Results 41 to 50 of about 697,704 (255)

Giant Intrinsic Chirality Amplification of Aqueous Lead Halide Perovskite Nanocrystals via H‐Bond Driven Self‐Assembly Superstructures

open access: yesAdvanced Functional Materials, EarlyView.
Water‐assisted monoclinic CsPbBr3 transformation strategy is applied for synthesizing aqueous CsPbBr3/CsPb2Br5 nanocrystals with superior water‐repellent and excellent optical property. Low temperature enhanced hydrogen bonding network self‐assembled CsPbBr3/CsPb2Br5 nanocrystals into asymmetric superstructures, which exhibit notable circularly ...
Mei Huang   +7 more
wiley   +1 more source

Justiça tecnológica: promessas e desafios [PDF]

open access: yes, 2008
Este livro visa responder às seguintes questões:Poderá a tecnologia servir como instrumento para expandir a eficácia da justiça e consolidar a cidadania?
Machado, Helena   +2 more
core  

An Edible H2O2 Biosensor for Gastrointestinal Metabolites and Peroxidase Enzyme Quantification

open access: yesAdvanced Healthcare Materials, EarlyView.
We present an edible biosensor for gastric fluid analysis that integrates a caffeic acid–horseradish peroxidase redox system into an edible electrolyte‐gated transistor. The device enables rapid, low‐volume detection of H2O2 and, with minimal modification, metabolites and enzyme activity in simulated gastrointestinal conditions.
Valerio Francesco Annese   +10 more
wiley   +1 more source

Ficha técnica

open access: yesConexões: Ciência e Tecnologia, 2018
Conexões - Ciência e Tecnologia
doaj   +5 more sources

Construir ciência, construir o mundo [PDF]

open access: yes, 2014
A história dos encontros nacionais de História das Ciências e da Tecnologia é recente. Em Junho de 2009, sob a égide do Ministério da Ciência, Tecnologia e Ensino Superior, realizou-se o primeiro encontro, que decorreu no Centro Cultural de Macau, em ...
Andrade, António   +3 more
core  

Dual‐Peptide Nanoplatform: Mesoporous Silica Nanoparticles Functionalized With a Cell‐Penetrating Peptide and Loaded With Rationally Designed Antimicrobial Peptides for Tuberculosis Therapy

open access: yesAdvanced Healthcare Materials, EarlyView.
Machine learning–guided engineering of a plectasin‐derived peptide yields DC05, a potent antimycobacterial candidate. Encapsulation into tuftsin‐functionalized mesoporous silica nanoparticles enhances intracellular delivery, stability, and activity against Mycobacterium tuberculosis while maintaining low cytotoxicity and minimal hemolysis. The combined
Christian S. Carnero Canales   +12 more
wiley   +1 more source

Transient Charging of Mixed Ionic‐Electronic Conductors by Anomalous Diffusion

open access: yesAdvanced Materials, EarlyView.
This article explores charge transport in mixed ionic‐electronic conductors (MIECs) through electrochemical impedance spectroscopy and transient current analysis. Focusing on PEDOT:PSS, WO3, and n‐doped PBDF, it uncovers the impact of anomalous diffusion via fractional modeling. The study reveals key correlations that deepen understanding and guide the
Heyi Zhang   +9 more
wiley   +1 more source

Racionalismo renovado e homem novo: de Amorim Viana a Sampaio Bruno [PDF]

open access: yes, 2009
Universidade Católica PortuguesaFundação para a Ciência e a Tecnologia (FCT)Imprensa Naciona-Casa da Moeda (INCM)Fundação Calouste GulbenkianPrograma Opreacional Ciência e Inovação ...
Gama, Manuel
core  

A Functional 2D Carbon Allotrope Combining Nanoporous Graphene and Biphenylene Segments

open access: yesAdvanced Materials, EarlyView.
The synthesis of a novel nanoporous graphene (NPG) is reported with biphenylene segments via thermal fusion of 12‐armchair porous graphene nanoribbons grown on gold surfaces. Characterization using STM, AFM, and DFT reveals low‐defect semiconducting behaviour and tunable band gaps.
Paula Angulo‐Portugal   +14 more
wiley   +1 more source

Ficha técnica

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

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