检索结果-南通市图书馆

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

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.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Physico-chemical characterization of acid base disorders in patients with COVID-19:A cohort study

引用

World Journal of Nephrology 2024年第2期13卷 16-23页

作者： Sergio Pinto de Souza Juliana R Caldas Marcelo Barreto Lopes Marcelo Augusto Duarte Silveira Fernanda oliveira coelho Igor oliveira Queiroz Pedro Domingues Cury Rogério da Hora Passos department of Nephrology Hospital São RafaelSalvadorBA 41253190Brazil department of Nephrology D’Or Institute for Research and Education(IDOR)SalvadorBA 41253190Brazil Faculty of Medicine Escola Bahiana de Medicina e Saúde Pública-EBMSPSalvadorBA 40290000Brazil department of Intensive Care D’Or Institute for Research and Education(IDOR)SalvadorBA 41253190Brazil Hospital São Rafael D’Or Institute for Research and Education(IDOR)SalvadorBA 41253190Brazil department of Intensive Care Unit Hospital Israelita Albert EinsteinSao PauloSP 05652900Brazil

BACKGROUND Acid-base imbalance has been poorly described in patients with coronavirus disease 2019(COVID-19).Study by the quantitative acid-base approach may be able to account for minor changes in ion distribution that may have been over-looked using traditional acid-base analysis *** a cohort of critically ill COVID-19 patients,we looked for an association between metabolic acidosis surrogates and worse clinical outcomes,such as mortality,renal dialysis,and length of hospital *** To describe the acid-base disorders of critically ill COVID-19 patients using Stewart’s approach,associating its variables with poor *** This study pertained to a retrospective cohort comprised of adult patients who experienced an intensive care unit stay exceeding 4 days and who were diagnosed with severe acute respiratory syndrome coronavirus 2 infection through a positive polymerase chain reaction analysis of a nasal swab and typical pulmonary involvement observed in chest computed tomography *** and clinical data were obtained from electronic *** variables were compared using Fisher’s exact *** data were presented as median and interquartile *** Mann-Whitney U test was used for *** In total,211 patients were *** mortality rate was 13.7%.Overall,149 patients(70.6%)presented with alkalosis,28 patients(13.3%)had acidosis,and the remaining 34 patients(16.2%)had a normal arterial pondus *** those presenting with acidosis,most had a low apparent strong ion difference(SID)(20 patients,9.5%).Within the group with alkalosis,128 patients(61.0%)had respiratory *** non-survivors were older,had more comorbidities,and had higher Charlson’s and simplified acute physiology score *** did not find severe acid-base imbalance in this *** analyzed Stewart’s variables(effective SID,apparent SID,and strong ion gap and the effect of albumin,lactate,phosphorus,and chloride)were not d

关键词： COVID-19 Physicochemical approach Acid-base status Critically ill patients Acute respiratory syndrome

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Risk Stratification in Obstetrics: An Integrated Approach to Maternal Health

引用

Open Journal of Obstetrics and Gynecology 2024年第6期14卷 903-910页

作者： Taina Crespo Mendonca Bianca Beatriz Soares dos Reis Júlia Cruz coelho Antônio de oliveira Battistini Pestana Vitória Carolina Barreto Negri Alvaro Augusto Trigo department of Medicine University of Franca Franca Brazil

Introduction: Prenatal care is crucial for maternal and fetal health, highlighting the importance of obstetric risk stratification. This enables personalized care, avoiding unnecessary interventions and reducing costs. Conditions such as first trimester bleeding, spontaneous abortion, gestational trophoblastic disease, and ectopic pregnancy require specific approaches. Early identification of these complications is vital, especially in urgent and emergency obstetric cases, which demand immediate hospital attention. Objective: Comprehensive review of first trimester pathologies and gestational hypertension, focusing on obstetric risks and personalized prenatal management. Methods: Literature review on bleeding and gestational hypertension. Results: The study provides a detailed analysis of pathologies associated with first trimester uterine bleeding and hypertensive disorders, focusing on obstetric risk stratification. The main causes of maternal and fetal mortality are hypertensive disorders, hemorrhages, infections, childbirth complications, and abortion. Spontaneous abortion is common, with different classifications, ranging from threatened to missed abortion. Infected abortion is a severe complication. Brazil has restrictive abortion laws, but many unsafe abortions occur, resulting in high public health costs. Pharmacological treatment with misoprostol is a safe option. Other pathologies include gestational trophoblastic disease, ectopic pregnancy, and placenta previa. Preeclampsia and eclampsia are severe conditions requiring immediate treatment to avoid complications. Conclusion: Early identification and management of obstetric risk factors, such as uterine bleeding, are essential for positive maternal and fetal outcomes. A multidisciplinary approach is fundamental.

