Browsing Naturwissenschaften, Mathematik und Informatik by Title
Now showing items 4672-4691 of 5748
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Struktur und Dynamik des Feinwurzelsystems von tropischen Bergwäldern in Abhängigkeit von der Meereshöhe in Südecuador
(2006-08-08)In a tropical montane rainforest in the South of Ecuador the effect of increasing altitude on structure and dynamics of fine root system was assessed. Fine root bio- and necromass, ... -
Struktur und Dynamik kleinskaliger Magnetfelder der Sonnenatmosphäre
(2003-07-25)Two-dimensional spectrograms were obtained at the Vacuum Tower Telescope, Tenerife, in order to study the structure of small scale magnetic fields on the Sun. The speckle reconstruction ... -
Struktur und Dynamik von zwei Buchenurwäldern in der Slowakei
(2006-12-11)Two virgin beech forest reserves in Slovakia were investigated silviculturally. The stands were characterized by soil, floor vegetation and radiation. Diameter distributions, stand density ... -
Struktur und Fluktuationen festkörpergestützter Phospholipidmembranen
(2003-12-18)In this work solid supported membranes are studied by X-ray reflectometry. Solid supported phospholipid membranes are model systems for biological membranes and are widely used to study ... -
Struktur und Umwandlungen von Eisphasen in Gegenwart der Gase Helium, Neon und Argon
(2003-04-14)Water in its crystalline phases is an ideal system to investigate the interactions of water molecules with each other as well as with various gases. Condensed water exists in a variety of ... -
Struktur und Ursprung starker Magnetfelder am Boden der solaren Konvektionszone
(2001-09-14)The solar magnetic activity shows a cycle with a mean period of 11 years, which is clearly visible in the variation of the number of sunspots. The magnetic field, which leads to sunspot ... -
Struktur, Wachstum und Phasenumwandlungen dünner Eisen-Palladium Schichten
(2010-09-06)Iron-Palladium is a modern functional material, which shows a great variety of physical effects that can be used in many different technical applications. In this work, the influence of ... -
Struktur- und Funktionsanalysen des Pax4-Promotors
(2002-04-05)Pax4 is a member of the Pax family of transcription factors with restricted expression and essentia l functions in the developing pancreas. Pax4 deficient mice do not develop pancreatic ... -
Struktur-Eigenschaftskorrelationen in den silberionenleitenden Systemen AgI-AgMxOy (M=P,Cr,Mo)
(2003-07-22)Silver iodide silver oxyacid salts of the general composition AgI-AgMxOy (M=V, Nb, Ta, Cr, Mo, W,.....B, Ge, P, As, S, Se, Te) are important model substances for the investigation of ... -
Struktur-Funtionsbeziehung in den spleißosomalen Proteinen des U4/U6•U5 tri-snRNP
(2007-01-29)Subject of this thesis is the splicesosmal U5-particle. The functional relationship of the proteins is investigated by means of limited proteolysis and spectroscopy. Due to the splicesosome's ... -
Die Strukturabhängigkeit der Festkörperfluoreszenz bei Phosphanylanthracenen
(2008-05-30)Four major aims have been pursued in the course of this thesis: 1. Synthesis and charactarization of 9-bromo-10-phosphanylanthracenes. 2. Investigation of the relationship between crystal ... -
Strukturanalyse von antibiotischen Peptiden in Lipidmembranen mittels Röntgenreflektivität
(2005-07-20)This thesis concerns structure investigation of Peptid/Lipid model systems by X-ray reflectivity. As a result of this work the electron density profiles in direction perpendicular to the ... -
Strukturaufkälrung von Natrium-Solvens-Clustern durch IR-anregungsmodulierte Photoionisatiosnspektroskopie
(2012-10-09)In this work the method of IR-excitation modulated photoionisation mass spectroscopy is introduced. As a preparation, it is shown in a photoionization study that at least two classes of isomers exist for larger sodium doped ... -
Strukturaufklärung der Phenalinolactone und Beiträge zur Biosynthese der Hexacyclinsäure
(2004-04-27)This work concentrated on biosynthetic studies as well as the isolation and structure elucidation of natural substances of streptomycetes. In line with a cooperation with the workgroup of ... -
Strukturbildung und Rauigkeiten an Grenzflächen des Ni-Ag-Legierungssystems
(2008-05-30)The systematic alteration of surface and interface structure is of special interest particularly in the field of thin film and nanotechnology where either smooth or specifically patterned ... -
Strukturbildung und Turbulenz
(2005-06-24)This work makes a contribution to the understanding of turbulent convection flows by numerically studying Rayleigh-Bénard convection in a fluid layer heated from below between two rigid ... -
Strukturdynamik wasserhaltiger Aggregate in Überschallexpansionen
(2014-07-08)Isolated molecular clusters can be investigated by Fourier transform infrared spectroscopy of supersonic expansions. It is shown how multi slit nozzles of different geometries can be used both for the elucidation of the ... -
Struktureigenschaften und molekulare Dynamik flüssiger Ethylenglykol-Oligomere und ihrer Mischungen mit Wasser
(2007-08-14)The dynamics of chain isomerization in melts of ethylene glycol oligomers with molar masses between 62 and 600 g/mol are studied by means of broadband ultrasonic absorption measurements in ... -
Strukturelle Charakterisierung der C-terminalen Domäne des spleißosomalen DExD/H-Box Proteins hPrp22
(2008-02-26)Splicing of pre-mRNA is one of the most dynamic processes in eukaryotic cells. In addition to the U snRNAs, there is a multitude of proteins involved in the splicing cycle. Some of them are mobile factors; others are ...