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Bacteriological quality and antimicrobial resistance of Staphylococcus spp. and Escherichia coli isolated from organic and conventional fresh cheese
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SALEH, Mariana Marques

; CARVALHO, Alice Marqui de

; ANDRADE, Nayara Martins de

; FONSECA, Ana Beatriz Monteiro

; KELLER, Luiz Antonio Moura

; DUARTE, Maria Carmela Kasnowski Holanda

; FRANCO, Robson Maia

Food Science and Technology

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2023, Volume 43 elocation e54922

Abstract: En | Text: En | PDF: En

Abstract One of the appeals of the rising organic market is the guarantee of offering healthier foods with less impact on the environment, from a more sustainable production method. Dairy market is one of the most popular in the sector but studies on organic dairy products safety are still scarce. The objective of this study was to evaluate the microbiological quality of organic and conventional Minas Frescal cheese samples, and the antimicrobial sensitivity of isolated strains of Escherichia coli and coagulase-positive Staphylococcus to different antimicrobials. Listeria spp. and Salmonella spp. was not detected in any of the samples analyzed. Regarding coagulase-positive Staphylococcus, 70% showed higher counts than that is established by Brazilian legislation, but with no significant difference between the systems. In the determination of the Most Probable Number of E. coli was observed significant difference between the systems, with a higher contamination index in cheeses derived from the organic system. All strains isolated showed 100% resistance to β-lactams and both in the conventional and organic systems were observed multiple resistance characteristics. Considering the similarity of the results obtained, it is necessary to analyze other parameters such as production system, herd health and good manufacturing practices to compare deeply both systems.

https://doi.org/10.1590/fst.54922

A reabilitação da incapacidade para o trabalho na percepção de homens e mulheres trabalhadores: uma metassíntese qualitativa trabalhadores
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Barbalho, Bianca Araújo

; Silva, Merlayne Pâmela de Oliveira e

; Moura, Ana Lúcia Gadelha de

; Cárdia, Maria Cláudia Gatto

; Ribeiro, Kátia Suely Queiroz Silva

; Neves, Robson da Fonseca

Cadernos Saúde Coletiva

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2023, Volume 31 N. 4 elocation e31040592

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo Introdução: A incapacidade para o trabalho e o processo de reabilitação são eventos importantes na vida de homens e mulheres trabalhadores que sofrem algum tipo de interrupção da vida laborativa por causa de agravos relacionados ao trabalho. Assim, conhecer como ambos enfrentam essas situações pode trazer luz para as abordagens de reabilitação. Objetivo: Sistematizar e sintetizar o que a literatura científica aponta a respeito da reabilitação da incapacidade para o trabalho na percepção de homens e mulheres. Método: Buscou-se estudos qualitativos publicados nas bases de dados CINAHL, SCOPUS, PsycINFO e Web of Science, utilizando-se os descritores: qualitative method, work disability, rehabilitation e gender. A análise foi feita com base nos pressupostos de Noblit e Hare para metassíntese. Resultados: Os homens valorizam a atuação dos serviços de saúde ocupacional e a incorporação das exigências do trabalho na reabilitação. As mulheres apontaram as atitudes dos profissionais, família e colegas e valorizaram a mudança de local ou tarefa de trabalho e o acreditar na potencialidade delas no processo de reabilitação. Conclusões: A presente metassíntese apontou para o valor que homens e mulheres atribuem respectivamente, mas não exclusivamente, à centralidade do trabalho e às redes de apoio social no processo de reabilitação. Introdução Assim Objetivo Método Buscouse Buscou se CINAHL SCOPUS Science utilizandose utilizando descritores method disability gender Resultados profissionais Conclusões respectivamente exclusivamente

