Búsqueda | SciELO

Abstract The banana is one of the most consumed fruits in the world, but it has little shelf life due to its high water activity. Drying is able to increase shelf life and pre-treatments can optimize the process. The objective was to study the solar drying kinetics and evaluate the effect of pre-treatments on the drying kinetics and physico-chemical quality of 'Prata' bananas. The drying was carried out in a solar dryer and the pre-treatments consisted of immersing the samples in solutions of water, citric acid (1%) and lemon juice (10%). Water loss, drying kinetics, mathematical models and physical-chemical and colorimetric characteristics of fresh and dried bananas were evaluated. The drying rate was higher at the beginning and stabilized after 20 hours. The mathematical model of Midilli and Kucuk was the one that best fit the experimental data. The water content, ascorbic acid and the parameters L *, b *, C * and h ° reduced after drying. Reducing sugars and a * coordinate increased and the acidity was not changed with drying. The solar drying of 'Prata' bananas is a sustainable and economical way to make a product available with a longer shelf life.

https://doi.org/10.1590/fst.75021

Native legumes and spineless cactus in supplementation of goats grazing in Caatinga rangeland: intake, performance, carcass characteristics, and meat quality
Facebook Twitter

Otras redes sociales
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Otras redes

Métrica
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Oliveira, Liberato Lins de

; Maior Junior, Rinaldo José de Souto

; Cavalcanti, Nathallia de Medeiros

; Cardoso, Daniel Barros

; Morais, Jasiel Santos de

; Magalhães, André Luiz Rodrigues

; Melo, Airon Aparecido Silva de

; Silva, Dulciene Karla de Andrade

Acta Scientiarum. Animal Sciences

Métricas del periódico
- Sobre o periódico
- SciELO Analytics

2022, Volumen 44 elocation e56445

Resumen: En | Texto: En | PDF: En

ABSTRACT. The study evaluated the performance, carcass characteristics, tissue composition, and meat quality of goats raised on pasture in the Caatinga rangeland supplemented with Leucena (Leucaena leucocephala) and Sabiá (Mimosa caesapiniifolia) hays associated or not with spineless cactus (Nopalea cochenillifera), and without supplementation. Thirty male castrated goats, no defined breed, with an average body weight of 15.5 kg ± 0.64 were used, distributed in a randomized block design, according to the initial weight of the animals. The experimental period lasted 105 days. The highest intake of DM, OM and CP occurred in the animals supplemented with Leucena hay associated or not with spineless cactus. The intake of NDF was higher (p <0.05) for animals fed only with Leucena and Sabiá hays. The highest intake of TDN was observed for diets, only grazing, and hays associated with spineless cactus. The daily weight gain for goats fed with Leucena hay and spineless cactus was 68.5% higher (p <0.05) than on grazing alone. Consequently, they obtained the highest (p <0.05) weights and yields of carcasses, shoulder, loin, and leg cuts, conformation and finishing scores, leg muscle index, and % fat in the leg of goats. The meat quality did not differ. The supplementation with Leucena hay associated with spineless cactus improves performance, weights, and yields of the carcass, commercial cuts, leg muscle of goats grazing in the Caatinga rangeland.

https://doi.org/10.4025/actascianimsci.v44i1.56445

Citizen science as a tool for collaborative site-specific oil spill mapping: the case of Brazil
Facebook Twitter

Otras redes sociales
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Otras redes

Métrica
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

SOUTO, RAQUEL DEZIDÉRIO

; BATALHÃO, ANDRÉ C. S.

