This study was conducted to evaluate the catalytic activity of bimetallic FeZn-ZIFs for removing dye residues in aqueous solution. In which, the crystal structure, characteristic functional group, thermal stability, elemental composition and morphology of FeZn-ZIFs were determined through advanced analytical methods such as powder X-ray diffraction, Fourier transform infrared spectroscopy, thermogravimetric, energy-dispersive X-ray spectroscopy, and scanning electron microscopy. Besides, the ability to handle acid fuchsin dye based on the catalytic activity of FeZn-ZIFs towards the oxidant potassium peroxydisulfate (PDS) was also evaluated by UV-Vis method. The results showed that the FeZn-ZIFs/PDS catalytic system was capable of removing up to 93.3% of acid fuchsin at room temperature after only 30 min.

This study presents a solution to integrate a system of multiple positioning sensors into a mobile robot to control the robot to the desired position in the external environment. The heart of the system is an esp8266 microcontroller that can calculate equations in real time control. The microcontroller receives signals from the compass sensor to determine the rotation angle of the head of the robot to the desired location; updates the global positioning system (GPS) sensor value used for navigation and continuously updating data during movement in the outdoor environment. The experiment was conducted in an open yard at College of Engineering, Can Tho University under relatively favorable weather conditions. The results show that the robot can move to the desired positions. This research is a premise for the following groups to apply more advanced algorithms and technology to mobile robots.

In Vietnam, as in most other nations in the world, breast cancer is a frequent type of cancer that affects women. Treatment decisions and patient survival are significantly influenced by early detection and precise diagnosis. When it comes to breast cancer screening and early diagnosis, mammography is a crucial tool. Based on 2051 images as the data source was collected in Can Tho Oncology Hospital, the deep learning network AlexNet in this study was used to categorize cancer risk based on mammography images into groups called Birads2, Birads3, Birads4, and Birads5. This model can accurately classify cancer risk with 86.84% using deep learning approaches. This result contributes to supporting diagnostic work for specialized doctors and creates conditions for artificial intelligence application image detection in medicine.

The research aims to develop a method for determining the content of Ivermectin, an anti-parasitic drug, in samples of seafood and aquatic products. This method will serve the quality control and inspection needs of the food supply chain. In this study, Ivermectin in whiteleg shrimp (Litopenaeus vannamei), catfish (Pangasianodon hypophthalmus) and fishcake (Pangasius) products were extracted using QueChERS method (Quick-Easy-Cheap-Effective-Rugged-Safe) and analyzed by Liquid Chromatography with tandem mass spectrometry (LC-MS-MS). Some important parameters such as linear range, the limit of detection (LOD), the limit of quantitation (LOQ), sensitivity, selectivity, repeatability, reproducibility, and accuracy were investigated based on the criteria standards of domestic and international organizations. The results method has met the requirements for analyzing and controlling residues of Ivermectin in fishery and fishery product samples well.

The paper presents the development of an optimized fuzzy controller using a genetic algorithm for fast battery charging and maintaining low battery temperature. The fuzzy controller is designed based on experience with two inputs, which are battery temperature and rate of battery temperature change during charging, and the output is battery charging current. The fuzzy controller parameters are optimized using a genetic algorithm to minimize a performance index related to battery charging time and battery temperature rise during charging. The simulation results show that the proposed fuzzy controller not only controls the battery charging as fast as a constant current charger but also has a lower temperature rise during charging, thereby increasing the battery lifespan.

Can Tho University have a lot of expensive specialist equipment. These tools are meant to be used for business, research, and teaching. The construction of a system that automatically tracks the running time of these specialized devices is required to maximize usage efficiency. The proposed system is made up of three parts. First, the study presents the solution to develop IoT-based uptime monitoring devices for electronic devices. Next, the system enables the management of data collected from electronic devices in order to process operations, query data, monitor operational time, and support system management based on the SensorThings standard. Finally, this study also presents data visualization functionality. Depending on how long the device is in operation, the application permits parameter monitoring. Other monitoring devices and extension of many communication protocols can be easily included in the system because it is constructed in accordance with open standards.

Polystyrene (PS) is a commonly used thermoplastic with convenient properties and low price. Nevertheless, the amount of waste from this type of plastic has been alarmingly increasing and creating negative impacts on the environment and humans. This study aimed to isolate and select bacterial strains that have the capability of degrading PS plastics. Fifteen isolated bacterial strains were found to survive in a Basal salt medium supplemented with 0,1% PS plastic powder. Research results showed that the two strains CT26 and CT10, only developed substantial biomass at the location where polystyrene plastic sheets were placed on an agar medium. At the same time, these two bacterial strains were found to possess the PS degrading ability through the weight loss of plastic powder by 42.12% and 34.08%, respectively, after 28 days of culture in the liquid environment. The results of 16S rRNA gene sequencing showed that the two strains CT26 and CT10 were identified as Cronobacter sakazakii and Pseudomonas aeruginosa, respectively, with similarities reaching 99.85% and 100%, respectively.

