1. Intravenous infusions of lipid-free albumin were used to lower the arterial non-esterified fatty acids (NEFA)/albumin ratio during coronary occlusion in dogs. 2. Reduction of the NEFA/albumin ratio was accompanied by proportionate reductions in myocardical uptake of NEFA and the degree of ST segment elevation in epicardial electrocardiographic recordings from the ischaemic zone. Aortic press...

PURPOSE To consider the effect of chronic arterial hypertension on the susceptibility of the retina to acute IOP challenge. METHODS Anesthetized adult Long-Evans rats with normal (n = 5, receiving saline subcutaneously), chronic high blood pressure (BP) for 4 weeks (n = 15, Angiotensin II subcutaneously), and acute high BP for 1 hour (n = 10, Angiotensin II intravenously) underwent IOP elevat...

Background T2-weighted edema imaging identifies the ischemic area at risk during acute myocardial infarction. Myocardial salvage occurs in the area at risk without late gadolinium enhancement (LGE). The degree of myocardial salvage is prognostically important, but its effect on recovery of left ventricular (LV) function is not known. The purpose of this study was to determine if the degree of m...

It is frequently assumed that the accuracy with which luminance gratings can be detected depends solely on the signal-to-noise ratio at the output of a single linear channel. Proportionality between threshold elevation and power spectral density is implicit in this assumption. I demonstrate that this proportionality does not hold for 1-cycle/degree gratings masked by low-pass noise with a 0.5-c...

Eighty-two patients with variant angina underwent a treadmill exercise test using 14 ECG leads, and 67 also underwent exercise thallium-201 scans. The test induced ST elevation in 25 patients (30%), ST depression in 21 (26%) and no ST-segment abnormality in 36 (44%). ST elevation during exercise occurred in the same ECG leads as during spontaneous attacks at rest, and was always associated with...

Recurring to some excellent geometric and algebraic properties of Poisson curves, we present an algorithm that generates a developable Poisson surface through a Poisson curve of arbitrary degree. The technique is based on necessary and sufficient conditions for a developable surface, degree elevation formula of a Poisson curve and linear independence of Poisson basis. Some common transcendental...

The objective of this study was to characterize the temporal and altitudinal variation in microclimate of high elevation spruce–fir (Picea rubens–Abies balsamea) forests in three major mountain ranges of the northeastern United States. Mean lapse rates of air temperature were comparable to those previously reported for this region, but lapse rates varied considerably in relation to diurnal (and...

In this paper, we use the blending functions of Lupaş type (rational) (p, q)-Bernstein operators based on (p, q)-integers for construction of Lupaş (p, q)-Bézier curves (rational curves) and surfaces (rational surfaces) with shape parameters. We study the nature of degree elevation and degree reduction for Lupaş (p, q)-Bézier Bernstein functions. Parametric curves are represented using Lupaş (p...