In large-scale high-speed rail networks (HSRNs), the occurrence of occasional malfunctions or accidents is unavoidable.The key issue considered in this study is the optimal allocation of the maintenance costs, based on the stochastic risk assessment for HSRNs.Inspired by the theoretical risk evaluation methods in the complex network, three Framed H
After being a matter of hot debate for years, the presence of lipid membranes in the last common ancestor of extant organisms (i.e., the cenancestor) now begins to be generally accepted.By contrast, cenancestral cell walls have attracted less attention, probably owing to the large diversity of cell walls that exist in the three domains of life.Many
Abstract Background Highly Active Antiretroviral Therapy (HAART) has been available free of charge in Tanga, Tanzania since 2005.However we have found that a high percentage of women referred from prevention of mother-to-child transmission services to the Care and Treatment Clinics (CTC) for HAART never registered at the CTCs.Few studies have focus
Conducting mineral extraction activities usually BLOOMERS requires obtaining a set of permits for each of the activities planned to be undertaken.This directly concerns water management and discharges associated with any mineral extraction operations.In response to the growing demand for energy resources worldwide, the industry demand for permits r