Pesquisa | SciELO

Resumo O objetivo do presente trabalho foi avaliar alternativas para a modelagem hipsométrica generalista de eucalipto via regressão linear, com a inclusão de índices de competição independentes da distância como variável preditora. Os dados utilizados foram provenientes de 34 parcelas distribuídas em quatro unidades de manejo florestal com 72 meses de idade. Calcularam-se 7 índices de competição independentes da distância. Avaliou-se o desempenho preditivo de 16 modelos hipsométricos generalistas, sendo propostos 14 modelos de dupla entrada (DAP e índice de competição). Todas as equações geradas foram biologicamente consistentes. Diante da ausência de informações da altura de árvores dominantes, a modelagem generalista pode ser melhor viabilizada com a inclusão do índice IC4, que representa a área basal de árvores vizinhas competidoras. Conclui-se que a inclusão de índices de competição em modelos hipsométricos ampliam a capacidade de generalização de equações para talhões de eucalipto com distintas capacidades produtivas. O índice de competição IC4 favorece a qualidade de ajuste e desempenho preditivo da modelagem hipsométrica nos sítios estudados.

Abstract This study aimed to evaluate alternatives for general hypsometric modeling of eucalypt through linear regression, with inclusion of distance-independent competition indices as a predictor variable. The data was collected from 34 plots distributed in four 72-month-old forest management units. Seven distance-independent competition indices were calculated. The study evaluated the predictive performance of 16 general hypsometric models, and 14 double-entry models (DAP and competition index) were proposed. All equations generated were biologically consistent. Given the lack of information on the height of dominant trees, general modeling can be better employed with inclusion of the IC4 index, which represents basal area of neighboring competing trees. It is concluded that the inclusion of competition indices in hypsometric models increases generalization capacity of equations for eucalyptus stands with different productive capacities. The IC4 competition index enhances fit quality and predictive performance of the hypsometric modeling in the study sites.

https://doi.org/10.18845/rfmk.v20i47.6816

Utilización de imágenes de pacientes para marketing médico
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics

Ivankovics, Ivan Gregório

; Hurtado Madueno Júnior, Carlos Rafael

; Goulart Deziderio, Aline

; Silva Costa, Débora Caroline

; Batista da Silva Mesquita, Lázaro José

; dos Santos Rodrigues Vieira, Gislaine

; Batista Falqueti, Airton

; Nunes, Rui

Acta bioethica

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Out 2023, Volume 29 Nº 2 Páginas 245 - 248

Resumo: En Es Pt | Texto: En Es Pt | PDF: En | PDF: Es | PDF: Pt

Abstract: The use of imagem strategies in medical socieal networks is increasingly widespread, meeting the ethical limit established by the CEM. Knowing this, the present study sought to understand the problem of patient exposure in medical social networks. For this, a literature review was carried out from the Scientific Electronic Library Online (Scielo), Pubmed, UpToDate, LILACS databases, articles in English, Spanish and Portuguese published from 2018 onwards were included. Thus, a tendency was noticed in some cities to create laws to regulate this exposure, given that the use of images has become routine in medical advertising, as a way to demonstrate results. However, this practice is greatly accompanied by ethical failures as recommended by the CFM.

Resumen: El uso de estrategias de imagen en las redes sociales médicas está cada vez más extendido, cumpliendo el límite ético establecido por el CEM. Sabiendo esto, el presente estudio buscó comprender el problema de la exposición de los pacientes en las redes sociales médicas. Para ello, se realizó una revisión bibliográfica a partir de las bases Scientific Electronic Library Online (Scielo), PubMED, UpToDate, LILACS, incluyendo artículos en inglés, español y portugués publicados a partir de 2018. Así, se percibió en algunas ciudades la tendencia a crear leyes para regular esta exposición, dado que el uso de imágenes se ha vuelto rutinario en la publicidad médica, como una forma de demostrar resultados. Sin embargo, esta práctica está muy acompañada de faltas éticas como recomienda el CFM.

Resumo: A utilização das estratégias de imagem nas redes sociais médicas está cada vez mais disseminada, encontrando-se no limite ético estabelecido pelo CEM. Sabendo disso, o presente estudo buscou entender a problemática da exposição do paciente nas redes sociais médicas. Para isso, foi feita uma revisão da literatura a partir das bases Scientific Eletronic Library Online (Scielo), PubMED, UpToDate, LILACS, foram incluídos artigos em inglês, espanhol e português publicados a partir de 2018. Assim, percebeu-se em algumas cidades a tendência de criar leis para regular essa exposição, haja vista que a utilização de imagens tornou-se rotineira na propaganda médica, como forma demonstrar resultados. Todavia, tal prática vem acompanhada grandemente de falhas éticas segundo o preconizado pelo CFM.

