Now showing items 31-40 of 75
On averting the tragedy of the commons
(Springer-Verlag; Springer-Verlag New York Inc., 1988-05)
One of the enduring facts of the human condition is that the earth's resources are finite and its environment fragile. It is also evident that human behavior is rarely based on an appreciation of these facts. While the ...
Iterative RF pulse design for multidimensional, small-tip-angle selective excitation
(Wiley Subscription Services, Inc., A Wiley Company, 2005-10)
The excitation k -space perspective on small-tip-angle selective excitation has facilitated RF pulse designs in a range of MR applications. In this paper, k -space-based design of multidimensional RF pulses is formulated ...
Clinicopathologic features of Chandler's syndrome
(Elsevier, 1983)
The clinicopathologic features of Chandler's syndrome are elucidated based on a study of nine patients. Keratoplasty, trabeculectomy and/or iris specimens were studied by light, electron and, in six cases, specular microscopy. ...
Lateral spread of light adaptation in the rat retina
(Elsevier, 1977)
Recordings from the rat optic tract fibers were used to assess changes in sensitivity under various conditions of adaptation. An adapting background which excites only a small fraction of the rods can yet cause a several-fold ...
Detecting low-frequency functional connectivity in fMRI using a self-organizing map (SOM) algorithm
(Wiley Subscription Services, Inc., A Wiley Company, 2003-12)
Low-frequency oscillations (<0.08 Hz) have been detected in functional MRI studies, and appear to be synchronized between functionally related areas. A current challenge is to detect these patterns without using an external ...
Periodic fluctuations in synaptic transmission and enhancement of transmission in hippocampal slices
(Elsevier, 1982-01-14)
The properties of the synchronously activated radiatum fiber-CA1 synaptic population were examined with the in vitro hippocampal slice preparation. Periodic fluctuations in synaptic transmission and in the enhancement of ...
Ultra high-speed transaxial image reconstruction of the heart, lungs, and circulation via numerical approximation methods and optimized processor architecture
(Elsevier, 1979-02)
A high temporal resolution scanning multiaxial tomography unit, the Dynamic Spatial Reconstructor (DSR), presently under development will be capable of recording multiangular X-ray projection data of sufficient axial range ...
Lack of correspondence between the room-temperature phosphorescence decay-components and Trp residues in a series of Trp-->Cys or Trp-->Phemutants of human carbonic anhydrase II
(Elsevier, 1994-10-17)
The room temperature phosphorescence of native human carbonic anhydrase (CA), and several mutants of this enzyme has been investigated. In these mutants the seven tryptophan residues in the native protein have sequentially ...
A quantitative study of electrical stimulation of central myelinated fibers
(Elsevier, 1969-06)
Quantitative extracellular electrical stimulation data were obtained from single fibers in the dorsal columns of anesthetized and paralyzed cats. Single-fiber responses were recorded with glass microelectrodes. The threshold ...
Rod saturation in b-wave of the rat electroretinogram under two different anesthetics
(Elsevier, 1984)
B-wave increment threshold experiments in the rat show that "rod saturation" occurs at different background levels with different anesthetics. Rod saturation builds up over the first 60 sec of light adaptation in pentobarbital ...