Rocket Plume Interactions for NASA Landing Systems

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Performance Analysis of CMOS and FinFET based 16-Bit Barrel Shifter

A barrel shifter shifts ‘n’ number of bits in one cycle. Barrel shifter can perform the following functions: shift left logical, shift left arithmetic, rotate left, shift right logical, shift right arithmetic and rotate right. The design of the barrel shifter is purely MUX based will improve its efficiency if Mux consumes less power. The MUX based SLC barrel shifter circuits are designed using Tanner EDA tools. Fin-type field-effect transistors ( FinFETs) are promising substitutes for bulk CMOS in nano - scale circuits. This paper compares the performance of barrel shifter using two different technologies on the basis of power consumption, time delay and power delay product DOI: 10.17762/ijritcc2321-8169.15067

UMA (Unlicensed Mobile Access): A New Approach towards Mobility

The purpose of this document is to describe the fixed-mobile convergence solution using Unlicensed Mobile Access (UMA) technology. This document describes elements for UMA access and convergence solution and the evolution towards the IP based network. UMA technology offers an alternative to the cellular radio access network (RAN), which uses the Global System for Mobile Communications (GSM) and General Packet Radio Service/Enhanced Data rates for Global Evolution (GPRS/EDGE) core circuit, data, and IMS services through IP-based broadband connections. To deliver a seamless user experience throughout these various access networks, the UMA specifications define a new network element, the UMA Network Controller (UNC), together with associated protocols for the secure transport of GSM and GPRS/EDGE, signalling, and bearer traffic over I

CHARACTERIZATION AND ANTIMICROBIAL SUSCEPTIBILITY PROFILE OF NON LACTOSE FERMENTING GRAM-NEGATIVE BACTERIAL ISOLATES IN A TERTIARY CARE TEACHING HOSPITAL OF CENTRAL INDIA

Objectives: The non-lactose fermenting Gram-negative bacilli (NLF-GNB) are notorious pathogens reportedly acquiring multiple drug resistance alarmingly and emerging as a public health threat globally. This study was conducted to isolate and identify these pathogens from clinical samples received routinely in our Bacteriology Laboratory and to analyze their antibiotic susceptibility patterns. Methods: In this cross-sectional study, the first 100 NLF-GNB strains isolated consecutively from 1218 clinical samples were included through convenience sampling. The samples were processed using standard microbiological techniques. Results: The most common isolate was Pseudomonas aeruginosa followed by Acinetobacter spp, Proteus spp, Shigella spp, Salmonella typhi, Providencia spp., and Morganella spp. P. aeruginosa and Acinetobacter spp. isolates were found to exhibit high susceptibility toward Colistin and Imipenem. Proteus spp. exhibited high sensitivity toward Imipenem, Aminoglycosides, Ceftazidime, and Cefepime. All Providencia isolates were susceptible to Amikacin, Cefepime, and Ceftriaxone. The only isolate of Morganella spp. was found to be susceptible to Amikacin, Cefepime, Ceftazidime, Piperacillin tazobactam, Ciprofloxacin, Imipenem, and Aztreonam. Shigella isolates exhibited very high susceptibility toward Imipenem followed by Gentamicin and Ceftazidime. All the isolates of S. typhi exhibited susceptibility toward Imipenem, Piperacillin tazobactam, Ceftazidime, Ceftriaxone, Cefoperazone sulbactam, and Chloramphenicol. 24% of test isolates were found to be Multidrug resistant. Conclusion: Antimicrobial surveillance is needed to implement appropriate timely interventions to restrict the spread of multidrug-resistant clones. Strict infection prevention and control practices, with judicious antibiotic prescription policy, may help in tackling this problem by obviating the selection pressure

Comparative analysis of different Current mirror using 45nm technology

Current mirror is one of the most important components of integrated analog circuits design. For high performance applications, accuracy, output impedance, slew rate and settling time of current mirrors are the most important parameters. The circuit made by current mode technique uses small area, consumes less power dissipation and achieves high operation speed. . In this paper we will analyze and compare the performance parameters of different current mirrors in 45 nm technology in Tanner EDA tool. The performance parameters are power dissipation, slew rate and Transconductance. The transconductance of proposed Low Voltage current mirror is far better than the other current mirrors. DOI: 10.17762/ijritcc2321-8169.15067

Effect of Rocker Length on the Dynamic Behavior of a Coupler Link in Four Bar Planar Mechanism

AbstractIt is well-known that the dynamic analysis of mechanisms operating at high speed cannot neglect the effects of link elastic flexibility. In fact this effect may affect the dynamic response of the output link motion, so that the mechanisms may fail to perform their assign tasks effectively. The dynamic analysis of high speed mechanism having rigid rocker length is carried out by using Finite Element Method (FEM) and the same is discussed in the present work. Moreover, the behavior of damped-flexible coupler under varying length of rigid rocker length is analyzed. Modeling and simulation of mechanism has been analyzed by using ANSYS and results are found to be in agreement with the experimental result mention in literature. It is observed that increase in length of rocker link gives rise in the strain value in middle of the coupler link and hence the length of rocker link should be kept as minimum as possible

Macular Hole Progression after Intravitreal Bevacizumab for Hemicentral Retinal Vein Occlusion

Macular edema secondary to retinal vein occlusion is commonly being treated with off-label intravitreal bevacizumab with good outcomes. A significant reduction in macular edema and improvement in visual acuity is seen following such a treatment with no serious adverse effects. In the reported case, a full-thickness macular hole was noticed one month after intravitreal bevacizumab for macular edema secondary to hemicentral retinal vein occlusion. On a detailed review of the pre- and postoptical coherence tomography scans, it was realized that there was a preexisting stage 2-3 macular hole which was masked by the hemorrhages and edema at the fovea and the macular hole had progressed following the injection