Pesquisa | SciELO

ABSTRACT The Caatinga biome in Brazil comprises the largest and most continuous expanse of the seasonally dry tropical forest (SDTF) worldwide; nevertheless, it is among the most threatened and least studied, despite its ecological and biogeographical importance. The spatial distribution of volumetric wood stocks in the Caatinga and the relationship with environmental factors remain unknown. Therefore, this study intends to quantify and analyze the spatial distribution of wood volume as a function of environmental variables in Caatinga vegetation in Bahia State, Brazil. Volumetric estimates were obtained at the plot and fragment level. The multiple linear regression techniques were adopted, using environmental variables in the area as predictors. Spatial modeling was performed using the geostatistical kriging approach with the model residuals. The model developed presented a reasonable fit for the volume m3 ha with r2 of 0.54 and Root Mean Square Error (RMSE) of 10.9 m3 ha–1. The kriging of ordinary residuals suggested low error estimates in unsampled locations and balance in the under and overestimates of the model. The regression kriging approach provided greater detailing of the global wood volume stock map, yielding volume estimates that ranged from 0.01 to 109 m3 ha–1. Elevation, mean annual temperature, and precipitation of the driest month are strong environmental predictors for volume estimation. This information is necessary to development action plans for sustainable management and use of the Caatinga SDTF in Bahia State, Brazil.

https://doi.org/10.1590/1678-992x-2022-0161

Slope position controls prescribed fire effects on soil: a case study in the high-elevation grassland of Itatiaia National Park
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Oliveira, Ana Paula Pessim de

; Silva Neto, Eduardo Carvalho da

; Marcondes, Robson Altiellys Tosta

; Pereira, Marcos Gervasio

; Motta, Marcelo Souza

; Diniz, Yan Vidal de Figueiredo Gomes

; Fagundes, Hugo de Souza

; Delgado, Rafael Coll

; Santos, Otavio Augusto Queiroz dos

; Anjos, Lúcia Helena Cunha dos

Revista Brasileira de Ciência do Solo

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2023, Volume 47 elocation e0230009

Resumo: En | Texto: En | PDF: En

ABSTRACT There is a need for greater knowledge about the medium- and long-term effects of prescribed fire management on soil in ecosystems prone to wildfires and more vulnerable to climate change. This study examined the short- and medium-term effects of prescribed fire on soil chemical properties and chemical fractions of soil organic matter (SOM) in two positions of the landscape in a high-elevation grassland environment. The ecosystem is located in the mountain peaks of southeastern Brazil associated with the Atlantic Forest biome. Prescribed fire was conducted in 2017 to reduce understory vegetation and thus prevent potential severe wildfires. Soil samples were collected at the layers of 0.00-0.10, 0.10-0.20, and 0.20-0.40 m, at eight composite sampling. The composite samples were collected on five different occasions: before the prescribed fire, and 10, 30, 90, and 240 days after the prescribed fire. Soil chemical properties, total organic carbon, labile C, and chemical fractionation of SOM were analyzed. All soil properties investigated were affected by the prescribed fire, with variations in landscape position, duration of effect, and soil layer. In the backslope area, the medium-term effect of fire was negative and induced soil degradation and induced soil degradation. In the footslope area, the system showed greater resilience to the effects of fire, as indicated by the recovery of the soil’s chemical properties. These results can help assess the suitability of controlled burning of vegetation for managing risks of fire in mountainous regions, such as high-elevation grasslands.

https://doi.org/10.36783/18069657rbcs20230009

Synthesis of Eugenol-Fluorinated Triazole Derivatives and Evaluation of Their Fungicidal Activity
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Lima, Ângela M. A.

; Paula, Wenderson T. de

; Leite, Iris C. H. L.

; Gazolla, Poliana A. R.

; Abreu, Lucas M. de

; Fonseca, Victor R.

; Romão, Wanderson

; Lacerda Jr., Valdemar

; Queiroz, Vagner T. de

; Teixeira, Róbson R.

