Island in Quark Cloud Model

We compute the entanglement entropy of Hawking radiation in a bath attached to a deformed eternal AdS black hole dual to field theories where each theory is backreacted by the presence of a uniform static distribution of heavy fundamental quarks. The entanglement entropy of the Hawking radiation increases linearly with time until an island emerges after the Page time, at that point the entanglement entropy saturates to a constant value twice the Bekenstein-Hawking entropy of the deformed black hole resulting in the Page curve. Furthermore, we study the effects of the backreaction on the Page curve and observe that introducing deformation delays the appearance of island and shifts the Page curve to a later time.Comment: 19 pages, 5 figure

STUDY OF ANTIFUNGAL POTENTIAL OF AEGLE MARMELOS: A MEDICINAL PLANT

ABSTRACT: In the present research work methanolic, ethanolic and aqueous extract of leaf, fruit and stem of Aegle marmelos were screened for its potential against four fungal strains : Candida albicans, Penicillium chrysogenum, A. niger and Fusarium solani using agar well diffusion assay. The length of inhibition zone was measured in millimeters. The results were refrenced against Glucanazole antifungal agent. Methanolic fruit extract showed strong antifungal activity against most of the strains where as moderate antifungal potential was shown by leaf extract in aqueous solution

Complex hydrocephalus (combination of communicating and obstructive type): an important cause of failed endoscopic third ventriculostomy

<p>Abstract</p> <p>Background</p> <p>Hydrocephalus can be classified as purely obstructive, purely communicating or due to combinations of pathologies (obstruction in addition to defective absorption). Endoscopic third ventriculostomy (ETV) as an alternative to shunt procedures is an established treatment for obstructive hydrocephalus. However, patients who have combination of pathologies (complex hydrocephalus) could result in failure of ETV in spite of a patent stoma. The aim of this study was to prospectively evaluate the incidence of complex hydrocephalus in patients with obstructive hydrocephalus who failed an endoscopic third ventriculostomy.</p> <p>Findings</p> <p>Seventy one patients of obstructive hydrocephalus who underwent ETV in our institution were included in this study. Aetiology of hydrocephalus included congenital aqueductal stenosis in 42 and tubercular meningitis (TBM) in 29 patients. Failure of ETV was seen in 15 (21%) patients. These 15 patients included 6 (14.3%) from the congenital group and 9 (31.0%) patients from the TBM group. Iohexol CT ventriculography confirmed a patent stoma (suggesting a complex hydrocephalus) in 10 (66.7%) out of the 15 failed ETV cases. The incidence of complex hydrocephalus was more common in TBM group (8/29 patients, 27.60%) compared to congenital group (2/42 patients, 4.8%). The complex hydrocephalus patients with a patent ETV stoma were successfully managed by a lumbar peritoneal (LP) shunt.</p> <p>Conclusion</p> <p>Ten out of the 71 patients (14%) with obstructive hydrocephalus who underwent an ETV had a complex hydrocephalus, which was the major (66.7%) cause for failure of ETV. Improving methods to detect the exact type of hydrocephalus pre-operatively could increase success rate of ETV and avoid an unnecessary operative procedure (ETV).</p

Photovoltaic quantum well infrared photodetectors

Quantum well infrared photodetectors (QWIP) are a promising new approach to long-wavelength infrared detector arrays. Both single-well photovoltaic and multiple-well photoconductive devices have been demonstrated. The author discusses noise considerations as they apply to photovoltaic devices, grating coupling of the infrared light into QWIPs, and recently demonstrated electrically tunable detectors. The use of light trapping to enhance the quantum efficiency and reduce cross-talk in an array is addressed

