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Bang Quoc Ho,Hoang Ngoc Khue Vu,Thoai Tam Nguyen,Thi Thuy Hang Nguyen,Ricardo Simon Carbajo,Quan Le,Rajnish Rakholia 한국대기환경학회 2021 한국대기환경학회 학술대회논문집 Vol.2021 No.10
Air in Ho Chi Minh city is polluted by PM2.5 (particle matter with the diameter is less than 2.5 μm, so-called PM2.5), O₃, CO, NO₂ and TSP which greatly affects public health. Ho Chi Minh City (HCMC) had 8,640,000 inhabitants with a total of 7,339,552 motorcycles and 637,323 automobiles. There are about 2,807 factories releasing air emission, 2,061,957 household and 5,096 restaurants in the city. A comprehensive study is required to evaluate causes of air pollution and the impacts of air pollution level to public health in this city. The aim of this study is to: (i) Application EMISENS model and other tools to calculate air emission in HCMC and (ii) Modelling the Impact of Air Pollution on Public Health in Ho Chi Minh City for Policy Making and Awareness Creation using Machine Learning. The results showed that comprehensive EI and GHG over HCMC in 2019 was conducted in this project by following the top-down and bottom-up approaches and IPCC-2006 methodology. The estimation of the emission of different types of sources including line, point, area, and the biogenic source was conducted. Traffic sources accounted for the largest emissions for almost all pollutants. Motorcycles were the dominant emission source of all pollutants for on-road sources, accounting for 35.3%, 91.4%, 65.4%, 70.4%, 99.4% and 79.9% of the total line sources emissions for NOx, CO, SOx, NMVOC, CH₄ and PM2.5, respectively. Industrial activities contributed the highest emission of PM2.5 about 39.7% of the total of PM2.5 in HCMC in 2019. The area sources accounted for 38.9% of TSP and 23.5% of PM2.5 in HCMC, whereas, others were negligible sources. Biogenic sources, particularly from greenery, agriculture, mangroves, etc. of the HCMC emitted 4.6% of total NMVOC emissions of the whole city. Motorcycles contributed the highest emission of PM2.5 for all single sources of emission in HCMC. For PM2.5, motorbikes contribute 24.5% of HCMC"s total PM2.5 emissions, Households, Textiles, Metal Production, Food, Restaurants, Seaports, Manufacturing Paper respectively is 15.1, 10.0, 9.1, 6.8, 6.7, 5.8 and 3.8, respectively. With SO₂, motorcycles, Thermo-electricity, Seaports, Textile, Cars, Food, Metal production and HDVs contribute 24.6, 20.7, 11.7, 8.6, 6.6, 5.5, 5.0 and 3.8% of total SO₂ emission of HCMC. Study also develop air quality automatically monitoring network and install 6 air quality stations around HCMC, then apply Machine Learning to analysis/extrapolate hourly air quality data for HCMC, then modeling the the Impact of air Pollution on hospital admission in HCMC. The 13 measure to reduce air pollutants should be based on this detailed EI emission.
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Le, Thi Huong,Nga, Thi Thu Vu,Nguyen, Ngoc Dung,Le, Thi Thanh Xuan,Kim, Bao Giang,Phan, Thi Hai,Doan, Thu Huyen,Luong, Ngoc Khue,Nguyen, Tuan Lam,Hoang, Van Minh,Pham, Thi Quynh Nga Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.no.sup1
The aim of this paper is to report the rate of current and ever cigarette smoking and explore correlates of current cigarette smoking among adolescents aged 13-15 in Viet Nam. This analysis was derived from GYTS survey, which comprised of 3,430 adolescents aged 13-15, conducted in 2014 in 13 cities and provinces of Viet Nam. We calculated the weighted rates of current and ever cigarette smoking and reported patterns of smoking behavior. We also performed logistic regression to explore correlates of current cigarette smoking behavior. The weighted rate of ever cigarette smoking was 9.5% (95% confidence interval (CI): 8.5 %-10.5%), in which the weighted rate among males (15.4%; 95% CI: 13.6%-17.0%) was higher than that among females (4.2%; 95% CI: 3.3%-5.1%). The weighted rate of current cigarette smoking was relatively low at 2.5% (95%CI: 2.0%-3.0%) with higher weighted rate among males (4.9%; 95% CI: 3.8%-5.9%) compared to the corresponding figure among females (0.2%; 95% CI: 0.0 %-0.5%). Current cigarette smoking was significantly higher among males than females, in students aged 15 versus 13 years old, and in students who had several or all close friends smoking and students with daily observation of smoking at school. For greater smoking reduction outcomes, we recommend that tobacco interventions for adolescents should consider targeting more male students at older ages, establish stricter adherence to school-based banning of cigarette smoking, engage both smoking and nonsmoking adolescents and empower adolescents to resist peer smoking influence as well as changing their norms or beliefs towards smoking benefits.
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Loi Van Le,Quang Van Vu,Thanh Van Le,Hieu Trung Le,Khue Kim Dang,Tuan Ngoc Vu,Anh Hoang Ngoc Nguyen,Thang Manh Tran 한국간담췌외과학회 2024 Annals of hepato-biliary-pancreatic surgery Vol.28 No.1
Backgrounds/Aims: Hepatolithiasis and choledocholithiasis are frequent pathologies and unfortunately, with the current treatment strategies, the recurrence incidence is still high. This study aimed to assess the outcomes of laparoscopic choledochotomy using cholangioscopy via the percutaneous-choledochal tube for the treatment of hepatolithiasis and choledocholithiasis in Vietnamese patients. Methods: A cross-sectional study of patients with hepatolithiasis and/or choledocholithiasis who underwent laparoscopic choledochotomy using intraoperative cholangioscopy via percutaneous-choledochal tube at the Department of Hepatopancreatobiliary Surgery, 108 Military Central Hospital, from June 2017 to March 2020. Results: A total of 84 patients were analyzed. Most patients were females (56.0%) with a median age of 55.56 years. Among them, 41.8% of patients had previous abdominal operations, with 33.4% having choledochotomy. All patients underwent successful laparoscopic common bile duct exploration followed by T-tube drainage without needing to convert to open surgery. Most patients (64.3%) had both intrahepatic and extrahepatic stones. The rate of stones ≥ 10 mm in diameter was 64.3%. Biliary strictures were observed in 19.1% of patients during cholangioscopy. Complete removal of stones was achieved in 54.8% of patients. Intraoperative complications were encountered in two patients, but there was no need to change the strategy. The mean operating time was 121.85 ± 30.47 minutes. The early postoperative complication rate was 9.6%, and all patients were managed conservatively. The residual stones were removed through the T-tube tract by subsequent choledochoscopy in 34/38 patients, so the total success rate was 95.2%. Conclusions: Laparoscopic choledochotomy combined with cholangioscopy through the percutaneous-choledochal tube is a safe and effective strategy for hepatolithiasis and/or choledocholithiasis, even in patients with a previous choledochotomy.
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