Exploratory research on urban growth in space and time using a modeling approach plays an important role. This study aims to analyze urban expansion through land use change modeling utilizing an integrated approach of remote sensing images, GIS, and the CA-Markov model in Tan An city. Landsat images in 2013, 2018, and 2023 are used to create the actual land use map. The forecast model is evaluated by comparing the simulation map with the actual land use map in 2023. Land use forecast results for 2033 illustrate that built-up land has been spreading by occupying areas for annual and perennial crops, which will be the primary land use change trend in the future. Urban is forecast to expand mainly from residential areas in the central region along existing transportation routes. The findings also showed that the CA-Markov model can better understand spatial and temporal dynamics when anticipating land use change scenarios.

Efficient use of renewable energy contributes to promoting the implementation of the Net Zero roadmap. The solar-biomass hybrid renewable energy system overcomes the disadvantages of renewable energy. In particular, internal combustion engines running on a mixture of syngas, biogas and hydrogen need to be researched and developed. Processing solid waste into RDF (Refuse-Derived Fuel) and then gasifying them into syngas allows storing biomass for planned use, contributing to stabilizing the capacity of renewable energy systems. Simulation and experimental studies show that the air coefficient is between 0.3 and 0.4 to ensure the highest gasification efficiency. The air/fuel ratio of syngas is low, so engines using air mixtures need a flexible supply control system. Low syngas heating value reduces engine power by up to 40% compared to running on traditional fuel. Direct injection of Syngas helps improve the power of Syngas engines in particular and engines using lean gas fuel in general.

The textile wastewater is guilty of water pollution on a global scale. As a result, the study, investigation, and development of green and cheap materials for pollution removal are important and urgent. In this study, DT-NB biochar material from disposable bamboo chopsticks was prepared and applied to adsorb methylene blue dye (MB) in an aqueous solution. It was found that the synthesized DT-NB through the slow pyrolysis at 500oC followed by the ball milling process had a large surface area of 273.11 m2/g and complex pore structures to facilitate the adsorption of MB onto the adsorbent. At pH 10 and an initial MB concentration of 30 mg/L, DT-NB mass for MB removal is 0.3 g in 60 minutes of contact time. Experimental data were well fitted to the Langmuir monolayer adsorption model with the maximum adsorption capacity of 4.12 mg/g, and the kinetics of MB adsorption was described with the pseudo-second order model.

This article aims to determine land's economic and physical suitability as a basis for agricultural land use orientation in the Vinh Thuan district. Nine (9) PRAs were conducted for managers and farmers, who are people directly engaged in agricultural cultivation, to determine the physical and economic conditions and the local agricultural production situation. Furthermore, the evaluation land methods (FAO, 1976 and 2007) were used to determine the physical and economic suitability of land for the main land use types of the district, with the support of the GIS tool for developing thematic maps. The results have identified seven physical adaptation zones and twelve economically adapted zones for five land use types, including double rice, double rice-cash crops, rice-shrimp, brackish aquaculture, and pineapple. Based on physical and economic suitability, combined with local development orientation, and on the basis of consultation with the farmers, six agricultural production areas have been built for the Vinh Thuan district by 2030 to be sustainable and adapt to climate change.

The Thị Vải River basin is renowned as the industrial, port, and logistics hub of the Southeast region. The strong economic development combined with the area's sensitive natural conditions has posed numerous challenges to water quality, affecting sustainable development. This study assesses the environmental carrying capacity and develops an environmental carrying capacity map for the Thị Vải River, applying to the indicators NH4+, NO3-, PO43-, and DO. Correlation analysis and Analytic Hierarchy Process (AHP) methods were used to determine the relationship between water quality and economic activities, along with the simulation of substance dispersion processes to create environmental carrying capacity maps. These maps illustrate the spatial distribution of environmental carrying capacity for each pollution indicator. This research provides a procedure for creating environmental carrying capacity maps for river basins, aiming to determine the water environment's load-bearing capacity when economic and social activities are implemented in the basin.

