Generalized Superconductors and Holographic Optics

We study generalized holographic s-wave superconductors in four dimensional R-charged black hole and Lifshitz black hole backgrounds, in the probe limit. We first establish the superconducting nature of the boundary theories, and then study their optical properties. Numerical analysis indicates that a negative Depine-Lakhtakia index may appear at low frequencies in the theory dual to the R-charged black hole, for certain temperature ranges, for specific values of the charge parameter. The corresponding cut-off values for these are numerically established in several cases. Such effects are seen to be absent in the Lifshitz background where this index is always positive.Comment: 1 + 22 Pages, LaTeX, 18 .eps figures. Discussions expanded and results on Lifshitz backgrounds added. Published versio

Imprint of black hole area quantization and Hawking radiation on inspiraling binary

We study the potential of gravitational wave astronomy to observe the quantum aspects of black holes. According to Bekenstein's quantization, we find that black hole area discretization can have observable imprints on the gravitational wave signal from an inspiraling binary black hole. We study the impact of quantization on tidal heating. We model the absorption lines and compute gravitational wave flux due to tidal heating in such a case. By including the quantization we find the dephasing of the gravitational wave, to our knowledge it has never been done before. We discuss the observability of the phenomena in different parameter ranges of the binary. We show that in the inspiral, it leads to vanishing tidal heating for the high spin values. Therefore measuring non-zero tidal heating can rule out area quantization. We also argue that if area quantization is present in nature then our current modeling with reflectivity can possibly probe the Hawking radiation which may bring important information regarding the quantum nature of gravity

Study the efficacy of platelet rich plasma and local corticosteroid injection for treatment of chronic plantar fasciitis

Background: Plantar fasciitis is one of the most common causes of heel pain. Various methods of treatment are available but no ideal treatment has been defined in literature. Corticosteroid (CS) injections are being used as a gold standard but studies have shown its short-term effects and various complications. Recently, platelet rich plasma (PRP) has been advocated as a newer treatment option. The main aim and objective of this study is to compare the two modalities of treatment regarding both pain and functional scores and their complications.Methods: This study was a prospective cohort study. Total 90 patients with chronic plantar fasciitis visiting orthopaedic outpatient department of Assam Medical College and Hospital, Dibrugarh from July 2018 to June 2019 were enrolled for the study after clearance from Institutional Ethics Committee and equally divided into two groups. Group A received PRP and Group B received CS injections. They were assessed with visual analogue scale (VAS) and foot and ankle ability measure (FAAM) score at day 0, at 1 month, 3 months and 6 months. Level of significance was set at p<0.05.Results: The score on VAS and FAAM improved from baseline for both the groups. CS showed better results at 1 month and 3 months but at 6 months, results of PRP were better. 3 patients had recurrences in CS group.Conclusions: Corticosteroid injections provide immediate and short-term relief but PRP is beneficial with long term effects and without any complications

A Comparison of Vertical Jump Performance between Mesomorphic and Ectomorphic Dominant Somatotypes

Introduction: Vertical jump performance is an important measure of leg power and explosiveness in sports. Somatotype, referring to body shape and composition. It may relate to vertical jump capacity. This study aimed to compare vertical jump, peak anaerobic power, and relative anaerobic capabilities between ectomorphic-mesomorph and mesomorphic-ectomorph somatotypes among sedentary male students. Methods: A total number of 26 students participated in this study. Participants underwent anthropometric assessments to determine Heath-Carter somatotype ratings. Additionally, countermovement jumps were performed to evaluate vertical jump height, estimate peak anaerobic power via the Sayers equation, and calculate a power-to-body mass ratio. Results: No statistically significant differences were found between ectomorphic-mesomorphs (n=15) and mesomorphic-ectomorphs (n=11) for vertical jump (54.47 ± 8.33 cm vs 57.09 ± 6.28 cm, p = 0.25), peak anaerobic power (3576 ± 542.01 W vs 3473.47 ± 538.71 W, p = 0.64), or power-to-body mass ratio (69.97 ± 10.51 W/kg vs 65.10 ± 7.46 W/kg, p = 0.18). Conclusion: While this initial study suggested no substantial performance differences based on somatotype, further research with increased statistical power through larger sample sizes is necessary to conclusively determine relationships between physique and anaerobic capacities in the general population. Matching and tracking athletes over sports training may also clarify advantages conferred by morphology alone.Introducción: El rendimiento del salto vertical es una medida importante de la potencia de las piernas y la explosividad en los deportes. El somatotipo, que se refiere a la forma y composición del cuerpo, puede estar relacionado con la capacidad de salto vertical. Este estudio tuvo como objetivo comparar el salto vertical, la potencia anaeróbica máxima y las capacidades anaeróbicas relativas entre los somatotipos ectomorfo-mesomorfo y mesomórfico-ectomorfo entre estudiantes varones sedentarios. Métodos: En este estudio participaron un total de 26 estudiantes. Los participantes se sometieron a evaluaciones antropométricas para determinar las calificaciones de somatotipo de Heath-Carter. Además, se realizaron saltos con contramovimiento para evaluar la altura del salto vertical, estimar la potencia anaeróbica máxima mediante la ecuación de Sayers y calcular la relación potencia-masa corporal. Resultados: No se encontraron diferencias estadísticamente significativas entre ectomorfos-mesomorfos (n=15) y mesomorfos-ectomorfos (n=11) para salto vertical (54,47 ± 8,33 cm vs 57,09 ± 6,28 cm, p = 0,25), potencia anaeróbica máxima (3576 ± 542,01 W vs 3473,47 ± 538,71 W, p = 0,64), o relación potencia-masa corporal (69,97 ± 10,51 W/kg vs 65,10 ± 7,46 W/kg, p = 0,18). Conclusión: Si bien este estudio inicial no sugirió diferencias sustanciales en el rendimiento según el somatotipo, se necesitan más investigaciones con mayor poder estadístico a través de tamaños de muestra más grandes para determinar de manera concluyente las relaciones entre el físico y las capacidades anaeróbicas en la población general. Emparejar y seguir a los atletas durante el entrenamiento deportivo también puede aclarar las ventajas conferidas únicamente por la morfología