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Rapid and efficient characterization of cervical collagen orientation using linearly polarized colposcopic images

Journal of Innovative Optical Health Sciences 2023年第5期16卷 21-31页

作者： Cat Phan ngoc Khuong Dung Nguyen Huu Quang Hai pham Thanh Long Nguyen Quynh Nguyen ngoc Duc Le Huynh Tien Tran Van Tu Ly Anh Department of Applied Physics Ho Chi Minh City University of Technology 268 Ly Thuong Kiet Street District 10 Ho Chi Minh City 700000Vietnam Quality Management Department Tu Du Hospital 284 Cong QuynhDistrict 1 Ho Chi Minh City 700000Vietnam Department of Biomedical Engineering Nguyen Tat Thanh University 300A Nguyen Tat Thanh District 4Ho Chi Minh City 700000Vietnam Faculty of Science and Technology Jean Monnet University 11 Rue du Docteur Annino Saint Etienne 42000France

Collagen provides tissue strength and structural *** fication of the orientated dispersion of collagen fibers is an important factor when studying the mechanical properties of the *** this study,for the first time,a new method for rapid characterization of the collagen fiber orientations of the cervix using linearly polarized light colposcopy is presented.A total of 24 colposcopic images were captured using a cross-polarized imaging system with white LED light *** the preprocessing stage,the Red channel of the RGB image was chosen,which contains no information of the blood vessels because of the low-absorption of blood cells in the red ***,which is an ImageJ plug-in,was used to estimate the local orientation of the collagen *** result shows that in the nonpregnant cervix,the middle zone(Zone 2)has circumferentially aligned collagen fibers while the inner zone(Zone 1)has randomly *** collagen fiber dispersion in Zone 2 is much smaller than that in Zone 1 at all four quadrants region(anterior,posterior,left,and right quadrant).This new analysis technique could potentially combine with diagnostic tools to provide a quantitative platform of collagen fibers in the clinic.

关键词： Cervix collagen fibers collagen orientation coherency cross-polarized imaging colposcopy

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Seroprotection after hepatitis B vaccination amongst infants aged between 12 and 24 months in Ho Chi Minh City, Vietnam

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Asian Pacific Journal of Tropical Medicine 2020年第7期13卷 295-300页

作者： Giao Huynh Quang Vinh Bui ngoc Lan Nguyen Le An pham Faculty of Public Health University of Medicine and Pharmacy at Ho Chi Minh CityVietnam Department of Pediatrics University of Medicine and Pharmacy at Ho Chi Minh CityVietnam Department of Microbiology and Parasitology University of Medicine and Pharmacy at Ho Chi Minh CityVietnam Center for training of Family Medicine University of Medicine and Pharmacy at Ho Chi Minh City Vietnam

Objective:To assess levels of HBs Ab amongst infants who received hepatitis B vaccine in the Expanded Program on Immunization in ***:A cross-sectional study was carried out at 16 community health centers from February 2016 to July *** infants were tested for HBs Ab and HBs *** questionnaires were used to collect relevant information about the demographics of the parents/caregivers and their infants after physical ***:A total of 199 eligible infants were selected with a mean age of(17.3±4.5)*** antibody levels with HBs Ab≥10 m IU/m L were detected in 68.3%of *** these,antibody levels from 10 to 99 m IU/m L were 48.5%of those tested and antibody levels≥100 ml U/m L were recorded as 51.5%.No cases were recorded of being infected with hepatitis B *** rate of positive HBs Ab level in those who were not wasting and≥18 months old was less than that among those who were<18 months old(OR 0.49,95%CI:0.26-0.92,P<0.05)while the infants with wasting and<18 months were less likely to be positive HBs Ab than those who were not wasting and of the same age group(OR 0.15,95%CI:0.04-0.55,P<0.05).Conclusions:Seroprotection against hepatitis B virus was low in the infants tested(at 68.3%),which suggests that the hepatitis B vaccine should be administered with one additional dose for infants between 12 and 24 months of age,particularly those with wasting.

