Pesquisa | SciELO

ABSTRACT Objective: To report outcomes from the largest multicenter series of penile cancer patients undergoing video endoscopic inguinal lymphadenectomy (VEIL). Materials and Methods: Retrospective multicenter analysis. Authors of 21 centers from the Penile Cancer Collaborative Coalition-Latin America (PeC-LA) were included. All centers performed the procedure following the same previously described standardized technique. Inclusion criteria included penile cancer patients with no palpable lymph nodes and intermediate/high-risk disease and those with non-fixed palpable lymph nodes less than 4 cm in diameter. Categorical variables are shown as percentages and frequencies whereas continuous variables as mean and range. Results: From 2006 to 2020, 210 VEIL procedures were performed in 105 patients. Mean age was 58 (45-68) years old. Mean operative time was 90 minutes (60-120). Mean lymph node yield was 10 nodes (6-16). Complication rate was 15.7%, including severe complications in 1.9% of procedures. Lymphatic and skin complications were noted in 8.6 and 4.8% of patients, respectively. Histopathological analysis revealed lymph node involvement in 26.7% of patients with non-palpable nodes. Inguinal recurrence was observed in 2.8% of patients. 10y- overall survival was 74.2% and 10-y cancer specific survival was 84.8%. CSS for pN0, pN1, pN2 and pN3 were 100%, 82.4%, 72.7% and 9.1%, respectively. Conclusion: VEIL seems to offer appropriate long term oncological control with minimal morbidity. In the absence of non-invasive stratification measures such as dynamic sentinel node biopsy, VEIL emerged as the alternative for the management of non-bulky lymph nodes in penile cancer.

https://doi.org/10.1590/s1677-5538.ibju.2023.0065

Agro-bioeconomic feasibility of immature cowpea and beet cultivar combinations in a semi-arid environment
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Bezerra Neto, Francisco

; Ribeiro, Jeisy R. de S.

; Lima, Jailma S. S. de

; Santos, Elizângela C. dos

; Guerra, Natan M.

; Nunes, Renato L. C.

Revista Caatinga

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Mar 2023, Volume 36 Nº 1 Páginas 70 - 79

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

ABSTRACT The objective of this work was to evaluate the agro-bioeconomic feasibility of immature cowpea and beet cultivar combinations in intercropping systems in a semi-arid environment. Experiments were carried out in two cropping years using a randomized block design with four replicates. The treatments consisted of four cowpea cultivars (‘BRS Tumucumaque,’ ‘BRS Cauamé,’ ‘BRS Guariba,’ and ‘BRS Itaim’) and two beet cultivars (‘Early Wonder’ and ‘Fortuna’). In each block of the experiments, plots in monocropping of the cultivars were sown as additional treatments to obtain the following agronomic and competition indexes and economic indicators: land equivalent ratio (LER), area time equivalent ratio (ATER), land use efficiency (LUE), beet equivalent production (BEP), competitive ratio (CR), crop aggressivity (A), gross income (GI), net income (NI), rate of return (RR), and corrected monetary advantage (CMA). The highest agro-bioeconomic efficiency of the tested intercropping systems was achieved in the combination of cowpea cultivar BRS Guariba and beet cultivar Fortuna. Beet behaved as the dominant crop, and cowpea as the dominated crop in all evaluated intercropping systems. The indexes and indicators demonstrated the complementarity and sustainability of the combination of cowpea cultivar BRS Guariba with beet cultivar Fortuna.

RESUMO O objetivo deste trabalho foi avaliar a viabilidade agrobioeconômica de combinações de cultivares de feijão-caupi imaturo e de beterraba em sistemas consorciados em ambiente semiárido. Os experimentos foram conduzidos em dois anos agrícolas, em delineamento de blocos casualizados com quatro repetições. Os tratamentos consistiram da combinação de quatro cultivares de feijão-caupi (‘BRS Tumucumaque,’ ‘BRS Cauamé,’ ‘BRS Guariba’ e ‘BRS Itaim’) e duas cultivares de beterraba (‘Early Wonder’ e ‘Fortuna’). Em cada bloco dos experimentos, parcelas em monocultivo das cultivares foram semeadas como tratamentos adicionais para obtenção dos seguintes índices agronômicos e de competição e indicadores econômicos: razão equivalente de terra (RET), razão equivalente de área no tempo (REAT), eficiência de uso da terra (EUT), produção equivalente de beterraba (PEB), razão competitiva (RC), indice de superação das culturas (ISC), renda bruta (RB), renda líquida (RL), taxa de retorno (TR) e vantagem monetária corrigida (VMC). A mais alta eficiência agrobioeconômica dos sistemas consorciados testados foi alcançada na combinação da cultivar de feijão-caupi BRS Guariba com a cultivar de beterraba Fortuna. A beterraba se comportou como a cultura dominante e o feijão-caupi como a cultura dominada em todos os consórcios avaliados. Os índices e indicadores determinados demonstraram a complementaridade e sustentabilidade da combinação da cultivar de feijão-caupi BRS Guariba com a cultivar de beterraba Fortuna.

