The pineal hormone melatonin plays a central role in the regulation of seasonal reproductive cycles in mammals and several studies have implicated the suprachiasmatic nucleus (SCN) as a target on which melatonin acts. The Syrian hamster is a long-day breeder which exhibits gonadal regression when housed in short (less than 12.5 h) daily photoperiods or injected daily with melatonin in long phot...

O Seminário de Iniciação Científica (SEMIC), da Universidade Estadual Feira Santana (UEFS), é um evento anual realizado durante a Semana Nacional Ciência e Tecnologia tem como objetivo incentivar os alunos graduação com bolsas divulgarem resultados finais das suas pesquisas através exposições orais pôsteres. Esta edição Revista Sitientibus apresenta seis trabalhos iniciação científica premiados...

This article aims to provide a simple robust method to test the parameters of a normal population by using the new diagnostic tool called the “Forward Search” (FS) method. The most commonly used procedures to test the mean and variance of a normal distribution are Student’s t test and Chi-square test, respectively. These tests suffer from the presence of outliers. We introduce the FS version of...

As COVID-19 was declared as a pandemic by the World Health Organization (WHO) in March 2020, it is an emerging need to discuss different aspects of this pandemic. In any pandemic, valid and rapid laboratory diagnostic tests are critically important for early diagnosis, which will increase the rate of successful treatment and more importantly prevent the spread of the disease.