gouveia m.rcelo medeiros Denize Bouttelet munari Daniel Gonzalo Eslava Albarracin Carlos Aguilera-Serrano Walterlania Silva Santos Toronto metropolitan University TorontoCanada Florida State University TallahasseeUSA University of Saskatchewan ReginaCanada University of regina ReginaCanada State of Sao Paulo University Ribeirao PretoBrazil Lisbon Superior School of Nursing LisbonPortugal Federal University of rio Grande do Sul Porto AlegreBrazil University of Turin TurinItaly Scarborough Health Network ScarboroughCanada Federal University of Piauí TeresinaBrazil Federal University of Goias GoianiaBrazil Fundacion Universitaria Cafam BogotaColombia University of malaga MalagaSpain University of Brasília Ceil^andiaBrazil

本文报告了为创建护理知识网络(Nursing Knowledge Network,NKN)对不同国家护理院校进行环境扫描调查所收集到的信息。采用在线方式(2021年2-10月)进行环境扫描,探索研究领域的确定、现有资源、预期收益、教学研究创新、知识传播障碍及... 详细信息

本文报告了为创建护理知识网络(Nursing Knowledge Network,NKN)对不同国家护理院校进行环境扫描调查所收集到的信息。采用在线方式(2021年2-10月)进行环境扫描,探索研究领域的确定、现有资源、预期收益、教学研究创新、知识传播障碍及网络的预期贡献。目标信息提供者包括来自13个国家63所大学的200名护理教师。要求每所大学有1名参与者回答问卷。共有42所大学(约70%)回复,包括巴西21所,加拿大4所,葡萄牙和西班牙各3所,哥伦比亚、墨西哥、秘鲁和美国各2所,智利、意大利和巴拉圭各1所。其分享了相关信息和见解:通过护理高等教育机构之间的协作和交流,全球可以加强共同创新和研究合作能力;较少被研究的领域是知识网络生成证据、为当地科学实践提供信息的潜在重点。这些信息将为进一步了解护理发展,以及地方、区域和全球护理证据应用和传播相关的政府政策与计划制订提供参考。

关键词：信息网络创新扩散国际教育交流知识管理护理教育护理教师实践护理院校跨文化护理

Biom.rkers and subtypes of deranged lipid metabolism in nonalcoholic fatty liver disease

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2019年第24期25卷 3009-3020页

作者： José m mato cristina Alonso mazen Noureddin Shelly C Lu CIC bioGUNE Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (Ciberehd)Technology Park of BizkaiaDerio 48160BizkaiaSpain OWL metabolomics Technology Park of BizkaiaDerio 48160BizkaiaSpain Division of Digestive and Liver Diseases Comprehensive Transplant CenterCedars-Sinai Medical CenterLos AngelesCA 90048United States

Nonalcoholic fatty liver disease(NAFLD)is a heterogeneous and complex disease that is im.recisely diagnosed by liver *** covers a spectrum that ranges from simple steatosis,nonalcoholic steatohepatitis(NASH)with varying degrees of fibrosis,to cirrhosis,which is a major risk factor for hepatocellular *** and eating habit changes during the last century have made NAFLD the most common liver disease linked to obesity,type 2 diabetes mellitus and dyslipidemia,with a global prevalence of 25%.NAFLD arises when the uptake of fatty acids(FA)and triglycerides(TG)from circulation and de novo lipogenesis saturate the rate of FAβ-oxidation and verylow density lipoprotein(VLDL)-TG *** lipid metabolism is also associated with NAFLD progression from steatosis to NASH,and therefore,alterations in liver and serum lipidomic signatures are good indicators of the disease’s development and *** review focuses on the importance of the classification of NAFLD patients into different subtypes,corresponding to the main alteration(s)in the major pathways that regulate FA homeostasis leading,in each case,to the initiation and progression of *** concept also supports the targeted intervention as a key approach to maximize therapeutic efficacy and opens the door to the development of precise NASH treatments.

关键词： S-adenosylmethionine methionine adenosyltransferase Lipid metabolism multiomics Lipidomics Nonalcoholic steatohepatitis One-carbon metabolism Very low-density lipoproteins Steatosis Precision medicine

Stepwise magnetization reversal of geometrically tuned in diameter Ni and FeCo bi-segmented nanowire arrays

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano research 2019年第7期12卷 1547-1553页

作者： Ester m. Palm.ro miguel mendez Silvia Gonzalez cristina Bran Victor Vega manuel Vazquez Victor m. Prida Institute of materials Science of madrid (ICmm-CSIC) Madrid 28049Spain Department of Physics University of OviedoFederico Garda Lorca 18Oviedo 33007Spain Division of Permanent magnets and Applications IMDEA NanoscienceMadrid 28049Spain

magnetization reversal processes of hexagonal dense arrays of bi-segmented Ni and Fe50Co50 nanowires consisting of two well defined diameters (45 and 80 nm) have been *** nanowires were grown inside of tailored pores of anodic alumina templates by combined anodization,atomic layer deposition (ALD) and electrodeposition *** experiments have allowed to identify their two-step magnetization reversal process ascribed to the respective segments of different *** is concluded from the differential susceptibility observed in the hysteresis loops,contrary to those for nanowires with homogeneous *** results are also confirmed by the first-order reversal curve (FOrC) distribution diagrams,where an elongation parallel to the interaction axis around two coercive field values is obtained,which is correlated to the difference in diameter of the two *** well-defined two-step magnetization reversal process through the nanowire diameter design is thought to be very useful for the advanced control of the remagnetization in arrays of magnetic multidomain systems.

