NOCTURNAL HEART RATE AND CARDIAC REPOLARIZATION IN LOWLANDERS WITH CHRONIC OBSTRUCTIVE PULMONARY DISEASE AT HIGH ALTITUDE: DATA FROM A RANDOMIZED, PLACEBO-CONTROLLED TRIAL OF NOCTURNAL OXYGEN THERAPY

Background: Chronic obstructive pulmonary disease (COPD) is associated with cardiovascular disease.We investigated whether michael harris sunglasses sleeping at altitude increases nocturnal heart rate (HR) and other markers of cardiovascular risk or arrhythmias in lowlanders with COPD and whether this can be prevented by nocturnal oxygen therapy (N

For curved shield tunnels in composite strata, the excavation face may undergo sliding failure due to the interface effect of soil layers, the over-excavation of shield cutterhead, and the asymmetrical thrust of jacks.Inspired by the silo theory, this paper establishes the calculation model and formula for the ultimate support pressure in the excav

The deployment of 5G has exposed capacity constraints in realizing the key vision of the Internet of Everything (IoE).Therefore, the researchers are exploring potentials of Digital Twin Network (DTN) in wireless networks.DTN is a novel technology to create virtual replicas of physical environment for testing, optimizing, and managing wireless netwo

Designing nonlinear optimal controllers such as Minimum Variance Controller (MVC) has many difficulties.Main difficulties are 1) in order to design controller; the explicit relations between outputs and gator mini bone inputs must be executable.This relation is defined implicitly in the nonlinear models; 2) learning controller is high dimensional-m