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1223 articles for “Acidity”
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Study of the Hammett equation for oxidation of 2 – Hydroxy – 1 - Naphthalidene Anil and para substituted chloroanils by potassium bromate in acid medium
Abstract: The kinetics of oxidation of the Schiff base and its substituted anils by potassium bromate in aquo-acetic acid medium has been studied in this work. The study of thermodynamic parameters is done, and the rate constants for the reaction are determined. The plot of log{ks/k0} against the substituent constant (ï³ ) is plotted for para and meta substitution and the reaction constant (ï²) is calculated. The plot of ï„H against …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 7, Issue 2, 2016 · pp. 1–4 Read article
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Ternary Amino Acid Metal Complexes: Structure and Role in Yeast Metabolism
Abstract: Two ternary complexes designated as Ter1 and Ter2 were synthesized using minimal optimal methods wherein two separate amino acid ligands L-phenylalanine and L-lysine were mixed with chromium sulphate hexahydrate designated as Cr3+ and two routes were designed for the synthesis of both the complexes. For the synthesis of Ter1 L-phenylalnine was reacted with Cr3+ which was in turn reacted with L-lysine and for the synthesis Ter2 the reverse procedure was …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 4, Issue 3, 2014 · pp. 17–22 Read article
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Forecasting Heavy Metal Level on the Basis of Acidification Trend in the Major Estuarine System of Indian Sundarbans
Abstract: The authors present here the temporal oscillations of aquatic pH, zinc (Zn), copper (Cu) and lead (Pb) in the ambient media of Hooghly estuary of Indian Sundarbans and forecast values of these variables in response to acidification phenomenon. The forecast has been done on the basis of 30 years of real-time data (1984–2013). The exponentialsmoothening-based forecast reflects the gradual lowering of pH in the estuarine water that has considerable impact …
Published in Journal of Energy, Environment & Carbon Credits · Vol. 4, Issue 2, 2014 · pp. 1–9 Read article
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Grafting of Methyl Methacrylate onto Starch Initiated by Ceric Ion as an Initiator in Presence of Nitric Acid as Activator
Abstract: Natural polymers with improved structure have been securing increasing value in the industry as theyare abundant, cheap, and biodegradable. Graft copolymerization is one of the effective ways toenhance the properties of natural polymers. Starch based graft copolymers are becoming increasinglyimportant due to their remarkable adhesion, high water absorbency, and biodegradability. Methylmethacrylate (MMA) grafted onto starch by using the ceric ammonium nitrate (CAN) as a redoxinitiator in the presence of nitric …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 12, Issue 1, 2021 · pp. 27–33 Read article
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Predictive Modeling and Optimization of Citric Acid Bioproduction Using Ipomoea batatas Peel (Sweet Potato)
Abstract: In this research, the Box–Behnken design was adopted and applied to the process and the total of 30 experimental runs were generated for the liquefaction steps considered for the purpose of citric acid bioproduction using Ipomoea batatas peel (sweet potato) which was very helpful during the investigatory process of this research. The liquefaction step adopted were very sensitive as gross investigations to ascertain their usability was made and proven worthy …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 13, Issue 1, 2022 · pp. 32–43 Read article
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Phenological Changes in the Chemical Content of Wild and Greenhouse-grown Hypericum pruinatum: Hypericins, Hyperforins and Phenolic Acids
Abstract: AbstractWe previously reported phenological changes in the content of several flavonoids in Hypericum pruinatum. In the present successive study, we investigated variation in the content of eight new compounds in different plant parts of the same species through its phenological cycle. Plant materials including greenhouse-grown and wild growing individuals were harvested at different stages of plant phenology and subjected to high performance liquid chromatography analyses after dissected into different plant …
Published in Research & Reviews : Journal of Botany · Vol. 5, Issue 3, 2016 · pp. 37–47 Read article
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A Review On Evaluation Of Abiotic Stress Signals On Production Of Gymnemic Acid In In Vitro Cultures Of Gymnema Sylvestre R.Br
Abstract: The demand and market value of medicinal plants increases day by day. The raw materials for herbal medicine industry came from wild collections. Due to intense demand, natural populations are under stress and many species of medicinal plants became vulnerable. To overcome the issue new methods to conserve and propagate medicinal plants on large scale. In vitro propagation techniques are effective for the multiplication and conservation. Advantages like availability of …
Published in Research & Reviews : Journal of Botany · Vol. 12, Issue 2, 2023 · pp. 28–35 Read article
