INTRODUCTION AND METHODS. Serotonin N-acetyltransferase (NAT) is a rate-limiting enzyme in melatonin biosynthesis. Its activity (which parallels melatonin levels) follows a diurnal rhythm with high values at night and low values during day-hours of any light-dark illumination cycle (1). In retinas NAT is expressed by photoreceptors (2). Exposure of animals to light at night suppresses the noctu...

carbon spheres were fabricated by hydrothermal method and their structural properties were investigated. carbon spheres with average sizes around of 230, 320 and 430 nm were synthesized in different concentration of glucose aqueous solution and different hydrothermal reaction time. the temperature of 180 °c by a hydrothermal reaction was fixed in all of glucose concentration and hydrothermal re...

The present study was conducted aiming at investigating the effect of social media-based intervention according to Theory Planned Behavior (TPB) control academic stress students. This comes in two descriptive and quasi-experimental sections Academic Year 2018–19. In order determine planned behavioral constructs on levels, 320 quasiexperimental organized a educational TPB 180 Data collection thr...

People who supplement their diets with extra zinc usually have potentially harmful changes in lipoprotein metabolism. Because zinc can interfere with copper metabolism and copper deficiency has produced similar changes in lipid metabolism in animals and people, the hypothesis that lipid alterations from high zinc intakes are accompanied by changes in copper metabolism was tested. Progenies of s...

Early semantic effects (<200 ms) for single word processing have been reported inconsistently, though not rarely, in the ERP literature. It may be hypothesized that the frequently reported later lexical effects are related to the lengthy processing of long/scarcely familiar words or task factors. In this paper, we have investigated the timing of brain activation during processing of native vs. ...

MicroRNA-320 (miR-320) downregulation has been reported in several human cancers. Until now, its expression pattern and biological roles in human cancer remain unknown. This study aims to clarify its clinical expression pattern and biological function in gastric cancers. We found miR-320 level was downregulated in gastric cancer tissues. miR-320 mimic was transfected in SGC-7901 cells with low ...

Denoting by (rn)n≥1 the increasing sequence of the numbers p with p prime and α ≥ 2 integer, we prove that rn+1 − 2rn + rn−1 is positive for infinitely many values of n and negative also for infinitely many values of n. We prove similar properties for r n−rn−1rn+1 and 1 rn−1 − 2 rn + 1 rn+1 as well.

1 of 2 DESCRIPTION A 29-year-old professional athlete was referred for cardiac evaluation after a syncope occurring during strenuous exercise. Twelve-lead ECG showed Brugada-like pattern ( fi gure 1 ), but both fl ecainide and genetic tests were negative. ECG Holter and echocardiogram were normal. ECG stress test showed no signifi cant ST-segment changes. In order to rule out coronary artery di...