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  • 1
    Online Resource
    Online Resource
    Climate Variability and Dengue Hemorrhagic Fever in Hanoi, Viet Nam, During 2008 to 2015
    SAGE Publications ; 2018
    In:  Asia Pacific Journal of Public Health Vol. 30, No. 6 ( 2018-09), p. 532-541
    Details
    In: Asia Pacific Journal of Public Health, SAGE Publications, Vol. 30, No. 6 ( 2018-09), p. 532-541
    Abstract: Dengue fever/dengue hemorrhagic fever (DF/DHF) has been an important public health challenge in Viet Nam and worldwide. This study was implemented in 2016-2017 using retrospective secondary data to explore associations between monthly DF/DHF cases and climate variables during 2008 to 2015. There were 48 175 DF/DHF cases reported, and the highest number of cases occurred in November. There were significant correlations between monthly DF/DHF cases with monthly mean of evaporation ( r = 0.236, P 〈 .05), monthly relative humidity ( r = −0.358, P 〈 .05), and monthly total hours of sunshine ( r = 0.389, P 〈 .05). The results showed significant correlation in lag models but did not find direct correlations between monthly DF/DHF cases and monthly average rainfall and temperature. The study recommended that health staff in Hanoi should monitor DF/DHF cases at the beginning of epidemic period, starting from May, and apply timely prevention and intervention measures to avoid the spreading of the disease in the following months. A larger scale study for a longer period of time and adjusting for other potential influencing factors could better describe the correlations, modelling/projection, and developing an early warning system for the disease, which is important under the impacts of climate change and climate variability.
    Type of Medium: Online Resource
    ISSN: 1010-5395 , 1941-2479
    URL: Article
    DOI: 10.1177/1010539518790143
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2018
    detail.hit.zdb_id: 2394975-2
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  • 2
    Online Resource
    Online Resource
    Ảnh hưởng của mật độ nuôi đến tốc độ lọc của hàu Thái Bình Dương Crassostrea gigas (Thunberg, 1793)
    Trung tâm Nhiệt đới Việt - Nga ; 2022
    In:  Tạp chí Khoa học và Công nghệ nhiệt đới ( 2022-8)
    Details
    In: Tạp chí Khoa học và Công nghệ nhiệt đới, Trung tâm Nhiệt đới Việt - Nga, ( 2022-8)
    Abstract: Pacific Oysters (Crassostrea gigas) is an introduced species form Japan and is raised in Vietnam waters. Relatively little is known about effect of stocking density on oyster filtration rate. So, the goal of this study investigates the filtration rate of Pacific oyster based on variation of the oyster density. The study was carried out with adult oysters of similar shell size (range from: 7.0-9.8 cm; average: 8.28±0.51 cm) collected in Nha Phu lagoon, Khanh Hoa province. The first order kinetic model and the composite exponential kinetic model were used to estimate oyster filtration rate (FR) based on the reduction of algal density over time. In which, the composite exponential kinetic model is more suitable than the first order kinetic model to estimate the Pacific oyster filtration rate (provide algal once-initial). The results of both models showed that oysters at low density gave a better filtration rate than oysters at high density and that this filtration rate was maximum: 1.28 (L/hr/g dry).
    Type of Medium: Online Resource
    ISSN: 0866-7535
    URL: Journal
    URL: Article
    DOI: 10.58334/vrtc.jtst
    DOI: 10.58334/vrtc.jtst.n25.04
    Language: Unknown
    Publisher: Trung tâm Nhiệt đới Việt - Nga
    Publication Date: 2022
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    Online Resource
  • 3
    Online Resource
    Online Resource
    Fluctuation of associated microbial with building reef corals \(\textit{Acropora}\) sp. from Hang Rai, Ninh Thuan
    Publishing House for Science and Technology, Vietnam Academy of Science and Technology (Publications) ; 2022
    In:  Vietnam Journal of Marine Science and Technology Vol. 22, No. 2 ( 2022-06-21), p. 177-188
    Details
    In: Vietnam Journal of Marine Science and Technology, Publishing House for Science and Technology, Vietnam Academy of Science and Technology (Publications), Vol. 22, No. 2 ( 2022-06-21), p. 177-188
    Abstract: El Niño and the prolonged warm sea surface temperature significantly impacted coral reefs and caused coral bleaching in some parts of the world. This study evaluated the density of symbiotic algae and bacteria associated with the three coral species, namely Acropora hyacinthus, Acropora muricata, and Acropora robusta, collected in Hang Rai, Ninh Thuan in May, June, August 2016, and June 2017. The number of zooxanthellae with each coral species was statistically significant and correlated with several environmental factors, suggesting that symbiotic algae could play a key role in coral health. The number of associated microbial with the three coral species was significantly different; they tended to depend on sampling time rather than coral species-specific. At the time of ENSO (2016), the difference in the total associated bacteria with all three coral species was statistically significant. While the total number of related bacteria with all three species of coral collected in 2017 did not differ from the total of bacteria in ambient water. In conclusion, symbiotic algae tend to be species-specific, whereas bacteria fluctuate significantly over sampling time. Studying the molecular issues of microalgae, the presence, the role of some groups of bacteria involved in the N, C, P, and S cycles, and the influence of environmental parameters should also be encouraged to understand the relationship of coral holobiont better.
