Results 51 to 60 of about 1,526 (182)

Avaliação das pesquisas e inovações tecnológicas ocorridas na silvicultura e na produção industrial de celulose no Brasil

Revista de Economia e Sociologia Rural, 2009
O objetivo deste trabalho é analisar a evolução das pesquisas e inovações tecnológicas ocorridas na silvicultura e na produção industrial de celulose no Brasil, dando ênfase aos seus impactos sobre a expansão dessa indústria.
Adriana Estela Sanjuan Montebello, Carlos José Caetano Bacha   +1 more
doaj   +1 more source

Acid Sulfate Soils and Their Impact on Surface Water Quality: A Case Study in Southeast Brazil

European Journal of Soil Science, Volume 76, Issue 3, May–June 2025.
ABSTRACT Re‐flooding of previously drained and oxidised acid sulfate soils (ASSs) can stimulate reduction processes while decreasing soil acidity, thereby mitigating the harmful effects of acidity. The aim of this study is to explore the pedogenesis of ASSs in a tropical climate and to assess the impact of ASS on surface water quality at the end of the
Francis Henrique Tenório Firmino, João Carlos Ker, Maurício Paulo Ferreira Fontes, Hidelbandi Farias de Melo, Jaime Wilson Vargas de Mello, Luiz Felipe Mesquita   +5 more
wiley   +1 more source

Componentes da parede celular e digestibilidade in vitro de palha de arroz (Oryza sativa) com diferentes teores de silício [PDF]

Ciência Rural, 2005
O silício (Si) é absorvido pelas plantas e acumulado na parte aérea, o que pode influenciar negativamente a qualidade nutricional das forragens. O presente trabalho tem o objetivo de avaliar o efeito do Si sobre a composição da parede celular, estimada ...
Leila Picolli da Silva, Leandro Souza da Silva, Humberto Bohnen   +2 more
doaj   +1 more source

Mineralogical Changes in Acid Sulfate Soils With Thionic Horizons: Insights From the Delta Doce River, Brazil

European Journal of Soil Science, Volume 76, Issue 2, March–April 2025.
ABSTRACT Acid sulfate soils (ASS) with sulfide minerals (i.e., contain sulfidic materials) are widely distributed in both coastal and inland regions, and if exposed to air, the oxidation of sulfide minerals results in the production of sulfuric acid with the formation of thionic horizons (pH < 4) along with profound mineralogical changes.
Francis Henrique Tenório Firmino, João Carlos Ker, Maurício Paulo Ferreira Fontes, Luiz Felipe Mesquita   +3 more
wiley   +1 more source

Efficiency of Sequential Extraction Schemes in Partitioning Toxic Elements in Acid Sulfate Soils With a Thionic Horizon

European Journal of Soil Science, Volume 76, Issue 2, March–April 2025.
ABSTRACT The use of sequential extraction methods is a common practice for analysing the availability of potentially toxic elements in soils and sediments. However, the simultaneous presence of oxidisable and reducible minerals in acid sulfate soils with a thionic horizon raises questions about the accuracy of these methods.
Francis Henrique Tenório Firmino, João Carlos Ker, Maurício Paulo Ferreira Fontes, Jaime Wilson Vargas de Mello, Hidelblandi Farias de Melo, Luiz Felipe Mesquita   +5 more
wiley   +1 more source

Anatomia quantitativa da folha e do colmo de Brachiaria brizantha (Hochst. ex A. Rich.) Stapf e B. humidicola (Rendle) Schweick Quantitative anatomy of leaves and stems of Brachiaria brizantha (Hochst. ex A. Rich.) Stapf and B. humidicola (Rendle) Schweick

Revista Brasileira de Zootecnia, 2004
As características da digestão das forragens podem ser mais bem compreendidas quando complementadas com estudos de anatomia dos tecidos de plantas forrageiras. Com o objetivo de agregar novas informações ao tema, determinou-se a área dos diversos tecidos
Cláudio José Freixeiro Alves de Brito, Roberto Antonio Rodella, Francisco Carlos Deschamps   +2 more
doaj   +1 more source

