Change in transmitting time of impulses along axons is traditionally attributed to two parameters: the myelin formation and the diameter of neurite, both rising during the postnatal development. In the previous study, we showed that conduction velocity of the fibers projecting from the thalamus to the layer IV of the somatosensory (barrel) cortex increases as a function of age. However, the con...

The life history of Enochrus quadripunctatus Herbst was studied in the laboratory. The duration of each developmental stage, larval behavior, and preimaginal mortality rate were determined. It takes the insect a total of 43 days from hatching to reach the adult stage, with a high mortality rate in the first stadium. The mortality rate decreases as the beetle passes through the immature sta...

background disability is a relatively common problem in children. the pattern of admission in these children and their common infections may differ from other children because of their special disabilities. objectives we aimed to determine common infectious diseases resulting in admission of these children to our hospital. patients and methods between september 2006 and september 2007, 60 disab...

Conservation of the order in which events occur in developing mammalian brains permits use of regression theory to model the timing of neural development. Following a small adjustment to account for a systematic variability in primate cortical and limbic systems, the model is used to generate a 95-event/nine-species matrix that predicts aspects of neurogenesis and axonal outgrowth in the brains...

Background: Asphyxia is a perinatal accident with a high mortality rate, therapeutic hypothermia in both head or whole body was suggested as effective therapeutic methods. In this study, we compare these methods in neonates with asphyxia.Methods and Materials: 16 neonates with asphyxia in two hospitals including Alzahra(head hypothermia) and Taleghani hospital (total body hypothermia) went unde...