Abstract A convenient and efficient solvent-free, facile, one-pot three-component graphene oxide catalysed approach has been described for the synthesis of chromeno-[4,3-b]quinolin-6-one derivatives from nanosculpt 4-hydroxycoumarin with aldehydes and aromatic amines.Graphene oxide (GO) has proved to be a new class of heterogeneous carbocatalyst wh
This paper presents an original stochastic method of optimization (PGSL) for optimum design of truss structures.PGSL (Probabilistic Global Search Lausanne, developed at the Swiss Federal Institute of Technology at Lausanne) has been inter-faced with a finite element code, then applied and tested on several size optimization problems of plane truss
BackgroundStomach pain is an ailment that occurs frequently in the general population.It is not unusual if such stomach issues produce some amount of stress in an individual, but it can be moen rothbury faucet worrying if these pains lead to significant mental health problems.The relationship between some abdominal pain, such as bowel syndrome, and
Alotaibi MF, Al-Joufi F, Abou Seif HS, et al.Drug Des Devel Ther.2020;14:4003-4019 The Editor and Publisher of 4 post backdrop stand Drug Design, Development and Therapy are retracting the published article.Concerns were raised regarding the duplication of images in Figure 2 and an investigation found overlap in the images for Figures 2D and 2E, de
Tropical cyclone (TC) genesis prediction is a major scientific challenge to the TC operation and research community.This report surveys the current status of TC genesis forecasts by a number of major operational centers covering the key ocean basins across both hemispheres.Since IWTC-9, we see an emergence of probabilistic TC genesis forecast produ