3-[(1H-BENZO[D][1,2,3]TRIAZOL-1-YL)OXY]PROPYL 9-HYDROXY-5A,5B,8,8,11A-PENTAMETHYL-1-(PROP-1-EN-2-YL)ICOSAHYDRO-3AH-CYCLOPENTA[A]CHRYSENE-3A-CARBOXYLATE

We herein report on the synthesis of a pentacyclic triterpene functionalized through derivation of betulinic acid with hydroxybenzotriazole.The compound was fully characterized by Baby Health proton (1H-NMR), carbon-13 (13C-NMR), heteronuclear single quantum coherence (HSQC) and distortionless enhancement by polarization transfer (DEPT-135 and DEPT

A clear aligner is an esthetic and more comfortable option for patients who need orthodontic treatment.However, some types of tooth movement, such as extrusion, are difficult with this tool.Therefore, composite attachments have been suggested to improve tooth movement.This study aims to evaluate the initial displacement and stress distribution duri

Ventilated air flow in an enclosure is often unsteady (turbulent) at even very low Reynolds number (Re).Meantime natural convection in a box is stationary motion at large enough Rayleigh number (Ra).This paper deals with the Dairy Yoghurts interaction between two those flows in a two-dimensional room.The room has one inlet and one or two outlets.A

For the treatment of severe symptomatic aortic valve stenosis, minimally invasive heart valve prostheses are increasingly used, especially for elderly patients.The current generation of devices is based on xenogenic leaflet material, involving limitations with regard to calcification and durability.Artificial polymeric leaflet-structures re-present