Muerte digna en la unidad de cuidados intensivos: ¿cómo se ha llevado a cabo?
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics

Ivankovics, Ivan Gregório

; Rodrigues Vieira, Gislaine dos Santos

; Faleiro, Lucas Freitas

; de Moraes Vieira, Thiago Felipe

; Borges Romanini, Wdmila Gabriela

; Silva do Nascimento, Weylla

; Hurtado Madueno Júnior, Carlos Rafael

; Batista Falqueti, Airton

; Nunes, Rui

Acta bioethica

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Out 2023, Volume 29 Nº 2 Páginas 213 - 217

Resumo: En Es Pt | Texto: En Es Pt | PDF: En | PDF: Es | PDF: Pt

Abstract: The concept of dignified death or a good death has been widespread among health professionals, who routinely deal with it and experience the ethical dilemma about what should really be done in the face of a terminally ill patient. Given this, the present study aims to show the concepts and how cases of terminally ill patients have been conducted within the Intensive Care Units (ICU). To argue about the application and functionality of euthanasia, orthothanasia and dysthanasia in ICUs, a literature review of 14 articles was carried out. It was concluded that the knowledge that the professional has in relation to these themes needs to be taken into account and to distinguish the specific theme that is addressed, not forgetting to emphasize the rights provided for in the constitution and the well-being of the paciente and his family.

Resumen: El concepto de “muerte digna” o “buena muerte” ha sido muy difundido entre los profesionales de la salud, que lo manejan de manera rutinaria y experimentan el dilema ético sobre lo que realmente se debe hacer ante un enfermo terminal. Ante esto, el presente estudio tiene como objetivo mostrar los conceptos y cómo los casos de pacientes terminales han sido tratados dentro de las Unidad de Cuidados Intensivos (UCI). Para argumentar respecto de la aplicación y funcionalidad de la eutanasia, la ortotanasia y la distanasia en las UCI, se realizó una revisión bibliográfica de 14 artículos. Se concluyó que se debe considerar el conocimiento del profesional con relación a estos temas y distinguir el tema específico que se aborda, sin olvidar enfatizar los derechos previstos en la Constitución y el bienestar del paciente y su familia.

Resumo: O conceito de morte digna ou boa morte tem sido difundido entre os profissionais de saúde, os quais lidam com isso rotineiramente e vivem o dilema ético sobre o que realmente deve ser feito diante de um paciente terminal. Visto isso, o presente estudo visa mostrar os conceito e como tem sido conduzido os casos de pacientes em fase terminal dentro das Unidades de Terapia Intensiva (UTI). Para argumentar sobre a aplicação e a funcionalidade da eutanasia, ortotanásia e distanásia nas UTIs foi realizada uma revisão bibliográfica de 14 artigos. Concluiu-se que precisa ser levado em consideração o conhecimento que o profissional tem em relação a esses temas e distinguir a temática específica que é tratado, não esquecendo de salientar os direitos previstos na constituição e o bem-estar do paciente e de sua família.

Cytotoxicity evaluation of haloperidol, clozapine and a new molecule with antipsychotic potential, PT-31, in NIH-3T3 cells
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Kayser, Juliana Machado

; Rodrigues, Gabriela Zimmermann Prado

; Thomazi, Carlos Henrique

; Hansen, Alana Witt

; Moreira, Marina Griebeler

; Pitta, Marina Galdino da Rocha

; Pitta, Ivan da Rocha

; Ziulkoski, Ana Luiza

; Betti, Andresa Heemann

Brazilian Journal of Pharmaceutical Sciences

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2023, Volume 59 elocation e21738

Resumo: En | Texto: En | PDF: En

Abstract Schizophrenia is an illness that affects 26 million people worldwide. However, conventional antipsychotics present side effects and toxicity, highlighting the need for new antipsychotics. We aimed to evaluate the cytotoxicity of haloperidol (HAL), clozapine (CLO), and a new molecule with antipsychotic potential, PT-31, in NIH-3T3 cells. The neutral red uptake assay and the MTT assay were performed to evaluate cell viability and mitochondrial activity, morphological changes were assessed, and intracellular reactive oxygen species (ROS) detection was performed. HAL and CLO (0.1 μM) showed a decrease in cell viability in the neutral red uptake assay and in the MTT assay. In addition, cell detachment, content decrease, rounding and cell death were also observed at 0.1 μM for both antipsychotics. An increase in ROS was observed for HAL (0.001, 0.01 and 1 μM) and CLO (0.01 and 1 μM). PT-31 did not alter cell viability in any of the assays, although it increased ROS at 0.01 and 1 μM. HAL and CLO present cytotoxicity at 0.1 μM, possibly through apoptosis and necrosis. In contrast, PT-31 does not present cytotoxicity to NIH-3T3 cells. Further studies must be performed for a better understanding of these mechanisms and the potential risk of conventional antipsychotics.

https://doi.org/10.1590/s2175-97902023e21738

The relationship of major depressive disorder with Crohn’s disease activity
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Facanali, Carolina Bortolozzo Graciolli

; Sobrado Junior, Carlos Walter

; Fraguas Junior, Renério

; Facanali Junior, Marcio Roberto

; Boarini, Lucas Rodrigues

; Sobrado, Lucas Faraco

; Cecconello, Ivan

Clinics

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2023, Volume 78 elocation 100188

