n v v Jyothi

• Sri Venkateswara University

About Abstract A series of thiazole-piperazine sulfonamide hybrids (8a-k) were synthesized, characterized and subsequently tested on Alzheimer's disease (AD) targets, including acetylcholinesterase (AChE), butyrylcholinesterase (BChE), and the ABTS radical, to assess their effectiveness. Three of the target analogues 8c, 8e and 8g exhibited augmen...

In the present study, densities (ρ) and speeds of sound (u) of binary mixtures of trans-cinnamaldehyde (trans-CA) with 1-butanol (1-BuOH), isobutanol (i-BuOH), 1-pentanol (1-PtOH), isopentanol (i-PtOH) covering the entire composition range, at temperatures of (298.15, 303.15, 308.15 and 313.15) K and atmospheric pressure have been reported. Experim...

In the present work, experimental density (ρ) and speed of sound (u) data for the binary mixtures of benzyl alcohol with acetic acid, propionic acid, and n-butyric acid have been reported over the complete range of mole fraction at 298.15 K ≤ T ≤ 313.15 K. Excess volumes (VE ), excess isentropic compressibilities (κs E ), excess partial molar volum...

Densities (ρ) and speeds of sound (u) of 1-butyl-3-methylimidazolium methyl sulphate, [C4C1im][MeSO4] with acetonitrile (ACN), propionitrile (PCN) and n-butyronitrile (n-BCN) in the complete composition range at temperatures between 298.15 K and 313.15 K with 5 K intervals and atmospheric pressure is reported. Solute-solvent interactions have been...

The thermophysical behavior of the binary mixtures trans-cinnamaldehyde (CA) with alcohols namely, methanol (MO), ethanol (EO), propanol (PO), isopropanol (IPO) has been studied through the measurement of density (ρ), speed of sound (u), over the entire mole fraction range at T = (298.15, 303.15, 308.15, 313.15) K under atmospheric pressure. Excess...

In the present study, microwave assisted biogenic synthesis of silver nanoparticles (Ag NPs) was carried out by using aqueous leaf extract of Lepidagathis cristata (L. cristata) which can act itself as a reducing and capping agent. This method was very precious due to their economic and eco-friendly benefits. The microwave assisted biogenic synthes...

Herein, we have reported an eco-friendly and facile scheme for the synthesis of copper nano particles supported iron oxide magnetic nano particles(Cu/Fe3O4 MNPs) using the extract of Aeglemarmelos (AM) leaves as a reducing and capping agent. The synthesized material ([email protected]/Fe3O4 nano composite) was characterized by various techniques. T...

In the present paper, we report new experimental data on density (ρ) and speed of sound (u) in binary liquid mixtures of 1-ethyl-3-methylimidazolium hydrogen sulphate, [emim][HSO4] with polar protic solvents ethanol (EtOH) and 1-propanol (n-PrOH) and aprotic solvent, dimethyl sulphoxide (DMSO) over the complete range of mole fraction at 298.15 K ≤...

The molecular interactions in the binary mixtures of benzylalcohol (BnOH) with ethylacetate (EA), n-propylacetate (PA) and n-butylacetate (BA) have been analyzed using the experimental densities (ρ) and speeds of sound (u) over the whole range of composition at T = (298.15, 303.15, 308.15 and 313.15) K under atmospheric pressure. From the measured...

A simple and rapid method using two imine ligands,(E)-N¹-(2-hydroxy-5-nitrobenzylidene) isonicotinoylhydrazone and 2-(4-fluoro benzylideneamino) benzenethiol for the analysis of nickel(II) is proposed. The ligands react with nickel(II) at pH 4.0 and 4.7 to form red and pale purple complexes respectively with a stoichiometric ratio's of 1:1. The com...

Bovine serum albumin is a single peptide chain containing protein. It has numerous biochemical and pharmacological applications including enzyme-linked immunosorbent assay, immunoblots, and immunohistochemistry. It is also used as a nutrient in cell and microbial culture. In restrive digestion, BSA is used to stabilize some enzymes during the diges...

A simple and rapid method was developed with the two novel Schiff's base ligands, (E)-N′-(2-hydroxy-5-nitrobenzylidene)isonicotinoylhydrazone and 2-(4-fluoro benzlideneamino)benzenothiol for monitoring the cadmium(II) in different water and soil samples. The two ligands react with cadmium(II) at pH 4.9/5.7 to form pale yellow/pale brown complexes w...

