检索结果-南通市图书馆

Pathogenesis and clinical management of arboviral diseases

在线全文

学校读者我要写书评

暂无评论

World Journal of Virology 2025年第1期14卷 9-50页

作者： Victoria Cenci Dietrich Juan Marcos Caram Costa Marina Maria Gomes Leite Oliveira Carlos Eduardo Oliveira Aguiar Luis Guilherme de Oliveira Silva Marcel Silva Luz Fabian Fellipe Bueno Lemos Fabrício Freire de Melo Instituto Multidisciplinar em Saúde Universidade Federal da BahiaVitória da Conquista 45029-094BahiaBrazil

Arboviral diseases are viral infections transmitted to humans through the bites of arthropods,such as mosquitoes,often causing a variety of pathologies associated with high levels of morbidity and *** the past decades,these infections have proven to be a significant challenge to health systems worldwide,particularly following the considerable geographic expansion of the dengue virus(deNV)and its most recent outbreak in Latin America as well as the difficult-tocontrol outbreaks of yellow fever virus(YFV),chikungunya virus(CHIKV),and Zika virus(ZIKV),leaving behind a substantial portion of the population with complications related to these ***,the world is experiencing a period of intense globalization,which,combined with global warming,directly contributes to wider dissemination of arbovirus vectors across the ***,all continents remain on high alert for potential new ***,this review aims to provide a comprehensive understanding of the pathogenesis of the four main arboviruses today(deNV,ZIKV,YFV,and CHIKV)discussing their viral characteristics,immune responses,and mechanisms of viral evasion,as well as important clinical aspects for patient *** includes associated symptoms,laboratory tests,treatments,existing or developing vaccines and the main associated complications,thus integrating a broad historical,scientific and clinical approach.

关键词： Arboviruses Arbovirus infections dengue Zika virus Yellow fever Chikungunya virus Clinical diagnosis Pathogenesis Flavivirus Togaviridae infections

Physiology and health assessment,risk balance,and model for endstage liver disease scores:Postoperative outcome of liver transplantation

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 Journal of Transplantation 2025年第1期15卷 86-94页

作者： Raquel Hohenreuther Andresa ThoméSilveira Edison Moraes Rodrigues Filho Anderson Garcez Bruna Goularth Lacerda Sabrina Alves Fernandes Claudio Augusto Marroni Postgraduate Program in Hepatology Universidade Federal de Ciências da Saúde de Porto AlegrePorto Alegre 90050-170Brazil department of Intensive Medicine Hospital de Clínicas de Porto AlegrePorto Alegre 90035-903Brazil department of Public Health University of Vale do Rio dos SinosSao Leopoldo 93022-750Brazil

BACKGROUND Liver transplantation aims to increase the survival of patients with end-stage liver diseases and improve their quality of *** number of organs available for transplantation is lower than the *** provide fair organ distribution,predictive mortality scores have been *** To compare the Acute Physiology and Chronic Health Evaluation IV(APACHE IV),balance of risk(BAR),and model for end-stage liver disease(MELD)scores as predictors of *** Retrospective cohort study,which included 283 adult patients in the postoperative period of deceased donor liver transplantation from 2014 to *** The transplant recipients were mainly male,with a mean age of 58.1 *** were mostly male,with a mean age of 41.6 *** median cold ischemia time was 3.1 hours,and the median intensive care unit stay was 5 *** APACHE IV,a mean of 59.6 was found,BAR 10.7,and MELD *** 28-day mortality rate was 9.5%,and at 90 days,it was 3.5%.The 28-day mortality prediction for APACHE IV was very good[area under the curve(AUC):0.85,Pderate for BAR and MELD,respectively,(AUC:0.66,Pdeaths and *** for the best value for liver transplantation,it was significant only for APACHE IV(Pdeceased donor liver transplant recipients.