; Costa, Adilson V.

Journal of the Brazilian Chemical Society

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Out 2022, Volume 33 Nº 10 Páginas 1200 - 1210

Resumo: En | Texto: En | PDF: En

Eugenol (C10H12O2, 4-allyl-2-methoxyphenol) is a phenolic natural product that has several biological activities and possibilities of applications. It is herein described the synthesis of eugenol-fluorinated triazole derivatives and evaluation of their fungicidal activity. The reaction of eugenol with epichlorohydrin resulted in the preparation of (±)-2-((4-allyl-2-methoxyphenoxy)methyl)oxirane (1) in 88% yield. The azidolysis of 1 with sodium azide gave the azido-alcohol (±)-1-(4-allyl-2-methoxyphenoxy)-3-azidopropan-2-ol (2) in 94% yield. The CuAAc reaction between compound 2 and different terminal alkynes afforded a series of eleven derivatives (3a 3k) within 48-80% yield. All the synthesized compounds were characterized by infrared (IR) and nuclear magnetic resonance (1H and 13C) spectroscopies and high-resolution mass spectrometry. The in vitro inhibitory activity of the compounds on the mycelial growth of a strain of Colletotrichum sp., that causes anthracnose disease on papaya fruits, was evaluated. The best result was observed for compound 1-(4-allyl-2-methoxyphenoxy)-3-(4-(2-fluorophenyl)-1H-1,2,3-triazol-1-yl)propan-2-ol (3d) that showed a mean growth-inhibition zone of 5.10 mm in a well-diffusion assay, and may serve as a template for additional structural modifications, aiming for more potent fungicidal activity.

https://doi.org/10.21577/0103-5053.20220040

Diametric distribution modeling of forest species in arboreal Caatinga vegetation, Brazil
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Brito, Adriano Castro de

; Paula, Alessandro de

; Barreto-Garcia, Patrícia Anjos Bittencourt

; Lima, Robson Borges de

; Souza, Deoclides Ricardo

Revista Ceres

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Ago 2022, Volume 69 Nº 4 Páginas 464 - 469

Resumo: En | Texto: En | PDF: En

ABSTRACT The distribution modeling in diameter classes is an important indicator of the potential use of a forest community, as well as the projection of future forest production. The objective of this study was to evaluate the diametric structure and to select probabilistic density functions for three woody species in forested arboreal Caatinga vegetation in Bahia, Brazil. The study was carried out in the Contendas do Sincorá National Forest in the state of Bahia, Brazil. A total of 16 plots of 20 x 20 m were installed and all individuals with diameter at breast height equal to or greater than 5.0 cm were measured. The three species with the highest population density (Commiphora leptophloeos, Manihot catinga and Patagonula bahiensis) were selected for analysis and modeling of the diametric structure. Four probabilistic density models were adjusted. The Akaike information criterion was used to select the best model. The results found indicated that the three species presented a decreasing type curve. The Log-Normal function best described the diametric distribution and it can be indicated to describe the diametric distribution and assist in making decisions about the management and conservation of these species. It is concluded that the Normal function was less adequate to represent the distribution of the studied species.

https://doi.org/10.1590/0034-737x202269040011

BIODEGRADABLE SODIUM CARBOXYMETHYL CELLULOSE MEMBRANES CONTAINING MELALEUCA ESSENTIAL OILS FOR WOUND CARE MATERIAL
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Soares, Silvane Holanda

; Peixoto, Hugo Cavalcante

; Prudencio, Edlene Ribeiro

; Luchese, Rosa Helena

; Araújo, Robson

; Moreira, Ana Paula Duarte

; Araújo, Leonardo Sales

; Rosado, Luiz Henrique Guerreiro

; Cunha, Rommel Sauerbronn da

; Castro, Rosane Nora

; Oliveira, Renata Nunes

Química Nova

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Ago 2022, Volume 45 Nº 8 Páginas 941 - 948