关键词： Bi-segmented nanowires nickel iron cobalt alloy stepwise magnetization reversal first-order reversal curve (FOrC)

Trihalomethane concentrations in tap water as determinant of bottled water use in the city of Barcelona

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 Environmental Sciences 2017年第8期29卷 77-92页

作者： Laia Font-ribera Jordi Colom.r Cotta Anna Gómez-Gutiérrez cristina m.Villanueva ISGlobal Centre for Research in Environmental Epidemiology (CREAL) 08003 Barcelona Spain ImIm (Hospital del m.r medical research Institute) 08003 Barcelona Spain Uniuersitat Pompeu Fabra (UPF) 08003 Barcelona Spain CIBEr Epidemiologfa y Salud Publica (CIBErESP) 28029 Madrid Spain Public Health Agency of Barcelona (ASPB) 08023 Barcelona Spain

Bottled water consumption is increasing worldwide, despite its huge economic and environmental cost. We aim to describe personal and tap water quality determinants of bottled water use in the city of Barcelona. This cross-sectional study used data from the Health Survey of Barcelona in 2006（N = 5417 adults）. The use of bottled water to drink and to cook was evaluated in relation to age, gender, educational level, district and levels of trihalomethanes（THms）, free chlorine, conductivity, chloride, sodium, p H, nitrate and aluminium in municipal tap water using robust Poisson regression. The prevalence of bottled water use to drink and cook was 53.9% and 6.7%, respectively. Chemical parameters in water had a large variability（interquartile range of THms concentrations： 83.2–200.8 μg/L）and were correlated between them, except aluminium. Drinking bottled water increased with educational level, while cooking with bottled water was higher among men than among women and decreased with age. After adjusting by these personal determinants, a dose–response relationship was found between concentrations of all chemicals except aluminium in tap water and bottled water use. The highest association was found for THms,with a Prevalence ratio of 2.00（95%CI = 1.86, 2.15） for drinking bottled water and 2.80（95%CI = 1.72, 4.58） for cooking with bottled water, among those with 〉 150 μg/L vs. 〈 100 μg/L THms in tap water. Conclusion： m.re than half of Barcelona residents regularly drank bottled water, and the main determinant was the chemical composition of tap water,particularly THm level.

关键词： Tap water Drinking water Trihalomethanes Organoleptics Determinants Prevalence

Understanding plant drought resistance in a mediterranean coastal sand dune ecosystem:differences between native and exotic invasive species

在线全文

学校读者我要写书评

暂无评论

Journal of Plant Ecology 2018年第1期11卷 26-38页

作者： cristina Antunes Ana Júlia Pereira Patrícia Fernandes m.rgarida ramos Lia Ascensão Otília Correia cristina máguas Centre for Ecology Evolution and Environmental ChangesFaculdade de CiênciasUniversidade de LisboaCampo Grande1749-016 LisboaPortugal PPG-Ecologia Instituto de BiologiaCP 6109Universidade Estadual de Campinas-UNICAMP13083-970 CampinasSão PauloBrazil SPBotânica-Botanical Society of Portugal Travessa do Jardim 3A-dos-Potes2615-018 Alverca do RibatejoPortugal CESAm-Centre for Environmental and m.rine Studies Faculdade de Ciências-CBVUniversidade de Lisboa1749-016 LisboaPortugal

Aims mediterranean coastal dunes are habitats of great conservation interest,with a distinctive and rich *** the last century,Acacia spp.,native from Australia,have been introduced in Portugal,with the objective of stabilizing sand dunes,and since have become dominant in num.rous sand dune *** invasion process led to the reduction of native plant species richness,changed soil characteristics and modified habitat’s microclimatic *** aim of this research was to typify and compare,in mediterranean sand dune ecosystems,the ecophysiological responses to drought of Helichrysum italicum and Corema album,two native species,and Acacia longifolia,an exotic invasive *** addressed the following specific objectives:(i)to com-pare water relations and water use efficiencies,(ii)to evaluate water stress,(iii)to assess water use strategies and water sources used by plants and(iv)to evaluate the m.rphological adaptations at leaf and phyllode *** In order to obtain an integrative view of ecophysiological patterns,water relations and performance measuring methods have been applied:predawn(ψPD)and midday(ψmD)water potential,chloro-phyll a fluorescence,oxygen isotopic composition of xylem.rain and groundwater(δ18O)and leaf carbon isotopic discrimination(Δ13C).The leaf characteristics of the three species,as well as the histochemistry of non-glandular trichome cell walls,were also studied to identify m.rpho-traits related to drought *** Findings The results support our initial hypothesis:although *** clearly possesses a degree of resistance to water stress,such ability is provided by a different water strategy,when compared to native *** relied on m.rphological adaptations to restrict water loss,whereas the invasive species adjusted the water uptake as a way to balance their limited ability of restricting water *** corroborate that woody native species(i)have a conservative water-saving strategy an

关键词： ecophysiology water use strategy leaf m.rphology Acacia longifolia Corema album Helichrysum italicum