Anais da Academia Brasileira de Ciências

Métricas del periódico
- Sobre o periódico
- SciELO Analytics

2022, Volumen 94 elocation e20211262

Resumen: En | Texto: En | PDF: En

Abstract Many maritime disasters lead to oil pollution, which undermines ecosystem balance, human health, the prosperity of countries and coastal areas across borders, and people’s livelihoods. This is a problem that affects the whole world. Governments must strive to ensure that operations in the marine environment are safe and avoid oil pollution by adopting methods that anticipate future scenarios to mitigate the effects of this pollution when it occurs. This study investigates a method of managing contaminated coastal areas, aiming to contribute to the management of the environmental crisis caused by disasters through the use of online collaborative mapping by volunteer collaborators. Volunteer collaborators have been sending georeferenced data and photographs of locations affected by pollution. This information is processed and printed on a cartographic basis created by the web-mapping platform, Google MyMaps©. Photos of 90 locations were plotted on the map, and the pictures demonstrate that the oil slicks that reached the Brazilian coast had very different shapes and consistency. This research can contribute as a participatory monitoring tool during and after oil spills, promoting the oriented preservation of marine ecosystems through citizen science.

https://doi.org/10.1590/0001-3765202220211262

Posicionamento Brasileiro sobre o Uso da Multimodalidade de Imagens na Cardio-Oncologia – 2021
Facebook Twitter

Otras redes sociales
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Otras redes

Métrica
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Melo, Marcelo Dantas Tavares de

; Paiva, Marcelo Goulart

; Santos, Maria Verônica Câmara

; Rochitte, Carlos Eduardo

; Moreira, Valéria de Melo

; Saleh, Mohamed Hassan

; Brandão, Simone Cristina Soares

; Gallafrio, Claudia Cosentino

; Goldwasser, Daniel

; Gripp, Eliza de Almeida

; Piveta, Rafael Bonafim

; Silva, Tonnison Oliveira

; Santo, Thais Harada Campos Espirito

; Ferreira, Waldinai Pereira

; Salemi, Vera Maria Cury

; Cauduro, Sanderson A.

; Barberato, Silvio Henrique

; Lopes, Heloísa M. Christovam

; Pena, José Luiz Barros

; Rached, Heron Rhydan Saad

; Miglioranza, Marcelo Haertel

; Pinheiro, Aurélio Carvalho

; Vrandecic, Bárbara Athayde Linhares Martins

; Cruz, Cecilia Beatriz Bittencourt Viana

; Nomura, César Higa

; Cerbino, Fernanda Mello Erthal

; Costa, Isabela Bispo Santos da Silva

; Coelho Filho, Otavio Rizzi

; Carneiro, Adriano Camargo de Castro

; Burgos, Ursula Maria Moreira Costa

; Fernandes, Juliano Lara

; Uellendahl, Marly

; Calado, Eveline Barros

; Senra, Tiago

; Assunção, Bruna Leal

; Freire, Claudia Maria Vilas

; Martins, Cristiane Nunes

; Sawamura, Karen Saori Shiraishi

; Brito, Márcio Miranda

; Jardim, Maria Fernanda Silva

; Bernardes, Renata Junqueira Moll

; Diógenes, Tereza Cristina

; Vieira, Lucas de Oliveira

; Mesquita, Claudio Tinoco

; Lopes, Rafael Willain

; Segundo Neto, Elry Medeiros Vieira

; Rigo, Letícia

; Marin, Valeska Leite Siqueira

; Santos, Marcelo José

; Grossman, Gabriel Blacher

; Quagliato, Priscila Cestari

; Alcantara, Monica Luiza de

; Teodoro, José Aldo Ribeiro

; Albricker, Ana Cristina Lopes

; Barros, Fanilda Souto

; Amaral, Salomon Israel do

; Porto, Carmen Lúcia Lascasas

; Barros, Marcio Vinícius Lins

; Santos, Simone Nascimento dos

; Cantisano, Armando Luís

; Petisco, Ana Cláudia Gomes Pereira

; Barbosa, José Eduardo Martins

; Veloso, Orlando Carlos Glória

; Spina, Salvador

; Pignatelli, Ricardo

; Hajjar, Ludhmilla Abrahão

; Kalil Filho, Roberto

; Lopes, Marcelo Antônio Cartaxo Queiroga

; Vieira, Marcelo Luiz Campos

; Almeida, André Luiz Cerqueira

Arquivos Brasileiros de Cardiologia

Métricas del periódico
- Sobre o periódico
- SciELO Analytics

Oct 2021, Volumen 117 Nº 4 Paginas 845 - 909

Resumen: Pt En | Texto: Pt En | PDF: Pt | PDF: En

https://doi.org/10.36660/abc.20200266 103 descargas

Posicionamento sobre Indicações e Reintrodução dos Métodos de Imagem Cardiovascular de Forma Segura no Cenário da COVID-19 – 2021
Facebook Twitter