This study was aimed to assess the current status and changes in mangrove forests in Soc Trang province between 2016 and 2022. The assessment used Sentinel-2 satellite imagery and employed object-based classification method to generate current status maps of mangrove forests. To validate the accuracy of the image classification, field surveys were conducted at 134 points in coastal districts, including Tran De, Cu Lao Dung, and Vinh Chau. The evaluation results demonstrated a high accuracy of 91% rate of the object-based classification method, with a Kappa coefficient of 0.82, indicating its effectiveness for generating mangrove forest status maps. By comparing the mangrove status maps from 2016 to 2022, the study revealed an approximate increase in mangrove forest area of 907.21 hectares. The research findings serve as a reference source for the current status of mangrove forests and highlight the need for further in-depth studies on forest biomass, species diversity, and environmental impacts to enhance the effective management, protection, and sustainable development of mangrove forests.

Eggshell waste, a valuable raw material, can be used as an alternative excipient ingredient in pharmaceutical tablets. For this, the present study modified the eggshell powder surface and mixed with acetaminophen using the direct compression method. The structural characteristics were clarified through Fourier-transform infrared spectroscopy (FT-IR). The dissolution profiles of various tablet formulations were investigated in simulated physiological environments (phosphate buffer pH 5.8) and from gastric fluid pH 1.2 to intestinal fluid pH 6.8. The results showed that the acetaminophen coated with untreated eggshell powder was rapidly released. In contrast, tablets containing 15% eggshell powder treated with deionized water were sustainably released, similar to commercial products. In conclusion, the eggshell powder can be reused as a replacement excipient to control the release of various active tablet ingredients.

Andrographis paniculata popularly known as the King of bitters, is an annual herbaceous plant in the Acanthaceae family, and widely cultivated in Southern and Southeastern Asia. Andrographis paniculata has been believed to be a treatment for bacterial infections, common cold, diarrhea and a health tonic for the liver. The study was conducted to determine the appropriate harvest age for Andrographis paniculata. At the same time, the antioxidant and antibacterial properties of Andrographis paniculata extract were also investigated. The results showed that the flowering stage had the highest total of quercetine and caffeine contents (119.18 and 16.71 mg.g-1 DW, respectively) while the highest total content of andrographolide was found in the fruiting stage (0.99 mg.g-1 DW). The antioxidant capacity was investigated based on the ability to neutralize DPPH free radicals (EC50= 627,925 µg/mL) and reduce iron (EC50= 163,898 µg/mL). At the same time, the ethanolic extract also showed the inhibition to microbial trains Bacillus cereus ATCC10876, Staphylococcus aureus ATCC25923, Listeria innocua ATCC33090, Pseudomonas aeruginosa ATCC27853, Escherichia coli ATCC25922 with minimum inhibitory concentration (MIC) in the range from 16 to 32 mg/mL.

Strobilanthes schomburgkii (SS) is well-known as a new herb in traditional Vietnamese medicine. In the present study, poly (D,L-lactic-co-glycolic)acid (PLGA) microparticles loaded with Strobilanthes schomburgkii (SS/PLGA-NPs) were synthesized using emulsion-solvent evaporation method and evaluated their biological activities. The average size of SS/PLGA-NPs was less than 1 µm, and characteristic structure was determined using Fourier transform infrared spectroscopy (FT-IR). The entrapment efficiency (EE) of SS/PLGA-NPs based on total polyphenol (TP) was found to be from 20% to 40%. The TP release process indicated an initial burst release in the early stage and sustained release during the investigated period. Besides, the antioxidant and anti-inflammatory activities of SS/PLGA-NPs demonstrated that the nanocarrier system still retains the original activity of SS extract. Therefore, PLGA microparticles exert their potential to protect and control the release of active ingredients with different purposes.

Response surface methodology (RSM) according to the Box-Behnken design was applied to find the optimal conditions for the extraction process of Strobilanthes schomburgkii extract with anti-inflammatory activity. The factors were evaluated based on their activity with nitric oxide (NO•) radical-scavenging, a signal associated with pro-inflammatory factors. The results showed that the ultrasound-assisted extraction process of Hoan Ngoc red extract was optimized with ethyl acetate after three times extraction, with the solvent-to-material ratio at 21.25 mL/g for 15.99 minutes at 52.69℃. Regarding the above extraction conditions, the obtained extract has an experimental IC50 value of 226.18mg/mL, consistent with the IC50 value predicted from the RSM model of 227.93 mg/mL.