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Antiurolithiatic Bioactives from Rotula aquatica Lour
Abstract: Urolithiasis is a complex process of kidney stone formation involves various stages of nucleation and mineralization. Plants are used for treatment of urolithiasis from early times. Thus the study was evolved around the plant Rotula aquatica Lour. used as “Paashanabhedha”. The present study reveals the bioactivity guided isolation of anti-urolithiatic compounds from successive solvent extracts of the roots of Rotula aquatica Lour. The isolated compounds showed significant in-vitro antiurolithiatic activity …
Published in Research & Reviews : Journal of Herbal Science · Vol. 8, Issue 1, 2019 · pp. 1–10 Read article
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Development of A Rapid Microtiterplate Based Colorimetric Method for Estimation of Non-esterified Fatty Acids in Bovine Plasma
Abstract: Non-esterified fatty acid (NEFA) is one of the most important blood metabolites contributing significantly during body growth, cyclicity, pregnancy and lactation, and it plays more vital role particularly during transition phase of the biological processes like pregnancy to lactation transition period. Determination of blood concentrations of NEFA is, therefore, important. The measurement technique or assay for measurement of blood NEFA should be simple, reliable, accurate, rapid and cheap. Here, the …
Published in Research and Reviews : Journal of Veterinary Science and Technology · Vol. 4, Issue 3, 2015 · pp. 29–34 Read article
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Role of Vanadium Salicylic acid coordination Complex in Diabetic cataract induced InVitro in Goat lens
Abstract: Diabetes is one of the major health problems that affect a large number of human populations. Diabetic cataract is one of the most frequent ocular complications rising secondarily to diabetes Vanadium and its various coordination metal complex plays a significant role in reduction of diabetes as well as cataract. We had tried to find out that the synthesized complex of Vanadium –Salicylic acid had a role on diabetic cataract induced …
Published in Research & Reviews: A Journal of Drug Formulation, Development and Production · Vol. 5, Issue 1, 2018 · pp. 25–28 Read article
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Crosslinked Starch Polymer for Coating on Fruit/Vegetable for Preservation Derived from Waste De-Oiled Soybean Cake
Abstract: Cross-linked starch films have been prepared by reacting starch extracted from de-oiled soybean cake (waste material from oil industry) with bio-based acids citric acid and tartaric acid. The obtained films were characterized by spectroscopic, thermal and surface morphological techniques. Thermal analysis showed that thin film has good thermal stability. The micrographs obtained from scanning electron microscopy showed the film surface has smooth and uniform morphology. Biological properties like cytocompatibility, antimicrobial …
Published in Journal of Catalyst & Catalysis · Vol. 10, Issue 4, 2023 · pp. 17–29 Read article
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Synthesis, Characterization and Antibacterial Evaluation of Novel Canola Oil-Based Poly-(Citrate/Succinate)-amide Incorporated with Zn (II) and Ni (II) Metal Ions
Abstract: This present research study is to fabricate efficient metal-incorporated Canola oil (CO) polymers synthesised using dicarboxylic acids – Citric acid (CA) and Succinic acid (SA). The research mainly highlights the fabrication of polymeric materials using CO via a safer chemical synthesis route with less toxic reactants and minimal solvent/diluent to accomplish sustainability, adopting the green chemistry principle. Divalent Zinc (Zn) and Nickel (Ni) were incorporated in the poly-(Citrate/Succinate)-amide matrix, Ni …
Published in Journal of Polymer & Composites · Vol. 12, Issue 6, 2024 · pp. 45–69 Read article
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Synthesis of Magnetically Recoverable Nickel (II) Complex-Functionalized Fe3O4@ISNA (ISNA= Isonicotinic acid) Nanomaterials: Catalytic Studies on Nitrophenol Reduction and TD- DFT Studies
Abstract: In this study, we aimed to develop a novel, environmentally sustainable, and magnetically separable heterogeneous nanocatalyst, denoted as Fe3O4@ISNA@NiL (where L represents the ligand). The synthesis involved a two-step process, first, isonicotinic acid was chemically grafted onto the surface of iron oxide nanoparticles (Fe3O4) to introduce functional groups capable of further chemical modification. Subsequently, a nickel(II) Schiff base monomeric complex was anchored onto the modified surface, resulting in a nanocatalyst …
Published in Journal of Polymer & Composites · Vol. 13, Issue 1, 2025 · pp. 88–96 Read article
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Synthesis of Magnetically Recoverable Nickel (II) Complex-Functionalized Fe 3 O 4 @ISNA (ISNA= Isonicotinic acid) Nanomaterials: Catalytic Studies on Nitrophenol Reduction and TD- DFT Studies
