41 documents found

Article / Chapter
CC BY 4.0
2020-03-23

Harsh Sliding Wear of a Zirconia Ball against a-C:H Coated CoCrMo Disc...

aus: Lubricants
The a-C:H (amorphous carbon-hydrogen) films belong to the family of DLC (diamond-like carbon) coatings. The a-C:H coating was deposited on medical grade CoCrMo substrates by plasma-assisted chemical vapor deposition (PA-CVD) using benzene as gaseous precursor. Benzene offers an aromatic structure, which...
Basel: MDPI, 2020-03-23
Dissertation
All rights reserved
2019-06-19

Integration von nanoskaligen III-V Halbleiterstrukturen auf Silizium für...

Tandem-Absorberstrukturen bestehend aus ternären III-V-Halbleiter-Nanodrähten (ND) als obere Teilzellen und Si als untere Teilzelle besitzen ein hohes Potential für kostengünstige, hocheffiziente Photovoltaik und solare Wasserspaltung. Ziel dieser Arbeit ist es den Weg zu einem solchem Tandem zu ebnen,...
Article / Chapter
CC BY-NC-ND 4.0
2019-04-13

Electrochemical deposition of silicon from a sulfolane-based electrolyte:...

As a low-cost, non-volatile, highly polar and chemically stable solvent, sulfolane has a high implementation potential for electroplating in organic media. This is the first report of the electrodeposition of silicon from sulfolane-based electrolytes. Voltammetric and chronoamperometric techniques, coupled...
Amsterdam [u.a.]: Elsevier Science, 2019-04-13
Dissertation
CC BY-NC-ND 3.0
2018

Legume chemistry and the specificity of the pea aphid (Acyrthosiphon pisum)...

The pea aphid (Acyrthosiphon pisum) is a complex of at least 15 genetically different host races that are native to specific legume plants but can all develop on the universal host plant Vicia faba. Despite much research, it is still unclear why pea aphid host races can accept and colonize their native...
Dissertation
CC BY 3.0
2018

Development and evaluation of freeform surface descriptions

In recent years, great efforts can be observed in the community of optical design to use the additional degrees of freedom afforded by freeform surfaces in optical systems. In particular one important question at the beginning of the concept and design of a freeform system is the decision how to mathematically...
Lecture / Speech
CC BY 4.0
2018

Deep Learning Approach for Mapping Arctic Vegetation using Multi-Sensor...

Land cover datasets are essential for modeling Arctic ecosystem structure and function and for understanding land–atmosphere interactions at high spatial resolutions. However, most Arctic land cover products are generated at a coarse resolution, and finding quality satellite remote sensing datasets to...
Movie / Video
Lecture Resource
All rights reserved
2017-11-24

6. Vorlesung (24.11.2017): Ertragbare Werkstoffbeanspruchung

Vorlesungsinhalte: Nachtrag: Berechnung der Biegebeanspruchung; Berechnung der Torsionsbeanspruchung; Torsionsspannung; Polares Flächenträgheitsmoment; Einfluss kontruktiver Kerben; Rechnerische Verfahren; Formzahlen; Eigenschaften mechanischer Koppelstellen; Flächenpressung; Kriterien des Versagens...
Book chapter
All rights reserved
2017-11-02

Influence of flowability and MAH-content of maleated polyolefines on rheological...

Wood plastic composite (WPC) is an important representative of the group of natural fibre reinforced plastics. In order to bond the polar wood fibres chemically to the nonpolar polymer matrix, coupling agents are used. The most important group of coupling agents for WPC are maleated polyolefins in which...
Book
All rights reserved
2017

Monitoring zu den Folgen von lokalen Klimaveränderungen auf die Schutzgüter...

aus: Texte
Jena: AG Polar- & Ornitho-Ökologie, Institut für Ökologie, Friedrich-Schiller Universität Jena, 2017
Dissertation
All rights reserved
2017

NADPH:Protochlorophyllide Oxidoreductase (POR) : advanced insight into the cat ...

NADPH:protochlorophyllide oxidoreductase (POR), EC 1.3.1.33, is a key enzyme in the biosynthesis of chlorophyll in all organisms with oxygenic photosynthesis. POR catalyzes the reduction of protochlorophyllide (PChlide) to chlorophyllide (Chlide) by the absorption of light in the presence of the cofactor...
Dissertation
2015-08-31

Beitrag zur digitalen Signalverarbeitung in der Mikrofontechnik

The properties of a microphone are significant for the quality of the recording and transmission of an acoustic signal. This report presents possibilities for influencing the linear and the spacial characteristics of microphones with digital signal processing. The first step for this is the analog...
Dissertation
2015-06-18

Discovering the cover : molecular imaging of Populus trichocarpa leaf surface ...

All terrestrial plants are covered by cuticle and its most outer layer is called epicuticular waxes (EWs). This layer forms an actual leaf surface, therefore is a first line of defence against any environmental stress. Despite its crucial role in plant survival, for decades leaf surface was studied...
Dissertation
2014-03-20

Beiträge zu Appliklationen von 4-Hydroxy-1,3-thiazolen

Eine Reihe neuer und funktioneller Chromophore/Fluorophore auf der Basis von 4-Hydroxy-1,3-thiazolen wurde synthetisiert. Aus diesem Portfolio an Derivaten wurden Anwendungen entwickelt und die Verbindungen hinsichtlich ihrer Verwendung als Sensoren und Antioxidantien evaluiert. Innerhalb des Bereichs...
Dissertation
2013-09-18

Charakterisierung der elektronischen und chemischen Eigenschaften reiner...

Indium nitride (InN) is a III-V semiconductor and due to its low band gap and good electron transport properties a promising candidate for applications in ultrafast transistor and optoelectronic devices. In this context, not only the bulk but also the surface properties of the material are of major...
Dissertation
2013-07-09

Synthese und Funktionalisierung von Fulleren C60 und seinen Derivaten für...

The modification of C60 and its derivatives with polar side chains to improve the solubility in polar and aqueous medium is of significant importance for biological and medical applications. Although fullerene derivatives have been used in numerous biological systems their interaction mechanism...
Journal
CC BY 4.0
2013

Lubricants : open access journal

Basel: MDPI, 2013
Dissertation
All rights reserved
2012-11-12

The Chukchi region : Arctic ocean : tectonic and sedimentary evolution

The Arctic Ocean is an area of increasing interest for research. Variations in the sensitive polar ecosystem influence the environment of the global Earth system and climate change. Therefore, reviews of modern Arctic Ocean system thereby provide the basis to interpret the Arctic Ocean evolution through...
Dissertation
2012-06-18

Combining X-ray and optical/NIR data to study GRBs and their host galaxies

Diese Arbeit widmet sich dem Thema der Gammastrahlen-Bursts (GRBs), einem der z.Z. faszinierendsten Forschungsfelder in der Astrophysik. Gammastrahlen-Bursts sind Blitze energiereicher Strahlung, die am Himmel aus zuf¨alligen Richtungen zu zuf¨alligen Zeiten kommen. W¨ahrend ihres Auftretens ¨uberstrahlen...