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    Wyświetlanie 1-4 z 4
    Tytuł:
    Establishing the Vertical Movement Map of Cuu Long Delta River by GNSS Data
    Autorzy:
    Nguyen, Gia Trong
    Nguyen, Viet Nghia
    Ly, Lam Ha
    Vu, Trung Dung
    Nguyen, Quoc Long
    Kim, Thi Thu Huong
    Pham, Ngoc Quang
    Nguyen, Viet Quan
    Powiązania:
    https://bibliotekanauki.pl/articles/27323240.pdf
    Data publikacji:
    2023
    Wydawca:
    Polskie Towarzystwo Przeróbki Kopalin
    Tematy:
    land subsidence
    GNSS
    vertical crustal deformation
    Mekong delta
    deformacje
    delta Mekongu
    Opis:
    Mekong Delta is an area with an important position in the socio-economic development of Vietnam. However, due to the impact of climate change as well as of the construction of hydroelectric dams in the upstream of the Mekong River in recent years, saline intrusion and flooding have been occurred because of high tide. According to published researches, the Mekong Delta is being experienced surface subsidence with a rate of up to centimeters per year, that exacerbates the impact of saline intrusion and flooding. Thus, studying to establish the surface subsidence map is an urgent need in this site. There are many of technologies to create the vertical movement map such as: Levelling, INSAR, GNSS, etc. Up to now, there are no scientific reports on the application of GNSS to monitor the vertical movement in this area. In this paper, the authors have calculated the largest vertical displacement velocity up to 3cm/year based on processing GNSS observations of nearly 20 GNSS monitoring station in the area using Bernese software. From these results, the research team has made the vertical movement map of Mekong, Vietnam.
    Źródło:
    Inżynieria Mineralna; 2023, 2; 173--177
    1640-4920
    Pojawia się w:
    Inżynieria Mineralna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Development of Support Plan and Operation Scheme for Semi-mechanized Longwall Face of Coal Seam 10T, Nam Khe Tam Mine – 86 Company, Dong Bac Corporation
    Autorzy:
    Vu, Trung Tien
    Le, Tien Dung
    Vu, Thai Tien Dung
    Powiązania:
    https://bibliotekanauki.pl/articles/2020148.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Przeróbki Kopalin
    Tematy:
    mining technology
    semi-mechanized
    hydraulic prop
    box bar
    operation scheme
    support plan
    górnictwo
    technologia
    zarządzanie
    Opis:
    Support plans and operation schemes of mine faces are critical technical documents in underground coal mining management. The development and selection of a reasonable support plan and operation scheme of the face are complicated because they involve many factors. In specific mining conditions, developing and selecting an appropriate support plan and operation scheme will improve the working efficiency of equipment, increase labor productivity, and ensure workers' safety. This article researched a mining technology for the thin seams, focusing on coal seam 10T in Nam Khe Tam coal mine, 86 Coal Company. From the analysis of geo-mining conditions, the article developed and selected a reasonable support plan and operation scheme for the face in coal seam 10T. After being used in the field, the support plan and operation scheme have brought the face efficiency and safety.
    Źródło:
    Inżynieria Mineralna; 2021, 2; 321--330
    1640-4920
    Pojawia się w:
    Inżynieria Mineralna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of social marketing on attitudes and behavior related to road traffic in Hanoi city
    Autorzy:
    Nhung, Ngo Thi Hong
    Hai, Do Huu
    Dung, Vu Tri
    Thong, Le Ngoc
    Trung, Pham Quang
    Cuong, Nguyen Hung
    Powiązania:
    https://bibliotekanauki.pl/articles/27314064.pdf
    Data publikacji:
    2023
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    social marketing
    attitude
    behavior
    road traffic
    marketing społeczny
    postawa
    zachowanie
    ruch drogowy
    Opis:
    Dangerous and risky actions while traveling on traffic routes that threaten the health, spirit and life of vehicle drivers and others. However, to raise community awareness, make them care about traffic safety behavior takes time and influence attitudes to create behavior change in a sustainable way. Research based on Ajzen’s theory of planned behavior [1, 2] and the theory of social marketing was conducted to identify the factors influencing the road traffic attitudes and behaviors of people in Hanoi and the degrees of their influence. The results show that road traffic attitudes are affected, in descending order, by partnership, resources, distribution, promotion, price, product, and public. The road traffic behavior of people is determined, in descending order, by age, moderator variables (the law and the validity of the law and weather), attitude, and education level. Based on the results, several recommendations to government officials and policymakers have been made.
    Źródło:
    Transport Problems; 2023, 18, 1; 193--202
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sediment discharge and storage over the last deglacial highstand period on the central Vietnam shelf off Nha Trang
    Autorzy:
    Dung, Bui Viet
    Stattegger, Karl
    Kieu, Nguyen Van
    Thanh, Nguyen Trung
    Thong, Bui Xuan
    Vu, Pham Nguyen Ha
    Man, Ha Quang
    Trang, Pham Hong
    Powiązania:
    https://bibliotekanauki.pl/articles/2058662.pdf
    Data publikacji:
    2019
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    sediment budget
    Nha Trang shelf
    central Vietnam
    Holocene highstand
    sequence stratigraphy
    Opis:
    A sediment budget for the central Vietnam shelf off Nha Trang over the last deglacial Holocene highstand period has been investigated on the basis of shallow seismic and sediment core data and empirical equations. The annual suspended sediment discharge to the Nha Trang shelf ranges from: 4.3 to 5.4 Mt/year. Estimates based on published empirical equations suggest that the sediment discharge by three main local mountainous rivers (the Cai, Dinh and Van Phong rivers) that enter the Nha Trang shelf ranges between 1.7 and 4 Mt/year, which implies that the local rivers discharge approximately 75% of the total annual sediment input to the shelf. The annual sediment supply of the Cai River is approximately 2 and 6 times higher than that of the Dinh and Van Phong rivers, respectively. The highstand sediment depocentre of the Nha Trang shelf is mostly attached to the local river outflows, indicating their importance as the principal sediment supply sources to the shelf. Additional sources of sediment supply to the Nha Trang shelf can probably be related to along-shore transport from the nearby shelves. Calculations based on seismic and sediment core data indicate that the net sediment volume storage on the Nha Trang shelf is approximately 2.15 Mt/year. Approximately 50% of the total sediment yield supplied to the shelf is probably transported along-shore to the south. The sediment budget model for highstand deposits on the Nha Trang shelf is typical for a small mountainous river basin, which is significantly different from that of the large river delta systems in Vietnam such as the Mekong and Red rivers where 90% of the river sediments are captured on the delta plain/subaqueous part and only 10% of the river sediments are transported to the nearby shelf. In contrast, most of the sediments supplied by small mountainous rivers off Nha Trang are transported to the mid-shelf, forming a shore-parallel mud depocentre.
    Źródło:
    Geological Quarterly; 2019, 63, 2; 395--406
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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