Tài liệu Báo cáo " Occurrences of microcystis spp and microcystins in some cyanobacterial blooms in freshwater bodies in Vietnam " docx

... VNU Journal of Science, Natural Sciences and Technology 26 (2010) 172-177 172 Occurrences of microcystis spp. and microcystins in some cyanobacterial blooms in freshwater bodies in Vietnam Nguyen ... biomass of Microcystis and microcystins concentration in the same sample. Keywords: cyanobacteria, microcystins, ELISA, freshwaters, Vietnam. 1....

Ngày tải lên: 12/02/2014, 17:20

... (in Vietnamese). [3] Forest Inventory and Planning institute, Vietnam Forest Trees, Agriculture Publishing House, Hanoi, 1971-1988 (in Vietnamese). [4] The Center for Natural Resources and ... 2005 and 2006. As a result of the identification of the plant specimens, 154 families, 425 genera, and 721 species were determined. Nine of the 721 species belonging to the Lyc...

Ngày tải lên: 12/02/2014, 10:20

... sucrose, nitrogen, auxin, and cytokinin. 1. Introduction ∗ ∗∗ ∗ Vietnamese ginseng was found at highland of Central Vietnam in 1973, and was regarded as a new species as Panax vietnamensis Ha ... to increase biomass and ginsenoside yield of Ngoc Linh ginseng cell culture. 2. Materials and methods Induction of callus Fresh mountain ginseng roots were collected from N...

Ngày tải lên: 12/02/2014, 10:20

... blood glucose and insulin concentration unusually increase in obese mice in comparison with the control (ND mice). Namely, blood glucose level increased by 48.11% and plasma insulin icreased ... Therefore, obesity and insulin resistance were the important causes of diabetes. 3.3. Effect of the extract fractions on blood fasting glucose level and plasma insulin secretio...

Ngày tải lên: 12/02/2014, 17:20

... of wastewater were studied. The result in Table 1 showed that pH of influent effected to sulfur removal process. The odor intensity is increased with decreasing of pH, it may due to the incompletely ... reached to B class of TCVN 5945-2005. After combination of results in tables 2, 3 and 4 we demonstrate that 120 mg/l of CaOCl 2 and 4 g/l of CaO is the best condit...

Ngày tải lên: 12/02/2014, 17:20

... transport, cleaning and degassing of the electrode surface, and an increased reaction rate [15]. In this paper, we report the use of the sonoelectrochemical method for the preparation of FePt nanoparticles. ... small domains of pure Fe and Pt. The formation of FePt by electrodeposition was not occurred and may be ascribed to the large difference in the standard electro...

Ngày tải lên: 13/02/2014, 03:20

... used program Origin 7.5 to analyze the doublet 701.7 cm -1 of thin film WO 3 /ITO 300nm and investigated XRD and Raman spectra of WO 3 /ITO 350 nm. Analyzing the spectra of WO 3 /ITO 300 nm, ... ratio of surface to volume is negligible. And some calculations, basing on formula Scherrer also shows that the size of grains in all WO 3 films is about 30 – 35 nm. Moreover t...

Ngày tải lên: 13/02/2014, 03:20

... determining critical force. Some numerical results for a linear hardening material have been given and discussed. 1. Stability problem of cylindrical shell Let us consider a thin round cylindrical ... has been solved by approach simulation of instability form of the cylinder (see [1],[5]). In this paper, the solution of problem in the real bending form of structure has been...

Ngày tải lên: 13/02/2014, 04:20

... Decay Discriminator) setting. The optimum setting is the setting where there is equal and minimum spill of alpha pulses into the beta MCA and beta pulses into the alpha MCA. In the Parkard ... of beta (Bq/kg), and (I γ ) is gamma dose rate (µR/h). Water in the pore of pottery or in the soil absorbs some parts of the radiation that would otherwise reach the thermo...

Ngày tải lên: 13/02/2014, 04:20

... as a chain of olivine, pyroxene basalt stretching along the axis of the basin. The sample taken from drill hole shows that the mineral composition of basalt mainly includes olivine and pyroxene, ... system, extending from the border between China and Vietnam from the north, to the Gulf of Thailand in the south. In the Northwest region of Vietnam, this fault is abo...

Ngày tải lên: 13/02/2014, 12:20