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Zaw, Aung K.,Myat, Aung M.,Thandar, Mya,Htun, Ye M.,Aung, Than H.,Tun, Kyaw M.,Han, Zaw M. Occupational Safety and Health Research Institute 2020 Safety and health at work Vol.11 No.2
Background: In a wide range of industries, noise-induced hearing loss remains one of the most prevalent occupational problems. This study aimed to assess the noise exposure level and associated factors of hearing loss among textile workers in Yangon Region, Myanmar. Methods: A cross-sectional study was conducted at a Textile mill (Thamine), Yangon Region, from April to December 2018. In total, 226 workers who were randomly selected from 3 weaving sections participated in face-to-face interviews using a structured questionnaire. A digital sound level meter and pure-tone audiometer were used for the assessment of noise exposure level and hearing loss, respectively. Logistic regression analysis was performed to assess the associated factors of hearing loss. Results: In total workers, 66.4% were exposed to ≥85 dB(A) of noise exposure, and the prevalence of hearing loss was 25.7%. Age ≥35 years, below high school education, hearing difficulty, tinnitus, hypertension, > 9 years of service duration in a textile mill were positively associated with hearing loss. After adjusting confounding factors, age ≥35 years (adjusted odds ratio = 6.90, 95% confidence interval = 3.45-13.82) and tinnitus (adjusted odds ratio = 2.88, 95% confidence interval = 1.13-7.37) were persistently associated with hearing loss. Conclusion: Providing occupational hazard education and enforcement of occupational safety regulations should be taken to decrease the noise exposure level. The regular audiometry test should be conducted for assessment of hearing threshold shift. The employer needs to implement a hearing conservation program in workplace when noise exposure reaches or exceeds 85 dB(A) for 8 hours.
Efficient Data Integration and Database Design for Aerospace Design Frameworks
Tun Lwin,Thawdar Lwin,Su Su Aung,Jae-Woo Lee,Sangho Kim 한국항공우주학회 2013 한국항공우주학회 학술발표회 논문집 Vol.2013 No.4
The data integration processes of heterogeneous legacy systems are key aspect of developing in computerized systems and integration of design frameworks. In this research, the aerospace design framework with legacy programs is implemented and data integration wrapper program is mapped between different data resources from legacy programs. Thus, the database table connector (DTC) wrapper program is created and interacted between database management system and legacy codes. The DTC provides data integration among different data resources and data management by using SQL querying. The DTC enables designers or developers to provide rapid and efficient development of different data resources integration in design frameworks. By using DTC and database design, small-sized fixed wing aircraft framework and helicopter rotor blade framework are implemented.
Energy-Efficient Offloading and User Association in UAV-assisted Vehicular Ad Hoc Network
Pyae Sone Aung,Yan Kyaw Tun,Nway Nway Ei,Choong Seon Hong 한국통신학회 2020 한국통신학회 APNOMS Vol.2020 No.09
Task offloading scheme provides opportunistic energy saving for computation-intensive on-vehicle applications. The evolution of the Vehicular Edge Computing (VEC) paradigm has contributed a vast potential that can enhance the performance of such vehicles with energy-hungry and delay-sensitive services. However, determining how much workload to compute locally or offload to the VEC server is still quite challenging. Moreover, when all the vehicles try to offload their computation tasks to the same VEC server, it leads to deterioration in the performance gain due to overburden. Recently, unmanned aerial vehicle (UAV) as the edge server has gained huge attraction due to its well maneuverability and cost efficiency. In this paper, we study the energy-efficient offloading as well as association of the vehicles between the road side unit (RSU) and UAV. First, we formulate the joint offloading and association problem. Next, we decompose the formulated mixed integer linear (MIL) problem into two subproblems and then solve them by using standard convex optimization. Finally, we compare our proposed algorithm with benchmark schemes and the numerical results demonstrate that our algorithm outperforms the benchmark solutions.
Su Su Aung,Tun Lwin,Sangho Kim,Jae-Woo Lee 한국항공우주학회 2013 한국항공우주학회 학술발표회 논문집 Vol.2013 No.11
These days, smart phones are very popular tools as it can do much more than just calling people. One of the reasons is the availability of variety of mobile applications with rich functionalities that the users can enjoy with a touch of a fingertip. Eventually, it attracts more researches and developments in mobile application development. In this study, the application development of aerospace design system on smart phones is introduced. In the past, a web-based design framework was developed using web services to connect with a web server. This time, a smart phone is considered as a client which communicates to the server as a web application would using web services. It involves the integration of mobile-based and web-based systems and a prototype application was implemented to test the idea.
