Tổng hợp tài liệu Địa Lý tham khảo cho học sinh, sinh viên.
Waterfalls and river rapids are the forms of natural resources which play significant role for socio-economic development and they are related to the scientific and technical fields such as Geology, Geomorphology, Geography, Hydrology, Hydro Power, Water resources, Fisheries, Natural resources and Environment and Tourism, etc. The characteristics...
11 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 575 | Lượt tải: 0
This paper presents the results of isotopic hydrogeological studies in the years from 2010 to 2012 to evaluate the hydraulic system and the change of the hydraulic relationship between aquifers in Nam Dinh Province. Using isotopes of water such as Deuteri (2H), Oxygen 18 (18O), Tritium (3H) and the Carbon 14 (14C) in the total dissolved inorganic...
10 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 545 | Lượt tải: 0
On the basis of studies to assess the status and impact factors arising landslides, partitioning allows warned the risk of landslides in the mountainous districts of Quang Ngai province. - On the mountainous province of Quang Ngai distributed sliding block 809, they form bands running under the sublatitude, sublongtitude and the NE-SW with slidi...
13 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 691 | Lượt tải: 0
Huong Son and Ky Anh districts are located in Ha Tinh province where are two sericite mineralization areas discovered, in Son Binh (Huong Son district) and Ky Tay (Ky Anh district). One of them, the sericite resource of Son Binh deposit, is hypothetically estimated about 2,79 million tons. Hydrothermal alterations, mostly sericitization of rhyoli...
12 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 565 | Lượt tải: 0
Vitamin is one of the most important nutrient components having strong effects on growth, survival rate and food conversion ratio in marine finfish in general and in snubnose pompano in particular. In this study, 3 levels of vitamin D3 (100, 115 and 130mg/kg dry feed) and a control treatment (0mg/kg dry feed) were tested in order to evaluate the...
7 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 552 | Lượt tải: 0
Based on the collected and investigated data in the period of 2011-2012 and the plan of socio-economic development of the Thuy Trieu - Cam Ranh coastal areas, this paper estimates the water’s environmental carrying capacity to manage them for sustainable development. The results show that, the volume of organic matter (by COD) met the potential ...
11 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 768 | Lượt tải: 1
Dung Quat economic zone is a major industrial zone in Vietnam. It belongs to Quang Ngai province in Central Vietnam. Until now, there have been few studies on seaweeds at Dung Quat. This article presents results of two field surveys, conducted in February, 2012 and September, 2012 under the research project “Surveying and assessing status of bio...
7 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 605 | Lượt tải: 0
The integrated assessment of natural conditions and resources to orient for the development of offshore waters and islands is a new field of research that has not been much interested in Vietnam. First of all, due to the characteristics of offshore waters and islands, applying the assessment process and methods that was carried out successfully ...
11 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 638 | Lượt tải: 0
Among the tsunami source zones defined in the East Vietnam sea region, the Manila trench, west of the Philippines is considered as the most dangerous for the Vietnamese coast. The recent research results show that the maximum expected earthquake magnitude for the Manila Trench source zone may reach to the value of Mw = 8.7, and it takes approxim...
10 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 653 | Lượt tải: 0
Four common coral genera in culture conditions are Symphyllia, Plerogyra, Euphyllia and Goniopora. They are long/large polyp stony corals, sexual and asexual reproduction. Except Symphyllia, the three genera are aggressive towards the other marine aquarium invertebrates. All of the four coral genera have 2 feeding modes: autotrophic mode through...
8 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 616 | Lượt tải: 0
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