scholarly journals Investigating primary preservice teachers’ ultraviolet radiation awareness and perceived ability to teach sun safety

2020 ◽  
Author(s):  
Joseph J. Scott ◽  
Robyn Johnston ◽  
Sally Blane ◽  
Mark Strickland ◽  
Jill Darby ◽  
...  
Keyword(s):  
Preservice Teachers ◽  
Ultraviolet Radiation ◽  
Sun Safety ◽  
Perceived Ability ◽  
Radiation Awareness

Solar Ultraviolet Radiation Exposure among Outdoor Workers in Three Canadian Provinces

2019 ◽  
Vol 63 (6) ◽  
pp. 679-688 ◽  
Author(s):  
Cheryl E Peters ◽  
Elena Pasko ◽  
Peter Strahlendorf ◽  
Dorothy Linn Holness ◽  
Thomas Tenkate
Keyword(s):  
British Columbia ◽  
Ultraviolet Radiation ◽  
Linear Models ◽  
Late Summer ◽  
Solar Ultraviolet Radiation ◽  
Sun Safety ◽  
Outdoor Workers ◽  
Exposure Limit ◽  
Canadian Provinces ◽  
Solar Ultraviolet

AbstractIntroductionSolar ultraviolet radiation (UVR) exposure places outdoor workers at risk of skin cancer and exposure is difficult to control. In response, the Sun Safety at Work Canada (SSAWC) project was undertaken (2014–2016). The purpose of this substudy was to characterize the UVR exposure levels of outdoor workers in the SSAWC project.MethodsThirteen workplaces in the provinces of British Columbia, Ontario, and Nova Scotia participated in an exposure monitoring campaign (late summer/early fall 2016). Study participants were workers from power utilities and municipalities. Participants wore a UVR measurement badge (light-sensitive polysulfone plastic) on their wrist, shoulder, or hardhat. Badge calibration and absorbance measurements were performed in the AusSun Research Lab. Personal UVR doses are presented as standard erythemal doses (SED) and compared with the internationally recommended exposure limit (1.3 SED), as well as to the total available UVR by date. Generalized linear models were used to examine determinants of solar UVR for personal UVR dose (for both SED and percent of ambient UVR). Models considered badge placement, date, province, industry, main job task, and the hours spent outdoors.ResultsMean personal UVR dose of participating workers was 6.1 SED (nearly 5× the recommended limit). Just 14% of workers experienced ‘acceptable’ levels of solar radiation; 10% were exposed at >10 times the limit. In univariate analyses, workers in Ontario had the highest levels (mean 7.3 SED), but even in the lowest exposed province (British Columbia), the mean personal UVR dose was 4.5 SED. Utility workers had double the exposure of municipal workers (10.4 and 5.5 SED, respectively). In the determinants of exposure models, the differences by province were muted, but utility line workers and those in general maintenance had higher predicted exposures. Those who wore their badge on their hardhat also had higher values of SED in the fully adjusted determinants models.ConclusionsSolar ultraviolet overexposure among outdoor workers is a concern, even in a country like Canada with relatively low ambient UVR. Implementation of sun safety programs should be supported in an effort to reduce exposure in this vulnerable group of workers.

scholarly journals Health Risks Associated With Excessive Exposure to Solar Ultraviolet Radiation Among Outdoor Workers in South Africa: An Overview

2021 ◽  
Vol 9 ◽  
Author(s):  
Caradee Y. Wright ◽  
Mary Norval
Keyword(s):  
South Africa ◽  
Ultraviolet Radiation ◽  
Health Risks ◽  
Health Hazard ◽  
Health Issues ◽  
Solar Ultraviolet Radiation ◽  
Sun Safety ◽  
Outdoor Workers ◽  
Managerial Support ◽  
Solar Ultraviolet

Exposure of outdoor workers to high levels of solar ultraviolet radiation (UVR) poses significant, well-known health risks including skin cancer and eye diseases. In South Africa, little is known about how many workers are potentially overexposed to solar UVR and what the associated impacts on their health might be. In this overview, the geography and solar UVR environment in South Africa are considered, as well as the different outdoor occupational groups likely to be affected by excessive solar UVR exposure. Sunburn, pterygium, cataract, keratinocyte cancers, and melanoma are discussed in the context of outdoor workers. Few studies in South Africa have considered these health issues and the most effective ways to reduce solar UVR exposure for those working outside. Several countries have developed policies and guidelines to support sun safety in the workplace which include training and education, in addition to the provision of personal protective equipment and managerial support. Several gaps in occupational sun protection and workplace sun safety for South Africa are identified. Legislation needs to recognize solar UVR exposure as an occupational health hazard, with sun safety guidelines and training provided for employers and employees.

