Results 41 to 50 of about 1,526 (182)

Propriedades físicas, químicas e de barreira em filme formados por blenda de celulose bacteriana e fécula de batata

Polímeros, 2013
A associação da celulose bacteriana com outros polímeros pode ser um método efetivo para aumentar suas características e estrutura, proporcionando novas aplicações industriais.
Denise M. Almeida, Adenise L. Woiciechowski, Gilvan Wosiacki, Rosilene A. Prestes, Luís A. Pinheiro   +4 more
doaj   +1 more source

NANOCRISTAIS DE CELULOSE A PARTIR DE CELULOSE BACTERIANA

Química Nova, 2015
Bacterial cellulose produced from Gluconacetobacter xilinus was used to produce cellulose nanocrystals by sulfuric acid hydrolysis. Hydrolysis was performed with 64% sulfuric acid at 50 ºC with the hydrolysis time ranging between 5 and 90 min. The production of nanocrystals was observed to have size distributions that were dependent on hydrolysis times
Lima, Lais R., Santos, Daniele B., Santos, Molíria V., Barud, Hernane S., Henrique, Mariana A., Pasquini, Daniel, Pecoraro, Edison, Ribeiro, Sidney J. L.   +7 more
openaire   +3 more sources

Influence of Botanical Origin on the Optical, Surface, and Nanomechanical Properties of Nanocellulose‐Based Films: A Comparative Study

Journal of Applied Polymer Science, Volume 143, Issue 19, May 15, 2026.
Schematic representation of the processing and multiscale characterization of nanocellulose films from different botanical sources. ABSTRACT Although the influence of botanical origin on nanocellulose properties is well recognized, an integrated multiscale framework linking chemical composition, fractal surface descriptors, and nanomechanical behavior ...
Márcia da Silva Costa, Erveton Pinheiro Pinto, Mário Vanoli Scatolino, Rodrigo Prioli Menezes, Adriano Reis Prazeres Mascarenhas, Matheus Cordazzo Dias, Gustavo Henrique Denzin Tonoli, Lina Bufalino, Francisco Tarcísio Alves Junior, Tiago Marcolino de Souza   +9 more
wiley   +1 more source

To be or Not to be Hybrids? A Case‐Study in an Allochthonous Population Involving Illegal Introductions of the Endangered Golden‐Headed and Golden Lion Tamarins

American Journal of Primatology, Volume 88, Issue 1, January 2026.
Genetic analyses of an allochthonous population of Leontopithecus, illegally introduced into an area of the Brazilian Atlantic Forest in Rio de Janeiro, did not detect signs of hybridization. This data provides crucial information to support conservation efforts and prevent new threats to the endangered lion tamarins. ABSTRACT Allochthonous species can
Gabriela Aliaga‐Samanez, Carla Gestich, Paola Andrea Ayala‐Burbano, Nathalia Bulhões Javarotti, Katherine McVay, Maria Cecilia Martins Kierulff, Ana Paula Cazerta Farro, Sílvia Bahadian Moreira, Alcides Pissinatti, Amy Goldberg, Pedro M. Galetti Jr., Patrícia Domingues de Freitas   +11 more
wiley   +1 more source

Avaliação das propriedades físico-mecânicas de polpas produzidas por novas sequências de branqueamento.

Ciência Florestal, 2010
A eficiência da deslignificação com oxigênio (pré-O2) é muito baixa para polpas de baixo número kappa e que contêm altas concentrações de ácidos hexenurônicos, pois o oxigênio não reage com esses ácidos, sendo mínima a eliminação destes durante a ...
Cristiane Pedrazzi, Jorge Luiz Colodette, Rubens Chaves de Oliveira, Marcelo Coelho dos Santos Muguet, José Lívio Gomide   +4 more
doaj   +1 more source

Assessment of the Mixing Procedure and the Effect of Carboxylated Nitrile Rubber as a Compatibilizer for Kraft Lignin/Nitrile Rubber Composites

SPE Polymers, Volume 7, Issue 1, January 2026.
Evaluation mixing procedures and carboxylated nitrile rubber in kraft lignin/nitrile rubber composites. ABSTRACT The growing interest in sustainable rubber materials motivates the use of renewable resources for the development of advanced materials. Lignin, valued for its abundance, biodegradability, and mechanical strengths, emerges as a promising ...
Nicoly Rosario da Costa, Gustavo Ninho Campos, Elisson Brum Dutra da Rocha, João Paulo Cosas Fernandes, Ana Maria Furtado de Sousa   +4 more
wiley   +1 more source

Chrysoporthe cubensis‐Induced Wilting in Eucalypt Mini‐Stumps: In Vitro Fungus and Disease Development

Journal of Phytopathology, Volume 174, Issue 1, January/February 2026.
ABSTRACT Chrysoporthe cubensis was reported to cause wilting that later progressed to dieback and death in eucalypt mini‐stumps. This study aimed to evaluate the influence of various factors on the in vitro development of C. cubensis and to reproduce the wilting symptoms in eucalypt following artificial inoculation. Conidial production by C.
Eduarda de Vasconcelos Silva, Lucas Roberto Barbosa da Silva, Vonicleia Santos Ribeiro, Caroline Silva Abreu, Franklin Jackson Machado, Rafael Ferreira Alfenas, Gleiber Quintão Furtado   +6 more
wiley   +1 more source

Ipso facto clauses in cross‐border insolvency: From STX Pan Ocean to Hanjin Shipping and beyond

International Insolvency Review, Volume 34, Issue 3, Page 793-821, Winter 2025.
Abstract This article examines the enforceability of ipso facto clauses in cross‐border insolvency, with a focus on the landmark STX Pan Ocean case. This case highlighted divergent judicial approaches and the critical role of legal frameworks in conflict‐of‐laws scenarios, as evidenced by the contrasting outcome in the Hanjin Shipping case.
WooJung Jon
wiley   +1 more source

Solubilização de fostatos por microrganismos na presença de fontes de carbono

Revista Brasileira de Ciência do Solo, 2000
O potencial de solubilização de fosfatos por bactérias e fungos cultivados em meio de cultura GEL (Glicose-Extrato de Levedura), suplementado com diferentes formas de fosfatos (cálcio, alumínio e ferro) e fontes de carbono (celulose, amido, sacarose ...
G. N. Silva Filho, C. Vidor
doaj   +1 more source

Assessment of Elemental Geochemistry: Enrichment and Mobilisation in Acid Sulfate Soils in Southeast Brazil

European Journal of Soil Science, Volume 76, Issue 3, May–June 2025.
ABSTRACT The spatial distribution of acid sulfate soils is influenced by coastal processes, and due to their location, these soils can accumulate significant amounts of trace elements. This study assesses the horizontal and vertical distribution of major elements (Ca, Mg, K, Al, Fe, S), minor elements (P, Ti, Mn), and trace elements (Ba Co, Cu, Cr, Mo,
Francis Henrique Tenório Firmino, João Carlos Ker, Maurício Paulo Ferreira Fontes, Hidelbandi Farias de Melo, Isabela Cristina Filardi Vasques, Jaime Wilson Vargas de Mello, Luiz Felipe Mesquita   +6 more
wiley   +1 more source