Positron source investigation by using CLIC drive beam for Linac-LHC based e(+) p collider

WOS: 000306249000009Three different methods which are alternately conventional, Compton backscattering and Undulator based methods employed for the production of positrons. The positrons to be used for e(+) p collisions in a Linac-LHC (Large Hadron Collider) based collider have been studied. The number of produced positrons as a function of drive beam energy and optimum target thickness has been determined. Three different targets have been used as a source investigation which are W-75-Ir-25, W-75-Ta-25, and W-75-Re-25 for three methods. Estimated number of the positrons has been performed with FLUKA simulation code. Then, these produced positrons are used for following Adiabatic matching device (AMD) and capture efficiency is determined. Then e(+) p collider luminosity corresponding to the methods mentioned above have been calculated by CAIN code. (C) 2012 Elsevier B.V. All rights reserved

A feasibility study of TAC IR-FEL project

WOS: 000280601700009We have performed preliminary simulation of amplifier mode operation of Turkish accelerator complex (TAC) infrared free electron laser (IR-FEL) facility which is designed to operate in oscillator mode. FEL power values of amplifier mode are explored using 3D SIMPLEX 1.3 (X-ray FEL Practical Simulator) simulation code and it is argued that the same or higher amount of power of TAC IR-FEL planing to obtain in the oscillator mode, could be obtained in the amplifier mode, using same undulator and electron beam parameters with a small modification. (C) 2010 Elsevier B.V. All rights reserved.Turkish State Planning Organization (DPT) [DPT2006K-120470]Authors would like to thank Takashi Tanaka for useful discussion on SIMPLEX, and Zafer Nergiz and Asim Soylu for reading the manuscript. This work has been supported by Turkish State Planning Organization (DPT), Grant no: DPT2006K-120470

Real time noise-cancellation using ICA, PSO and PE [BBA, PSO ve SPÖ kullanilarak gerçek zamanli gürültügi̇deri̇mi̇]

In order to provide noiseless transmission of speech in wireless communication systems a real-time implementable noise cancellation algorithm is developed. Speech and noise sources are not known but only their mixtures are observed. That system is modeled with instantaneous mixture model. Combination of independent component analysis (ICA) and particle swarm optimization (PSO) algorithms is used to separate speech and noise. However, ICA has an ambiguity such that it is not possible to know which one of the separated signals is speech or noise. As a result, the transmitted signal can be noise, instead of speech. To overcome this ambiguity problem, a pitch extraction (PE) algorithm is developed and combined with ICA-PSO. ICAPSO-PE algorithm is implemented in MATLAB. Contributions of this work are modifying objective functions of ICA algorithm to make them more robust, combining ICA with PSO to make it work fast and robust, and overcoming the ambiguity problem using PE algorithm. © 2012 IEEE

Be Aware of Critical Drugs in Emergency Departments: An Extreme Iatrogenic Insulin Overdose via Subcutaneous and Intramuscular Routes

Introduction: Insulin is a highly used parenteral medication in emergency departments. Although most severe insulin overdoses occur as suicide attempts, medication errors can be the reason. We aimed to highlight the potential medication errors in emergency departments due to the poor control of critical drugs like insulin and the similarities between the brand names of drugs, as we experienced during this case

Laparoscopic Appendectomy Using Hem-o-lok Polymer Clips: A Single-Center Experience

Although the surgical technique of laparoscopic appendectomy (LA) stump has been well understood, there are many alternative techniques in relation to torocar positioning and closure of appendicular stump. In recent times, Hem-o-lok polymer clips (HOLP) was implemented in several studies in the closure of appendicular stump because of its lower cost and easy implementation. The purpose of this study to investigate the safety, usefulness, and cost effectiveness of HOLP for the closure appendecular stumps in LA. The study was carried out between December 2011 and December 2013. Patients with acute appendicitis were included in the study. Two groups were defined as patients with the HOLP and patients with endoloop. The prospectively collected data, including age, sex, body mass index, operative time, hospital stay, cost effectiveness, intraoperative, and postoperative complications were retrospectively analyzed. A total of 66 (35 male, 31 female) LA were performed. The endoloop group consisted of 30 patients (16 male, 14 female, and mean age, 30.4 +/- 1.8), while the HOLP group consisted of 36 patients (19 male, 17 female, and mean age, 28.6 +/- 1.6). The mean operative time was 42.5 +/- 1.3 in the HOLP group and 53.8 +/- 1.5 in the endoloop group (P < 0.0001). The mean hospital stay was 2.1 +/- 0.2 days in HOLP group and 2 +/- 0.2 in the endoloop group (P = 0.73). Both patient groups had no intraoperative complication, and no cases were converted to open procedure. Total hospital cost was 1170.8 +/- 6.3 dollars in the HOLP group and 1094 +/- 6.9 dollars in the endoloop group (P < 0.0001). The use of HOLP for the appendicular stumps in LA is a feasible, safe, and cost-effective procedure in patients with uncomplicated acute appendicitis