Thunchanok Khammanee,Nongyao Sawangjaroen,Hansuk Buncherd,Aung Win Tun,Supinya Thanapongpichat 대한기생충학ㆍ열대의학회 2019 The Korean Journal of Parasitology Vol.57 No.4
Artemisinin-based combination therapy (ACT) resistance is widespread throughout the Greater Mekong Subre- gion. This raises concern over the antimalarial treatment in Thailand since it shares borders with Cambodia, Laos, and Myanmar where high ACT failure rates were reported. It is crucial to have information about the spread of ACT resistance for efficient planning and treatment. This study was to identify the molecular markers for antimalarial drug resistance: Pfkelch13 and Pfmdr1 mutations from 5 provinces of southern Thailand, from 2012 to 2017, of which 2 provinces on the Thai- Myanmar border (Chumphon and Ranong), one on Thai-Malaysia border (Yala) and 2 from non-border provinces (Phang Nga and Surat Thani). The results showed that C580Y mutation of Pfkelch13 was found mainly in the province on the Thai-Myanmar border. No mutations in the PfKelch13 gene were found in Surat Thani and Yala. The Pfmdr1 gene iso- lated from the Thai-Malaysia border was a different pattern from those found in other areas (100% N86Y) whereas wild type strain was present in Phang Nga. Our study indicated that the molecular markers of artemisinin resistance were spread in the provinces bordering along the Thai-Myanmar, and the pattern of Pfmdr1 mutations from the areas along the international border of Thailand differed from those of the non-border provinces. The information of the molecular markers from this study highlighted the recent spread of artemisinin resistant parasites from the endemic area, and the data will be useful for optimizing antimalarial treatment based on regional differences.
Thunchanok Khammanee,Nongyao Sawangjaroen,Hansuk Buncherd,Aung Win Tun,Supinya Thanapongpichat 대한기생충학ㆍ열대의학회 2022 The Korean Journal of Parasitology Vol.60 No.1
Erythrocytes deficient in glucose-6-phosphate dehydrogenase (G6PD) is more susceptible to oxidative damage from free radical derived compounds. The hemolysis triggered by oxidative agents such as primaquine (PQ) is used for the radical treatment of hypnozoites of P. vivax. Testing of G6PD screening before malaria treatment is not a common practice in Thailand, which poses patients at risk of hemolysis. This retrospective study aimed to investigate the prevalence of G6PD in malaria patients who live in Southern Thailand. Eight hundred eighty-one malaria patients were collected for 8-year from 2012 to 2019, including 785 (89.1%) of P. vivax, 61 (6.9%) of P. falciparum, 27 (3.1%) of P. knowlesi, and 8 (0.9%) of mixed infections. The DiaPlexC genotyping kit (Asian type) and PCR-RFLP were employed to determine the G6PD variants. The result showed that 5 different types of G6PD variants were identified in 26 cases (2.9%); 12/26 (46.2%) had Mahidol (487G>A) and 11/26 (42.3%) had Viangchan (871G>A) variants, while the rest had Kaiping (1388G>A), Union (1360C>T), and Mediterranean (563C>T) variants. G6PD Songklanagarind (196T>A) variant was not found in the study. Our result did not show a significant difference in the malaria parasite densities in patients between G6PD-deficient and G6PD-normal groups. According to our findings, testing G6PD deficiency and monitoring the potential PQ toxicity in patients who receive PQ are highly recommended.
Supinya Thanapongpichat,Thunchanok Khammanee,Nongyao Sawangjaroen,Hansuk Buncherd,Aung Win Tun 대한기생충학ㆍ열대의학회 2019 The Korean Journal of Parasitology Vol.57 No.5
Plasmodium vivax is usually considered morbidity in endemic areas of Asia, Central and South America, and some part of Africa. In Thailand, previous studies indicated the genetic diversity of P. vivax in malaria-endemic regions such as the western part of Thailand bordering with Myanmar. The objective of the study is to investigate the genetic diversity of P. vivax circulating in Southern Thailand by using 3 antigenic markers and 8 microsatellite markers. Dried blood spots were collected from Chumphon, Phang Nga, Ranong and, Surat Thani provinces of Thailand. By PCR, 3 distinct sizes of PvMSP3α, 2 sizes of PvMSP3β and 2 sizes of PvMSP1 F2 were detected based on the length of PCR products, respectively. PCR/RFLP analyses of these antigen genes revealed high levels of genetic diversity. The genotyping of 8 microsatellite loci showed high genetic diversity as indicated by high alleles per locus and high expected heterozygosity (HE). The genotyping markers also showed multiple-clones of infection. Mixed genotypes were detected in 4.8% of PvMSP3α, 29.1% in PvMSP3β and 55.3% of microsatellite markers. These results showed that there was high genetic diversity of P. vivax isolated from Southern Thailand, indicating that the genetic diversity of P. vivax in this region was comparable to those observed other areas of Thailand.