Results 61 to 70 of about 295,732 (310)

Electron density in the quiet solar coronal transition region from SoHO/SUMER measurements of S VI line radiance and opacity

, 2009
Context: The sharp temperature and density gradients in the coronal transition region are a challenge for models and observations. Aims: We set out to get linearly- and quadratically-weighted average electron densities in the region emitting the S VI ...
Avrett, Buchlin, Cargill, Curdt, Del Zanna, Dere, Dowdy, Dumont, Dupree, E. Buchlin, Gabriel, J.-C. Vial, Judge, Judge, Keenan, Klimchuk, Landi, Parenti, Pecker, Peter, Peter, Peter, Wilhelm   +22 more
core   +1 more source

Effective Screening due to Minihalos During the Epoch of Reionization [PDF]

, 2002
We show that the gaseous halos of collapsed objects introduce a substantial cumulative opacity to ionizing radiation, even after the smoothly distributed hydrogen in the intergalactic medium has been fully reionized. This opacity causes a delay of around
Abraham Loeb, Lacey C. G., Rennan Barkana   +2 more
core   +3 more sources

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

Advanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner, Ruben Maile, Murat Cuvalli, Andreas Wolf, Ayisha Komal, Robert Oestreich, Christoph Janiak, Karl Mandel, Alexander Knebel, Klaus Müller‐Buschbaum   +9 more
wiley   +1 more source

Corruption in Nigeria’s Oil and Gas Industry: Measure and Extent

PanAfrican Journal of Governance and Development
This study aims to develop a measure and ascertain the extent of corruption in Nigeria’s oil and gas industry. The opacity index approach to measuring corruption, as well as a conceptual framework that clarifies the concept of corruption and the context ...
Yusuf Musbau , Yusuf Isah Maikudi , Abubakar Sadiq Suleiman   +2 more
doaj   +1 more source

PERFORMANCE OF DIESEL ENGINE FUELLED WITH FOUR VEGETABLE OILS, PREHEATED AND AT ENGINE WORKING TEMPERATURE [PDF]

Engenharia Agrícola, 2017
With the rise of restrictions imposed by law for gases emission, several technologies both for petrodiesel (PD) or diesel engines are been applied, such as the sulfur reduction and the injection electronic command, followed of gases recirculation and/or ...
Hevandro C. Delalibera, André L. Johann, Paulo R. A. de Figueiredo, Anderson de Toledo, Pedro H. Weirich Neto, Ricardo Ralisch   +5 more
doaj   +1 more source

Photoionization and Opacity [PDF]

, 2023
Anil K. Pradhan
openalex   +1 more source

All‐in‐One Analog AI Hardware: On‐Chip Training and Inference with Conductive‐Metal‐Oxide/HfOx ReRAM Devices

Advanced Functional Materials, EarlyView.
An all‐in‐one analog AI accelerator is presented, enabling on‐chip training, weight retention, and long‐term inference acceleration. It leverages a BEOL‐integrated CMO/HfOx ReRAM array with low‐voltage operation (<1.5 V), multi‐bit capability over 32 states, low programming noise (10 nS), and near‐ideal weight transfer.
Donato Francesco Falcone, Victoria Clerico, Wooseok Choi, Tommaso Stecconi, Folkert Horst, Laura Bégon‐Lours, Matteo Galetta, Antonio La Porta, Nikhil Garg, Fabien Alibart, Bert Jan Offrein, Valeria Bragaglia   +11 more
wiley   +1 more source

Taking a Free Ride in Morphophonemic Learning

Catalan Journal of Linguistics, 2005
As language learners begin to analyze morphologically complex words, they face the problem of projecting underlying representations from the morphophonemic alternations that they observe.
John J. McCarthy
doaj   +1 more source

Mesopic conditions optimise the detection of visual function loss in drivers with simulated media opacity [PDF]

, 2022
Frederick Afum Asare, Roger S. Anderson, Pádraig J. Mulholland, Julie‐Anne Little   +3 more
openalex   +1 more source

Biodegradable and Recyclable Luminescent Mixed‐Matrix‐Membranes, Hydrogels, and Cryogels based on Nanoscale Metal‐Organic Frameworks and Biopolymers

Advanced Functional Materials, EarlyView.
The study presents biodegradable and recyclable mixed‐matrix membranes (MMMs), hydrogels, and cryogels using luminescent nanoscale metal‐organic frameworks (nMOFs) and biopolymers. These bio‐nMOF‐MMMs combine europium‐based nMOFs as probes for the status of the materials with the biopolymers agar and gelatine and present alternatives to conventional ...
Moritz Maxeiner, Julian Burkhart, Kateryna Borysova, Chiara Mazzariol, Klaus Müller‐Buschbaum   +4 more
wiley   +1 more source