Abstract Background: Disability to work and the rehabilitation process are important events in the lives of working men and women who suffer some form of interruption in their working life due to work-related illnesses. Thus, knowing how they both cope with these situations can shed light on rehabilitation approaches. Objective: Systematize and synthesize what the scientific literature points out about the rehabilitation of incapacity for work in the perception of men and women. Method: Qualitative studies published in the CINAHL, SCOPUS, PsycINFO, and Web of Science databases were searched, using the descriptors: qualitative method, work disability, rehabilitation, and gender. The analysis was based on the assumptions of Noblit and Hare for meta-synthesis. Results: Men value the performance of occupational health services and the incorporation of work demands in rehabilitation. Women pointed out the attitudes of professionals, family and colleagues and valued the change of place or work task and the belief in their potential in the rehabilitation process. Conclusions: The present meta-synthesis pointed to the value that men and women attribute respectively, but not exclusively, to the centrality of work and social support networks in the rehabilitation process. Background workrelated related illnesses Thus approaches Objective Method CINAHL SCOPUS PsycINFO searched descriptors method disability gender metasynthesis. metasynthesis meta synthesis. synthesis Results professionals Conclusions respectively exclusively

https://doi.org/10.1590/1414-462x202331040592

Influence of Lycium barbarum Extract Intake on Oxidative Stress in Wistar Rats
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Janke, Fernanda

; Trindade, Fernanda Moura Ribeiro

; Penteado, Júlia Oliveira

; Nogueira, Camila Castencio

; Uecker, Júlia Neitzel

; Schneider, Janaína Pereira

; Nickel Ávila, Caroline

; Rincón, Joao Alveiro Alvarado

; Barros, Carlos Castilho de

; Jaskulski, Itiane Barcellos

; Andreazza, Robson

; Oliveira, Jordan Teixeira

; Pieniz, Simone

Brazilian Archives of Biology and Technology

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2022, Volume 65 elocation e22210114

Abstract: En | Text: En | PDF: En

Abstract: This study aimed to analyze the effects of Goji Berry extract (GB, Lycium barbarum) gavage administration on liver tissue oxidative stress in Wistar rats as well as to identify and quantify the content of the major bioactive compounds of the fruit. Four diets were applied: SW - standard diet + water; SG - standard diet + Goji Berry extract (125 mg/kg of animal); PW - palatable diet + water; PG - palatable diet + Goji Berry extract (125 mg/kg of animal). Results showed a significant increase in catalase enzyme activity in the liver of rats treated with GB and also in those intaking the palatable diet without GB when compared to the SW group. An increased mRNA expression of this enzyme in the same tissue and groups was also verified. Regarding lipid peroxidation, the GB extract produced a significant decrease in the oxidation state in the SG and PG groups. The results also showed a significant amount of bioactive compounds in GB extract.

https://doi.org/10.1590/1678-4324-2022210114

Carbon and Nitrogen Stocks and Microbiological Activity Under Forest-Pasture System and Traditional Pasture in Pernambuco
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Pessôa, Gabriel Carlos Moura

; Piscoya, Victor Casimiro

; Rolim Neto, Fernando Cartaxo

; Araújo Filho, Renisson Neponuceno de

; Melo, Robson Carlos Pereira de

; Pessôa, Uriel Calisto Moura

; Silva, Lucas José de Souza

; Cunha Filho, Moacyr

; Almeida, Rafael Costa Schaidhauer de

; Piscoya, Thaisa Oliveira Folha

; Moraes, Alex Souza

; Gomes Filho, Raimundo Rodrigues

; Medeiros, Raimundo Mainar de

; Saboya, Luciano Marcelo Fallé

; Pedrotti, Alceu

; Holanda, Francisco Sandro Rodrigues

; Fernandes, Milton Marques

; Santos, Luiz Diego Vidal

Floresta e Ambiente

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2022, Volume 29 N. 2 elocation e20210068

Abstract: En | Text: En | PDF: En

Abstract An adequate amount of soil organic matter is considered essential for long-term sustainable agriculture, ensuring good productivity. Therefore, the present study quantified carbon and nitrogen stocks and microbiological activity in soil of three different areas: Forest-pasture System, Pasture System and preserved Caatinga - used as a reference of the experiment - located in a semi-arid region, in Watershed of Pajeú River, state of Pernambuco, Brazil. Eight trenches were opened in each system to collect soil samples at depths of 0 - 10, 20 - 30 and 50 - 60 cm, for chemical and microbiological analysis. In general, attributes of soil showed better results of land use in the following order: preserved Caatinga - Forest-pasture System - Pasture System.

https://doi.org/10.1590/2179-8087-floram-2021-0068

Proximate composition and kinectics drying of sweet pine nuts compared to typical nuts of Araucaria angustifolia
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Gil, Bruna Valéria