Abstract: In this study, we aimed to develop a novel, environmentally sustainable, and magnetically separable heterogeneous nanocatalyst, denoted as Fe 3 O 4 @ISNA@NiL (where L represents the ligand). The synthesis involved a two-step process, first, isonicotinic acid was chemically grafted onto the surface of iron oxide nanoparticles (Fe 3 O 4 ) to introduce functional groups capable of further chemical modification. Subsequently, a nickel(II) Schiff base monomeric complex was anchored …
Published in Journal of Polymer & Composites · Vol. 12, Issue 9, 2024 Read article
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Comparison of High and Low Temperature Properties of Dual Modified Asphalt Binders with Polyphosphoric Acid and Polymer Modified Bitumen using Rheological Tests
Abstract: The main objective of this study was to investigate the properties of asphalt binder mixtures at both high and low temperatures. To achieve this, two types of admixtures were selected and combined, resulting in a technology known as dual modified asphalt binders. Extreme temperatures during summer and winter can lead to significant issues such as cracking and rutting in asphalt binder pavement. In order to address these problems, a comprehensive …
Published in Journal of Polymer & Composites · Vol. 13, Issue 2, 2025 · pp. 23–34 Read article
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Comparative Experimental Investigation of Infill Pattern and Infill Density on Fused Deposition Modeling (FDM) Process Characteristics of Polylactic Acid (PLA)
Abstract: Additive manufacturing is the potential and emerging technology widely being used to produce quality products with complicated profiles and customized features. Fused Deposition Modelling (FDM) process, a type of additive manufacturing technology using filament made of thermoplastic which is melted and subsequently extruded through nozzle. The main input process parameters of FDM are wall thickness, infill density, layer height, bed temperature, layer thickness, infill pattern, nozzle temperature etc. In this …
Published in Journal of Polymer & Composites · Vol. 13, Issue 2, 2025 · pp. 335–345 Read article
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Investigations On Use of Poly(3,4-Ethylenedioxythiophene): Poly (Styrene Sulfonic Acid) (PEDOT: PSS) Conductive Polymers for Design of Improved EEG Based Brain Computer Interface for Seizure Control and Analysis
Abstract: This research explores the application of Poly(3,4-ethylenedioxythiophene):poly(styrene sulfonic acid) (PEDOT:PSS) conductive polymers in the design of an enhanced Electroencephalography (EEG)-based Brain-Computer Interface (BCI) for seizure control and analysis. PEDOT: PSS, known for its high conductivity, flexibility, and biocompatibility, is employed to improve the efficiency and sensitivity of EEG electrodes, addressing challenges such as signal noise, skin-electrode impedance, and user comfort. The study evaluates the material’s properties, including its electrical conductivity, …
Published in Journal of Polymer & Composites · Vol. 13, Issue 3, 2025 · pp. 223–241 Read article
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In Silico Screening of Terminalia chebula Phytocompounds as Potential Inhibitors of NTCP and DDB1 in Hepatitis B Virus Infection
Abstract: Hepatitis B virus (HBV) infection is a major global health concern, and chronic carriers are at risk of developing cirrhosis, hepatocellular carcinoma (HCC), and even death. Existing treatments can effectively inhibit viral replication, but they achieve little eradication of the virus because of covalently closed circular DNA (cccDNA) retention. In this investigation, bioactive compounds of Terminalia chebula, a plant known for its hepatoprotective and antiviral properties in traditional medicine, were …
Published in Research & Reviews: A Journal of Drug Formulation, Development and Production · Vol. 13, Issue 1, 2026 · pp. 33–44 Read article
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Enhancing Surface Roughness of Polylactic Acid (PLA) 3D-Printed Parts Using CO₂ Laser Scanning: An Experimental Study on Parameter Optimization
Abstract: Fused deposition modeling (FDM) of polylactic acid (PLA) often suffers from poor surface finish due to the inherent layer-by-layer deposition process, limiting its use in high-precision applications. This study investigates CO₂ laser scanning as an efficient post-processing technique to reduce the surface roughness (Ra) of PLA parts while maintaining structural integrity. Specimens (100 × 80 × 5 mm) were fabricated with varying infill densities (35%, 70%, and 100%) to assess …
Published in Journal of Polymer & Composites · Vol. 13, Issue 6, 2025 · pp. 503–511 Read article
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Development of Biodegradable Poly (Lactic-Co-Glycolic Acid) (PLGA) Nanoparticles for Sustained Release of Insulin
Abstract: This research outlines the creation of biodegradable composite nanoparticles made from poly (lactic-co-glycolic acid) (PLGA) designed for the sustained release of insulin. The emphasis is on the interactions between the polymer and the drug at the interface, along with the dynamics of the release matrix. The in vitro release kinetics, surface morphology, encapsulation efficiency, particle size, and polydispersity of insulin-loaded PLGA nanoparticles were analyzed following their production via a double …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 1690–1699 Read article