Browsing by Author Dang, Mai

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  • TC_02578.pdf.jpg
  • Article


  • Authors: Nguyen,  Thanh Lan; Tran, Nghi; Dang, Mai; Dinh, Xuan Thanh (2007)

  • There are five Quaternary sedimentary sequences in the Red River Delta, Vietnam. The  forming of each sequence is related to transgression and regression phases. The sequences, which was formed in transgression period, composed mainly of fine grained size leading to the water bearing capacity is very low and plays a role as aquicludes. Bsides, in these fine grain size layers, the contents of arsenic and iron are high, especially in dark clay, silty clay rich in organic material of swamp facies and brown, dark brown clay of flood facies so that they are stated as a source of arsenic  contamination  in  the  roundwater.  For  the  sequences  formed  in  regression  period composed main...

  • Diversifying Quang Binh tourism for a sustainable development orientation.pdf.jpg
  • Working Paper


  • Authors: Tran, Nghi; Dang, Mai; Nguyen, Dinh Thai; Dinh, Xuan Thanh; Nguyen, Thanh Lan; Nguyen, Thi Hong (2012)

  • Tourism potential of Quang Binh province is abundant and diversity in typical sites such as white beautiful sandy beaches, the World heritage Phong Nha – Ke Bang and folk cultural types, national historical sites etc. Based on natural geographical, economical, social contidions. Quang Binh province is divided into 5 toursim center which is very specified by typical tourist types for each of them:- Phong Nha – Ke Bang center includes cave tour, Toi cave tour, telpher tour, climbing moutain in advanture tourist tour, fishing tour, yatch on Gianh river tour, ecological and geopark tour, 8 youth volunteer cave tour. - Dong Hoi center includes beaches tours, sandy bars tours, ecologi...

  • Geochemical characteristics of Quaternary sediments in the Hanoi area.pdf.jpg
  • Article


  • Authors: Dang, Mai; Nguyen, Thuy Duong; Tong, Thi Thu Ha; Dang, Quang Khang; Nguyen, Van Niem; Dinh, Xuan Thanh (2012)

  • 17 samples collected from two drill holes (QO.01 and QO.03) at Quoc Oai (Hanoi) were analysed the main chemical compositions in oxides SiO2, TiO2, Al2O3, Fe2O3, MnO, MgO, CaO, Na2O, K2O by XRF method and some trace metal elements such as As, Cu, Pb, Zn, Sb, V, Cr, Ni, Cd by AAS method. According to these results, content of SiO2, Al 2O3, Fe2O3 are the highest, the next is K2O, TiO2and the other oxides are very low. The sediments in the Vinh Phuc formation have rich Fe 2O3by laterization, whereas those in the Hai Hung formation have rich K2O by the potassium-absorption in the organic matters. In thesediments, there are close relationship between the alkaline and alkaline earth elem...

  • Projections for Quang Binh tourism and solutions for a sustainable economic development.pdf.jpg
  • Article


  • Authors: Tran, Nghi; Dang, Mai; Ta, Hoa Phuong; Dinh, Xuan Thanh; Nguyen, Dinh Thai; Nguyen, Thanh Lan; Nguyen, Thi Hong (2011)

  • Today, Quang Binh province is focusing its economic development on tourism industry. However, Quang Binh so far has not owned any concrete tourism projection for each region of the province as well as any overall economic projection for the province. Therefore in this article, the group of authors starts out to put forth projections for the province’s economic development based on a panorama of sustainable economic development. The projection’s basis mainly depends on the important tourism resource patterns: world natural heritage, projections for woodlands outside the heritage, projections for an agricultural zone,projections for an industrial urban zone, projections for...

  • TC_02575.pdf.jpg
  • Article


  • Authors: Dang, Mai; Nguyen, Thanh Lan  (2007)

  •  Quantitative distribution of main ions and other chemical components of groundwater  are characterized by theirs statistical parameters. They depend closely on probability distribution of the data. In this paper, by  rocessing 760 analysis results of groundwater samples issued by Department of Geology and Minerals of Vietnam, and by using frequency analysis techniques, the authors show that the distribution of bicarbonate and calcium ions in Pleistocene and Holocene  aquifer in the Red River Delta (RRD) are in accordance with normal distribution, while other ions are in accordance with skew distribution. In the first case, the value of mean equals the value of median, but in the se...

  • TC_02572.pdf.jpg
  • Article


  • Authors: Tran, Nghi; Nguyen, Thanh Lan; Nguyen, Dinh Thai; Dang, Mai; Dinh, Xuan Thanh (2007)

  • Recently, tourism activities in Quang Binh Provincehave been growing rapidly, especially since the Phong Nha - Ke Bang National Park was certified as the World Natural Heritage in 2004. Among the tourist sites of Quang Binh, Phong Nha and Dong Hoi tourism centers are the two places which attract the largest numbers of visitors. The rapid but unplanned tourism activities have been creating various social and environmental concerns. If appropriate planning measures are not derived from the consideration of the carrying capacities of these sites, tourism centers will be overloaded, tourism quality will bedegraded and therefore the benefit obtained from tourism activities will be redu...

