Results 41 to 50 of about 2,701,407 (295)

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

Single‐Crystalline Lateral p‐SnS/n‐SnSe van der Waals Heterostructures by Vapor Transport Growth with In Situ Bi Doping

Advanced Functional Materials, EarlyView.
In‐situ doping during growth of SnSe and subsequent attachment of SnS produces high‐quality lateral pn‐heterojunctions between van der Waals semiconductors. Electron beam induced current measurements demonstrate electrically active pn‐junctions, paving the way for devices that harness charge separation at lateral interfaces in layered heterostructures.
Peter Sutter, Valerio Piazza, Pramod Ghimire, Anna Fontcuberta i Morral, Eli Sutter   +4 more
wiley   +1 more source

From Single Atoms to Nanoparticles: Pathways Toward Efficient and Durable Pt/TiO2 Photocatalysts

Advanced Functional Materials, EarlyView.
Platinum single atoms on TiO2 nanosheets evolve into clusters and nanoparticles under ethanol photoreforming and thermal treatments. By controlling deposition and post‐treatments, particle size and location on specific facets are modulated. The study reveals how stability pathways determine efficiency, guiding the design of more durable photocatalysts.
Juan José Delgado, Enqi Bu, Yaning Han, Carlos López‐Cartes, Mónica Calatayud, Huiyan Pan, Xiaowei Chen   +6 more
wiley   +1 more source

Modelling the nova rate in galaxies

, 2003
We compute theoretical nova rates as well as type Ia SN rates in galaxies of different morphological type (Milky Way, ellipticals and irregulars) by means of detailed chemical evolution models, and compare them with the most recent observations. The main
A. Pipino, A. Renda, Arimoto, Arp, Bath, Calura, Canal, Cappellaro, Chiappini, Chiappini, Cohen, D'Antona, Della Valle, Della Valle, Della Valle, Della Valle, Della Valle, Della Valle, F. Matteucci, Ford, Furhmann, Gehrz, Gerritsen, Gomez-Gomar, Gratton, Greggio, Hill, Hubble, Jimenez, Jose, Kennicutt, Kennicutt, Larson, M. Della Valle, Madau, Martin, Matteucci, Matteucci, Matteucci, Matteucci, Matteucci, Matteucci, Matteucci, Matteucci, Matteucci, Nomoto, Pagel, Pipino, Pritchet, Reid, Ritter, Romano, Romano, Rosino, Russell, Scalo, Shafter, Shafter, Shara, Shara, Shara, van den Bergh, van der Hulst, Worthey, Yungelson   +64 more
core   +1 more source

Novas tecnologias, novas competências [PDF]

Educar em Revista, 2008
O texto aborda a relação dos jovens e adolescentes com tecnologias, nem "novas" nem "velhas", e sim instrumentos para informar e comunicar, divertir, auxiliar nos trabalhos escolares. Apesar de reconhecer a familiaridade dessa geração com o que há de mais avançado em termos de tecnologia, aponta a necessidade de se compreender a complexidade desse novo
openaire   +2 more sources

Three‐Dimensional Hierarchical Nanowire‐Networks with Deep‐Focus Tolerance and Adhesion Robustness for Harsh‐Environment SERS Sensing

Advanced Functional Materials, EarlyView.
A 3D nanowire‐network SERS substrate with robust adhesion is developed, featuring pronounced z‐direction optical activity, ultralow detection limit (1.5 × 10−13 M), and excellent signal uniformity (RSD < 10%). Enabled by enhanced light scattering, increased optical density of states, and structural reinforcement, the substrate demonstrates stable, high‐
Jinglai Duan, Wentao Wang, Xiu Liang, Yongliang Zhang, Jie Liu, Yu Bai, Dangyuan Lei   +6 more
wiley   +1 more source

Estaciones de trabajo multi-asiento Multiseat workstations

Revista Cubana de Ciencias Informáticas, 2012
Con el desarrollo actual de los dispositivos de hardware los sistemas operativos modernos ejecutan simultáneamente un gran número de operaciones sin disminuir su rendimiento.
Yunier Soler Franco, Daniel Hernandez Bahr   +1 more
doaj  

Mapping Our Digital Menagerie: A Monster Manual for the Megadungeon

magazén, 2023
Relying on a comparison between the complex spatial organization of our current digital ecosystem and the ones from dungeons in role-playing games, this article analyzes the multiple entities that populate our computers, smartphones and video game ...
Nova, Nicolas
doaj   +1 more source

Introduction pages, Nova Geodesia 3(4), 2023

Nova Geodesia, 2023
Nova Geodesia (https://novageodesia.ro), Issue 4, Volume 3, 2023: The papers published in this issue represent interesting novelties in different topics of geodetic science or related fields.
Paul SESTRAS
doaj   +1 more source

Multipurpose Transparent Nanocomposites for Gamma Spectroscopy, Pulse Shape Discrimination, Thermal Neutron Detection, Radiation Shielding, and High Refractive Index Applications

Advanced Functional Materials, EarlyView.
Materials exist that are useful for gamma scintillation, radiation shielding, neutron‐gamma pulse shape discrimination (PSD), thermal neutron detection, or high refractive index applications. While certain materials have exhibited optimal performance for each of these applications, none achieve multiple functions.
Isabelle Winardi, Stephane Miaule, Robert Carmichael, Bowen Sun, Ziqing Han, Prabhav Surabhi, Zhen Luo, Noelan Hum, David Prout, Yi‐An Chen, Ting‐Hsuan Wu, Hao Yu, Arion Chatziioannou, Qibing Pei   +13 more
wiley   +1 more source