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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Pedicled and free TRAM flaps in breast reconstructions : a comparative study /

Edsander-Nord, Åsa, January 1900 (has links)
Diss. (sammanfattning) Stockholm : Karol. inst. / Härtill 5 uppsatser.
2

Low power architecture and circuit techniques for high boost wideband Gm-C filters

Gambhir, Manisha 17 September 2007 (has links)
With the current trend towards integration and higher data rates, read channel design needs to incorporate significant boost for a wider signal bandwidth. This dissertation explores the analog design problems associated with design of such 'Equalizing Filter' (boost filter) for read channel applications. Specifically, a 330MHz, 5th order Gm-C continuous time lowpass filter with 24dB boost is designed. Existing architectures are found to be unsuitable for low power, wideband and high boost operation. The proposed solution realizes boosting zeros by efficiently combining available transfer functions associated with all nodes of cascaded biquad cells. Further, circuit techniques suitable for high frequency filter design are elaborated such as: application of the Gilbert cell as a variable transconductor and a new Common-Mode-Feedback (CMFB) error amplifier that improves common mode accuracy without compromising on bandwidth or circuit complexity. A prototype is fabricated in a standard 0.35mm CMOS process. Experimental results show -41dB of IM3 for 250mV peak to peak swing with 8.6mW/pole of power dissipation.
3

Arteriogenese im Gehirn der Ratte Entwicklung und Charakterisierung eines Infarktmodells sowie Untersuchung der durch den Granulozyten-Makrophagen Kolonie-Stimulierenden-Faktor akzelerierten Arteriogenese /

Schneeloch, Edda. January 1900 (has links)
Freie Universiẗat, Diss., 2005--Berlin. / Dateiformat: zip, Dateien im PDF-Format. Erscheinungsjahr an der Haupttitelstelle: 2004.
4

Segregation of Gm allotypes and immunoglobulin levels

Barnhart, Donald William January 1976 (has links)
This document only includes an excerpt of the corresponding thesis or dissertation. To request a digital scan of the full text, please contact the Ruth Lilly Medical Library's Interlibrary Loan Department (rlmlill@iu.edu).
5

Design and Simulation of All-CMOS Temperature-Compensated gm-C Bandpass Filters and Sinusoidal Oscillators

Parajuli, Purushottam 16 August 2011 (has links)
No description available.
6

An evaluation of attitudes and behaviours towards food-related risks

McDonald, Anne-Lise Nadia Marina January 2001 (has links)
No description available.
7

Saturn, The GM/UAW Partnership

Rubinstein, Saul, Kochan, Thomas 06 June 2002 (has links)
Designed and implemented as a partnership between GM and the UAW, Saturn breaks new ground in firm governance,management and industrial relations. Through detailed study of Saturn?s partnership arrangements we have found that thelocal management and union leaders have not only implementedthe contractual joint governance institutions which involvelabor in business strategy, product development, supplier andretailer selection, and manufacturing policy, but have also created a system of co-management which gives hundreds ofjointly selected unionoperations management.1members theIn order toresponsibilities ofunderstand the impact ofthe involvement of union members as management, we analyzedthe relationship between the behaviors of both representedand non-represented middle managers, the dynanics of theirindividual union-management partnership relations,differences in their patterns of communication andcoordination, and Saturn?s quality performance. We alsoexamined each partner?s use of time to explore the balancingof social and economic tasks between represented and nonrepresentedpartners. These data were combined with analysesof the tensions within the union between its traditional rolein membership representation, and its new role in managementand governance. Finally, we raise questions regarding thelearning from and diffusion of Saturn to the rest of the GMand the UAW organizations. / The Impact of Co-Management and Joint Governance on Firm and Local Union Performance / Funds for this researchwere provided by the AlfredP.SloanFoundation,the MIT InternationalMotorVehicleResearchProgram,the MIT Leadersfor ManufacturingProgram,and the NationalscienceFoundation..
8

The impact of the Education Reform Act 1988 on accountability, choice and planning in the schools' system, with special reference to Grant Maintained schools

Feintuck, Michael Jeffrey January 1993 (has links)
No description available.
9

Characterisation of storage lipid accumulation in developing fruits and cell cultures of coriander

Bowra, Steve January 1998 (has links)
No description available.
10

Generierung humaner Antikörper-Spezifitäten zur Therapie entzündlicher Erkrankungen / Generation of Human Antibody Specificities for Treatment of Inflammatory Diseases

