Onion peel derived carbon nanoparticles incorporated polysulfone membranes: enhanced dye removal from water.

The ongoing discharge of hazardous dyes from industrial processes has intensified global water pollution, posing serious threats to aquatic ecosystems and human health. Addressing this challenge, our study explores the potential of bio-based carbon nanomaterials (CNM), synthesized from onion peel biowaste and designated as ON11, as effective agents in dye removal. These CNMs were incorporated into a mixed matrix membrane (MMM), using polysulfone (PSU) as the membrane substrate, to enhance dye adsorption.

Ruthenium-catalyzed Heck coupling of 3-arylidene-oxindoles with alkenes: a facile synthesis of 3-allylidene-2(3)-oxindoles.

A simple and efficient Ru(II)-catalyzed olefination of 3-(arylbenzylidene)indolin-2-ones with alkenes is described. This is an atom and step-economical strategy with a wide substrate scope, good functional group tolerance, and suitability for gram scale synthesis. A plausible mechanism is also proposed for this synthetic transformation involving the formation of a 5-membered ruthenacycle and insertion of the alkene followed by β-hydride elimination to deliver the desired product.

Non-osseous intradural tuberculoma of the thoracic spine with compressive myelopathy.

Key Clinical Message: An uncommon form of CNS tuberculosis called non-osseous IDEM tuberculoma frequently results from paradoxical drug interactions. It should be considered one of the differentials when patients receiving ATT experience acute neurological impairment.

Abstract: Tuberculoma affecting the spinal cord is a rare condition in modern times.