The ground state of a one-dimensional Hubbard model with a bond-charge attraction W term at half-filling is investigated by the density matrix renormalization group method. It is confirmed that the spin gap will be closed at U > 8W . But the long-range bond order wave survives even when the spin gap is closed. It indicates that the ground state is a novel dimerized spin fluid at U > 8W . By a c...

This experimental study reveals a counterflow slip at the interface of two immiscible fluids filling sealed vertical cylindrical container whose bottom disk rotates while other walls are stationary. An advanced particle image velocimetry helps us analyze and quantify streamline patterns velocity profiles steady axisymmetric flows both fluids. As angular increases, starting from zero, three chan...

Respiratory-induced changes in arterial blood pressure predict fluid responsiveness. However, the accuracy of these variables is affected by the preset tidal volume and by the early inspiratory increase in arterial blood pressure. We have therefore calculated the slope produced by the minimal systolic blood pressures (plotted against the respective airway pressures) during a ventilatory maneuve...

Two men, one 63 and one 52 years old, presented with ascites. Analysis of the ascitic fluid in both patients revealed a high protein content and an elevated serum-ascites gradient. Various studies showed the cause of the ascites to be constrictive pericardial disease. Total excision of their parietal pericardia relieved their symptoms, decreased their cardiac filling pressures, and increased th...

Background Chronic right ventricular (RV) pressure and volume overload in pulmonary arterial hypertension (PAH) results in leftward shift of the interventricular septum and impaired left ventricular (LV) diastolic function. However, the impact of PAH-mediated interdependency on LV fluid mechanics and fluid/structure interactions in LV diastolic dysfunction is incompletely understood. 4D flow CM...