关键词： Hepatitis B virus Hepatitis B Vaccine Vaccination Expanded Program on Immunization

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Is convenience really king? Comparative evaluation of catastrophic costs due to tuberculosis in the public and private healthcare sectors of Viet Nam: a longitudinal patient cost study

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贫困所致传染病(英文) 2024年第2期13卷 1-12页

作者： Nguyen Hoa Binh Quang Vo Luan Nguyen Forse Rachel Jeanette Wiemers Anja Maria Christine Huynh Huy Ba dong Thuy Thi Thu Phan Yen Thi Hoang Creswell Jacob Dang Thi Minh Ha Nguyen Lan Huu Shedrawy Jad L?nnroth Knut Nguyen Tuan Dinh Van Dinh Luong Annerstedt Kristi Sidney Codlin Andrew James National Lung Hospital Ha Noi Viet Nam Friends for International TB Relief Ha Noi Viet Nam Department of Global Public Health WHO Collaboration Centre On Tuberculosis and Social Medicine Karolinska Institute Stockholm Sweden Stop TB Partnership Geneva Switzerland pham ngoc Thach Hospital Ho Chi Minh City Viet Nam

Background In Viet Nam, tuberculosis (TB) represents a devastating life-event with an exorbitant price tag, partly due to lost income from daily directly observed therapy in public sector care. Thus, persons with TB may seek care in the private sector for its flexibility, convenience, and privacy. Our study aimed to measure income changes, costs and catastrophic cost incurrence among TB-affected households in the public and private *** Between October 2020 and March 2022, we conducted 110 longitudinal patient cost interviews, among 50 patients privately treated for TB and 60 TB patients treated by the National TB Program (NTP) in Ha Noi, Hai Phong and Ho Chi Minh City, Viet Nam. Using a local adaptation of the WHO TB patient cost survey tool, participants were interviewed during the intensive phase, continuation phase and post-treatment. We compared income levels, direct and indirect treatment costs, catastrophic costs using Wilcoxon rank-sum and chi-squared tests and associated risk factors between the two cohorts using multivariate *** The pre-treatment median monthly household income was significantly higher in the private sector versus NTP cohort (USD 868 vs USD 578;P=0.010). However, private sector treatment was also significantly costlier (USD 2075 vs USD 1313;P=0.005), driven by direct medical costs which were 4.6 times higher than costs reported by NTP participants (USD 754 vs USD 164;P<0.001). This resulted in no significant difference in catastrophic costs between the two cohorts (Private: 55% vs NTP: 52%;P=0.675). Factors associated with catastrophic cost included being a single-person household [adjusted odds ratio [(aOR=13.71; 95% confidence interval (CI): 1.36–138.14;P=0.026], unemployment during treatment (aOR=10.86; 95%CI: 2.64–44.60;P<0.001) and experiencing TB-related stigma (aOR=37.90; 95%CI: 1.72–831.73;P=0.021).Conclusions Persons with TB in Viet Nam face similarly high risk of catastrophic costs whether treated in the

关键词： Tuberculosis Patient cost Catastrophic cost Private sector Comparative analysis Viet Nam

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Perceived susceptibility,severity,and reinfection of COVID-19 may influence vaccine acceptance-Authors'reply

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Asian Pacific Journal of Tropical Medicine 2021年第5期14卷 239-240页

作者： Giao Huynh Thien Thuan Tran Han Thi ngoc Nguyen Le An pham Faculty of Public Health University of Medicine and Pharmacy at Ho Chi Minh CityHo Chi Minh CityVietnam Infection Control Department University Medical Center Ho Chi Minh CityHo Chi Minh CityVietnam Family Medicine Training Center University of Medicine and Pharmacy at Ho Chi Minh CityHo Chi Minh CityVietnam

Authors’reply:We would like to thank you for your interesting *** study aims to understand healthcare workers’intention to receive a COVID-19 vaccination and the factors that affect their ability to do so,based on t... 详细信息

关键词： thank COV Authors

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Land subsidence prediction for a new urban mass rapid transit line in Hanoi

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Underground Space 2020年第2期5卷 93-104页

作者： pham Huy Giao Vu Thi Hue Nguyen Dang Han Nguyen Thi Hai Anh Nguyen ngoc Minh Asian Institute of Technology BangkokThailand Institute of Foundation and Underground FECONHanoiViet Nam Sonhai JSC Viet Nam

