Zobrazeno 1 - 10
of 396
pro vyhledávání: '"Valter José"'
Autor:
Karoline de Sousa Castro, Aruzza Mabel de Morais Araujo, Alyxandra Carla de Medeiros Batista, Valter José Fernandes Júnior, Sibele Berenice Castella Pergher, Amanda Duarte Gondim
Publikováno v:
Química Nova, Vol 45, Iss 7, Pp 807-815 (2022)
Biodiesel is a renewable fuel, a substitute for fossil diesel, which is important for reducing GHG in Brazil. Therefore, this work aims to synthesize and characterize the catalyst using the support of natural zeolite impregnated with K2O and apply it
Externí odkaz:
https://doaj.org/article/7eab9e98cb6c4ee7955f0ef9cf413910
Publikováno v:
Buildings, Vol 13, Iss 3, p 601 (2023)
The paper presents a full-scale blast testing experimental campaign conducted on an energyabsorbing connector comprising thin-walled inversion tubes as kernel elements mounted in a façade protective panel. LS-DYNA finite element predictions of the g
Externí odkaz:
https://doaj.org/article/cff3c82062a243a98f0d695c93077b70
Publikováno v:
Agropecuária Catarinense, Vol 26, Iss 1 (2020)
As cigarrinhas-das-pastagens incidem em gramíneas forrageiras, reduzindo a produtividade e a qualidade dos pastos. A flutuação populacional desses insetos foi estudada na grama-missioneira-gigante (Axonopus catharinensis Valls) em Chapecó, SC, d
Externí odkaz:
https://doaj.org/article/5044e730a56b4fe9bdf2316cea789906
Autor:
Amanda Duarte Gondim, Maria Fernanda Vicente Santos, Tatiane Potiguara Oliveira, Camila Gisele Damasceno Peixoto, Alyxandra Carla Medeiros Batista, Valter José Fernandes Jr.
Publikováno v:
Holos, Vol 1, Iss 0, Pp 241-254 (2017)
O biodiesel consiste de um combustível biodegradável derivado de óleos vegetais e gorduras animais, formado por ésteres de ácidos graxos, ésteres de alquila (metila, etila ou propila) de ácidos carboxílicos de cadeia longa. O processo convenc
Externí odkaz:
https://doaj.org/article/fabed308c70d4052bab6d38ec3e5fd4a
Publikováno v:
Redes, Vol 20, Iss 2, Pp 158-175 (2015)
This paper evaluates the technical efficiency in rice farms in Rio Grande do Sul (RS). For this, we use the Data Envelopment Analysis (DEA) and the Tobit regression model. The study use the variables available in the Census of the Institute of Irriga
Externí odkaz:
https://doaj.org/article/19fbb58a59a6403992a726437f042826
EVOLUÇÃO E CONVERGÊNCIA DA PRODUTIVIDADE DO TRABALHO NA AGROPECUÁRIA DO RIO GRANDE DO SUL, 1975-2006
Autor:
Adelar Fochezatto, Valter José Stülp
Publikováno v:
Redes, Vol 19, Iss 2, Pp 166-181 (2014)
O estudo analisa a convergência da produtividade da mão de obra na agropecuária do Rio Grande do Sul. Examina, também, as variáveis explicativas da evolução através da técnica estatística dos componentes principais seguida da regressão est
Externí odkaz:
https://doaj.org/article/831b1ba46ff2411ba55c781ee73fdab9
Autor:
Tatiane Alves, Valter José Cobo
Publikováno v:
Revista Ambiente & Água, Vol 8, Iss 4, Pp 168-182 (2013)
The majority of the Una River Basin is located in Taubaté County and contributes significantly to its water supply. The main goal of this research was to evaluate the water quality of the Una River using the microcrustacean C. dubia as bioindicator
Externí odkaz:
https://doaj.org/article/24b7cb2d9e8b476d90e22c1de6f969e2
Autor:
Douglas Fernandes Rodrigues-Alves, Samara de Paiva Barros-Alves, Vivian Fransozo, Giovana Bertini, Valter José Cobo
Publikováno v:
Latin American Journal of Aquatic Research, Vol 41, Iss 3, Pp 459-467 (2013)
In order to better understand the ecology of the different growth phases of the stone crab, Menippe nodifrons, and provide information for conservation of the natural stocks, this study describes the utilization of different biogenic substrates by th
Externí odkaz:
https://doaj.org/article/b84acc31c7734540b670e611b31cebdc
Autor:
Samara de Paiva Barros-Alves, Ariádine Cristine Almeida, Vivian Fransozo, Douglas Fernandes Rodrigues Alves, José Carlos da Silva, Valter José Cobo
Publikováno v:
Acta Limnologica Brasiliensia, Vol 24, Iss 3, Pp 266-275 (2012)
AIM: The population biology of the freshwater shrimp Macrobrachium jelskii was investigated here emphasizing the length-frequency distribution, sex ratio, reproductive period and juvenile recruitment. In addition, the abundance of individuals was cor
Externí odkaz:
https://doaj.org/article/1c5008d6f0e740378757a9d570c551c8
Autor:
Luzia Patricia Fernandes de Carvalho Galvão, Marcela Nascimento Barbosa, Antonio Souza Araujo, Valter José Fernandes Júnior, Anne Gabriela Dias Santos, Geraldo E. Luz Jr
Publikováno v:
Química Nova, Vol 35, Iss 1, Pp 41-44 (2012)
Iodide potassium incorporated on mesoporous molecular sieves (SBA-15 and MCM-41) was used as heterogeneous catalysts in the transesterification of sunflower oil under different conditions of reaction time and ratio catalyst/oil (w/w). The results hav
Externí odkaz:
https://doaj.org/article/e95312c1e29b4a7282f6c2e030c95b8e