    Type of Medium: Online Resource
    ISSN: 1859-3097
    URL: Article
    DOI: 10.15625/1859-3097/17235
    Language: Unknown
    Publisher: Publishing House for Science and Technology, Vietnam Academy of Science and Technology (Publications)
    Publication Date: 2022
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  • 4
    Online Resource
    Online Resource
    Spatio - temporal variations of sea surface temperature in coastal waters of Khanh Hoa province (South Viet Nam) during the period of 2010-2019
    Viet Nam National University Ho Chi Minh City ; 2020
    In:  Science & Technology Development Journal - Engineering and Technology Vol. 3, No. 4 ( 2020-12-18), p. first-
    Details
    In: Science & Technology Development Journal - Engineering and Technology, Viet Nam National University Ho Chi Minh City, Vol. 3, No. 4 ( 2020-12-18), p. first-
    Abstract: Sea Surface Temperature (SST) is considered to be the most important parameter in oceanography. SST is not only an important physical parameter for studying the exchange of water vapor and heat between sea surface and atmosphere but also provides an useful index for oceanographic studies such as ocean circulation, water mass, ocean front, upwelling current, seawater mixing and ocean ecological environment. Empirical orthogonal function (EOF) and time series analysis was used to assess spatio-temporal variability of sea surface temperature in coastal waters of Khanh Hoa province (south Viet Nam) from Multi-scale Ultra-high Resolution Sea Surface Temperature (MUR SST) data for a period of 10 years (2010-2019). The first 4 EOF modes of SST explained 99.80% of the spatio-temporal variance in total variabilities. The first EOF mode explained 98.10% of the total variation of SST, representing the distribution and variability of SST in the summer with a decreasing trend from north to south. The second EOF mode explained 1,10% of the total variation of SST, representing the variation of the SST distribution in winter and spring with an increasing trend from shore to offshore. SST had a seasonal variation, it was highest in summer and lowest in winter. Trend analysis of SST time series in the past 10 years showed that SST increased 0,03oC/year in the period 1/2010-12/2019. The trend and the speed of increase/decrease of SST varied with each different period. The results of the study are useful documents to support the management and exploitation of marine ecosystems.
    Type of Medium: Online Resource
    ISSN: 2615-9872 , 2615-9872
    URL: Article
    DOI: 10.32508/stdjet.v3i4.750
    Language: Unknown
    Publisher: Viet Nam National University Ho Chi Minh City
    Publication Date: 2020
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  • 5
    Online Resource
    Online Resource
    Coral Mucus Is a Hot Spot for Viral Infections
    American Society for Microbiology ; 2015
    In:  Applied and Environmental Microbiology Vol. 81, No. 17 ( 2015-09), p. 5773-5783
    Details
    In: Applied and Environmental Microbiology, American Society for Microbiology, Vol. 81, No. 17 ( 2015-09), p. 5773-5783
    Abstract: There is increasing suspicion that viral communities play a pivotal role in maintaining coral health, yet their main ecological traits still remain poorly characterized. In this study, we examined the seasonal distribution and reproduction pathways of viruses inhabiting the mucus of the scleractinians Fungia repanda and Acropora formosa collected in Nha Trang Bay (Vietnam) during an 11-month survey. The strong coupling between epibiotic viral and bacterial abundance suggested that phages are dominant among coral-associated viral communities. Mucosal viruses also exhibited significant differences in their main features between the two coral species and were also remarkably contrasted with their planktonic counterparts. For example, their abundance (inferred from epifluorescence counts), lytic production rates (KCN incubations), and the proportion of lysogenic cells (mitomycin C inductions) were, respectively, 2.6-, 9.5-, and 2.2-fold higher in mucus than in the surrounding water. Both lytic and lysogenic indicators were tightly coupled with temperature and salinity, suggesting that the life strategy of viral epibionts is strongly dependent upon environmental circumstances. Finally, our results suggest that coral mucus may represent a highly favorable habitat for viral proliferation, promoting the development of both temperate and virulent phages. Here, we discuss how such an optimized viral arsenal could be crucial for coral viability by presumably forging complex links with both symbiotic and adjacent nonsymbiotic microorganisms.
