Tổng hợp tài liệu Khối Ngành Xã Hội tham khảo cho học sinh, sinh viên.
Water quality and biological characteristics of phytoplankton in the central coastal region has been studied based on the five years monitoring data (from 2006 to 2010). For water quality, the main pollutants are COD and oil and grease which had concentrations exceeded the standard values. Phytoplankton taxonomy analysis reveals that there were ...
8 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 550 | Lượt tải: 0
Preliminary evaluation situation of the using and the role of the food plant species in Xuan Nha Nature reserve, Son La province as follow: 100% of the interviewees knew how to exploit the edible plants in the wild. Time for harvesting species collected in whole the year take the most (40.7%). There are many different ways to use in each ethnic....
7 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 546 | Lượt tải: 0
Quang Nam Province is located at an active tectonic area. Land cracking hazard occur with increasing scale and cause damage to lives of local residents. This paper presents the situation and land cracking zoning investigation as a basis for rational use of territory and to prevent disasters. - In the Quang Nam Province there are about 76 lan...
9 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 510 | Lượt tải: 0
The application of two (or more) global positioning systems offers many practical benefits. In recent times, outside the GPS, GLONASS system was developed, to meet the surveying, navigation requirements, so the GLONASS data processing has become necessary. In this paper, some GLONASS data of IGS sites have been processed by Bernese software. ...
5 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 544 | Lượt tải: 0
The Binh Dai Formation was established by analysis results of the BT3 borehole of KC09.06/06- 10 project, in Ba Tri commune - Binh Dai district of Ben Tre province. The sedimentary of Binh Dai Formation has identified Early Holocene age that was formed at the coastal estuarine environment ( ), distributed inside the borehole at the depth fro...
8 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 539 | Lượt tải: 0
Originating source of groundwater reserve is not only one of research speciality in hydrogeology, but also an important information for groundwater resources exploitation management and protection. Based on existing research results, this paper deals with analysing and determining main natural and artificial factors which have deciding role in f...
9 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 504 | Lượt tải: 0
In Vietnam, sericite has been interested in as a potential industrial material. This study discusses some issues on composition and characteristic of sericite following with clarifying concept of “sericite” in the international nomenclature of micas and suggests a name “di-vermiculit” (in Vietnamese) for main mineral of sericite. Some charac...
8 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 696 | Lượt tải: 0
Toc Tat manganese deposit is of neritic origin, the manganese ores were formed by sedimentary process and alterated by later weathering process. Using many modern methods, this research presents in detail geochemical-mineralogical characteristics of manganese ores in the Toc Tat area. The manganese minerals include pyrolusite, hollandite and ...
10 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 639 | Lượt tải: 0
The Cho Don lead-zinc deposits are situated at the southwest of Cho Don district, about 7 km from the centre. These deposits are sphalerite-galenitepyrite type, occured in middle Paleozoic terrigenous carbonate rocks. They are polymetallic vein type. Ore minerals consist of sphalerite, galenite, pyrite, chalcopyrite, pyrrhotite, arsenopyrite, ...
9 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 575 | Lượt tải: 0
By-products in lead-zinc ores are diversify, depending on ore types: Cho Don type - Cd, In, Ag, As, Cu, Sn, Ga ; Cho Dien type - Cd, In, Ag, Cu, Ga ; Lang Hich type - Cd, Ag ; Na Son type : Cd, Ag, Cu, Ga, REE. Detailed mineralogical investigation reveals that by-product elements are mainly associated with inclusions and isomorphous substitut...
10 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 540 | Lượt tải: 0
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