“A Twenty-Hour-a-Day Job”

Twenty-four-hour hemodynamic profile during treatment of essential hypertension by once-a-day nadolol.

The effect of nadolol (N) on 24-hour blood pressure (BP) and heart rate (HR) values and on their variability was examined in ambulant patients with essential hypertension, using the Oxford method to obtain continuous intraarterial recording and a computer to have a beat-to-beat analysis of the data. The recording was carried out without treatment and after 10 days' administration of N once dail...

Twenty-four hour gastric acidity after vagotomy.

Twenty-four hour intragastric pH during normal daily activity has been studied by nasogastric intubation and aspiration of gastric samples in seven patients four years after vagotomy (four truncal, three selective). Two of these patients also had pre- and early postoperative studies. Mean pH was inversely correlated with basal, insulin- and pentagastrin-stimulated acid outputs. However, one of ...

Twenty-four hour simulation of solar chimneys

A model for time dependent analysis of solar chimneys is presented. The energy balance equations for three components of solar chimneys, absorbing plate, cover glass and air-gap are discretized with respect to time using an implicit finite difference model. The discretized nonlinear energy balance equations are solved for numerous time steps over a 24-h period using the Newton–Raphson method. T...

Twenty-four hour efficacy of glaucoma medications.

Current medical therapy of glaucoma aims to attain a meaningful and consistent reduction of intraocular pressure (IOP) to a predetermined level of target IOP, which will commensurate with either stability, or delayed progression of visual loss. Glaucoma is a 24-h disease and the damaging effect of elevated IOP is continuous. Therefore, it is reasonable that we should endeavor to identify the tr...

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