The rapidly increasing population,urbanization,and industrialization of Hanoi city in the last few decades have necessitated the urgent development of a new underground public transport infrastructure such as the urban mass rapid transit(UMRT)system that is now under ***,concerns on the possible effects of land subsidence on the to-be-constructed and operated UMRT lines must be *** of the difficulties while assessing land subsidence in Hanoi is the insufficient subsidence monitoring ***,a good geotechnical characterization of the subsoil profile and proper numerical analysis can help predict groundwater pumping-induced subsidence *** UMRT line No.2 that was selected for this study is special as it runs across the old quarter downtown,located at the very heart of Hanoi *** this paper,the Hanoi aquifer system,groundwater extraction,and subsidence monitoring network of Hanoi are reviewed *** data from 30 investigation boreholes were analyzed to characterize the subsoil profile underlying a segment of the UMRT line No.2 that consists of both elevated and underground *** soil layers were identified up to a depth of 50 m,including a compressible soft clay layer 10-15 m thick that is supposed to be most vulnerable to subsidence by groundwater *** on the long-term groundwater monitoring data,one-dimensional finite element method(FEM)consolidation analyses were carried out for three drawdown boundary conditions of 5,10,and 15 m and yielded a total subsidence of 0.15,0.35,and 0.5 m,respectively,after 25 years with 1994 as the reference *** results of this study confirmed that land subsidence in particular should be considered in the construction and maintenance of the UMRT lines in Hanoi,in particular for underground sections that are founded on soft to medium clay layers.

关键词： Hanoi aquifer system Groundwater pumping Land subsidence UMRT line Geotechnical characterization

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An Analytical Approach for Nonlinear Buckling Analysis of Torsionally Loaded Sandwich Carbon Nanotube Reinforced Cylindrical Shells with Auxetic Core

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Advances in Applied Mathematics and Mechanics 2023年第2期15卷 468-484页

作者： Dang Thuy dong Nguyen Thi Phuong Vu Hoai Nam Le ngoc Ly Nguyen Van Tien Vu Minh Duc Tran Quang Minh Vu Tho Hung Nguyen Thi Huong Giang Faculty of Civil Engineering University of Transport TechnologyHanoi 100000Vietnam Graduate School of Advanced Science and Engineering Hiroshima University1-4-1 KagamiyamaHigashi-HiroshimaHiroshima 739-8527Japan Faculty of Fundamental Science for Engineering University of Transport TechnologyHanoi 100000Vietnam

The main aim of this paper is to present an analytical approach on the postbuckling for torsionally loaded sandwich carbon nanotube(CNT)reinforced cylindrical shells with the auxetic *** considered shells consist of three layers,external and internal CNT reinforced layers,and the auxetic lattice core made by isotropic *** homogenization model for honeycomb auxetic lattice core is utilized,and the equilibrium equations are formulated based on the nonlinear Donnell’s thin shell theory with von Karman geometrical *** three terms of deflection are considered,the Airy’s stress function and Galerkin’s method are utilized,the explicit expression of critical buckling of torsionally loaded shells and load-deflection expression of postbuckling states are *** effects of two carbon nanotube reinforced layers,the auxetic core layer,the volume fraction of carbon nanotube on the torsional buckling behavior are examined and remarked.

关键词： Nonlinear postbuckling carbon nanotube reinforced composite cylindrical shell torsion auxetic core

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Knowledge and attitude toward COVID-19 among healthcare workers at District 2 Hospital, Ho Chi Minh City

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Asian Pacific Journal of Tropical Medicine 2020年第6期13卷 260-265页

作者： Huynh Giao Nguyen Thi ngoc Han Tran Van Khanh Vo Kim Ngan Vo Van Tam pham Le An Faculty of Public Health University of Medicine and Pharmacy at Ho Chi Minh CityVietnam Department of Infectious Diseases University Medical Center Ho Chi Minh CityVietnam Department of Scientific Research District 2 HospitalHo Chi Minh CityVietnam Department of Nursing District 2 HospitalHo Chi Minh CityVietnam Faculty of Nursing and Medical Technology University of Medicine Pham Ngoc Thach at Ho Chi Minh CityVietnam Center for the Training of Family Medicine Faculty of MedicineUniversity of Medicine and Pharmacy at Ho Chi Minh CityVietnam