Resumo: En | Texto: En | PDF: En

Abstract Introduction: Crohn’s disease (CD) has been related to an increased prevalence of psychiatric disorders and suicide risk (SR). However, the nature of their relationship still deserves clarification. The aim of this study is to assess the prevalence of major depressive disorder (MDD) in patients with CD, and to investigate the relationship between MDD and CD outcomes. Methods: A cross-sectional study involving CD patients was performed. CD activity was evaluated by the Harvey-Bradshaw index and CD phenotype by the Montreal classification. The presence of MDD was assessed by the Patient Health Questionnaire score-9 (PHQ-9). Sociodemographic data and other characteristics were retrieved from electronic medical records. Results: 283 patients with CD were included. The prevalence of MDD was 41.7%. Females had a risk of MDD 5.3 times greater than males. CD disease duration was inversely correlated with MDD severity. Individuals with active CD were more likely to have MDD (OR = 796.0; 95% CI 133.7‒4738.8) than individuals with CD remission. MDD was more prevalent in inflammatory behavior (45.5%) and there were no statistical differences regarding the disease location. 19.8% of the sample scored positive for SR. Conclusion: The present results support data showing an increased prevalence of MDD in individuals with CD. Additionally, it indicates that MDD in CD might be related to the activity of CD. Prospective studies are warranted to confirm these results and to address whether MDD leads to CD activity, CD activity leads to MDD or both ways are existent.

https://doi.org/10.1016/j.clinsp.2023.100188

Perianal fistulizing Crohn's disease is associated with a higher prevalence of HPV in the anorectal fistula tract. A comparative study
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Boarini, Lucas Rodrigues

; Sobrado, Carlos Walter

; Mota, Giana Rabello

; Villa, Luisa Lina

; Albuquerque, Idblan Carvalho de

; Queiroz, Natalia Sousa Freitas

; Facanali, Carolina Bortolozzo Graciolli

; Nadal, Sidney Roberto

; Cecconello, Ivan

Clinics

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2023, Volume 78 elocation 100219

Resumo: En | Texto: En | PDF: En

Abstract Background & Aims Perianal fistulizing Crohn's disease is the main risk factor for anal cancer in patients with inflammatory bowel disease. Whether this occurs due to a higher frequency of human papillomavirus remains unclear. The authors aimed to evaluate the prevalence of HPV and high-risk HPV in patients with perianal Crohn's disease, compared with a control group. Methods The authors conducted a two-center cross-sectional study in which perianal fistulizing Crohn's disease patients were matched for age and sex with patients with anorectal fistula without Crohn's disease. Biopsy specimens were obtained from fistulous tracts during examination under anesthesia for both groups. The samples were sent for HPV detection and genotyping using the INNO-LiPA test. Results A total of 108 subjects (54 in each group) were recruited. The perianal fistulizing Crohn's disease group showed a statistically higher frequency of HPV in the fistulous tract than the control group (33.3% vs. 16.7%; p = 0.046). Separate analyses on high-risk types demonstrated that there was a numerically higher frequency of HPV in the perianal fistulizing Crohn's disease group. In multiple logistic regression, patients with perianal fistulizing Crohn's disease were found to have a chance of HPV 3.29 times higher than patients without Crohn's disease (OR = 3.29; 95% CI 1.20‒9.01), regardless of other variables. The types most frequently identified in the perianal fistulizing Crohn's disease group were HPV 11 (12.96%) and HPV 16 (9.26%). Conclusion Perianal fistulizing Crohn's disease is associated with a higher prevalence of HPV than in patients with anorectal fistula without Crohn's disease.

https://doi.org/10.1016/j.clinsp.2023.100219

Reliability of Operational Global Forecast System and a Local Implementation of WAVEWATCH III during an Explosive Cyclone in South America in June 2020
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Costa, Marcia Carolina de Oliveira

; Kampel, Milton

; Paiva, Vitor Galazzo de

; Batista, Rogério

; Soares, Ivan

; Barreto, Fernando Túlio Camilo

; Rodrigues, Douglas Fraga

; Silva Junior, Carlos Leandro da

Revista Brasileira de Meteorologia

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2023, Volume 38 elocation e38230002

Resumo: En Pt | Texto: En Pt | PDF: En | PDF: Pt

Abstract A cyclone occurred off the southern Brazilian coast between 30/06/2020 and 01/07/2020, moving eastwards from land towards offshore. The system was registered in numerical models and in-situ observations (buoy and ship) from the day it started until dissipated. The goal of this work is to use the data collected during this extreme environmental condition in a statistical comparison with the atmospheric operational model Global Forecast System (GFS) and a local implementation of the WAVEWATCH III (WW3) wave model, which used the GFS as one of the inputs, to understand the limitations of these models. Initially, the results showed that the system near the southern Brazilian coast was a strong explosive cyclone according to the Sanders and Gyakum (1980) classification. We found that the GFS and WW3 models exhibited greater errors when compared with the buoy data during the 48 h period of explosive weather conditions, while for the GFS model, the greatest errors around the ship occurred after that period. The WW3 errors may be explained by the difference between the buoy and WW3 gridpoint depth and the GFS errors at this location.

