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Showing 1 to 20 of 71 for “"DAB"”.
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Design and Demonstration of a DAB Based RadCom System
… of the Digital Audio Broadcasting signal. These DAB signals are described by the DAB mode structure, defining their time and frequency domain characteristics. This structure was generalised to describe the RadCom signal and used by the signal generation chain to facilitate the generation of …
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Über die exsikkierende und okkludierende Wirkung von Schüttelmixturen, Zinköl, Polyethylenglycolgel DAB und einer Polyethylenglycolpaste
… NRF 11.20, Lotio Cordes®, Polyethylenglycolsalbe DAB und einer Polyethylenglycolpaste auf die nicht hydrierte und auf die hydrierte Haut untersucht. Das Ziel dieser Untersuchung lag in der Festsetzung einer klaren Indikationsstellung für diese Substanzen in der klinischen Praxis. Bei den beiden …
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The relationship between the BBC and the commercial radio sector in promoting DAB (Digital Audio Broadcasting) in the United Kingdom.
The place of Digital Audio Broadcasting (DAB) in the UK provides an interesting area of study. As of 2015, it is a platform which has been in existence for twenty years. During that time its position has been nebulous. It represents only one method of listening to radio output in a digital format …
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Novel non-viral delivery systems for cancer gene therapy
… 3- diaminobutyric polypropyleneimine (DAB), by determining their physicochemical characteristics (measurement of particle size, Zeta potential, DNA condensation) and evaluating their in vitro transfection. Conjugation of targeting ligands such as transferrin and lactoferrin is an …
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Synthesis and evaluation of novel non-viral gene delivery systems for prostate cancer targeting
… bearing diaminobutyric polypropylenimine (DAB) based dendriplexs would improve thetargeting of therapeutic genes in vitro and in vivo. The chemical and physical characteristics of the synthesised dendrimers were first determined, followed by various in vitro experiments, to assess the …
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The Copycat Effect: Do social influences allow peer team members' dysfunctional audit behaviors to spread throughout the audit team?
… quality reducing dysfunctional audit behaviors (DAB) within the profession. Social influence theory, applied in an auditing context, posits that staff auditors are influenced not only by the preferences of their superiors (i.e., compliance pressure) but also by their peers' DAB (i.e., conformity …
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Design, Modeling and Analysis of an AC-AC Dual Active Bridge Converter
… converter topologies, the Dual Active Bridge (DAB) has become popular for its bidirectional power flow capability and galvanic isolation, primarily in the DC application space. Advancements in semiconductor technologies have introduced new bidirectional switches, opening avenues for novel SST …
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Gene delivery with amphiphilic lower generation polypropylenimine dendrimer
… gene delivery agent. PPI dendrimer generation 3 (DAB-16-Am) was substituted with a low level of cetyl chains (less than 5 molar percent) by reaction with 1-bromohexadecane under carefully controlled conditions. Structural characterisation was carried out using nuclear magnetic resonance …
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Towards nuclear imaging with polynuclear radiotracers : the development of monomeric and dendritic scaffolds for radiometals
… of 1,4-diaminobutane poly(propylene amine) (DAB-PPI) dendrimer-based ligands were prepared with the aim of developing ligands that will permit the synthesis of multinuclear technetium-99m (99mTc) radiolabeled complexes. The ligands were synthesized by incorporating N,N-donor atom …
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DC-DC converter designs for medium and high voltage direct current systems
… modular multilevel design of dual active bridge (DAB) converters is analysed in light of state-of-the-art research in the field. The multilevel DAB structure is meant to serve medium and high voltage applications. The modular design facilitates scalability in terms of manufacturing and …
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Development of new dendritic ligands for copper mediated Atom Transfer Radical Polymerization (ATRP) of methyl methacrylate
… Generation 1 polypropyleneimine dendrimer DAB-(NH2)4. The first set of ligands was synthesized by reacting DAB-(NH2)4 with aromatic aldehydes such as 2-pyridinecarboxyaldhyde and 4-t-butyl benzaldehyde to form imine functionalized dendrimers. Analogous secondary amine functionalized …
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Solid-State 17O NMR as a New Probe to Study Acyl-Enzyme Intermediates
… p-N,N-dimethylaminobenzoyl-chymotrypsin (DAB-CHT), trans¬¬-¬o-methoxycinnamoyl-chymotrypsin (oMC-CHT), and trans-p-methoxycinnamoyl-chymotrypsin (pMC-CHT). At pH 7.8, the three acyl-enzyme intermediates were found to undergo hydrolysis (deacylation) with the following rate constants: …
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Novel gene delivery systems for brain targeting
… diaminobutyric polypropylenimine (DAB) dendrimers and evaluated their brain targeting efficiencies in vitro and in vivo. Transferrin- and lactoferrin- bearing DAB dendriplexes led to a 2-fold and 6.4-fold increase in gene expression in the brain respectively, as compared to …
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Beeinflussung der akuten Entzündung durch Gentianaviolett, Eosin und Unguentum polyenthylenglycoli
… Eosinlösung 0,5 und Polyethylenglykolsalbe DAB . Die akute Entzün-dung wurde bei den Probanden mittels eines standardisierten Hautirritationstests mit Natriumlaurylsulfat über zwei Wochen provoziert. Im selbem Zeitraum fand nach jeder Irritation die Behandlung mit den Präparaten an den …
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Análisis, diseño y construcción de un proveedor de bus para sistemas de distribución en corriente continua domésticos
… 4 se realiza un estudio del Dual Active Bridge (DAB) de forma análoga al que se hace para el convertidor reductor síncrono. En este capítulo se estudian en primer lugar las características del DAB y su mecanismo de conmutación suave. Se propone una modificación del procedimiento de diseño …
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Single-phase vs. Three-phase High Power High Frequency Transformers
… and three-phase Dual Active Bridge Converter (DAB1 and DAB3) topologies with single and three-phase isolating transformers are selected for the transformer comparison. Design optimization of power transformer has been studied and simplified models have been built for the single and three-phase …
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A flying capacitor multilevel dual-active bridge converter for interfacing high voltage in more-electric aircraft
… buses and storage. While the dual-active bridge (DAB) converter has traditionally served this role, its reliance on single high-voltage devices constrains achievable switching frequency, resulting in bulky magnetics. The addition of a flying-capacitor multilevel (FCML) converter provides a …
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Die EG-Produkthaftpflicht-Richtlinie vom 25. Juli 1985
… Aus der Voraussetzung der Transformation folgt, daB die nationalen Gerichte die Zustandigkeit haben, das neue Produkthaftpflichtrecht zu interpretieren. Selbst wenn der Wortlaut der Richtlinie unverandert in die verschiedenen einzelstaatlichen Rechte Ubernommen wlirde, besteht die Gefahr, daB die …
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Design and Control of a Compact 7.2 kW GaN-Based Bidirectional Isolated On-Board Charger (OBC)
… for non-resonant isolated Dual Active Bridge (DAB) converters. This method achieves full Zero Voltage Switching and 75% quasi-Zero Current Switching across a wide range of input and output voltages while minimizing inverse power flow and significantly reducing di/dt in power loops. The proposed …
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Development of spiral ganglion cells in syrian golden hamster
… In the youngest age group studied (6 DAB), at the light microscopic level, there appear to be decreases in cell number per viewing field and cell density which was suggestive of apoptosis. At the electron microscopic level, there were apparently "apoptotic bodies" observed only in the …
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