scholarly journals Targeted Teacher Education to Improve Primary Preservice Teachers’ Knowledge and Understanding of UV and Effective Sun Teachers’ Knowledge and Understanding of UV and Effective Sun Protection Measures for Children Protection Measures for Children

2021 ◽  
Vol 46 (3) ◽  
pp. 53-73
Author(s):  
Joseph J. Scott ◽  
◽  
Robyn S. Johnston ◽  
Natasha Bear ◽  
Sonia Gregory ◽  
...  
Keyword(s):  
Preservice Teachers ◽  
Preservice Teacher ◽  
Sun Protection ◽  
Safety Education ◽  
Sun Safety ◽  
Protection Measures ◽  
Post Test ◽  
Safety Intervention ◽  
Short Intervention ◽  
Protective Behaviours

Teachers are responsible for children at school during peak ultraviolet (UV)times of the day. It is paramount that teachers have knowledge and understanding of UV to effectively protect themselves and their students.The aim of this pilot study was to investigate the effect of a short intervention on preservice teachers’ sun protective behaviours,knowledge and perceived skill to teach sun safety.Participants (n =161; median age=20 years) attended a45-minute preservice teacher sun safety intervention and completed pre-and post-test surveys.Post-intervention, most participants indicated they felt: i) more informed about the dangers of UV and risks of developing skin cancer (93.3%); ii) more knowledgeable about the importance of sun protection (92%); and iii) more skilled to teach sun safety (87.4%). Our findings indicate that the targeted preservice teacher sun safety education intervention improved understandings of UV,effective sun-protective practices,and their perceived skills to teach sun safety.

Applications of Photoelectron Microscopy

1976 ◽  
Vol 34 ◽  
pp. 506-507
Author(s):  
William J. Baxter
Keyword(s):  
Electron Microscopy ◽  
Thermal Decomposition ◽  
Chemical Composition ◽  
Ultraviolet Radiation ◽  
Thin Layer ◽  
Edge Effects ◽  
Electron Optics ◽  
Surface Layers ◽  
Crystalline Orientation ◽  
Fluorescent Screen

In this form of electron microscopy, photoelectrons emitted from a metal by ultraviolet radiation are accelerated and imaged onto a fluorescent screen by conventional electron optics. image contrast is determined by spatial variations in the intensity of the photoemission. The dominant source of contrast is due to changes in the photoelectric work function, between surfaces of different crystalline orientation, or different chemical composition. Topographical variations produce a relatively weak contrast due to shadowing and edge effects.Since the photoelectrons originate from the surface layers (e.g. ∼5-10 nm for metals), photoelectron microscopy is surface sensitive. Thus to see the microstructure of a metal the thin layer (∼3 nm) of surface oxide must be removed, either by ion bombardment or by thermal decomposition in the vacuum of the microscope.

803: Interactions Between Ultraviolet Radiation and Polymorphisms in the Vitamin D Receptor Gene Mediate Prostate Cancer Susceptibility

2006 ◽  
Vol 175 (4S) ◽  
pp. 260-260
Author(s):  
Nicholas J. Rukin ◽  
Samuel J. Moon ◽  
Dhaval Bodiwala ◽  
Christopher J. Luscombe ◽  
Mark F. Saxby ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Vitamin D ◽  
Ultraviolet Radiation ◽  
Vitamin D Receptor ◽  
Cancer Susceptibility ◽  
Receptor Gene ◽  
Vitamin D Receptor Gene ◽  
Prostate Cancer Susceptibility

An Adapted Measure of Teacher Self-Efficacy for Preservice Teachers: Exploring its Validity Across two Countries

2014 ◽  
Vol 28 (3) ◽  
pp. 83-92 ◽  
Author(s):  
Franziska Pfitzner-Eden ◽  
Felicitas Thiel ◽  
Jenny Horsley
Keyword(s):  
Preservice Teachers ◽  
Self Efficacy ◽  
Confirmatory Factor Analyses ◽  
3 Dimensional ◽  
Multiple Group ◽  
Three Samples ◽  
Confirmatory Factor ◽  
Teacher Self Efficacy ◽  
Dimensional Assessment ◽  
Metric Measurement

Teacher self-efficacy (TSE) is an important construct in the prediction of positive student and teacher outcomes. However, problems with its measurement have persisted, often through confounding TSE with other constructs. This research introduces an adapted TSE instrument for preservice teachers, which is closely aligned with self-efficacy experts' recommendations for measuring self-efficacy, and based on a widely used measure of TSE. We provide first evidence of construct validity for this instrument. Participants were 851 preservice teachers in three samples from Germany and New Zealand. Results of the multiple-group confirmatory factor analyses showed a uniform 3-factor solution for all samples, metric measurement invariance, and a consistent and moderate correlation between TSE and a measure of general self-efficacy across all samples. Despite limitations to this study, there is some first evidence that this measure allows for a valid 3-dimensional assessment of TSE in preservice teachers.

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