Resumo Ocorreu um ciclone na costa sul do Brasil entre 30/06/2020 e 01/07/2020, movendo-se do continente em direção ao mar. O sistema foi registrado em modelos numéricos e observações in-situ (boia e navio) desde o dia em que se formou até se dissipar. O objetivo deste trabalho é utilizar os dados coletados durante essa condição ambiental extrema em uma comparação estatística com o modelo atmosférico operacional Global Forecast System (GFS) e uma implementação local do modelo de ondas WAVEWATCH III (WW3), que utiliza o GFS como um dos inputs, para entender as limitações desses modelos. Inicialmente, os resultados mostraram que o sistema próximo à costa sul do Brasil era um ciclone explosivo forte de acordo com a classificação de Sanders e Gyakum (1980). Descobrimos que os modelos GFS e WW3 apresentaram maiores erros em comparação com os dados da boia durante o período de 48 horas de condições meteorológicas explosivas, enquanto para o modelo GFS, os maiores erros ao redor do navio ocorreram após esse período. Os erros do WW3 podem ser explicados pela diferença entre a profundidade da boia e o ponto da grade do WW3, e os erros do GFS nessa localização.

https://doi.org/10.1590/0102-77863810002

Acclimatization of Sweet Potatoes Under in vitro Application of Diatomaceous Earth
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

OLIVEIRA, ALTINO JÚNIOR M.

; RANGEL JUNIOR, IVAN MARCOS

; RODRIGUES, FILIPE A.

; MARTINS, ADALVAN DANIEL

; CAVALCANTI, VYTÓRIA P.I.

; DÓRIA, JOYCE

; PASQUAL, MOACIR

Anais da Academia Brasileira de Ciências

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2023, Volume 95 Nº 2 elocation e20200021

Resumo: En | Texto: En | PDF: En

Abstract Diatomaceous earth is an organic naturally occurring material rich in silicon. This silicon source can be used in organic agriculture, it also has a great potential of use in the acclimatization of crops. However, there are no reports of the effects of diatomaceous earth supplementation on the micropropagation of sweet potato. Thus, the objective of this study was to evaluate the effects of different concentrations of diatomaceous earth applied in vitro on the growth, physiology and anatomy of sweet potato cv. ‘Brazlândia Branca’ after acclimatization. Four concentrations of diatomaceous earth. After 30 days of in vitro growth, the plants were transferred to a greenhouse for acclimatization. After 45 days, leaf number, shoot and root length, fresh and dry shoot and root mass, gas exchange, chlorophyll content, root and leaf anatomy. The experimental design was completely randomized. The supplementation of diatomaceous earth in the in vitro cultivation had beneficial effects, increasing the accumulation of mass, improving the photosynthetic apparatus and promoting favorable anatomical characteristics during the acclimatization of the sweet potato plants. In addition, the use of diatomaceous earth achieved adequate seedling development, with higher seedling quality and resistance to biotic and abiotic effects than attained with control treatment.

https://doi.org/10.1590/0001-3765202320200021

Population structure of the seahorse Hippocampus reidi (Syngnathiformes: Syngnathidae) in a Brazilian semi-arid estuary
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Valentim, Gabriela Alves

; Pinto, Leonardo Mesquita

; Gurgel-Lourenço, Ronaldo César

; Rodrigues-Filho, Carlos Alberto de Sousa

; Sánchez-Botero, Jorge Iván

Neotropical Ichthyology

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2023, Volume 21 Nº 4 elocation e230004

Resumo: En Pt | Texto: En Pt | PDF: En | PDF: Pt

Abstract The longsnout seahorse (Hippocampus reidi) is a vulnerable species found along most of the Brazilian coastline, such as semi-arid estuaries with strong rainfall seasonality, hypersalinity, and low depth. To evaluate the population structure of H. reidi over time, we monitored the seahorse population in the Pacoti estuary (Brazil) for one year, based on 248 registered specimens. Salinity, water transparency, sex, pregnancy, body height, and holdfast use were registered. Mixed linear models revealed that sampling month, salinity, and transparency had no influence on population density in the lower zone of the estuary. Pregnant individuals were more frequent in the dry season and at higher salinities. Mean body height (12.7 cm) increased in the dry season. Bright colors were predominant. The seahorses employed nine types of holdfasts, most often mangrove roots, and were found to reproduce throughout the year, peaking in the dry season. Salinity and transparency did not impact population density. In Brazilian semi-arid estuaries, the longsnout seahorse is strongly associated with mangrove vegetation, used as holdfast. Therefore, the conservation of seahorse populations depends on the conservation of the local mangrove forests.

