The Korteweg-de Vries (KdV) equation is known as a model of long waves in an infinitely long canal over a flat bottom and approximates the two-dimensional water wave problem, which is a free boundary problem for incompressible Euler equation with the irrotational condition. In this paper, we consider the validity of this approximation in the case of presence of surface tension. Moreover, we con...

Vanessa de Fátima Bernardes; Luis Otávio de Miranda Cota; Fernando de Oliveira Costa; Ricardo Alves Mesquita; Ricardo Santiago Gomez; Maria Cássia Ferreira Aguiar DDS, MS, Graduate student, Department of Oral Surgery and Pathology, School of Dentistry, Federal University of Minas Gerais, Brazil DDS, MS, PhD, Adjunct Professor, Department of Oral Surgery and Pathology, School of Dentistry, Feder...

We studied the variation of Newton ́s gravitational constant G, using the experimental data and the scalar-tensor theory for gravitation. We search for a fine tunning to match the datas and find possible scenarios for the history of this constant.

Acknowledgments We thank André Luiz Correa de Sousa, Márcia Leão, and Anna Elizabeth Martins Alves for collecting the samples and data from the patients; Sabrina Sampaio Bandeira for the patient impairment evaluation; Domingos Diniz, Miguel Canto, and the Programa de Ação Interdisciplinar at Oriximiná for logistical support and fruitful discussions; John Spencer for supplying the native PGL-I a...

Several nonlinear systems such as the Korteweg-de Vries (KdV) and modified KdV equations and lambda phi(4) theory possess periodic traveling wave solutions involving Jacobi elliptic functions. We show that suitable linear combinations of these known periodic solutions yield many additional solutions with different periods and velocities. This linear superposition procedure works by virtue of so...

a Facultad de Química y Biología, Departamento de Ciencias del Ambiente, Universidad de Santiago de Chile, Avenida B. O’Higgins 3363, Estación Central, Santiago, CP 9160000, Chile Departamento de Ciencias Químicas, Universidad Andrés Bello, Avenida Concepción, Talcahuano 7100, Concepción, Chile Departamento de Ciencias Químicas, Universidad Andrés Bello, República 237, Santiago, Chile Departame...

THE AIM The aim of the research work is the evaluation of auditory function in children with rare, genetically determined Brachmann-de Lange syndrome. METHODS Test material came from 18 children (7 girls and 11 boys) between 11 months and 18 years of age with Brachmann-de Lange syndrome who have been diagnosed and treated at ENT Department and Department of Paediatrics, Haematology, Oncology ...

A 4 month old male infant was referred to the genetic clinic for investigation of 'odd facies'. He had been admitted to the paediatric ward with respiratory infection and septicaemia. He was the first child of consanguineous parents (first cousins), born after 40 weeks of gestation. There was no history or suggestion of exposure to teratogens or infection during the pregnancy and delivery was n...