https://doi.org/10.1590/1983-21252023v36n108rc

COMPARANDO A EFICIÊNCIA ANALÍTICA DAS TÉCNICAS FTIR, UV-VIS, CLAE-DAD E ESI(+)MS NO ESTUDO DE CORANTES ALIMENTARES
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Lyrio, Marcos V. V.

; Debona, Danieli G.

; Conceição, Nathália dos S.

; Gomes, Francisco M.

; Pereira, Alan R.

; Frizzera, Henrique A.

; Reis, Jessica L.

; Grecco, Taila T.

; Pires, Bruna C.

; Lacerda Jr., Valdemar

; Castro, Eustaquio V. R.

; Isidoro, Marsele M.

; Filgueiras, Paulo R.

; Romão, Wanderson

Química Nova

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2023, Volume 46 Nº 5 Páginas 435 - 449

Resumo: Pt | Texto: Pt | PDF: Pt

Food additives are chemical substances added to improve organoleptic characteristics, in this context, there are several synthetic dyes, such as sunset yellow, tartrazine, erioglaucine, allura red, indigo carmine, and new coccine, that can also be identified through different analytical techniques such as infrared spectroscopy, UV-Vis spectrophotometry, high performance liquid chromatography with diode array detector and mass spectrometry. Therefore, the objective of this work was to compare methods developed for different analytical techniques, in order to identify the one that presents greater efficiency in certain applications. For this, the patterns of the dyes were analyzed, as well as their mixtures and foods that had them. As a result, the CLAE-DAD presents excellent selectivity and linearity of the calibration curves, but it presents higher LD and LQ values when compared to the UV-Vis, in turn the infrared provides information regarding functional groups and bonds. Mass spectrometry showed great capabilities in identifying the molecular formula and better selectivity in the absence of the erioglaucine dye. It is not feasible to indicate the best or worst analytical approach, but it is possible to point out which one is more suitable for each application. Regarding the quantification capacity, chromatography and UV-Vis are good alternatives, but in mixtures containing more than one dye, CLAE-DAD is more suitable due to the better selectivity. Regarding the identification capacity, mass spectrometry, especially FT-ICR MS, is the most appropriate technique to propose molecular formulas due to its high resolution and mass accuracy. The advantage of FTIR was the easier sample preparation, being able to analyze the dyes in the solid state.

https://doi.org/10.21577/0100-4042.20230037

Agro-economic optimization of radish cultivation fertilized with doses of roostertree in a semi-arid environment
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Silva, Jéssica P. P. da

; Bezerra Neto, Francisco

; Lima, Jailma S. S. de

; Ferreira, Rayanna C.

; Freitas, Isaac A. da S.

; Guerra, Natan M.

Revista Caatinga

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2023, Volume 36 Nº 4 Páginas 802 - 813

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

ABSTRACT The use of spontaneous species from the Caatinga biome as green manure is a promising practice in increasing the productivity of agricultural systems and sustainable exploitation of the environment. This study aimed to estimate the maximum physical and economic efficiencies of radish agroeconomic characteristics in monocropping as a function of roostertree (Calotropis procera (Ait.) R. Br) biomass amounts in two cropping seasons in a semi-arid environment. The experimental design was randomized complete blocks with five treatments and five replications. The treatments consisted of different roostertree biomass amounts: 16, 29, 42, 55, and 68 t ha-1 on a dry basis, incorporated into the soil. In each block, two additional treatments were added, one without fertilization (control) and the other with mineral fertilizer, for comparison purposes with the maximum efficiency treatment. The radish cultivar planted was ‘Crimson Gigante’. The fertilization of the radish to obtain the maximum optimized productive efficiency (9.56 t ha-1) was possible with the incorporation of 50.86 t ha-1 of C. procera dry biomass into the soil. The maximum optimized agroeconomic efficiency (based on a net income of 37,641.08 R$ ha-1) of radish cultivation was obtained with 44.39 t ha-1 of C. procera dry biomass added to the soil. The rate of return and the profit margin obtained were 2.94 R$ for each real invested, with a profit margin of 62.55%. The use of biomass from the C. procera green manure is a viable technology for producers who practice radish monoculture in a semi-arid environment.

