Publications by authors named "P Keerthana"

A facile and green chemical approach was successfully developed to construct functionalized quinolinones utilizing substituted alcohols, alkyl acetoacetate, and α-bromo ketones. Various quinolinones bearing either electron-rich or electron-deficient groups at different positions were synthesized in moderate to good yields under mild reaction conditions. The plausible mechanistic pathway for this transformation is supported by experimental evidence and control experiments.

View Article and Find Full Text PDF

Background: In India, persons with hearing impairment who benefit from hearing aids can acquire a driving license. The law mandates helmet use while driving two-wheelers. Using a hearing aid with a helmet on may be a challenge, but it is paramount to understand the difficulties the hearing aid users face.

View Article and Find Full Text PDF

Chlorpyrifos (CP) is one of the most popular organophosphorus pesticides that is commonly used in agricultural and nonagricultural environments to combat pests. However, several concerns regarding contamination due to the unmitigated use of chlorpyrifos have come up over recent years. This has popularized research on various techniques for chlorpyrifos detection.

View Article and Find Full Text PDF

Background: Obstructive sleep apnea (OSA) is a condition that affects a patient's ability to sleep normally, predisposing them to many risks and reduced quality of life. Myofunctional therapy has been proven to increase the airway space according to literature.

Aim: To report the effects of AdvanSync2 Class II corrector in the management of 3 orthodontic patients who reported sleeping difficulties due to breathing problems and retrognathic mandible.

View Article and Find Full Text PDF

The formation of an inclusion complex between hydroxypropyl-β-cyclodextrin (H-CD) and 4-acetylphenyl-4-(((6-chlorobenzo[d]thiazol-2-yl)-imino)-methyl)-benzoate (L) was investigated by FT-IR, H-NMR, X-ray diffraction (XRD), FT-Raman, scanning electron microscope (SEM) techniques in the solid-state, absorption and emission spectroscopy in the liquid state and the virtual state as molecular docking technique. The binding properties of the inclusion complex (H-CD: L) with cations in deionized water was observed via absorbance and photoluminescence (PL) emission spectroscopy. The fluorescence probe (H-CD: L) inclusion complex (IC) was examined for several heavy metal cations, and identified that the PL emission wavelength of the complex displayed a continuous rise in the fluorescence intensity for Hg.

View Article and Find Full Text PDF