Resumo: En | Texto: En | PDF: En

NaCMC is a biocompatible polymer that can be crosslinked with citric acid to form a gel matrix. Melaleuca oils have antimicrobial and anti-inflammatory properties with potential for wound healing. The goal of this work was to investigate the characteristics of NaCMC-Melaleuca oils gels. The gels were characterized by FTIR, TGA, mechanical analysis, and in vitro swelling and S. aureus inhibition tests. The oils were characterized using chromatography, presenting high values of (1,8-cineol/terpinen-4-ol), and evaluated for confirmation of their effect against S. aureus. The samples showed physical interactions between NaCMC, citric acid and the Melaleuca oils. Erosion in saline solution was higher in the gels with oils, attributable to interference with crosslinking. The membranes presented high contribution of relaxation mechanism and low contribution of Fickian diffusion regarding the swelling ability. The presence of the oils increased thermal stability and diminished gel fraction and mechanical properties, indicating that the oils interact with the matrix anchoring the chains. Although melaleuca oils themselves were active against S. aureus and CA was responsible for the NaCMC hydrogels activity, the incorporation of melaleuca oils in NaCMC gels was not reported previously. This report indicates that NaCMC hydrogel may be a proper matrix for essential oils incorporation.

https://doi.org/10.21577/0100-4042.20170903

Synthesis and Anti-Chikungunya Virus (CHIKV) Activity of Novel 1,4-Naphthoquinone Sulfonamide and Sulfonate Ester Derivatives
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Pacheco, Paulo A. F.

; Gonzaga, Daniel T.

; Cirne-Santos, Cláudio C.

; Barros, Caroline S.

; Gomes, Max W. L.

; Gomes, Rafaela S. P.

; Gonçalves, Mariana C.

; Ferreira, Vitor F.

; Rabelo, Vitor W.

; Abreu, Paula A.

; Faria, Robson X.

; Resende, Gabriel O. de

; Rocha, David R. da

; Paixão, Izabel C. N. P.

; Silva, Fernando C. da

Journal of the Brazilian Chemical Society

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Jun 2022, Volume 33 Nº 6 Páginas 556 - 569

Resumo: En | Texto: En | PDF: En

Chikungunya virus (CHIKV) is a re-emerging disease caused by an alphavirus of the Togaviridae family. Since its first description in 1952, the disease has spread worldwide, affecting populations in both tropical and temperate countries. To date, there is no licensed vaccine or specific pharmacological treatment. Therefore, there is an increasing urgency in developing new antiviral drugs capable of specifically inhibiting viral replication. In the present work, we report the synthesis and antiviral activity evaluation of nineteen naphthoquinone derivatives, containing a sulfonamide or sulfonate group. Cell viability assays indicated a low toxic potential for all tested compounds and inhibitory assays against CHIKV identified five compounds with potent activity. The compounds were also evaluated for their virucidal potential, and the results demonstrated that compound 11a exhibited a virucidal effect higher than 70% in the treatment with 20 µM. Furthermore, in silico studies were performed to predict the antiviral drug targets.

https://doi.org/10.21577/0103-5053.20220010

Prediction of diametric and dynamic structures in a semiarid forest (Caatinga) area submitted to Forest Management, Brazil
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Brito, Adriano Castro de

; Paula, Alessandro de

; Barreto-Garcia, Patrícia Anjos Bittencourt

; Souza, Deoclides Ricardo

; Lima, Robson Borges de

Revista Ceres

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Fev 2022, Volume 69 Nº 1 Páginas 92 - 101

