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Changes of Food Expenditure and Food Consumption of People Living in Ba Vi District, Hanoi, Vietnam from 1999 to 2013

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Health 2015年第12期7卷 1696-1702页

作者： Huong Le Thi phuong Le Hong Thanh Nguyen hoang Giang Nguyen Thu Xuan Le Thi Thanh Chuc Nguyen Thi Kim Nga Thi Thu vu Institute for Preventive Medicine and Public Health Hanoi Medical University Hanoi Vietnam

Background: During the nutrition transition period which began in the early 1990s in Vietnam, dietary intake had been changed significantly because of changes in lifestyle and living standard. Objectives: This paper aims to describe the trend for food expenditure and the frequency of meat consumption in households in Ba Vi district, Hanoi, Vietnam from 1999 to 2013. Methods: This is a longitudinal study conducted in Ba Vi district, Hanoi. Semi-annual, face-to face interviews were conducted by well-trained interviewers with 11,922 households to collect data of the household’s income, spending for food and meat consumption. Chi-square test for trend was performed to evaluate the changes of food expenditure over the years. P-value under 0.05 was considered statistically significant. Results: There were ten times increase in household’s mean income and five times increase in mean food expenditure from 1999 to 2013. The percentage of household food expenditure per total family expenditure was really high (55% in 2013). The percentage of rice expenditure per total food expenditure decreased dramatically from 59.9% in 1999 to 33.1% in 2013 while spending for other animal-based, high-protein food was an upward trend, particularly meat (10.7% in 1999 to 24.2% in 2013). The percentage of rice expenditure in well-off households was lower than poor households (55% vs. 61.8% in 1999 and 31.4% vs. 36.5% in 2013). However, the percentage of spending for meat in well-off households were much higher than that of poor households (>10%). Conclusion: Our finding indicated that mean income and food expenditure, particularly meat intake, of households had increased dramatically from 1999 to 2013. The increase of meat intake requires reallocation and direction of Vietnam public health funding and strategy.

关键词： Vietnam Income Food Expenditure Meat Consumption

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Ecological and behavioural risk factors of scrub typhus in central Vietnam:a case-control study

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Infectious Diseases of Poverty 2021年第4期10卷 97-97页

作者： Hanh Thi Duc Tran Jan Hattendorf Hung Manh Do Thanh Tien hoang Hang Thi Hai hoang Hoa Ngoc Lam mai Kim Huynh Lan Thi hoang vu Jakob Zinsstag Daniel Henry Paris Esther Schelling Department of Epidemiology and Public Health Swiss Tropical and Public Health InstituteBaselSwitzerland 不详

Background The risk factors for scrub typhus in Vietnam remain *** typhus caused by Orientia tsutsugamushi often presents as an undifferentiated febrile illness and remains under appreciated due to the limited availability of diagnostic *** tropical rickettsial illness is increasingly recognized as an important cause of non-malaria acute undifferentiated fever in *** study aimed to investigate behavioural and ecological related risk factors of scrub typhus to prevent this potentially life-threatening disease in *** We conducted a clinical hospital-based active surveillance study,and a retrospective residence-enrolment date-age-matched case–control study in Khanh Hoa province,Vietnam,from August 2018 to March *** examinations,polymerase chain reaction and enzyme-linked immunosorbent assay IgM tests were applied to define cases and *** enrolled participants filled out a questionnaire including demographic socio-economic status,personal behaviors/protective equipment,habitat connections,land use,and possible exposure to the *** conditional logistic regression was used to define the scrub typhus associated risk *** We identified 44 confirmed cases and matched them with 152 *** cases and controls,the largest age group was the 41–50 years old and males accounted for 61.4%and 42.8%,*** were similarities in demographic characteristics between the two groups,with the exception of *** factors were significantly associated with acquisition of scrub typhus,including sitting/laying directly on household floor[adjusted OR(aOR)=4.9,95%CI:1.6–15.1,P=0.006],household with poor sanitation/conditions(aOR=7.9,95%CI:1.9–32.9,P=0.005),workplace environment with risk(aOR=3.0,95%CI:1.2–7.6,P=0.020),always observing mice around home(aOR=3.7,95%CI:1.4–9.9,P=0.008),and use of personal protective equipment in the field(aOR=0.4,95%CI:0.1–1.1,P=0.076).Conclusions Ecological

关键词： Ecological Environmental Behaviour Risk factor Scrub typhus Orientia tsutsugamushi Vietnam

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Genetic diversity in two threatened species in Vietnam:Taxus chinensis and Taxus wallichiana

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Journal of Forestry Research 2017年第2期28卷 265-272页