The article aims to identify factors affecting agricultural production, which is the basis for proposing solutions to improve the efficiency of agricultural land use in Cai Lay district, Tien Giang province. Nine managers and 60 farmers have conducted consultations to find out the factors affecting agricultural production. This is the basis for determining the level of influence of factors on agricultural production through the multi-criteria evaluation (MCE) method. The results have identified three main factors groups and 12 sub-factors that directly impact the agricultural production process of Cai Lay district. In which, factors such as consumer markets, product prices, agricultural support policies, production costs and unusual weather changes were factors that had a high level of influence on agricultural production. Thereby, solutions were proposed about linking production, product consumption, post-harvest processing and preservation, and agricultural support policies should be given priority to overcome factors affecting agricultural production.

This study was carried out to explore the dynamics of SOC accumulation and identify the major factors regulating SOC accumulation at three soil depths (0-10, 10-30, and 30-60 cm) of Acacia hybrid plantations according to different stand ages (3, 5, and 7 years old) in Xuan Loc protection forest, Dong Nai province. The study revealed that: (1) SOC content increased significantly with forest age. Furthermore, SOC concentration is primarily concentrated in the topsoil layer and decreases considerably with depth. (2) SOC stocks (TC) increased from 57.86 tons/ha (3 year old stand) to 100.57 tons/ha (7 year old stand)  during the forest development. TC demonstrated noticeable surface aggregation, with more than 60% present at a depth of 0–30 cm. (3) Data from Variation Partitioning Analysis revealed that total nitrogen content, litter biomass, and soil pH were the main factors that obviously exhibited alterations in SOC content. The results of this study provide information for Acacia hybrid plantation management activities as well as for conducting modelling of C accumulation in forest soil in the area.

Two new oxygen-chelated ruthenium-indenylidene complexes, 1 and 2, with activity for ring-opening metathesis polymerization (ROMP), have been synthesized from simple ruthenium complexes, such as [Ru(PPh3)3Cl2], [Ru(p-cymene)Cl2]2 or [Ru(p-cymene)(PCy3)Cl2 and propargyl alcohol in one step. Complexes 1 and 2 were evaluated by the ROMP of endo-dicyclopentadiene to form polydicyclopentadiene.

The paper considers the parametric vector equilibrium problem in the Hausdorff topological vector spaces. By utilizing properties of a scalarizing function constructed based on the Hiriart-Urruty oriented distance function along with appropriate conditions and techniques, sufficient conditions for the lower semicontinuity of the solution maps of the problems under consideration are established. This achieved result is novel and is applicable to vector optimization problems.

The paper establishes necessary and sufficient conditions for nonlinear error bounds of real-extended-valued functions in metric and Asplund spaces. The conditions are presented in terms of partial slopes and Fréchet subdifferentials by employing techniques of modern variational analysis. The results are applied to study the nonlinear metric regularity of set-valued mappings.

In this study, star-shape polycaprolactone triol (stPCL) was successfully synthesized via ring-opening polymerization of ε-caprolactone (CL), using glycerol as the initiaton and and Sn(Ot)2 as the catalyst. The molecular weight of stPCL, determined by gel permeation chromatography (GPC), was found to be around 1.600Da. The structure of stPCL was characterized using hydrogen nuclear magnetic resonance (1H-NMR) and fourier transform infrared spectroscopy (FTIR). This stPCL product was used as the main raw material for synthesizing thermosetting polyurethane (PU) aimed at biomedical applications.

This study aims to synthesize thermoplastic polyester by preparing the mono chloride maleic rosin (RMA-Cl) by the reaction between Rosin-Maleic Anhydride Adduct (RMA) and SOCl2. Then  RMA-Cl will be reacted with 1,6- Hexanediol (HDO) (at 2:3 molar ratio) to create bio-based thermoplastic polyester with an acid number lower than 30. The structure of the synthesized product was evaluated using some analysis methods such as Fourier-Transform Infrared (FTIR) and Hidro-Nuclear Magnetic Resonance (1H-NMR). These results demonstrated that the bio-based polymer was successfully synthesised. The properties of the bio-based resin hold significant potential for future applications as a substitute for petroleum-based plastics.

