Conductive polymer composites are becoming more important and useful in many electrical applications. This paper reports on the carbon black (CB) reinforced polyvinyl chloride (PVC) conductive composites. filler CB was with thermoplastic PVC by compression molding technique to make The particle size of measured, as it affects conductivity Different types CB-PVC compression-molded were prepared, using contents from 5 30 wt %. tensile properties these studied compared. Improved obtained for...

The adsorption performance, kinetics, and thermodynamic parameters of reactive dyes on chitosan-treated cotton fabric are described in this research. batch experiment was carried out to investigate the influence pH, time, temperature, dye concentration, material liquid ratio Remazol Red RR Yellow RR, two widely used dyes. red yellow observed at λmax 517 419 nm respectively. For both with starting concentrations 0.0667 40 mg/L, greatest reported pH 11 (0.0009 0.1284 mg/g) 4 (0.0004 0.1038...

The present study involves the preparation and characterization of antibacterial nanofibers made from nigella/PVA mixer along with silver nanoparticles. Silver nanoparticles were efficiently synthesized by reduction AgNO3 while alcoholic extraction process was used to extract medicinal constituents form nigella. Then resulting solution electrospun into electrospinning technique under optimum processing conditions. developed nanofibrous mat characterized bacterial assay, moisture management...

Plastic waste causes severe environmental impacts worldwide and threatens the lives of all creatures. In medical field, most equipment, especially personal protective equipment (PPE), is made from single-use plastic. During COVID-19, usage PPE has increased, disposed in landfills after being used once. Worldwide, millions tons syringes are generated COVID-19 vaccination. A practical alternative to utilizing this recycling it reinforce building materials. This research introduces an approach...

This study reports the adsorption phenomena of metal complex acid dyes onto silk fabric. Two commercial namely Bestalan Yellow SF and Navy were adsorbed degummed The functional properties surface morphology fabric investigated with FT-IR spectroscopy FE-SEM respectively. typical absorption band C = O stretching was found at 1620 cm−1 indicating amide I structure C-N as well N-H bending vibrations observed 1510 suggesting β-sheet crystallites II proteins. effectiveness degumming performance...

In this paper, we analyze the performance of a non-data aided near maximum likelihood (NDA-NML) estimator for symbol timing recovery in wireless communications. The is evaluated an additive noise only channel. Performance analysis extended to fading channels characterized by Rayleigh fading, Weibull and log-normal appropriate variety transmission scenarios. probability distribution maxima estimates are derived, presented compared with simulation results. terms bit error rate (BER) variance...

In this letter, a closed form expression for the conditional bit error probability (BEP) with static timing errors of binary phase shift keying (BPSK) modulation over Rayleigh fading channel is presented. The expressions average BEP are then given dynamic assuming normalized has either Gaussian density function (pdf) or Tikhonov pdf. Numerical results to corroborate derived analytic presented obtained by averaging pdf errors.

This paper shows the effect of different bleaching agent on whiteness index and bursting strength cotton knitted fabric. Bleaching process uses three types agents namely hydrogen peroxide (H2O2), sodium hypochlorite (NaOCl) calcium Ca(OCl)2 with varying their concentration these are 1.5 g/l, 2.5 3.5 4.5 5.5 g/l. In same time, scouring was caustic soda, its for all same. It is obvious that increase concentration, increases, reduces.

In this paper, we analyze the performance of a non-data aided near maximum likelihood (NDA-NML) estimator for symbol timing recovery in binary digital communications. The analysis is performed an additive noise only channel and simulation results are extended to flat fading channel. probability distribution estimates derived, presented compared with results. terms bit error rate (BER) variance estimates. BER computed when operating under white Gaussian (AWGN) Rayleigh case Cramer Rao bound...

Purpose This study aims to ascertain the physiochemical characteristics of compost made from recycled cotton spinning waste (CSW) for Indian Spinach cultivation in Bangladesh. Method The fresh (CSW), ash (CSWA), rice husk (RH), (RHA) with varying ratios following open air composting method was determined. The utility resulting justified by applying it compared chemical fertilizer and control (no-compost) treatments. Results Among several options, prepared mixing 87% CSW + 13% (C3) (C4) found...

A data and channel aided maximum likelihood (DCA-ML) symbol timing estimator for cooperative communications operating in flat fading channels is presented. The performance of the evaluated terms bit-error-rate (BER) variance. BER various conditions compared to a non-data-aided near (NDA-NML) correlation based data-aided (DA-ML) estimator. For more severe DCA-ML performs better than NDA-NML DA-ML Three node communications, detect-and-forward relaying combining techniques are considered. gains...

A non-data-aided near maximum likelihood (NDA-NML) symbol timing estimator is applied to cooperative communications in fast flat-fading conditions. The performance of a three-node detect-and-forward communication system evaluated operating Rayleigh fading channels using various signal constellations with and without synchronization. Timing errors have significant effect on performance. lower complexity NDA-NML performs well for larger fading, when compared data aided (DA-ML) estimator.

Cerium doped barium titanate is prepared by conventional ceramic method. The dielectric studies of Ba1-x Cex TiO3 have been accomplished at room temperature over a frequency range 75 KHz to 30 MHz for x = 0.1 0.4 with pure BaTiO3. measurements the real and imaginary part constants show strong dependence. relaxation phenomena that take place cane be attributable damping dipole oscillator due application external field. In present experiment occurs about - 1MHZ. doi: 10.3329/jbas.v32i1.2445...

Numerical investigation using commercial software ANSYS FLUENT has been conducted on a single pass shell and tube heat exchanger with different number of segmental baffles baffle spacing. The optimization varies the achieved transfer rate negligible amount power consumption. becomes higher at certain limit space number. However, in consequence, pressure loss also increases increase rate. main motive this is to seek out impact drop minimize consumption as well optimize

In the fields of engineering, especially in heat transfer area, contribution fluid flows through different channels is remarkable. Among available shapes channel, sinusoidal wavy are considered more efficient areas such as cooling electronic devices, boilers, biomedical applications, etc., due to their increased recirculation capability mixing flowing fluids - which increases performance, consequently. The optimization channel design and modelling has been an engineering problem recent...

The adsorption performance, kinetics, and thermodynamic parameters of reactive dyes on chitosan-treated cotton fabric are described in this research. batch experiment was carried out to investigate the influence pH, time, temperature, dye concentration, material liquid ratio Remazol Red RR Yellow RR, two widely used dyes. red yellow observed at λmax 517 419 nm respectively. For both with starting concentrations 0.0667 40 mg/L, greatest reported pH 11 (0.0009 0.1284 mg/g) 4 (0.0004 0.1038...