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Phys Med 2021 Apr 9;84:50-55. Epub 2021 Apr 9.

Radiological Sciences Department, Rio de Janeiro State University (UERJ), Rio de Janeiro, Brazil.

Purpose: Fricke dosimetry has shown great potential in the direct measurement of the absolute absorbed dose for Ir sources used in HDR brachytherapy. This work describes the determination of the correction factors necessary to convert the absorbed dose in the Fricke solution to the absorbed dose to water.

Methods: The experimental setup for Fricke irradiation using a Ir source was simulated. Read More

Methods 2021 Apr 9. Epub 2021 Apr 9.

Fraunhofer Singapore, Singapore, 639798.

Situation awareness (SA) has received much attention in recent years because of its importance for operators of dynamic systems. Electroencephalography (EEG) can be used to measure mental states of operators related to SA. However, cross-subject EEG-based SA recognition is a critical challenge, as data distributions of different subjects vary significantly. Read More

Neurotherapeutics 2021 Apr 12. Epub 2021 Apr 12.

Mayo Center for Sleep Medicine, Rochester, Minnesota, USA.

Circadian rhythms oscillate throughout a 24-h period and impact many physiological processes and aspects of daily life, including feeding behaviors, regulation of the sleep-wake cycle, and metabolic homeostasis. Misalignment between the endogenous biological clock and exogenous light-dark cycle can cause significant distress and dysfunction, and treatment aims for resynchronization with the external clock and environment. This article begins with a brief historical context of progress in the understanding of circadian rhythms, and then provides an overview of circadian neurobiology and the endogenous molecular clock. Read More

JMIR Aging 2021 Apr 12;4(2):e26875. Epub 2021 Apr 12.

Centre for eHealth and Wellbeing Research, Department of Psychology, Health & Technology, University of Twente, Enschede, Netherlands.

Background: Due to a growing shortage in residential care, people with dementia will increasingly be encouraged to live at home for longer. Although people with dementia prefer extended independent living, this also puts more pressure on both their informal and formal care networks. To support (in)formal caregivers of people with dementia, there is growing interest in unobtrusive contactless in-home monitoring technologies that allow caregivers to remotely monitor the lifestyle, health, and safety of their care recipients. Read More

Behav Sleep Med 2021 Apr 12:1-17. Epub 2021 Apr 12.

Faculty of Health Disciplines, Athabasca University, Alberta, Canada.

The purpose of this qualitative study was to explore working men's perspectives about sleep health and the intersecting influences of gender and work, describing participant's views on current and potential programming and organizational support to promote sleep health. Twenty men employed in male-dominated industries in the north-central region of Alberta, Canada, participated in 4 consultation group discussions addressing motivators, facilitators and barriers to sleep health. Participants reported sleeping an average of 6. Read More