evidence occupies a paramount position in any logical endeavor and research article is consensually considered a predominant site of such an endeavor. one interesting area of rhetoric which addresses the source and reliability of evidence is quality metadiscourse. in this qualitative study, quality metadiscourse strategies (i.e., evidentials, hedges, boosters and disclaimers) are examined to in...

Introduction In hybrid rocket motors, one of the two propellants (oxidizer or fuel) is in liquid phase and the other is in solid phase. The combination of a solid fuel and a liquid oxidizer is the most common one, Fig. 1. 1 Even though the idea of hybrid rocket motor was conceived as early as 1937, it was only after 1960s they were built successfully with good combustion efficiency. A discussio...

Abstract mRNA vaccines have shown high efficacy in preventing severe COVID-19, but breakthrough infections, emerging variants and waning antibody levels warranted the use of boosters. Although boosters been widely implemented, extent to which pre-existing immunity influences remains unclear. In a cohort individuals primed with mRNA-1273 or BNT162b2 vaccines, we observed that lower spike-specifi...

• Numerical framework for wall-bounded flashing flow of cryogenic liquids proposed. Evaluation pressure- and density-based solvers with different thermodynamics closures. Introduction universal methodology suitable sub- supercritical conditions. Elucidation flow-expansion dynamics in regimes. DES capturing instabilities induced by transition from super- to subsonic flow. The two-phase liquid ox...

The decay of elementary particles is described nonrelativistically and using the method of the special theory of relativity. Then the Tsiolkovskii rocket equation is applied to the one photon decay of the excited nucleus of the Mössbauer effect. The formation time of photons during decay is supposed nonzero. The Meščerskii equation is possible to identify with the bremsstrahlung equation. All d...

Title of Document: FLOW AND ATOMIZATION CHARACTERISTICS OF CRYOGENIC FLUID FROM A COAXIAL ROCKET INJECTOR Vivek Gautam, Ph.D., 2007 Directed By: Professor, Ashwani K. Gupta, Department of Mechanical Engineering High thrust-to-weight ratio and consistent performance over a range of operating conditions make cryogenic rocket engines one of the best options for space propulsion. However, future sp...

background : brucellosis is a major bacterial zoonosis of global importance with the causative organisms of gram-negative facultative intracellular pathogens. the aims of this study were to standardize two immunoelectrophoretic techniques, rocket and cross immunoelectrophoresis, and compare their results with other conventional serodiagnostic tests. methods : sera from 15 sheep, without any his...