scholarly journals Outdoor daylight exposure and longer sleep promote wellbeing under COVID‐19 mandated restrictions

2021 ◽  
Author(s):  
Maria Korman ◽  
Vadim Tkachev ◽  
Cátia Reis ◽  
Yoko Komada ◽  
Shingo Kitamura ◽  
...  
Keyword(s):  
Daylight Exposure

A STUDY ON PREVALENT FACTORS BEHIND EFFICIENCY DETERIORATION OF A TYPICAL LOW POWER SOLAR PANEL

2013 ◽  
Vol 2013 (1) ◽  
pp. 000384-000388
Author(s):  
V. Ganescu ◽  
A. Pascu
Keyword(s):  
Low Power ◽  
Operating Conditions ◽  
Extreme Temperatures ◽  
Solar Panels ◽  
Cycle Number ◽  
Solar Noon ◽  
Operation Duration ◽  
Outdoor Behavior ◽  
Duration Of Operation ◽  
Daylight Exposure

Efficiencies for a number of different low power (10W MAX) consumer grade PV solar panels were studied in this research. Outdoor behavior was contrasted with lab environment simulations. The authors focused on four parameters: extreme temperatures of operation, duration of operation per “on” cycle, number of “on – off” cycles and overall period of “on” operation for a 365 days interval. Standard environmental operating conditions were taken into account for the lab environment, where constant solar noon was simulated for 70% of the equivalent daylight exposure time. No CPV or lenses were used. Additionally, a comparison surrounding the estimated life expectancy and efficiency decrease pattern of the panels was targeted and presented in this study.

scholarly journals Impact of window views on recovery—an example of post-cesarean section women

2019 ◽  
Vol 31 (10) ◽  
pp. 798-803
Author(s):  
Chia-Hui Wang ◽  
Nai-Wen Kuo ◽  
Kathryn Anthony
Keyword(s):  
Cesarean Section ◽  
Urban Landscape ◽  
Brief Pain Inventory ◽  
Well Being ◽  
Taipei City ◽  
Perceived Pain ◽  
Tertiary Hospitals ◽  
Visual Impacts ◽  
Daylight Exposure ◽  
The Impact

Abstract Objective The objective of this study was to examine the impact of urban landscape from window views on quality of care for women who underwent Cesarean Section (C-section) in Taiwan. Design The participants were randomly assigned into 46 different hospital rooms to see the effects of various window views and daylight exposure on women’s recovery from post C-section care. Setting We carried out this study in the obstetrics departments of three tertiary hospitals located in two major cities of Taiwan: Taipei City and New Taipei City. Participants A total of 296 women who underwent C-sections and used patient-controlled analgesic (PCA) for pain control after their surgery during the 10-month data collection period were recruited for this study. Intervention The 46 different patient rooms provided diverse window views and different daylight exposure for the participants. Main Outcome Measures Recovery for the women who underwent C-sections in this study was defined as PCA usage and perceived pain measured by Brief Pain Inventory (BFI). Results Higher satisfaction of window view significantly decreased analgesic usage (P = 0.057), reduced the scores of overall perceived pain (P = 0.046), pain severity (P = 0.004), and ‘pain’s interference with relations with others, enjoyment of life, and mood (REM).’ (P = 0.095). Conclusions To maximize benefit and well-being of patients recovering from surgery, health care architects should design patient rooms to create maximum satisfaction with visual impacts and optimize window views. By doing so, it may decrease the use of pain medication and substantially reduce healthcare costs.

FLAVOR AND SHELF LIFE OF FLUID MILK1,2

1974 ◽  
Vol 37 (6) ◽  
pp. 346-349 ◽  
Author(s):  
Sidney E. Barnard
Keyword(s):  
Shelf Life ◽  
Raw Milk ◽  
Milk Composition ◽  
Hot Water ◽  
Fluorescent Light ◽  
Key Factors ◽  
Good Taste ◽  
Flavor Development ◽  
Quality Programs ◽  
Daylight Exposure

Today's consumer determines the acceptance of milk by flavor and shelf life. Rancid, oxidized, and strong feed tastes of raw milk need to be eliminated. To prevent rancid and psychrotrophic flavor development, milk should be processed within 24 h of collection. Hot water sterilization of processing and filling equipment is essential. Product temperatures below 40 F at the filler extend shelf life. Proper handling during delivery and in stores is necessary to maintain good taste and keeping quality. Temperatures below 40 F, minimal fluorescent light and daylight exposure, and proper rotation are the key factors. Containers vary in their ability to protect the flavor and change in milk composition. Holding quality programs of 14 days at 45 F should be adopted by industry. Ten-day coding or open dating should be practiced by all processors. Regulatory agencies need to permit tests which will indicate shelf life. More emphasis must be placed on factors which determine consumer acceptability. These are flavor and shelf life.

