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Attitude of Health Personnel↗
Biomedical subjects
J R Ray
Publications and source records attributed to J R Ray.
Correct microcanonical ensemble in molecular dynamics.
The statistical-mechanics ensemble corresponding to equilibrium molecular dynamics simulations is different than the usual microcanonical EVN ensemble. Historically molecular dynamics has been associated with the EVNM ensemble, where M is the constant total linear momentum of the system. We show that the correct ensemble associated with molecular dynamics is the EVNMG ensemble where G is the constant of the motion associated with Galilean boosts. The ensemble associated with molecular dynamics simulations has, apparently, not been previously recognized. An earlier problem with the pressure in the new ensemble disappears.
Journal Article↗
Aspirin-sulfinpyrazone in prophylaxis of deep venous thrombosis in total hip replacement.
In postoperative hip arthroplasty patients, treatment with aspirin and sulfinpyrazone resulted in a statistically significant reduction of venographically diagnosed thrombi in the proximal veins of the leg. This reduction was most apparent in thrombi that involved the iliac vein. When compared with their placebo-treated counterparts, female patients who received the active treatment experienced a statistically significant 75% reduction of thrombosis, compared with a 32% reduction for men that was not statistically significant. There were no serious adverse effects. Factors were identified that may influence the result of drug prophylaxis trials in deep-vein thrombosis.
Adult↗