    Type of Medium: Online Resource
    ISSN: 0099-2240 , 1098-5336
    URL: Article
    DOI: 10.1128/AEM.00542-15
    RVK:
    WA 15000
    Language: English
    Publisher: American Society for Microbiology
    Publication Date: 2015
    detail.hit.zdb_id: 223011-2
    detail.hit.zdb_id: 1478346-0
    SSG: 12
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  • 6
    Online Resource
    Online Resource
    High occurrence of viruses in the mucus layer of scleractinian corals
    Wiley ; 2014
    In:  Environmental Microbiology Reports Vol. 6, No. 6 ( 2014-12), p. 675-682
    Details
    In: Environmental Microbiology Reports, Wiley, Vol. 6, No. 6 ( 2014-12), p. 675-682
    Abstract: Viruses attract increasing interest from environmental microbiologists seeking to understand their function and role in coral health. However, little is known about their main ecological traits within the coral holobiont. In this study, a quantitative and qualitative characterization of viral and bacterial communities was conducted on the mucus of seven different coral species of the V an P hong Bay ( V ietnam). On average, the concentrations of viruses and bacteria were, respectively, 17‐ and twofold higher in the mucus than in the surrounding water. The examination of bacterial community composition also showed remarkable differences between mucus and water samples. The percentage of active respiring cells was nearly threefold higher in mucus (m = 24.8%) than in water (m = 8.6%). Interestingly, a positive and highly significant correlation was observed between the proportion of active cells and viral abundance in the mucus, suggesting that the metabolism of the bacterial associates is probably a strong determinant of the distribution of viruses within the coral holobiont. Overall, coral mucus, given its unique physicochemical characteristics and sticking properties, can be regarded as a highly selective biotope for abundant, diversified and specialized symbiotic microbial and viral organisms.
    Type of Medium: Online Resource
    ISSN: 1758-2229 , 1758-2229
    URL: Issue
    URL: Article
    DOI: 10.1111/emi4.2014.6.issue-6
    DOI: 10.1111/1758-2229.12185
    Language: English
    Publisher: Wiley
    Publication Date: 2014
    detail.hit.zdb_id: 2485218-1
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  • 7
    Online Resource
    Online Resource
    Processes and Capacity-Building Benefits of Lay Health Worker Outreach Focused on Preventing Cervical Cancer Among Vietnamese
    SAGE Publications ; 2006
    In:  Health Promotion Practice Vol. 7, No. 3_suppl ( 2006-07), p. 223S-232S
    Details
    In: Health Promotion Practice, SAGE Publications, Vol. 7, No. 3_suppl ( 2006-07), p. 223S-232S
    Abstract: The authors organized a lay health worker (LHW) outreach program with Vietnamese women that produced significant increases in Pap testing. The program was conducted by five partner agencies and 50 LHWs and involved 1,005 women. This article reports on the roles of the agencies and coordinators, the selection of LHWs, the processes LHWs used in identifying and recruiting participants, the ways they conducted their outreach work, and their strategies for maintaining participation. The article also reports on the LHWs’ perspectives about how they benefited and what they found to be most rewarding and challenging about being a LHW. Based on the analysis of this information, the authors present a conceptual framework for understanding how different contextual factors shape the processes and capacity-building benefits of LHW outreach, describing four contextual domains that shape LHW outreach: the sociocultural domain and organizational domain, which overlap in the programmatic domain, all of which are framed by the structural domain. This analysis provides an approach for understanding how lay health work is shaped by a broader context.