Resumo O cavalo-marinho Hippocampus reidi é uma espécie vulnerável encontrada ao longo da maior parte da costa brasileira, incluindo estuários semiáridos com forte sazonalidade de chuvas, hipersalinidade e baixa profundidade. Para avaliar a estrutura populacional do H. reidi ao longo do tempo, monitoramos a população de cavalos-marinhos no estuário do Pacoti (Brasil) por um ano, com base em 248 espécimes registrados. Registramos a salinidade, a transparência da água, o sexo, a gravidez, a altura do corpo e o uso de substratos de fixação. Modelos lineares mistos revelaram que o mês de coleta, a salinidade e a transparência não tiveram influência na densidade populacional na zona inferior do estuário. Indivíduos grávidos eram mais frequentes na estação seca e em salinidades mais altas. A altura média do corpo (12,7 cm) aumentou na estação seca. Cores vibrantes foram predominantes. Os cavalos-marinhos utilizaram nove tipos de substratos de fixação, com maior frequência em raízes de mangue, e foram encontrados se reproduzindo ao longo do ano, com pico na estação seca. Em estuários semiáridos brasileiros, o cavalo-marinho H. reidi está fortemente associado à vegetação de mangue, utilizada como substrato de fixação. Portanto, a conservação das populações de cavalos-marinhos depende da preservação dos manguezais.

https://doi.org/10.1590/1982-0224-2023-0004

10.

Physiological and biochemical changes in desiccation and rehydration cycles of Selaginella convoluta (Selaginellaceae)
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Aidar, Saulo de Tarso

; Chaves, Agnaldo Rodrigues de Melo

; Fernandes-Júnior, Paulo Ivan

; Morgante, Carolina Vianna

Rodriguésia

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2023, Volume 74 elocation e00672023

Resumo: En Pt | Texto: En Pt | PDF: En | PDF: Pt

Abstract Vegetative desiccation tolerance (VDT) is a biological process that allows resurrection plants to complete desiccation-rehydration cycles and survive without permanent damage. Physiological and biochemical changes related to the VDT were evaluated in the lycophyte Selaginella convoluta from the Caatinga biome, a seasonally dry tropical forest of northeastern Brazil. As representative of the oldest division of extant vascular plants, the investigation of VDT mechanisms in this species serves as an opportunity to provide information for research communities interested in functional traits related to water-limited conditions. The experiments were performed with plants in their natural habitat, in dry and rainy seasons, and in pots under shade house conditions. Relative water content, chlorophyll a fluorescence, gas exchange, activity of antioxidant enzymes, concentration of chlorophylls, proteins, total amino acids, proline, and soluble carbohydrates in leaf tissues were evaluated throughout the process of complete dehydration and subsequent re-watering of intact plants. The overall results reveal the capacity of S. convoluta to tolerate extreme dehydration and rapidly recover upon rehydration. This species minimizes potential damages during the desiccation-rehydration cycle due to the presence of inductive mechanisms (photochemical preventing, sucrose accumulation) and constitutive mechanisms (antioxidant activity of catalase and ascorbate peroxidase), which share similarities with the VDT of both angiosperms and bryophytes.

Resumo Tolerancia à dessecação vegetativa (TDV) é um processo biológico que permite que plantas revivescentes sobrevivam a ciclos completos de dessecação-reidratação sem danos permanentes. Alterações fisiológicas e bioquímicas relacionadas à TDV foram avaliadas na licófita Selaginella convoluta do bioma Caatinga, em uma floresta tropical sazonalmente seca do nordeste do Brasil. Como representante da mais antiga divisão de plantas vasculares não extintas, a investigação de mecanismos de TDV nesta espécie serve como uma oportunidade para fornecer informações para comunidades de pesquisa interessadas em características funcionais relacionadas às condições limitantes de água. Os experimentos foram conduzidos com plantas em seu habitat natural, nas estações seca e chuvosa, e em potes sob casa de vegetação sombreada. Conteúdo relativo de água, fluorescência da clorofila a, trocas gasosas, atividade de enzimas antioxidantes, concentração de clorofilas, proteínas, aminoácidos totais, prolina e carboidratos solúveis de tecidos foliares foram avaliados ao longo dos processos de completa dessecação e subsequente reidratação de plantas intactas. Os resultados revelam a capacidade de S. convoluta para tolerar desidratação extrema e rapidamente recuperar após a reidratação. Esta espécie minimiza danos potenciais durante o ciclo de dessecação-reidratação devido à presença de mecanismos protetivos dos tipos indutivos (inibição fotoquímica, acúmulo de sacarose) e constitutivos (atividade antioxidante de catalase e ascorbato peroxidase), mostrando similaridades com a TDV de angiospermas e briófitas.

https://doi.org/10.1590/2175-7860202374088

11.