Resumo: En | Texto: En | PDF: En

ABSTRACT Dynamics studies associated with prognosis can support planning actions for the conservation and sustainable use of forest resources. Therefore, the objective of this study was to evaluate the dynamics and predict the diameter structure using the Markov chain model for an area of caatinga forest submitted to different management practices. The study was carried out in the Contendas do Sincorá National Forest in the state of Bahia. Four treatments were installed, corresponding to three management systems and one control. Data was obtained measuring all individuals with a diameter greater than or equal to 5 cm. The measurements were performed at two moments in 2015 and 2018. The results indicated that the selective cut-by-diameter treatment had the lowest mortality rate and the highest recruitment rate. Predictions of the diameter structure using the Markov chain do not generally present statistical differences (α0.01) between the observed and expected frequencies for the year 2018. It was concluded that the basal area showed a tendency for recovery and growth in the treatments which involved suppression compared to the control, with no statistically significant differences among treatments until the moment after intervention.

https://doi.org/10.1590/0034-737x202269010012

Indicadores de desempenho utilizados pelas empresas hoteleiras da cidade de Braga/PT à luz do balanced scorecard
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Pederneiras, Marcleide Maria Macêdo

; Silva, Robson do Vale

; Menezes, Paula Dutra Leão de

; Soares, Jonathan Muniz

Revista Brasileira de Pesquisa em Turismo

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2022, Volume 16 elocation e-2331

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

Resumo A pesquisa objetivou conhecer e analisar os indicadores de desempenho utilizados pelos empreendimentos hoteleiros, da cidade de Braga/PT, evidenciando como são utilizados, à luz da teoria dos indicadores do Balanced Scorecard. Realizou-se uma pesquisa bibliográfica, com a finalidade de levar o conhecimento que já foi explorado na literatura especializada e também uma pesquisa de campo, através da aplicação de um questionário junto aos gestores das empresas hoteleiras enviado por correio eletrônico com o link do questionário. A amostra foi constituída pelas empresas hoteleiras na categoria de 2, 3, 4 e 5 estrelas totalizando 21 hotéis. Os dados foram compilados e tabulados na planilha EXCEL e convertidos em um arquivo compatível com o pacote estatístico Statistical Package for the Social Sciences (SPSS). Concluiu-se que 81% dos hotéis respondentes utilizam Sistema de Medição de Desempenho (SMD) e que parte destes (56,1%) faz a utilização de um sistema de desempenho com indicadores calculados através do EXCEL e em todas as empresas hoteleiras pesquisadas são realizadas reuniões com o objetivo de debater sobre o desempenho. Os indicadores mais utilizados são os financeiros (rentabilidade, receita total e faturamento – valor) e nos indicadores não financeiros, os mais utilizados são os de satisfação dos clientes e fidelidade aos clientes.

Abstract This research aimed to know and analyse the performance indicators used by hotel enterprises in the city of Braga/PT, identifying how they are used in light of the Balanced Scorecard indicator. A bibliographic research was carried out, with the purpose of bringing to light what has already been explored in specialized literature and a field survey was also carried out, which used as a data collection tool a questionnaire applied to hotel managers sent by e-mail, which included the presentation of the survey, the invitation to participate and the link to the questionnaire. The sample consisted of the hotel companies in the category of 2, 3, 4 and 5 stars totaling 21 hotels. The data was compiled and tabulated in the EXCEL spreadsheet and converted into an archive compatible with the Statistical Package for the Social Sciences (SPSS). It was concluded that 81% of the responding hotels use a Performance Measurement System (PMS) and that part of these (56.1%) uses a performance system with indicators calculated through EXCEL and in all the hotel companies surveyed meetings are held to discuss performance. The most used indicators are the financial ones (profitability, total revenue and billing - value) and in the non-financial indicators, the most used are the ones of customer satisfaction and loyalty to customers.

