Results 111 to 120 of about 1,332,942 (289)

Nanomateriais : arte, ciência e tecnologia [PDF]

open access: yes, 2013
A secção Biologia é coordenada pelo Professor Universitário Armindo Rodrigues.[…]. A nanotecnologia centra-se no estudo e no desenvolvimento de novos materiais, dispositivos e sistemas, a uma escala nanométrica.
Vasconcelos, Helena Cristina
core  

The Influence of Annealing on the Sb Layer in the Synthesis of [001]‐Oriented Sb2Se3 Film for Photoelectrochemical Hydrogen Gas Generation

open access: yesAdvanced Functional Materials, EarlyView.
[001]‐oriented Sb2Se3 film with improved crystallinity and adjusted composition is achieved via a new thermal treatment approach consisting of preliminary annealing of the Sb layer before its selenization. The findings of this work demonstrate enhanced charge carriers' transportation, a stable performance, and an improvement of H2 generation from ...
Magno B. Costa   +7 more
wiley   +1 more source

ASSOCIATE EDITORS AND REVIEWERS AD HOC

open access: yesCiência Florestal, 2012
Ciência Florestal
doaj   +1 more source

Ciência experimental com públicos incomuns [PDF]

open access: yes, 2016
Em Portugal, a Universidade do Minho forma educadores não formais de adultos há mais de 25 anos, promovendo o empoderamento das populações e estimulando a intervenção e a mudança nas suas comunidades.
Alves, Alice   +5 more
core  

Printed Integrated Logic Circuits Based on Chitosan‐Gated Organic Transistors for Future Edible Systems

open access: yesAdvanced Functional Materials, EarlyView.
Edible electronics needs integrated logic circuits for computation and control. This work presents a potentially edible printed chitosan‐gated transistor with a design optimized for integration in circuits. Its implementation in integrated logic gates and circuits operating at low voltage (0.7 V) is demonstrated, as well as the compatibility with an ...
Giulia Coco   +8 more
wiley   +1 more source

Wavelength‐Dependent Differential Amplification of Raman Scattering by Chiral Gold Nanorods for Multiplexed Encoding

open access: yesAdvanced Functional Materials, EarlyView.
The SERS spectra of reporter molecules adsorbed on chiral gold nanorods depends on the handedness of circularly polarized light (CPL‐SERS). The bisignate plasmonic CD spectra of chiral nanorods provides wavelength‐dependent CPL‐SERS. Selective discrimination of chiral nanorod handedness and different Raman reporters allow highly sensitive codification ...
Andrés Serrano‐Freijeiro   +9 more
wiley   +1 more source

Agroecologia, ciência e emancipação humana. [PDF]

open access: yes, 2013
No artigo é discutido um enfoque científico que pode contribuir para a superação das contradições causadas pelo positivismo e pelo pós-modernismo em relação ao caráter emancipatório da Agroecologia.
Silva Neto, Benedito
core   +1 more source

Self‐Assembled Gallium Sulfide (GaS) Heterostructures Enabling Efficient Water Splitting and Selective Ammonia Sensing

open access: yesAdvanced Functional Materials, EarlyView.
Gallium sulfide (GaS) forms self‐assembled heterostructures with its native oxide, exhibiting high performance in water splitting and ultrasensitive and selective ammonia detection. Surface defects and controlled oxidation enhance catalytic activity and sensing response.
Danil W. Boukhvalov   +13 more
wiley   +1 more source

Ternary Synergy in Layered Double Hydroxides for Efficient and Stable Nitrate Reduction

open access: yesAdvanced Functional Materials, EarlyView.
Ternary CuZnFe LDH enables efficient electrocatalytic nitrate‐to‐ammonia conversion via controlled in situ reconstruction: zinc leaching creates porous active sites, copper reduced to metallic copper, while iron oxide keeps stable. Synergistic Cu‐Fe redox coupling drives tandem catalysis (nitrate→nitrite→NH3), achieving 95% Faraday efficiency and ...
Jiaqian Kang   +9 more
wiley   +1 more source

A ciência de Alfonso Bovero em São Paulo: IV

open access: gold, 1947
Liberato J. A. Di Dio
openalex   +2 more sources

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