43 research outputs found
Perinatal hypoxic ischemic encephalopathy affects the proportion of GABA-immunoreactive neurons in the cerebral cortex of the rat
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Hypersurface-Invariant Approach to Cosmological Perturbations
Get PDFUsing Hamilton-Jacobi theory, we develop a formalism for solving
semi-classical cosmological perturbations which does not require an explicit
choice of time-hypersurface. The Hamilton-Jacobi equation for gravity
interacting with matter (either a scalar or dust field) is solved by making an
Ansatz which includes all terms quadratic in the spatial curvature.
Gravitational radiation and scalar perturbations are treated on an equal
footing. Our technique encompasses linear perturbation theory and it also
describes some mild nonlinear effects. As a concrete example of the method, we
compute the galaxy-galaxy correlation function as well as large-angle microwave
background fluctuations for power-law inflation, and we compare with recent
observations.Comment: 51 pages, Latex 2.09 ALBERTA THY/20-94, DAMTP R94/25 To appear in
Phys. Rev.
Vascularização arterial da região do nó sinoatrial em corações suínos: origem, distribuição e quantificação
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A new fractionator principle with varying sampling fractions: exemplified by estimation of synapse number using electron microscopy
No full textA simple and efficient alternative to implementing systematic random sampling in stereological designs without a motorized microscope stage
No full textEstimation of absolute number of alveolar epithelial type 2 cells in mouse lungs: a comparison between stereology and flow cytometry
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Evaluation of bone-to-implant contact and bone density adjacent to titanium implants using a stereological technique on ground sections
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