Surface subsidence is common geologic hazard in coal mines when longwall mining method is applied.In this research, a Bonded Block Model (BBM) is selected to numerically simulate and analyze the surface subsidence of coal mines.Parametric study is conducted and key factors controlling the subsidence are characterized.BBM models with no bedding plan
Chickenpox is due to infection with the varicella zoster virus (VZV), a human alphaherpervirus found worldwide.Classically, the cinical disease is a febrile illness with a pruritic vesicular rash.Maternal chickenpox between 5 days before delivery to 2 days after delivery (perinatal varicella) can Acne Treatment cause severe and even fatal illness i
This paper aims to prove that during the transformation process in Poland of the sectors of general economic interests due to specific economic characteristics of those sectors and the fact that interests of three groups participating in the decision making in this process: government, management and employees turned out being non controversial pre