State-to-state study of non-equilibrium recombination of oxygen and nitrogen molecules.

Rapidly cooled mixtures are of interest for several applications, including hypersonic flows due to the presence of strong cooling temperature gradients in regions such as hypersonic boundary layers and expanding nozzles. There have been very few studies of rapidly cooled mixtures using the high-fidelity rovibrational databases afforded by ab initio potential energy surfaces. This work makes use of existing rovibrational state-specific databases to study rapidly cooled mixtures.

State-to-State Master Equation and Direct Molecular Simulation Study of Energy Transfer and Dissociation for the N-N System.

We present a detailed comparison of two high-fidelity approaches for simulating non-equilibrium chemical processes in gases: the state-to-state master equation (StS-ME) and the direct molecular simulation (DMS) methods. The former is a deterministic method, which relies on the pre-computed kinetic database for the N-N system based on the NASA Ames potential energy surface (PES) to describe the evolution of the molecules' internal energy states through a system of master equations. The latter is a stochastic interpretation of molecular dynamics relying exclusively on the same PES.

Optimal strategy for administering enoxaparin to patients undergoing coronary angiography without angioplasty for acute coronary syndromes.

The optimal strategy for administration of low molecular weight heparin in patients with acute coronary syndrome (ACS) undergoing coronary angiography without percutaneous coronary intervention remains unclear. We studied postangiographic vascular complications in 325 consecutive patients (210 men and 115 women, mean age 63 years) with ACS undergoing diagnostic coronary angiography via a femoral approach followed by immediate sheath removal. At the time of angiography, 44 patients were on intravenous unfractionated heparin (UFH), 229 on subcutaneous enoxaparin, and 52 on no heparin.