RESUMO O uso de espécies espontâneas do bioma Caatinga como adubo verde é uma prática promissora no aumento da produtividade dos sistemas agrícolas e na exploração sustentável do meio ambiente. Este trabalho teve como objetivo estimar as máximas eficiências físicas e econômicas das características agroeconômicas do rabanete em monocultivo, em função de quantidades de biomassa de flor-deseda em duas estações de cultivos em ambiente semiárido. O delineamento experimental utilizado foi em blocos casualizados com cinco tratamentos e cinco repetições. Os tratamentos consistiram de diferentes quantidades de biomassa de flor-de-seda: 16, 29, 42, 55 e 68 t ha-1 em base seca, incorporadas ao solo. Em cada bloco dos experimentos foram adicionados dois tratamentos, um sem adubação (tratamento testemunha) e outro com adubo mineral, para fins de comparação com o tratamento de máxima eficiência. A cultivar de rabanete plantada foi a Crimson Gigante. A adubação do rabanete para obtenção da máxima eficiência produtiva otimizada (9,56 t ha-1) foi possível com a incorporação de 50,86 t ha-1 de biomassa seca de C. procera ao solo. A máxima eficiência agroeconômica otimizada (baseada na renda líquida de 37.641,08 R$ ha-1) foi obtida com a quantidade de 44,39 t ha-1 de biomassa seca de C. procera adicionada ao solo. A taxa de retorno e a margem de lucro obtida foram de R$ 2,94 para cada real investido com margem de lucro de 62,55%. A utilização da biomassa do adubo verde, C. procera, é uma tecnologia viável para produtores que praticam o monocultivo de rabanete em ambiente semiárido.

https://doi.org/10.1590/1983-21252023v36n408rc

Biologically Active Volatile Organic Compounds (VOCs) Produced by Rhizospheric Actinobacteria Strains Inhibit the Growth of the Phytopathogen Colletotrichum musae
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Brito, Maria V. de

; Fonseca, Wéverson L.

; Mafezoli, Jair

; Barbosa, Francisco G.

; Nunes, Fátima M.

; Mattos, Marcos C. de

; Santos, João E. A. dos

; Araujo, Francisca S. A.

; Vieira, Regimara F. B. S.

; Magalhães, Hilton C. R.

; Muniz, Celli R.

; Garruti, Deborah S.

; Ootani, Marcio A.

; Souza Netto, José M.

; Pinto, Licarion

; Viana, Francisco M. P.

; Oliveira, Maria C. F.

Journal of the Brazilian Chemical Society

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Out 2022, Volume 33 Nº 10 Páginas 1172 - 1189

Resumo: En | Texto: En | PDF: En

The antifungal potential of volatile organic compounds (VOCs) produced by actinobacterial strains Streptomyces sp. (ACTB-77) and Amycolatopsis sp. (ACTB-290) from the rhizosphere of Caatinga plants against Colletotrichum musae was investigated. VOCs produced by these microorganisms (axenic and co-culture) were investigated using headspace-solid phase micro-extraction (HS-SPME) and gas chromatography-mass spectrometry (GC-MS). Although no exclusive VOC peaks were observed in the co-culture with ACTB-77, the same experiment involving ACTB-290 yielded five new peaks, including two identified alcohols, suggested as bioreductive products of the corresponding ketones by the fungus. Statistical analysis revealed that co-culture ACTB-77/C. musae has a closer similarity to the fungus than to the actinobacteria, while the co culture ACTB-290/C. musae showed closer similarity to the actinobacteria. These confirmed the more pronounced antifungal activity of the ACTB-290 strain, as observed in the fungus growth inhibition experiments. The antifungal activity of ACTB-290 was associated to its sulfur-containing metabolites, while linalool was suggested as responsible for the ACTB-77 activity.

https://doi.org/10.21577/0103-5053.20220037

Selection of cotton genotypes for yield and fiber quality under water stress
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Gomes, Itallo H. R. A.

; Cavalcanti, José J. V.

; Farias, Francisco J. C.

; Paixão, Francisco J. R. da

; Silva Filho, João L. da

; Suassuna, Nelson D.