Browsing by Author Dang, Mai

Jump to: 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
or enter first few letters:  
Showing results 1 to 7 of 7
  • TC_02578.pdf.jpg
  • Article


  • Authors: Nguyen,  Thanh Lan; Tran, Nghi; Dang, Mai; Dinh, Xuan Thanh (2007)

  • There are five Quaternary sedimentary sequences in the Red River Delta, Vietnam. The  forming of each sequence is related to transgression and regression phases. The sequences, which was formed in transgression period, composed mainly of fine grained size leading to the water bearing capacity is very low and plays a role as aquicludes. Bsides, in these fine grain size layers, the contents of arsenic and iron are high, especially in dark clay, silty clay rich in organic material of swamp facies and brown, dark brown clay of flood facies so that they are stated as a source of arsenic  contamination  in  the  roundwater.  For  the  sequences  formed  in  regression  period composed main...

  • Diversifying Quang Binh tourism for a sustainable development orientation.pdf.jpg
  • Working Paper


  • Authors: Tran, Nghi; Dang, Mai; Nguyen, Dinh Thai; Dinh, Xuan Thanh; Nguyen, Thanh Lan; Nguyen, Thi Hong (2012)

  • Tourism potential of Quang Binh province is abundant and diversity in typical sites such as white beautiful sandy beaches, the World heritage Phong Nha – Ke Bang and folk cultural types, national historical sites etc. Based on natural geographical, economical, social contidions. Quang Binh province is divided into 5 toursim center which is very specified by typical tourist types for each of them:- Phong Nha – Ke Bang center includes cave tour, Toi cave tour, telpher tour, climbing moutain in advanture tourist tour, fishing tour, yatch on Gianh river tour, ecological and geopark tour, 8 youth volunteer cave tour. - Dong Hoi center includes beaches tours, sandy bars tours, ecologi...

  • Geochemical characteristics of Quaternary sediments in the Hanoi area.pdf.jpg
  • Article


  • Authors: Dang, Mai; Nguyen, Thuy Duong; Tong, Thi Thu Ha; Dang, Quang Khang; Nguyen, Van Niem; Dinh, Xuan Thanh (2012)

  • 17 samples collected from two drill holes (QO.01 and QO.03) at Quoc Oai (Hanoi) were analysed the main chemical compositions in oxides SiO2, TiO2, Al2O3, Fe2O3, MnO, MgO, CaO, Na2O, K2O by XRF method and some trace metal elements such as As, Cu, Pb, Zn, Sb, V, Cr, Ni, Cd by AAS method. According to these results, content of SiO2, Al 2O3, Fe2O3 are the highest, the next is K2O, TiO2and the other oxides are very low. The sediments in the Vinh Phuc formation have rich Fe 2O3by laterization, whereas those in the Hai Hung formation have rich K2O by the potassium-absorption in the organic matters. In thesediments, there are close relationship between the alkaline and alkaline earth elem...

  • Projections for Quang Binh tourism and solutions for a sustainable economic development.pdf.jpg
  • Article


  • Authors: Tran, Nghi; Dang, Mai; Ta, Hoa Phuong; Dinh, Xuan Thanh; Nguyen, Dinh Thai; Nguyen, Thanh Lan; Nguyen, Thi Hong (2011)

  • Today, Quang Binh province is focusing its economic development on tourism industry. However, Quang Binh so far has not owned any concrete tourism projection for each region of the province as well as any overall economic projection for the province. Therefore in this article, the group of authors starts out to put forth projections for the province’s economic development based on a panorama of sustainable economic development. The projection’s basis mainly depends on the important tourism resource patterns: world natural heritage, projections for woodlands outside the heritage, projections for an agricultural zone,projections for an industrial urban zone, projections for...

  • TC_02575.pdf.jpg
  • Article


  • Authors: Dang, Mai; Nguyen, Thanh Lan  (2007)

  •  Quantitative distribution of main ions and other chemical components of groundwater  are characterized by theirs statistical parameters. They depend closely on probability distribution of the data. In this paper, by  rocessing 760 analysis results of groundwater samples issued by Department of Geology and Minerals of Vietnam, and by using frequency analysis techniques, the authors show that the distribution of bicarbonate and calcium ions in Pleistocene and Holocene  aquifer in the Red River Delta (RRD) are in accordance with normal distribution, while other ions are in accordance with skew distribution. In the first case, the value of mean equals the value of median, but in the se...

  • TC_02572.pdf.jpg
  • Article


  • Authors: Tran, Nghi; Nguyen, Thanh Lan; Nguyen, Dinh Thai; Dang, Mai; Dinh, Xuan Thanh (2007)

  • Recently, tourism activities in Quang Binh Provincehave been growing rapidly, especially since the Phong Nha - Ke Bang National Park was certified as the World Natural Heritage in 2004. Among the tourist sites of Quang Binh, Phong Nha and Dong Hoi tourism centers are the two places which attract the largest numbers of visitors. The rapid but unplanned tourism activities have been creating various social and environmental concerns. If appropriate planning measures are not derived from the consideration of the carrying capacities of these sites, tourism centers will be overloaded, tourism quality will bedegraded and therefore the benefit obtained from tourism activities will be redu...