This patient is a 13-year old boy who is the product of intrauterine insemination from a nonconsanguineous marriage. He had a normal prenatal period including normal fetal movements and a reported normal amniocentesis carried out due to advanced maternal age (39year old at the time of pregnancy). He was born at term by vaginal delivery and with normal Apgar score. However, during the neonatal p...

As we saw at the beginning of this course, the exponential growth of errors iterating a chaotic dynamical system implies that a computer generated trajectory from some initial condition will rapidly diverge from the true orbit due to truncation errors or approximations in the numerical integration scheme, so that after a relatively short time the computer generated orbit will have no correlatio...

Landscape fragmentation can be a major threat to the persistence of species with very specific habitat and area requirements (e.g., Wilcove et al., 1986). Such a species is the northern spotted owl (Strix occidentalis caurina), whose populations are experiencing fragmentation at a number of spatial scales. The analyses we discuss here focus on the geographic scale (Lord and Norton. 1990) and ar...

We have developed "high-performance" liquid-chromatographic methods for determining 4-aminopyridine, an acetylcholine-releasing drug, in serum, saliva, and urine. As little as 1 microgram/L can be detected by extracting the alkalinized sample plus the internal standard (3,4-diaminopyridine) into dichloromethane, mixing the organic phase with 1-pentanol, evaporating the dichloromethane, and inje...

Introduction: Diarrhea remains a major cause of death in children under 5 years are considered. However, following the overuse of antibiotics and the arbitrary use of broad-spectrum antibiotic, as well as diarrhea associated with antibiotic use is increasing. This study aimed to determine the role of probiotics in the prevention and treatments of diarrhea in children have been conducted.   Mate...