Results 101 to 110 of about 632,269 (326)
Journal of Community Mental Health and Public Policy, 2020 Gadget use among Indonesian adolescents is becoming more prevalent. Most Indonesian families own smartphones for various uses including for accessing the internet. Gadget and internet use has sharply increased during the Covid-19 pandemic.
Susy Katikana Sebayang +6 more
doaj +1 more source
A Self‐Healing Magnetoelectric Sensor with Pain Sensing for Underwater Soft Electronics
Advanced Materials, EarlyView.This study introduces a self‐healing magnetoelectric sensory system designed for amphibious soft electronics. By utilizing liquid‐metal conductors and self‐healing elastomers, the system enables autonomous recovery from mechanical damage. Its multilayered architecture features dual self‐powered proximity and tactile sensing alongside pain sensing in ...
Xuan Zhang +6 more
wiley +1 more source
A Low-Cost Stereo Video System for Measuring Directional Wind Waves
Journal of Marine Science and Engineering, 2020 Typical oceanographic instruments are expensive, complex to build, and hard to deploy and require constant and specialized maintenance. In this paper, we present a cheap and simple technique to estimate a three-dimensional surface elevation map, η(x,y,t),
Matheus Vieira +5 more
doaj +1 more source
Advanced 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
Advanced 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
Applied Sciences, 2019 This paper presents advances in the development of specialized mobile applications for combat decision support utilizing augmented reality technologies used for the production of contextual data delivered to any tactical smartphone.
Mariusz Chmielewski +2 more
doaj +1 more source
Metals, 2020 In this article, we examine the selective hydrometallurgical extraction of gallium from pyrolyzed smartphones. Gallium-enriched pyrolysis residue originating from pyrolyzed smartphones was leached using NaOH and gaseous oxygen at elevated temperatures ...
Benedikt Flerus, Bernd Friedrich
doaj +1 more source
Translational Psychiatry, 2017 Mobile and connected devices like smartphones and wearable sensors can facilitate the collection of novel naturalistic and longitudinal data relevant to psychiatry at both the personal and population level.
J. Torous, J. Onnela, M. Keshavan
semanticscholar +1 more source
Advanced 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
The Need for Culturally-Tailored Smartphone Applications for Weight Control
Journal of the Georgia Public Health Association, 2016 Background: Approximately 35% of U.S. adults are obese, and this rate is expected to increase by almost 50% by 2030. New media such as smartphone applications (apps) provide a useful and low-cost way to disseminate weight control information.
Stephen Coughlin, Dale Hardy, Lee Caplan
doaj +1 more source