This paper discusses the increasing role of China and its rivalry with United States in global health governance. COVID-19 has presented new challenges domain health, marked by debate between unilateral multilateral approaches to dealing pandemic. US declining poses a threat spirit multilateralism prospects for When governance is on brink collapse, upholds approach lead collective action defeat...

in this paper effects of fractured sleepers on rail track vibration under moving wheelset have been investigated. two parallel rails of the track have been modeled as euler-bernoulli beams on elastic points as rail pads. also sleepers have been modeled as visco-elastic euler-bernoulli beams. it is assumed that, some sleepers under the rail track have been fractured and modeled by two beams. the...

A simplified model was employed to develop mathematically equations that describe the unsteadystate behavior of naturally fractured reservoirs, The analysis resulted in an equation of flow of radial symmetry whose solution, for the infinite case, is identical in form and function to that describing the unsteady-state behavior of homogeneous reservoirs. Accepting the assumed model, for all pract...

Pain following a fractured neck of femur can be severe; in addition patients often have underlying medical problems. This article examines the problems associated with good pain control for older patients following fractured neck of femur. It introduces a Changing Practice article, due to be published in next week's issue, which outlines the development of a nurse-led service to provide preoper...

Reservoir simulators remain essential tools for improved reservoir management in order to optimize hydraulic fracturing design in unconventional low permeability reservoirs. However, the commonly-used simulator requires too much computational efforts for the description of local phenomena in the vicinity of the hydraulic fractures, and is practically infeasible for field applications, due to la...

An elastic-plastic model was developed to describe the deformation and permeability of fractured rocks under confining pressure. Elastic and elastic-plastic contact models were used in the model to analyze the deformations of a representative element containing a single fracture under various confining pressures. The present work utilized elements from contact mechanics and viscous flows to der...

Objective: To observe the effects of repetitive brief ischemia on promoting bone healing in a rat tibia fracture model. Methods: To achieve the aim of the study, rats with right tibia closed fractured were administered homemade tourniquet placed on right thigh 10 min inflated/10 min deflated 3 times ischemia treatment at three interval time (24 hours, 48 hours, and 72 hours) for 5 consecutive w...