Ownership, institutions, and the agency of M&A completion

Global Strategy Journal, Volume 15, Issue 1, Page 153-183, February 2025.
Abstract Research Summary In this paper, we study how variations in debt and equity ownership and the institutions that govern interactions between different types of principals and agents affect the completion likelihood of acquisitions. Using a sample of 55,722 acquisitions, our study finds that risk‐averse debtholders reduce the completion ...
Thomas Lindner, Jakob Müllner, Harald Puhr   +2 more
wiley   +1 more source

Phylogenetic conservatism in the relationship between functional and demographic characteristics in Amazon tree taxa

Functional Ecology, Volume 39, Issue 1, Page 181-198, January 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Leaf and wood functional traits of trees are related to growth, reproduction, and survival, but the degree of phylogenetic conservatism in these relationships is largely unknown.
Pablo Sanchez‐Martinez, Kyle G. Dexter, Freddie C. Draper, Chris Baraloto, Iêda Leão do Amaral, Luiz de Souza Coelho, Francisca Dionízia de Almeida Matos, Diógenes de Andrade Lima Filho, Rafael P. Salomão, Florian Wittmann, Carolina V. Castilho, Marcelo de Jesus Veiga Carim, Juan Ernesto Guevara, Oliver L. Phillips, William E. Magnusson, Daniel Sabatier, Juan David Cardenas Revilla, Jean‐François Molino, Mariana Victória Irume, Maria Pires Martins, José Renan da Silva Guimarães, José Ferreira Ramos, Olaf S. Bánki, Maria Teresa Fernandez Piedade, Dairon Cárdenas López, Nigel C. A. Pitman, Layon O. Demarchi, Jochen Schöngart, Bruno Garcia Luize, Evlyn Márcia Moraes de Leão Novo, Percy Núñez Vargas, Thiago Sanna Freire Silva, Eduardo Martins Venticinque, Angelo Gilberto Manzatto, Neidiane Farias Costa Reis, John Terborgh, Katia Regina Casula, Euridice N. Honorio Coronado, Abel Monteagudo Mendoza, Juan Carlos Montero, Flávia R. C. Costa, Ted R. Feldpausch, Adriano Costa Quaresma, Nicolás Castaño Arboleda, Charles Eugene Zartman, Timothy J. Killeen, Beatriz S. Marimon, Ben Hur Marimon‐Junior, Rodolfo Vasquez, Bonifacio Mostacedo, Rafael L. Assis, Dário Dantas do Amaral, Julien Engel, Hernán Castellanos, Marcelo Brilhante de Medeiros, Marcelo Fragomeni Simon, Ana Andrade, José Luís Camargo, William F. Laurance, Susan G. W. Laurance, Lorena Maniguaje Rincón, Juliana Schietti, Thaiane R. Sousa, Emanuelle de Sousa Farias, Maria Aparecida Lopes, José Leonardo Lima Magalhães, Henrique Eduardo Mendonça Nascimento, Helder Lima de Queiroz, Gerardo Aymard, Roel Brienen, Pablo R. Stevenson, Alejandro Araujo‐Murakami, Bruno Barçante Ladvocat Cintra, Tim R. Baker, Yuri Oliveira Feitosa, Hugo F. Mogollón, Carlos A. Peres, Miles R. Silman, Leandro Valle Ferreira, José Rafael Lozada, James A. Comiskey, José Julio de Toledo, Gabriel Damasco, Nállarett Dávila, Roosevelt García‐Villacorta, Aline Lopes, Alberto Vicentini, Fernando Cornejo Valverde, Alfonso Alonso, Luzmila Arroyo, Francisco Dallmeier, Vitor H. F. Gomes, David Neill, Maria Cristina Peñuela Mora, Janaína Costa Noronha, Daniel P. P. de Aguiar, Flávia Rodrigues Barbosa, Yennie K. Bredin, Rainiellen de Sá Carpanedo, Fernanda Antunes Carvalho, Fernanda Coelho de Souza, Kenneth J. Feeley, Rogerio Gribel, Torbjørn Haugaasen, Joseph E. Hawes, Marcelo Petratti Pansonato, John J. Pipoly III, Marcos Ríos Paredes, Domingos de Jesus Rodrigues, Jos Barlow, Erika Berenguer, Izaias Brasil da Silva, Maria Julia Ferreira, Joice Ferreira, Paul V. A. Fine, Marcelino Carneiro Guedes, Carolina Levis, Juan Carlos Licona, Boris Eduardo Villa Zegarra, Vincent Antoine Vos, Carlos Cerón, Flávia Machado Durgante, Émile Fonty, Terry W. Henkel, John Ethan Householder, Isau Huamantupa‐Chuquimaco, Marcos Silveira, Juliana Stropp, Raquel Thomas, Doug Daly, William Milliken, Guido Pardo Molina, Toby Pennington, Ima Célia Guimarães Vieira, Bianca Weiss Albuquerque, Wegliane Campelo, Alfredo Fuentes, Bente Klitgaard, José Luis Marcelo Pena, J. Sebastián Tello, Corine Vriesendorp, Jerome Chave, Anthony Di Fiore, Renato Richard Hilário, Luciana de Oliveira Pereira, Juan Fernando Phillips, Gonzalo Rivas‐Torres, Tinde R. van Andel, Patricio von Hildebrand, William Balee, Edelcilio Marques Barbosa, Luiz Carlos de Matos Bonates, Hilda Paulette Dávila Doza, Ricardo Zárate Gómez, Therany Gonzales, George Pepe Gallardo Gonzales, Bruce Hoffman, André Braga Junqueira, Yadvinder Malhi, Ires Paula de Andrade Miranda, Linder Felipe Mozombite Pinto, Adriana Prieto, Agustín Rudas, Ademir R. Ruschel, Natalino Silva, César I. A. Vela, Stanford Zent, Egleé L. Zent, Angela Cano, Yrma Andreina Carrero Márquez, Diego F. Correa, Janaina Barbosa Pedrosa Costa, Bernardo Monteiro Flores, David Galbraith, Milena Holmgren, Michelle Kalamandeen, Guilherme Lobo, Luis Torres Montenegro, Marcelo Trindade Nascimento, Alexandre A. Oliveira, Maihyra Marina Pombo, Hirma Ramirez‐Angulo, Maira Rocha, Veridiana Vizoni Scudeller, Maria Natalia Umaña, Geertje van der Heijden, Emilio Vilanova Torre, Cláudia Baider, Henrik Balslev, Sasha Cárdenas, Luisa Fernanda Casas, William Farfan‐Rios, Cid Ferreira, Reynaldo Linares‐Palomino, Casimiro Mendoza, Italo Mesones, Germaine Alexander Parada, Armando Torres‐Lezama, Daniel Villarroel, Roderick Zagt, Miguel N. Alexiades, Edmar Almeida de Oliveira, Riley P. Fortier, Karina Garcia‐Cabrera, Lionel Hernandez, Walter Palacios Cuenca, Susamar Pansini, Daniela Pauletto, Freddy Ramirez Arevalo, Adeilza Felipe Sampaio, Elvis H. Valderrama Sandoval, Luis Valenzuela Gamarra, Masha van der Sande, Lourens Poorter, Hans ter Steege   +214 more
wiley   +1 more source

