Results 1 to 10 of about 99,456 (251)

Levantamento dos recursos de energia solar no Brasil com o emprego de satélite geoestacionário: o Projeto Swera [PDF]

open access: diamondRevista Brasileira de Ensino de Física, 2004
O conhecimento da radiação solar incidente na Terra desempenha papel fundamental em muitas atividades humanas como, por exemplo, a agricultura, a arquitetura e o planejamento energético.
Fernando Ramos Martins   +2 more
doaj   +2 more sources

Barrierless Electron Transfer in a Photosynthetic Reaction Center Model. [PDF]

open access: yesAngew Chem Int Ed Engl
Ultrafast IR absorption spectroscopy was utilized to interrogate excited‐state electron transfer in a strongly‐coupled, cyanide‐bridged photoinduced mixed‐valent system. Despite structural asymmetry, a flat excited‐state potential energy surface with a single minimum was found, showing a Class III behavior.
Ullrich T   +3 more
europepmc   +3 more sources

Deciphering the Energy Transfer Mechanism Across Metal Halide Perovskite-Phthalocyanine Interfaces. [PDF]

open access: yesAdv Sci (Weinh)
This study presents photophysical insights into the energy transfer mechanism between CsPbBr3 perovskite nanocrystals (NCs) interfaced with zinc phthalocyanine (ZnPc) dyes by an unusual Dexter‐type singlet energy transfer, generating singlet oxygen as a proof‐of‐concept, using an arsenal of key time‐resolved spectroscopic techniques, such as ...
Cortés-Villena A   +6 more
europepmc   +2 more sources

Panorama da energia solar fotovoltaica no Brasil

open access: bronzeRevista Brasileira de Energia Solar, 2016
A matriz elétrica brasileira, composta em sua maior parte por hidrelétricas, depende de um nível estável de chuvas para manter seus reservatórios a níveis satisfatórios. Caso haja uma oscilação no regime das chuvas, e esta oscilação cause um impacto nos reservatórios, é necessário o acionamento das termoelétricas.
Antonio Robson Oliveira da Rosa   +1 more
openaire   +3 more sources

AQUECIMENTO DE ÁGUA POR ENERGIA SOLAR

open access: goldRevista Sinergia, 2001
Cefet-Sp (Ifsp)   +1 more
openaire   +3 more sources

Energia Solar

open access: yesEventos Pedagógicos, 2011
Este projeto trata da implantação de células fotovoltaicas na forma de postes independentes na área externa da escola Oswaldo Cruz em Sinop- MT, mais especificamente no estacionamento do local, e também a implantação de placas solares nas guaritas e nos
Paulo Henrique Dias de Borba   +3 more
doaj   +1 more source

Secondary frequency control of islanded microgrid considering wind and solar stochastics [PDF]

open access: yesActa Energiae Solaris Sinica 45 (2024) 523-533, 2023
This paper proposed a model predictive control (MPC) secondary frequency control method considering wind and solar power generation stochastics. The extended state-space matrix including unknown stochastic power disturbance is established, and a Kalman filter is used to observe the unknown disturbance.
arxiv   +1 more source

Electrified methane steam reforming on a washcoated SiSiC foam for low‐carbon hydrogen production

open access: yesAIChE Journal, Volume 69, Issue 1, January 2023., 2023
Abstract In view of largely available renewable electricity as a green future resource, here we report the electrification of a Rh/Al2O3 washcoated SiSiC foam for methane steam reforming (MSR). We show that, thanks to the suitable bulk resistivity of the SiSiC foam, its direct Joule heating up to relevant temperatures is feasible; the interconnected ...
Lei Zheng   +5 more
wiley   +1 more source

The green side of social innovation: Using sustainable development goals to classify environmental impacts of rural grassroots initiatives

open access: yesEnvironmental Policy and Governance, Volume 32, Issue 6, Page 459-477, December 2022., 2022
Abstract Social innovations are grassroots processes aiming to achieve impacts beyond an individual level and towards a broader societal good. The environmental dimension of impacts refers to any direct change to the environment resulting from social innovation activities, products, or services, which are not addressed by pre‐existing systems.
Valentino Marini Govigli   +5 more
wiley   +1 more source

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