Objective:To assess the knowledge and attitude toward coronavirus disease-2019(COVID-19)among healthcare workers at District 2 Hospital in Ho Chi Minh City(HCMC).Methods:A cross-sectional study was performed between January 2020 and February 2020 at District 2 Hospital.A systematic random sampling strategy was carried out and the data was collected through a self-administered questionnaire of the knowledge and attitude of healthcare workers regarding *** analysis was reported to describe the demographic,mean knowledge and attitude score of healthcare *** statistics including t-test,ANOVA and Spearman’s correlation were used to evaluate the relationship between study ***:A total of 327 eligible healthcare workers had a mean score of knowledge and attitude of 8.17±1.3(range 4-10)and 1.86±0.43(range 1-5),*** showed good knowledge and a positive ***,approximately two thirds of the participants knew the mode of transmission,the isolation period and treatment(67.0%,65.8%,and 58.4%,respectively),and 82.3%and 79.8%,respectively,held positive attitude regarding the risk of personal and family members getting *** was a negative correlation between knowledge scores and attitude scores(r=-0.21,P<0.001).Additionally,healthcare workerspredominately used social media to inform themselves about COVID-19(91.1%).Conclusions:The majority of healthcare workers had good knowledge and positive attitude toward ***,the level of some knowledge and attitude lower than that expected for their position level towards the *** education interventions and campaigns are required for healthcare workers.

关键词： Knowledge Attitude COVID-19 Healthcare worker District 2 Hospital

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Association between the Phenotypes and Genotypes of Antimicrobial Resistance in Haemophilus parasuis Isolates from Swine in Quang Binh and Thua Thien Hue Provinces, Vietnam

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Engineering 2020年第1期6卷 40-48页

作者： Chao Nguyen Van Lijun Zhang Tam Vu Thi Thanh Hung pham Hoang Son Tuan Tran ngoc Qi Huang Rui Zhou State Key Laboratory of Agricultural Microbiology College of Veterinary MedicineHuazhong Agricultural UniversityWuhan 430070China Faculty of Animal Science and Veterinary Medicine University of Agricultural and ForestryHue UniversityHue 53000Vietnam Mientrung Institute for Scientific Research Vietnam Academy of Science and TechnologyHue 53000Vietnam Guangdong Provincial Key Laboratory of Marine Biology Shantou UniversityShantou 515063China Cooperative Innovation Center of Sustainable Pig Production Wuhan 430070China International Research Center for Animal Diseases The Ministry of Science and TechnologyWuhan 430070China

Haemophilus parasuis (H. parasuis) is one of the bacterial pathogens of great concern as it causes huge economic losses to the swine industry worldwide. One of the reasons why the control of H. parasuis has failed is the increase in antimicrobial resistance (AMR). The country of Vietnam has the second-largest pig production in Asia. However, there is still a lack of data about the AMR prevalence of H. parasuis in *** purpose of this study is to investigate the prevalence of AMR and analyze the association between AMR and AMR genes (ARGs). The H. parasuis strains used in this research were isolated from swine in the Quang Binh and Thua Thien Hue Provinces, Central Vietnam, as reported in our previous study. All of the strains were tested for AMR against 25 antibacterial agents using the broth microdilution method and for the presence of ARGs using the polymerase chain reaction (PCR) method. The tested strains were shown to have a high frequency of resistance to trimethoprim/sulfamethoxazole (94.6%), followed by resistance to colistin, chloramphenicol, gentamicin, penicillin, lincomycin, and amoxicillin. The most prevalent ARGs in these strains were blaTEM-1 (94.6%), int (76.8%), gyrA (58.9%), and rmtD (50.0%). Cefuroxime, chloramphenicol, and tobramycin resistances were strongly correlated with the presence of the ARGs blaROB-1 (odds ratio (OR) = 26.3, 95% confidence interval (CI) 2.7–255.7, p = 0.002), catl (OR = 25.1, 95% CI 2.4–258.9, p = 0.004), and strB (OR = 23.5, 95% CI 2.6–212.6, p = 0.001), *** study reveals for the first time the current situation of H. parasuis AMR in Central Vietnam, which is helpful for the clinical control of this disease, as well as for the development of policies and clinical practice guidelines to reduce AMR in swine production in Central Vietnam.

