Results 121 to 130 of about 423,459 (347)

The (co-)occurrence of problematic video gaming, substance use, and psychosocial problems in adolescents [PDF]

open access: yes, 2014
Aims. The current study explored the nature of problematic (addictive) video gaming and the association with game type, psychosocial health, and substance use. Methods. Data were collected using a paper and pencil survey in the classroom setting.
Allahverdipour H.   +65 more
core   +1 more source

Highly‐Emissive Organic Photovoltaics Approaching Theoretical Limit Voltage and Enabling Multifunctional Energy‐Harvesting Displays

open access: yesAdvanced Materials, EarlyView.
A highly‐emissive organic photovoltaic employs donor–acceptor pairs with alternately localized frontier molecular orbitals, preserving high triplet energies and small reorganization energies to suppress non‐radiative recombination. As a result, it exhibits a high open‐circuit voltage approaching the Shockley–Queisser limit and a high ...
Qing‐Jun Shui   +7 more
wiley   +1 more source

Cognitive deficits in problematic internet use : meta-analysis of 40 studies [PDF]

open access: yes, 2019
© The Royal College of Psychiatrists 2019. This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and ...
Chamberlain, Samuel R   +6 more
core   +2 more sources

Exploring the Potential of Zero‐Dimensional Carbon Nanomaterials in Photoluminescent, Electrochemiluminescent and Electrochemical Sensors

open access: yesAdvanced Materials Interfaces, EarlyView.
Zero‐dimensional carbon nanomaterials are presented as multifunctional platforms linking structure, property, and sensing performance. Surface engineering and heteroatom doping modulate electron‐transfer and luminescent behavior, enabling electrochemical, photoluminescent, and electrochemiluminescent detection. Fundamental design principles, analytical
Gustavo Martins   +8 more
wiley   +1 more source

Impact of smartphone addiction on health status, mental well-being, and sleep quality among medical students in Sudan

open access: yesBMC Psychiatry
Smartphone use has rapidly increased worldwide. It was estimated that worldwide use of smartphones surpassed 4.3 billion in 2023, which means 54% of the world's population now uses smartphones.
Mohammed Hammad Jaber Amin   +9 more
semanticscholar   +1 more source

A Reusable Polymeric Sensor Based on Green‐Synthesized CQDs@ZIF‐8 for the Rapid Detection of Nitro‐Explosive Picric Acid

open access: yesAdvanced Materials Interfaces, EarlyView.
This study presents the rational design and synthesis of a highly luminescent polymeric nanocomposite. Initially, highly fluorescent carbon quantum dots (CQDs) are synthesized via a facile hydrothermal method using citric acid and β‐alanine as precursors, followed by rigorous purification through centrifugation and filtration.
Yunus Emre Toprak   +2 more
wiley   +1 more source

Social Media and Consumer Culture: Addicted to the Idealized Consumer [PDF]

open access: yes, 2018
For better or for worse, social media has become party of the fabric of society. As technology and social networking sites increasingly affect the behavior and culture around us, signs of digital addiction are on the rise.
Laeder, James
core   +1 more source

Using a gamified monitoring app to change adolescents' snack intake : the development of the REWARD app and evaluation design [PDF]

open access: yes, 2016
Background: As the snacking pattern of European adolescents is of great concern, effective interventions are necessary. Till now health promotion efforts in children and adolescents have had only limited success in changing adolescents' eating patterns ...
B. Deforche   +11 more
core   +2 more sources

Flow‐Adaptive Gas Sensing Enabled Using a Uniform Au Nanosheet Sensor Array and a Neural Network Inference

open access: yesAdvanced Materials Technologies, EarlyView.
Integrated Au nanosheet sensor array enables simultaneous inference of gas concentration and flow rate via deep neural network analysis, without external flow control. ABSTRACT Gas sensor responses are considerably affected by gas flow rates, thereby inhibiting the accurate detection of target gas concentrations in variable‐flow applications such as ...
Taro Kato   +4 more
wiley   +1 more source

Smartphone use can be addictive? A case report [PDF]

open access: yes, 2016
Background and aims The use of mobile phones has become an integral part of everyday life. Young people in particular can be observed using their smartphones constantly, and they not only make or receive calls but also use different applications or just ...
Brutóczki, Zita   +3 more
core   +1 more source

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