mobile commerce is whatever electronic transfer or transaction via a mobile modem through a mobile net in which the true value or advance payment is done for goods, services or information. a mobile payment system should be beneficial for all related persons. for a payment system to be a successful system, end-user, seller, exporter and operators should see a additional value in it. end-user pr...

−In reversed-phase liquid chromatography (RP-LC), the separation of ionized compounds at neutral pH of the mobile phase is ineffective because these compounds easily become ionized and too hydrophilic to adsorb on the hydrophobic C18 stationary phase. The common method to separate ionized compounds in RP-LC is the usage of the ion pairing agent and the control of pH in the mobile phase. In this...

Zataria multiflora Boiss is used in traditional folk remedies as antiseptic, analgesic, carminative, anthelmintic medication. The main components of Z. multiflora are phenolic compounds such as thymol and carvacrol. The aim of this study was developed a simple and rapid method for determination of the thymol in different extracts of Z. multiflora by HPLC method. The dried aerial parts of Z. mul...

The main purpose of this research was to gain an understanding of the adoption behavior of mobile computing in Saudi Arabia. In particular, it aimed to acquire new insight into mobile computing trends, specifically in Saudi Arabia, in order to develop hypotheses and formulate precise criteria for mobile computing evaluation. In order to achieve these aims, the researcher created a focus group b...

The choice of analogue ion of the mobile phase additive is shown to significantly affect the analysis of quaternary ammonium compounds (QACs) in ion-pair reversed-phase high-performance liquid chromatography. A series of bromide-containing and dodecyl-sulfate-containing mobile phase additives are investigated using two QAC probe analytes. In all instances, the quaternary-ammonium-containing mob...

a solid-phase extraction (spe) method for sample clean-up and preconcentration followed by reversed-phase high-performance liquid chromatography (rp-hplc) with uv detection is reported for determination of polycyclic aromatic hydrocarbons (pahs) in the caspian seawater. a good resolution was obtained using acetonitrile:water (40:60) as mobile-phase for separation of these compounds. the effect ...

Mobile channels are often modeled using a well-defined Rice process. The statistics of its wrapped phase (i.e., phase values in [−π, π)), such as the mean, variance, and probability density function (pdf), are known. The absolute phase is the accumulated phase change over an observation interval. It can be calculated from the wrapped phase but contains more information. Its applications include...

a sensitive high performance liquid chromathography (hplc) analytical procedure was developed for the quantitive determination of trimethoprim (tm* and sulphamethoxazole (sm) in commercial dosage forms. c18 analytical column (stainless steel, 25 cm * 4.6 mm i.d.) was packed with 5-*m particles of the reversed phase material and used for assays. mobile phase containing 0.025 m sodium phosphate a...

The location management ability of a mobile agent system which enables a mobile agent to interact with others accurately by message passing beyond doubts stands important for the mobile agent system. At present, the location management of mobile agent consists of tracking phase and message delivery phase, both of which dutifully create or incur plenty of update messages and interaction messages...

styrene is an important constituent of widely used organic solvents in industries for production of various synthetic materials. the use of solid-phase extraction (spe) has grown and is a fertile technique of sample preparation as it provides better results than those produced by liquidliquid extraction. in this study, spe has been optimized, regarding sample ph, sample concentration, sample fl...