Resumen La presente investigación tuvo como objetivo conocer y analizar los indicadores de desempeño utilizados por las empresas hoteleras en la ciudad de Braga / PT, identificando cómo se utilizan, a la luz de la teoría de los indicadores del Balanced Scorecard. Se realizó una investigación bibliográfica, con el propósito de acercar al conocimiento lo ya explorado en la literatura especializada y también se realizó una investigación de campo, que utilizó como instrumento de recolección de datos un cuestionario aplicado a los gerentes de las empresas hoteleras enviado por correo electrónico, que incluía la presentación de la investigación, la invitación a participar y el enlace al cuestionario. La muestra estuvo constituída por empresas hoteleras en la categoría de 2, 3, 4 y 5 estrellas, totalizando 21 hoteles. Los datos fueron compilados y tabulados en la hoja de cálculo EXCEL y convertidos en un archivo compatible con el paquete estadístico Statistical Package for the Social Sciences (SPSS). Se concluyó que el 81% de los hoteles encuestados utilizan Sistema de Medición del Rendimiento (SMR) y que parte de ellos (56,1%) utilizan un sistema de desempeño con indicadores calculados a través de EXCEL y en todas las empresas hoteleras encuestadas se llevan a cabo reuniones para discutir el desempeño. Los indicadores más utilizados son los financieros (rentabilidad, ingresos totales y facturación - valor) y en los indicadores no financieros los más utilizados son los de satisfacción del cliente y la fidelización del cliente.

https://doi.org/10.7784/rbtur.v16.2331

Genetic diversity and correlation between morphological traits of pequi fruits (Caryocar brasiliense Camb.) with and without thorns at the endocarp
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GOMES, BRUNO H.

; FARIA, MARCOS V.

; MENDES, MARIANA G.

; BONETTI, ANA MARIA

; O. JÚNIOR, ROBSON JOSÉ DE

; NOGUEIRA, ANA PAULA O.

Anais da Academia Brasileira de Ciências

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2022, Volume 94 Supl. 4 elocation e20210016

Resumo: En | Texto: En | PDF: En

Abstract Morphological characteristics of pequi fruits (Caryocar brasiliense) allows us to obtain information for the conservation, breeding, and detect genetic variability. Thus, the aims of this research were to characterize the genetic diversity of Caryocar brasiliense that produce fruits with and without thorn at the endocarp; determine the important characters in the study of genetic diversity, and to estimate phenotypic and genotypic correlations. 80 fruits with thorns and 90 fruits without thorns were evaluated. Data were used for analysis: Euclidian distance as a measure of dissimilarity and the Tocher method for delimitation of groups; Principal Component Analysis, and genotypic and phenotypic correlations. Genetic dissimilarity of C. brasiliense ranged from 0.066 (B6-D6) to 0.908 (A14-B3). Tocher method allowed dividing the matrices into three groups, the dendrogram into five groups, and the principal components allowed the distribution in 8 groups. We observed 15 significant correlations for characters of fruit with thorns and 31 correlations for characters of fruit without thorns. The weight of the fruit (with thorns) and the pyrene yield (without thorns) are relevant correlations for production. The groupings generated allowed the classification of the matrices into distinct sets. Allowed the identification of potential producers plants that could be used in breeding programs.

https://doi.org/10.1590/0001-3765202220210016

10.

Spatial variability of soil penetration resistance in the lowland area cultivated with soybean
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Brasil Neto, Edgar Salis

; Russini, Alexandre

; Amaral, Lúcio de Paula

; Pinho, Paulo Jorge de

; Farias, Marcelo Silveira de

; Giacomeli, Robson

Ciência Rural

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2021, Volume 51 Nº 6 elocation e20200452