; Moura, Amanda Pacheco Cardoso

; Sachet, Marcos Robson

; Ribas, Maria Fernanda

; Pertille, Rafael Henrique

; Rohr, Angela

; Pereira, Edimir Andrade

; Danner, Moeses Andrigo

Ciência Rural

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2021, Volume 51 N. 4 elocation e20200399

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO: O objetivo deste trabalho foi determinar a composição centesimal e a cinética de secagem de pinhões doces em comparação com pinhões típicos de Araucaria angustifolia. Este estudo baseia-se na composição centesimal, cor e duração da secagem dos pinhões de ambos os tipos e na influência da temperatura e da geometria de corte no processo de desidratação. Os pinhões doces apresentaram menor valor calorífico e conteúdo de carboidratos. Por outro lado, apresentaram maior teor de lipídios, fibras alimentares, proteínas e cinzas quando comparados aos pinhões típicos. A cor dos pinhões doces é rosa claro, enquanto o pinhão típico é branco amarelado. Os pinhões doces também são mais macios. A cinética de secagem das sementes se enquadra bem nos modelos logístico e de Thompson. Para acelerar as taxas de secagem, recomendamos fatiar os pinhões em seções finas e secá-los a temperaturas de 60 °C para pinhões típicos e 70 °C para pinhões doces.

ABSTRACT: The objective of this research was to determine the proximate composition and kinetics drying of sweet pine nuts compared to typical pine nuts of Araucaria angustifolia. This study is based on the proximate components, color, and duration of pine nuts drying of both types, and the influence of temperature and cutting geometry on the dehydration process. Sweet pine nuts had lower calorific value and carbohydrate content, but higher lipid, dietary fiber, protein, and ash contents when compared to typical pine nuts. Color of sweet pine nuts is light pink whereas the typical pine nut is yellowish-white. Sweet pine nuts were also softer. Drying kinetics of the seeds fit well into the logistic and Thompson models. To accelerate drying rates, we recommend slicing pine nuts into thin cross-sections and drying them at temperatures of 60 °C for typical pine nuts and 70 °C for sweet pine nuts.

https://doi.org/10.1590/0103-8478cr20200399 580 downloads

The effect of the commercial fish gelatin protein hydrolysate on rainbow trout (Oncorhynchus mykiss) fillet quality
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BARCELLOS, Carolina Cristina Colão

; BASSIL, Pamela Esteves

; DUARTE, Maria Carmela Kasnowski Holanda

; FRANCO, Robson Maia

; KELLER, Luiz Antonio Moura

; MESQUITA, Eliana de Fatima Marques de

Food Science and Technology

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dec 2020, Volume 40 N. 4 Pages 929 - 937

Abstract: En | Text: En | PDF: En

Abstract Willing to increase the shelf life of the food matrix, studies regarding new preservations methods are developed to preserve fish deterioration. The application of natural additives as preservatives is increasingly common, with a current emphasis on the growing use of protein hydrolysates, in substitution to artificial ones. These compounds have been the subject of recent studies, focusing on determining their functional properties and the best form of applying peptide chains. The present study aimed to evaluate the effects of the protein hydrolysate obtained by the enzymatic hydrolysis of commercial fish gelatin added to rainbow trout fillets (Oncorhynchus mykiss) packed under vacuum and maintained under refrigeration. The fillets were distributed into three sample groups (controls and hydrolysate addition at 1:10 and 1:1 ratios). Microbiological and physico-chemical assessments were carried out. The results were compared and correlations observed regarding fish preservation assessments. A relationship between pH, redox potential and N-TVB was verified when compared to microbial development, especially with regard to psychrotrophic aerobic heterotrophic bacteria count. It was concluded that the application of protein hydrolysate as an additive is promising and can be effective in the control of food quality and maintenance of freshness for a longer period.

https://doi.org/10.1590/fst.20119 421 downloads

AMB Guidelines: COVID-19
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Ferreira, Lincoln Lopes

; Sampaio, Diogo Leite

; Chagas, Antonio Carlos Palandri

; Guimarães, Hélio Penna

; Hajjar, Ludhmila Abrahão

; Lobo, Suzana Margareth Ajeje

; Abdo, Carmita Helena Najjar

; Bonamigo Filho, José Luiz

; Bacha, Helio Arthur

; Moura, Robson Freitas de

; Bernardo, Wanderley Margues

Revista da Associação Médica Brasileira

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sep 2020, Volume 66 N. 9 Pages 1179 - 1179

