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1000 tulosta hakusanalla Fernando Silva

Biogeographic Patterns of South American Anurans

Biogeographic Patterns of South American Anurans

Tiago S. Vasconcelos; Fernando R. da Silva; Tiago G. dos Santos; Vitor H. M. Prado; Diogo B. Provete

Springer Nature Switzerland AG
2019
sidottu
This book analyzes different facets of anuran amphibian distribution in South America. We integrate alternative biological metrics employing cutting-edge methods to understand the dynamic processes underlying species distribution patterns. By using the modern biogeographic toolbox, we explore how richness gradients, phylogenetic diversity, functional diversity, and range size/endemism distribution of amphibians vary along the continent. Moreover, we present a robust proposal for priority areas for conservation of anurans in South America that maximizes representativeness of distinct biodiversity facets.
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Biogeographic Patterns of South American Anurans

Biogeographic Patterns of South American Anurans

Tiago S. Vasconcelos; Fernando R. da Silva; Tiago G. dos Santos; Vitor H. M. Prado; Diogo B. Provete

Springer Nature Switzerland AG
2020
nidottu
This book analyzes different facets of anuran amphibian distribution in South America. We integrate alternative biological metrics employing cutting-edge methods to understand the dynamic processes underlying species distribution patterns. By using the modern biogeographic toolbox, we explore how richness gradients, phylogenetic diversity, functional diversity, and range size/endemism distribution of amphibians vary along the continent. Moreover, we present a robust proposal for priority areas for conservation of anurans in South America that maximizes representativeness of distinct biodiversity facets.
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Salt Damage in Ceramic Brick Masonry

Salt Damage in Ceramic Brick Masonry

João M.P.Q. Delgado; Fernando A.N. Silva; António C. Azevedo; Ariosvaldo Ribeiro

Springer Nature Switzerland AG
2020
nidottu
This book discusses the effects of soluble mineral salts on ceramic brick masonry walls in Petrolina, a city in Pernambuco, Brazil, located 780 km from the ocean. To shed light on this phenomenon, the authors mapped the pathologies originating from the effects of soluble mineral salts and installed wells to monitor the underground water supply at five locations in the city where the phenomenon most frequently occurs. Further, they analyzed samples of soil, groundwater, and bricks affected by the phenomenon and measured levels of chloride in the atmosphere at these sites. The results obtained indicate that the pathological manifestations are influenced by the high levels of soluble salts observed in the soil and groundwater samples collected, and are not affected by chloride in the atmosphere.
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Diagnostic of Concrete Samples Affected by Internal Swelling Reactions

Diagnostic of Concrete Samples Affected by Internal Swelling Reactions

António C. Azevedo; Fernando A.N. Silva; João M.P.Q. Delgado; Nicole P.S. Souza; Mahfoud Tahlaiti; Abdelhafid Khelidj

Springer Nature Switzerland AG
2021
sidottu
This book offers a complete diagnosis of concrete samples collected from a pile cap block of residential buildings affected by internal swelling reactions. Covering an extensive laboratory campaign to evaluate the transport properties of concrete samples, as well as their physical and chemical composition using advanced techniques to analyse cores extracted from real buildings that have concrete elements affected by internal swelling reactions (ISR). It features several rehabilitation procedures, pile caps repair and rehabilitation design, executed using strengthening procedures to provide the complete restoration of the structural integrity of the element deteriorated. These rehabilitation procedures proved to be a good solution to retrofit pile cap deteriorated by expansions due to internal swelling reactions of concrete. The book also offers a systematic review of the current state of knowledge and it is a valuable resource for scientists, students, and practitioners in various scientific and engineering disciplines, namely, civil and materials engineering, as well as and other interested parties.
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Diagnostic of Concrete Samples Affected by Internal Swelling Reactions

Diagnostic of Concrete Samples Affected by Internal Swelling Reactions

António C. Azevedo; Fernando A.N. Silva; João M.P.Q. Delgado; Nicole P.S. Souza; Mahfoud Tahlaiti; Abdelhafid Khelidj

Springer Nature Switzerland AG
2022
nidottu
This book offers a complete diagnosis of concrete samples collected from a pile cap block of residential buildings affected by internal swelling reactions. Covering an extensive laboratory campaign to evaluate the transport properties of concrete samples, as well as their physical and chemical composition using advanced techniques to analyse cores extracted from real buildings that have concrete elements affected by internal swelling reactions (ISR). It features several rehabilitation procedures, pile caps repair and rehabilitation design, executed using strengthening procedures to provide the complete restoration of the structural integrity of the element deteriorated. These rehabilitation procedures proved to be a good solution to retrofit pile cap deteriorated by expansions due to internal swelling reactions of concrete. The book also offers a systematic review of the current state of knowledge and it is a valuable resource for scientists, students, and practitioners in various scientific and engineering disciplines, namely, civil and materials engineering, as well as and other interested parties.
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Concrete Structures Deteriorated by Delayed Ettringite Formation and Alkali-Silica Reactions

Concrete Structures Deteriorated by Delayed Ettringite Formation and Alkali-Silica Reactions