The research aims to isolate and select lactic acid bacteria (LAB) strains capable of synthesizing γ-aminobutyric acid (GABA) and lactic acid production for application in the yogurt fermentation supplemented with purple corn. The results have isolated 15 LAB strains from fermented milk samples and selected 4 LAB strains capable of producing GABA and lactic acid with high levels, including strains V3, V4, Y2, and Y4. These 4 strains were tested in purple corn-supplemented yogurt fermentation with an initial density of 104, 106, and 108 CFU/mL. The results showed that strain V3, with a density of 108 CFU/mL was the most suitable for fermentation and was identified as Lactiplantibacillus pentosus. The appropriate ingredient ratio for the fermentation was determined with a purple corn and milk ratio of 2:8 (v/v), supplemented sugar at 4% (w/v) and fermentation at 43ºC for 8 h, resulting in a light pink product with a structured, aromatic, and delicious taste.

This study aimed to isolate endophytic bacteria (EB) from Clinacanthus nutans with the ability to synthesize compounds possessing antioxidant and anti-inflammatory properties. The antioxidant activity of extracellular extracts (EE) from EB was evaluated based on total phenolic content, total polyphenol content, DPPH free radical scavenging, total antioxidant capacity, and reducing power. Anti-inflammatory activity was assessed through inhibition of bovine serum albumin denaturation. The study isolated 24 EB strains that could synthesize extracellular polyphenol compounds with antioxidant and anti-inflammatory properties. Total polyphenol content (TPC) ranged from 94.32 to 2284.44 mg GAE/mL EE, and total flavonoid content (TFC) ranged from 5.35 to 99.69 mg QE/mL EE. Antioxidant activity measured by DPPH, reducing power (RP), and total antioxidant capacity (TAC) ranged from 0.13 to 1067.36 mg vitamin C equivalent/mL EE. Anti-inflammatory content ranged from 0.32 to 0.46 mg diclofenac equivalent/mL EE. The three EB strains with consistently high activity across all parameters were identified as Bacillus sp. CN-R1, Enterobacter sp. CN-R15, and Enterobacter sp. CN-L7.

The research was conducted to make a variety of prawn crackers and meet the needs of consumers. The study consisted of five experiments: the effect of the ratio of a mixture of flour (tapioca flour and flour): mung bean flour, the impact of algae (Caulerpa lentillifera), the effect of salt, the effect of the drying step on product quality, effect of preservation ability of the product. The results showed that the ratio of the flour mixture (flour and tapioca flour): mung bean flour with 7:1 (w/w), the ratio of algae with 18 %, the ratio of salt with 0,8% and drying at 55  for 12 hours. Furthermore, the results of storage on day 21 that the acceptable levels of microorganisms. These products had high quality based on high sensory values, color, moisture content, swelling capacity and high crunchy.

The Mekong Delta is an essential region for rice production in Vietnam, with An Giang province playing a significant role in contributing to both rice output and economic development. However, current intensive cropping strategies in the Mekong Delta have not yielded high efficiency in rice cultivation. This study aims to evaluate the status of Autumn-Winter rice cultivation in An Giang province. Data were collected from 68 rice farming households across 9 districts using a convenient random sampling method. Information was gathered through prepared, structured questionnaires administered via Google Forms, email, Facebook, and Zalo platforms. Descriptive statistical methods were employed to assess the state of rice production, and analysis of variance (ANOVA) was used to compare production input and output. The results indicate that farmers sowed seeds at high densities and applied fertilizers and pesticides at levels exceeding scientific recommendations. Additionally, the farming areas were generally small, and the rice varieties used lacked diversity, with a prevalence of low-quality varieties that negatively impacted profitability. Overall, economic efficiency remains low, and the capital returns are not favorable for the rice farmers in the region.

The study aimed to determine the relationship between Protozoa and water environment  parameters in intensive white-leg shrimp ponds. Protozoa samples were collected at five shrimp ponds and two canals in Soc Trang province. Shrimp ponds were divided into 2 groups, including group N1 (3 ponds) and group N2 (2 ponds). All shrimp ponds had similar farming procedures. However, only group N2 used settling ponds during the farming process. The results were recorded for 20 Protozoa species (36%). The species number of Protozoa showed no significant difference between the shrimp ponds and canals. Protozoa abundance in shrimp ponds was higher than that in canals, varying from 34,089-31,155,511 ind./m3 to 60,507-3,037,222 ind./m3. Genus Tintinnopsis predominates in group N2, while some species belonging to the ciliate had a high percentage in group N1 for 28-42 days. pH and salinity were significantly negatively correlated (p

Infectious diseases caused by bacteria in striped catfish are increasingly common, causing huge losses to farmers. The study aimed to identify the bacterial pathogen that led to muscular necrosis disease in striped catfish (Pangasianodon hypophthalmus) at fish farms in An Giang, Can Tho, and Dong Thap provinces of the Mekong Delta. Three bacterial strains representing each province were isolated from diseased striped catfish that exhibited clinical signs such as muscular necrosis, tail erosion, and enlarged internal organs. Screening tests revealed that isolates CT5, NV9, and VH120, were found to be highly pathogenic, with LD50 values of 1,66×104 CFU/mL, 3,98×104 CFU/mL, and 1,58×103 CFU/mL, respectively. The challenged fish with these strains exhibited symptoms similar to those observed in naturally infected fish. The bacterial isolates were identified as Gram-negative, oxidase-positive, catalase-positive, and O/F test-positive, utilizing glucose, galactose, or D-mannitol as carbon sources. 16S rRNA sequencing and phylogenetic analysis revealed that the isolates exhibited 99.87% similarity and clustered with Vibrio mimicus. This study is the first to identify Vibrio mimicus as the causative agent of muscular necrosis disease in intensively farmed pangasius in the Mekong Delta.

