Results 1 to 10 of about 7,142,872 (201)

MEMS Varifocal Optical Elements for Focus Control [PDF]

open access: yesMicromachines
As microelectronic devices become more prevalent daily, miniaturization is emerging as a key trend, particularly in optical systems. Optical systems with volume scanning and imaging capabilities heavily rely on focus control. The traditional focus tuning
Chen Liu   +5 more
doaj   +4 more sources

Dynamic Beam Steering and Focusing Graphene Metasurface Mirror Based on Fermi Energy Control

open access: yesMicromachines, 2023
Beam steering technology is crucial for radio frequency and infrared telecommunication signal processing. Microelectromechanical systems (MEMS) are typically used for beam steering in infrared optics-based fields but have slow operational speeds.
Sanghyeok Yu   +3 more
doaj   +1 more source

Focus on Weed Control [PDF]

open access: yesPlant Physiology, 2014
There were many reasons for the editors to suggest that it was timely for Plant Physiology to develop a Focus issue around the topic of weed control. While this journal has published many formative papers in the past relating to weed science and herbicide mode of action, this activity has ...
Robert, Edwards, Matthew, Hannah
openaire   +2 more sources

Entomological Investigation and Detection of Dengue Virus Type 1 in Aedes (Stegomyia) albopictus (Skuse) During the 2018–2020 Outbreak in Zhejiang Province, China

open access: yesFrontiers in Cellular and Infection Microbiology, 2022
Mosquito-borne diseases are still threats to public health in the Zhejiang province of China. Surveillance of mosquitoes and the mosquito-borne pathogen is a vital approach for early warning, prevention, and control of the infectious disease.
Qinmei Liu   +12 more
doaj   +1 more source

Vector competence of Aedes aegypti and screening for differentially expressed microRNAs exposed to Zika virus

open access: yesParasites & Vectors, 2021
Background Zika virus (ZIKV) is transmitted to humans primarily by Aedes aegypti. Previous studies on Ae. aegypti from Jiegao (JG) and Mengding (MD) in Yunnan province, China have shown that these mosquitoes are able to transmit ZIKV to their offspring ...
Chunling Zhu   +11 more
doaj   +1 more source

Decisive or impulsive? Re-examining Africa’s lockdown response to COVID-19

open access: yesTropical Medicine and Health, 2022
Due to the high transmission rate and mortality index of the current coronavirus pandemic, many settings in Africa instituted lockdowns to reduce its rate of spread and avert exponential growth rate.
Aishat Jumoke Alaran   +6 more
doaj   +1 more source

Robust Feedback Zoom Tracking for Digital Video Surveillance

open access: yesSensors, 2012
Zoom tracking is an important function in video surveillance, particularly in traffic management and security monitoring. It involves keeping an object of interest in focus during the zoom operation. Zoom tracking is typically achieved by moving the zoom
Jin Wang   +4 more
doaj   +1 more source

Electron Beam Welding In-Process Control and Monitoring

open access: yesProceedings of the International Conference on Applied Innovations in IT, 2013
This work presents the results of an investigation of processes in the melting zone during Electron Beam Welding (EBW) through analysis of the secondary current in the plasma.The studies show that the spectrum of the secondary emission signal during ...
Dmitriy Trushnikov
doaj   +1 more source

Visual Performance of Two Designs of Myopia Management Soft Contact Lenses Compared with a Monofocal One in Young Adults

open access: yesJournal of Ophthalmic & Vision Research, 2023
Purpose: To compare the visual performance of two distinct types of soft contact lenses (CL) aimed at slowing down myopia progression with the performance of a monofocal soft CL. Methods: In a prospective double-masked, crossover trial, 18 myopic adults (
Isabel Signes-Soler   +4 more
doaj   +1 more source

Improving compliance: the focus of community prevention and control of hypertension

open access: yesShanghai yufang yixue, 2022
Hypertension is an important risk factor for the morbidity and mortality of cardiovascular and cerebrovascular diseases. Improving compliance is the key to the prevention and control of hypertension in community.
LU Xinyuan   +3 more
doaj   +1 more source

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