Results 91 to 100 of about 1,771,926 (270)

Alcohol Misuse Among Young Adults in Northern Italy

Safety, 2019
Purpose: To estimate the prevalence of heavy episodic drinking (HED), consumption patterns, protective and risk behaviours and motivations in a sample of young Italians with recent alcohol use. Design: Cross-sectional study.
Raimondo Maria Pavarin
doaj   +1 more source

Removing Homocoupling Defects in Alkoxy/Alkyl‐PBTTT Enhances Polymer:Fullerene Co‐Crystal Formation and Stability

Advanced Functional Materials, EarlyView.
PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu, Jochen Vanderspikken, Paola Mantegazza, Stefania Moro, Mouna Hamid, Sigurd Mertens, Niko Van den Brande, Laurence Lutsen, Vincent Lemaur, David Beljonne, Giovanni Costantini, Koen Vandewal, Bruno Van Mele, Wouter Maes, Bart Goderis   +14 more
wiley   +1 more source

Review: Cleveland-Innes, M. F., & Garrison, D. R. (Eds.), (2021). An introduction to distance education: Understanding teaching and learning in a new era (2nd ed.). New York, N.Y.: Routledge.

Journal of Learning for Development, 2021
Book Review: An introduction to distance education: Understanding teaching and learning in a new era. M.F.Cleveland-Innes & D.R.Garrison (Eds.).
David Porter
doaj  

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

2D Multifunctional Spin‐Orbit Coupled Dirac Nodal Line Materials

Advanced Functional Materials, EarlyView.
A total of 473 nonmagnetic and antiferromagnetic 2D spin‐orbit coupled Dirac nodal line materials are screened, spanning 5 layer groups and 12 magnetic space groups. Furthermore, it integrates their topological properties with electride, multiferroic, and magnetic characteristics, revealing unique systems with expanded functionalities and promising ...
Weizhen Meng, Ying Liu, Jialin Gong, Yalong Jiao, Xiaoming Zhang, Wenxian Li, Zhenxiang Cheng, Tie Yang   +7 more
wiley   +1 more source

The Discrete Process of Storage with Two Priority Classes

Communications, 2000
This paper is devoted to a specific model of the discrete process of storage with two priority classes. Every priority class of the elements is formed by independent Poisson distributed incoming streams of the elements.
Julius Rebo
doaj   +1 more source

Demonstration of an All‐Optical AND Gate Mediated by Photochromic Molecules

Advanced Functional Materials, EarlyView.
A logic AND gate that runs on photons is demonstrated. It relies on two spatially separated photochromic molecules that work in tandem. Abstract The realization of a photonic logic AND gate, i.e. a logic AND gate that runs on photons rather than electrons, and where all steps are controlled by light, is demonstrated. In a proof‐of‐principle experiment,
Heyou Zhang, Max Gießübel, Pankaj Dharpure, Andrea Albert, Vira Niestierkina, Paul Mulvaney, Mukundan Thelakkat, Jürgen Köhler   +7 more
wiley   +1 more source

Band Alignment in In‐Oxo Metal Porphyrin SURMOF Heterojunctions

Advanced Functional Materials, EarlyView.
Porphyrin core metalation in indium‑oxo SURMOFs enables systematic tuning of band edge positions without altering the crystal structure. First‑principles calculations reveal type‑I and type‑II heterostructures as well as multi‑junction energy cascades, establishing a modular strategy for exciton funneling and charge separation in optoelectronic ...
Puja Singhvi, Nina Vankova, Thomas Heine
wiley   +1 more source

Burnout Among Saudi Radiographers

Risk Management and Healthcare Policy
Kamal Dahan Alsultan,1 Moawia Gameraddin,1,2 Sultan Talal,1 Mohammad Osama Alhujaili,1 Sultan Abdulwadoud Alshoabi,1 Suliman Salih,3 Bushra HA Abdelmalik,4 Fahad H Alhazmi,1 Awadia Gareeballah,1 Abdulmannan Mohamed Aman5 1Department of Diagnostic ...
Alsultan KD, Gameraddin M, Talal S, Alhujaili MO, Alshoabi SA, Salih S, Abdelmalik BH, Alhazmi FH, Gareeballah A, Aman AM   +9 more
doaj  

The Logarithm Model of Development Power: A Tool to Analyze the Motivity of Economic Growth [PDF]

After the discussions to exponential and power model [F. Dai, 2005], this paper points out there are three kinds of basic modes in the macroeconomic process, i.e., the exponential, power and logarithm mode, and discusses the logarithm model of ...
Feng Dai, Hui Liu, Zifu Qin
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