¿La Covid-19 ha infectado las noticias? Cómo los periodistas, las audiencias y los procesos de producción son alterados por las pandemias
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

de Sousa, Vítor

; Capoano, Edson

; Rodrigues Costa, Pedro

; Paganotti, Ivan

Universitas-XXI, Revista de Ciencias Sociales y Humanas

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Dez 2022, Nº 37 Páginas 19 - 41

Resumo: Es En | Texto: Es En | PDF: Es | PDF: En

Resumen Este artículo se enfoca en las actividades periodísticas en el contexto de la primera ola de Covid-19, en 2020, cuando se identificó una alta presencia de la posverdad y las fake news en la producción de noticias, lo que se justifica al abordar estos dos objetos conceptuales. El objetivo fue comprender cómo los problemas en el proceso productivo, como la precariedad laboral durante la pandemia, permitieron vacíos de información, que fueron llenados por la desinformación y la infodemia. Para ello se utilizó un método cuantitativo, con la aplicación de una encuesta en línea a 365 participantes de Iberoamérica durante el 2020, sobre procesos de producción, rutinas de trabajo e información generada durante la cuarentena de los periodistas, y el consumo de información durante el confinamiento de periodistas y receptores de noticias en línea. Como resultado, la mayoría de los periodistas cambió su rutina de trabajo, como la verificación de datos digitales y la preferencia por fuentes científicas. Cerca de la mitad de los receptores de noticias valoran positivamente el trabajo de prensa, a pesar de que el consumo de noticias ha generado perspectivas negativas. Como conclusiones, es necesario revisar ciertas prácticas productivas en el ámbito periodístico, durante situaciones excepcionales como la pandemia.

Abstract This article focuses on journalistic activities in the context of the first wave of Covid-19, in 2020, when a high presence of post-truth and fake news was identified in news production, which is justified in addressing these two conceptual objects. The objective was to understand how problems in the production process, such as job insecurity during the pandemic, allowed information gaps, which were filled by misinformation and infodemics. For this, a quantitative method was used, with the application of an online survey to 365 participants from Ibero-America during 2020, on production processes, work routines, and information generated during the quarantine of journalists, and consumption of information during confinement to journalists and online news receivers. As a result, most journalists have changed their work routine, such as digital data checking and preference for scientific sources. About half of news receivers valued press work positively, even though news consumption has generated negative prospects. As conclusions, there is a need to review certain productive practices in the journalistic field, during exceptional situations such as the pandemic.

https://doi.org/10.17163/uni.n37.2022.01 90 downloads

12.

Posicionamento sobre a Saúde Cardiovascular nas Mulheres – 2022
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Oliveira, Glaucia Maria Moraes de

; Almeida, Maria Cristina Costa de

; Marques-Santos, Celi

; Costa, Maria Elizabeth Navegantes Caetano

; Carvalho, Regina Coeli Marques de

; Freire, Cláudia Maria Vilas

; Magalhães, Lucelia Batista Neves Cunha

; Hajjar, Ludhmila Abrahão

; Rivera, Maria Alayde Mendonça

; Castro, Marildes Luiza de

; Avila, Walkiria Samuel

; Lucena, Alexandre Jorge Gomes de

; Brandão, Andréa Araujo

; Macedo, Ariane Vieira Scarlatelli

; Lantieri, Carla Janice Baister

; Polanczyk, Carisi Anne

; Albuquerque, Carlos Japhet da Matta

; Born, Daniel

; Falcheto, Eduardo Belisário

; Bragança, Érika Olivier Vilela

; Braga, Fabiana Goulart Marcondes

; Colombo, Fernanda M. Consolim

; Jatene, Ieda Biscegli

; Costa, Isabela Bispo Santos da Silva

; Rivera, Ivan Romero

; Scholz, Jaqueline Ribeiro

; Melo Filho, José Xavier de

; Santos, Magaly Arrais dos

; Izar, Maria Cristina de Oliveira

; Azevedo, Maria Fátima

; Moura, Maria Sanali

; Campos, Milena dos Santos Barros

; Souza, Olga Ferreira de

; Medeiros, Orlando Otávio de

; Silva, Sheyla Cristina Tonheiro Ferro da

; Rizk, Stéphanie Itala

; Rodrigues, Thais de Carvalho Vieira

; Salim, Thaís Rocha

; Lemke, Viviana de Mello Guzzo

Arquivos Brasileiros de Cardiologia

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Nov 2022, Volume 119 Nº 5 Páginas 815 - 882

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

https://doi.org/10.36660/abc.20220734

13.

Acoustic analysis of vocalization and the behavioral response associated to sound production of the nine banded armadillo Dasypus novemcinctus (Mammalia, Cingulata, Dasypodidae) in an agonistic context
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Costa, Fabiana Rodrigues

; Moura, Pedro Henrique Areco Gomes

; Alves-Júnior, Sérgio da Rocha

; Rosa, Patricia Sammarco

; Nunes, Ivan

Papéis Avulsos de Zoologia

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2022, Volume 62 elocation e202262018

Resumo: En | Texto: En | PDF: En

Abstract Although communication capabilities are displayed by many vertebrate groups, some repertoires are poorly known, such as the case of xenarthrans, particularly armadillos, for which vocalization as a source of communicating to others remains poorly understood and relies on punctual reports of sounds. Here we provide the first description of a behavioral response associated with sound emission of two subjects of Dasypus novemcinctus. Both audio and visual registration was performed to subsequent analyses of expressed behaviors and emitted calls, which accounted for 76 vocalizations from a total of eight video recordings randomly collected from 2017 to 2019. Sound is acoustically characterized by both inhale and exhale phases composed of two vocal units, and no harmonic structure was observed. Once the subjects have always produced these vocalizations while cornered and exhibiting defensive behavior against another subject/human disturbance, these vocalizations were termed as distress. Subjects produced a hiss-purr-like sound while trying to avoid contact with another by bowing or lowering their bodies, humping, or even moving elsewhere when sound production ceased. This shows that the sound repertoire of armadillos is still to be unveiled and seems to be much more complex than previously thought.

https://doi.org/10.11606/1807-0205/2022.62.018

14.

