a high performance liquid chromatography method was studied for determination of 18 ?-glycyrrhetinic acid in glycyrrhiza glabra l. (licorice) extract. the operating condition were c-18 reversed phase column (vp-ods, (250×4.6 mm, 5 mm)) at room temperature, acetonitril/phosphoric acid (3/1) as mobile phase, at flow rate of 0.6ml/min (0-8min), 0.4ml/min (8-20min) and uv detection at 230 nm. the r...

Grid computing is a term referring to the combination of computer resources from multiple administrative domains to reach a common computational platform. Mobile Computing is a Generic word that introduces using of movable, handheld devices with wireless communication, for processing data. Mobile Computing focused on providing access to data, information, services and communications anywhere an...

Grid computing is a term referring to the combination of computer resources from multiple administrative domains to reach a common computational platform. Mobile Computing is a Generic word that introduces using of movable, handheld devices with wireless communication, for processing data. Mobile Computing focused on providing access to data, information, services and communications anywhere an...

Background: Distracted walking is a major cause of pedestrian fatalities. Along with the expansion and popularity of mobile phones, their impacts on pedestrian safety, especially when crossing urban intersections have attracted a lot of attention. The purpose of this study is to evaluate the effects of mobile-phone use on pedestrians’ crossing behavior when passing signalized intersections. Ma...

a sensitive procedure for determining total vitamin c (ascorbic acid + dehydrate ascorbic acid) in a blood drop from a finger prick, before and after the adminis- tration of a vitamin c tablet is described. analysis was carried out by high per- formance liquid  chromatography with  electrochemical detection (hplc/ec). measurements were taken one hour, two hours and six hours after the administr...

a stability indicating high-performance liquid chromatography (hplc) method wasvalidated and used to study the degradation of cetirizine dihydrochloride in acidic and oxidativeconditions. the separation was carried out on a symmetry c18 column and a mixture of 50 mmkh2po4 and acetonitrile (60:40 v/v, ph = 3.5) was used as the mobile phase. the method waslinear over the range of 1-20 μg/ml of ce...

background: attendance management is one of the most important issues in the educational institutions. the traditional method for attendance recording is manually recording by professors in the school or university which is associated with several problems. we proposed the design and utilization of an electronic application for students’ attendance recording via smartphones and pcs. methods: th...

W e developed a multi layered model for t h e purposes such as mobil i ty m a n a g e m e n t , mobile activity modeling, and opt imal paging and mobile location tracking. A bott leneck in the forward control channel (FOCC) i s caused due t o constraints such as the l imited bandwidth and number of radio frequency channels, and i n e f i c i e n c y of convent ional mobile paging methods in mob...

Botnets have become one of the most serious security threats to the traditional Internet world. Although the mobile botnets have not yet caused major outbreaks worldwide in cellular network, but most of the traditional botnet experience can be transferred to mobile botnet on mobile devices, so mobile botnet may evolve faster since techniques are already explored. From the theoretical work of so...