Salinity and drought are significant abiotic stresses affecting plant growth productivity. To convert arid saline coral sandy soil in the Vietnamese archipelago into arable land, this study isolated evaluated salinity tolerance exopolysaccharide (EPS) production of Bacillus velezensis TSD5 strain from Vietnam. EPSTSD5 was estimated to have a molecular weight 1.09 × 105Da based on its intrinsic viscosity, with monosaccharide components consisting glucose, rhamnose, mannose (of which is...

Introduction: Multimodal treatment of non-small cell lung cancer at Dong Nai General Hospital needs to be evaluated. CEA and Cyfra21-1 are the most commonly used markers in clinical diagnosis cancer. Determining sensitivity specificity practice as well redetermining optimal cut-off threshold test will help doctors department diagnosing disease. Methods: Cross-sectional analysis. Cox regression was compare risk mortality perioperative period. ROC curve plotted calculate AUC found using Youden...

Introduction: Coronary artery bypass grafting is a major surgery that uses different grafts to atherosclerotic lesions causing stenosis or occlusion of coronary arteries. There are two types techniques: with cardiac arrest and without arrest. MSCT 256 good means assessing graft patency. Methods: Case series report, retrospective patients undergoing at Dong Nai general hospital. Patients who meet the selection criteria will have an scan contrast evaluate level Results: 40 were included in...

We have developed the green method for synthesis of benzoxazoles and benzothiazoles with moderate to good yields using imidazolium chlorozincate (II) ionic liquid supported into Fe3O4 nanoparticles ([email protected]) under solvent-free sonication. The reaction was performed mild conditions only produced water as a sole byproduct. reactions sonication showed advantages faster rate (30 min) high products (up 90%). Moreover, [email protected] material easily separated from mixture can be...

Microwave irradiation has been used to enhance the reaction yields and selectivities for organic transformation. In this paper, microwave (MW) was investigated environmentally benign synthesis of benzoxazoles through cyclization 2-aminophenols benzaldehydes using deep eutectic solvent (DES) as a catalyst. The [CholineCl][oxalic acid] easily synthesized from choline chloride with oxalic acid without further purification. catalyzed produce desired product in good excellent conversion...

5-[(2-Methyl-1 H -benzimidazol-1-yl)methyl]-1,3,4-oxadiazole-2-thiol or 5-[(2-methyl-1 -benzimidazol-1-yl)methyl]-4-(4-methylphenyl)-1,2,4-triazol-3-thiol which were prepared starting from 2-methylbenzimidazole in the reaction with appropriate N -aryl-2-chloroacetamides afforded two series of -aryl-2-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mrow><mml:mo stretchy="false">{</mml:mo></mml:mrow></mml:math>5-[(2-methyl-1...

N -(4-Substituted phenyl)acetamides, which were prepared from acetic anhydride and p- substituted anilines, utilized as precursors for reactions to Vilsmeier-Haack reagent form 6-substituted-2-chloroquinoline-3-carbaldehydes 3a–c . Meanwhile, a similar was applied 1-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mrow><mml:mo stretchy="false">[</mml:mo></mml:mrow></mml:math>1-(4-substituted phenyl)ethylidene<mml:math id="M2"><mml:mrow><mml:mo...

In an effort to develop new antimicrobial agents, 3-(4-methylcoumarin-7-yloxyacetylamino)-2-thioxo-1,3-thiazolidin-4-one (4) was synthesized by reaction of thiocarbonylbisthioglycolic acid with ethyl (4-methyl-2-oxo-2H-chromen-7-yloxy)aceto- hydrazide (3), which prepared in turn from 7-hydroxy-4-methylcoumarin (1). The condensation compound 4 different aromatic aldehydes afforded a series 5-(arylidene)-3-(4-methylcoumarin-7-yloxyacetyl-amino)-2-thioxo-1,3-thiozolidin-4-one analogs 5a–h....

For the last two decades, dengue fever has continuously been a disease burden in Viet Nam, particularly Mekong River Delta (MRD) region, which is one of regions most vulnerable to climate change. This study focuses on mapping vulnerability over MRD region Nam by appl

Abstract This research aims to create innovative compounds that incorporate 1,2,4‐triazole and exhibit α‐glucosidase inhibitory potential. Similar our previously reported series of N ‐aryl 2‐{[5‐(naphthalen‐1‐ylmethyl)‐4‐phenyl‐4 H ‐1,2,4‐triazol‐3‐yl]thio}acetamide compounds, we explore here 4‐ethyl instead 4‐phenyl as substituent. The synthesis process effectively yielded these with the highest yield reaching up 91 % for compound ‐phenyl‐2‐{[5‐(naphthalen‐1‐ylmethyl)‐4‐ethyl‐4 5 a . Their...