Revista Brasileira de Engenharia Agrícola e Ambiental

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Ago 2022, Volume 26 Nº 8 Páginas 610 - 617

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

RESUMO O objetivo deste estudo foi selecionar linhagens de algodoeiro tolerantes ao estresse hídrico, com base em caracteres de produtividade e qualidade de fibra. O experimento foi conduzido em dois experimentos de campo em Quixeramobim - CE sem suplementação hídrica, nos anos: 2018 e 2019. Foram avaliados nove genótipos de algodoeiro, sendo seis linhagens e três cultivares comerciais. Foram mensuradas variáveis relacionadas com produtividade de algodão em pluma e qualidade intrínseca de fibra. Os dados foram submetidos à análise de variância individual e conjunta, e a seleção pelo índice de seleção. A variabilidade genética encontrada entre os materiais demonstra a possibilidade de ganhos significativos no processo de seleção do algodoeiro. Os genótipos CNPA 2013 - 2235 RF FL, CNPA 2013 - 2064 RF FL e CNPA 2012 - 160 RF FL e a cultivar FM 944 GL tiveram maior produção e melhor qualidade de fibra em condições de sequeiro.

ABSTRACT The objective of this work was to select a cotton line tolerant to water stress, based on yield and fiber quality characteristics. A total of nine cotton genotypes were evaluated (six breeding lines and three commercial cultivars) in two field experiments conducted in Quixeramobim - CE without water supplementation in 2018 and 2019, respectively. Traits related to cotton lint yield and intrinsic fiber quality were measured. Data were submitted to individual and joint analysis of variance, and selection by the selection index. The genetic variability among the materials demonstrates the possibility of significant gains in the cotton selection process. The genotypes CNPA 2013 - 2235 RF FL, CNPA 2013 - 2064 RF FL and CNPA 2012 - 160 RF FL, as well as the cultivar FM 944 GL, had higher production and better fiber quality under rainfed conditions.

https://doi.org/10.1590/1807-1929/agriambi.v26n8p610-617

Germination and in vitro development of mature zygotic embryos and protein profile of seedlings of wild and cultivated Hevea brasiliensis
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CARVALHO, JOSIANE C. DE

; NASCIMENTO, GLEISSON DE O.

; SILVA, ANA CLAUDIA L. DA

; FERREIRA, MARIA DAS GRACAS R.

; ARAÚJO, WAGNER L.

; GONÇALVES, JOSÉ FRANCISCO DE C.

Anais da Academia Brasileira de Ciências

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2022, Volume 94 Nº 4 elocation e20200515

Resumo: En | Texto: En | PDF: En

Abstract The main factors governing Hevea brasiliensis germination and seedling establishment remains unclear. We examined the effect of growth regulators Indole 3-Acetic Acid (IAA) and 6-Benzylaminopurine (BAP), and their interactions on germination and the development of mature zygotic embryos (MZE) and protein profile of Hevea brasiliensis seedlings from wild and cultivated (clone PB 250) genotypes. Embryonic axes excised from seeds (wild and clone PB 250) were inoculated in Murashige and Skoog medium (control) and supplemented with IAA (3 µM) and BAP (6 µM) individually and their combination (3 µM IAA + 6 µM BAP). For both genotypes, the mature embryos displayed a high percentage of germination and establishment, and the seedlings were characterized by protein bands ranging from 7 to 30 kDa. Notably, the wild genotype showed proteins in the 14 kDa range, which may be associated with one of the major rubber elongation factors (REF). The wild and clone genotypes presented different behavior and strategies in relation to the protein profile in the presence of different growth regulators. Although the latex biosynthetic pathway and its mechanisms of regulation still remain largely unknown, our results aid in our understanding of the dynamics of proteins in different rubber tree clones in vitro.

https://doi.org/10.1590/0001-3765202220200515

Spondias purpurea L. Stem Bark Extract: Antioxidant and in vitro Photoprotective Activities
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Rodrigues, Francisco Alessandro M.

; Giffony, Priscylla S.

; Santos, Sarah B. F. dos

; Guedes, Jhonyson A. C.

; Ribeiro, Maria Elenir N. P.

; Araújo, Tamara G. de

; Silva, Larissa M. R. da

; Zocolo, Guilherme J.

; Ricardo, Nágila M. P. S.

Journal of the Brazilian Chemical Society

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Out 2021, Volume 32 Nº 10 Páginas 1918 - 1930