This study aimed to preliminarily determine the chemical composition of extracts from the leaves of Terminalia catappa L., collected in Vung Tau city, Ba Ria-Vung Tau Province. The study also investigated the ability of these extracts to inhibit germination and exhibit antimicrobial activity against pathogenic bacteria causing liver and kidney disease in fish, specifically Edwardsiella ictaluri bacteria. The results revealed that the leaf extract had a total flavonoid content of 237.76 mg QE/g extract and a total phenolic content of 145.29 mg GA/g extract. At a 15 mg/mL concentration, the leaf extract completely inhibited the germination of radish seeds. Additionally, the leaf extract exhibited antimicrobial activity against Edwardsiella ictaluri bacteria within a 32-512 mg/mL concentration range. These findings suggest that Terminalia catappa L. leaves could serve as a potential natural source for further research on substances with weed-inhibitory activity and disease prevention in fish.

The study was conducted at the same broiler farm in Tien Giang province to evaluate the antibody titer (Ab) of three chicken breeds including tre, noi, and Minh Du, after vaccination against Gumboro (IBD) and Newcastle (ND) diseases. A total of 300 serum samples were collected to test the Ab against IBD and ND by ELISA at 1, 28, 35, 49, and 63 days of age. Minh Du breed had higher maternally derived antibody IBD than noi and tre chickens (p

The study was conducted to select bacterial strains capable of creating bioflocculants from vermicelli production wastewater in Binh Thuy district (Can Tho City). The study has selected 28/32 bacterial strains capable of producing polysaccharide bioflocculant and 27/32 bacterial strains capable of creating protein bioflocculant through the ability to create mucus on agar culture. Two bacterial strains T11 and T17 were determined to have the best bioflocculant rate with kaolin at pH value 5.0 and the carbon source added to the medium was glucose using spectrophotometric method at 550 nm wavelength to measure the turbidity of the mixture of bacterial suspension with kaolin, the percentage flocculating activity (% FA) of two strains T11 and T17 was 68.02% and 79.87%, respectively. These two bacterial strains were identified as Bacillus velezensis and Klebsiella pneumoniae with 100% similarity by 16S rRNA gene sequencing. These two strains of bacteria will be promising bacteria strains with great potential in the field of supporting wastewater treatment before this polluted water source is discharged into the environment.

The study aimed to isolate and select nitrogen metabolizing and poly-phosphate accumulating bacteria from vermicelli production wastewater at Binh Thuy district (Can Tho City). The research isolated thirty-two strains bacteria from wastewater, bacterial cells whose colonies were round, yellow, ivory white or milky white, tissue or crust buoyancy, intact or lobed cover, size ranges from 0.5-3.5 mm, bacterial cells are spherical or short rods, positive or negative-Gram. In addition, those strains of bacteria are capable of producing the catalase enzyme. The study has selected four bacterial strains such as T10, T11, T13 and T17 that have been able to metabolized amonia, nitrate (100 mM, 200 mM và 300 mM concentration) and nitrite (10 mM, 20 mM và 30 mM concentration). Besides, the research can determine one bacterial strain that is T11, that has been able to accumulate poly-phosphate with the accumulated poly-phosphate content of 1.79 mg/L. The results of 16S rRNA gene sequencing and sequencing method showed that the T11 strain was Bacillus velezensis with 100% similarity. Bacterial strain T11 is a promising bacterium with potential for both nitrogen metabolism and poly-phosphate accumulation, creating a premise for the application of microbial sources in wastewater treatment in the future.

This study was conducted to isolate and select lactic bacteria strains that can produce extracellular enzymes (protease and amylase) and ferment with high levels of lactic acid. Based on the morphological, physiological, and biochemical determination, the results were to isolate 28 strains of lactic bacteria from 5 fermented fish samples, and these bacterial strains were all Gram-positive, catalase-negative, oxidase-negative, and had no mobility. When evaluating the ability of isolated strains to produce extracellular enzymes, the results showed that there were 22 bacterial strains with proteolytic ability, accounting for 78.57%, and 6 bacterial strains without proteolytic ability, accounting for 21.43%. Among the 28 strains, only 21 bacterial strains were capable of degrading starch, and 7 bacterial strains were not. In addition, the lactic acid content of 28 strains was the highest after 3 days of fermentation and ranged from 8.4 to 15 g/L. These findings indicate that these lactic bacteria strains have the potential to be used in the fermentation process of fermented fish, helping to improve product quality.

