Results 1 to 10 of about 2,052,667 (295)

Erosion Simulation Test of Gravel Pack Metal Mesh Screen Pipe

open access: yesShiyou jixie, 2021
In order to avoid the erosion damage of the metal mesh screen pipe by sand particles in water source well, the post-mixed abrasive jet erosion test device was used to carry out erosion test device installation and test scheme design of gravel pack screen
Zhou Huan, Pang Mingyue
doaj  

A Spherical Actuator-Based Hand-Held Haptic Device for Touch Screen Interaction

open access: yesIEEE Access, 2019
This paper presents a spherical actuator-based hand-held device that provides lateral force feedback for user interaction with the touch screen. The spherical actuator is built around a ball containing the magnetorheological elastomer (MRE).
Dapeng Chen   +4 more
doaj   +1 more source

Screening Devices at School

open access: yesSTS Encounters, 2011
Including children with special needs in the common school has become an international political priority over the past 15-20 years. In reponse, new social technologies have emerged. This article analyses one such technology, an action plan called a SMTTE, and proposes that we understand it as a “screening device”. It is a “device” in the sense that it
openaire   +2 more sources

DisConnect: Characterisation of Screen Use and Perception of Health Problems in Students from Aveiro, Portugal – A Cross-Sectional Study

open access: yesPortuguese Journal of Public Health
Introduction: Digitalisation has made technologies an important vehicle for development and learning, especially for children and young people. However, multiple risks of excessive or inappropriate use have been described.
Fábio Sousa Gomes   +5 more
doaj   +1 more source

Media Device Use and Vision Disorders in the Pediatric Age: The State of the Art

open access: yesChildren
Introduction. Evidence is consistent with increased screen viewing time among children and adolescents, and anticipation at the age at which children interact with media devices.
Elena Bozzola   +4 more
doaj   +1 more source

Validation of the custo screen 400 ambulatory blood pressure-monitoring device according to the European Society of Hypertension International Protocol revision 2010

open access: yesVascular Health and Risk Management, 2014
Peter Bramlage,1 Cornelia Deutsch,1 Ralf Krüger,1 Andreas Wolf,2 Peter Müller,2 Thomas Zwingers,1,4 Beate Beime,1 Thomas Mengden31Institut für Pharmakologie und Präventive Medizin, Cloppenburg, 2Müller and Sebastiani, Ottobrunn ...
Bramlage P   +7 more
doaj  

Multi-Functional Micro Projection Device as Screen Substitute for Low Power Consumption Computing

open access: yesJournal of Low Power Electronics and Applications, 2012
One of the major power consuming components in a computer is its display unit. On average the screen consumes ten times more power than the DSP processor itself.
Zeev Zalevsky, Yuval Kapellner
doaj   +1 more source

A Simple Window Screen to Create Electric Discharges for Repelling and Exterminating Stable Flies and Houseflies in Cattle Barns

open access: yesAgriculture
The current study aimed to create an electrostatic window screen to keep stable flies and houseflies out of cattle barns. The screen comprised three identical framed metal nets arranged in parallel at specific intervals.
Yoshihiro Takikawa   +4 more
doaj   +1 more source

Age of first digital device use and screen media use at age 15: A cross-sectional analysis of 384,591 participants from 55 countries

open access: yesPublic Health in Practice
Objectives: We investigated the associations between age of first digital device use and screen media use at age 15. Study design and methods: Utilizing cross-sectional data from the 2018 Program for International Student Assessment, we analyzed ...
Sarah Overgaard Slater   +3 more
doaj   +1 more source

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