A global hypoxia preconditioning model: neuroprotection against seizure-induced specific gravity changes (edema) and brain damage in rats

1999 ◽  
Vol 4 (3) ◽  
pp. 360-366 ◽  
Author(s):  
Mitchell R Emerson ◽  
Stanley R Nelson ◽  
Fred E Samson ◽  
Thomas L Pazdernik
Keyword(s):  
Specific Gravity ◽  
Brain Damage ◽  
Gravity Changes ◽  
Hypoxia Preconditioning

Specific Gravity Changes during the Development of the Sheep Fœtus

Nature ◽  
1962 ◽  
Vol 196 (4856) ◽  
pp. 788-789 ◽  
Author(s):  
S. K. STEPHENSON ◽  
J. ROBERTS
Keyword(s):  
Specific Gravity ◽  
Gravity Changes

Valence electron spectroscopy of inhomogeneous media

1992 ◽  
Vol 50 (2) ◽  
pp. 1150-1151
Author(s):  
A. Howie ◽  
D.W. McComb
Keyword(s):  
Specific Gravity ◽  
Loss Function ◽  
Electron Spectroscopy ◽  
Valence Electron ◽  
Peak Height ◽  
Loss Functions ◽  
Loss Peak ◽  
High Energies ◽  
Valence Electron Density ◽  
Electron Microscopist

The bulk loss function Im(-l/ε (ω)), a well established tool for the interpretation of valence loss spectra, is being progressively adapted to the wide variety of inhomogeneous samples of interest to the electron microscopist. Proportionality between n, the local valence electron density, and ε-1 (Sellmeyer's equation) has sometimes been assumed but may not be valid even in homogeneous samples. Figs. 1 and 2 show the experimentally measured bulk loss functions for three pure silicates of different specific gravity ρ - quartz (ρ = 2.66), coesite (ρ = 2.93) and a zeolite (ρ = 1.79). Clearly, despite the substantial differences in density, the shift of the prominent loss peak is very small and far less than that predicted by scaling e for quartz with Sellmeyer's equation or even the somewhat smaller shift given by the Clausius-Mossotti (CM) relation which assumes proportionality between n (or ρ in this case) and (ε - 1)/(ε + 2). Both theories overestimate the rise in the peak height for coesite and underestimate the increase at high energies.

Status epilepticus-induced brain damage and opercular syndrome in childhood

2000 ◽  
Vol 42 (6) ◽  
pp. 428-428 ◽  
Author(s):  
P Grattan-Smith ◽  
I Hopkins ◽  
L Shield ◽  
D Boldt
Keyword(s):  
Status Epilepticus ◽  
Brain Damage ◽  
Opercular Syndrome

Topographische Orientierung bei Patienten mit erworbener Hirnschädigung

1999 ◽  
Vol 10 (2) ◽  
pp. 77-86
Author(s):  
Martina Kindsmüller ◽  
Andrea Kaindl ◽  
Uwe Schuri ◽  
Alf Zimmer
Keyword(s):  
Brain Damage ◽  
Cognitive Deficits ◽  
Hospital Setting ◽  
Hospital Staff ◽  
Reading Test ◽  
Map Reading ◽  
Several Variables ◽  
Topographical Orientation ◽  
The One ◽  
Behavioral Memory

Topographical Orientation in Patients with Acquired Brain Damage Abstract: A study was conducted to investigate the abilities of topographical orientation in patients with acquired brain damage. The first study investigates the correlation between wayfinding in a hospital setting and various sensory and cognitive deficits as well as the predictability of navigating performance by specific tests, self-rating of orientation ability and rating by staff. The investigation included 35 neuropsychological patients as well as 9 control subjects. Several variables predicted the wayfinding performance reasonably well: memory tests like the one introduced by Muramoto and a subtest of the Rivermead Behavioral Memory Test, the Map Reading Test and the rating by hospital staff. Patients with hemianopia experienced significant difficulty in the task.

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