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Publicações - ciências agrárias

CHARACTERIZATION OF TRANSVERSE CYLINDRICAL CAVITIES IN WOODEN BLOCKS OF THE SPECIES Cedrela odorata USING NON-DESTRUCTIVE ULTRASOUND TESTS Luis Shuseki Yoza; Erik Baradit Allende; Oscar Tang Cruz; Jorge Luis Monteiro de Matos; Márcio Pereira da Rocha; Ivan Venson FLORESTA (ONLINE) (CURITIBA), v. 51, n. 4, p. 848-854, 2021 DOI Home page Palavra-chave: Non-destructive techniques; ultrasound; wood deterioration Áreas do conhecimento: CIENCIAS_AGRARIAS; Tecnologia e Utilização de Produtos Florestais; Biodeterioração da madeira; CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Tecnologia e Utilização de Produtos Florestais; Preservação do patrimônio histórico resumo ... (es) The main objective of the present work was to characterize the transverse cylindrical cavities of Cedrela odorata wood blocks using the non-destructive ultrasound techniques (NDT). The dispersions of acoustic wave propagation velocity (AWV) were measured and, considering the anisotropic structure of the wood, the Hankinson model was used for modeling with 2D graphics. The results showed strong dispersion in the frontal direction depending on the diameter of the cavities, in addition to good linear relationships between them for the cavity axis. Therefore, the results support the use of NDT ultrasound techniques to assess deteriorated structural elements such as historical monuments.
CHARACTERIZATION OF TRANSVERSE CYLINDRICAL CAVITIES INWOODENBLOCKS OF THE SPECIES Cedrela odorataUSING NON-DESTRUCTIVEULTRASOUND TESTS YOZA, LUIS SHUSEKI; Erik Baradit Allende; Oscar Tang Cruz; JORGE LUIS MONTEIRO DE MATOS; Márcio Pereira da Rocha; Ivan Venson FLORESTA (ONLINE) (CURITIBA), v. 51, n. 4, p. 848-854, 2021 DOI Home page Palavra-chave: Non-Destructive Techniques for Wood; ultrasound; wood deterioration Áreas do conhecimento: CIENCIAS_AGRARIAS; Tecnologia de Alimentos; CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Tecnologia e Utilização de Produtos Florestais; Relações Água-Madeira e Secagem; CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Tecnologia e Utilização de Produtos Florestais; Avaliação Não Destrutiva das Propriedades da Madeira e Produtos de Madeira resumo ... (es) The main objective of the present work was to characterize the transverse cylindrical cavities of Cedrela odorata wood blocks using the non-destructive ultrasound techniques (NDT). The dispersions of acoustic wave propagation velocity (AWV) were measured and, considering the anisotropic structure of the wood, the Hankinson model was used for modeling with 2D graphics. The results showed strong dispersion in the frontal direction depending on the diameter of the cavities, in addition to good linear relationships between them for the cavity axis. Therefore, the results support the use of NDT ultrasound techniques to assess deteriorated structural elements such as historical monuments.
Characterization of wood popularly known as ?Louros? in the Brazilian amazon by visible spectroscopy and CIELAB parameters Joielan Xipaia dos Santos; Helena Cristina Vieira; SOUZA, DEIVISON VENICIO; Paulo Afonso B Costa; GRACIELA INES BOLZON DE MUÑIZ; Patricia Soffiatti; Silvana Nisgoski Forest Systems, v. 30, n. 2, p. 1-7, 2021 Palavra-chave: Colorimetria; discriminação de madeiras resumo ...
Chemical characterization and in vitro anthelmintic activity of Citrus bergamia Risso and Citrus X paradisii Macfad essential oil against Haemonchus contortus Kirby isolate GARBIN, VIVIEN PATRÍCIA; MUNGUÍA, BEATRIZ; SALDAÑA, JENNY CAROLINA; Cícero Deschamps; CIPRIANO, ROGER RAUPP; MOLENTO, MARCELO BELTRÃO ACTA TROPICA, v. 217, p. 105869 2021 DOI Palavra-chave: Citrus bergamia Risso; Citrus X paradisii; Haemonchus contortus Kirby; essential oil Áreas do conhecimento: CIENCIAS_AGRARIAS; Tecnologia de Alimentos resumo ...
Chemical Composition and Antioxidant Activity of Essential Oils from Populations of Baccharis dracunculifolia DC. in Southern Brazil TOMAZZOLI, MAÍRA MACIEL; Wanderlei do Amaral; CIPRIANO, ROGER RAUPP; TOMASI, JÉSSICA DE CÁSSIA; GOMES, ERIK NUNES; FERRIANI, AUREA PORTES; MAIA, BEATRIZ H. L. DE NORONHA SALES; Cícero Deschamps BRAZILIAN ARCHIVES OF BIOLOGY AND TECHNOLOGY (ONLINE), v. 64, p. e21190253 2021 DOI Palavra-chave: Baccharis; atividade antioxidante Áreas do conhecimento: CIENCIAS_AGRARIAS; Tecnologia de Alimentos resumo ... HIGHLIGHTS Essential oils from populations of B. dracunculifolia were investigated. β-pinene and...
