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 81 for “"Dead end"”.
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Acoustic metamaterials comprised of dead-end pores and black hole effect for low frequency sound absorption in linear and nonlinear regimes
… frequency resonance in the linear regime, depending on the geometrical parameters. This model is complemented by a Transfer Matrix Model (TMM) and Finite Element Model (FEM) for both pancake and profile structures. The latter accounts for the influence of the structural resonances and …
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Dead-end and crossflow microfiltration of yeast and bentonite suspensions: experimental and modelling studies incorporating the use of artificial neural networks
… steady state flux of dried yeast suspensions in dead-end microfiltration for a range of operating parameters. Trained networks were used in predicting filtration characteristics of previously unseen data, with excellent agreement. Network weights were interpreted for both the specific resistance …
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Molecular mechanisms governing germ line development in zebrafish and the role of this lineage in sexual differentiation
Während der Embryonalentwicklung des Zebrafisch (Danio rerio) werden die Urkeimzellen sehr früh von den anderen Zelllinien durch eine maternale, spezifische Form des Cytoplasmas, dem so genannten Keimplasma, unterschieden. Bei den nachfolgenden Zellteilungen verteilt sich dieses Keimplasma …
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Molecular Mechanisms in Primordial Germ Cell Development in Zebrafish
… microRNAs) involviert sind. Interessanterweise, Dead end, ein Komponent von Keimgranulaten, ist essentiell für mehrere Aspekte der Keimzellentwicklung in Zebrafisch, wie Zellmotilität und Erhalt des Zelltypus. Um die spezifische Funktion der Keimgranulate in der Keimzellentwicklung zu verstehen, …
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Solute dispersion in selected tropical soils
… curves differed because of different dead-end porosities of these soils and were estimated to range from 4 to 30 per cent. Potassium, calcium, and phosphate showed trends in their breakthrough curves that were due to dead-end pores. When dead-end pore volume was large, adsorption was …
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Undertow
Miranda Friend, a therapist at a Cape Town psychiatric hospital, wants to reverse herself from the cul-de-sac of her life. At thirty, she is in a dead-end relationship and is working in a hospital which is struggling under new management.
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PVDF-graphene conductive composite membrane and PVA-graphene conductive composite membrane preparation and application
… it could not prevent membrane blocking in dead-end electrical filtration. Based on calculation, if charged particles were held into electric field, at least 118 V must be used in dead-end electrical filtration. But with a cross flow filtration equipment, only 1 to 2 V was needed. Further …
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Statistical Properties of Thompson's Group and Random Pseudo Manifolds
… of Cleary and Taback by completely classifying dead end elements of Thompson's group, and use the classification to discuss the spread of dead end elements and describe interesting elements we call deep roots. We discuss how deep roots may aid in answering the amenability problem for Thompson's …
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BETWEEN LIGHT AND DARKNESS: THE ROUND-TRIP OF SURFACE AND SUBTERRANEAN ANIMALS
… considered by many authors as an evolutionary dead end. In practice; an animal that has evolved to exploit the cave environment can not perform the reverse process and will never re-colonize the external environment. The main purpose of this thesis was to verify whether this theory was correct.
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PERMEABILITY AND MOISTURE DAMAGE CHARACTERISTICS OF ASPHALT PAVEMENTS
… than the bad performing sections. To this end, moisture damage potential of field cores is determined in the laboratory using Moisture Induced Sensitivity Test (MIST) device and the AASHTO T 283 method. In MIST method, a sample is wet conditioned using repeated increase and decrease of pore …
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Purification and characterization of malate dehydrogenase and 6- phosphogluconate dehydrogenase from Haemophilus influenzae
… of M,= 61,000. Initial velocity, product, and dead-end inhibition studies were consistent with an ordered bi-bi mechanism in which NAD is the first substrate bound to the enzyme. Several NAD analogs structurally altered in either the pyridine or purine moiety functioned as coenzymes in the …
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Pore Scale Simulation of Transport in Porous Media
… by stagnant zones, which may result e.g. from dead-end pores or pores perpendicular to the direction of the flow. A program to simulate transport in porous media was developed and verified using several test-problems. An example calculation with a randomly generated porous medium was performed. …
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LEO: an LLM-Powered EDA Overview
… sensemaking process with overwritten cells, dead-end code, and fragmented logic. This challenge is especially pronounced when analysts either encounter a notebook authored by someone else or revisit a self-authored notebook after significant time has passed. In both cases, understanding the …
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Vertically-aligned carbon nanotube membranes for water desalination and ultrafiltration
… polarization in used setup of modified dead-end filtration cell. Experimental results confirmed that the permeability of VACNT membranes increases with the density of the VACNTs, while the salt rejection is almost independent of the VACNT density. The second phase of the PhD project …
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The reactive
Lindanathi Mda works a dead end job at a video store and runs an operation selling ARV's with his friends, Carmichael and Linireaux. He is tormented by the memory of having contributed to his younger brother Luthando's death. He lives a life of evasion, taking drugs and a substance called …
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Layer by Layer, Nano-particle "Only" Surface Modification of Filtration Membranes
… under typical NF operating conditions using dead-end permeation experiments and their performance compared quantitatively with realistic hydrodynamic models, with favorable results. For track etched polycarbonate MF substrates, surface modification causes a permeability reduction of …
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Identifizierung neuer vegetal lokalisierter RNAs in der Xenopus laevis Oozyte und deren funktionelle Charakterisierung
… mRNA Moleküle haben eine wichtige Funktion während der frühembryonalen Entwicklung. Mit dem Ziel, neue vegetal lokalisierte mRNA Moleküle zu isolieren, wurden 10000 cDNA Klone einer mit vegetal-kortikal lokalisierten Transkripten angereicherten cDNA Bibliothek mit Hilfe von Macro- und Microarray …
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3D printing-based microfluidics for geosciences
… fractures and matrix, it is crucial to comprehend the interaction between the larger-scale features (fractures) and the smaller-scale features (matrix). While models describing fluid flow in multiscale-porous media exists, it has not been validated experimentally due to lack of a benchmark …
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Pedagogical Fusion
… use the word "problem" I feel that there is a tendency in teacher training for a student to latch onto one professor and model their teaching practices after that one mentor. While this is not always a bad thing I feel that it can lead some students down a dead-end path of self-exploration and …
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A Numerical Model for Flux Decline During the Crossflow Ultrafiltration of Colloidal Suspensions
… mode. Besides the crossflow filtration tests, dead-end filtration tests were also carried out to independently determine a model parameter, the specific cake resistance. Another model parameter, the effective diffusion coefficient, is defined as the sum of molecular and shear-induced …
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