Publicações - ciências agrárias
|
Pedro Lício Loiola;
R J Klitzke;
Márcio Pereira da Rocha;
Graziela Baptista Vidaurre
Palavra-chave:
Quality of wood;
Specific gravity;
Dimensional stability;
Tropical pine;
Wood pencil
Áreas do conhecimento:
CIENCIAS_AGRARIAS; 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 ...
(pt)
The behavior of the physical properties of wood is important for its use in the industrial sector. Manufacturing for pencil production requires raw material with low specific mass and high dimensional stability. The objective of this study was to evaluate the properties of the physical specific basic mass properties, anhydrous and green, as well as the retractability of the 14 years old Pinus caribaea var. caribaea , 25 years old Pinus caribaea var. hondurensis and 35 years old Pinus oocarpa in the medulla sense of the bark, base and top of the trees. All species come from the Brazilian Cerrado region afforestation. As for dimensional stability, the Pinus caribaea var. caribaea and Pinus oocarpa had similar behaviors to the volumetric contraction, when evaluating the coefficient of anisotropy of wood species of Pinus caribaea var. caribaea had higher values of anisotropy coefficient, however, all tropical pine studied, qualify as a raw material for the pencil industry, being an alternative species traditionally used.
|
|
Pedro Lício Loiola;
R J Klitzke;
Márcio Pereira da Rocha;
Graziela Baptista Vidaurre
Palavra-chave:
Quality of wood;
Specific gravity;
Dimensional stability;
Tropical pine;
Wood pencil
Áreas do conhecimento:
CIENCIAS_AGRARIAS; 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 ...
(pt)
The behavior of the physical properties of wood is important for its use in the industrial sector. Manufacturing for pencil production requires raw material with low specific mass and high dimensional stability. The objective of this study was to evaluate the properties of the physical specific basic mass properties, anhydrous and green, as well as the retractability of the 14 years old Pinus caribaea var. caribaea , 25 years old Pinus caribaea var. hondurensis and 35 years old Pinus oocarpa in the medulla sense of the bark, base and top of the trees. All species come from the Brazilian Cerrado region afforestation. As for dimensional stability, the Pinus caribaea var. caribaea and Pinus oocarpa had similar behaviors to the volumetric contraction, when evaluating the coefficient of anisotropy of wood species of Pinus caribaea var. caribaea had higher values of anisotropy coefficient, however, all tropical pine studied, qualify as a raw material for the pencil industry, being an alternative species traditionally used.
|
|
SANTOS, EDUARDO L.;
Wanderlei do Amaral;
Cícero Deschamps;
JUNIOR, JOSÉ PINTO SIQUEIRA;
FILHO, JOSÉ MARIA BARBOSA;
DE SOUSA, GABRIELA RIBEIRO;
COUTINHO, HENRIQUE D.M.;
FREITAS, PRISCILLA R.;
ARAÚJO, ANA CAROLINA J.;
ALMEIDA, RAY S.;
TINTINO, SAULO R.;
PAULO, CICERA LAURA R.;
RIBEIRO-FILHO, JAIME;
SILVA, ANA CRISTINA A.;
SILVA, LUIZ E.
Palavra-chave:
Aloysia gratissima;
Antibacterial
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Tecnologia de Alimentos
resumo ...
|
|
DA SILVA, TAÍS GUSMÃO;
COUTINHO, HENRIQUE DOUGLAS MELO;
FILHO, JAIME RIBEIRO;
MORAIS-BRAGA, MARIA FLAVIANA BEZERRA;
DA SILVA, JOSEFA CAROLAINE PEREIRA;
CARNEIRO, JOARA NÁLYDA PEREIRA;
DO AMARAL, WANDERLEI;
Cícero Deschamps;
DE ARAUJO, JENIFER PRISCILA;
DA COSTA, JOSÉ GALBERTO MARTINS;
DE OLIVEIRA ALMEIDA, WALTÉCIO;
DA SILVA, LUIZ EVERSON
Palavra-chave:
Baccharis;
Inhibition;
Candida sp
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Tecnologia de Alimentos
resumo ...
