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CRITICAL INFRASTRUCTURE PROTECTION IN SAUDI ARABIA: A CASE STUDY ON PETROCHEMICAL INDUSTRY PROTECTION AGAINST TERRORIST ATTACKS AT JUBAIL INDUSTRIAL CITY (JIC)
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Extensions and Characterization of Optimal Maintenance Policies for Multistate Partially Observed Markovian Systems
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SEQUENTIAL INJECTION ANALYSIS (SIA) TECHNIQUE FOR THE ASSAY OF KETOCONAZOLE AND DICLOFENAC SODIUM IN DRUG FORMULATIONS WITH CHEMOMETRIC APPROACH
Get PDFComparative evaluation of Dy(III) selective poly(vinyl) chloride based membrane electrodes of macrocyclic tetraimine Schiff’s bases
Get PDFThree different derivatives of macrocyclic tetraimine Schiff’s base have been synthesized and explored as a neutral ionophores for preparing poly(vinyl chloride) based membrane sensors selective to Dy3+. The addition of sodium tetraphenyl borate and various plasticizers, viz., o-NPOE, DBP, DBBP, DOP and CN has been found to substantially improve the performance of the sensors. The best performance was obtained with the sensor no. 1 having membrane of Schiff’s base (SL-1) with composition (w/w) SL-1 (4.5%): PVC (30.5%): o-NPOE (59.5%): NaTPB (5.5%). This sensor exhibits Nernstian response with slope 19.4 mV/decade of activity in the concentration range of 10−8 to 1.0×10−2M Dy3+, performs satisfactorily over wide pH range of (2.8–7.2) with a fast response time (10 s). The sensor was also found to work satisfactorily in partially non-aqueous media up to 20% (v/v) content of acetonitrile, methanol or ethanol. The proposed sensor can be used over a period of 1.5 months without significant drift in potentials. The sensor has been also utilized for the determination of Dy3+ level in different soil samples
Nonlinear Predictive Control Using Particle Swarm Optimization: Applications to Power Systems
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Pixel Indicator High Capacity Technique for RGB Image Based Steganography
Get PDFImage based steganography uses the images as the cover media. LSB is a commonly used technique in this filed. Several scenarios of utilizing least significant bits within images are available. We merge between the ideas from the random pixel manipulation methods and the stego-key ones to propose our work, which uses the least two significant bits of one of the channels to indicate existence of data in the other two channels. This work showed attractive results especially in the capacity of the data-bits to be hidden with relation to the RGB image pixels