BACKGROUND Endurance running performance of African (AF) and non-African (NAF) athletes is investigated, with better performances seen for Africans. To date, no study has compared the age of peak performance between AF and NAF runners. The present research is an analysis of the age and running performance of top AF and NAF athletes, using the hypothesis that AF athletes were younger and faster ...

Introduction: Studies have suggested that sodium fluoride (NaF) has an inhibitory effect on the activity of endogenous matrix metalloproteinase enzymes. This study assessed the effect of a fluoride-containing adhesive on microtensile bond strength (µTBS) over time. Material & Methods: In this experimental study, 36 extracted  third molars were used to evaluate the µTBS of...

Naftopidil (NAF) is widely used for the treatment of benign prostatic hyperplasia and prevention of prostate cancer in elderly men. These patients receive a combination of drugs, which involves high risk for drug-drug interaction. NAF exhibits superior efficacy but must be administered at a much higher dosage than other therapeutic drugs. We previously showed that extensive glucuronidation of N...

A flowing afterglow discharge ion source with NaF vaporized into the flow produces the expected stable anions F-(NaF),, as well as the unusual species Na(NaF); and (NaF); (n < 17). The dominance of (NaF); suggests that it has a particularly stable structure. A fixed-frequency laser has been used to photodetach electrons from mass-selected ion beams extracted from the flowing afterglow. Photoele...

The paper proposes a τ−NAF method for scalar multiplication on Koblitz curves, which requires asymptotically 0.215m point additions in GF (2). For τ−NAF method, point quading operation (a→ a) is performed instead of point squarings. The proposed method is faster than normal τ−NAF method, which requires around m 3 point additions. However, like width w based τ−NAF methods, there is an overhead o...

AIM The aim of this in vitro study was to evaluate the effects of different sodium fuoride (NaF) concentrations and pH values on the Knoop hardness (KHN), surface roughness (SR), and morphology of bovine incisors bleached with 35% hydrogen peroxide (HP). MATERIALS AND METHODS Sixty-five bovine incisors were fragmented (5 mm(2) × 2 mm) and distributed in 5 groups: Control (unbleached), Low NaF...

Prostate-specific antigen (PSA) is produced by the female breast. Prior in vitro evidence suggests that PSA expression in breast epithelial cells is regulated by androgens and progestins but not estrogens. The purpose of this study was to determine whether (a) PSA expression in breast nipple aspirate fluid (NAF) and in serum is influenced by progesterone (PG); (b) the ability to obtain NAF decr...