Ultraviolet Radiation on an Urban Street with High-Rise Buildings in Asia

Hasegawa, Jun‐ya; Kumakura, Eiko; Ichinose, Masayuki

doi:10.1016/j.proenv.2017.03.142

Cited by 2 publications

(4 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Compared to the laboratory test (Figure ), the sensor did not show instant resistance reduction under the UV filter. This is because indirect UV rays reflected from grass, concrete, water, and soil , could come onto the UV sensor through a gap between the lens and the system, inducing oxygen desorption (Figure S5). This outdoor test provides clear evidence that the sensor distinguishes natural UV rays even under dynamic conditions.…”

Section: Resultsmentioning

confidence: 99%

Wearable UV Sensor Based on Carbon Nanotube-Coated Cotton Thread

Kim

Moon

Seol

et al. 2018

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

A fabric-compatible UV sensor is presented using a cellulose-based thread coated with single-wall carbon nanotube ink. Two-terminal resistive responses of the thread were measured upon exposure to UV, and the effects of intensity, wavelength, and on/off cycling were studied. The sensor was tested in the field under direct sunlight, demonstrating practical usability for a wearable/flexible UV sensor system. The results here confirm the potential for an inexpensive wearable sensor in contrast to the conventional rigid and bulky solid-state detectors.

show abstract

Section: Resultsmentioning

confidence: 99%

Wearable UV Sensor Based on Carbon Nanotube-Coated Cotton Thread

Kim

Moon

Seol

et al. 2018

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…Sky view factor. The SVF can be determined from many methods such as digital image analysis (18,32) or with the use of GIS software (17). For simplicity, we chose to use Eq.…”

Section: Methodsmentioning

confidence: 99%

“…The glass facades of buildings that reflect incoming solar UVR can potentially increase UVR at street level. Trees, grass lawns and awnings help to attenuate the reflected UVR (18). Few studies have measured solar UVR exposure in pedestrian areas and seating areas of restaurants in urban canyons (18)(19)(20)(21); and no such studies have been carried out in Africa.…”

Section: Introductionmentioning

confidence: 99%

“…Trees, grass lawns and awnings help to attenuate the reflected UVR (18). Few studies have measured solar UVR exposure in pedestrian areas and seating areas of restaurants in urban canyons (18)(19)(20)(21); and no such studies have been carried out in Africa. We measured the solar UVR exposure in urban canyons in Venice, Italy and Johannesburg, South Africa to determine and compare the effect of urban canyon types on resultant solar UVR exposures.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Comparison of Solar Ultraviolet Radiation Exposure in Urban Canyons in Venice, Italy and Johannesburg, South Africa

Wright

Preez

Martincigh

et al. 2020

Photochem & Photobiology

View full text Add to dashboard Cite

Urban environments can have high‐risk spaces that can provide excess personal sun exposure, such as urban or street canyons, and the spaces between buildings, among others. In these urban spaces, sun exposure can be high or low depending on several factors. Polysulphone film (PSF) was used to assess possible daily solar ultraviolet radiation (UVR) exposure in urban canyons in Venice, Italy and, for the first time in Africa, in Johannesburg, South Africa. The photodegradation of PSF upon solar exposure was monitored at a wavelength of 330 nm by ultraviolet‐visible spectrophotometry, and the resultant change was converted to standard erythemal dose (SED) units (1 SED = 100 J m−2). Mean daily ambient solar UVR exposure measured for Venice and Johannesburg ranged between 20–28 SED and 33–43 SED, respectively. Canyon‐located PSF exposures were lower in Venice (1–9 SED) than those in Johannesburg (9–39 SED), depending mainly on the sky view factor and orientation to the sun. There was large variation in solar UVR exposure levels in different urban canyons. These preliminary results should be bolstered with additional studies for a better understanding of excess personal exposure risk in urban areas, especially in Africa.

show abstract

Ultraviolet Radiation on an Urban Street with High-Rise Buildings in Asia

Cited by 2 publications

References 6 publications

Wearable UV Sensor Based on Carbon Nanotube-Coated Cotton Thread

Wearable UV Sensor Based on Carbon Nanotube-Coated Cotton Thread

A Comparison of Solar Ultraviolet Radiation Exposure in Urban Canyons in Venice, Italy and Johannesburg, South Africa

Contact Info

Product

Resources

About