The effect of a gelatin solution at various concentrations for coating on the quality changes of giant freshwater prawns (size 12-15 pieces/kg) during 18 days in the cold condition (4ºC) and 6 months in the freezing condition (-20ºC) was investigated. The result showed that the gelatin concentration of 3% was the suitable concentration to form a gelatin coating to retard the lipid oxidation of giant freshwater prawns. The sensory quality of prawns coated by gelatin was maintained better, and the total viable count was also lower in refrigerated and frozen storage when compared to samples without the gelatin coating. From the results, the sensory-related quality of giant freshwater prawns covered in gelatin solution might maintained for up to 15 days in cold storage circumstances for freshwater prawns, compared to only 9 days for uncoated samples.

Silicon helps plants overcome biotic and abiotic stress. Ca2+ is a component of the cell wall, making plants more rigorous, whereas Mg2+ plays an important role in photosynthesis. In this study, MgSiO3 và CaSiO3 of 200 mg/L with a volume of 50 mL per pot was added to 10 replicates for each treatment. The free-chemical treatment was watered with 50 mL of tap water and the control was irrigated normally. After 10 days without continuous watering, agronomic analysis showed that plants treated with MgSiO3 had better development in plant height, chlorophyll index values, and root elongation compared to those of other water cutoff treatments. MgSiO3 supplementation improved photosynthetic pigments such as chlorophyll a, b, and total carotenoids but gave the lowest total soluble sugar content in leaves. The highest malondialdehyde level in free-chemical treatment prevailed the positive effects of silicon compounds in mitigating lipid peroxidation of cell membranes under drought conditions. PCR application with primer RM257 followed by electrophoresis resulted in the bands at 150bp, giving evidence of presentation qLR9.1 and qRWC9.1 in ST25 rice cultivar, relating to control leaf rolling and relative water content.

The study was conducted to determine the growth and harvesting times of Solanum procumbens varieties to give the highest biomass yield and glycoalkaloid yield in Ho Chi Minh City. Experiment 1 was carried out on 11 Solanum procumbens cultivars collected from Ba Ria Vung Tau, Gia Lai, Hanoi, Long An, Lam Dong, Phu Yen and Quang Ngai provinces to detect the cultivar that had the highest biomass and glycoalkaloid yield. This experiment showed that QN9, QN6, HN, and BRVT are cultivars with high fresh, dry herb and glycoalkaloid yield. Experiment 2 was conducted on three cultivars and four harvesting times to select the harvesting time which enhance yield and quality. The results showed BRVT and QN9 cultivars also have the highest fresh, dry herb and glycoalkaloid yield at the harvesting time ≥ 90% of the plants had at least three fruit clusters with one or more ripe fruits with fresh herb yield 15.74 tons/ha, 15.39 tons/ha; dry herb yield 4,01 tons/ha, 5,24 tons/ha; glycoalkaloid content 0.72%, 0.66% and glycoalkaloid yield 35.14 kg/ha, 34.38 kg/ha respectively.

The research was conducted to apply the ultrasonic method in the diagnosis of urologic diseases in dogs in Ho Chi Minh city. A total of 3,700 dogs were examined for the first time at the Animal Health laboratory and treatment Division of Ho Chi Minh city. According to the clinical symptoms and ultrasonic diagnosis, 472 cases (12.67%) showed urinary pathology. Urologic diseases occurred in dogs of all ages, increasing with the age of dogs, and depending on breed and sex (P

This research aims to study the awareness, accessibility and use of e-commerce, as well as find out the barriers to e-commerce application in the agricultural production of smallholder farmers. The research was conducted through semi-structured interviews with 60 smallholder farmers, and 03 key informants and collecting related secondary information. The research findings indicated that the majority of smallholder farmers knew e-commerce and accessed and used various e-commerce channels. Facebook and Zalo are two channels that smallholder farmers use for entertainment, connection, and online buying and selling. Smallholder farmers use Facebook to buy input factors and sell products from cultivation. However, fear of risk, lack of knowledge and skills, and habit of buying and selling goods directly are the main barriers to e-commerce application of smallholder farmers.