Ediacaran-Cambrian microbialites of the Southern Amazon Craton: relation with the metazoan rise, sea-level changes, and global tectonics
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Nogueira, Afonso César Rodrigues

; Santos, Renan Fernandes dos

; Romero, Guilherme Raffaeli

; Bandeira, José

; Riccomini, Claudio

; Barrera, Ivan Alfredo Romero

; Silva, Pedro Augusto Santos da

; Soares, Joelson Lima

; Fairchild, Thomas

; Nogueira, Anna Andressa Evangelista

; Góes, Ana Maria

; Oliveira, Rick Souza de

; Medeiros, Renato Sol Paiva de

; Andrade, Luiz Saturnino de

; Brito, Ailton da Silva

; Oliveira, Pedro Guilherme Assunção

; Sodré, Argel de Assis Nunes

; Carvalho, Davi Ferreira de

; Truckenbrodt, Werner

Brazilian Journal of Geology

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2022, Volume 52 Nº 2 elocation e20210065

Resumo: En | Texto: En | PDF: En

Abstract Microbialites are the most abundant life evidence in Precambrian sedimentary rocks. They are produced by microbial interaction activity and sedimentary processes reflecting paleoenvironmental conditions. The Ediacaran-Cambrian carbonate and siliciclastic successions in the Southern Amazon Craton in Central Brazil, provide a key opportunity to understand how the metazoan life coexisted with the microbial communities. The spatial and temporal distribution of microbialites as well as morphological and paleoenvironmental changes have been assessed, reinterpreting previous works and including new data from the Araras-Alto Paraguai and Corumbá basins. The deposition was controlled by subsidence and sea-level changes that affected these basins, considered extensions of epicontinental seas during the Gondwana assembly. The stromatolites are restricted to coastal deposits and experienced thriving flourishment intervals after the Marinoan Glaciation (635 Ma). Post-glacial transgression was marked by microbial colonization in shallow platforms represented by stratiform and giant domical stromatolites in the Araras-Alto Paraguai Basin. The continuity of the transgression generated a moderately deep aragonite sea at about 622 Ma. A progressive sea-level fall caused the implantation of coastal environments under greenhouse conditions with tidal flat and sabkha settings colonized by centimetric-scale stromatolites. The sea retreat was accompanied by progressive uplift, causing a moderate inversion of the basin and erosion of the succession until ~560 Ma with the deposition of the last preserved tidal flat deposits with the occurrence of thrombolites. The subsiding Corumbá Basin was the site of microbially-induced deposition of carbonates in a shallow platform connected to an offshore setting with the proliferation of metazoan straddling the Ediacaran-Cambrian boundary. Microbial communities were restricted to lagoon deposits during the Lower Cambrian transgression in the Araras-Alto Paraguai Basin and the last phase refers to the sea retreat towards southeast, developing a fluvial system connected with the arid and evaporitic tidal flats colonized by microbialites that lasted until the upper Cambrian. Except for the post-glacial stromatolites, the columnar and domal microbialite indicate that the coastal settings dominated the Ediacaran-Cambrian transition. The preservation of microbialites in the post-glacial intervals can be associated with the Mg-Ca-CO3 oversaturation in dolomitic platforms. The rapid calcification and ability to resist the dissolution and replacement have increased the stromatolites’ preservation potential reported here, where its well-preserved occurrence in tidal flats and sabkha occurs due to intense early diagenetic silicification. The change from carbonate accumulation to siliciclastic-rich environments contributed to the demise of microbially-induced strata. In general, the scarce coexistence between coastal stromatolite and metazoan-bearing marine deposits makes it challenging to establish a competitive relationship between these organisms, as previously postulated.

https://doi.org/10.1590/2317-4889202220210065

15.

O ESPORTE PARA O DESENVOLVIMENTO E A PAZ NAS REVISTAS ACADÊMICAS BRASILEIRAS: UMA REVISÃO DE LITERATURA INTEGRATIVA
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Freitas, Gustavo da Silva

; Miguel, Iván Gregorio Silva

; Fernandes, Daiana Viacelli

; Reis, Mauricio Cravo dos

; Dias, Thais Mortola

; Borges, Deise Saraiva

; Rodrigues, Leonardo de Souza

; Teixeira, Juliana Cotting

; Graeff, Billy

Movimento

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2022, Volume 28 elocation e28045