Otras redes sociales
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Otras redes

Métrica
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Beck, Adenalva Lima de Souza

; Barberato, Silvio Henrique

; Almeida, André Luiz Cerqueira de

; Grau, Claudia R. Pinheiro de Castro

; Lopes, Marly Maria Uellendahl

; Lima, Ronaldo de Souza Leão

; Cerci, Rodrigo Júlio

; Albricker, Ana Cristina Lopes

; Barros, Fanilda Souto

; Oliveira, Alessandra Joslin

; Lira Filho, Edgar Bezerra de

; Miglioranza, Marcelo Haertel

; Vieira, Marcelo Luiz Campos

; Pena, José Luiz Barros

; Strabelli, Tânia Mara Varejão

; Bihan, David Costa de Souza Le

; Tsutsui, Jeane Mike

; Rochitte, Carlos Eduardo

Arquivos Brasileiros de Cardiologia

Métricas del periódico
- Sobre o periódico
- SciELO Analytics

Mar 2021, Volumen 116 Nº 3 Paginas 659 - 678

Resumen: Pt En | Texto: Pt En | PDF: Pt | PDF: En

https://doi.org/10.36660/abc.20210133 299 descargas

Psychiatric hospitalizations by the Unified Health System in Brazil between 2000 and 2014
Facebook Twitter

Otras redes sociales
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Otras redes

Métrica
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Rocha, Hugo André da

; Reis, Ilka Afonso

; Santos, Marcos Antônio da Cunha

; Melo, Ana Paula Souto

; Cherchiglia, Mariangela Leal

Revista de Saúde Pública

Métricas del periódico
- Sobre o periódico
- SciELO Analytics

2021, Volumen 55 elocation 14

Resumen: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO OBJETIVO Caracterizar o perfil dos pacientes que foram internados por transtornos mentais e comportamentais pelo Sistema Único de Saúde (SUS) no Brasil entre 2000 e 2014, bem como verificar como aspectos da nova política de saúde mental influenciaram a taxa de pacientes internados no referido período. MÉTODOS Estudo de coorte prospectiva não concorrente utilizando dados secundários de pacientes internados com diagnóstico primário de transtornos mentais e comportamentais entre 01/01/2000 e 31/12/2014. Foram selecionadas variáveis sociodemográficas, clínicas e de características do hospital, além disso, foram calculadas as taxas gerais de pacientes internados segundo motivo de internação, tipo de hospital, natureza jurídica e número de internações de cada paciente por ano. Foi testada a associação entre taxas de pacientes internados, número de leitos psiquiátricos por ano e número de Centros de Atenção Psicossocial por ano. RESULTADOS Foram selecionados 1.549.298 pacientes dos quais os diagnósticos mais frequentes na primeira internação foram os transtornos devidos ao uso de substâncias psicoativas, seguidos por esquizofrenia e transtornos de humor. A mediana de internações por paciente foi de 1,9 e a de tempo de internação por paciente foi de 29 dias. A taxa geral de pacientes internados foi reduzida à quase metade no período. O número de leitos por ano apresentou associação positiva com as taxas de pacientes internados, e o número de CAPS por ano teve associação negativa com algumas taxas de pacientes internados. CONCLUSÃO Verificou-se que, mesmo diante de um contexto de adversidades, a Política Nacional de Saúde Mental avançou em suas metas de reduzir progressivamente os leitos hospitalares e aumentar a oferta de serviços substitutivos de tal modo que ambas as estratégias foram associadas à redução das taxas de pacientes internados. Contudo, as mudanças foram percebidas com maior intensidade nos primeiros anos de implantação da política, tornando-se menos pujante nos últimos anos.