关键词： Liver transplantation Acute physiology and chronic health evaluation IV Balance of risk Model for end-stage liver disease Mortality Intensive care unit

Laplace-Beltrami Differentiability of Positive definite Kernels on the Sphere

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2013年第1期29卷 93-104页

作者： M. H. CASTRO V. A. MENEGATTO C. P. OLIVEIRA Faculdade de Matemática Universidade Federal de UberladiaCaixa Postal 593 38400-902 Uberlandia MG Brasil departamento de Matemática ICMC-USPSao CarlosCaixa Postal 668 13560-970 Sao Carlos SP Brasil ICE-DMC Universidade Federal de Itajubá37500-903 Itajubá MG Brasil

This contribution gives results on the action of the Laplace-Beltrami derivative on suffi- ciently smooth kernels on the sphere, those defined by absolutely and uniformly expansions generated by a family of at least continuous functions. Among other things, the results show that convenient Laplace-Beltrami derivatives of positive definite kernels on the sphere are positive definite too. We also include similar results on the action of the Laplace-Beltrami derivative on condensed spherical harmonic expansions.

关键词： Sphere Laplace-Beltrami operator Laplace-Beltrami derivative positive definite kernels,spherical harmonics

What can natural edges of gallery forests teach us about woody community performance in sharp ecotones?

在线全文

学校读者我要写书评

暂无评论

Journal of Plant Ecology 2017年第6期10卷 937-948页

作者： Gabriela Aparecida de Oliveira Coelho Marcela de Castro Nunes Santos Terra Hisaias de Souza Almeida Eduardo van den Berg departamento de Ciências Florestais Universidade Federal de LavrasC.Postal 3037LavrasMG 37200-000Brazil Instituto de Recursos Naturais Universidade Federal de ItajubáC.Postal 50ItajubáMG 37500-903Brazil departamento de Biologia Universidade Federal de LavrasC.Postal 3037LavrasMG 37200-000Brazil

Aims The diversity and structure of forest edges are a central issue in ***,most studies have focused on anthropogenic for-est edges,being natural ones least *** studied the com-munities of shrubs and trees in natural edges of gallery forests with the main goal of learning what are the main factors that shape the structure and diversity of these natural sharp *** We evaluated 10 gallery forest sites,allocating in each of them three 15×20 m *** plots were laid out in relatively rectilinear stretches of forest edges,respecting a minimal distance of 10 m between each *** they are permanent plots and meant to study eventual fluctuations in the forest-grasslands limits,we allocated the plots with their longest side parallel to the forest edge and covering perpendicularly 5 m of the grassland and 10 m of *** the plots we identified,mapped and measured all shrub and tree individuals with diameter at breast height(DBH)≥1 *** Findings Although many differences exist among the communities in terms of density and basal area,all of them were highly dense and had relatively low basal *** addition,both the number of individu-als and the basal area increased rapidly towards the forest *** results also revealed that the edge communities are composed mainly by small individuals that demand a great amount of *** the vertical stratification and the proportion of the functional groups are similar among the sites yet change quickly in the first 10 m of the forest ***,the floristic similarities were low among the communities mainly due to the species turnover within each ***,although the overall structure is constant in the studied edges,the low floristic similarity among them possibly indicates that the species within the same functional groups are sub-stituting each other across the *** older and seemingly stable,our results showed the gallery forest edges are quite simila

关键词： beta diversity edge effects ecotone forest-grassland transition functional groups.

Photocatalytic degradation of Ibuprofen Using TiO<sub>2</sub>and Ecotoxicological Assessment of degradation Intermediates against <i>Daphnia similis</i>

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 Protection 2014年第7期5卷 620-626页

作者： Farley S. Braz Milady R. A. Silva Flávio S. Silva Sandro J. Andrade Ana L. Fonseca Márcia M. Kondo Natural Resource Institute Universidade Federal de Itajubá Itajubá Brazil Physic and Chemistry Institute Universidade Federal de Itajubá Itajubá Brazil

Several pharmaceutical compounds have been detected in natural aqueous systems and ibuprofen (IBF), one of the most consumed medicament, has been detected in many countries. The degradation efficiency of IBF under TiO2/UV radiation was evaluated. Optimum degradation results were observed using 20 mg·L-1 of TiO2, pH 7.8 and 5 mg·L-1 of IBF. Under these experimental conditions total IBF removal was achieved in less than 60 min of irradiation. Although total IBF concentration was observed, the total mineralization of the compound was not achieved. The by-products generated during TiO2/UV reaction showed to be more toxic against Daphnia similis than the initial IBF present in aqueous solution.