    Type of Medium: Online Resource
    ISSN: 1524-8399 , 1552-6372
    URL: Article
    DOI: 10.1177/1524839906288695
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2006
    detail.hit.zdb_id: 2036801-X
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  • 8
    Online Resource
    Online Resource
    The Impact of Institutional Distance on the Choice of Multinational Enterprise’s Entry Mode: Theory and Empirical Evidence from Vietnam
    Univ. of Malaya ; 2018
    In:  Asian Journal of Business and Accounting Vol. 11, No. 1 ( 2018-6-29), p. 71-96
    Details
    In: Asian Journal of Business and Accounting, Univ. of Malaya, Vol. 11, No. 1 ( 2018-6-29), p. 71-96
    Type of Medium: Online Resource
    ISSN: 1985-4064 , 2180-3137
    URL: Issue
    URL: Journal
    URL: Article
    DOI: 10.22452/ajba.vol11no1
    DOI: 10.22452/ajba
    DOI: 10.22452/ajba.vol11no1.3
    Language: Unknown
    Publisher: Univ. of Malaya
    Publication Date: 2018
    detail.hit.zdb_id: 2945283-1
    SSG: 3,2
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  • 9
    Online Resource
    Online Resource
    Analysis of Factors Affecting Intention to Use the Momo Ewallet Services: The Case of Customers in Cantho City
    Thuongmai University ; 2021
    In:  Journal of Trade Science
    Details
    In: Journal of Trade Science, Thuongmai University
    Abstract: This study aims to analyze the factors affecting customers' intention to use the MoMo e-wallet services in Can Tho city by applying the Exploratory Factor Analysis (EFA) method, based on data from 150 survey samples, including customers who used and have been using MoMo e-wallet service. The results highlight the impact of a number of factors on customers' intention to use the MoMo e-wallet services in Can Tho city, of which the most influencing factor is Perceived usefulness and ease of use, followed by Perceived trust, Social influence; Perceived cost has the opposite impact of the decision to use MoMo e-wallet services. For demographic factors, the ANOVA test indicates that there is no difference in intention to use among customers’ gender, age, occupation, education level and average income.
    Type of Medium: Online Resource
    ISSN: 2815-5793
    URL: Journal
    URL: Article
    DOI: 10.54404/JTS
    DOI: 10.54404/jts.2021.9.04.10
    Language: English
    Publisher: Thuongmai University
    Publication Date: 2021
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  • 10
    Online Resource
    Online Resource
    A Novel: Low-cost Method for the Isolation of Anaerobic Hydrogen Producing Bacteria
    IOP Publishing ; 2023
    In:  IOP Conference Series: Earth and Environmental Science Vol. 1216, No. 1 ( 2023-07-01), p. 012031-
    Details
    In: IOP Conference Series: Earth and Environmental Science, IOP Publishing, Vol. 1216, No. 1 ( 2023-07-01), p. 012031-
    Abstract: The hydrogen content of the two sludge samples namely TDS and PLS were increased after the heat shock pretreatment from 239.23 ± 10.23 mL/L to 663.87 ± 15.99 mL/L at 80°C and from 173.61 ± 17.21 mL/L to 496.74 ± 30.21 mL/L at 60°C, respectively. Polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) indicated that Enterococcus and Clostridium were the dominant bacteria in the TDS and PLS consortium. Two strains were successfully isolated from TDS and PLS using a simple method. Based on Bergey’s key identification and 16S rDNA sequencing, they were identified as Clostridium butyricum strain TD and Clostridium acetobutylicum strain PL. The hydrogen content, glucose consumed yield, and hydrogen yield of C. butyricum TD and C. acetobutylicum PL were 545.24 ± 7.31 mL/L, 90 ± 0.41 %, 0.89 ± 0.01 mol H 2 /mol glucose, and 729.34 ± 22.81 mL/L, 92.77 ± 1.39 %, 1.26 ± 0.05 mol H 2 /mol glucose, respectively.
    Type of Medium: Online Resource
    ISSN: 1755-1307 , 1755-1315
    URL: Article
    DOI: 10.1088/1755-1315/1216/1/012031
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2023
    detail.hit.zdb_id: 2434538-6
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