Resumo: En | Texto: En | PDF: En

Plant phenolic extracts are widely recognized as an important source of natural antioxidant substances and potential compounds for cosmetic formulations. This study aimed to evaluate the chemical profile, photoprotective and antioxidant activities of stem bark extract of Spondias purpurea L. (ciriguela) and its application in photoprotective formulations. Thirty phenolic constituents were annotated by ultra-performance liquid chromatography coupled with an electrospray ionization quadrupole time-of-flight mass spectrometry in mode negative (UPLC-QTOF-MS2). The stem bark extract antioxidant and chelation potential, expressed in half maximal inhibitory concentration (IC50), showed 6.25 and 352.22 µg mL−1, respectively. The phenolic extract was used as an active ingredient in six sunscreen formulations, with concentrations ranging from 0.2 to 10%. The ultraviolet (UV) protection properties of the formulations were evaluated by sun protection factor (SPF) values obtained in 0.2 mg mL−1 (0.495 to 2.27) and 2.0 mg mL−1 (2.29 to 15.87). The SPF value for the extract (14.37 and 26.16) was high, but there was a reduction in the base formulation. However, these results suggested that the bioactive extracted of stem bark of Spondias purpurea L. has interesting potential to reduce the damage caused by UV radiation and may be utilized as an active ingredient in a sunscreen formulation.

https://doi.org/10.21577/0103-5053.20210082 46 downloads

Guía basada en la evidencia. Diagnóstico y manejo del síndrome de Guillain-Barré en diez pasos
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Leonhard, Sonja E.

; Mandarakas, Melissa R.

; De Assis Aquino Gondim, Francisco

; Bateman, Kathleen

; Brito Ferreira, Maria L.

; Cornblath, David R.

; Van Doorn, Pieter A.

; Dourado, Mario E.

; Hughes, Richard A.C.

; Islam, Badrul

; Kusunoki, Susumu

; Pardo, Carlos A.

; Reisin, Ricardo

; Sejvar, James J.

; Shahrizaila, Nortina

; Soares, Cristiane

; Umapathi, Thirugnanam

; Wang, Yuzhong

; Yiu, Eppie M.

; Willison, Hugh J.

; Jacobs, Bart C.

Medicina (Buenos Aires)

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Out 2021, Volume 81 Nº 5 Páginas 817 - 836

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

Abstract Guillain-Barré syndrome (GBS) is a rare, but potentially fatal, immune-mediated disease of the peripheral nerves and nerve roots that is usually triggered by infections. The incidence of GBS can therefore increase during outbreaks of infectious diseases, as was seen during the Zika virus epidemics in 2013 in French Polynesia and in 2015 in Latin America. Diagnosis and management of GBS can be complicated as its clinical presentation and disease course are heterogeneous, and no international clinical guidelines are currently available. To support clinicians, especially in the context of an outbreak, we have developed a globally applicable guideline for the diagnosis and management of GBS. The guideline is based on current literature and expert consensus, and has a ten-step structure to facilitate its use in clinical practice. We first provide an introduction to the diag nostic criteria, clinical variants and differential diagnoses of GBS. The ten steps then cover early recognition and diagnosis of GBS, admission to the intensive care unit, treatment indication and selection, monitoring and treatment of disease progression, prediction of clinical course and outcome, and management of complications and sequelae.

Resumen El síndrome de Guillain-Barré (SGB) es una enfermedad inmunológica del nervio periférico y las raíces nerviosas, poco frecuente, potencialmente mortal y que suele desencadenarse por infecciones. La incidencia del SGB puede aumentar durante el brote de enfermedades infecciosas, tal como se observó en las epidemias del virus Zika en la Polinesia Francesa en 2013 y en América Latina en 2015. El diagnóstico y el manejo clínico del SGB pueden ser complicados ya que su presentación y el curso de la enfermedad son heterogéneos, y actualmente no se cuenta con guías clínicas internacionales. Para respaldar a los médicos, especialmente en el contexto de un brote de una enfermedad infecciosa, hemos desarrollado una guía clínica aplicable en todo el mundo para el diagnóstico y el tratamiento del SGB. La guía se basa en literatura actualizada y el consenso de expertos, y tiene una estructura de diez pasos para facilitar su uso en la práctica clínica. Inicialmente, brindamos una introducción a los criterios de diagnóstico, variantes clínicas y diagnósticos diferenciales del SGB. Los diez pasos luego abordan el reconocimiento y el diagnóstico temprano del SGB, la admisión a la unidad de cuidados intensivos, indicación y selección de tratamiento, seguimiento y tratamiento de la progresión de la enfermedad, predicción del curso clínico, resultados y tratamiento de complicaciones y secuelas.

1972 downloads

10.

Atualização da Diretriz Brasileira de Hipercolesterolemia Familiar – 2021
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Izar, Maria Cristina de Oliveira

; Giraldez, Viviane Zorzanelli Rocha

; Bertolami, Adriana

; Santos Filho, Raul Dias dos

; Lottenberg, Ana Maria

; Assad, Marcelo Heitor Vieira

; Saraiva, José Francisco Kerr

; Chacra, Ana Paula M.