关键词： Photodegradation TiO2 Ibuprofen Acute Toxicity

On Conditionally Positive definite Dot Product Kernels

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2008年第7期24卷 1127-1138页

作者： V.A.MENEGATTO C.P.OLIVEIRA Ana P.PERON departamento de Matemática ICMC-USP- Sāo CarlosCaixa Postal 66813560-970 Sāo Carlos SPBrasil universidade federal de itajubá ICE-DMCCaixa Postal 5037500-903 ItajubáMGBrasil

Let m and n be fixed, positive integers and P a space composed of real polynomials in m variables. The authors study functions f ： R →R which map Gram matrices, based upon n points of R^m, into matrices, which are nonnegative definite with respect to P Among other things, the authors discuss continuity, differentiability, convexity, and convexity in the sense of Jensen, of such functions

关键词： conditionally positive definite kernels dot product kernels Gram matrices convexity convexity in the sense of Jensen

Fermion bound states in geometrically deformed backgrounds

在线全文

学校读者我要写书评

暂无评论

Chinese Physics C 2019年第1期43卷 1-8页

作者： D.Bazeia A.Mohammadi D.C.Moreira departamento de Física Universidade Federal da Paraíba departamento de Física Universidade Federal de Pernambuco Unidade Acadêmica de Física Universidade Federal de Campina Grande

This work deals with the behavior of fermions in the background of kinklike structures in the twodimensional spacetime. The kinklike structures appear from bosonic scalar field models that engender distinct profiles and interact with the fermion fields via the standard Yukawa coupling. We first consider two models that engender parity symmetry, one leading to the exclusion of fermion bound states, and the other to the inclusion of bound states, when the parameter that controls the bosonic structure varies from zero to unity. We then investigate a third model where the kinklike solution explicitly breaks parity symmetry, leading to fermion bound states that are spatially asymmetric.

关键词： topological defect fermion interaction bound state

Unveiling an important interaction in forestry:Ectomyelois muriscis and Khaya grandifoliola cankers and tree growth

在线全文

学校读者我要写书评

暂无评论

Journal of Forestry Research 2021年第3期32卷 1287-1293页

作者： Lísias Coelho AndréRTerra Nascimento Jean Carlos Santos Vinícius Flabes Silva Instituto de Ciências Agrárias Universidade Federal de UberlandiaUberlandiaBrazil Instituto de Biologia Universidade Federal de UberlandiaUberlandiaBrazil departamento de Ecologia Universidade Federal de SergipeSergipeBrazil

African mahogany,Khaya grandifoliola ***.,is the most planted mahogany species in Brazil,and became the choice species when plantations of Brazilian mahogany,Swietenia macrophyla King became unsustainable due to their susceptibility to the shoot borer Hypsipyla grandella *** study evaluated plantation growth and the occurrence of cankers associated with Ectomyelois muriscis Dyar *** recorded plantation volume,survival,and canker incidence of a plantation established in 2010 at 6 m×5.5 m *** were collected and reared on canker bark fragments until final adult *** were frequently associated with Ectomyelois muriscis *** average incidence of the moth(2.9%)was not a significant concern,however,an extreme incidence of 45%would indicate that management strategies should be *** is the first report of Ectomyelois muriscis attacking the bark of Khaya grandifoliola in the Cerrado biome.

关键词： African mahogany Stem cankers Potential pest Stand growth

Landesman–Lazer Type Conditions and Multiplicity Results for Nonlinear Elliptic Problems with Neumann Boundary Values

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2014年第2期30卷 229-250页

作者： Edcarlos Domingos DA SILVA Francisco Odair de PAIVA universidade federal de Gois Departamento de Matemtica universidade federal de So Carlos Departamento de Matemtica

We establish the existence and multiplicity of solutions for Steklov problems under non- resonance or resonance conditions using variational methods. In our main theorems, we consider a weighted eigenvalue problem of ... 详细信息

关键词： Neumann-Steklov eigenvalue problems resonance Landesman-Lazer conditions