Abstract: En | Text: En | PDF: En

https://doi.org/10.1590/1806-9282.66.9.1179 509 downloads

Insect (Hexapoda) diversity in the oceanic archipelago of Fernando de Noronha, Brazil: updated taxonomic checklist and new records
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Rafael, José Albertino

; Limeira-de-Oliveira, Francisco

; Hutchings, Roger William

; Miranda, Gil Felipe Gonçalves

; Silva Neto, Alberto Moreira da

; Somavilla, Alexandre

; Camargo, Alexssandro

; Asenjo, Angélico

; Pinto, Ângelo Parise

; Bello, Ayr de Moura

; Dalmorra, Camila

; Mello-Patiu, Cátia Antunes de

; Carvalho, Claudio José Barros de

; Takiya, Daniela Maeda

; Parizotto, Daniele Regina

; Marques, Dayse Willkenia Almeida

; Cavalheiro, Denis de Oliveira

; Mendes, Diego Matheus de Mello

; Zeppelini, Douglas

; Carneiro, Eduardo

; Lima, Élison Fabrício Bezerra

; Lima, Estevam Cipriano Araújo de

; Godoi, Fabio Siqueira Pitaluga de

; Pessoa, Felipe Arley Costa

; Vaz-de-Mello, Fernando Zagury

; Sosa-Duque, Francisco José

; Flores, Heloísa Fernandes

; Fernandes, Itanna Oliveira

; Silva-Júnior, José Osvaldo

; Gomes, Lucas Roberto Pereira

; Monné, Marcela Laura

; Castro, Marcelo Cutrim Moreira de

; Silva, Marcelo Peixoto Gomes da

; Couri, Márcia Souto

; Gottschalk, Marco Silva

; Soares, Matheus Mickael Mota

; Monné, Miguel Angel

; Rafael, Miriam Silva

; Casagrande, Mirna Martins

; Mielke, Olaf Hermann Hendrik

; Grossi, Paschoal Coelho

; Pinto, Paula Jéssica Costa

; Bartholomay, Pedro Reck

; Sobral, Rafael

; Heleodoro, Raphael Aquino

; Machado, Renato José Pires

; Corrêa, Robson Crepes

; Hutchings, Rosa Sá Gomes

; Ale-Rocha, Rosaly

; Santos, Sandra Duque dos

; Lima, Sheila Pereira de

; Mahlmann, Thiago

; Silva, Vera Cristina

; Fernandes, Daniell Rodrigo Rodrigues

Revista Brasileira de Entomologia

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2020, Volume 64 N. 3 elocation e20200052

Abstract: En | Text: En | PDF: En

ABSTRACT Hexapods, commonly known as insects, are a neglected taxonomic group in the Fernando de Noronha archipelago, with unanswered questions about their species richness and the ecological processes in which they are involved (e.g., colonization, introduction, establishment, and extinction). Herein, we provide an updated Hexapod checklist with current nomenclatural combinations. The entomofauna of the Fernando de Noronha archipelago is currently composed of 453 species in 21 orders. The orders, and their respective number of species, are: Blattaria (9), Coleoptera (118), Collembola (29), Dermaptera (3), Diplura (1), Diptera (134), Embioptera (1), Hemiptera (29), Hymenoptera (59), Isoptera (2), Lepidoptera (25), Mantodea (1), Neuroptera (3), Odonata (5), Orthoptera (11), Phasmatodea (1), Phthiraptera (6), Psocoptera (3), Siphonaptera (1), Thysanoptera (10), and Zygentoma (2). The archipelago has 263 new taxon records (family + genera + species). Thirty-eight species (3.39%) were described from local specimens and most of them are likely endemic species. This study more than doubles our knowledge (from the previous 190 records) of the entomofauna in this large Brazilian archipelago. This study also provides a baseline for studies on its conservation status and for implementing future environmental management programs.

https://doi.org/10.1590/1806-9665-rbent-2020-0052 2462 downloads

Role of Research and Development Institutions and AgTechs in the digital transformation of Agriculture in Brazil
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Romani, Luciana Alvim Santos