; Martinez, Tania L. R.

; Bahia, Luciana Ribeiro

; Fonseca, Francisco Antonio Helfenstein

; Faludi, Andre Arpad

; Sposito, Andrei C.

; Chagas, Antônio Carlos Palandri

; Jannes, Cinthia Elim

; Amaral, Cristiane Kovacs

; Araújo, Daniel Branco de

; Cintra, Dennys Esper

; Coutinho, Elaine dos Reis

; Cesena, Fernando

; Xavier, Hermes Toros

; Mota, Isabela Cardoso Pimentel

; Giuliano, Isabela de Carlos Back

; Faria Neto, José Rocha

; Kato, Juliana Tieko

; Bertolami, Marcelo Chiara

; Miname, Marcio Hiroshi

; Castelo, Maria Helane Costa Gurgel

; Lavrador, Maria Sílvia Ferrari

; Machado, Roberta Marcondes

; Souza, Patrícia Guedes de

; Alves, Renato Jorge

; Machado, Valeria Arruda

; Salgado Filho, Wilson

Arquivos Brasileiros de Cardiologia

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Out 2021, Volume 117 Nº 4 Páginas 782 - 844

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

https://doi.org/10.36660/abc.20210788 231 downloads

11.

Soursop production under supplementary irrigation and mulching in the semiarid region of Brazil
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Cavalcante, Lourival F.

; Silva-Matos, Raíssa R. S.

; Souto, Antônio G. de L.

; Lima Neto, Antonio J. de

; Nunes, Járisson C.

; Mesquita, Francisco de O.

Revista Brasileira de Engenharia Agrícola e Ambiental

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Ago 2021, Volume 25 Nº 8 Páginas 522 - 528

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

RESUMO A irregularidade das chuvas na região semiárida do Brasil e do mundo exerce ação limitante na produção agrícola, em geral, inclusive das espécies frutíferas. Nessas condições, a irrigação é o insumo que mantém o sistema produtivo com viabilidade econômica e social. O estudo foi desenvolvido no período de 2012 a 2014, no município de Remígio, Estado da Paraíba, Brasil, com o objetivo de avaliar a produção de gravioleira ‘Morada’ cultivada em condições de sequeiro e irrigada, no solo sem e com cobertura morta em duas safras. Os tratamentos foram distribuídos em blocos casualizados com três repetições, em arranjo fatorial 2 × 3 × 2, relativos às plantas não irrigadas (lâmina de 0 mm) e irrigadas semanalmente (lâmina de 17,2 mm) no solo sem cobertura, com cobertura a partir de restos de culturas e com bagaço de sisal nas safras agrícolas de 2012/2013 e 2013/2014. No solo sem cobertura a irrigação elevou a produtividade de 5,3 para 34,7 t ha-1 na primeira safra e de 9,4 para 57,7 t ha-1 na segunda safra. O uso conjunto da irrigação e a cobertura com resíduo de sisal proporcionou as maiores produtividades. O uso do resíduo de sisal como cobertura morta aumentou o número e a massa média de frutos, a produção por planta e a produtividade da gravioleira ‘Morada’ em relação ao solo sem cobertura e coberto por resíduos culturais.

ABSTRACT Irregular rainfall in the semiarid region of Brazil and in the world exerts a limiting action on agricultural production, in general, including fruit species. Under these conditions, irrigation is the input that keeps the production system both economically and socially viable. This study was carried out from 2012 to 2014, in the municipality of Remígio, Paraíba State, Brazil, aiming at evaluating the production of ‘Morada’ soursop cultivated under rainfed and irrigated conditions, in soil with and without mulch, in two harvests. The treatments were distributed in randomized block design with three replicates in a 2 × 3 × 2 factorial scheme, corresponding to non-irrigated plants (0 mm water depth) and plants irrigated weekly (17.2 mm water depth) in soil without mulching, with cover crop residues, and with a sisal bagasse mulch in the 2012/2013 and 2013/2014 crop years. In the soil without mulching, irrigation increased yield from 5.3 to 34.7 t ha-1 in the first harvest and from 9.4 to 57.7 t ha-1 in the second harvest. The association between irrigation and mulch with sisal residue promoted the highest yield. The use of mulch of sisal residue increased the number and mean mass of fruits, production per plant and yield of ‘Morada’ soursop compared to the soil without mulch and covered by crop residues.

https://doi.org/10.1590/1807-1929/agriambi.v25n8p522-528 400 downloads

12.

Anti-Inflammatory Meroterpenoids of Cordia glazioviana (Boraginaceae)
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Silva, Ana Karine O.

; Pinto, Francisco C. L.

