Tổng hợp tài liệu Địa Lý tham khảo cho học sinh, sinh viên.
Data on the water quality at coastal area of Phu Quoc island achieved in May 2010 (dry season) and August 2010 (rainy season) showed that DO concentrations were relatively abundant (>5mg/l), values of BOD5 (<1.96mg/l), COD (<12.5mg/l) and TSS (<42mg/l) were moderate. Concentrations of ammonia (from 0 to 29µgN/l), phosphate (from 4.9 to 17.1µgP/l...
9 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 580 | Lượt tải: 0
Từ các kết quả trình bày trên đây có thể đưa ra một số nhận xét về sự phân bố của PAHs trong trầm tích khu vực nghiên cứu như sau: Hàm lượng tổng 8 PAHs dao động từ 69,56 µg/kg tại trạm Trà Cổ đến 183,88µg/kg tại trạm Cửa Lò. Hàm lượng tổng PAHs tăng dần từ Bắc vào Nam (từ Trà Cổ tới Cửa Lò). Mùa khô hàm lượng PAHs cao hơn mùa mưa 1,1 - 1,9 ...
5 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 684 | Lượt tải: 0
Based on the statistic data of social-economic present and development planning to 2020 of Thua Thien Hue province, land-base pollution load from development activities has been calculated by using the rapid assessment of the marine coastal environment method. The calculating results shown that, each year, development activities in Thua Thien Hu...
8 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 688 | Lượt tải: 0
In order to understand the present status of heavy metal contamination in Haiphong coast, rocky oyster (Saccostrea glomerata) and hard clam (Meretrix lyrata) were examined. The concentration of nine elements (As, Cd, Mn, Cr, Co, Cu, Pb, V and Zn) was determined in whole tissues of these species from Phu Long, Do Son and Quan Muc in March 2012. T...
8 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 615 | Lượt tải: 0
The experiment of making fishsource using a TTX-bearing puffer Toquigener gloerfelti as a material was conducted during 12 months in order to observe a trend of toxicity in the fishsource product. The result showed that toxicity had been decreased by time and after 12 months; about 86.43 - 93.93 % of initial toxicity was disappeared. The reason ...
5 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 653 | Lượt tải: 0
Coral is an invaluable source in the medical and pharmaceutical industries, in which lipids play a role as a major nutrient reserves and the energy for coral. In this paper, we focus on researching the content and composition of lipid and fatty acids of 8 coral species from Vietnam. The total lipid of studied samples ranged from 10.1 to 20.4%; T...
6 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 669 | Lượt tải: 0
Shrimp scad Alepes djeddaba is an important small pelagic species in Viet Nam, which contributes a large part of the fisheries resources. The main objective of this study was to establish an empirical estimate of the relation between target strength and length of shrimp scad at 38kHz, which can be served for assessments of these resources using ...
8 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 526 | Lượt tải: 0
Grouper seed harvested from wild sources provide importantly for the development of commercial marine fish farming. The grouper fingerling exploitation in the Gulf of Quy Nhon initially identified five species, including Banded grouper (Epinephelus amblycephalus), Yellow grouper (Epinephelus awoara), Longtooth grouper (Epinephelus bruneus), Mala...
9 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 683 | Lượt tải: 0
The South and South-central Vietnam continental shelf is a region with the diversely complicated conditions of geology. In spite of over the past many years of investigation, the fault systems in many places have remained poorly understood. In this paper, the author has studied and applied some techniques for interpretation of the newest gravity...
7 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 668 | Lượt tải: 0
This paper presents the results of numerical experiments of waves and a combined seawall interaction using a numerical wave channel. Firsly, the concept of numerical wave channel and the foudation for buiding a numerical wave channel is presented. Then, the experimental conditions for both numerical experiment and laboratory one are described. T...
7 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 488 | Lượt tải: 0
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