Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 78 for “"laminae"”.
-
Interlaminar Interactions in the Cat Visual Cortex (Laminae, Columns)
One component of the vertical organization of visual cortex is the projection of cells in supragranular layers to cells in the infragranular layers. By recording from cells in the infragranular layers during synaptic inactivation of layers 1-3, I have examined the possibility that this projection …
-
Spinothalamic tract neurons in laminae I, III and IV of the rat: a retrograde neuronal tracing study
… have identified a population of large neurons in laminae III and IV of rat spinal cord that express the neurokinin 1 receptor (NK1r) and have prominent dorsal dendrites that enter the superficial laminae. A substantial body of evidence points to the involvement of this population of cells in …
-
A micromechanics-based method for off-axis strength prediction of unidirectional laminae - Approach for a nonlinear rubber based lamina
… strength of unidirectional linear elastic laminae. These composites fail by matrix cracking along a plane parallel to the fiber direction. The stresses in the matrix are calculated using a local stress analysis based on a concentric cylinder model. This model consists of a unique fiber …
-
High resolution palaeoceanography and palaeoclimatology from mid and high latitude Late Cretaceous laminated sediments
… is based on the pervasive occurrence of laminae types that can be related to different seasons and placed into robust annual flux cycles. In the Marca Shale this consists of intermittent near-monospecific laminae of Azpeitiopsis morenoensis deposited in the late summer, succeeded by a …
-
Postnatal development of brainstem cholinergic inputs to the dorsal lateral geniculate nucleus of the domesticated ferret, Mustela putorius furo
… The first establishes the eye-specific laminae, A and A 1, and the second establishes ON/OFF sublaminae within laminae A and At. In contrast to eyespecific segregation, which seems to rely only on presynaptic activity, ON /OFF sublamination requires both pre- and postsynaptic activity. …
-
Cannabinoid CB1 Receptor Expression and Localization in the Dorsal Horn of Male and Female Human and Rat Spinal Cord Tissue
… type 1 receptor (CB1R) across dorsal horn laminae and cell populations in male and female adult rats and humans. Qualitatively, we observed increased neuropil immunostaining in the SDH of rats and humans, and somatic staining in deeper laminae. Quantitative results indicated a significant …
-
Analysis of Tow-Placed, Variable-Stiffness Laminates
It is possible to create laminae that have spatially varying fiber orientation with a tow placement machine. A laminate which is composed of such plies will have stiffness properties which vary as a function of position. Previous work had modelled such variable-stiffness laminae by taking a …
-
Genesis and Sedimentation of an Ice-Walled Lake Plain in Northeastern Illinois
… bedding and fossil lacustrine ostracodes. The laminae were mainly deposited through grain settling from hypopycnal density currents, with the particle settling velocities revealing that the laminae were deposited in a short period of time (perhaps weekly or monthly), while cumulative settling …
-
Paleoclimate reconstructions over the last century from a tropical speleothem on Niue Island, South Pacific
… alternating between white porous calcite laminae deposited during the austral summer and dark, compact calcite laminae deposited during the austral relatively dry winter. High resolution (sub-annual) stable isotope and trace element profiles accompanied by trace element X-ray mapping were …
-
Stromatolitic Knobs in Storrs Lake, San Salvador, Bahamas: Insights into Organomineralization
… a mechanism for organomineralization and laminae formation can begin to be determined. The mechanism for <em>in situ</em> precipitation is relatively comparible in each of these systems, though the mechanism of laminae formation varies from microbial to more extrinsic controls. This …
-
High resolution sedimentologic and stratigraphic investigation of a storm-dominated carbonate ramp, Hoogland Platform (ca. 549 Ma), Nama Group, Namibia
… of relief between sedimentary "elements" (e.g. laminae, bed, bedset) or larger scale "entities" (e.g. parasequences, systems tracts, depositional sequences). This damping of topographic elements on the seafloor was found to act at a variety of temporal and spatial scales from the sub-annual and …
-
Compressive strength of lamina reinforced and fiber reinforced composite materials
… with a laminate containing initially curved laminae has been proposed. By applying the Timoshenko beam equations to each layer of the laminate, an interlaminar shear stress analysis which can be used to predict the behavior of the laminate under compressive loading was developed. Two modes of …
-
Taxonomie und Wuchsformen laminar-inkrustierender Bryozoen aus Japan und Neuseeland im latitudinalen Vergleich
… des Wachstumsrandes hat. Während Z- und M- Laminae in kühl temperierten Gewässern dominieren, steigt der Anteil an S- und C- Laminae in subtropisch beeinflußten Gebieten deutlich an. Vergleichende Studien von den Philippinen und aus Aquaba zeigen, daß der Konkurrenzdruck um freies Substrat …
-
Interpreting Ancient Climate Signals from Sedimentary Archives of Lake Bosumtwi, Ghana
… identification and measurement of abundant laminae in sedimentary records have been manual processes that were extremely labor intensive, subjective, and error-prone. The first part of this dissertation project is to develop a new method that can automatically identify and measure laminae …
-
Plasticity in mice nociceptive spinal circuits -role of cell adhesion molecules.
… of nociceptive transmission in the superficial laminae. In particular, apparently normal wild type mice seem to lack both short and long term potentiation in the first order synapses, mechanisms that are powerful in the rat. These findings suggest that the current view on the locus of the …
-
Experimental study of internal gravity waves over a slope
… in the vortex cells creates thin horizontal laminae that are more homogeneous than the adjacent layers. These laminae slowly penetrate the fluid interior, creating a step-like vertical density structure. Available linear theoretical solutions for the velocity in the viscous boundary layer, …
-
Particle flux in the Western Black Sea in the present and over the last 5,000 years : temporal variability, sources, transport mechanisms
… The coccoliths are concentrated in the white laminae (>93 % CaCO3), and if the seasonal dynamics in the particle supply at the sediment trap site is taken as a standard, the white laminae would be deposited between about June and January. The black laminae contain largely terrigenous matter …
-
The equine metabolic syndrome: studies on the pathophysiology of obesity, insulin resistance, and laminitis in equids
… content between depots. Within the digital laminae, vascular dysfunction and inflammation have been reported to play roles in laminitis associated with equine IR. The purpose of the next series of studies was to characterize laminar insulin receptor (IRc) expression and inflammation in …
-
The Functional Role of Anatomical Feedback Connections In Visual Attention
… have not reported any differences across the laminae. Here, we find that feedback-related effects predominantly occur in the supragranular layers of the feedback recipient area, the preferential target of feedback synapses. Finally, the current literature has neglected to determine if any …
-
Investigating laminated sediments of the Al-Azraq basin, Jordan and the implications for paleoenvironmental variability
… in depositional processes, alternating fine laminae of terrestrial material and Ca evaporite, possibly aragonite, and accompanying changes in moisture flux. The data demonstrate visible laminated rhythmites. XRF results identify alternating laminae of Ca and Si, SEM scans identify seasonal …
Page 1 of 4