关键词： Haemophilus parasuis Antimicrobial resistance Antimicrobial resistance gene Vietnam

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Drought and conflicts at the local level: Establishing a water sharing mechanism for the summer-autumn rice production in Central Vietnam

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International Soil and Water Conservation Research 2019年第4期7卷 362-375页

作者： Chuong Van Huynh Catharien Terwisscha van Scheltinga Ty Huu pham Non Quoc Duong Phuong Thi Tran Linh Hoang Khanh Nguyen Tung Gia pham ngoc Bich Nguyen Jos Timmerman Hue University Viet Nam Climate Change and Adaptive Land and Water Management Group Wageningen Environmental ResearchNetherlands University of Agriculture and Forestry Hue UniversityViet Nam

In recent years,water for agricultural production gradually became a significant challenge in the context of climate change in *** solutions are required,which consider the use of resources for both human needs and ecology,and that account for the equitable distribution and the livelihood of the farmers now and in the *** particular,the farmers in the province of Quang Nam faring water shortage in the cultivation of paddy in the summer-autumn *** arise regarding the sharing of the water between the farmers,the drinking water company and the hydropower *** the context of climate change,the water shortage is expected to increase in the *** article presents the results of participatory action research (PAR) approach to develop a local level mechanism for water sharing,in which stakeholders actively *** sharing mechanism was developed,envisioning a sustainable solution for inclusive water *** mechanism was successfully implemented in two cases,one at commune level (Tho stream) and one at the district level (Mo stream).The participatory approach proved to be successful in setting up a broadly acceptable mechanism that will need to be further incorporated in the institutional set-up.

关键词： Adaptation Agriculture Climate change Governance Rice production Water sharing

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Prevalence of Strongyloides in Southeast Asia:a systematic review and meta-analysis with implications for public health and sustainable control strategies

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Infectious Diseases of Poverty 2023年第5期12卷 91-91页

作者： Abigail Hui En Chan Teera Kusolsuk Dorn Watthanakulpanich Wallop Pakdee pham ngoc Doanh Azlin Mohd Yasin Paron Dekumyoy Urusa Thaenkham Department of Helminthology Faculty of Tropical Medicine Mahidol University Bangkok Thailand Institute of Ecology and Biological Resources Graduate University of Science and Technology Vietnam Academy of Science and Technology Hanoi Vietnam Department of Parasitology and Medical Entomology Faculty of Medicine Universiti Kebangsaan Malaysia Selangor Malaysia

Background Strongyloidiasis,caused by the nematodes Strongyloides stercoralis and Strongyloides fuelleborni,is estimated to afect over 600 million individuals *** disease is endemic in Southeast Asia,where a warmhumid climate and socio-economic conditions maintain the parasite’s life cycle and ***,the current diagnostic methods may not be sufciently sensitive,suggesting that the true prevalence of strongyloidiasis could be seriously underestimated in *** study aims to determine the prevalence of strongyloidiasis in Southeast Asia through a systematic review and meta-analysis and to discuss the implications of the estimated prevalence on diagnostic approaches and control *** Following PRISMA guidelines,we conducted a systematic literature search in PubMed and Google Scholar databases to identify studies reporting Strongyloides prevalence data in the 11 Southeast Asian countries up to December 2022.A random efects model was employed to estimate the pooled prevalence of *** at both regional and country *** Out of 3722 articles identifed,224 met our inclusion *** *** specifcally,we found 187 articles,of which 52.4%were from *** Southeast Asian countries,except Brunei,had at least one study on Strongyloides *** estimated pooled prevalence of *** regionally was 12.7%(95%CI 10.70-14.80%),ranging from 0.4 to 24.9%at the country *** had the highest pooled prevalence(24.9%,95%CI 15.65-35.38%),followed by Lao PDR(16.5%,95%CI 9.50-24.95%).Moreover,we obtained a pooled prevalence of 10%(95%CI 7.06-13.52%)in a group comprising immigrants,workers,and veterans from Southeast Asian *** infects various host types,including nonhuman primates,domestic dogs and cats,rodents,and transport carriers such as cockroaches and *** A high prevalence of strongyloidiasis in Southeast Asia was revealed,highlighting the importance of

关键词： Strongyloides Strongyloidiasis Southeast Asia Prevalence Systematic review

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