Results 31 to 40 of about 30,246 (153)

In Situ Amine Formation to Modulate MOF‐Derived PdIn N‐Doped Carbon Catalysts

open access: yesAdvanced Materials, EarlyView.
An amine‐assisted approach converts PdIn‐MOF into PdIn intermetallic nanoparticles embedded in N‐doped carbon. In situ‐generated amines trigger early Pd nucleation, producing smaller PdIn domains than direct pyrolysis. Amine sterics and basicity tune composition and particle size, while solvent and amine co‐determine textural features.
Gonzalo Egea   +9 more
wiley   +1 more source

Topology and Material Optimization in Ultra‐Soft Magneto‐Active Structures: Making Advantage of Residual Anisotropies

open access: yesAdvanced Materials, EarlyView.
Residual magnetization induces pronounced mechanical anisotropy in ultra‐soft magnetorheological elastomers, shaping deformation and actuation even without external magnetic fields. This study introduces a computational‐experimental framework integrating magneto‐mechanical coupling into topology optimization for designing soft magnetic actuators with ...
Carlos Perez‐Garcia   +3 more
wiley   +1 more source

Unveiling the Hidden Geometry of OECTs: Contact‐Semiconductor Overlap Driven Errors in Volumetric Capacitance

open access: yesAdvanced Materials Technologies, EarlyView.
This work examines how contact–semiconductor overlap influences volumetric capacitance extraction in organic electrochemical transistors as device dimensions shrink. It shows that neglecting overlap leads to systematic, geometry‐driven errors in capacitance values.
Renan Colucci   +7 more
wiley   +1 more source

Ficha técnica

open access: yesConexões: Ciência e Tecnologia, 2019
Conexões - Ciência e Tecnologia
doaj   +5 more sources

Stirring‐Induced Modulation of NIR Emission in Tm3+‐Doped Nanoparticles: Evidence of Apparent Risetime Sensitivity

open access: yesAdvanced Optical Materials, EarlyView.
Motion was found to induce significant variation in the luminescence intensity ratio of NIR‐emitting Tm3+‐doped NaYbF4 nanoparticles, which has been ascribed to the population dynamics of the Tm3+ ion's excited states. These findings provide the groundwork for the design of motion nanosensors that can operate in environments not accessible with UV–vis ...
York Estewin Serge‐Correales   +4 more
wiley   +1 more source

NIR I‐to‐NIR I Time‐Gated Luminescence Detection From Tm3+‐Doped Gd3TaO7 for Deep Tissue Imaging

open access: yesAdvanced Optical Materials, EarlyView.
A new generation of optical imaging (OI) using temporal resolution, exploring a NIR I‐to‐NIR I biological window emission by a Phonon Assisted Conversion (PAC) system singly doped with Tm3+ ions. Although still in early development, this approach opens new directions for designing optimized fluorophores to enhance bioimaging performance.
Fernanda H. Borges   +5 more
wiley   +1 more source

Documentos para a história do mais antigo jardim zoológico do Brasil: o parque zoobotânico do Museu Goeldi

open access: yesBoletim do Museu Paraense Emílio Goeldi. Ciências Humanas
O trabalho contextualiza a criação do Parque Zoobotânico do Museu Paraense Emílio Goeldi, em Belém (PA), no ano de 1895, considerado o mais antigo zoológico brasileiro.
Nelson Sanjad   +4 more
doaj   +1 more source

ACEITAÇÃO SENSORIAL DE POLENTA DOCE CONDIMENTADO COM MARACUJÁ

open access: yesRevista UniVap, 2017
Este trabalho teve como objetivo avaliar sensorialmente a aceitação de formulações de polenta doce condimentada com maracujá, ressaltando a necessidade de inserção de produtos inovados no mercado e, consequentemente a criação de novos nichos de mercados.
Elder Tonete Lasaro da Costa   +7 more
doaj   +1 more source

Materials‐Guided Gene‐Ionizable Lipid Nanoparticles to Reverse Iron‐Associated Immune Resistance in Renal Cancer

open access: yesAdvanced Science, EarlyView.
ABSTRACT Iron overload is a common metabolic disturbance in cancer and contributes to poor outcomes in renal cell carcinoma (RCC), yet its effects on the tumour immune microenvironment remain unclear. Here we identify a previously unrecognized immunosuppressive axis in which iron overload downregulates the palmitoyltransferase ZDHHC12 in CD8+ T cells ...
Xin Jin   +16 more
wiley   +1 more source

Biological soil loosening by grasses from genus Brachiaria in crop-livestock integration

open access: yesActa Scientiarum. Agronomy, 2015
Soil compaction associated with pastures degradation can decrease animal productivity, forage longevity and compromise environmental sustainability. To confront this serious issue, the loosening potential of forages should be recognized. We evaluated the
José Flávio Neto   +5 more
doaj   +1 more source

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