关键词： Obstetrics Emergencies Hypertension Pregnancy-Induced Uterine Hemorrhage Pregnancy Trimester First

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Sharp differentiation on the performance of plant functional groups across natural edges

引用

Journal of Plant Ecology 2019年第1期12卷 186-198页

作者： Evelyn da Fonseca Alecrim Bragion gabriela aparecida oliveira coelho Flávia Freire de Siqueira Maria Uriarte Eduardo van den Berg department of Forest Engineering Federal University of LavrasCampus UniversitárioCaixa Postal 3037CEP 37200-000LavrasMGBrazil department of Ecology Evolution and Environmental BiologyColumbia UniversityNew YorkNYUSA

Aims Gallery forests within grasslands have natural edges with open envi-ronments and offer a unique opportunity to examine how species performances vary across environmental ***,we asked if demographic rates of tree functional groups varied along the edge,if we could explain differences in plant strategies and performance through functional traits and which traits increase growth and sur-vival in natural *** We examine mortality and recruitment within the first 10 m of nat-ural edges of eight gallery forests using demographic data from five annual *** defined a priori plant strategies using tree functional groups:light demanding,pioneer and shade *** Findings The shade-tolerant group had the lowest mortality rates and basal area(BA)loss,while pioneer and light-demanding species had similar behavior for these *** survival and growth of functional groups were affected differently by the distance from the *** pioneer group survived more near the edge,while light-demanding and shade-tolerant groups toward the forest *** groups had higher growth in the *** differences could be explained by functional traits since most species have an acquisition strategy:higher specific leaf area and growth,lower leaf dry matter con-tent,lighter stem density,deeper crowns and less slender *** traits enhanced ***,mortality selected both strategies,but in distinct edge’s *** study showed that the high diversity found in natural edges can be explained by a niche and functional perspective,where differences in functional traits lead to differential performance along the environmental gradient.

关键词： edges diversity gradient niche hypothesis SLA LDMC

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Statistical Properties of a System Consisting of a Superconducting Qubit Coupled to an Optical Field Inside a Transmission Line

引用

Communications in Theoretical Physics 2018年第6期69卷 727-734页

作者： Clodoaldo Valverde gabriela Rodrigues Vaz Vitor Teles de oliveira Basilio Baseia Campus de CiSncias Exatas e Tecnologicas Universidade Estadual de GoiaisBR 153km 9875.132-903 AnapolisGOBrazil Universidade Paulista(UNIP)-74.845-090 GoianiaGoiasBrazil Instituto de Ffsica Universidade Federal de Goias-74.001-970GoianiaGoiasBrazil departamento de Fisica Universidade Federal da Paraiba-58.051-970Joao PessoaParaibaBrazil

The present work investigates the entropy and the excitation inversion of a coupled system that consists of a qubit represented by a Cooper pair box(CPB) interacting with a transmission line working as a circuit quantum electrodynamics(CQED). The proposed scheme uses the Buck-Sukumar model with a time dependent frequency in the presence of losses to study the evolution of the entropy and the excitation inversion of the system. We have shown that the CQED is much more sensitive to the presence of losses than the CPB. The results also show that it is possible to monitor properties of the subsystems through appropriate choices of the time-dependent parameters.

关键词：统计性质 Qubit 系统传播组成超导时间依赖 qubit

来源：

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

Prevalence of congenital cytomegalovirus infection in preterm,small for gestational age and low birth weight newborns:characteristics and cytokines profile

引用

World Journal of Pediatrics 2022年第7期18卷 498-504页

作者： Janaina Fortes Lino Llian Martins oliveira Diniz debora Marques de Miranda Daniela Valadao Freitas Rosa Nathalia Gualberto Souza e Silva Eduardo de Souza Nicolau Larissa Goncalves Rezende Lais Silva Carvalho Marianna Fischer de Paula Lopes Luisa Petri Correa gabriela Mafra de oliveira Flavia Miranda da Silva Alves Lorena Batista Pascoal Erika Lima Dolabella Teixeira da Costal Leni Marcia Anchieta Roberta Maia de Castro Romaneli Odete Valadares Maternity Hospital Belo HorizonteBrazil Pediatrics department.Faculy of Medice of Federal University of Minas Gerais Belo Horizonte.Brazil Molecular Laboratory of the INCT-MM.Faculy of Medicine.Federal University of Minas Gerais-UFMG.Belo Horizonte Brazil Faculty of Medicine.Federal University of Minas Gerais-UFMG Belo Horizonte.Brazil Risoleta Tolentino.Neves University Hospital's Maternity Belo HorizonteBrazil Sofia Feldman Maternity Hospital Belo HorizonteBrazil Hospital das Clinicas Maternity-Federal University of Minas Gerais.Belo Horizonte Brazil Pediatrics department of Federal University of Minas Gerais School Medicine.Minas Gerais.Av Professor Alfredo Balena 190.Belo Horizonte 30130-100Brazil

Cytomegalovirus is the most frequent agent of congenital viral infections,affecting approximately 0.2%-2.4%of live births in different countries[1-7].Universal screening for congenital cytomegalovirus infection in newborns is not a standard practice considering cost-benefit issues and viabil-ity of diagnostic ***,most newborns are asympto-matic and there is no effective treatment for this population[2-5].

