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RISS 인기검색어
- 검색키워드
- 저자 : Muhammad Arshad Awan (검색결과 4 건)
- 무료
- 기관 내 무료
- 유료
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Biomonitoring of Toxic Effects of Pesticides in Occupationally Exposed Individuals
Arshad, Muhammad,Siddiqa, Maryam,Rashid, Saddaf,Hashmi, Imran,Awan, Muhammad Ali,Ali, Muhammad Arif Occupational Safety and Health Research Institute 2016 Safety and health at work Vol.7 No.2
Background: Workers in pesticide manufacturing industries are constantly exposed to pesticides. Genetic biomonitoring provides an early identification of potential cancer and genetic diseases in exposed populations. The objectives of this biomonitoring study were to assess DNA damage through comet assay in blood samples collected from industry workers and compare these results with those of classical analytical techniques used for complete blood count analysis. Methods: Samples from controls (n = 20) and exposed workers (n = 38) from an industrial area in Multan, Pakistan, were subjected to various tests. Malathion residues in blood samples were measured by gas chromatography. Results: The exposed workers who were employed in the pesticide manufacturing industry for a longer period (i.e., 13-25 years) had significantly higher DNA tail length ($7.04{\mu}m$) than the controls ($0.94{\mu}m$). Workers in the exposed group also had higher white blood cell and red blood cell counts, and lower levels of mean corpuscular hemoglobin (MCH), MCH concentration, and mean corpuscular volume in comparison with normal levels for these parameters. Malathion was not detected in the control group. However, in the exposed group, 72% of whole blood samples had malathion with a mean value of 0.14 mg/L (range 0.01-0.31 mg/L). Conclusion: We found a strong correlation ($R^2=0.91$) between DNA damage in terms of tail length and malathion concentration in blood. Intensive efforts and trainings are thus required to build awareness about safety practices and to change industrial workers' attitude to prevent harmful environmental and anthropogenic effects.
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Biomonitoring of Toxic Effects of Pesticides in Occupationally Exposed Individuals
Muhammad Arshad,Maryam Siddiqa,Saddaf Rashid,Imran Hashmi,Muhammad Ali Awan,Muhammad Arif Ali 한국산업안전보건공단 산업안전보건연구원 2016 Safety and health at work Vol.7 No.2
Background: Workers in pesticide manufacturing industries are constantly exposed to pesticides. Genetic biomonitoring provides an early identification of potential cancer and genetic diseases in exposed populations. The objectives of this biomonitoring study were to assess DNA damage through comet assay in blood samples collected from industry workers and compare these results with those of classical analytical techniques used for complete blood count analysis. Methods: Samples from controls (n = 20) and exposed workers (n = 38) from an industrial area in Multan, Pakistan, were subjected to various tests. Malathion residues in blood samples were measured by gas chromatography. Results: The exposed workers who were employed in the pesticide manufacturing industry for a longer period (i.e., 13-25 years) had significantly higher DNA tail length (7.04 ㎛) than the controls (0.94 ㎛). Workers in the exposed group also had higher white blood cell and red blood cell counts, and lower levels of mean corpuscular hemoglobin (MCH), MCH concentration, and mean corpuscular volume in comparison with normal levels for these parameters. Malathion was not detected in the control group. However, in the exposed group, 72% of whole blood samples had malathion with a mean value of 0.14 mg/L (range 0.01-0.31 mg/L). Conclusion: We found a strong correlation (R2 = 0.91) between DNA damage in terms of tail length and malathion concentration in blood. Intensive efforts and trainings are thus required to build awareness about safety practices and to change industrial workers’ attitude to prevent harmful environmental and anthropogenic effects.
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Interactive Slide Navigation: An Approach for Manipulating Slides with Augmented Reality Markers
Muhammad Tahir,Muhammad Arshad Awan,Aniqa Hafeez,Mohsin Yazdanie,Sheikh Ziauddin 한국산학기술학회 2012 SmartCR Vol.2 No.2
The use of PowerPoint slides is an interactive way of communication in a classroom environment. To make it more effective, different techniques for the manipulation, annotation, and navigation of slides have been utilized. We presented the use of Augmented Reality technology to manipulate, annotate and navigate through PowerPoint slides. We used Augmented Reality marker recognition techniques by employing an Augmented Reality ToolKit. We performed tests by analyzing Augmented Reality marker IDs and their translational and rotational gestures. We used 1) simple flat Augmented Reality markers, 2) finger Augmented Reality markers, 3) cube markers, 4) illuminated markers, and 5) retro-reflective markers to manipulate slides. The results indicate that finger Augmented Reality markers are easy to handle and perform better than other types of markers. Cube markers are especially helpful in performing rotational gestures, while illuminated and retro-reflective markers provide moderate results in comparison with simple flat markers. As far as we know, we are the first to use Augmented Reality technology for handling slides and providing the presenter with distant access to the presentation.
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A Survey of Augmented Reality on Handheld Devices
무하마드 아샤드,김정길,홍충표,이정훈,김신덕,Awan, Muhammad Arshad,Kim, Cheong Ghil,Hong, Chung-Pyo,Lee, Jung-Hoon,Kim, Shin-Dug Institute of Embedded Engineering of Korea 2010 대한임베디드공학회논문지 Vol.5 No.4
The popularity of Smartphones makes new fields of applications based on location based service easily feasible with a new user interface called augmented reality (AR). It presents a particularly powerful user interface to context-aware computing environments. AR on Smartphones integrates virtual information into a person's physical environment by overlaying information on an image taken through Smartphone's camera and motion sensors. Mobile augmented reality systems provide this service without constraining the individual's whereabouts to a specially equipped area. This work presents an overview of handheld augmented reality focusing on applications with introducing the basic issues of them. For this purpose, an example system, Studierstube ES (embedded system), is cited, which introduces the most significant problems and various methods of solving them through the experience of converting existing PC-based AR system into handheld AR.
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