ABSTRACT OBJECTIVE To characterize the profile of patients hospitalized for mental and behavioral disorders by the Unified Health System (SUS) in Brazil between 2000 and 2014, and to verify how aspects of the new mental health policy influenced the rate of hospitalized patients in that period. METHODS Non-concurrent prospective cohort study using secondary data from inpatients with a primary diagnosis of mental and behavioral disorders between 01/01/2000 and 12/31/2014. Sociodemographic, clinical, and hospital characteristics variables were selected. Overall rates of hospitalized patients were calculated according to reason for admission, type of hospital, legal nature, and number of admissions per year for each patient. The association between rates of hospitalized patients, number of psychiatric beds per year, and number of Psychosocial Care Centers per year were tested. RESULTS We selected a total of 1,549,298 patients, whose most frequent diagnoses on first admission were psychoactive substance use disorders, followed by schizophrenia and mood disorders. The median of hospitalizations per patient was 1.9 and the length of stay per patient was 29 days. The overall rate of hospitalized patients was reduced by almost half in the period. The number of beds per year was positively associated with the rates of hospitalized patients; the number of CAPS per year was negatively associated with some rates of hospitalized patients. CONCLUSION Even in the face of adversity, the National Mental Health Policy has advanced in its goal of progressively reducing hospital beds and increasing the supply of substitute services such that both strategies were associated with the reduced inpatient rates. But the changes were felt with greater intensity in the first years of the policy’s implementation, becoming less pronounced in recent years.

https://doi.org/10.11606/s1518-8787.2021055002155 386 descargas

Psychiatric hospitalizations by the Unified Health System in Brazil between 2000 and 2014
Facebook Twitter

Otras redes sociales
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Otras redes

Métrica
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Rocha, Hugo André da

; Reis, Ilka Afonso

; Santos, Marcos Antônio da Cunha

; Melo, Ana Paula Souto

; Cherchiglia, Mariangela Leal

Revista de Saúde Pública

Métricas del periódico
- Sobre o periódico
- SciELO Analytics

2021, Volumen 55 elocation 14

Resumen: Pt En | Texto: Pt En | PDF: Pt | PDF: En

https://doi.org/10.11606/s1518-8787.2021055002155

First Successful Isolated Intestinal Transplant in a Brazilian Series
Facebook Twitter

Otras redes sociales
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Otras redes

Métrica
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Andraus, Wellington

; Pinheiro, Rafael Soares

; Fortunato, Allana Christina

; Galvão, Flavio Henrique Ferreira

; Arantes Junior, Rubens Macedo

; Waisberg, Daniel Reis

; Lee, Andre Dong

; Rocha, Mariana Hollanda Martins da

; Nacif, Lucas Souto

; Santos, Vinicius Rocha

; Ducatti, Liliana

; Martino, Rodrigo Bronze de

; Haddad, Luciana Bertocco de Paiva

; Tanigawa, Ryan Yukimatsu

; Bezerra, Regis O.F.

; Song, Alice Tung Wan

; Carneiro-D'Albuquerque, Luiz Augusto

Clinics

Métricas del periódico
- Sobre o periódico
- SciELO Analytics

2021, Volumen 76 elocation e3016

Resumen: En | Texto: En | PDF: En

https://doi.org/10.6061/clinics/2021/e3016 26 descargas

SISTEMA ROBÓTICO DE BAIXO CUSTO PARA PREPARAÇÃO DE FILMES POR LAYER-BY-LAYER
Facebook Twitter

Otras redes sociales
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Otras redes

Métrica
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Polo, Giovanne Santin