关键词： weight birth characteristics

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Hepatobiliary phases in magnetic resonance imaging using liverspecific contrast for focal lesions in clinical practice

引用

World Journal of Hepatology 2022年第7期14卷 1459-1469页

作者： Daniel Alvarenga Fernandes Eduardo Andreazza Dal Lago Felipe Aguera Oliver Bruna Melo coelho Loureiro Daniel Lahan Martins Thiago José Penachim Ricardo Hoelz de oliveira Barros José de ArimatéiaBatista Araújo Filho Larissa Bastos Eloy da Costa Áurea Maria oliveira da Silva Elaine Cristina de Ataíde Ilka de Fátima Santana Ferreira Boin Nelson Marcio Gomes Caserta department of Radiology School of Medical SciencesUniversity of Campinas-UNICAMPCampinas 13083-888São PauloBrazi department of Radiology Medical SchoolSão Paulo State University-UNESPBotucatu 18618-970São PauloBrazil Instituto de Radiologia Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo-InRad/HC-FMUSPSão Paulo 05403-010SPBrazil department of Radiology Sírio-Libanês HospitalSão Paulo 05652-900SPBrazil department of Pathology School of Medical SciencesUniversity of Campinas-UNICAMPCampinas 13083-888São PauloBrazil Liver Transplant Unit Department of SurgerySchool of Medical SciencesUniversity of Campinas-UNICAMPCampinas 13083-888São PauloBrazil

BACKGROUND Challenging lesions,difficult to diagnose through non-invasive methods,constitute an important emotional burden for each patient regarding a still uncertain diagnosis(malignant x benign).In addition,from a therapeutic and prognostic point of view,delay in a definitive diagnosis can lead to worse *** of the main innovative trends currently is the use of molecular and functional methods to *** liver-specific contrast agents havebeen developed and studied in recent years to improve the performance of liver magnetic resonance imaging(MRI).More recently,one of the contrast agents introduced in clinical practice is gadoxetic acid(gadoxetate disodium).AIM To demonstrate the value of the hepatobiliary phases using gadoxetic acid in MRI for the characterization of focal liver lesions(FLL)in clinical *** Overall,302 Lesions were studied in 136 patients who underwent MRI exams using gadoxetic acid for the assessment of *** radiologists independently reviewed the MRI exams using four stages,and categorized them on a 6-point scale,from 0(lesion not detected)to 5(definitely malignant).The stages were:stage 1-images without contrast,stage 2-addition of dynamic phases after contrast(analogous to usual extracellular contrasts),stage 3-addition of hepatobiliary phase after 10 min(HBP 10’),stage 4-hepatobiliary phase after 20 min(HBP 20’)in addition to stage *** The interobserver agreement was high(weighted Kappa coefficient:0.81-1)at all stages in the characterization of benign and malignant *** diagnostic weighted accuracy(Az)was 0.80 in stage 1 and was increased to 0.90 in stage *** of the hepatobiliary phase increased Az to 0.98 in stage 3,which was also 0.98 in stage *** The hepatobiliary sequences improve diagnostic *** growing potential in the era of precision medicine,the improvement and dissemination of the method among medical specialties can bring benefits in the management of patients w

关键词： Liver Liver neoplasms Liver transplantation Medical oncology Diagnostic imaging Magnetic resonance imaging

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Formation and Evolution of Wakes in the Spacetime Generated by a Cosmic String in <i>f</i>(<i>R</i>) Theory of Gravity

引用

Journal of High Energy Physics, Gravitation and Cosmology 2022年第1期8卷 85-96页

作者： gabriela Coutinho de Carvalho Maria Emília Xavier Guimarães Pablo oliveira Mesquita Joaquim Lopes Neto Universidade Estadual do Rio de Janeiro Faculdade de Tecnologia Resende Brazil Instituto de Física Universidade Federal Fluminense Av. Litoranea S/N Niterói Brazil Instituto de Fsica Universidade Federal do Rio de Janeiro—UFRJ Av. Athos da Silveira Ramos Cidade Universitária Rio de Janeiro Brazil

The formation and evolution of cosmic string wakes in the framework of a f(R) theory of gravity are investigated in this work. We consider a simple model in which baryonic matter flows past a cosmic string. We treat this problem in the Zel’dovich approximation. We compare our results with previous results obtained in the context of General Relativity and Scalar-Theories of Gravity.

