4 research outputs found

    Electronic band structure, optical, dynamical and thermodynamic properties of cesium chloride (CsCl) from first-principles

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    The geometric structural optimization, electronic band structure, total density of states for valence electrons, density of states for phonons, optical, dynamical, and thermodynamical features of cesium chloride have been investigated by linearized augmented plane wave method using the density functional theory under the generalized gradient approximation. Ground state properties of cesium chloride are studied. The calculated ground state properties are consistent with experimental results. Calculated band structure indicates that the cesium chloride structure has an indirect band gap value of 5.46 eV and is an insulator. From the obtained phonon spectra, the cesium chloride structure is dynamically stable along the various directions in the Brillouin zone. Temperature dependent thermodynamic properties are studied using the harmonic approximation model

    Electronic band structure, optical, dynamical and thermodynamic properties of cesium chloride (CsCl) from first-principles

    No full text
    The geometric structural optimization, electronic band structure, total density of states for valence electrons, density of states for phonons, optical, dynamical, and thermodynamical features of cesium chloride have been investigated by linearized augmented plane wave method using the density functional theory under the generalized gradient approximation. Ground state properties of cesium chloride are studied. The calculated ground state properties are consistent with experimental results. Calculated band structure indicates that the cesium chloride structure has an indirect band gap value of 5.46 eV and is an insulator. From the obtained phonon spectra, the cesium chloride structure is dynamically stable along the various directions in the Brillouin zone. Temperature dependent thermodynamic properties are studied using the harmonic approximation model

    The Effect of Epinephrine Administration on Return of Spontaneous Circulation and One-Month Mortality with Cardiopulmonary Arrest Patients

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    Objective: The objective of this study is to determine the effect of epinephrine administration on the return of spontaneous circulation (ROSC) and one-month mortality in patients with cardiopulmonary arrest. Methods: We conducted this study between August 1, 2016 and May 31, 2017. Importantly, we included the witnessed cases (>= 18 years) of in-emergency department cardiopulmonary arrest (IEDCA) and out-of-hospital cardiopulmonary arrest (OHCA) in the study. We divided the patients into two groups: the adrenaline group (Group 1) and the non-adrenaline group (Group 2). Thereafter, we investigated ROSC and one-month mortality in them. Results: We included 183 patients (50.3% of males and 49.7% of females with a mean age of 64.2 +/- 16.8 years) in the study. The percentages of IEDCA and OHCA cases were 25.1% and 74.9%, respectively. Epinephrine was administered to 100 (54.6%) patients (Group 1). Among these patients, 15.9% (n=29) of the patients had shockable rhythms (ventricular fibrillation, pulseless ventricular tachycardia) and 84.1% (n=154) of them had non-shockable rhythms (asystole, pulseless electrical activity) as the initial rhythm. ROSC and one-month mortality rate of these patients were 24% (n=44) and 72.8% (n=36), respectively. The one-month mortality rates of Group 1 (30% of patients had IEDCA and 70% of patients had OHCA) and Group 2 were 43.8% and 56.2%, respectively (p=0.0231). The ROSC and one-month mortality rates of Group 1 and Group 2 cases, whose initial rhythm was a shockable rhythm, were 26.6% and 50% vs. 42.8% and 66.6%, respectively
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