; Souto, Lucas Polimante

; Polo, André Sarto

Química Nova

Métricas del periódico
- Sobre o periódico
- SciELO Analytics

2021, Volumen 44 Nº 9 Paginas 1192 - 1195

Resumen: Pt | Texto: Pt | PDF: Pt

LOW-COST ROBOTIC SYSTEM FOR PREPARATION OF LAYER-BY-LAYER FILMS. Layer-by-Layer is an efficient technique for the deposition of thin films used in several devices such as sensors, solar cells, and other systems. A robotic system improves the process reproducibility, be a stand-alone system, and does not demand human participation during the deposition process. On the other hand, the commercially available equipment is expensive. In this work, we present a low-cost robotic system built by using materials commonly found that allows performing several bathing, drying steps and deposition cycles of the substrates necessary for the formation of LbL films. This technical note presents the electronic assembly scheme and the program developed for an experiment. The number of baths, the time necessary for the deposition, and repetitions to result in the formation of the desired film; can be easily modified in this program. The films prepared in this experiment were successfully employed for the preparation of compact layers for perovskite solar cells. Therefore, the equipment can be easily customized to the needs of each research group that uses it.

https://doi.org/10.21577/0100-4042.20170762 22 descargas

10.

Brazil in the face of new SARS-CoV-2 variants: emergencies and challenges in public health
Facebook Twitter

Otras redes sociales
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Otras redes

Métrica
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Marquitti, Flavia Maria Darcie

; Coutinho, Renato Mendes

; Ferreira, Leonardo Souto

; Borges, Marcelo Eduardo

; Portella, Tatiana Pineda

; Silva, Rafael Lopes Paixão da

; Canton, Otavio

; Poloni, Silas

; Franco, Caroline

; Coelho, Verônica

; Barberia, Lorena

; Bolle, Monica de

; Boing, Alexandra Crispim

; Donalisio, Maria Rita

; Boing, Antonio Fernando

; Silva, Antônio Augusto Moura da

; Prado, Paulo Inácio

; Veras, Maria Amélia de Sousa Mascena

; Kraenkel, Roberto André

Revista Brasileira de Epidemiologia

Métricas del periódico
- Sobre o periódico
- SciELO Analytics

2021, Volumen 24 elocation e210022

Resumen: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO: Este artigo discute a situação epidêmica da COVID-19 no Brasil diante do aparecimento de uma nova linhagem, chamada P.1, mais transmissível e com possível reinfecção associada. Tendo em vista o colapso do atendimento hospitalar em Manaus em janeiro de 2021 e os resultados de três preprints recentes, dos quais todos encontraram maior transmissibilidade da variante P.1, propomos algumas ações urgentes: o estabelecimento de uma vigilância genômica baseada em diagnóstico em múltiplos passos, iniciando com os testes do tipo transcrição reversa seguida de reação em cadeia da polimerase (RT-PCR) até o sequenciamento; um esforço imediato na identificação de reinfecções associadas à nova variante, com a atualização dos protocolos de definição; e estudos sobre a eficácia das vacinas disponíveis no Brasil na vigência da nova variante. Propomos, ademais, o aprimoramento do sistema de vigilância em saúde brasileiro para que seja articulado com a vigilância genômica, de forma a responder mais oportunamente a emergências futuras. Chamamos os agentes públicos implicados na vigilância em saúde para que compartilhem dados e informações referentes à epidemia de forma clara, rápida e transparente. Finalmente propomos maior engajamento na cooperação interinstitucional de todos os envolvidos na resposta e produção de conhecimento sobre a pandemia em nosso país.

ABSTRACT: This article discusses the epidemic situation of Covid-19 in Brazil, in the face of the emergence of a new strain called P.1, which is more transmissible and may be associated with reinfection. Given the collapse of hospital care in Manaus in January 2021 and the results of three recent preprints, each that reports increased transmissibility of the P.1 variant, we propose some urgent measures. Genomic surveillance based on multi-step diagnostics, starting with RT-PCR type tests and up to sequencing, should be established. Efforts to identify reinfections associated with this variant and the update of its definition in protocols should be prioritized, and studies on the efficacy of currently available vaccines in Brazil concerning the new variant should be conducted. We also propose improving the Brazilian health surveillance system such that genomic surveillance is coordinated and thereby better able to respond to future emergencies in a more timely fashion. We call on the public agents involved in health surveillance to share data and information regarding the epidemic in a clear, fast and transparent way. Finally, we propose a greater engagement in inter-institutional cooperation of all those involved in the response and production of knowledge about the pandemic in our country.

https://doi.org/10.1590/1980-549720210022

11.

