In this letter, we consider static black hole in f(R) gravity.We take advantage from corrected entropy and temperature and investigate such black hole. Finally, we study the $ P - V $ critically and phase transition of corrected black hole with respect to entropy and temperature. Here also, we obtain the heat capacity for the static black hole in $ f(R) $ gravity. This calculation help us...

The present work aims at reducing the friction of rubber soles sliding on ceramic floorings. Fitting bored cylindrical protrusions with different diameters on rubber soles was proposed. Experiments were carried out to evaluate the performance of the proposed protrusions in increasing friction coefficient at dry and contaminated floorings. It was found that, at dry sliding, friction coefficient ...

many experimental studies have been conducted on development of the scour hole as a result of vertical jet impaction. research has shown that aeration of the nappe flow in the model is much weaker than that in the prototype. therefore, the influence of aeration on scour holes needs further study. experimental investigation of the effects of air entrainment and tail water depth on the scour hole...

We report integral-field spectroscopic observations with the Cambridge Infra-Red Panoramic Survey Spectrograph (CIRPASS) mounted on the GEMINI South telescope of the nucleus of the nearby galaxy NGC 5128 (Centaurus A). We detect two-dimensional distributions of the following emission-lines: [PII], [FeII] and Paschen β. We compare our observations with previously published radio observations (VL...

chronic subdural hematoma (csdh) is a curable entity frequently encountered by neurosurgeons. the present study was conducted to explore expert opinion and common practice in iran. besides, a review of randomized clinical trials in literature was performed. a questionnaire including six questions discussing major aspects of practice on csdh, with multiple choices was designed. a pilot study was...

in this paper, we calculate electron and hole impactionization coefficients in in0.52al0.48as using a monte carlo modelwhich has two valleys and two bands for electrons and holesrespectively. also, we calculate multiplication factor for electronand hole initiated multiplication regimes and breakdown voltagein in0.52al0.48as pin avalanche photodiodes. to validate themodel, we compare our simulat...

We estimate the canonical entropy of a quantum black hole by counting its quasi-normal modes. first show that partition function classical hole, evaluated modes with thermodynamic Boltzmann weight, leads to small order unity due contribution from higher angular then discuss how this will be modified when taking into account dissipation effects near horizon interaction microstates. The structure...

ABSTRACT We study the Fourier time lags due to Comptonization of disc-emitted photons in a spherical, uniform, and stationary X-ray corona, which located on rotational axis black hole. use monk, general relativistic Monte Carlo radiative transfer code, calculate Compton scattering emitted by thin disc with Novikov–Thorne temperature profile. find that model remain constant up characteristic fre...

We discuss the interconnection between Schwinger pair creation in electric field, Hawking radiation and particle Unruh effect. All three processes can be described terms of entropy temperature. These thermodynamic like combined. consider combined process charged electrically neutral particles which combines effects. also black white holes effect hole entropy. The obey sum rules for inverse Some...