A bit-serial architecture for a multiplierless DCT

This paper describes the implementation of a multiplierless 1-D DCT which is also applicable to a 2-D computation. The key idea is based on the binary DCT of which multipliers are replaced by lifting parameters that essentially are shifts and adds. For low power applications and smaller hardware size, a bit-serial architecture was invoked in the implementation of such an algorithm. Varying data word length, MSE obtained form our approach and some similar algorithms are also investigated and reported

Adsorptive removal of ciprofloxacin and isoniazid from aqueous solution

This paper describes study of ciprofloxacin and isoniazid removal from aqueous solutions using coal fly ash (FA), kaolinite, perlite, talc and vermiculite. The adsorptive features of the adsorbents were evaluated for ciprofloxacin and isoniazid with regards to the effects of contact time, pH, the solid/liquid ratio and antibiotic concentration. All adsorbents were sterilised by dry heat before use to avoid the proliferation of antimicrobial resistance by the bacteria present on the adsorbents during experiments. The regression correlation coefficients indicate that the Langmuir model gives the best fit for the sorption of both antibiotics onto FA and talc, ciprofloxacin onto kaolinite, and isoniazid onto perlite and vermiculite with R2 values ranging from 0.908 – 0.999. The Freundlich isotherm best describes the sorption of ciprofloxacin onto vermiculite and isoniazid onto kaolinite with R2 values of 0.999 for both. The Tempkin model best describes the sorption of ciprofloxacin onto perlite with an R2 = 0.997. The values of the Freundlich exponent, 1/n, range from 0.221 – 0.998, indicating a favourable adsorption of ciprofloxacin and isoniazid onto the adsorbents. The heat of sorption, B, calculated from the Temkin plots has values ranging from 0.018 – 10.460 J/mol, indicating a physical adsorption process (physisorption). Adsorption equilibrium was achieved after 30 min for both antibiotics and the kinetic data obtained conforms best to the pseudo-second order equation with R2 values ranging from 0.998 – 0.999. The removal of ciprofloxacin and isoniazid by all adsorbents except FA was strongly influenced by the pH suggesting that electrostatic interactions play a major role in the adsorption processes

Preparation and mechanical performance of Cf-SiCf-(Al 2

The Cf-SiCf-(Al2O3p)/KGP composites were successfully prepared by the method that mixing a kind of hybrid fiber preform pre-developed and geopolymer resin. The synergistic effects of the hybrid fibers and Al2O3 particles on the composites were investigated. Results show that all the composites showed typical amorphous structure. Mechanical properties of the Cf-SiCf-(Al2O3p)/KGP composites were improved remarkably due to the addition of the hybrid fibers and Al2O3 particles. The flexural strength and Young’s modulus of the Cf-SiCf-(Al2O3p)/KGP composites with 1 mm length SiCf were reached 62.4±2.1 MPa and 24.1±1.6 GPa, respectively. The Cf-SiCf-(Al2O3p)/KGP composites showed non-catastrophic behavior rather than the catastrophic failure

Thermal resistant alkali-activated materials using argillite and two types of solution

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