Brazil in the face of new SARS-CoV-2 variants: emergencies and challenges in public health
Facebook Twitter

Otras redes sociales
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Otras redes

Métrica
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Marquitti, Flavia Maria Darcie

; Coutinho, Renato Mendes

; Ferreira, Leonardo Souto

; Borges, Marcelo Eduardo

; Portella, Tatiana Pineda

; Silva, Rafael Lopes Paixão da

; Canton, Otavio

; Poloni, Silas

; Franco, Caroline

; Coelho, Verônica

; Barberia, Lorena

; Bolle, Monica de

; Boing, Alexandra Crispim

; Donalisio, Maria Rita

; Boing, Antonio Fernando

; Silva, Antônio Augusto Moura da

; Prado, Paulo Inácio

; Veras, Maria Amélia de Sousa Mascena

; Kraenkel, Roberto André

Revista Brasileira de Epidemiologia

Métricas del periódico
- Sobre o periódico
- SciELO Analytics

2021, Volumen 24 elocation e210022

Resumen: Pt En | Texto: Pt En | PDF: Pt | PDF: En

https://doi.org/10.1590/1980-549720210022 1287 descargas

12.

Hemodynamics, baroreflex index and blood biomarkers of a patient who died after being affected by COVID-19: case report
Facebook Twitter

Otras redes sociales
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Otras redes

Métrica
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Ribas, Valdenilson Ribeiro

; Ribas, Renata de Melo Guerra

; Barros, Mayara Guerra Souto

; Ribas, Ketlin Helenise dos Santos

; Adamy Neto, Nery

; Barros, Mayanna Guerra Souto

; Martins, Hugo André de Lima

Hematology, Transfusion and Cell Therapy

Métricas del periódico
- Sobre o periódico
- SciELO Analytics

Sep 2020, Volumen 42 Nº 3 Paginas 206 - 211

Resumen: En | Texto: En | PDF: En

https://doi.org/10.1016/j.htct.2020.06.004 324 descargas

13.

Metals Phytoextraction by Cordia africana from Soils Contaminated with Oil Drilling Waste
Facebook Twitter

Otras redes sociales
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Otras redes

Métrica
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Amaral Sobrinho, Nelson Moura Brasil do

; Andrade, André Fernão Martins de

; Lima, Erica Souto Abreu

; Zonta, Everaldo

; Magalhães, Márcio Osvaldo Lima

Floresta e Ambiente

Métricas del periódico
- Sobre o periódico
- SciELO Analytics

2020, Volumen 27 Nº 1 elocation e20170852

Resumen: En | Texto: En | PDF: En

Abstract Oil exploration and production generate large quantities of waste, which may contain contaminants such as barium and lead. Therefore, more studies aimed at decreasing the levels of heavy metals in contaminated sites, using methods such as phytoremediation, are needed. In a preliminary assay, samples of soil contaminated with oil drilling waste were incubated with different concentrations (2 or 6 mmol L-1) of ethylenediaminetetraacetic acid (EDTA). Subsequently, an experiment was conducted in a greenhouse to evaluate the phytoremediation potential of the tree Cordia africana. EDTA induced mobilization and translocation of lead, manganese, and iron into the C. africana leaves but had no effect on barium. The quantity of heavy metal contaminants accumulated in the plant vegetative parts showed that C. africana cannot be used as a phytoextractor for the tested metals; however, it can be used as a phytostabilizer.

https://doi.org/10.1590/2179-8087.085217 467 descargas

14.

