instrument fracture within the root canal during root canal treatment is an unwanted and frustrating complication. the fractured segment may hinder cleaning and shaping procedures with potential impact on prognosis of treatment. fracture of endodontic instrument often results from incorrect use or overuse. if breakage occurs clinically, the patient should be informed of the incident and conside...

During early fetal life of males, conversion of testosterone (T) to 5a-dihydrotestosterone (DHT) via the action of 5a-reductase in the external genital tissues is essential for complete sexual differentiation of male external genitalia. Measurement of low concentrations of DHT in serum of affected prepubertal males confirms the type of sexual disorder (1,2). Although commercial methodologies ha...

An experiment was conducted using male Ross×Ross 708 broiler chicks to determine the effect of oil extraction from corn distillers dried grains with solubles on apparent ileal amino acid digestibility from 23 to 31 d of age. On an as-fed basis, ether extract concentrations were determined as 5.4% (L-distillers dried grains with solubles), 7.9% (M-distillers dried grains with solubles), and 10.5...

Fewer than 15% of gastrointestinal stromal tumors (GIST) in pediatric patients harbor KIT or platelet-derived growth factor receptor A (PDGFRA) mutations in contrast to a mutation rate of 80% in adult GISTs. However, some therapeutic inhibitors of KIT have efficacy in pediatric GIST, suggesting that KIT may, nevertheless, play an important role in oncogenesis. In adult GIST, characteristic cyto...

in this research, rehydration behavior of dried figs was studied at different temperatures (25, 60, 70, 80, and 90°c). the rehydration kinetic was examined using the four most frequently used empirical models, namely, weibull, peleg, first-order, and exponential association models. the weibull model gave the highest coefficient of determination (r2) and the lowest values of root mean square err...