2-Methylquinazolin-4(3H)-one was prepared by the reaction of anthranilic acid, acetic anhydride, and ammonium acetate. The 2-methylquinazolin-4(3H)-one with N-aryl-2-chloroacetamides in acetone presence potassium carbonate gave nine N-aryl-2-(2-methyl-4-oxoquinazolin-3(4H)-yl)acetamide compounds. structures these compounds were elucidated on basis their IR, 1H nuclear magnetic resonance (NMR), 13C NMR, high-resolution mass spectrometry (HR-MS) spectral data. These synthesized containing...

The title compound, C

Metaverse has recently attracted paramount attention due to its potential for future Internet. However, fully realize such potential, applications have overcome various challenges as massive resource demands, interoperability among applications, and security privacy concerns. In this paper, we propose MetaChain, a novel blockchain-based framework address emerging the development of applications. particular, by utilizing smart contract mechanism, MetaChain can effectively manage automate...

Organic rice production has been developed in Mekong Delta to reduce toxicity risk for humans and the environment, however, some models have failed due pesticide residues that were not investigated advance. So, it is important test prohibited residual pesticides organic farming. The samples ten districts of six provinces Delta, Vietnam, sampled analyzed check presence 854 substrates are use production. A total 18 active ingredients detected. Based on contamination rates, they divided into...

The syntheses of nine new 5-iodosalicylic acid-based 1,3,4-oxadiazoline derivatives starting from methyl salicylate are described. These compounds 2-[4-acetyl-5-methyl-5-(3-nitrophenyl)-4,5-dihydro-1,3,4-oxadiazol-2-yl]-4-iodophenyl acetate ( 6a ), 2-[4-acetyl-5-methyl-5-(4-nitrophenyl)-4,5-dihydro-1,3,4-oxadiazol-2-yl]-4-iodophenyl 6b 2-(4-acetyl-5-methyl-5-phenyl-4,5-dihydro-1,3,4-oxadiazol-2-yl)-4-iodophenyl acetate, C 19 H 17 IN 2 O 4 6c...

Ethyl 2-((4-oxo-3-phenyl-3,4-dihydroquinazolin-2-yl)thio)acetate ( 3 ) which was synthesized starting from anthranilic acid 1 via 2-thioxo-3-phenylquinazolin-4(3 H )-one 2 reacted with hydrazine hydrate to afford 2-((4-oxo-3-phenyl-3,4-dihydroquinazolin-2-yl)thio)acetohydrazide 4 ). Reaction of thiocarbonyl- bis -thioglycolic gave a new compound name N -(4-oxo-2-thioxothiazolidin-3-yl)-2-((4-oxo-3-phenyl-3,4-dihydroquinazolin-2-yl)thio)acetamide 5 Knoevenagel condensation appropriate...

We report here the preparation of 2-hydroxy-5-iodo-N'-(1-arylethylidene)benzohydrazide compounds in good to excellent yields (83-98%) within a short reaction time (10-15 min), through clean and efficient procedure. Seventeen new were synthesized fully characterized by FT-IR, NMR, HRMS. The deep eutectic solvent can be recovered easily phase extraction reused up several times without any significant loss catalytic activity. Additionally, method has wide substrate scope provides an accessible...

The title compound, C 18 H 16 N 2 O 3 S, was synthesized by reaction of 2-mercapto-3-phenylquinazolin-4(3 )-one with ethyl chloroacetate. quinazoline ring forms a dihedral angle 86.83 (5)° the phenyl ring. terminal methyl group is disordered rotation about 60° in 0.531 (13): 0.469 (13) ratio. In crystal, C—H...O hydrogen-bonding interactions result formation columns running [010] direction. Two parallel further interact hydrogen bonds. most important contributions to surface contacts are...

The development of Solar energy system is growing rapidly in Vietnam recent years by encouragement the Government renewable energy. Requirement for accurate knowledge solar radiation reaching surface increasingly important successful deployment photovoltaic plants. However, measurements different components resources including direct normal irradiance (DNI) and global horizontal (GHI) are limited to few stations over whole country. Satellite imagery provides an ability monitor large areas at...

Introduction&#x0D; Rib fractures are a common complication of chest trauma. Fractured rib fixation is an effective method in treating complicated fractures, especially cases with flail chest. This study aimed to evaluate the results and effectiveness surgery at Dong Nai General Hospital.&#x0D; Methods&#x0D; analytical descriptive cross-sectional study, conducted general hospital from 2022 2023.&#x0D; Results&#x0D; The included 34 patients, 79% were male, 75% ruptures caused by traffic...

The title compound, C