; Canuto, Kirley M.

; Braz-Filho, Raimundo

; Silva, Rose Anny C.

; Santos, Flávia A.

; Monteiro, Norberto K. V.

; Silveira, Edilberto R.

; Pessoa, Otília D. L.

Journal of the Brazilian Chemical Society

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Jul 2021, Volume 32 Nº 7 Páginas 1424 - 1434

Resumo: En | Texto: En | PDF: En

The phytochemical reinvestigation from the heartwood of the extracts of Cordia glazioviana led to the isolation of four still undescribed hydroquinones derivatives designated as cordiaquinol D (1), cordiaquinol E (2), (10R)-10,11-dihydrofuran-1,4-dihydroxy-globiferin (3) and 2-[(1’E,6’E)-3’,8’- dihydroxy-3’,7’-dimethylocta-1’,6’-dienyl]-benzene-1,4-diol (4), along with the naphthoquinone 6-[(2’R)-2’-hydroxy-3’,6’-dihydro-2H-pyran-5’-yl]-2-methoxy-7-methylnaphthalene-1,4-dione (5). Additionally, six previously known compounds were also isolated: rel-1,4-dihydroxy-8(,11(;9(,11(-diepoxy-2-methoxy-8a(-methyl-5,6,7,8,8a,9,10,10a-octahydro-10-antracenone (6), didehydroconicol (7), 1(,6(-dihydroxy-7-epi-eudesm-3-ene (8), 1(,6(-dihydroxy-7-epi-eudesm-4(15)-ene (9), 10,11-dihydroxybisabolol (10), and hamanasal-A (11). The structures of the new compounds were assigned by high-resolution mass spectrometry (HRMS) and nuclear magnetic resonance (NMR) analyses. The relative stereochemistry of 3, 4, and 5 was improved by quantum mechanical calculations. Eight, out of the eleven isolated compounds (2-9), were tested through cellular viability and lipopolysaccharide (LPS)-induced inflammation assays against RAW 264.7 macrophage-like cells. Compounds 3-5 exhibited a stronger effect on LPS-induced NO production (half-maximal inhibitory concentration (IC50) 50.34, 105.83, and 66.73 µM, respectively).

https://doi.org/10.21577/0103-5053.20210041 58 downloads

13.

A proposal for static load tests on piles: the Equilibrium Method
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Lopes, Francisco R.

; Maria, Paulo Eduardo L. Santa

; Danziger, Fernando A. B.

; Martins, Ian S. M.

; Danziger, Bernadete R.

; Tassi, Michel C.

Soils and Rocks

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2021, Volume 44 Nº 1 elocation e2021057920

Resumo: En | Texto: En | PDF: En

Abstract This note presents an alternative method for static load tests on piles (and caissons). Called Equilibrium Method by its first proponents, the method was applied in some load tests in Brazil, in addition to being the object of theoretical studies conducted at the Federal University of Rio de Janeiro. The method consists, in each step, to keep the load constant for a period of time and then let it relax (not pumping the jack) until the displacement and the load reach mutual equilibrium. The stabilized displacement and the relaxed load (the so-called load and displacement in equilibrium) are considered for the load-displacement curve. The method has the advantage of producing the load-displacement curve close to that of a slow, stabilized test (incremental slow maintained load test), but with a shorter total execution time. The paper includes a short theoretical background and a review of the Brazilian experience.

https://doi.org/10.28927/sr.2021.057920 130 downloads

14.

Phenotypic adaptability and stability of herbaceous cotton genotypes in the Semiarid region of the Northeast of Brazil
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Silva, Ruan dos S.

; Farias, Francisco J. C.

; Teodoro, Paulo E.

; Cavalcanti, José J. V.

; Carvalho, Luiz P. de

; Queiroz, Damião R.

Revista Brasileira de Engenharia Agrícola e Ambiental

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Dez 2020, Volume 24 Nº 12 Páginas 800 - 805

