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 170 for “"Slit"”.
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Studies of DNA dynamics in slit-like nanochannel confinement
… conformation. In particular, confinement in a slit was shown, both experimentally and through scaling analysis, to diminish long length scale polymer-induced solvent flow sufficiently enough to render those effects negligible in the behavior of the confined molecule. We also demonstrate that …
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Dscam Switches Slit Repulsion To Mild Attraction Via Robo Receptors
… axon guidance cues, such as Netrins and Slits. The axonalgrowth cone contains receptors that distinguish these guidance molecules andtranslates them into attractive or repulsive responses. Slit repels axons from theCNS midline by binding to the Robo (Roundabout) receptor. Netrin acts as …
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The Role of Slit/Robo Signalling in Peripheral Nerve Regeneration
The role of Slit/Robo signalling in peripheral nerve regeneration. Slit/Robo chemorepulsive signalling has been shown to play a role in axon pathfinding during the development of the central nervous system. There is evidence that Slit/Robo are expressed in the adult intact and injured peripheral …
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Radiation dose measurement and prediction for linear slit scanning radiography
… describes dose measurements made for linear slit scanning radiography (LSSR) and a dose prediction model that was developed for LSSR. The measurement and calculation methods used for determining entrance dose and effective dose (E) in conventional X-ray imaging systems were verified for use …
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Balancing growth and repulsion: Slit proteolysis generates diverse signals in axon guidance
… axon guidance are large secreted proteins called Slits. Slits were first identified as repellents of CNS axons at the midline, the medial separation of the left and right sides of the body. In the absence of Slits, all CNS axons collapse onto the midline. The repulsion conducted by Slits is …
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External cavity laser with coherent amplifier array and multiple slit spatial filter
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1986.
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Slit óvígðrar sambúðar og uppgjör fjárskipta : í hvaða tilvikum geta helmingaskipti átt við
… er beitt við uppgjör fjárskipta við slit óvígðrar sambúðar. Veigamikill munur er á réttaráhrifum varðandi fjárskipti við slit óvígðrar sambúðar annars vegar og hjúskapar hins vegar. Einskorðast sá munur af því að um hjúskap, stofnun og slit, gilda lögfestar reglur, en unnt er að …
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System characterisation of a full body slit scanning radiography machine : theory and experiment
… model of the imaging chain of the Statscan slit scanning full body radiography machine. A Cascaded Linear-Systems model of the detector was developed and the theoretical DQE, MTF and NPS were compared to measure values of the RQA7 beam quality described in IEC 6222-1. The effect on Detector …
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The functional and cosmetic outcome of the ventral slit procedure for congenital megaprepuce
… functional and cosmetic outcomes of the ventral slit procedure, an uncomplicated technique used to restore urinary flow which, importantly, preserves the foreskin. Parents of 18 paediatric patients were interviewed post-operatively regarding phallic appearance and functionality following surgery. …
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Mummy regulates slit-robo signaling to mediate axon guidance in drosophila embryonic nerve cord
… various human nervous system disorders. The Slit-Robo signaling pathway is a well-studied evolutionarily conserved axon guidance mechanism. Slit is a chemo-repellant secreted by midline glial cells and binds to specific receptor Roundabout to mediate axonal repulsion. However, molecules …
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In situ measurement of lattice strain using synchrotron radiation and a conical slit system
… loading is presented in detail. The conical slit system at Argonne National Laboratory’s Advanced Photon Source is utilized to isolate a single grain with an orientation of interest from the highly textured alloy. A total of 39 reflections contribute to the calculation of the strain tensor …
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An experimental and numerical analysis of the exit flow in a slit die for polymer melts
A slit die has been constructed to use both flow birefringence and direct pressure measurements to study the extrapolated exit pressure (Px) and the exit pressure theory used to evaluate the magnitude of the primary normal stress difference (N1) from the value of the exit pressure. Flow …
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Hvaða þættir eru notaðir til að ákvarða endurkomu til íþróttaiðkunar eftir slit á fremra krossbandi? Kerfisbundin samantekt
INNGANGUR: Slit á fremra krossbandi (ACL) eru algeng og erfið meiðsli í íþróttum. Í kjölfar þeirra getur hnéð haft mikil áhrif á daglegt líf einstaklinga til lengri tíma, jafnvel ævilangt. Endurhæfingin er löng og oft fylgja önnur samfarandi meiðsli í kjölfarið. Markmið þessarar kerfisbundnu …
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An experimental investigation of the effect of slit length on the bursting strength of film and fabric plastic cylindrical shells
… regards residual strength in the presence of a slit. It is shown that the strength-weight ratio of the fabric cylinders is approximately twice that of the film cylinders, largely due to the strength advantage of fiber over film. The results are compared with the predicted bursting strength …
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Development of the in vivo flow cytometer
… laser beam is focused by a cylindrical lens to a slit of light that is then demagnified and focused across a blood vessel by an achromat and microscope objective. Fluorescent cells are excited one by one as they flow through the excitation laser light slit, creating a burst of fluorescence whose …
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Plasmonic devices for manipulating light at the nanoscale: slow-light waveguides and compact couplers
… I also introduce compact wavelength-scale slit-based structures for coupling free space light into MDM subwavelength plasmonic waveguides. I first show that for a single slit structure the coupling efficiency is limited by a trade-off between the light power coupled into the slit, and the …
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Solid/liquid intermolecular transfer of dynamic nuclear polarization - enhanced flowing fluid ¹H NMR signals via immobilized spin labels
A flow solid/liquid intermolecular transfer (SLIT) ¹H dynamic nuclear polarization (DNP) experiment is described. The SLIT ¹H DNP results are reported for the case of flowing benzene over silica gel surfaces prepared with stable immobilized nitroxide and phenoxy spin labels. The advantages of the …
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Compartmentalization and axon guidance in the Drosophila brain
… the Drosophila visual system, I have found that Slit and Roundabout (Robo) proteins function to prevent cells from adjacent compartments from mixing. I have defined a boundary between two distinct compartments, the lamina and lobula, and find that the secreted ligand Slit is present in the …
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