Now showing items 21-30 of 331
Blood pressure, renin activity and heart rate changes during propranolol therapy of hypertension
(Elsevier, 1977-07)
To investigate the importance of plasma renin activity in determining the antihypertensive action of propranolol and of heart rate in guiding propranolol therapy, the effect of a graded oral dose of propranolol on blood ...
Effect of changes in plasma levels of free fatty acids on plasma glucagon, insulin, and growth hormone in man,
(Elsevier, 1977-09)
A regulatory role of acute changes in plasma concentration of free fatty acids on glucagon secretion has been suggested. We have studied the effect of such changes on plasma levels of glucagon, insulin, and growth hormone ...
Functional significance of biological variability
(Elsevier, 1977)
The variability of biological matter contributes to both its adaptability and reliability. To represent the structure of this variability we treat a complete biological system (e.g. community and environment) as a system ...
Principle of superposition-free memory
(Elsevier, 1977-07-21)
The requirement that memory be superposition-free imposes a restrictive condition on the structure of neural models. A simple model which satisfies this condition consists of two levels of neurons, with primary level neurons ...
In vitro inhibition of lymphoproliferative responses to tumor associated antigens and of lymphoma cell proliferation by rat splenic macrophages
(Elsevier, 1977-02)
Spleens from W/Fu rats bearing a syngeneic progressively growing (C58NT)D tumor contain cells which can inhibit lymphoproliferative responses in a mixed lymphocyte-tumor interaction designed to demonstrate suppressor ...
Vitamin D-Deficiency Rickets in Two Breast-Fed Infants Who Were Not Receiving Vitamin D Supplementation
(Sage Publications, 1977)
Ecchymosis of the lower leg
(John Wiley & Sons, Inc., 1977-05)
Four patients with hemarthrosis of the knee, synovial rupture, and ecchymoses are reported. The patients presented with calf pain and swelling and large ecchymoses, which eventually extended to the ankle as a crescent about ...
The role of the optic tectum in various visually mediated behaviors of goldfish
(Elsevier, 1977-06-17)
Five visually mediated behaviors were assessed following ablation of one or both lobes of the optic tectum in goldfish. Three of the behaviors disappeared following tectal ablations; optomotor response (swimming with the ...
Photochemical particulate formation in cyclohexene-nitrogen dioxide-air mixtures
(Elsevier, 1977)
Experiments were performed investigating the formation of condensation nuclei (particles smaller than 0.1 [mu]m) and light scattering particles (particles larger than 0.3 [mu]m) in cyclohexene-nitrogen dioxide-air mixtures ...