; Bariani, Joice Machado

; Drucker, Debora Pignatari

; Vaz, Glauber José

; Mondo, Vitor Henrique Vaz

; Moura, Maria Fernanda

; Bolfe, Edson Luis

; Sousa, Pedro Henrique Pimentel de

; Oliveira, Stanley Robson de Medeiros

; Luchiari Junior, Ariovaldo

Revista Ciência Agronômica

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2020, Volume 51 N. spe elocation e20207800

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO O agronegócio brasileiro vem se modernizando pela intensa adoção de tecnologias, com aumento de produtividade e redução de riscos. Mais recentemente, observa-se um crescente aumento no uso das tecnologias digitais no campo, fazendo emergir a chamada Agricultura Digital. Neste contexto, este artigo apresenta o Programa de Aceleração de startups, denominado TechStart Agro Digital, uma iniciativa da Embrapa Informática Agropecuária e da aceleradora Venture Hub com o apoio de vários atores do ecossistema de inovação agrícola. Este trabalho apresenta a metodologia de aceleração tecnológica e de negócios com foco no agronegócio, proposta pelas duas instituições, ilustrando sua aplicação no primeiro ciclo do programa em 2019. Os resultados demonstram que as 11 startups graduadas no Programa demonstraram um aperfeiçoamento e crescimento após os 6 meses de aceleração, viabilizando a proposição de tecnologias mais consolidadas e focadas nos reais problemas da agricultura. O acompanhamento pós-programa indica que estas AgTechs têm auxiliado o produtor rural, efetiva e eficazmente, agregando valor à agricultura brasileira.

ABSTRACT The Brazilian agribusiness sector has been witnessing increasing modernization, caused by the extensive adoption of technologies, with increase in productivity and reduction of risks In addition, the use of digital technologies in farms has recently been increasing, engendering the emerging field of digital agriculture. In this context, this article presents a startup acceleration program, called TechStart Agro Digital, an initiative of Embrapa Agricultural Informatics and Venture Hub with the support of various stakeholders in the agricultural innovation ecosystem. Further, this article presents a methodology for technological and business acceleration focused on agribusinesses, which was proposed by the two institutions, and its application in the first cycle of the program in 2019. The results show that the 11 startups that graduated from the program demonstrated an improvement and growth six months after the acceleration program, and validate the potential of the program in facilitating the development of technologies that are more consolidated and focused on the real problems of agriculture. The post-program follow-up indicates that these agricultural technology startups and organizations (AgTechs) have helped rural producers effectively and efficiently, thereby adding value to Brazilian agriculture.

https://doi.org/10.5935/1806-6690.20200082 63 downloads

10.

Anti-inflammatory Effect of a Goji Berry Extract (Lycium barbarum) in Rats Subjected to Inflammation by Lipopolysaccharides (LPS)
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Ávila, Caroline Nickel

; Trindade, Fernanda Moura Ribeiro

; Penteado, Júlia Oliveira

; Janke, Fernanda

; Schneider, Janaína Pereira

; Uecker, Júlia Neitzel

; Rincón, Joao Alveiro Alvarado

; Barros, Carlos Castilho de

; Andreazza, Robson

; Pieniz, Simone

Brazilian Archives of Biology and Technology

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2020, Volume 63 elocation e20180612

Abstract: En | Text: En | PDF: En

Abstract The present study aimed to evaluate the anti-inflammatory potential of a Lycium barbarum (L. barbarum) fruit extract in Wistar rats submitted to a palatable diet presenting systemic inflammation induced by lipopolysaccharides (LPS). Forty-two Wistar female rats (Rattus Novergicus) were used with 60 days old. The animals were feed for 60 days and divided in six groups (n=7): standard diet+water; standard diet+L. barbarum; palatable diet+water; palatable diet+L. barbarum; standard diet+water+LPS; standard diet+L. barbarum+LPS. A significant difference was shown between the analyzed groups concerning C-reactive protein, with the standard diet+water+LPS group presenting the highest inflammatory response in comparison to the other groups. Decreased inflammatory response was observed in the group administered a palatable diet along with the fruit extract when compared to the group that received only a palatable diet. Significant decrease in glutamic-oxaloacetic transaminase activity was observed in the standard diet+L. barbarum+LPS group compared to the standard diet+water group, as well as in the palatable diet+L. barbarum group compared to the palatable diet+water group. A significant increase in creatinine in the standard diet+water+LPS group was observed in according to the L. barbarum administration groups. The gene expression of the inflammatory markers genes in the liver showed a significant increase in TNF-α and IL-6 genes in the group treated with standard diet+L. barbarum+LPS when compared to the standard diet+LPS group. Thus, the administered L. barbarum extract displays the potential to reduce inflammatory responses induced by LPS and a palatable diet.

https://doi.org/10.1590/1678-4324-2020180612 1002 downloads

11.

