Investigating the role of internal layout of magnetic field-generating equipment on workers’ exposure at power substations

Hosseini, Monireh; Matin, Laleh Farhang; Monazzam, Mohammad Reza; Khosroabadi, H.

doi:10.1080/10803548.2018.1475927

Cited by 7 publications

(3 citation statements)

References 9 publications

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“…Computer vision syndrome has been documented to be dependent on screen time ( 15 , 16 ). In consistent with previous findings, our study demonstrated a moderate positive correlation between average screen time and the sum grade of computer vision syndrome.…”

Section: Discussionmentioning

confidence: 99%

Computer Vision Syndrome During SARS-CoV-2 Outbreak in University Students: A Comparison Between Online Courses and Classroom Lectures

Wang

Wei

Deng

2021

Front. Public Health

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Purpose: To compare the prevalence of computer vision syndrome in university students of different teaching modes during the SARS-CoV-2 outbreak period.Methods: A cross-sectional survey study using the validated Computer Vision Syndrome Questionnaire in Chinese medical students of Sichuan University who took classroom lectures and the same-grade foreign students from a Bachelor of Medicine and Bachelor of Surgery (MBBS) program who took online lectures with similar schedules.Results: A total of 137 responses from 63 Chinese students and 74 MBBS students were obtained. The highest frequency of digital screen time was 7-9 h (43.24%, 32/74) for MBBS students and 2-4 h (46.03%, 29/63) for Chinese students. The prevalence of computer vision syndrome among Chinese students and MBBS students were 50.79% and 74.32%, respectively (P = 0.004). The average numbers of reported symptoms were 5.00 ± 2.17 in Chinese students and 5.91 ± 1.90 in MBBS students (P = 0.01). The three most highly reported symptoms were “heavy eyelids” (53.97%), “dryness” (50.79%), and “feeling of a foreign body” (46.03%) in Chinese students and “dryness” (72.97%), “feeling of a foreign body” (62.16%), and “heavy eyelids” (58.11%) in MBBS students. The sum grades of computer vision syndrome had a moderate positive correlation with screen time (Spearman's correlation coefficient = 0.386, P < 0.001). The grades of symptoms of “feeling of a foreign body,” “heavy eyelids,” and “dryness” showed a weak positive correlation with screen time (Spearman's correlation coefficients were 0.220, 0.205, and 0.230, respectively).Conclusion: Online study may contribute to the prevalence of computer vision syndrome among university students.

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Section: Discussionmentioning

confidence: 99%

Computer Vision Syndrome During SARS-CoV-2 Outbreak in University Students: A Comparison Between Online Courses and Classroom Lectures

Wang

Wei

Deng

2021

Front. Public Health

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“…Grip strength is known as a simple, fast, reliable, and non-expensive index to evaluate the functionality of the upper extremity [ 2 – 5 ]. Moreover, grip strength has been considered as a noninvasive marker of overall muscular strength, muscle mass, nutritional status, and a predictor of cardiovascular and non-cardiovascular mortality, disability, and surgical complications [ 6 – 9 ]. Studies have shown that low handgrip strength (HGS) in children and adolescents is the sign of a poorer metabolic profile and nutritional status which on many occasions will result in obesity, low levels of fitness, and premature mortality in adulthood [ 10 – 12 ].…”

Section: Introductionmentioning

confidence: 99%

Normative data for handgrip strength in Iranian healthy children and adolescents aged 7–18 years: comparison with international norms

et al. 2021

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Background Grip strength is an essential component of physical fitness. The objective of this study was to develop normative handgrip strength data for Iranian healthy boys and girls comparing their handgrip strength with international reference values. Methods Handgrip strength was measured in 2637 healthy children/adolescents (1391 boys and 1246 girls), aged 7–18 years, using a standard adjustable Jamar hand dynamometer (Model 5030 J1, Sammons Preston Rolyan, Bolingbrook, IL, USA). Body mass (kg) and stature (cm) were measured and body mass index was computed in kg/m2. The sample was stratified by gender, age, and hand preference. Results Handgrip strength increased with age and was considerably higher in boys than in girls for all age groups (p < 0.001). Grip strength had a parallel and linear growth for both genders until the age of about 11 years and showed a steeper upward slope in boys than in girls thereafter. The findings of the current investigation were significantly different from those of the previously published normative data, especially for boys over the age of 12 years and girls in the age range of 7–18 years (p < 0.001). This difference was mainly in such a way that the Iranians had lower handgrip strength. Conclusions The differences between present results and those of similar available in the literature in this field emphasize the significant role of using normative data specific to a particular population in research or clinical settings.

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“…Existing research recognises the critical role played by the exposure of workers to electromagnetic fields [1]- [5]. At low frequency, the exposure to magnetic field has been shown to be related to adverse effects in circulation of currents within the body [6], [7].…”

Section: Introductionmentioning

confidence: 99%

A Shielding System Proposal for the Cabling of Electric Glass Melters

Canova

Quercio

2023

IEEE Open J. Ind. Applicat.

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This paper analyses the impact on workers of the electromagnetic field produced by large furnaces for glass production. The paper also propose a solution for the reduction and the containment of magnetic induction levels below the limits imposed by national and international directives. Using a threedimensional numerical calculation code based on the hypothesis of filiform conductors in the air (Biot-savart law). The choice of the solution is based on the technique named highly coupled magnetically passive loop technique (HMCPL). The solution was then implemented and a comparison between the magnetic induction values before and after the installation of the shielding solution is presented.INDEX TERMS Magnetic field pollution, shielding system.

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Investigating the role of internal layout of magnetic field-generating equipment on workers’ exposure at power substations

Abstract: The research findings revealed that the most harmonious arrangement of equipment in an industrial unit plays a major role in reducing the exposure of workers to magnetic fields and ultimately increases the level of their health in the workplace.

Cited by 7 publications

References 9 publications

Computer Vision Syndrome During SARS-CoV-2 Outbreak in University Students: A Comparison Between Online Courses and Classroom Lectures

Computer Vision Syndrome During SARS-CoV-2 Outbreak in University Students: A Comparison Between Online Courses and Classroom Lectures

Normative data for handgrip strength in Iranian healthy children and adolescents aged 7–18 years: comparison with international norms

A Shielding System Proposal for the Cabling of Electric Glass Melters

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