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

RESUMO: Este trabalho teve como objetivo identificar a variabilidade espacial da resistência do solo à penetração e na produtividade da cultura da soja, em área de várzea. Foram realizadas determinações de resistência do solo à penetração, em quatro profundidades (0 a 0,10 m; 0,11 a 0,20 m; 0,21 a 0,30 m e 0,31 a 0,40 m); umidade volumétrica do solo, em duas profundidades (0 a 0,20 m e 0,21 a 0,40 m); e produtividade da soja em uma área de 1,13 hectares, utilizando-se malha amostral de 10 x 10 m. Os dados foram submetidos à análise estatística descritiva. Realizou-se análise de correlação linear simples de Pearson (p≤0,05) e a dependência espacial foi avaliada pela análise de semivariogramas isotrópicos, utilizando os modelos: esférico, exponencial, linear e gaussiano. Os resultados indicaram que, a resistência do solo à penetração aumentou em profundidade, com valores restritivos ao crescimento radicular entre 0,05 e 0,35 m. Não se obteve correlação entre produtividade e resistência do solo à penetração sendo que, para os dados de resistência do solo à penetração, os semivariogramas não apresentaram uma região ascendente definida. Para as condições em que o experimento foi realizado, a malha amostral de 10 x 10 m utilizada foi adequada para avaliar a variabilidade espacial da resistência do solo à penetração em profundidades superiores a 0,10 m.

ABSTRACT: This study determined the spatial variability of soil penetration resistance and yield of the soybean crop in lowland areas. The soil resistance to penetration at four different depths (0 to 0.10 m; 0.11 to 0.20 m; 0.21 to 0.30 m and 0.31 to 0.40 m), volumetric humidity of the soil at two depths (0 to 0.20 m and 0.21 to 0.40 m) and soybean yield were determined in an area of 1.13 hectares, using a sample mesh of 10 x 10 m. The corresponding data were subjected to descriptive statistical analysis. Pearson’s simple linear correlation analysis (p≤0.05) was conducted and the spatial dependence was assessed by analyzing the isotropic semivariograms using spherical, exponential, linear, and Gaussian models. The results showed that the soil penetration resistance increased with depth, with restrictive values to root growth between 0.05 and 0.35 m. There was no correlation between yield and soil penetration resistance, and the semivariograms did not show a defined ascending region regarding the soil penetration resistance data. For the conditions under which the experiment was conducted, the sample 10 x 10 m mesh was suitable for assessing the spatial variability of soil resistance to penetration in depths exceeding 0.10 m.

https://doi.org/10.1590/0103-8478cr20200452 376 downloads

11.

Study of the Life Span of Adhesively Bonded Single Lap Joint Due to Creep
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Carneiro Neto, Ranulfo Martins

; Paula, Mila Siqueira de

; Sampaio, Eduardo Martins

; Rohem, Ney Robson Ferreira

; Vignoli, Lucas Lisbôa

Matéria (Rio de Janeiro)

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2021, Volume 26 Nº 4 elocation e13121

Resumo: En | Texto: En | PDF: En

ABSTRACT Adhesive joints are often used in several areas, including offshore systems and automobiles. The development of suitable models to predict the joint behavior has several challenges, especially due to creep phenomena. The aim of this study is to investigate the creep lifetime of single lap joints considering two different adhesives (epoxy and polyurethane). Long-term tests are performed using a pneumatic creep equipment (PCE). The parameters to the creep model are obtained for each adhesive, where load and life span are related. The models obtained and the times of joints life span are compared with two other adhesives previously studied. The results confirm that the knowledge of the lap shear strength value is just a reference to the designer, however experimental tests in creep for each different adhesive is necessary. The comparison between the joints bonded with two different epoxies shows similar results, what was demonstrated by the similar curves obtained by the models. The comparison between polyurethane adhesives did not show similar behavior in the curves obtained from the models, especially in the time of life span.

https://doi.org/10.1590/s1517-707620210004.1321

12.

Pelvic floor dysfunction in primiparous women up to 6 months after delivery: cohort study
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Oliveira, Sheyla Guimarães

; Caroci-Becker, Adriana

; Mendes, Edilaine de Paula Batista

; Riesco, Maria Luiza Gonzalez

; Oliveira, Robson da Costa

; Oliveira, Sonia Maria Junqueira Vasconcellos de

Revista Brasileira de Enfermagem

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2021, Volume 74 Nº 5 elocation e20200607