Russia Ukraine War - the Current Scenario

Ukrainian negotiators at talks with Russian officials demanded a ceasefire and humanitarian corridors to evacuate besieged citizens as Moscow’s invasion forces surrounded and bombarded Ukrainian cities. Earlier, Russia’s Foreign Minister Sergey Lavrov had said that Moscow is ready for talks to end the fighting in Ukraine but will continue to press its effort to destroy Ukraine’s military infrastructure. Ukraine’s state emergencies agency said that at least 22 civilians have been killed in a Russian strike on a residential area in the city of Chernihiv, a city of 280,000 in Ukraine’s north. It said the casualties could be higher as rescuers are continuing to look through debris for more bodies. The development comes even as talks between Russia and Ukraine were underway in Belarus. In other news, Major General Andrei Sukhovetsky, the commanding general of the Russian 7th Airborne Division, was killed in fighting in Ukraine earlier this week, news agency AP reported. His death was confirmed by a local officers’ organization in the Krasnodar region in southern Russia. The circumstances of his death were not immediately clear. Meanwhile, the International Criminal Court prosecutor has launched an investigation that could target senior officials believed responsible for war crimes, crimes against humanity or genocide amid a rising civilian death toll and widespread destruction of property during Russia’s invasion of Ukraine. ICC Prosecutor Karim Khan announced the probe after dozens of the court’s member states asked him to take action. After informing the court’s judges of his decision to open an investigation that covers all sides in the conflict, Khan said, “Our work in the collection of evidence has now commenced.

Visual Outcomes after Phacoemulsification with AcrySof Toric Intraocular Lens Implantation

Introduction: To study the visual outcome of AcrySof toric intraocular lens (IOL) implantation in patients having cataract associated with astigmatism. Materials and Methods: In this prospective interventional case series, 30 eyes of 28 patients with preoperative astigmatism of 1.5–4.5D cylinder underwent phacoemulsification with AcrySof toric IOL implantation. All patients were assessed on day 1, 1 week, 1 month, 2 months, and 3 months postoperatively. The outcome measures were uncorrected visual acuity (UCVA), refractive cylinder, and degree of IOL rotation. Results: Mean UCVA improved significantly in study eyes (P &lt; 0.05) at 3 months. The mean refractive astigmatism reduced from the preoperative value 3.05 ± 0.06 D to 0.208 ± 0.058 D (P=0.001). The mean axis of rotation was 2.76 ± 1.88° in all eyes. Ninety percent of all eyes had mean axis of IOL rotation 10°. Only three eyes had mean axis of rotation 10° or more. Conclusion: AcrySof toric IOL implantation is an effective method to correct preoperative astigmatism in cataract patients.Keywords: Acrysof toric IOL, astigmatism, toric IOL, visual outcom

A comparative study of experimental and theoretical results of conformations of oxovanadium(IV) complexes with 4-acyl pyrazolone ligands using DFT method

The optimized structures and electronic properties of the oxovanadium(IV) complexes containing 4-acyl pyrazolone ligands were calculated using density functional theory. The total energies of both the complexes were calculated e.g. syn and anti conformation of complex 1 and complex 2 with and without solvent. The calculated total energy for syn conformation was -10.162 keV, while total energy for anti conformation was -10.155 keV. Similarly, the calculated total energy for complex 2 with solvent was obtained -10.793 keV, while total energy for complex 2 without solvent was -10.158 keV. The total energy calculation shows that syn conformation is more stable in complex 1, while complex 2 is more stable in twisted geometry with solvent. In order to investigate the electronic properties of ligands and complexes, quantum chemical parameters, such as the highest occupied molecular orbital energy (HOMO), the lowest unoccupied molecular orbital energy (LUMO), and energy gap were calculated. The theoretically calculated data of the complexes are in good agreement with the data obtained by the single-crystal X-ray diffraction analysis. © 2014 Elsevier B.V. All rights reserved

Crystal structure of (4Z)-1-(3,4-dichlorophenyl)-4-[hydroxy(4-methylphenyl)methylidene]-3-methyl-4,5-dihydro-1H-pyrazol-5-one

The title compound, C18H14Cl2N2O2, crystallizes with two molecules, A and B, in the asymmetric unit. In molecule A, the dihedral angles between the central pyrazole ring and pendant dichlorobenzene and p-tolyl rings are 2.18 (16) and 46.78 (16)°, respectively. In molecule B, the equivalent angles are 27.45 (16) and 40.45 (18)°, respectively. Each molecule features an intramolecular O—H...O hydrogen bond, which closes an S(6) ring and molecule A also features a C—H...O interaction. In the crystal, weak C—H...π interactions and aromatic π–π stacking [shortest centroid–centroid separation = 3.707 (2) Å] generate a three-dimensional network