Results 31 to 40 of about 49,381 (294)

Novas Mídias, novas linguagens:

Kiri-Kerê - Pesquisa em Ensino, 2022
Neste artigo, pretendo apresentar algumas de minhas percepções, enquanto arte-educador da Rede Estadual de Ensino de Minas Gerais, a respeito do regime de ensino-aprendizagem à distância oferecido aos alunos e alunas das Escolas Estaduais de MG durante a pandemia de Covid-19, bem como apontar os caminhos de pesquisa-ação desenvolvidos por mim, em ...
openaire   +1 more source

Adjustment of Coatings Morphology and Particle Distribution of Layered Silicates by Freeze‐Drying for Improved Gas Barriers

Advanced Engineering Materials, EarlyView.
Freeze‐drying of layered silicate is the key to get coatings with superior gas barrier. Freeze‐drying of layered silicates modified with dodecylamine (DDA) is a highly effective technique for the preparation of barrier pigments that significantly mitigate the permeation of oxygen, water vapor, and hydrogen through polymer films containing these ...
Joshua Lommes, Moritz Bätcher, Andrea Deißenberger, Volkmar Stenzel, Andreas Hartwig   +4 more
wiley   +1 more source

Novae: An Important Source of Lithium in the Galaxy

The Astrophysical Journal
The source of the Galactic lithium (Li) has long been a puzzle. With the discovery of Li in novae, extensive research has been conducted. However, there still exists a significant disparity between the observed abundance of Li in novae and the existing ...
Jun Gao, Chunhua Zhu, Guoliang Lü, Jinlong Yu, Lin Li, Helei Liu, Sufen Guo   +6 more
doaj   +1 more source

Characterizing the Photometric Response of the ANS Collaboration Monitoring Program

Open Astronomy, 2012
the ANS Collaboration uses the UBV RCIC filters from various commercial manufacturers (Omega Optical, Custom Scientific, Schuler, Optec, Astrodon) for its ongoing photometric monitoring of symbiotic stars.
Munari U., Moretti S.
doaj   +1 more source

Very high energy gamma-ray follow-up observations of novae and dwarf novae with the MAGIC telescopes [PDF]

, 2015
In the last few years the Fermi-LAT instrument has detected GeV gamma-ray emission from several novae. Such GeV emission can be interpreted in terms of inverse Compton emission from electrons accelerated in the shock or in terms of emission from hadrons ...
Bednarek, W., Desiante, R., Hays, E., Longo, F., López-Coto, R., Sitarek, J., Wilhelmi, E. de Ona   +6 more
core   +2 more sources

Influence of an Oxygen‐Free Atmosphere on Diamond‐Single‐Grain Scratching of Ti–6Al–4V

Advanced Engineering Materials, EarlyView.
Single‐grain scratching of Ti–6Al–4V is investigated under controlled, oxygen‐free, and ambient atmospheres using a novel experimental setup with in situ high‐speed imaging. The approach enables direct observation of chip formation and adhesion under suppressed oxidation.
Berend Denkena, Benjamin Bergmann, Michael Zenger   +2 more
wiley   +1 more source

Exploring the Archives: A Search for Novae in UVIT Snapshots of M31

The Astrophysical Journal
Extensive multiwavelength studies of novae have been carried out in our galaxy and in M31 for decades. However, UV studies of extragalactic novae are limited, especially those in quiescence.
Judhajeet Basu, Krishnendu S., Sudhanshu Barway, Shatakshi Chamoli, G. C. Anupama   +4 more
doaj   +1 more source

X-ray emission from optical novae in M 31

, 2009
The first supersoft source (SSS) identification with an optical nova in M 31 was based on ROSAT observations. Twenty additional X-ray counterparts (mostly identified as SSS by their hardness ratios) were detected using archival ROSAT, XMM-Newton and ...
Darnley, Della Valle, Della Valle, Di Stefano, Drake, Greiner, Haberl, Haberl, Hachisu, Hachisu, Henze, Henze, Henze, José, Kaaret, Kong, Lee, MacDonald, Nedialkov, Ness, Orio, Osborne, Osborne, Pietsch, Pietsch, Pietsch, Pietsch, Riffeser, Sala, Sala, Shafter, Shafter, Shafter, Smirnova, Smirnova, Supper, Supper, Trudolyubov, Tuchman, Voss, Yaron, Ögelman   +41 more
core   +1 more source

Constraining the role of novae as progenitors of Type Ia Supernovae [PDF]

, 2015
(Abridged) White dwarfs (WDs) undergoing unstable nuclear burning on their surfaces, resulting in the nova phenomenon, have been considered as one of the prospective candidates for the still elusive progenitors of SNeIa.
Gilfanov, Marat, Soraisam, Monika
core   +2 more sources

Modulating Electrochemical CO2 Reduction Pathways via Interfacial Electric Field

Advanced Functional Materials, EarlyView.
Engineering interfacial electric fields in Cu/ITO electrodes enables precise control of CO2 reduction pathways. Charge transfer from Cu to ITO generates positively charged Cu species that steer selectivity from ethylene toward methane. This work demonstrates how interfacial electric‐field modulation can direct reaction intermediates and transform ...
Mahdi Salehi, Zhengyuan Gao, Sai Phani Kumar Vangala, Amirhossein Farzi, Hamed Heidarpour, Morgan McKee, Nikolay Kornienko, Ali Seifitokaldani   +7 more
wiley   +1 more source