Volume-17 ~ Issue-2 ~ February 2024

Abstract: Background: The ultrasonic velocity (u), density (), and viscosity () of binary liquid mixtures of -Campholenic Aldehyde (-CPA), a terpene based key ingredient widely used in perfume industries, with 1-propanol have been measured at different temperatures for various solute-solvent concentrations. The experimental values of these fundamental acoustic parameters were obtained for each liquid combination and the results were then interpreted to confirm the said interactions. These values were further used to calculate some other allied parameters and enumerated in terms of molar concentration and temperatures. The acoustical characteristics used imply a significant relationship of these with both concentration as well as temperature taken for binary mixtures.

Keyword: Ultrasonic velocity, Viscosity, Density, 1-propanol, molecular interactions.

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Abstract: Formaldehyde (HCHO), is the most commonly found aldehyde in our environment owing to its toxicity, it has been classified as one of the major water pollutants. Formaldehyde enters the environment from natural sources which includes forests fires and direct human sources such as fuel combustion, on-site industrial uses, and released from building materials and cosmetic products .Although formaldehyde is necessary for many products and processes essential to the world's economy, but this dependence comes at a cost to public health. In the present communication a sensitive method is proposed for the detection and determination of formaldehyde. Formaldehyde reacts with phloroglucinol and 1-naphthylamine in alkaline medium forming a red color dye with an absorption maximum at 520 nm. The proposed sensor is linear range 20ppm to 320 ppm. The minimum detection limit found was 0.008 ppm for formaldehyde.

Keyword: Formaldehyde, colorimetric method, microfluidic.

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Abstract: Background: A blood test is critical to assess overall health and identify possible disorders such as anemia, infections, leukemia, diabetes, etc. However, currently available techniques involve invasive blood collection, which is very uncomfortable for patients. Near infrared (NIR) spectroscopy is a highly flexible form of analysis that can be applied to a wide range of analytical applications. Chemometrics is an area that refers to the application of statistical and mathematical methods, including those based on mathematical logic, to more complex data treatments. The Nanotimize Company developed a new portable instrument, Progenos®, based in NIR spectroscopy and using chemometric algorithms to performed blood analysis without blood, ie an analysis by touch. The instrument collects the data in vivo using the subjects' left palm. In order to investigate Progenos®, we present in this paper the initial clinical studies.

Key Word: NIR; chemometrics, blood, non-invasive analysis, Progenos®.

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Abstract: The synthesized PVPMOA Poly (Vinyl pyrrolidone– o-methoxy aniline) was characterized by FT-IR , Scanning electron microscope (SEM) and Energy-dispersive X-ray spectroscopy (EDX) technique. Gravimetric testing, Impedance studies and potentiodynamic polarization measurements were carried out to evaluate inhibition performance of polymer composite. Impedance results demonstrated that good anticorrosion behavior of composite. Polarization study showed that composite act as mixed type inhibitor. Gravimetric testing data confirmed the adsorption of PVPMOA obeyed Langmuir isotherm model. Metal surface interaction with polymer composite and its surface assimilation further examined by applying SEM and EDX techniques.

Key Word: SEM, EDX, Corrosion Inhibition, composite, Isotherm, Impedance

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[5]. R.Karthikaiselvi And Subhashini Sethumanickam, The Water Soluble Composite Poly (Vinylpyrrolidone–Methylaniline): A New Class Of Corrosion Inhibitors Of Mild Steel In Hydrochloric Acid Media. Arabian Journal Of Chemistry. 10 (2017) S621-S635.

Abstract: In the present study, a series of 1,2,3-triazole were synthesized by employing the regioselective copper(I)-catalyzed azide-alkyne via 1,3-dipolar cycloaddition reaction. The synthesized moieties were screened for α-amylase and glucose uptake assay. The moieties displayed moderate to good inhibitory activity in the range of IC50 value of 0.290-2.879 μM and 0.288-1.528 μM against α-amylase and glucose uptake assay respectively. Out of all the synthesized compounds, compound 6a with IC50 value of 0.290μM and 0.288μM with methoxy substitution at aryl ring were found to be most active. Further, the moieties were screened for in vitro antibacterial activity........

Key Word: Antibacterial, antidiabetic, antioxidant, click-chemistry, molecular docking, 1,2,3-triazole.

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Abstract: The results of a study of unique Surakhany oil, Azerbaijan, using modern instrumental analysis methods, such as GC/MS, ICP/MS, STA, UV spectroscopy, are presented. Hydrocarbon, biomarker (terpanes, steranes, hopanes and adamantanes) and microelement compositions were determined. It has been shown that the type of oil is methane-naphthenic, and steranes predominate among the biomarkers. A study of the microelement composition showed that the highest content of titanium and iron in Surakhany oil; as for noble metals, Au, Pt, Pd, Ru and Ag......

Keywords: Surakhany oil, hydrocarbons, ME compositions, biomarkers, geochemical parameters

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Abstract: A series of novel heterocyclic hybrids based on pharmacophores such as Thiazole, Piperazin-4-(P-Chlorophenyl)-Sulfonamide, and Thiazolidin-4-one substituted at the 5th position by different aromatic aldehydes were synthesized (compound 8 a-j) and their structure was established with the aid of spectroscopic techniques such as FTIR, 13C NMR, 1H NMR, Mass, etc. In-vitro antibacterial, antifungal, and antioxidant activities of the synthesized compounds 8 a-j have been evaluated using ampicillin, Nystatin, and Ascorbic acid as the reference standards respectively. Except for compound 8C, all compounds have revealed comparable and better antibacterial......

Keywords: Thiazole, Thiazolidin-4-one, Piperazine, Antimicrobial, Antioxidant

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Abstract: Synthesis and biological evaluation of (E)-5-(substituted benzylidene)-2-((4-(morpholine-4-carbonyl) thaiazol-2-yl) amino) thiazol-4(5H)-one and their derivatives (6a-j) were synthesized and their structure was established with the facility of spectroscopic techniques such as FTIR, 13C NMR, 1H NMR, Mass, etc. In-vitro antibacterial, antifungal, and antioxidant activities of the synthesized compounds 6a-j have been evaluated by using ampicillin, Nystatin, and Ascorbic acid as the reference standards. Compounds 6d, 6f, 6h and 6i have revealed comparable antibacterial activity by displaying similar MIC values as the reference standard used. Although 6i bearing strongly electron withdrawing substituent's showed prominent antioxidant activities compared with remaining derivatives compared to the reference standard. The compound 6i exerts multi-target inhibitory action against different microbial.

Keywords: Thiazole, Thiazolidinone; Antioxidant; Antimicrobial

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Abstract: This brief elucidation introduces numerical and computational tools designed for the estimation of parameters and the dissection of models within intricate dynamic systems. Kinetic modeling, focused on the examination of chemical reaction rates, offers insights into understanding the factors influencing reaction dynamics under varying conditions. The research endeavors to unravel the complexities of data through analytical techniques, providing a comprehensive measurement and comprehension of these changes. An exploration of the historical evolution of kinetic velocity laws, along with the introduction of novel tools, concepts, and topics of interest to chemists, materials scientists, and veterinarians, is undertaken........

Keywords: catalytic complex reactions; pyrolysis; thermograms; kinetic parametric estimation.

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