We give here an extension of the recent result of Kwong (which in turn extended earlier results of Cooman and McLeod and Serrin) on the uniqueness of the positive radial solution of a semilinear elliptic equation. When reduced to the special case considered by Kwong, our proof is shorter.

WL LAU MBBS, FRCOG, FHKAM (O&G) Department of Obstetrics and Gynaecology, Kwong Wah Hospital, Yaumatei, Kowloon, Hong Kong EC HUI MD, PhD Medical Ethics Unit, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong FK LAI B. Sc (N), MSSc (Counselling) TK LO MBBS, MRCOG, FHKAM (O&G) RKH CHIN MBBS, FRCOG, FHKAM (O&G) WC LEUNG MD, FRCOG, FHKAM (O&G), Cert RCOG (Maternal a...

O uso softwares como Microsoft Excel ou LibreOffice Calc para ensinar e exemplificar exercícios envolvendo modelos termodinâmicos é de fácil implementação em sala aula. Dessa forma, o objetivo do presente estudo foi avaliar a densidade dióxido carbono (CO2) estado supercrítico através 4 equações distintas (Peng-Robinson, Redlich–Kwong, Soave Redlich–Kwong van der Waals) dos parâmetros temperatu...