Tạp chí Khoa học Tự nhiên Đại học Quốc gia Thành phố Hồ Chí Minh
Công bố khoa học tiêu biểu
* Dữ liệu chỉ mang tính chất tham khảo
Sắp xếp:
Decolorization of textile dyes by TiO2 -based photocatalyst using polyol as electron donor
Decolorization of textile dyes including 2,6-dichlorophenolindophenol (DCIP), congo red (CR) and methyl orange (MO) by using TiO2-based photocatalyst in the presence of polyols such as glycerol and ethylene glycol was investigated. Polyols were used as sacrificial electron donors (SEDs). The results showed that the polyols improved the rate and yield of a light-induced decolorization of dyes in co......
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
Investigation of hexamethylenediamine elimination in the synthesis of polyhexamethylene guanidine
Polyhexamethylene guanidine hydorocloride (PHMG-HCl), a positively charged polymer, is the outstanding antibacterial with wide spectrum of antibacterial and antifungal, capable killing bacteria at very low concentration, and extremely low toxic (level three in the tract and level four through the skin). However, the residual of medium toxic reactant hexamethylenediamine in the synthesized PHMG-HCl......
The second-order composed radial derivatives of perturbation mappings of parametric set-valued optimization problems
Tạp chí Khoa học Tự nhiên Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 4 Số 3 - Trang 567-572 - 2020
In the paper, we study the generalized differentiability in set-valued optimization, namely stydying the second-order composed radial derivative of a given set-valued mapping. Inspired by the adjacent cone and the higher-order radial con in Anh NLH et al. (2011), we introduce the second-order composed radial derivative. Then, its basic properties are investigated and relationships between th......
#The second-order composed radial derivative #Perturbation mappings #Sensitivity analysis #Parametric set-valued optimization
Magnetic recoverable CuFe2O4/cellulose nanocrystal composite as an efficient catalyst for 4-nitrophenol reduction
Tạp chí Khoa học Tự nhiên Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 5 Số 4 - Trang 1593-1604 - 2021
CuFe2O4/cellulose nanocrystal (CuFe2O4/CNC) composite featured high magnetic activity was prepared by a facile and one-pot solvothermal method. Based on the solvothermal condition, nanometer-sized magnetic CuFe2O4 ferrite particles (CuFe2O4 NPs) were directly synthesized and CNC was coated on the surfaces of CuFe2O4 NPs. The composition, structure, morphology, and magnetic property of prepared CuF......
Isolation and screening of Pseudomonas isolates enhance salinity tolerance of peanut (Arachis hypogaea L.)
Tạp chí Khoa học Tự nhiên Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 4 Số 1 - Trang 347-356 - 2020
The application of plant growth-promoting rhizobacteria (PGPR) is one of the most promising alternative approaches to improve plant growth under salt stress. Among PGPR, Pseudomonas is a bacterial genus that possesses a variety of mechanisms for plant-growth-promoting and induction of biotic as well as abiotic stress tolerance. In this study, we screened three potential strains and tested the grow......
#peanut #PGPR #Pseudomonas #salt stress tolerance
Effects of drought stress on germination and seedling growth of peanut ( Arachis hypogaea L.)
Peanut is am essential legume and has many uses, such as producing oil, food, and fodder. However, with the negative effects of climate change, drought is one especially of the important issues that reduce the yield of peanut. Thus, in this study, the impact of drought stress on the peanut growth was investigated by using PEG-6000 to block pathways of water movement. The changes in morphological, ......
Study on structure–activity relationships (SARs) of epoxylignan compounds with α- glucosidase inhibitory activity
Tạp chí Khoa học Tự nhiên Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 1 Số T5 - Trang 110-115 - 2018
Epoxylignans are polyphenolic compounds, which possess various biological activities such as antiproliferative activity on cancer cells, antioxidant, antihyperglycemic,… In this research, we study on α- glucosidase inhibitory activity of 11 epoxylignans isolated from the stem of Artocarpus heterophyllus, the stem of Willughbeia cochinchinensis, the stem bark of Crateva religiosa, and the propolis ......
Cost and benefit analysis of maintaining Delonix regia trees on Nguyễn Văn Linh street in Ho Chi Minh City
Tạp chí Khoa học Tự nhiên Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 1 Số T4 - Trang 215-221 - 2017
Street trees play the important roles for the natural environment, and bring a lot of benefits to people in urban areas, especially at Ho Chi Minh City - an area with the fastest urbanisation and industrializationin Vietnam. However, the area of the street trees is now decreasing considerably due to the urban planning, removal and replacement. A study on cost and benefit analysis of maintaining st......
Risks of the saltwater intrusion in the SaiGon, DongNai rivers in the context of climate change and sea level rise
Tạp chí Khoa học Tự nhiên Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 2 Số 3 - Trang 102-112 - 2019
This work aimed to assess the risk of the saltwater intrusion (SI) in main rivers in Ho Chi Minh City (HCMC) in the context of climate change by 2100 under scenarios of RCP4.5 and RCP8.5. By modeling and GIS methods, results showed that SI has been increasing and moving upstream. Differences in the salinity between the RCP4.5 and RCP8.5 scenarios could be only visible from the middle to the end of......
Tổng số: 594
- 1
- 2
- 3
- 4
- 5
- 6
- 10