Search Results (30)
Extension of the range of primary vacuum calibration methods with the use of nonevaporable getters
Measurement of ultrahigh vacuum (UHV) and extremely high vacuum (XHV) is important in many advanced research and technology fields such as: equipment for surface analysis, particle accelerators, simulation of interstellar space, processing of advanced semiconductors, electron tubes, FE displays, etc. For traceable calibrations of UHV and XHV gauges we need …
Synthesis and Characterization of Aluminium Foams
Aluminium foams are prospective class of cell materials that offer a variety of applications in fields such as lightweight structures or crash-energy management. Due to interesting combination of physical and mechanical properties, such as high stiffness at low density, high impact energy absorption, flame and heat resistance, sound absorption, aluminium …
The synthesis and characterization of glass–ceramics based on ternary system MgO-B2O3-SiO2
The past fifteen years has seen the rapid development of various wireless communication devices, which operate at microwave or milimeterwave frequencies (mobile phones, wireless local-area networks (LAN), Bluetooth, etc.). At the same time, this progress has stimulated the development of new materials and process technologies, which enable the size reduction …
Synthesis and Characterization of Bi12SiO20 Thin Films Prepared by Sol-gel Method
The sillenites Bi12MO20 (M = Si, Ge, Ti, Pb, Mn, B1/2P1/2) have been recognised as promising bulk materials for electronic applications because their dielectric properties (5.5 GHz: ε = 37.4 - 41, τf = -19 – (-84) ppm/K, Q x f = 800 - 8100 and Tsin = 680 - …
Comparative View into Protease - Inhibitor Interaction
Interactions between macromolecules are the basic events of life. Their characterization is thus a key to understanding the physiology and the underlying specificity of these events. Not only understanding of the final states (where the molecules get closest together), also understanding of the course of approach is mandatory to gain …
Selenocompounds in selenium-enriched plants determined by spectrometric methods
Selenium (Se) has been demonstrated to be an essential trace element for maintenance of animal and human health. Se is incorporated into proteins to make selenoproteins, which are important antioxidant enzymes. The antioxidant properties of selenoproteins help to prevent cellular damage caused by radicals. Radicals are natural by-products of oxygen …
Hydrogen absorption in Ti-Zr-Ni alloys
Our research focused on the formation of Ti40Zr40-xNi20Cux (x=3, 5), Ti45Zr38-xNi17Cux (x=3, 5), Ti53Zr27-xNi20Cux (x=3, 5) and Ti58Zr24-xNi18Cux (x=3, 5) icosahedral (i-phase) quasicrystals by three different techniques and their subsequent characterization and high-pressure hydrogenation. The quasicrystals of this system are thermodynamically stable and they have a relatively good affinity for …
The synthesis and characterization of BaO-rich phases within the BaO-Nb2O5 and BaO-WO3-Nb2O5 systems
This PhD thesis presents experimental results from the synthesis, crystal structure and microwave dielectric characterization of BaO-rich phases within the BaO-Nb2O5 and BaONb2O5- WO3 system. I was primarily interested in two compounds with unknown crystal structure, i.e., the binary Ba4Nb2O9 and the ternary Ba6Nb2WO14, which lie on a common virtual …
Development of an alternative approach to membrane protein structure determination based on the analysis of local rotational conformational spaces
The problem of structure determination of membrane proteins is addressed with a new combination of site-directed spin labelling (SDSL) electron paramagnetic resonance (EPR) spectroscopy and structure modelling of a protein and its conformational spaces. This new approach is aimed at structural characterization of membrane proteins and intrinsically disordered proteins. In …
Self-assembly properties of Mo6S9-xIx nanowires with different (bio)materials
This thesis presents a study of different nanoscale functional properties of Mo6S9-XIx nanowires and demonstrates a straight-forward functionalization route based on self-assembly. In order to ascertain their basic functional properties, studies of dispersion and electromobility under different conditions were performed. It was found that the nanowire bundles, due to their …