关键词： Topological defects Alternative Theories of Gravity Structure Formation in the Universe

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Successful Treatment with ¹⁷⁷Lutetium-Dotatate and Maintenance Octreotide in a Patient with Esthesioneuroblastoma with Central Nervous System Invasion: Case Report and Review of the Literature

引用

International Journal of Otolaryngology and Head & Neck Surgery 2023年第1期12卷 8-20页

作者： gabriela Dombrowski Laura Fernandes Ferreira Dalcin Francisco Assis coelho Patricia Massucheto Ledesma Daniel Herchenhorn department of Clinical Oncology Instituto D’Or de Pesquisa e Ensino Rio de Janeiro Brazil Clínica de Diagnóstico por Imagem CDPI DASA Instituto D’Or de Pesquisa e Ensino Rio de Janeiro Brazil Clínica de Medicina Nuclear Villela Pedras Clínica de Diagnóstico por Imagem CDPI DASA Rio de Janeiro Brazil

This article presents a case of a patient with relapsed esthesioneuroblastoma (ENB), an aggressive rare tumor that arises from the specialized sensory epithelial olfactory cells in the skull base area, which was initially treated with endoscopic surgery, followed by adjuvant radiotherapy. After local relapse, new surgical approaches and subsequent lines of platin-based chemotherapy were performed. A PET-CT with 68GALIUM DOTATATOC (PET-DOTATOC) showed intense uptake of disease, compatible with the presence of somatostatin receptors, in the face, nodes, liver, bones, and meningeal area. Treatment with 4 cycles of 177Lutetium-Dotatate was performed, followed by maintenance octreotide, with a major radiological and clinical response that is lasting more than 1 year after treatment. This article describes a rare case of a skull-base tumor, with multiple recurrences, in which disease control was achieved with a targeted Peptide Receptor Radionuclide Therapy (PRRT) with 177Lutetium-Dotatate, and discusses factors that could influence the incorporation of this form of therapy. Previous case reports proved the potential efficacy of this therapy usually given for low-grade neuroendocrine tumors and will be carefully reviewed.

关键词： Esthesioneuroblastoma Olfactory Neuroblastoma Peptide Receptor Radionuclide Therapy PRRT 177Lutetium

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Utilization of Pineapple Crown Fiber and Recycled Polypropylene for Production of Sustainable Composites

引用

Journal of Renewable Materials 2020年第10期8卷 1327-1341页

作者： Alexandra Augusta Reichert Mariana Ribas de Sá gabriela Escobar Hochmuller da Silva Cesar Augusto Gonçalves Beatrice AndréRicardo Fajardo Amanda Dantas de oliveira Postgraduate Program in Materials Science and Engineering(PPGCEM) Federal University of Pelotas(UFPel)Pelotas96075-630Brazil Technology development Center(CDTec) Materials EngineeringFederal University of Pelotas(UFPel)Pelotas96075-630Brazil Postgraduate Program in Materials Science and Engineering(PPGCEM) Federal University of São Carlos(UFSCar)São Carlos13565-905Brazil Laboratory of Technology and development of Composites and Polymeric Materials Federal University of Pelotas(UFPel)Pelotas96010-900Brazil

Nowadays,the production of consumer goods is based on the use of non-renewable raw materials,which in recent years has been performing as a problem for the *** the large number of available biofibers in nature,their use in the development of polymeric composites has inevitably emerged,it is also necessary to take into account the countless discarded plastics that still have the potential to be *** this work,fibers were extracted from pineapple crown residues and utilized to compose sustainable composites using recycled polypropylene from cups discarded in the trash as a ***,it is known that for good performance,it is necessary to achieve a good chemical interaction between the fiber and the *** order to improve this interaction,alkaline mercerization treatment was carried out on the surface of the fibers removing some components incompatible with the *** this work,the effect of the mercerization treatment on the properties of the fibers was studied,as well as their interaction with the *** effect of fiber concentration on the mechanical and thermal properties of composites was also *** of 5 and 7 wt%were used for both natural and mercerized fibers.A decrease in the number of degradation stages was observed through thermogravimetry analyses(from four in natural fiber to two in mercerized fibers),showing that the mercerization performed on the fibers was *** increase in the degree of crystallinity of mercerized fibers was also observed through the results of X-ray *** techniques indicate that amorphous compounds,such as hemicellulose and lignin,were partially *** the tensile test,it could be noted that all composites presented higher values of de elastic modulus than recycled polypropylene without added load;however,there were no differences in the elastic modulus between the different types of fibers and load ***,it is interesting to use fibers as r

关键词： Recycling composites polypropylene biofibers pineapple crown

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：