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.
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Showing 1 to 20 of 124 for “"L4"”.
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A Subject Specific Surface Electromyography Model For Estimating L4/L5 Compressive Loading
… I developed a non-invasive EMG model to measure L4/5 compressive loading and applied the model to measure differences in L4/5 compressive loading before and after a six-week hamstring stretching program. Background: Instrumented Vertebral Body Replacements (VBR), as well as Biomechanical and EMG …
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Solar Sailing Adaptive Control Around the Earth-Moon Lagrange Point L4 for Stellar Observations
<p>To expand our knowledge about the influence of the Sun in the cislunar region, as well as our understanding of shocks due to Coronal Mass Ejections and large coronal magnetic reconnection, a solar sailing approach is proposed to separately capture lunar occultations and observe the solar corona …
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Significance of Specific Force Models in Two Applications: Solar Sails to Sun-Earth L4/L5 and GRAIL Data Analysis Suggesting Lava Tubes and Buried Craters on the Moon
In the trajectory design process, gravitational interaction between the bodies of interest plays a key role in developing the over-arching force model. However, non-gravitational forces, such as solar radiation pressure (SRP), can significantly influence the motion of a spacecraft. Incorporating …
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Improving Accessibility of Fully Automated Driving Systems for Blind and Low Vision Riders
… – 5 automated driving system-dedicated vehicles (L4+ ADS), which will not require human operators to provide any input into the dynamic driving task, could empower the BLV community by providing an independent means of transportation. Yet, the BLV community has concerns that their needs are not …
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Factors that impact Pseudo-nitzschia spp. occurrence, growth, and toxin production
… (PN) dynamics in the western English Channel (L4) and the environmental factors impacting on domoic acid (DA) production in these waters. This is combined with laboratory studies examining key environmental factors and the multifactorial impact of multiple macronutrient and micronutrient …
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Optimization-based biomechanical evaluation of isometric exertions on a brake wheel
… the levels of compressive force on the L3/L4 spinal joint that existed in subjects during an experiment that simulated the hand brake setting task. We recorded three-dimensional body posture and resultant forces at the hands for analysis by the model. The model resolved the external forces …
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Experience-Dependent and Input-Specific Regulation of Neocortical Circuit Development by Genes Linked to Neurodevelopmental Disorders
… callosal inputs, synapses originating from local L4 and L2/3 circuits are normal with postsynaptic Fmr1 deletion, revealing an input-specific role for postsynaptic Fmr1 in regulation of synaptic connectivity within local and callosal neocortical circuits. Opposite to Fmr1 KO, postnatal deletion of …
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Synthesis and Characterisation of Porous Mixed-Ligand Metal-Organic Frameworks for Sorption Studies
… diimide (L3) and N,N’–bis(gly)–biphenyl diimide (L4) were successfully synthesized and characterized. The second part of this study describes the synthesis of five (5) new MOFs, namely; {[Zn2(OBZ)2(L2)]ꞏ(DMF)3}n (LMMOF01), {[Zn(TPA)(L4)0.5]ꞏ(DMF)2}n (LMMOF02), {[Co3(TPA)3(L1)]ꞏ(DMF)4}n (LMMOF03), …
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Binding properties of normal and cancerous liver proteins
Call number: LD2668 .T4 1952 L4
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Neocortical Layer 4 to Layer 2/3 Sensory Information Processing Investigated with Digital-Light-Projection Neuronal Photostimulation
… “barrels” in layer 4 (L4) receive principal input from a single whisker. L4 projects to layer II/III (L2/3), where the circuit diverges to multiple postsynaptic targets. Using the DLP-photostimulation system, we modulated the synchronicity of action potentials in L4 …
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Investigating molecular mechanisms of neuronal regeneration: a microarray approach.
… changes in gene expression in the L4 dorsal root ganglion (DRG) in rat models of PNS and CNS injury. Our models included crush injury to both branches of the bifurcating axon of sensory neurons with cell bodies in the DRG (DRGNs). Injury to the peripheral branch at the level of the …
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Subcortical Inputs Governing Cortical Network Activity
… The thalamocortical projection to layer 4 (L4) of primary sensory cortex is thought to be the main route by which information from sensory organs reaches the neocortex. Sensory information is believed to then propagate through the cortical column along the L4→L2/3→L5/6 pathway. This thesis …
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Passive experience-dependent plasticity in mouse primary visual cortex
… field potential (LFP) recordings in layer 4 (L4) of V1 allow for the tracking of visually evoked potentials (VEPs) in response to phase-reversing sinusoidal grating stimuli. As a given visual stimulus becomes familiar to the mouse, the VEP magnitude increases. This increase in VEP magnitude is …
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Strength and dendritic organization of thalamocortical synapses onto excitatory layer 4 neurons
… even though cortical synapses onto layer 4 (L4) neurons outnumber thalamic synapses ten to one. Previous in vitro studies have suggested that enhanced efficacy of thalamocortical (TC) relative to corticocortical (CC) synapses explains the effectiveness of the thalamus. We investigated …
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Synthesis of mixes ligand metal-organic frameworks for sorption studies
… lmethyl)-[5,5-biisoindoline]-1,1-3,3-tetraone (L4) and 5,5-carbonylbis(2-(pyridin-3-ylmethyl) isoindoline-1,3-dione) (L5). The second part of this study describes the synthesis of seven (7) new MOFs namely; {[Zn(DCT)(L1)0.5]·(DMF)}n (RMMOF 1), {[Zn(DCT)(L2)0.5]·(DMF)·(H2O)}n (RMMOF 2), …
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Metallodendrimers as catalysts for C-C coupling reactions
… their palladium(II) complexes. The ligands L1 – L4 were synthesized following Schiff base condensation reactions. The ferrocenylimine ligands L1 and L2 were prepared from ferrocenecarboxaldehyde and 1,3-diaminopropane or DAB-4-(NH2)4, while the G1 dendrimeric N,N′ ligands L3 and L4 were prepared …
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Design, synthesis and characterization of new iron and aluminium chelating agents
… work are: A new family of hydroxypyrone ligands (L4, L5, L6, L7, L8, and L9) has been synthesized and fully characterized. These ligands are easy and cheap to produce; Complex formation equilibria showed good efficiency and selectivity for iron and aluminium. With Fe3+ various protonated 2:3 Fe:L …
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Artrodesis lumbares, rigidez del sistema y su repercusión en los discos adyacentes
… de fusión transforaminal del segmento L4-L5. Se estudia el efecto de la rigidez del sistema utilizado entre dos configuraciones diferentes, fusión transforaminal circunferencial 360º o limitada a 270º, a la hora de transferir las cargas a los segmentos móviles adyacentes (L3-L4 y …
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Computationally Efficient Finite Element Models of the Lumbar Spine for the Evaluation of Spine Mechanics and Device Performance
… times. In this study a computationally efficient L4-L5 FSU model and a L1-Sacrum multi-segment model were developed and validated. The FSU is a functional spine unit consisting of two adjacent vertebral bodies, in this case L4 and L5. The multi-segment model consists of all lumbar vertebrae and …
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A patient specific total disc replacement to treat degenerative disc disease
… the mechanical environment of the native L4/L5 intervertebral disc and evaluate its capacity to support regenerative cell responses under physiological cyclic loads. Finite element (FE) modelling was used as a prescriptive rather than descriptive tool to guide the design of a …
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