The novel member of coronaviruses family, severe acute respiratory coronavirus-2 (SARS-CoV-2), with high structural homology to SARS-CoV and Middle East respiratory syndrome-related coronavirus (MERS) has spread rapidly with about 20 million cases infection and over 700,000 deaths. SARS-CoV-2 has been emerged as a worldwide disaster due to non-specific few respiratory and gastrointestinal manifestations at the onset of disease as well as long incubation period. Surprisingly, not only respiratory failure but also the underlying coagulation disorder and neurovascular involvement worsen the clinical outcome of infected patients. In this review article, we describe the probable mechanisms of SARS-CoV-2 infection and stroke occurrence. We will also discuss the cerebrovascular events following SARS-CoV-2 infection, the recommended therapies, and future prospects to better manage these patients in coronavirus disease 2019 (COVID-19) outbreak.
The thermal conductivity of nanofluids depends on various parameters, such as concentration, temperature, particle size, pH, shape, material, and possibly on the manufacturing process of the nanoparticles. Data on the viscosity of nanofluids, available in the literature, are very limited. Theoretical models for the determination of the thermal conductivity and viscosity of nanofluids have been pursued. Experiments with nanofluids indicate that they higher heat transfer coefficients than the base fluid. No significant increase in a pressure drop is reported with nanofluids, compared with values with the base fluid. However, the stability of nanofluids with regard to settlement/agglomeration, especially at higher concentrations, is still a problem for practical applications.
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