AMB Guidelines: COVID –19
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Ferreira, Lincoln Lopes

; Sampaio, Diogo Leite

; Chagas, Antonio Carlos Palandri

; Guimarães, Hélio Penna

; Hajjar, Ludhmila Abrahão

; Lobo, Suzana Margareth Ajeje

; Abdo, Carmita Helena Najjar

; Bonamigo Filho, José Luiz

; Bacha, Helio Arthur

; Moura, Robson Freitas de

; Bernardo, Wanderley Marques

Revista da Associação Médica Brasileira

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2020, Volume 66 Suppl. 2 Pages 17 - 21

Abstract: En | Text: En | PDF: En

https://doi.org/10.1590/1806-9282.66.s2.17 1235 downloads

12.

Stored diaspores of Astronium urundeuva Fr. (M. Allemão) Engl. (Anacardiaceae) submitted to hydropriming
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Alves, Rafael Mateus

; Silva, Monalisa Alves Diniz da

; Silva, Elania Freire da

; Alves, Robson José Rodrigues

; Moura, Débora Purcina de

; Silva, Joyce Naiara da

Journal of Seed Science

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2020, Volume 42 elocation e202042026

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo: O processo de deterioração das sementes é tido como irreversível, mas técnicas como o priming são realizadas após o armazenamento visando atenuar os efeitos deletérios do envelhecimento. Objetivou-se avaliar o desempenho fisiológico de diásporos de A. urundeuva quando armazenados e, posteriormente, submetidos ao priming e à secagem, testando-se, assim, a hipótese de que o hidrocondicionamento funcionaria como um atenuador da deterioração. Adotou-se o delineamento inteiramente casualizado em esquema fatorial triplo 2x4x4, sendo dois ambientes (laboratório e câmara refrigerada), quatro tempos de armazenamento (0, 45, 90 e 180 dias) e quatro períodos de hidratação (0 h/diásporos secos, 5 h, 14 h 30 min e 23 h 30 min). Avaliou-se emergência, índice de velocidade e número de dias para a ocorrência de 50% de emergência, assim como o comprimento e a massa seca da parte aérea e do sistema radicular. O armazenamento de diásporos de A. urundeuva por 180 dias acarreta a redução do desempenho fisiológico, independente do ambiente. Os períodos de hidrocondicionamento não são eficientes para atenuar os efeitos deletérios da deterioração. O hidrocondicionamento por 23 h e 30 min proporciona um estabelecimento mais rápido das plântulas.

Abstract: Seed deterioration is an irreversible process. However, techniques such as priming have been used after storage, in order to mitigate the harmful effects of aging. This study aimed to evaluate the physiological performance of A. urundeuva diaspores when stored and, subsequently, subjected to priming and drying, thus testing the hypothesis that hydropriming would mitigate deterioration. A completely randomized design was adopted, in a triple factorial scheme 2x4x4, considering two environments (laboratory and refrigerated chamber), four storage times (0, 45, 90, and 180 days), and four hydration times (0 h/dry diaspores, 5 h, 14 h 30 min, and 23 h 30 min). Emergence, speed index, and the number of days to 50% emergence were assessed, as well as length and dry mass of both shoot and root systems. The storage of A. urundeuva diaspores for 180 days leads to a reduction in their physiological performance, regardless of the environment. The hydropriming times are not effective in attenuating the harmful effects of deterioration. Nevertheless, hydropriming for 23 h 30 min provides a faster seedling establishment.

https://doi.org/10.1590/2317-1545v42236762 760 downloads

13.