The surfaces of bio magnetite nanoparticles were functionalized with 3-Mercaptopropionic acid (3MPA) and used as a high-capacity and recyclable adsorbent for the rapid removal of Ni(II) from aqueous solution. The 3 MPA@Fe3O4 MNPs were characterized by Fourier transformed infrared analysis (FT-IR), transmission electron microscopy (TEM), energy disp...

We described a novel and eco-friendly method for preparing Fe3O4-Ag core shell nanoparticles (CSNPs) with high magnetism and potent antibacterial activity. The Fe3O4-Ag CSNPs were obtained using waste material of Vitis vinifera (grape) stem extract as the green solvent, reducing and capping agent. The result recorded from X-ray powder diffraction (...

Vanillin-2-amino nicotinic acid (VANA) has been proposed as new analytical reagent for the direct non-extractive spectrophotometric determination of Arsenic. The reagent reacts with arsenic in acidic medium (pH 5.0, Sodium acetate-acetic acid buffer) to form light greenish yellow colored 1:1 (M:L). The colour reactions are instaneous and the maximu...

We described a novel and eco-friendly approach to remove toxic heavy metal of Pb(II) by using dimercaptosuccinic acid (DMSA) anchored Fe3O4 magnetic nanorods (MNRs) which were synthesized via facile method utilizing Punica Granatum rind extract which was a non toxic waste material. The DMSA@Fe3O4 MNRs were characterized by X-ray diffraction (XRD),...

Two novel ligands, (E)-N1-(2-hydroxy-5-nitrobenzlidene) isonicotinoylhydrazone (HNBISNH)/2-(4-fluoro benzlideneamino)benzenethiol (FBBT) were synthesized and used for the quantification of copper (II) in various water and soil samples. HNBISNH/FBBT interacts with copper (II) to form 1:1 [L:M] orange /brick red color complexes in presence of phospha...

In the present work, Fe3O4 magnetic nanoparticles (MNPs) are synthesized via plantain peel extract by the biogenic method. The reaction process is simple, eco-friendly and convenient to handle. These MNPs are characterized by X-ray diffraction, transmission electron microscopy, energy-dispersive spectroscopy, Fourier transform infrared spectroscopy...

An enrichment separation procedure for the atomic absorption spectrophotometric determinations of Cu(II) and Ni(II) ions in common edible fishes was established. The 2-[(2-hydroxynaphthalen-1-yl)diazenyl]-5-methylbenzene-1,3-diol (HNDMD) complexes of the analyte ions at pH 6.0 were adsorbed on the p-octylpolyethylene glycolphenylether (Triton X-100...

New and economical column methodology was discussed in this paper for the determination of Cobalt (II) and Nickel (II) in various water systems. The method was based on the complexation of (E)-N 1-(2-hydroxy-5-nitrobenzlidene)isonicotinoylhydrazone (HNBIOH) with Cobalt(II) and Nickel(II) in a disposable syringe which acts a column loaded with comme...

A micro organism Lactic acid bacteria as an immobilized cell on a solid support was presented as a new biosorbent in a simple and sensitive spectrophotometric determination of As(III) in various samples using IH-benzo [d] imidazole-2-thiol (max 256 nm) at pH 3.0 -4.0. Beer's law was obeyed over the range of 0.01-0.1 μg L-1. Here we show that arseni...

Levels of zinc, copper, lead and cadmium have been determined in some medicinally important leaves by differential pulse anodic stripping voltammetry (DPASV). High pressure digestion with nitric acid (HPA) was used for sample digestion. The accuracy of the method was verified by the parallel analysis of leaves with inductively coupled plasma atomic...

A differential pulse polarographic (DPP) method for the determination of pendimethalin is described based on the reduction of a nitro group at a dropping mercury electrode in BR buffers of pH 2.0 to 12.0 using 25% acetone-water mixtures as a solvent. Also, a cyclic voltammetry (CV) technique has been used to study the behavior of pendimethalin at a...

Simultaneous determination of ultra-trace concentrations of copper and zinc in Allamanda cathartica L., a medicinal plant, by anodic stripping voltammetry in differential pulse mode on a hanging mercury drop electrode is described. The minimum amount that can be determined by voltammetry is found to be 0.42 for Cu and 0.36 μg dm-3 for Zn. Interfere...

Electrochemical behaviour of Methomyl has been studied using d.c, a.c. polarography, differential pulse polarography and cyclic voltammetry in ethanol-water mixtures. Kinetic parameters were evaluated and reported. Differential pulse polarographic procedure is described for the estimation of methomyl in its formulations and the method has been appl...