Results 41 to 50 of about 1,309,693 (350)

Subjetividade e tecnologia

ETD - Educação Temática Digital, 2008
Quando falamos em ciência e tecnologia, pensamos em produtos e eventos contemporâneos. Pensamos em máquinas, computadores, performance, em precisão, velocidade. Pensamos em coisas que potencializam a ação humana e que facilitam a vida. Esquecemos que ciência & tecnologia é um projeto muito antigo do homem que tem sua origem na necessidade e vontade
openaire   +6 more sources

Mechanisms of De‐icing by Surface Rayleigh and Plate Lamb Acoustic Waves

Advanced Engineering Materials, EarlyView.
Ice accretion impacts daily life, renewable energy generation, maintenance, and security in industries and aeronautics. Acoustic waves (AW) are a promising method for ice removal, although de‐icing mechanisms require further investigation to optimize energy efficiency.
Shilpi Pandey, Jaime del Moral, Stefan Jacob, Laura Montes, Jorge Gil‐Rostra, Alejandro Frechilla, Atefeh Karimzadeh, Victor J. Rico, Raul Kanter, Niklas Kandelin, Carmen López‐Santos, Heli Koivuluoto, Luis Angurel, Andreas Winkler, Ana Borrás, Agustin R. González‐Elipe   +15 more
wiley   +1 more source

Tecnoestresse: Tecnologia

, 2009
A tecnologia causa mudanças contínuas em nossas vidas, a cada momento acontecem substituições de sistemas em uso por sistemas mais modernos. Esse fato gera um clima de grande instabilidade nas pessoas e a necessidade constante de capacitação e orientação profissional, para que possam se adaptar às novas ferramentas do processo tecnológico. Junto com os
José Nilson de Melo, Maria Tereza Milagres Nascimento   +1 more
openaire   +2 more sources

Tribology of ZrC Coatings and Spherical Tips Acquired with Extraordinarily Stiff, Metal Atomic Force Microscopy Probes

Advanced Engineering Materials, EarlyView.
In this research, ZrC coatings are evaluated against various counterprobes at the microscale using novel super‐stiff atomic force microscopy cantilevers. The chemical composition of the coating is shown to be an important factor influencing coating hardness and Young's modulus, while surface roughness, counterprobe hardness, and surface energy are the ...
Piotr Jenczyk, Marcin Michałowski, Bogdan Warcholiński, Michał Milczarek, Adam Gilewicz   +4 more
wiley   +1 more source

Democràcia i tecnologia

Sostenible?, 2003
Democracy and politics are, and have always been, the focus of debate among specialists who often overlook the technological factors that affect certain political options. For example, the role of techno-science in shaping the existing forms of democratic representation -possibly the only feasible ones at the time they were conceived- has not been ...
openaire   +5 more sources

Enhanced Terahertz Spectroscopy of a Monolayer Transition Metal Dichalcogenide

Advanced Functional Materials, EarlyView.
An ad‐hoc engineered metallic surface is employed to perform enhanced terahertz spectroscopy of a monolayer transition metal dichalcogenide (TMD). Thanks to a local absorption boost of 104, this technique allows for the extraction of the phonon resonance features and effective permittivity of the 2D material, paving the way for the rational design of ...
Xin Jin, Vincenzo Aglieri, Young‐Gyun Jeong, Atiye Pezeshki, Lilian Skokan, Mostafa Shagar, Yuechen Jia, Pablo Bianucci, Andreas Ruediger, Emanuele Orgiu, Andrea Toma, Luca Razzari   +11 more
wiley   +1 more source

Spin‐Selective Anisotropic Magnetoresistance Driven by Chirality in DNA

Advanced Functional Materials, EarlyView.
It is shown that magnetoresistance (MR) measurements carried out as a function of angular dependence between the magnetic field and a chiral (DNA) interface provide a valuable new insight into the charge transport mechanism associated with the chiral‐induced spin selectivity (CISS) effect.
Tapan Kumar Das, Naupada Preeyanka, Suryakant Mishra, Yutao Sang, Claudio Fontanesi   +4 more
wiley   +1 more source

Mulher e tecnologia

Comunicação e Sociedade, 2001
A pesquisa é um mapeamento da situação da mulher na era das grandes tecnologias em que se vive. A intenção é mostrar a evoloção da mulher no setor produtivo da sociedade, como ser que saiu da esfera doméstica, para desempenhar um papel distinto do que lhe foi delegado ao longo da história.
Betânia Maciel de Araújo, Conceição A. Sanches, Tânia Lopes   +2 more
openaire   +3 more sources

Using Recycled Materials in a Novel Dual Binder System for Hard Carbon Anodes: Closing the Loop Toward Sustainable Li‐/Na‐ion Batteries

Advanced Functional Materials, EarlyView.
The study explores for the first time the use of polyvinyl butyral (PVB), particularly recycled PVB, as a sustainable binder for Li/Na‐based electrodes in the framework of the H2020 SUNRISE EU project. Findings revealed that electrodes bound with a sustainable PAA/PVB mixture demonstrated exceptional rate capability and high initial Coulombic ...
Hamideh Darjazi, Alessandro Piovano, Giuseppina Meligrana, Giuseppe A. Elia, Claudio Gerbaldi   +4 more
wiley   +1 more source

Chasing Charge Carriers: Diffusion Dynamics in Mixed‐n Quasi‐2D Colloidal MAPbBr3 Perovskites

Advanced Functional Materials, EarlyView.
Metal halide perovskites are noted for their tunable optical properties. Colloidal synthesis allows the formation of differently shaped perovskite nanocrystals with varying optical and carrier transport behavior. Three MAPbBr3 morphologies are characterized: nanoplatelets, nanosheets, and nanostripes.
Ronja Maria Piehler, Eugen Klein, Francisco M. Gómez‐Campos, Oliver Kühn, Rostyslav Lesyuk, Christian Klinke   +5 more
wiley   +1 more source