Krinner, Eva-Maria January 2006 (has links) (PDF)
Der Granulozyten-Makrophagen Kolonie-stimulierende Faktor (GM-CSF) spielt eine zentrale Rolle in entzündlichen Prozessen. Die Behandlung mit Antikörpern, die murines GM-CSF neutralisieren, zeigte signifikante Behandlungseffekte in Maus-Modellen für Rheumatoide Arthritis, Autoimmune Enzephalomyelitis, entzündliche Erkrankungen der Lunge und Psoriasis. Diese Arbeit beschreibt die Generierung des ersten vollständig humanen Einzelketten (scFv)-Antikörpers, der effektiv humanes GM-CSF (hGM-CSF) neutralisiert. Dieser humane scFv-Antikörper wurde mit Hilfe der Phage-Display-Technologie, ausgehend von einem monoklonalen Ratten-Antikörper mit hGM-CSF-neutralisierender Aktivität, konstruiert. In einem ersten Schritt wurde die VH-Domäne des parentalen Ratten-Antikörpers mit einem humanen leichte Ketten V-Repertoire kombiniert. Nach Phage-Display-Selektion wurde ein dominanter Klon identifiziert, der für ein chimäres Ratte/Human scFv-Fragment kodiert. Dieser scFv-Antikörper neutralisiert hGM-CSF mit einer halbmaximalen inhibitorischen Konzentration (IC50) im nanomolaren Bereich. Die humane leichte Kette dieses Klons wurde dann mit einem humanen schwere Ketten V-Repertoire kombiniert. Um die Bindungsspezifität des Ursprungsantikörpers für den neutralisierenden Bereich auf dem Antigen zu erhalten, enthielt dieses Repertoire die Komplementaritäts-bestimmende Region 3 (CDR3) der parentalen VH-Domäne. Nach Phage-Display-Selektion wurden mehrere scFv-Antikörper identifiziert, die hGM-CSF im niedrig nanomolaren Konzentrationsbereich neutralisierten. Das scFv-Fragment mit der höchsten hGM-CSF-neutralisierenden Aktivität (3077) wurde in verschiedene therapeutisch relevante Antikörperformate überführt. Zum einen wurde das scFv-Fragment über einen zusätzlichen C-terminalen Cystein-Rest an ein verzweigtes, 40 kD-grosses Polyethylenglycol (PEG) –Polymer konjugiert. Zum anderen wurde das scFv-Fragment durch Fusion mit humanen konstanten Immunglobulin-Domänen zu einem ganzen IgG1/kappa-Antikörper vervollständigt. Die so generierten Konstrukte mit identischer Spezifität wurden dann in vitro im Hinblick auf Bindungsaffinität, Neutralisierungsaktivität und Stabilität untersucht. Die Konjugation des PEG-Polymers hatte einen vernachlässigbaren Effekt auf das Neutralisierungspotential des scFv-Fragments in vitro, obwohl sie aufgrund einer verlangsamten Assoziationsrate eine reduzierte Bindungsaffinität verursachte. Der humane IgG1-Antikörper zeigte sowohl eine verbesserte Bindungsaffinität als auch eine erhöhte Neutralisierungsaktivität im Vergleich zum nicht-PEGylierten wie auch zum PEGylierten scFv-Fragment. Wir konnten außerdem zeigen, dass die PEGylierung in der thermischen Stabilität des scFv-Antikörpers einen deutlichen Anstieg um 10°C vermittelte. Aufgrund der hohen Neutralisierungsaktivität und Stabilität des IgG1-Antikörpers 3077 wie auch des PEGylierten scFv-Fragments 3077 sind beide Moleküle - in unterschiedlichen klinischen Anwendungsbereichen - potentielle Kandidaten für eine Behandlung humaner entzündlicher Erkrankungen. / Granulocyte-macrophage colony stimulating factor (GM-CSF) plays a central role in inflammatory processes. Treatment with antibodies neutralizing murine GM-CSF showed significant effects in mouse models of rheumatoid arthritis, lung inflammation, autoimmune encephalomyelitis and psoriasis. This work describes the generation of the first human single-chain antibody (scFv) potently neutralizing human GM-CSF (hGM-CSF). This human scFv fragment was constructed by phage display technology starting from a rat monoclonal antibody with hGM-CSF neutralizing activity. In a first step the VH domain of the parental rat antibody was combined with a human light chain variable (V) repertoire. After phage display selection one dominant clone was identified which encoded a chimeric rat/human scFv antibody neutralizing hGM CSF with a low nanomolar half-maximal inhibitory concentration (IC50). The human light chain of this clone was then combined with a human heavy chain V repertoire. The latter preserved the complementary determining region (CDR) 3 of the parental rat VH domain to retain binding specificity to the neutralizing binding area on the antigen. After phage display selection, several human single-chain antibody fragments were identified that efficiently neutralized human GM-CSF at low nanomolar concentrations. The most potent GM-CSF neutralizing human scFv fragment (3077) was further engineered to different antibody formats with relevance for therapeutic application. On the one hand, the scFv fragment was conjugated to a branched 40 kDa polyethylene glycol (PEG) polymer via an additional C-terminal cysteine residue. On the other hand, the scFv fragment was converted to a human IgG1/kappa-antibody by fusion with human constant immunoglobulin domains. The naked scFv, the PEGylated scFv and the IgG antibody of identical specificity were then compared to each other in terms of binding affinity, neutralizing activity and stability in vitro. PEG conjugation had a neglegible effect on the in vitro neutralizing potential of the scFv fragment although it caused a significant drop in binding affinity due to a reduced on-rate. The human IgG1 antibody variant showed an improved equilibrium dissociation constant as well as neutralizing activity superior to the non-PEGylated and the PEGylated scFv fragment. We also demonstrated that PEGylation mediates a significant increase in thermal stability of about 10°C as compared to the naked scFv fragment. Because of the high neutralizing activity and stability the IgG1 3077 antibody as well as the PEGylated scFv fragment 3077 both are - in different clinical settings - potential candidates to treat pro-inflammatory human diseases.

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