This research aims to find suitable alkalinity for the growth and survival rate of black tiger shrimp (Penaeus monodon) postlarvae by applying biofloc technology. The experiment was carried out including four alkalinity treatments: 80, 120, 160 and 200 mgCaCO3/L. Shrimp with a weight of 0.01 g/shrimp were placed in composite tanks with a volume of 250 L, salinity of 15‰, shrimp density of 2,000 shrimp/m3, and molasses were used to create biofloc with the ratio of C:N = 10:1. After 28 days of the rearing period, the environmental factors were in the suitable ranges for shrimp growth. The biofloc volume ranged from 2.89 to 3.12 mL/L, the highest volume was in the treatment of 160 mgCaCO3/L (3.12±0,09 mL/L), and the difference was not statistically significant (p>0,05) among the treatments. At the end of the experiment, shrimp in the treatment of 120 mgCaCO3/L had growth (4.03±0.01 cm/shrimp, 0.44±0.017 g/shrimp), survival rate (90.2±2.12%), and productivity (1,803±43 shrimp/m3) were the highest, significantly different from the other treatments (p

The study was conducted to explore parasitic pathogens on extensively farmed mud crabs in Ca Mau province. Results showed that there were 7 genera of parasites infected in the gills, blood, hepatopancreas, and body cavities of crabs: Acineta, Epistylis, Hematodinium, Octolasmic, Peniculida, Nematoda, and Portunion. Parasite genera had a Shannon diversity index of 0.8. The portunion genus infected the body cavities of mud crabs, causing muscle necrosis and changing the crab's secondary sexual characteristics. The results showed that, out of 83 crab samples, 82 were infected with parasites. The prevalence of Portunion was highest in crab's gills (86.7%). The majority of Portunion larvae and eggs in the hepatopancreas reached 100% in the Dam Doi district. The adult Portunion infection rate is 27.7%. However, the intensity of adult Portunion infection in farmed crab in the Nam Can district (5.7 larvae/crab) is higher than in other locations. The infection intensity of eggs and larvae of Portunion is also high, 33.8 and 24.1 eggs/lame, respectively. Hematodinium genus has the highest infection intensity (86.5 infections/lame).

Reading comprehension of non-verbal media is considered a mandatory requirement when reading various types of informational texts that combine multiple illustration methods such as images, diagrams, tables, etc., as set forth by the 2018 Literature Curriculum. Based on the attainment targets of the 2018 Literature Curriculum and the characteristics of the reading comprehension questions on non-verbal media in the current Literature textbooks for grades 10 and 11, this article focuses on proposing various types of reading comprehension questions to help students achieve the reading skill requirements for informational texts, meeting the objectives of the curriculum. When designing reading comprehension questions on non-verbal media, certain principles must be ensured. Teachers need to pay attention to the connection between the attainment targets for reading comprehension of non-verbal media and the attainment targets for understanding the content of the text to meet the requirements set by the 2018 Literature Curriculum.

Design thinking is gaining traction in a variety of fields, including technology, business, and education. Numerous big businesses and academic organizations have used this approach to encourage innovation and problem-solving. Several universities that offer design majors are incorporating design thinking into their university training programs. Still, not much is known about how successful education is. Interviews with design thinking-trained interior design students at Yersin Dalat University reveal that despite their instruction, students still struggle with recalling and putting design thinking into practice. The stages of design thinking, a deficiency in soft skills, and distance learning also have a direct impact on the efficacy of instruction. Classes on soft skills must be set up, as well as more direct instruction and engaging, hands-on activities like workshops and the application of design thinking to real-world issues. It's also vital to include the process in activities.

Criminal Investigative Science, Forensic Medicine and autopsy examination module applies teaching methods and practical case studies to module training, which is necessary for learners, bringing real-life situations into analysis and evaluation. The assessment will help learners gain a deeper understanding of the foundational knowledge and be able to apply the knowledge they have learned into practice. In addition, the teaching method of applying real-life situations not only inspires learners but also makes the lesson lively and attractive. From there, creating a combination of theory and practice in teaching will help learners easily access and apply theory to specific situations in a better way. Contribute to improving the quality of course teaching and meeting course output standards.