Search Results - Shiva Kumar

An optical back propagation (OBP) technique using Raman pumped dispersion compensation fibers (DCF) is investigated to compensate for nonlinear impairments in WDM systems in real time. The proposed inline OBP module consists of an optical phase conjugator, amplifiers and a Raman pumped DCF. In order...

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When the fiber dispersion is normal, there exists a pair of bright and dark solitons with orthogonal polarizations. When the power of the dark soliton (pump) on one polarization is stronger than that of the bright pulse (signal) on the other polarization, we found that the bright pulse is trapped in...

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Atherosclerosis is a serious cardiovascular disease because of its asymptomatic behavior at its initial stage. This study investigates the hemodynamics in an idealized stenosed carotid artery using Fluid – Structure Interaction (FSI) approach to enumerate the interaction of arterial wall and blood f...

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Single-photon avalanche diodes (SPADs) capable of single photon detection are promising optical sensors for use as receivers in optical wireless communication (OWC) systems. In SPAD-based receivers, the intersymbol interference (ISI) effect caused by dead time is an important drawback that limits pe...

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This study investigated the incorporation of egg shell powder (ESP) and fish scale powder (FSP) as partial cement replacements in self-compacting concrete (SCC) to advance sustainable construction practices. A comprehensive experimental program was conducted to evaluate the rheological, mechanical,...

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Reservoir computing (RC) is a bio-inspired framework suited for temporal data processing. Here we propose an all optical coherent RC for the equalization of the impairments of fiber optic (FO) system based on coherent detection. We compare the performances of the RC systems based on semiconductor sa...

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ABSTRACT Wild honey poisoning can cause serious cardiovascular complications, including bradycardia and hypotension, even with small amounts (1–2 teaspoons) consumed. Symptoms typically emerge within 30–45 min of ingestion. Early intervention with IV fluids and atropine is effective in most cases, b...

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The Publisher has been made aware of ethical breaches affecting this proceeding published in E3S Web of Conferences, Volume 430 (2023). These instances involve a specific author, K.K. Saxena who used citation manipulation and inappropriate references in 47 articles, for a total of 310 citations. We...

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In this study, a simple and effective approach was developed for the quantitative detection of serotonin. Hexagonal copper selenide nanostructures (CuSe) were employed to modify a disposable screen-printed carbon electrode (SPCE), and their ability to electrochemically detect serotonin in serum samp...

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This study investigates the use of digested sludge ash (DSA) as a modifier in bituminous mixtures, focusing on optimizing its proportions with bitumen to enhance performance properties and promote sustainability in road construction. Response Surface Methodology (RSM) was employed to systematically...

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Renal allograft compartment syndrome (RACS) is an early complication following kidney transplantation. We are reporting a case of RACS in a patient within few hours of renal allograft transplantation which was treated by emergency surgical decompression.