16 research outputs found
Multifaceted highly targeted sequential multidrug treatment of early ambulatory high-risk SARS-CoV-2 infection (COVID-19)
The SARS-CoV-2 virus spreading across the world has led to surges of COVID-19 illness, hospitalizations, and
death. The complex and multifaceted pathophysiology of life-threatening COVID-19 illness including viral mediated
organ damage, cytokine storm, and thrombosis warrants early interventions to address all components of the devastating
illness. In countries where therapeutic nihilism is prevalent, patients endure escalating symptoms and without
early treatment can succumb to delayed in-hospital
care and death. Prompt early initiation of sequenced multidrug
therapy (SMDT) is a widely and currently available
solution to stem the tide of hospitalizations and death. A
multipronged therapeutic approach includes 1) adjuvant
nutraceuticals, 2) combination intracellular anti-infective
therapy, 3) inhaled/oral corticosteroids, 4) antiplatelet
agents/anticoagulants, 5) supportive care including supplemental
oxygen, monitoring, and telemedicine. Randomized
trials of individual, novel oral therapies have not
delivered tools for physicians to combat the pandemic in
practice. No single therapeutic option thus far has been
entirely effective and therefore a combination is required
at this time. An urgent immediate pivot from single drug to
SMDT regimens should be employed as a critical strategy
to deal with the large numbers of acute COVID-19 patients
with the aim of reducing the intensity and duration
of symptoms and avoiding hospitalization and death
Clinicopathological difference in colorectal cancer in patients under and over forty years
Condition-based Maintenance Optimization Using Neural Network-based Health Condition Prediction
Arterial haemodynamic parameters derived from noninvasively recorded pulsewaves, using parameter estimation
An adaptive data-driven method for accurate prediction of remaining useful life of rolling bearings
Interaction of Reflected Shock Waves with Solid or Liquid Particulates
When performing shock-tube experiments with a gaseous mixture containing small particles, uncertainties can arise in the knowledge of the test conditions. Of particular importance is the accuracy of the test temperature when conducting chemistry and spectroscopic measurements behind the reflected shock wave. The primary uncertainty in an aerosol-laden flow field arises from the thermal and momentum (i.e., drag) relaxation of the particles, since a finite amount of time is required for the particles to achieve the temperature and speed of the shocked carrier gas. The net result is a transient relaxation zone leading to a final, equilibrium temperature and pressure of the gas/particle mixture that differ from the temperature and pressure if the particles were not present. The duration and magnitude of the effects depend on several factors, including the particle-to-gas mass loading ratio (η), the average particle diameter, the material properties of the condensed phase, and the shock speed. A one-dimensional model of the gas dynamics was compiled from models in the literature and used to estimate how the presence of the particles ultimately affects the uncertainty in reflected-shock test temperature over a range of temperatures from 1500 to 4000 K, η from 0 to 10, particle diameters from 0.1 to 100 μm, and two characteristic powders: silica and titania. When compared to a pure-gas shock wave at the same velocity, the equilibrium temperature in a gas/particle mixture is lower, the static pressure is higher, and the mixture specific heat ratio is lower. For example, a shock speed providing 3000 K, 1.0 atm behind the reflected shock wave in pure argon results in a temperature and pressure of 2735 K and 1.33 atm in a mixture of SiO2 and Ar at η = 0.10. The duration of the particle relaxation time can be several hundred microseconds or longer, depending on the particle size and loading. Even for η as low as 0.001, this relaxation time can be a significant fraction of the total test time since the test time is usually on the order of only a few milliseconds. In general, the relaxation zone introduces uncertainties in the equilibrium temperature as high as 10% for η0.10 and depends strongly on the material composition