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

RESUMO Objetivo: Analisar a força muscular do assoalho pélvico (FMAP), a incontinência urinária (IU) e anal (IA) e a dispareunia em primíparas até 6 meses após o parto normal ou cesariana. Métodos: Coorte prospectiva com 169 mulheres (128 parto normal, 41 cesariana), acompanhadas entre 50-70 e 170-190 dias pós-parto, quando foi mensurada a FMAP, mediante a perineometria, e avaliadas a IU e IA e a dispareunia, mediante entrevista. Resultados: A FMAP, a IU e a dispareunia foram similares entre os tipos de parto. A diferença foi significativa apenas para o tempo decorrido, com melhora no período estudado (2 e 6 meses pós-parto). Em relação à IA, houve diferença significante entre 2 e 6 meses pós-parto, com interação entre tipo de parto e tempo (p=0,022). Conclusão: O tipo de parto não mostrou influência nas disfunções do assoalho pélvico, exceto na IA. Para todos os desfechos, houve melhora no período estudado.

ABSTRACT Objective: To analyze pelvic floor muscular strength (PFMS), urinary (UI) and anal (AI) incontinence and dyspareunia in primiparous women up to 6 months after normal or cesarean delivery. Methods: this is a prospective cohort with 169 women (128 normal births, 41 cesarean sections), followed between 50-70 and 170-190 days postpartum, when PFMS was measured using perineometry, and UI and AI and dyspareunia, through interview. Results: PFMS, UI and dyspareunia were similar between types of delivery. The difference was significant only for the time elapsed, with improvement in the studied period (2 and 6 months postpartum). Regarding AI, there was a significant difference between 2 and 6 months postpartum, with an interaction between type of delivery and time (p=0.022). Conclusion: the type of delivery did not show any influence on pelvic floor dysfunctions, except for AI. For all outcomes, there was an improvement in the period studied.

RESUMEN Objetivo: Analizar fuerza muscular del suelo pélvico (FMSP), incontinencia urinaria (IU) y anal (IA) y dispareunia en mujeres primíparas hasta 6 meses después del parto normal o por cesárea. Métodos: Cohorte prospectiva con 169 mujeres (128 partos normales y 41cesáreas), seguidas entre 50-70 y 170-190 días posparto, cuando se midió la FMSP mediante perineometría, y se evaluó la IU, IA y dispareunia, mediante entrevista. Resultados: FMSP, IU y dispareunia fueron similares entre los tipos de parto. La diferencia fue significativa solo para el tiempo transcurrido, com mejoría em el período estudado, com mejoría em el período estudiado (2 y 6 meses posparto). Em cuanto a la IA, hubo una diferencia significativa entre los 2 y 6 meses posparto, com uma interacción entre el tipo de parto y el tiempo (p=0,022). Conclusión: El tipo de parto no mostro influencia em las disfunciones del suelo pélvico, excepto em la IA. Para todos los resultados, hubo uma mejora em el período estudiado.

https://doi.org/10.1590/0034-7167-2020-0607 393 downloads

13.

Spray technology for deposition of droplets on coffee leaves and fruits1
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Zampiróli, Renan

; Alvarenga, Cleyton Batista de

; Parenti, Matheus Vilhena

; Cunha, João Paulo Arantes Rodrigues da

; Celoto, Fernando Juari

; Rinaldi, Paula Cristina Natalino

; Sasaki, Robson Shigueaki

Pesquisa Agropecuária Tropical

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2021, Volume 51 elocation e66806