作者： Dinh Duy vu Thi Tuyet Xuan Bui Minh Tam Nguyen Dinh Giap vu Minh Duc Nguyen Van Thang Bui Xiaohua Huang Yi Zhang College of Forestry Northwest A&F UniversityYangling 712100ShaanxiPeople's Republic of China Vietnam National Museum of Nature Vietnam Academy of Science and Technology(VAST)18 Hoang Quoc VietCau GiayHanoiVietnam Institute of Ecology and Biological Resource(VAST) 18 Hoang Quoc VietCau GiayHanoiVietnam Institute of Natural Products Chemistry(VAST) 18 Hoang Quoc VietCau GiayHanoiVietnam Institute of Forest Biotechnology Vietnam Forestry UniversityXuan MaiChuong MyHanoiVietnam

Taxus chinensis and T. wallichiana in have been threatened in their distribution areas in recent decades because of their over-exploitation and reduction and destruction of native habitats. Determining the genetic diversity in populations of the two species will provide guidelines for their protection and preservation. Two hundred and fifteen trees from six populations of T. chinensis and150 sampled trees of T. wallichiana were sampled. Six microsatellite primer pairs selected from 16 primer pairs were used to investigate genetic variation at the population and species levels. Five yielded polymorphic alleles, and among the 13 putative alleles amplified, 11 were polymorphic（accounting for 76.33 %）.Shannon＇s information index（I） and percentage of polymorphic bands（PPB）（I = 0.202 and PPB = 67.22 % for T. chinensis; I = 0.217 and PPB = 65.03 % for T. wallichiana）. Both species had low levels of genetic diversity（mean Ho= 0.107, He= 0.121 for T. chinensis; Ho= 0.095, He= 0.109 for T. wallichiana）. Genetic differentiation among populations was higher（FST= 0.189） for T. chinensis and lower（0.156） for ***, indicating limited gene flow（Nm） among populations for T. chinensis（0.68） and T. wallichiana（0.65）.Variation among individuals of T. chinensis was 63.59 and73.12 % for T. wallichiana. Thus, the threatened status of the two conifers is related to a lack of genetic diversity. All populations are isolated in small forest remnants. An ex situ conservation site should be established with a new population for these species that comprises all the genetic groups for the best chance to improve their fitness under environmental stresses.

关键词： Taxus populations alleles polymorphic microsatellite Vietnam primer accounting putative destruction

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中国大学生对越南语虚词的误用——在河内国家大学人文社会科学大学进行的调查研究

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教育教学论坛 2019年第18期 160-162页

作者：郑锦兰武黄芳銮河内国家大学下属人文社科大学语言学系河内清梅HSK汉语中心越南河内100803

在对人文社会科学大学的中国学生写的350篇文章进行考察的基础上,笔者根据虚词对句子主要成分所充当的职能进行了统计、分析并给出了一个总体考察结果。根据此结果,笔者选取了一些具有代表性、频率较高的虚词误用进行了分析,在对中越虚... 详细信息

在对人文社会科学大学的中国学生写的350篇文章进行考察的基础上,笔者根据虚词对句子主要成分所充当的职能进行了统计、分析并给出了一个总体考察结果。根据此结果,笔者选取了一些具有代表性、频率较高的虚词误用进行了分析,在对中越虚词进行对比的基础上找出导致中国学生对越南语虚词误用的原因。

关键词：虚词错误语言干扰目标语言

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The impact of plasmonic Ag−Au bimetallic nanoparticles on photocurrent enhancement in GaN-based photodetectors

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Journal of Semiconductors 2024年第12期45卷 72-78页

作者： Thi Kim Oanh vu Thi Thu phuong Bui Ngoc Anh Nguyen Thi Thanh Bao Nguyen Thi Minh Hien Nguyen Eun Kyu Kim No.10 Dao Tan Institute of PhysicsVietnam Academy of Science and TechnologyNo.10 Dao TanHanoi 118000Vietnam Graduate University of Science and Technology Vietnam Academy of Science and Technology18 Hoang Quoc VietHanoi 122300Vietnam Department of Physics and Research Institute for Natural Sciences Hanyang UniversitySeoul 04763Republic of Korea

Recently,there has been considerable interest in high-efficiency ultraviolet(UV)photodetectors for their potential practical *** this study,a high-quality UV photodetector was fabricated using a combination of Ag and Au NPs with GaN *** GaN film was deposited using sputtering technique,whereas Ag and Au films were grown using thermal evaporation ***-Au bimetallic nanoparticles were formed by treating them at the various annealing temperature to improve the interaction between light and the photoactive layers of the *** optimal annealing temperature to achieve the best performance of a photodetector is 650℃.This led to a photoresponsivity of 98.5 A/W and the ON/OFF ratio of 705 at low bias voltage of 1 *** work establishes the foundation for the advancement of high-performance UV photodetectors.

关键词： UV photodetectors GaN Ag-Au bimetallic nanoparticles plasmonic effect

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