Results 81 to 90 of about 240,649 (221)

Effect of Designed 3D Reinforcement in Mitigating Machining Damage on CFRP Plates

open access: yesPolymer Composites, EarlyView.
Effect of Edge Tufting on Surface Quality, Damage, and Mechanical Performance in CFRP Machining: A Comparative Topographical and Structural Analysis. ABSTRACT Composite materials made of carbon fiber‐reinforced epoxy (CFRP) are widely used in aerospace fields due to their high strength‐to‐weight ratio. However, due to low out‐of‐plane resistance, these
Thiago Luiz Lara Oliveira   +2 more
wiley   +1 more source

ADQUISICIÓN DE DATOS PARA LA IDENTIFICACIÓN DE ATMÓSFERAS EXPLOSIVAS EN MINAS SUBTERRÁNEAS DE CARBÓN MEDIANTE WSN

open access: yesBoletín de Ciencias de la Tierra, 2013
Se diseña una herramienta para la identificación de atmósferas explosivas en minas de carbón, utilizando los métodos de predicción Triángulos de Coward y diagramas de explosividad del U. S.
Jovani Alberto Jiménez Builes   +2 more
doaj  

Projeção do estoque de carbono e análise da geração de créditos em povoamentos de eucalipto Carbon stock projection and credit generation analysis in eucalypt stands

open access: yesRevista Árvore, 2008
Este estudo teve como objetivo predizer a produção volumétrica e o estoque de carbono nos fustes das árvores em povoamentos de eucalipto, bem como avaliar economicamente a inclusão dos Certificados de Emissões Reduzidas (CERs) nos projetos florestais ...
Rodrigo Firmino da Silva   +5 more
doaj   +1 more source

Anticomunismo y control social en Chile, la experiencia de los trabajadores del carbón en Lota y Coronel, a mediados del siglo XX. [PDF]

open access: yes, 2013
En los inicios de la década de 1940 la región del carbón en Chile estaba fuertemente influenciada por el Partido Comunista, situación que se contradecía, de acuerdo a los empresarios y autoridades nacionales, con el carácter estratégico de aquella ...
Venegas Valdebenito, Hernán
core   +2 more sources

Tuning catalytic activity and sensitivity in urease‐based thin film biosensors using conjugated polymers and eugenol/biseugenol

open access: yesPolymer International, EarlyView.
Hybrid thin films of conjugated polymers and urease modified with eugenol derivatives show that polymer–biomolecule interactions enhance catalytic activity while distinctly modulating electrolyte–insulator–semiconductor sensor sensitivity. Abstract Thin films have emerged as promising platforms for biosensor development due to their versatility and ...
Thaísa da Silva de Souza   +7 more
wiley   +1 more source

Atividade dos herbicidas flumioxazin e metribuzin em diferentes solos Activity of flumioxazin and metribuzin herbicides in different soils

open access: yesPlanta Daninha, 1998
A atividade dos herbicidas flumioxazin e metribuzin foi avaliada, em casa-de-vegetação, em quatro tipos de solos usando areia lavada como controle. Os solos, coletados em diferentes regiões agrícolas, foram classificados como: PVc coletado em Viçosa-MG ...
Maurílio F. de Oliveira   +3 more
doaj   +1 more source

Peptidic product derived from trypsin autolysis modulates insect digestive proteases and supports plant biochemical defense

open access: yesPest Management Science, EarlyView.
XXXX Abstract BACKGROUND Spodoptera frugiperda, commonly known as the fall armyworm, is a highly economically significant pest that affects various crops, resulting in substantial losses in productivity. Managing this pest primarily relies on chemical insecticides; however, the repeated development of resistance to these chemicals has rendered them ...
Daniel Guimarães Silva Paulo   +9 more
wiley   +1 more source

Unidad piloto para ensayos de carbonización con hullas

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 1985
El presente artículo busca presentar uno de los trabajos que en el campo de la carbonización, ha realizado el CENTRO DE INVESTIGACIONES SOBRE EL CARBON, de la Facultad Nacional de Minas. Al saber que el potencial carbonífero antioqueño es alto, que sus
Jaime Aguirre C.   +7 more
doaj   +1 more source

Importancia de la implementación de un sistema de gestión en seguridad y salud ocupacional para el sector minero: NTC - OHSAS 18001 [PDF]

open access: yes, 2012
Las discusiones entorno a la minería no solamente tienen que ver con la estructura institucional, reformas al código minero, que abarca desde las licencias mineras, atención al medio ambiente, sino también con la seguridad y salud ocupacional del minero.
Solano Jiménez, Jemmy Andrea
core  

Enhanced Active Packaging Properties Through the Incorporation of Pomegranate Seed Oil Micro‐ and Nanoparticles

open access: yesPackaging Technology and Science, EarlyView.
Biodegradable cassava starch films were developed incorporating micro‐ and nanoencapsulated pomegranate seed oil (PSO). The films exhibited enhanced mechanical flexibility, antioxidant activity and UV‐barrier properties. Particle size influenced the functional behaviour, highlighting lipid encapsulation as a key strategy to stabilize bioactive ...
Amanda Tibães Lopes   +7 more
wiley   +1 more source

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