Results 21 to 30 of about 7,289 (166)

Processamento de compósitos termoestruturais de carbono reforçado com fibras de carbono [PDF]

Journal of Aerospace Technology and Management, 2009
The present work describes the processes used to obtain thermostructural Carbon/Carbon composites. The processing of these materials begins with the definition of the architecture of the carbon fiber reinforcement, in the form of stacked plies or in the form of fabrics or multidirectional reinforcement. Incorporating fiber reinforcement into the carbon
Pardini, Luiz Cláudio, Gonçalves, Adriano   +1 more
openaire   +3 more sources

A sustainable ecofriendly-synthesis of carbon foams from sugarcane, benefiting the waste to obtain activated carbons

Industrial Crops and Products
This study demonstrates, for the first time, that unprocessed sugarcane juice (SCJ) can be used directly as a sustainable precursor for the synthesis of carbon foams, yielding materials comparable to those obtained from commercial sucrose while avoiding ...
Roberto García, Noelia García, Ana Arenillas, Elena Rodríguez, María Antonia Diez, M. Rosa Martínez-Tarazona   +5 more
doaj   +1 more source

Provisão de serviços ecossistêmicos pelo solo de um fragmento florestal do Brejo Paraibano

Revista de Ciências Agroveterinárias, 2023
O avanço das atividades agropecuárias sobre os remanescentes de Mata Atlântica de Altitude do Nordeste acarretou na formação de fragmentos de floresta que precisam ser melhor entendidos.
Letícia Moro, Rodrigo Santana Macedo, Érica Olandini Lambais, George Rodrigues Lambais, Alexandre Pereira de Bakker   +4 more
doaj   +1 more source

Porous carbons with complex 3D geometries via selective laser sintering of whey powder

Scientific Reports
In addition to the inherent limitations of carbons to melt or flow, a vast majority of carbon precursors deforms during carbonisation, with stereolithography of thermoset resins being the preferred technology for 3D printing of carbons. An alternative is
Raúl Llamas-Unzueta, Alejandro Reguera-García, Miguel A. Montes-Morán, J. Angel Menéndez   +3 more
doaj   +1 more source

Revealing the Importance of Iron Aerogel Features as Electrocatalysts for the Oxygen Reduction Reaction

Gels
Metal nanoparticles supported in carbon materials are the traditional electrocatalyst currently used in many applications. However, these composite materials have many problems associated with the optimization of both components for the specific ...
Judith González-Lavín, Ana Arenillas, Natalia Rey-Raap   +2 more
doaj   +1 more source

A Bibliometric‐Based Review of Biochar for Salt‐Affected Soil Restoration: Mapping Research Trends and Future Directions

Land Degradation &Development, EarlyView.
ABSTRACT In recent years, biochar has been studied for its range of applications. Recognized by the IPCC as a key Carbon Dioxide Removal (CDR) strategy, it also stands out as an important tool for reclaiming degraded lands, including vast global areas affected by salinity, such as those in China, India, and Australia.
Juciane Vieira de Assis Freire, Darliane Cristina Soares de Souza, Larissa Fernandes da Silva, Poliana Pinheiro da Silva, Thiago Henrique Freire de Oliveira, Eulene Francisco da Silva, Bruno Caio Chaves Fernandes, Adriano Erique de Oliveira Lima, Bárbara Samartini Queiroz Alves, Daniel Valadão Silva, José Cleiton Sousa dos Santos, Frederico Ribeiro do Carmo, Rafael Leandro Fernandes Melo   +12 more
wiley   +1 more source

Nanotubos de carbono

Cadernos UniFOA, 2022
Nas últimas décadas, a nanotecnologia vem promovendo uma revolução tecnológica responsável por impulsionar a economia de diversos países. Dentre os nanomateriais mais utilizados, os nanotubos de carbono (NTC) se destacam por suas propriedades específicas.
openaire   +1 more source

Charge towards green finance ignores risks of nature commodification: Evidence from the UK's climate and nature recovery policy landscape

People and Nature, EarlyView.
Abstract The urgent need for up‐scaled finance has become central to the climate and nature recovery discourses worldwide. With most existing investments coming from public sources, closing the financing gap has become the overpowering argument for calling for private investments into nature restoration and conservation.
Julia Martin‐Ortega, Ruth Bookbinder, Joshua B. Cohen   +2 more
wiley   +1 more source

Direct Ink Writing of 3D‐Structured All‐Carbon Electrodes with High Electrical Conductivity for (Vanadium) Redox Flow Batteries

Advanced Science
Redox flow batteries are attractive systems for large‐scale energy storage due to their capability to uncouple energy and power but still need to make several improvements to reach full commercial scale.
Pablo Rodríguez Lagar, Alejandro Concheso, Daniel Barreda, Zoraida González, Miguel A. Montes‐Morán, J. Angel Menéndez, Clara Blanco, Ricardo Santamaría, Victoria G. Rocha   +8 more
doaj   +1 more source

Advanced Packed-Bed Ca-Cu Looping Process for the CO2 Capture From Steel Mill Off-Gases

Frontiers in Energy Research, 2020
A novel configuration of the Ca-Cu looping process based on dynamically operated packed-bed reactors is proposed to convert blast furnace gas (BFG) into H2/N2 and highly concentrated CO2, accompanied by a large amount of high-temperature heat ...
José Ramón Fernández, Vincenzo Spallina, Juan Carlos Abanades   +2 more
doaj   +1 more source