Resumo: Pt En Es | Texto: Pt En Es | PDF: Pt | PDF: En | PDF: Es

Resumo Neste artigo, realizamos uma revisão de literatura integrativa através de quatro bases de dados científicas de ampla utilização no meio acadêmico brasileiro, a partir dos descritores: “Esporte e Desenvolvimento Social”, “Projeto Social Esportivo” e “Projetos Sociais Esportivos”. Encontramos 341 artigos, os quais foram, posteriormente e de acordo com critérios de inclusão/exclusão, reduzidos a 57 trabalhos analisados. Apresentamos aqui resultados referentes às categorias “Campo de atuação”, “Ano de publicação”, “Revistas” e “Resultados da pesquisa”. A metodologia seguiu os passos sugeridos por Whittemore e Knafl (2005): (a) identificação do problema, (b) pesquisa da literatura, (c) avaliação dos dados, (d) análise dos dados e (e) apresentação. Os resultados de nossa pesquisa lidam com variações que consideramos significativas no contexto das categorias eleitas e sugerem interpretações para tais variações. Além disso, por fim, refletimos acerca dos limites de nossa pesquisa e das implicações deste trabalho para investigações futuras.

Abstract In this article, we carry out an integrative literature review in four databases widely used in the Brazilian academic environment, using the descriptors: “Sport and Social Development”, “Sport Social Project” and “Sports Social Projects”. We found 341 articles, which were, later and according to inclusion/exclusion criteria, reduced to 60 works to be analyzed. Here we present results referring to the categories “Field of action”, “Year of publication”, “Journals” and “Research results”. The methodology followed the steps suggested by Whittemore and Knafl (2005): (a) problem identification, (b) literature search, (c) data evaluation, (d) data analysis and (e) presentation. The results of our research deal with variations that we considered significant in the context of the categories chosen and suggest interpretations for such variations. In addition, finally, we reflect on the limits of our research and the implications of this work for future research.

Resumen En este artículo, realizamos una revisión de literatura integrativa en cuatro bases de datos ampliamente utilizadas en el medio académico brasileño, a partir de los siguientes descriptores: “Deporte y Desarrollo Social”, “Proyecto Social Deportivo” y “Proyectos Sociales Deportivos”. Encontramos 341 artículos, los cuales fueron, posteriormente y de acuerdo con criterios de inclusión/exclusión, reducidos a 57 trabajos analizados. Presentamos aquí resultados referentes a las categorías “Campo de actuación”, “Año de publicación”, “Revistas” y “Resultados de la investigación”. La metodología siguió los pasos sugeridos por Whittemore y Knafl (2005): (a) identificación del problema, (b) investigación de la literatura, (c) evaluación de los datos, (d) análisis de los datos y (e) presentación. Los resultados de nuestra investigación trabajan con variaciones que consideramos significativas en el contexto de las categorías elegidas y sugieren interpretaciones para tales variaciones. Además, reflexionamos acerca de los límites de nuestra investigación y de las implicaciones de este trabajo para las futuras investigaciones.

https://doi.org/10.22456/1982-8918.121670

Exibindo

itens por página

Página de 11 Próxima

Selecione um ou mais resultados

Todos Ordem alfabética

Resultados

Gráfico comparativo Download CSV

Visualizar estatísticas de

Enviar resultado

E-mail do(s) destinatários*

Utilize ; (ponto e vírgula) para mais de um e-mail.

Enviar por e-mail

Esta página

Registros selecionados

Todos os registros (max. 300)

Alterar remetente, assunto e comentários

Seu email

Assunto

Comentários

Alterar remetente, assunto e comentários

Exportar resultados

Formato de exportação:

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

BibTeX

Citação

CSV (para Excel, etc)

Exportar:

Esta página

Itens selecionados

Todos os registros (max. 2000)

Mostrar mais

Sem resultados

Não foram encontrados documentos para sua pesquisa

Glossário e ajuda para busca

Você pode enriquecer sua busca de uma forma muito simples. Use os índices de pesquisa combinados com os conectores (AND ou OR) e especifique cada vez mais sua busca.

Por exemplo, se você deseja buscar artigos sobre
casos de dengue no Brasil em 2015, use:
ti:dengue and publication_year:2015 and aff_country:Brasil

Veja abaixo a lista completa de índices de pesquisa que podem ser usados:

Cód. do Índice	Elemento
ti	título do artigo
au	autor
kw	palavras-chave do artigo
subject	assunto (palavras do título, resumo e palavras-chave)
ab	resumo
ta	título abreviado da revista (ex. Cad. Saúde Pública)
journal_title	título completo da revista (ex. Cadernos de Saúde Pública)
la	código do idioma da publicação (ex. pt - Português, es - Espanhol)
type	tipo do documento
pid	identificador da publicação
publication_year	ano de publicação do artigo
sponsor	financiador
aff_country	código do país de afiliação do autor
aff_institution	instituição de afiliação do autor
volume	volume do artigo
issue	número do artigo
elocation	elocation
doi	número DOI
issn	ISSN da revista
in	código da coleção SciELO (ex. scl - Brasil, col - Colômbia)
use_license	código da licença de uso do artigo

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 o conteúdo de www.scielo.org, exceto onde está identificado, está licenciado sob uma Licença Creative Commons.
saiba mais »