Trường Đại học Khoa học Tự nhiên, Đại học Quốc gia Thành phố Hồ Chí Minh
Công bố khoa học tiêu biểu
Sắp xếp:
PETROLEUM POTENTIAL OF SOURCE BEDS IN THE CUU LONG BASIN
Tạp chí Phát triển Khoa học và Công nghệ Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 14 Số 4 - Trang 31-45 - 2020
In the Cuu Long basin, three source beds are identified: lower Miocene, Upper Oligocene, upper Eocene + lower Oligocene. They are separated from each other by sand-clay layers. Only Upper Oligocene and Upper Eocene + Lower Oligocene source beds are two main source beds supplying a great part of organic matter into traps. Petroleum source potential of Upper Oligocene source bed (66.30 billion tons)......
Phylogenetic relationship of indigenous freshwater fishes in the Sai Gon - Dong Nai river and adjacent drainage basins
Tạp chí Khoa học Tự nhiên Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 6 Số 1 - Trang 1915-1932 - 2021
Investing in the biodiversity conservation along river catchments is a cost-effective nature-based solution to ensure the availability and sustainable management of water and the richness of biodiversity for all, with many co-benefits for the other sustainable development goals. The need for further exploration and conservation assessments of inland freshwater fish fauna coincides with expanding t......
#Cá bản địa #sự đặc hữu #phân bố địa lý #Sài Gòn – Đồng Nai #vùng sinh thái nước ngọt Châu thổ Mê Kông
Synthesis of silver nano-particles using micro-emulsion technique
Tạp chí Phát triển Khoa học và Công nghệ Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 16 Số 4 - Trang 75-84 - 2013
Silver nanoparticles were synthesized by mixing two micro-emulsion systems – one with precursor (AgNO3) and one with reducing agent (NaBH4). Dioctyl sodium sulfonsuccinate – AOT was used as surfactant. We studied parameters as ω – molar ratio of water to surfactant, hydrocarbon (oil) types. The molar ratio of water to surfactant was changed from 2.5 to 5; 7.5 and 10. The used oil types were c......
Nymphoides aurantiaca (Dalzell) Kuntze, a new record of family Menyanthaceae for the flora of Vietnam
Tạp chí Khoa học Tự nhiên Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 1 Số T2 - Trang 58-63 - 2017
The newly recorded species, Nymphoides aurantiaca (Dalzell) Kuntze belonging to family Menyanthaceae, was discovered at some wetland areas in Lò Gò–Xa Mát National Park (Tân Biên, Tây Ninh). This species was found for the first time in 2003 during a research on wetland biodiversity and conservation funded by Tây Ninh Province’s Department of Science and Technology. Special morphological characteri......
INITIAL EFFECTS ON HEALING BURNED WOUND BY THE MIXTURE OF WATER-SOLUBLE CHITOSAN - BACTERIAL CELLULOSE - SILVER NANOPARTICLES
Tạp chí Phát triển Khoa học và Công nghệ Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 12 Số 9 - Trang 61-67 - 2020
The paste of mixturing water-soluble chitosan (WSC) – Bacterial cellulose (BC) - Polyvinyl pyrolidone (PVP) and anti-bacterial silver nanoparticles shows good results on burn wound of experimental mice. Paste of samples containing silver nanoparticles at concentration of 10, 20, and 30 ppm can also resist two harmful strains Pseudomonas aeruginosa, Staphylococcus aureus, which regularly appear on ......
STUDYING ELECTROCHROMIC AND ELECTROCHEMISTRY CHARACTERISTICS OF WO3 THIN FILM
Tạp chí Phát triển Khoa học và Công nghệ Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 11 Số 6 - Trang 67-72 - 2021
In this paper, we use WO3/ITO/glass multilayer thin films. The ITO and WO3 layers were deposited on glass in turn by magnetron sputtering method.The electrochemical characteristics of film were investigated by cycle voltametry method on potentiostat equipment. The coloration and bleaching processes, which were performed in the electrolyte solution, of film will be discussed in this paper.
Isolation of cellulose nanocrystals from rice husk using the formic/ peroxyformic acid process
Tạp chí Khoa học Tự nhiên Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 4 Số 2 - Trang 430-440 - 2020
Cellulose nanocrystals (CNCs) is one of the interesting materials attracting many researchers from the decades, especially when they are extracted from natural biomass resources. The aim of this study was to explore the utilization of rice husk residues as source for the production of CNCs. ......
#Vỏ trấu #quá trình axit formic/ axit peroxyformic #nano tinh thể cellulose #phế phẩm nông nghiệp
Study on analyzing overlaped peaks using the Gold algorithm of unfolding
Tạp chí Phát triển Khoa học và Công nghệ Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 19 Số 2 - Trang 71-79 - 2016
In this work, we initially applied the Gold unfolding algorithm to deconvolute continuum region in the gamma spectra and to analyze its overlaped peaks for the gamma spectrometry using HPGe detector. The results could be used to analyse overlaped peaks of low level gamma spectrum for environmental samples.
DETERMINING THE CRYSTALLIZATION BEHAVIOR OF TiO2-SiO2 MIXED COMPOSITION FILMS
Tạp chí Phát triển Khoa học và Công nghệ Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 9 Số 1 - Trang 17-24 - 2021
Studying the structure of TiO2-SiO2 composition thin films is very important because the crystallization behavior and their surface roughness Rms depend very much on their composition as well as annealing. Annealing composition thin film in a high temperature such as 600°C causes changing in their structures from amorphous to anatase and rutile structures. Because of an inhomogeneous in the TiO2-S......
Construction a process to measurement the indoor radon concentration
Tạp chí Phát triển Khoa học và Công nghệ Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 16 Số 3 - Trang 53-60 - 2013
Radon is a naturally radioactive gas , but it causes lung cancer to humans. The risk of lung cancer due to radiation depends on the amount of radon inhalation and radon exposure time. In Vietnam, radon concentrations are usually determined by RAD7, however RAD7 just showed the immediate values of radon, and have to regularly calibrate it. The construction process to determine the accumulates indoo......
Tổng số: 952
- 1
- 2
- 3
- 4
- 5
- 6
- 10