Improvement of Polypropylene Adhesion by Kraft Lignin Incorporation
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Sousa Junior, Rogério Ramos de

; Gouveia, Julia Rocha

; Nacas, Amanda Martins

; Tavares, Lara Basilio

; Ito, Nathalie Minako

; Moura, Erivaldo Nascimento de

; Gaia, Felipe Ariel

; Pereira, Robson Fernando

; Santos, Demetrio Jackson dos

Materials Research

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2019, Volume 22 N. 2 elocation e20180123

Abstract: En | Text: En | PDF: En

Low surface energy and poor adhesion are well-known characteristics of polypropylene (PP). Surface treatments such as plasma, corona, and laser are usually applied to overcome these limitations. However, current studies highlight the incorporation of hydrophilic or amphiphilic polymers into hydrophobic low-surface-energy polymers as an alternative for increasing surface energy and thus improving adhesion. Lignin could be a promising amphiphilic polymer for use in increasing surface energy. In this work, PP/kraft lignin composites were obtained by incorporating up to 5 wt% of kraft lignin (KL) into a PP matrix. Corona treatment was applied to pristine PP and composites surfaces. Contact angle measurements and peeling tests were carried out to investigate the effects of KL incorporation and corona treatment on the surface energy and the mechanical strength of adhesion. Differential scanning calorimetry (DSC) was used to evaluate the PP’s crystallinity index and recrystallization temperature and to dismiss their effects on the surface energy changes. Scanning electron microscopy (SEM) was applied to investigate the lignin dispersion. The results show that KL incorporation has potential as a method to improve the surface energy of PP, improve its poor adhesion, and enhance the effects of corona treatment.

https://doi.org/10.1590/1980-5373-mr-2018-0123 1581 downloads

14.

Study of the Corrosive Behavior of the AISI 1020 Steel in Acid Crude Oil by Microscopic Techniques (LM, AFM and SEM/EDX) and Raman Spectroscopy
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Dias, Heloisa P.

; Barros, Eliane V.

; Sad, Cristina M. S.

; Yapuchura, Enrique R.

; Gomes, Alexandre O.

; Moura, Robson

; Pinto, Fernanda E.

; Domingos, Débora V.

; Aquije, Glória M. F. V.

; Lacerda Jr., Valdemar

; Romão, Wanderson

Journal of the Brazilian Chemical Society

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aug 2018, Volume 29 N. 8 Pages 1690 - 1700

Abstract: En | Text: En | PDF: En

Microscopic techniques were combined to study the influence of corrosion rate on the morphologic behavior of AISI 1020 steel specimens submitted to thermal degradation of a typical acid crude oil (total acid number (TAN) = 2.1390 mg KOH g-1 and total sulfur (S) = 0.7778 wt.%). The techniques used were light microscopy (LM), scanning electron microscopy/energy dispersive spectroscopy (SEM/EDX), atomic force microscopy (AFM) as well as Raman spectroscopy. Assays were performed in six different degradation time (t = 6, 12, 24, 36, 48 and 72 h) at 320 ºC. After the exposure of the specimens to petroleum, a reduction above 37% in the TAN after t = 72 h was observed, with a maximum corrosion rate during the first periods of degradation (t = 6 and 12 h). Correlating the TAN and corrosion rate data with the microscopic data, the images of LM, AFM, and SEM/EDX showed that after 6 h of exposure to petroleum, a passivation film was formed on the surface of the steel. This film consisted of two layers, an external one, formed of FeS, and an internal one, composed of iron oxides and oxyhydroxides. However, after 48 h of thermal degradation, this morphology was altered to a single layer of FeS coating the steel surface.

https://doi.org/10.21577/0103-5053.20180043 793 downloads

15.

Incontinência urinária e função sexual feminina: revisão integrativa de questionários validados
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Brasil, Daniele Matos de Moura

; Nicolau, Ana Izabel Oliveira

; Bilhar, Andreísa Paiva Monteiro

; Karbage, Sarah Arcanjo Lino

; Lucena, Suellen Viana

; Carmo, Tamires Ferreira do

; Bezerra, Leonardo Robson Pinheiro Sobreira

Acta Paulista de Enfermagem

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2018, Volume 31 N. 5 Pages 558 - 563