This study aimed to investigate the chemical composition and antifungal potential of the essential oil of Baccharis trimera (Less.) DC. against Candida strains. The half maximal inhibitory concentration (IC50) was assessed by the microdilution method using the essential oil at a concentration range of 8192 to 8 μg/mL. The minimum fungicide concentration (MFC) was determined by subculture in solid medium. The ability of the essential oil to modulate the activity of antifungals was determined in wells treated simultaneously with the oil at a subinhibitory concentration (MFC/16) and fluconazole (FCZ). The fungal morphology was analyzed by microscopy. Gas chromatography coupled with mass spectrometry (GC/MS) was used to identify the chemical composition. The essential oil presented an CI50 of 11.24 and 1.45 μg/mL, which was found to potentiate the effect of FCZ against Candida albicans. On the other hand, this combined treatment resulted in antagonism against Candida tropicalis and no evident modulation against Candida krusei was observed. The essential oil significantly inhibited hyphae growth. However, with a MFC ≥ 16,384 μg/mL, it is assumed that it has a fungistatic action. The antifungal properties demonstrated in this study might be related to the presence of sesquiterpenes and monoterpenes, and the interaction between them. In conclusion, Baccharis trimera showed promising anti-Candida effects, in addition to potentiating the activity of FCZ against Candida albicans, affecting its morphological transition. Therefore, this species constitutes a source of chemical compounds with the potential to be used in the combat of fungal infections.
|
|
BUSO, PEDRO HENRIQUE DE MEDEIROS;
Ricardo Augusto de Oliveira;
DAROS, EDELCLAITON;
José Luis Camargo Zambon;
VENANCIO, WILSON STORY;
SOUCHIE, EDSON LUIZ;
BUSO, ELLEN KARINE ROCCO PIFFER DE MEDEIROS;
DÍAZ-ZORITA, MARTÍN
Palavra-chave:
manejo de lavouras;
inoculação;
soja
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Fitotecnia; Manejo e Tratos Culturais
resumo ...
ABSTRACT: Plant growth analysis can be used for soybean plants evaluation to identify...
|
|
Patrícia da Silva Dias;
Jailson Novodworski;
Bruno José Lima Silva;
Fábio Meurer
Brazilian Journal of Animal and Environmental Research,
v. 4,
n. 2,
p. 1572-1581,
2021
DOI
Home page
Palavra-chave:
Aquicultura;
bagre;
curimbatá;
peixe nativo;
piscicultura
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Aqüicultura
resumo ...
|
|
Paulo de Tarso Cunha Chaves;
André Martins Vaz-dos-Santos;
Pollyana Obera Birnfeld
Palavra-chave:
reprodução;
Brazilian fisheries;
crescimento;
cavala;
Teleostei
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Recursos Pesqueiros e Engenharia de Pesca; Recursos Pesqueiros Marinhos; Manejo e Conservação de Recursos Pesqueiros Marinhos
resumo ...
Abstract Scomberomorus brasiliensis is the most important fish species of the small-scale...
|
|
Paulo de Tarso Cunha Chaves;
Pollyana Olbera Birnfeld;
André Martins Vaz dos Santos
Palavra-chave:
Reproductive Biology;
growth;
artisanal;
Management;
Southwestern Atlantic
resumo ...
Abstract Scomberomorus brasiliensis is the most important fish species of the small-scale...
|
|
Alvaro do Nascimento Rodrigues;
Leandro Flávio Carneiro;
Daniella Nogueira Moraes Carneiro;
Paulo César Timossi;
Thomaz Adolpho Rein;
João de Deus Gomes dos Santos Júnior
Palavra-chave:
Saccharum;
potassium fertilization management;
stalk yield;
sugar yield
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Tecnologia de Alimentos;
CIENCIAS_AGRARIAS; Agronomia; Ciência do Solo; Fertilidade do Solo e Adubação
resumo ...
|
|
Alvaro do Nascimento Rodrigues;
Leandro Flávio Carneiro;
Daniella Nogueira Moraes Carneiro;
Paulo César Timossi;
Thomaz Adolpho Rein;
João de Deus Gomes dos Santos Júnior
Palavra-chave:
Saccharum;
potassium fertilization management;
stalk yield;
sugar yield
resumo ...
|
