The General Time Reversible (GTR) model of nucleotide substitution is at the core of many distance-based and character-based phylogeny inference methods. The procedure described by Waddell and Steel (1997), for estimating distances and instantaneous substitution rate matrices, R, under the GTR model, is known to be inapplicable under some conditions, ie, it leads to the inapplicability of the G...

Resumo Introdução: Com o envelhecimento, é comum ocorrerem alterações em diferentes áreas da cognição, como a memória, função executiva, linguagem, desenvolvimento psicomotor e visoespacial. A atividade física regular, contudo, tem sido descrita um excelente meio de atenuar as degenerações provocadas pelo envelhecimento dentro dos domínios físico, psicológico social. Objetivo: Avaliar os efeito...

BACKGROUND Conventional treatment of destructive periodontal (gum) disease arrests the disease but does not usually regain the bone support or connective tissue lost in the disease process. Guided tissue regeneration (GTR) is a surgical procedure that specifically aims to regenerate the periodontal tissues when the disease is advanced and could overcome some of the limitations of conventional t...

OBJECT There is limited information on the relationship between patient age and the clinical benefit of resection in patients with glioblastoma. The purpose of this study was to use a population-based database to determine whether patient age influences the frequency that gross-total resection (GTR) is performed, and also whether GTR is associated with survival difference in different age group...

The complexity of the tissues and the healing process of the periodontal wound turn the development of therapies for the predictable regeneration of functional periodontal tissues, a challenging exercise. In the last decades, the guided tissue regeneration (GTR) emerged as a strategy to drive the innate regenerative properties of the tissues involved in the periodontal apparatus (gingiva, tooth...

An experiment combining a hyperinsulinemic euglycemic clamp procedure of four sequential 2-h periods and an isotope dilution method of [U-13C]glucose determined the effect of supplemental calcium propionate on blood glucose metabolism during insulin and glucose infusions in adult sheep. They were fed lucerne hay cubes and commercial concentrate with and without supplementary calcium propionate ...

We report a long-term survival case of a primary malignant intracerebral nerve sheath tumor (MINST) occurring in the right frontal lobe of a 13-year old boy. After the gross total resection (GTR), we have performed radiation therapy but it recurred 50 months after the surgery, so the second GTR was performed. Later, second tumor recurrence was found 4 months after the second surgery. Subsequent...

This systematic review focused on the question, if and to what extent enamel matrix derivative (Emdogain) [EMD]) promotes the regeneration of bone. The influence of combinations with other biomaterials was additionally evaluated. Twenty histomorphometric studies were included in this systematic review. Main results of the reviewed articles were (i) guide tissue regeneration (GTR) of infrabony d...

Strain induced crystallization (SIC) of peroxide vulcanized natural rubber (NR)/ground tire (GTR) composites is studied by combining mechanical and microstructural characterization techniques. It found that the incorporation GTR into NR matrix leads to more effective reinforcement at large strains room temperature in NR/GTR as compared neat NR. attributed (i) presence particles acting reinforci...