Aplicação de silicatos de cálcio e de potássio e o crescimento de mudas de Eucalyptus grandis

Pesquisa Florestal Brasileira, 2011
O uso de silicato é uma prática que vem sendo adotada com frequência em culturas anuais, muito embora poucos trabalhos tenham sido realizados com intuito de verificar sua eficiência em espécies florestais arbóreas. O objetivo principal desta pesquisa foi
Itamar Antonio Bognola, Lina Avila Clasen, Luziane Franciscon, Jose Luiz Gava, Renato Antonio Dedecek, Fernando Márcio da Silva   +5 more
doaj  

Template‐Free ZSM‐5 Synthesis Using Bio‐Sourced Waste Materials

European Journal of Inorganic Chemistry, Volume 27, Issue 34, December 2, 2024.
Hydrochars from lignocellulosic waste were added to ZSM‐5 OSDA‐free synthesis. These bio‐sourced materials mediated the ZSM‐5 crystals aggregation during their synthesis. Thus, morphology and acidity changed due to the presence of hydrochars. Brønsted and Lewis acid sites were specially increased.
Helena Schneider, Thaís Schmitz, Camila Gomes Flores, Benoît Louis, Isabel Cristina Tessaro, Nilson Romeu Marcilio   +5 more
wiley   +1 more source