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Decolorization of textile dyes by TiO2 -based photocatalyst using polyol as electron donor
Tạp chí Khoa học Tự nhiên Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 2 Số 5 - Trang 83-89 - 2019
Xuan Thi Hong Cao, Van Thi Bich Pham, Thuy Thi Thanh Nguyen, Hao Minh Hoang
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...... hiện toàn bộ
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
Hung Manh Pham, Hoang Duc Huy, Ngan Trong Tran
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...... hiện toàn bộ
#Cá bản địa #sự đặc hữu #phân bố địa lý #Sài Gòn – Đồng Nai #vùng sinh thái nước ngọt Châu thổ Mê Kông
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
Triet Tran, Nga Phi Nguyen, Thuy Thi Thu Nguyen
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...... hiện toàn bộ
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
Nhan Chi Ha Thuc, Nhi Van Nguyen, Van Thi Thanh Tran, An Nang Vu, Hieu Van Le
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. ...... hiện toàn bộ
#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
Tạp chí Khoa học Tự nhiên Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 1 Số T5 - Trang 78-84 - 2018
Tri Nguyen, Loc Cam Luu, Anh Nguyen Quynh Phan, Anh Cam Ha
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...... hiện toàn bộ
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
Nguyen Huynh Nghia, Nguyen Thanh Tung, Phạm Lê Bạch Ngọc
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...... hiện toàn bộ
#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
Bao Tran Huynh, Hieu Van Le, An Nang Vu, Ngoc Han Nguyen, Ngoc Hoa Thi Le
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...... hiện toàn bộ
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
Tieng Van Nhut Pham, Thanh Nguyen Chu, Le Van Bui, Minh Thi Thanh Hoang
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...... hiện toàn bộ
#peanut #PGPR #Pseudomonas #salt stress tolerance
Effects of drought stress on germination and seedling growth of peanut ( Arachis hypogaea L.)
Tạp chí Khoa học Tự nhiên Đại học Quốc gia Thành phố Hồ Chí Minh - - 2021
Thắng Thanh Trần
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, ...... hiện toàn bộ
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
Tho Huu Le, Mai Thi Thanh Nguyen, Hai Xuan Nguyen
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 ...... hiện toàn bộ
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