Efeitos de atributos ambientais na biodiversidade de formigas sob diferentes usos do solo
Facebook Twitter

Otras redes sociales
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Otras redes

Métrica
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Amaral, Gustavo Correiro do

; Vargas, André Barbosa

; Almeida, Fábio Souto

Ciência Florestal

Métricas del periódico
- Sobre o periódico
- SciELO Analytics

Jun 2019, Volumen 29 Nº 2 Paginas 660 - 672

Resumen: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Resumo O objetivo foi avaliar a influência de variáveis ambientais sobre a fauna de formigas em um fragmento de floresta nativa e em áreas cultivadas. Os dados foram coletados no município de Seropédica - RJ, nas estações chuvosa e seca, em um cultivo de bananas (Musa pariadisiaca L.), uma agrofloresta, um cafezal (Coffea conephora Pierre) sombreado com Gliricidia sepium (Jacq.) e um fragmento de floresta (8 ha) em estágio intermediário de sucessão secundária. Para a amostragem, foram utilizadas armadilhas de queda tipo pitfall e extratores de Winkler. Foram coletadas 53 espécies de formigas, ocorrendo maior riqueza de espécies na agrofloresta (38 espécies), seguida do cafezal (31 espécies), floresta secundária (29 espécies) e plantação de bananeiras (28 espécies). Na estação seca houve o efeito do tipo de uso do solo e da profundidade de serapilheira sobre a riqueza e diversidade de espécies de formigas. Nas duas estações, a composição de espécies de formigas variou significativamente entre todas as áreas estudadas. Os sistemas agroflorestais funcionam como alternativa às monoculturas pela diversidade de espécies cultivadas e estratos vegetais que apresentam. Neste sentido, o aumento da heterogeneidade estrutural do ambiente e da profundidade de serapilheira, em áreas cultivadas na estação seca, proporciona maior riqueza e diversidade de espécies de formigas, além de mudanças na composição de espécies.

Abstract The objective was to evaluate the influence of environmental variables on the ant fauna, in cultivated areas and in a native forest fragment. The data were collected in the municipality of Seropédica, Rio de Janeiro state, in the rainy and dry seasons, in a banana plantation (Musa pariadisiaca L.), an agroforest, a coffee plantation (Coffea conephora Pierre) shaded with Gliricidia sepium (Jacq.) and a forest fragment (8 ha) in the intermediate stage of secondary succession. For the sampling, soil pitfall traps and the Winkler extractor were used. A total of 53 species were collected in the present study. The highest species richness was observed in the agroforestry (38 species), followed by shaded coffee (31 species), secondary forest (29 species) and banana plantation (28 species). In the dry season there was effect of land use type and leaf litter depth on the richness and diversity of ant species. In both seasons, ant species composition varied significantly among all the studied areas. The agroforestry systems are important alternatives to monocultures due to their diversity of cultivated species and plant strata. Thus, the increase of the structural heterogeneity of the environment and the leaf litter depth, in cultivated areas in the dry season, may lead to greater species richness and diversity as well as changes in the species composition.

https://doi.org/10.5902/1980509833811 756 descargas

15.

Effect of grape seed extract-containing phosphoric acid formulations on bonding to enamel and dentin
Facebook Twitter

Otras redes sociales
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Otras redes