Abstract: Pt En Es | Text: Pt En Es | PDF: Pt | PDF: En | PDF: Es

Resumo Objetivo: Analisar a produção científica nacional e internacional quanto à relação escores dos instrumentos ICIQ-UI-SF (Internacional Consultation on Incontinence Questionnaire – Urinary Incontinence/Short Form (ICIQ-UI/SF) e FSFI (Female Sexual Function Index) na população feminina. Métodos: Revisão integrativa da literatura, realizada durante os meses de Dezembro de 2017 a Maio de 2018, nas bases de dados Scielo, Lilacs, Scopus e Pubmed. As buscas foram conduzidas através da associação dos nomes dos questionários como descritores, sem delimitações quanto ao ano de publicação, idioma e disponibilidade em texto completo. Priorizados achados com nível de evidência de no mínimo 3A para estudos observacionais. Totalizaram 5 artigos científicos. Resultados: As evidências encontradas sobre a relação direta dos instrumentos apresentaram como objetivo predominante a sua aplicação para validar a efetividade de técnicas cirúrgicas para a correção da incontinência urinária. Mesmo diante da melhora da incontinência, os achados divergiram quanto a melhora da função sexual, apresentando modificações apenas em alguns domínios do FSFI ou nenhuma mudança. Apenas um estudo buscou investigar a relação direta dos instrumentos, indicando fraca ligação. Já a busca isolada dos instrumentos, associada com descritores específicos apontara que a incontinência urinária é fator determinante para a deterioração tanto da qualidade de vida quanto e da função sexual. Conclusão: O baixo quantitativo de produções e resultados encontrados demonstraram que é necessário um maior aprofundamento sobre a temática, para um embasamento e qualificação da assistência para portadoras de incontinência urinária.

Abstract Objective: To analyze the national and international scientific production regarding the relationship between the ICIQ-UI-SF (International Consultation on Incontinence Questionnaire – Urinary Incontinence/Short Form (ICIQ-UI/SF) and FSFI (Female Sexual Function Index) in the female population. Methods: Integrative literature review, carried out from December 2017 to May 2018, in the Scielo, Lilacs, Scopus and Pubmed databases. Searches were conducted through the association of the names of the questionnaires as descriptors, without delimitations regarding the year of publication, language, and availability of full text. Findings with a level of evidence of at least 3A for observational studies were prioritized. There was a total of five scientific papers. Results: The evidence found about the direct relationship of the instruments had as predominant objective their application to validate the effectiveness of surgical techniques to correct urinary incontinence. Even with the improvement of incontinence, the findings were different regarding the improvement of sexual function, showing changes only in some FSFI domains, or no change. Only one study sought to investigate the direct relationship of the instruments, indicating a poor connection. On the other hand, the isolated search of the instruments, associated with specific descriptors, indicated that urinary incontinence is a determining factor for the deterioration of both quality of life and sexual function. Conclusion: The low number of productions and results found have shown that a deeper understanding of the subject is necessary for a justification and qualification of care for patients with urinary incontinence.

Resumen Objetivo: Analizar la producción científica nacional e internacional en cuanto a la relación entre los indicadores de los ICIQ-UI-SF (ICIQ-UI / SF) y FSFI (Female Sexual Function Index) en la población femenina. Métodos: Durante los meses de diciembre de 2017 a mayo de 2018, se realizó una revisión integrativa de la literatura en las bases de datos Scielo, Lilacs, Scopus y Pubmed. Las búsquedas se hicieron a través de la asociación de los nombres de los cuestionarios como descriptores, sin delimitaciones en cuanto al año de publicación, idioma y disponibilidad en texto completo. Se priorizaron hallazgos con nivel de evidencia de por lo menos 3A para estudios observacionales. Hubo un total de 5 artículos científicos. Resultados: Las evidencias encontradas sobre la relación directa de los instrumentos presentaron como objetivo predominante su aplicación para validar la efectividad de técnicas quirúrgicas para la corrección de la incontinencia urinaria. Incluso ante la mejora de la incontinencia, los hallazgos divergían en cuanto a la mejora de la función sexual, presentando modificaciones sólo en algunos dominios del FSFI o ningún cambio. Solo un estudio buscó investigar la relación directa de los instrumentos e indicó débil conexión. La búsqueda aislada de los instrumentos, asociada con descriptores específicos, apunta que la incontinencia urinaria es un factor determinante para el deterioro tanto de la calidad de vida como de la función sexual. Conclusión: La poca cantidad de producciones y resultados encontrados demostró que es necesario una mayor profundización sobre la temática para una base y calificación de la asistencia para portadoras de incontinencia urinaria.

https://doi.org/10.1590/1982-0194201800077 3152 downloads

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