Chemical variability of essential oils of Eugenia uniflora L. genotypes and their antioxidant activity. CIPRIANO, ROGER R.; MAIA, BEATRIZ H.L.N.S.; Cícero Deschamps ANAIS DA ACADEMIA BRASILEIRA DE CIÊNCIAS, v. 93, n. 1, p. 1 2021 DOI Palavra-chave: eugenia uniflora; ÓLEO ESSENCIAL; antioxidante Áreas do conhecimento: CIENCIAS_AGRARIAS; Tecnologia de Alimentos resumo ... Abstract Eugenia uniflora, known as the “Brazilian cherry”, is an economically important...
Classification of environmental factors potentially motivating for dairy cows to access shade DENIZ, MATHEUS; DE SOUSA, KAROLINI TENFFEN; GOMES, ISABELLE CORDOVA; Marcos Martinez do Vale; DITTRICH, JOÃO RICARDO JOURNAL OF DAIRY RESEARCH, v. 89, p. 1-4, 2021 DOI Home page Palavra-chave: animal distribution; Behavior pattern; decision tree; pasture; Precision livestock farming Áreas do conhecimento: CIENCIAS_AGRARIAS; Tecnologia de Alimentos; CIENCIAS_AGRARIAS; Zootecnia; Produção Animal; Manejo de Animais; CIENCIAS_AGRARIAS; Zootecnia; Bovinocultura de leite resumo ... Classification of environmental factors potentially motivating for dairy cows to access shade - Volume 88 Issue 3
Cold Tolerance in Sugarcane Progenies Under Natural Stress HÄRTER, ADÍLSON; DOS ANJOS E SILVA, SERGIO DELMAR; VERISSIMO, MARIO ALVARO ALOISIO; ANTUNES, WILLIAM RODRIGUES; LEMÕES, LUCAS SILVA; MASCARENHAS, LUIZE SILVA; João Carlos Bespalhok Filho; DE OLIVEIRA, RICARDO AUGUSTO SUGAR TECH, v. 23, n. 3, p. 508-518, 2021 DOI Palavra-chave: Cana-de-açúcar; Estresse Abiótico; Melhoramento de plantas Áreas do conhecimento: CIENCIAS_AGRARIAS; Fitotecnia; Melhoramento Vegetal resumo ... Cold stress reduces crop yields and quality, limiting agricultural expansion. The objective of this study was to evaluate cold tolerance in sugarcane (Saccharum spp.) progenies based on physiological and biometric characteristics under natural cold stress. The experiment was carried out at a station of the Temperate Climate Research Center, of the Brazilian Agricultural Research Corporation (Embrapa), in Pelotas, Rio Grande do Sul, where 21 full-sib sugarcane progenies were evaluated in an incomplete block design with six replications. Physiological and biometric characteristics were measured after frost events to determine cold tolerance. The components of variance, genetic parameters and correlations were estimated using mixed models (REML/BLUP). The meteorological data recorded on-site showed the occurrence of 13 frost events (0 °C) and a minimum temperature of − 2.9 °C. Genetic variability for cold tolerance was detected between and within progenies. Narrow-sense heritability was moderate for chlorophyll content (0.23), leaf damage (0.26), stalk damage (0.19) and total soluble solids content (0.44), while heritability at the progeny level was high for all traits (> 0.57). The genotypic values for cold tolerance and yield potential were highest in the progenies RB996962 × RB016916, RB016916 × RB996962, RB867515 × RB92579 and RB106802 × RB036088.
Colorimetry of Acacia mangium wood from plantations in northeast Brazil GOMES, STEPHANIE HELLEN BARBOSA; FRANÇA, RAMIRO FARIA; SANTOS, ROSIMEIRE CAVALCANTE DOS; Silvana Nisgoski; MUNIZ, GRACIELA INÊS BOLZON DE Rodriguesia, v. 72, p. e00962020. 2021 2021 DOI Palavra-chave: Colorimetria; acácia Áreas do conhecimento: CIENCIAS_AGRARIAS; Tecnologia e Utilização de Produtos Florestais; Tecnologia de Chapas resumo ... Abstract The aim of this study was to evaluate color characteristics in wood samples from Acacia...
Colour changes and equilibrium moisture content on thermomechanical densified wood CARVALHO, DOUGLAS E.; Márcio Pereira da Rocha; KLITZKE, RICARDO J.; CADEMARTORI, PEDRO HENRIQUE G. DE ANAIS DA ACADEMIA BRASILEIRA DE CIÊNCIAS, v. 93, n. 4, p. e20200109-10, 2021 DOI Home page Palavra-chave: colorimetry; Moisture content; Densification; Gmelina arborea Áreas do conhecimento: CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Tecnologia e Utilização de Produtos Florestais; Tratamento da Madeira; CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Tecnologia e Utilização de Produtos Florestais; Processamento Mecânico da Madeira; CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Tecnologia e Utilização de Produtos Florestais; Propriedades Fisico-Mecânicas da Madeira resumo ... Abstract Color change associated with significative positive improve in physical properties is a...

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