Mathematical model quantifies multiple daylight exposure and burial events for rock surfaces using luminescence dating

2015 ◽  
Vol 81 ◽  
pp. 16-22 ◽  
Author(s):  
Trine Freiesleben ◽  
Reza Sohbati ◽  
Andrew Murray ◽  
Mayank Jain ◽  
Sahar al Khasawneh ◽  
...  
Keyword(s):  
Mathematical Model ◽  
Luminescence Dating ◽  
Daylight Exposure

scholarly journals Assessing the impact of daylight exposure on sleep quality of people over 65 years old

2020 ◽  
Vol 41 (2) ◽  
pp. 183-192
Author(s):  
Lorna Flores-Villa ◽  
Jemima Unwin ◽  
Peter Raynham
Keyword(s):  
Sleep Quality ◽  
Elderly Population ◽  
The Elderly ◽  
Physical Activities ◽  
Sleep Disruption ◽  
Poor Sleep ◽  
Ageing Population ◽  
Poor Sleep Quality ◽  
Daylight Exposure ◽  
The Impact

Due to our social behaviours, people spend at least 80% of their time indoors, mostly under artificial light. In research and building design, daylight is considered a valuable asset because it is the primary source of free, good quality light and it is suggested that it has a positive influence on human performance, health and sleep quality. There is a tendency in the population for increasingly poor sleep quality with age, and this affects at least 50% of the elderly population. Research on sleep disruption has found that especially in the elderly population, interrupted sleep can affect alertness, cognitive performance and mood. This increases the risk of falls, increases fatigue and reduces some other mental functions. Exposure to daylight (indoors and outdoors) is expected to reduce sleep disruption. Physical activities and sleep quality were assessed using 32 participants living independently in the UK, aged between 65 and 95 years old. The study was divided into two seasons due to a considerable difference in daylight availability in summer and winter. In each season participants completed the Pittsburgh Sleep Quality Index (PSQI) questionnaire, Morningness–Eveningness Questionnaire (MEQ) and a seven-day sleep diary/log activity; where time spent outdoors was identified. It was expected that participants who reported less exposure to daylight during summer and winter would report worse sleep quality. However, this was not the case; subjective sleep quality did not differ greatly between summer and winter, even though exposure to daylight varies greatly between seasons. This study explores the relationship between exposure to daylight throughout two different seasons and people’s chronotypes, physical activities and sleep quality (between and within participants). This information is essential to find means of supporting an ageing population. Practical applications: In the built environment, daylight is an important feature to consider for the occupant’s health and wellbeing. This research provides real-world insight into the amount of daylight that active aged people are exposed to during two seasons in London, and how this could impact their overall sleep quality. The findings suggest that exposure to daylight could benefit people over 65 years old with poor sleep quality by reducing the number of awakenings during the night. This research provides a step towards understanding how daylight exposure effects people, and can be used to inform housing design for the ageing population.

scholarly journals The Calculated Circadian Effects of Light Exposure from Commuting

2021 ◽  
Vol 11 (24) ◽  
pp. 11846
Author(s):  
Yihan Lu ◽  
Wenye Hu ◽  
Wendy Davis
Keyword(s):  
Circadian Rhythms ◽  
Light Exposure ◽  
Weather Conditions ◽  
Health Problems ◽  
Spectral Irradiance ◽  
Metropolitan Region ◽  
Circadian Regulation ◽  
Lighting Conditions ◽  
Indoor Lighting ◽  
Daylight Exposure

Light entrains human circadian rhythms, but increased time spent indoors and decreased daylight exposure may disrupt human circadian regulation and cause health problems. Much research is focused on improving indoor lighting conditions to minimize the adverse circadian impact of electric lights, and few studies investigate the circadian impact of daylight during the incidental time that people spend outdoors. For instance, when people commute from home to work, they are exposed to daylight. The purpose of this study is to investigate daylight’s impact on commuters’ circadian rhythms. Measurements of the illuminance and the spectral irradiance distribution (SID) of daylight were taken for three modes of commuting: driving, riding on trains, and walking; and under different weather conditions, on different days, and at different locations throughout the summer and autumn in the Sydney metropolitan region in Australia. With the SID data, three metrics were calculated to estimate the circadian impacts: α-opic irradiance, circadian stimulus (CS), and equivalent melanopic lux (EML). The results suggest that driving or walking on sunny or cloudy days and riding trains on sunny days are beneficial for the commuters’ circadian synchronization.

scholarly journals Daylight exposure modulates bacterial communities associated with household dust

Microbiome ◽  
2018 ◽  
Vol 6 (1) ◽  
Author(s):  
Ashkaan K. Fahimipour ◽  
Erica M. Hartmann ◽  
Andrew Siemens ◽  
Jeff Kline ◽  
David A. Levin ◽  
...  
Keyword(s):  
Bacterial Communities ◽  
Household Dust ◽  
Daylight Exposure
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