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

RESUMO Para o sucesso do controle fitossanitário no cafeeiro, é importante uma correta deposição de calda ao longo do dossel. Contudo, a estrutura da planta dificulta essa distribuição. Objetivou-se avaliar a deposição de um traçador em folhas e frutos, na cultura do café, em função da taxa de aplicação e do tipo de ponta de pulverização, bem como do emprego de um sistema de pulverização eletrostática. Utilizou-se pulverizador hidropneumático com pontas hidráulicas de jato cônico vazio, da série TVI (gotas grossas com indução de ar) e JA (gotas finas), em taxas de 200 e 400 L ha-1. Também foi avaliado um sistema eletrostático, com ponta SPE-2 e taxa de 200 L ha-1, instalado no mesmo pulverizador. Foram determinadas a deposição do traçador em folhas e frutos dos terços superior, médio e inferior das plantas, bem como as perdas para o solo na projeção da copa, mediante quantificação por espectrofotometria. Os resultados indicaram que a aplicação eletrostática proporciona maior deposição nas folhas do terço superior, em relação à aplicação hidropneumática, independentemente da taxa de aplicação. A ponta TVI produz maior deposição nos frutos do terço médio e maior perda para o solo, em relação à ponta JA. A taxa de aplicação de 400 L ha-1 promove maior deposição nos frutos do terço médio, em relação à de 200 L ha-1, mas também causa maior perda para o solo.

ABSTRACT The correct deposition of spray along the canopy is important for the phytosanitary control in coffee plants; however, the structure of the plant makes this distribution difficult. This study aimed to evaluate the deposition of a tracer on leaves and fruits in coffee cultivation, with respect to the application rate and type of hydraulic nozzle, as well as the use of an electrostatic spraying system. A hydropneumatic sprayer was used, with hydraulic nozzles of empty conical jet of the series TVI (coarse droplets with air induction) or JA (fine droplets), at rates of 200 and 400 L ha-1. An electrostatic system, with SPE-2 nozzle and rate of 200 L ha-1, was also evaluated. The deposition of the tracer on leaves and fruits of the upper, middle and lower thirds of the trees, as well as the losses to the ground in the canopy projection, were quantified using spectrophotometry. The results indicated that the electrostatic application provides a greater deposition on leaves of the upper third than the hydropneumatic application, regardless of the application rate. The use of the TVI nozzle results in a greater deposition on the fruits of the middle third and a greater loss to the ground than the JA nozzle. Although an application rate of 400 L ha-1 results in a greater deposition on the fruits of the middle third than an application rate of 200 L ha-1, it also causes a greater loss to the ground.

https://doi.org/10.1590/1983-40632021v5166806 107 downloads

14.

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 Nº 3 elocation e20200052

Resumo: En | Texto: 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

15.

Preparation and characterization of liposomes loaded with silver nanoparticles obtained by green synthesis
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Espinoza, Joel Toribio

; Novak, Robson Schimandeiro

; Magalhães, Cássia Gonçalves

; Budel, Jane Manfron

; Justus, Barbara

; Gonçalves, Melissa Marques

; Boscardin, Patricia Mathias Döll

; Farago, Paulo Vitor

; Paula, Josiane de Fátima Padiha De

Brazilian Journal of Pharmaceutical Sciences

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2020, Volume 56 elocation e18601

Resumo: En | Texto: En | PDF: En

The objective of this work was to develop and characterize liposomes loaded with silver nanoparticles (LAgNPs) to show improvement in stability characteristics. AgNPs were prepared by the green synthesis method with Aloe vera gel extract and exposure to sunlight. Liposomes were prepared by the modified reverse phase method. Particle size, polydispersity index, zeta potential, as well as the scanning electron microscopy (SEM) morphological aspects of AgNPs and LAgNPs were evaluated. In addition, was used flame atomic absorption spectroscopy to determine the amount of AgNP that was encapsulated in liposomes. The AgNPs presented as amorphous and polydisperse structures, with a mean diameter of 278.46 nm and zeta potential of -18.3 mV. LAgNPs had a mean diameter between 321 and 373 nm, the polydispersity index close to 0.2 and a zeta potential around -40 mV, which indicates greater stability to the AgNPs. The images obtained by SEM show semicircular structures for AgNPs and well-defined spherical shape for LAgNPs. The percentage of encapsulation was between 51.81 to 58.83%. These results showed that LAgNPs were obtained with adequate physicochemical characteristics as a release system.

https://doi.org/10.1590/s2175-97902020000118601 347 downloads

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