António C. Azevedo; Fernando A.N. Silva; João M.P.Q. Delgado; Isaque Lira

Springer International Publishing AG
2022
sidottu
This book discusses the behaviour of isolated concrete bottle-shaped struts affected by internal expansion reactions (ISR). For that purpose, the numerical modelling of damaged concrete was performed using the Concrete Damaged Plasticity Model (CDPM) implemented in ABAQUS and validated the model through Sankovich's tests. A procedure to automatically obtain the concrete plasticity and damage parameters, essential for CDPM, was developed in Matlab. The inputs were the characteristic compressive strength of the concrete, the equivalent length of the finite element mesh and the ratio between the plastic and inelastic compressive strains. The results showed that the CDPM could represent the load-bearing mechanisms of isolated concrete bottle-shaped struts for a range of several stress levels to which these elements may be subjected in the panels investigated. The numerical simulations for different expansion levels consistently captured the expected damage profile of the panels and theload corresponding to the formation of the first crack, the estimated crack opening, and the ultimate load. For the panels investigated, the reduction observed in the failure load reached values close to 70%, the increase of the tensile plastic deformation was more than 60%, and the maximum crack opening can reach an increase of 113% when compared with those observed experimentally in panels without internal swelling reactions The book also offers a systematic review of the current state of knowledge and it is a valuable resource for scientists, students, practitioners, and lecturers in various scientific and engineering disciplines, namely, civil and materials engineering, as well as and other interested parties.
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Concrete Structures Deteriorated by Delayed Ettringite Formation and Alkali-Silica Reactions

Concrete Structures Deteriorated by Delayed Ettringite Formation and Alkali-Silica Reactions

António C. Azevedo; Fernando A.N. Silva; João M.P.Q. Delgado; Isaque Lira

Springer International Publishing AG
2023
nidottu
This book discusses the behaviour of isolated concrete bottle-shaped struts affected by internal expansion reactions (ISR). For that purpose, the numerical modelling of damaged concrete was performed using the Concrete Damaged Plasticity Model (CDPM) implemented in ABAQUS and validated the model through Sankovich's tests. A procedure to automatically obtain the concrete plasticity and damage parameters, essential for CDPM, was developed in Matlab. The inputs were the characteristic compressive strength of the concrete, the equivalent length of the finite element mesh and the ratio between the plastic and inelastic compressive strains. The results showed that the CDPM could represent the load-bearing mechanisms of isolated concrete bottle-shaped struts for a range of several stress levels to which these elements may be subjected in the panels investigated. The numerical simulations for different expansion levels consistently captured the expected damage profile of the panels and theload corresponding to the formation of the first crack, the estimated crack opening, and the ultimate load. For the panels investigated, the reduction observed in the failure load reached values close to 70%, the increase of the tensile plastic deformation was more than 60%, and the maximum crack opening can reach an increase of 113% when compared with those observed experimentally in panels without internal swelling reactions The book also offers a systematic review of the current state of knowledge and it is a valuable resource for scientists, students, practitioners, and lecturers in various scientific and engineering disciplines, namely, civil and materials engineering, as well as and other interested parties.
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Ultimate Performance Analysis Tool (uPATO)

Ultimate Performance Analysis Tool (uPATO)

Frutuoso G. M. Silva; Quoc Trong Nguyen; Acácio F.P.P. Correia; Filipe Manuel Clemente; Fernando Manuel Lourenço Martins

Springer International Publishing AG
2018
nidottu
This book introduces the ultimate performance analysis tool (uPATO) as a new software to compute social network metrics in the scope of team sports analysis. The reader will identify the algorithms to test the general properties of the team, the co-dependencies and the centrality levels of players, i.e. to evaluate the individual, sub-group, and team performance analysis. As uPATO tool implements the metrics for all options, namely for unweighted graphs, weighted graphs, unweighted digraphs and weighted digraphs, it is also useful for network analysis into other areas beyond team sports. The book assists the reader to compute the metrics and to use it in different scenarios.
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A Contribuição do Estudo Supervisionado no Processo de Aprendizagem

A Contribuição do Estudo Supervisionado no Processo de Aprendizagem

Maria Severina Gomes Melo Da Roch Rocha; Henrique M L Silva; Fernando L S Correia

Novas Edicoes Academicas
2020
pokkari
A presente pesquisa teve como objetivo principal analisar a pr tica do Estudo Supervisionado da Escola de Refer ncia em Ensino M dio de Timba ba, visando verificar se h inova o pedag gica nesta pr tica e quais as contribui es da mesma para o processo de aprendizagem dos estudantes desta institui o de ensino. Para essa investiga o utilizamos uma abordagem qualitativa, o estudo de caso etnogr fico. Como procedimentos metodol gicos foram utilizados registros fotogr ficos, entrevistas, question rios e an lises de documentos. Participaram como sujeitos da pesquisa um total de 415 alunos e 12 professores. Para fundamenta o te rica deste estudo, utilizamos as concep es propostas por autores de refer ncia nas reas de inova o pedag gica, pr ticas pedag gicas, aprendizagem e mudan as de paradigmas, que nos proporcionaram a discuss o dos principais conceitos te ricos necess rios ao desenvolvimento deste trabalho. OS resultados mostraram contexto em que a pr tica do Estudo Supervisionado contribui diretamente na forma o da autonomia, das forma o cr tica e da co-participa o no processo de ensino e aprendizagem.
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