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

RESUMO A cultura do algodoeiro (Gossypium hirsutum L.) na região do Nordeste brasileiro é submetida a alta variabilidade edafoclimática, o que contribui para a ocorrência de forte interação genótipo versus ambiente (G x A). Nessa situação, faz-se necessário o uso de metodologias de adaptabilidade e estabilidade para o estudo da interação G x A antes da seleção e recomendação de cultivares. Dentre estas, a análise genótipo + G x E (GGE) biplot se destaca como uma das mais recomendadas e usadas atualmente. O objetivo deste estudo foi avaliar a interação genótipo versus ambiente (G × A) de linhagens finais de algodoeiro por meio da metodologia GGE biplot, visando identificar genótipos adaptados e estáveis para as condições do semiárido nordestino. Foram conduzidos quatro ensaios de valor de cultivo e uso nas cidades de Apodi, RN, e Barbalha, CE, Brasil, nos anos de 2016 e 2017. O delineamento experimental foi de blocos casualizados, com 17 tratamentos e quatro repetições. Os tratamentos foram constituídos de 17 genótipos de algodoeiro. As variáveis avaliadas foram: produtividade de algodão em caroço e produtividade de fibra. A análise identificou as linhagens CNPA BA 2011-4436, CNPA BA 2011-1197 e CNPA BA 2010-1174 como estáveis e com ampla adaptabilidade para a região avaliada.

ABSTRACT Cotton (Gossypium hirsutum L.) crop areas in the Northeast region of Brazil present high edaphoclimatic variability, which contributes to a strong genotype versus environment interaction (G × E). This situation requires the use of adaptability and stability methodologies to study G × E interaction before the selection and recommendation of cultivars. Among these methodologies, the genotype + G × E (GGE) biplot analysis has been currently used and highly recommended. Thus, the objective of this study was to evaluate the G × E of cotton genotypes through GGE biplot analysis, focusing on the identification of adapted and stable genotypes for the Semiarid region of the Northeast of Brazil. Four crop value and use tests were conducted in the municipalities of Apodi, state of Rio Grande do Norte, and Barbalha, state of Ceará, Brazil, in 2016 and 2017. A randomized block experimental design, with 17 treatments and four repetitions, was used. The treatments consisted of 17 cotton genotypes. The variables evaluated were: cotton seed and fiber yields. According to the analysis, the genotypes CNPA BA 2011-4436, CNPA BA 2011-1197, and CNPA BA 2010-1174 were stable and presented high adaptability to the evaluated region.

https://doi.org/10.1590/1807-1929/agriambi.v24n12p800-805 419 downloads

15.

Modelos de agricultura sustentável: biodinâmica e sistema silvipastoril
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Mascarenhas¹, Nágela M. H.

; Furtado¹, Dermeval A.

; Cavalcante¹, Cácio R.

; Costa², Antonio N. L. da

; Souza², Maria A. de

; Gonçalves¹, Mailson G.

; Oliveira¹, Airton G. de

; Brito¹, Alicia N. dos S. L. de

; Silva¹, Luís P. F. R. da

; Nogueira¹, Lídia P. da S.

; Dornelas¹, Karoline C.

; Rodrigues¹, Raimundo C. M.

; Neto¹, Moises S. de Medeiros

; Paiva¹, Francisco J. da S.

; Silva¹, Semirames do N.

Revista de Ciências Agrárias

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Set 2020, Volume 43 Nº 3 Páginas 228 - 245

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

RESUMO O objetivo desta revisão foi comparar dois modelos de agricultura sustentáveis, demostrando as vantagens e desvantagens de ambos, correlacionando-os entre si. As diversas práticas agrícolas contemporâneas compreendem modelos alternativos de agricultura, como permacultura, agricultura biológica, orgânica, biodinâmica, que são consideradas sustentáveis, e modelos intensivos de produção, que apresentam vários pontos negativos, contrastando com os modelos alternativos. A busca por uma agricultura menos agressiva ao meio ambiente, que permaneça produtiva em longo prazo, tem sido uma preocupação constante de pesquisadores e produtores. Os modelos de agricultura assemelham-se entre si, o que os difere são apenas algumas práticas que não são permitidas em todos, e suas bases de fundamentação. Nesta revisão dois modelos foram mais abordados de forma simplificada, para a percepção dos seus conceitos e de suas bases fundamentais, mostrando o que os diferencia, e que mesmo assim os leva para um mesmo objetivo, criar um ecossistema independente de recursos externos.

ABSTRACT The objective of this review was to compare two models of sustainable agriculture, demonstrating their advantages and disadvantages and correlating them with each other. The diverse contemporary agricultural practices comprise from alternative models of agriculture, such as permaculture, organic farming, organic, biodynamic, that are considered sustainable, and intensive production models, that present several negative points, contrasting with alternative models. The search for a less aggressive agriculture to the environment, what stay productive in the long run, it has been a constant concern of researchers and producers. Agricultural models are similar to each other, what differs are some practices that do not are allowed in all, and its foundation bases. In this review, two models were more approached in a simplified way, to the perception of their concepts and fundamental bases, showing what differentiates them, and that still leads to the same goal, creating an ecosystem independent of external resources.

https://doi.org/10.19084/rca.20853 46 downloads

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