Métrica
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

PALUDO, Tamara

; MARCONDES, Maurem Leitão

; SOUTO, André Arigony

; LOPES, Guilherme Carpena

; LOGUÉRCIO, Alessandro Dourado

; SPOHR, Ana Maria

Brazilian Oral Research

Métricas del periódico
- Sobre o periódico
- SciELO Analytics

2019, Volumen 33 elocation e098

Resumen: En | Texto: En | PDF: En

Abstract The aim was to evaluate the effect of 2% grape seed extract (GSE) containing phosphoric acid (PhA) on the bond strength to enamel and dentin. The control group was 37% PhA. The following three PhA formulations with 2% GSE and 20% ethanol were obtained: GSE5 = 5% PhA; GSE10 = 10% PhA; and GSE20 = 20% PhA. The enamel and dentin surfaces of molars were etched with the acid solutions, followed by Scotchbond Multi-Purpose adhesive and composite resin application. The tensile bond strength (TBS) test evaluated the bond to enamel after 24 h, and the microtensile bond strength (μTBS) test evaluated the bond to dentin after 24 h and 12-month water storage. Etched enamel and dentin were observed by scanning electron microscopy (SEM) and atomic force microscopy (AFM), respectively. The TBS data were submitted to one-way ANOVA, while µTBS data were submitted to two-way ANOVA and Tukey’s test (α = 0.05). The TBS (MPa) to enamel did not significantly differ among the control (48.1 ± 15.7), GSE5 (46.1 ± 9.6), GSE10 (49.8 ± 13.6) and GSE20 (44.1 ± 11.9) groups (p = 0.537). The µTBS (MPa) to dentin of the control (28.4 ± 14.4) and GSE20 (24.1 ± 8.1) groups were significantly higher than those of the GSE5 (16.8 ± 7.4) and GSE10 (17.5 ± 6.6) groups at 24 h (p < 0.006). After 12-month storage, only GSE5 (21.0 ± 7.8) and GSE10 (17.6 ± 8.0) did not show significantly decreased μTBS (p > 0.145). SEM micrographs showed a shallower enamel etching pattern for GSE5. AFM images showed the formation of collagenous globular structures for GSE5 and GSE10. The different acid solutions did not influence the TBS to enamel, and the µTBS to dentin was stable over time when dentin was etched with GSE5 and GSE10.

https://doi.org/10.1590/1807-3107bor-2019.vol33.0098 1023 descargas

Mostrar

itens por página

Página de 4 Próxima

Seleccione uno o más resultados

Todos Ordem alfabética

Resultados

Gráfico comparativo Descargar CSV

Visualizar estadísticas de

Enviar resultado

E-mail do(s) destinatário(s)*

Utilize ; (punto y coma) para más de un correo.

Enviar por correo-e

Esta página

Registros seleccionados

Todas las referencias (max. 300)

Su email

Asunto

Comentarios

Formato de exportación:

RIS (para EndNote, ProCite, Reference Manager, RefWorks, Citavi, etc.)

BibTeX

Citación

CSV (para Excel, etc)

Exportar:

Esta página

Itens seleccionados

Todas las referencias (max. 2000)

Sem resultados

No se encontraron documentos para su búsqueda

Glosario y ayuda para la búsqueda

Ud. puede enriquecer su búsqueda de una forma muy sencilla. Use los índices de búsqueda combinados con los conectores (AND u OR) para especificar su busca.

Por ejemplo, si desea buscar artículos acerca de
casos de dengue en el Brasil en 2015, use:
ti:dengue and publication_year:2015 and aff_country:Brasil

A continuación se muestra la lista completa de los índices de búsqueda que se pueden utilizar:

Cód. del Índice	Elemento
ti	título del articulo
au	autor
kw	palabras clave del artículo
subject	asunto (palabras del título, resumen y palabras clave)
ab	resumen
ta	título abreviado de la revista (ej. Cad. Saúde Pública)
journal_title	título completo de la revista (ej. Cadernos de Saúde Pública)
la	código de idioma de publicación (ej. pt - Portugués, es - Español)
type	tipo de documento
pid	identificador de la publicación
publication_year	año de publicación del artículo
sponsor	financiador
aff_country	código del país de la afiliación del autor
aff_institution	institución de filiación del autor
volume	volumen del artículo
issue	número del artículo
elocation	elocation
doi	número DOI
issn	ISSN de la revista
in	código de la colección SciELO (ej. scl - Brasil, col - Colômbia)
use_license	código de licencia de uso del artículo

SciELO - Scientific Electronic Library Online
Rua Dr. Diogo de Faria, 1087 – 9º andar – Vila Clementino 04037-003 São Paulo/SP - Brasil
Email: scielo@scielo.org

Todo el contenido de este sitio www.scielo.br, excepto dónde está identificado, está bajo una Licencia de Atribución Creative Commons.
sepa más »