This study was aimed at determining the effects of acidic sulfate water having different pH values in combination with salinities on growth performance, survival rate, feed conversion rate (FCR) and digestive enzyme activities of striped catfish (Pangasinodon hypophthalmus) at fingerling stage. The experiment was randomly designed with three pH levels (5.5, 6.5 and 7.5) combined with three salinity levels (3‰, 6‰ and 9‰). After 60 days of cultivation, the effects of salinity and pH on striped catfish were found at different levels. Specifically, pH 5.5 and salinities of 6 and 9‰ considerably affected the fish growth performance and FCR. Fish in the pH 6.5 and 3‰ groups had the highest body weight and length, DWG and SGR, with the lowest FCR (p

Pangasius macronema is an economically valuable species cultured in cages in the Mekong Delta, Vietnam, using wild collected fingerlings. This study aimed to determine the types and doses of hormones that are effective in induced fish reproduction. The study was conducted with HCG and ovaprim hormone on fish ovulation. The experiment with HCG consisted of 4 treatments (T) with different injection doses and 3 replicates, including T1.1 (5,000 UI/kg), T1.2 (5,500 UI/kg), T1.3 (6,000 UI/kg) and T1.4 (6,500 UI/kg) for female fish. The experiment with ovaprim included 3 treatments with doses such as  T2.1 (0.4 mL/kg), T2.2 (0.5 mL/kg) and T2.3 (0.6 mL/kg) for female fish. Results showed that the HCG at a dose of 6,000 IU/kg (T1.3) obtained good reproductive efficiency with an ovulation rate of 77.33%, an actual relative fecundity of 48,009 eggs/kg fish, fertilization rate of 70.31%, and hatching rate of 66.58%. Ovaprim at the doses of 0.4 to 0.6 mL/kg fish did not give effective in stimulating ovulation.

This study was aimed to verify whether or not hybrids between Pangasius krempfi (Pk) and Pangasius mekongensis (Pm) are being raised in some farms. Fish samples of two species and four fingerlings from several households were analyzed for the mitochondrial gene Cytochrome C oxidase subunit I (COI) and the nuclear gene Rhodopsin (Rho). Results based on COI showed that there were three suspect fish samples (L1, L2 and L3) whose mother was Pm and one sample (L4) whose mother was Pk with 100% similarity to the maternal species. The Rho gene had seven variable sites (among 766 bp) between Pk and Pm. The four hybrid samples had two nucleotides of the two species overlapping in the above seven sites, proving that they were hybrids of the two species. The combination results from the two genes showed that L1, L2 and L3 were hybrids ♀ Pm x ♂ Pk, L4 was a hybrid ♀ Pk x ♂ Pm. Thus, artificial hybridization between the two fish species is occurring and this issue needs to be further studied to evaluate the impacts of hybrids on aquaculture and aquatic resources.

Digital transformation in education is becoming an urgent social demand. However, this process needs to be carried out carefully to avoid risks related to unethical technology, leading to negative aspects of the transformation. Online teaching methods are increasing the demand for digital mechanisms in universities. Therefore, universities need guidance, support, and certain standards to avoid the above unintended impacts. Based on the analysis of relevant documents, this paper proposes a set of criteria for implementing e-learning methods in universities that currently emphasize face-to-face learning. The author also proposes the application and management of infrastructure and related processes to ensure the ethical use of data in the analysis of learning and research data.

Can Tho University (CTU) is the country's leading center for training, scientific research and technology transfer, making an effective contribution to the cause of high-quality human resource training, talent fostering and development. Scientific development serves the socio-economic development of the Mekong Delta and the country. Paying attention to and developing party members among students is very necessary and important, in order to supplement young human resources that are both socialist-minded and vocationally proficient for the provinces and cities of the Region in particular and the country in general. Based on the content of students' awareness and striving to become party members, the paper clarifies the current situation and proposes a number of key solutions to raise awareness and promote the process of striving to become The Communist Party of Vietnam’s member of students at Can Tho University.