Auflistung nach Titel
Anzeige der Dokumente 8209-8228 von 8314
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X-ray absorption spectroscopy investigation of structurally modified lithium niobate crystals
(2009-01-19)The type and concentration of impurity centers in different valence states are crucial for tuning the photorefractive properties of doped Lithium Niobate (LN) crystals. X-ray Absorption Spectroscopy (XAS) is an appropriate ... -
X-ray analysis of a complete sample of galaxy clusters
(2016-03-30)Modern cosmology tries to trace the history and predict the future of our Universe. Great achievements have been made by the discovery of the accelerated expansion, the claim for Dark Matter and Dark Energy, the detection ... -
X-Ray Studies of Galaxy Clusters and Groups: Gas Properties in the Exceptional Cases of Faint Outskirts, High Redshift and a Merging Event
(2018-01-26)The history and evolution of the universe, the understanding of the formation of structures and the investigation of a wealth of astrophysical phenomena are the topical subjects in present-day galaxy cluster physics and ... -
X-rays from Irregular Dwarf Galaxies: The Connection between Coronal Gas and High Energetic Stellar Events
(2005)Radio observations of irregular dwarf galaxies (dIrr) in the 21 cm-line emission reveal cavities in their interstellar medium which are denoted as holes, bubbles or shells. The origin of these structures is still a matter ... -
Xenosialitis modulates the function of the Alzheimer’s disease associated SIGLEC3 in human THP1 macrophages
(2018-03-26)Chronic inflammation is an undisputed feature of late onset Alzheimer’s disease (LOAD). Activated microglia,found around amyloid beta (Aβ) plaques are implicated as the source of inflammation. However they are incapable ... -
The YES assay as a tool to analyse endocrine disruptors in different matrices in Vietnam
(2012-11-16)Endocrine disrupting compounds (EDCs) or endocrine disruptors have been a global concern for many years due to their negative impact on wildlife and human health. The main sources of EDCs in the environment are humans and ... -
Yet Another “Decipherment” of the Isthmian Writing2 System
(2020-02-12)The qW << 0:1 condition hypothesis is formulated as an estimating quick test for the feasibility of a structurally unique and therefore uncontroversial decipherment
of a given morpho-phonographic ... -
Yield effects of selected agronomic innovation packages in maize cropping systems of six countries in Sub-Saharan Africa
(2018-05)Implementation of suitable innovation packages into cropping systems is required to address the issues of food security and improvement of the crop yield in Sub-Saharan Africa. However, quantification of the effects of ... -
Yield, productivity and technical gaps that limit the cotton agricultural production system in the Colombian Caribbean
(2022-03-29)This thesis contributes to understanding factors related to production situations in agricultural systems of the Colombian Caribbean using decision analysis. Decision analysis has numerous advantages when it is used for ... -
Young stellar clusters throughout the Galaxy and the interaction with their molecular environment
(2014-02-28)Stars are born within dense clumps of giant molecular clouds, constituting young stellar agglomerates known as embedded clusters. Once the parental gas is expelled through stellar feedback, they evolve into bound open ... -
Youth aspirations, perceptions of farming, and migration decisions in rural Sub-Saharan Africa: Further empirical evidence from Ethiopia
(2020-05)The study discusses the aspirations and preferences of youth in rural sub-Saharan Africa using a large-scale SMS-based survey data and complements it with an investigation on the causal effects of adolescent aspirations ... -
Yucatec Maya Language on the Move: A Cross-disciplinary Approach to Indigenous Language Maintenance in an Age of Globalization
(2019-08-21)This dissertation discusses the language maintenance of Yucatec Maya in the contemporary world characterized by intensified global interactions. Manifested in the increased mobility of speakers and the intensive use of ... -
Yukawa Couplings from D-branes on non-factorisable Tori
(2018-08-15)In this thesis Yukawa couplings from D-branes on non-factorisable tori are computed. In particular intersecting D6-branes on the torus, generated by the SO(12) root lattice, is considered, where the Yukawa couplings arise ... -
Zahlklassifikatoren in Hieroglyphen-Inschriften der Klassischen Maya-Kultur: Beobachtungen zu T87
(2003)In der vorliegenden Notiz werden die syntaktischen und morphologischen Strukturen von Zahlklassifikatoren im sprachlichen und hieroglyphenschritlichen Kontext am Beispiel des Zeichens T87 für das Wort TE' untersucht und ... -
Zahnbehandlungsangst: Die Ängste der Patienten und mögliche Wege der Minderung
(2007)Die Zahnbehandlung wird von vielen Patienten als unangenehme und bedrohliche Situation wahrgenommen. Erfährt ein Patient diese Empfindung wiederholt und verstärkt, so spricht man von Zahnbehandlungsangst. Um dem Patienten ... -
Zahnschmelzmikrostrukturen südamerikanischer Huftiere
(2005)Aus der Gruppe der südamerikanischen Ungulaten wurde der Zahnschmelz hauptsächlich von Molaren von insgesamt 41 Gattungen und einer Unterfamilie der Ordnungen Litopterna, Notoungulata und Astrapotheria untersucht. Kennzeichnend ... -
Zeb2 is essential for terminal differentiation of multiple hematopoietic lineages
(2016-01-14)The differentiation of hematopoietic stem cells (HSC) into specialized blood cells is tightly controlled by a complex network of transcription factors (TF). The zinc finger E-Box binding TF Zeb2 is known to govern the ... -
Zebrafish as a Model Organism to Study the In Vivo Role of G-Protein Coupled Receptor 17 in Myelination
(2019-02-26)The sheathing of axons with myelin by oligodendrocytes constitutes a necessity for sufficient and rapid nerve conduction within the vertebrate central nervous system (CNS). However to date, the complex molecular mechanisms ... -
Zeeman Measurements using SO (10-01) Transition and Heterodyne Observations towards the W51 Region
(2003)Understanding the star-forming procedure is one of the most important topic in astrophysics. One of the most unexplored fields in the star-forming theories is magnetic field. Magnetic field is believed to play an important ... -
Zeitaufgelöste Femtosekunden-Infrarotspektroskopie an einem Ferracyclobutadien zur Aufklärung des ultraschnellen photoinduzierten Ligandenaustauschs
(2017-04-19)Diese Arbeit hat es sich zum Ziel gesetzt, die ultraschnellen Primärprozesse nach der optischen Anregung des Tricarbonyl-Ferracyclobutadien-Komplexes [Fe{κ2-C3(NEt2)3}(CO) ...
