National Repository of Grey Literature 62 records found  beginprevious34 - 43nextend  jump to record: Search took 0.00 seconds. 
Surface modification by means of metallic and polymeric nanoparticles
Steinhartová, Tereza ; Hanuš, Jan (advisor) ; Matoušek, Jindřich (referee)
The theoretical part deals with basic characteristics of low-temperature, low-pressure plasma. It also describes the principles of preparation of polymer and nanocomposite films using this type of plasma. It further explains the basic principles of methods used to characterize our samples. The experimental section shows a technology to produce hard polymeric coatings with metal (Cu) nanoparticles (NPs) fabricated by gas aggregation source (GAS). This approach has an important advantage that Cu concentration and matrix properties can be controlled independently. Characterization of the films in terms of chemical composition, morphology, optical and mechanical properties is described here alongside with description of Cu NPs production using GAS with variable aggregation length. The a- C:H matrix was deposited in a mixture of Ar and n-hexane on the substrates placed on a RF electrode. The beam of the NPs was normal to the substrate plane. In this arrangement it was possible to control hardness of the films and by operational parameters of the GAS also the amount of the NPs in the film. In the last section fabrication of nanocomposite films of titanium and nylon NPs is shown. Powered by TCPDF (www.tcpdf.org)
Study of the interaction of nanocomposite films with plasma
Steinhartová, Tereza ; Hanuš, Jan (advisor) ; Kousal, Jaroslav (referee)
The theoretical part deals with basic characteristics of low-temperature, low-pressure plasma. It describes the principles of preparation of nanocomposite films using this type of plasma and also the etching process in chemically active plasma. It further explains the basic principles of methods used to characterize our samples. The experimental part describes the process of optimalization of chemically active plasma ($O_2/Ar$) employed for etching of plasma polymer films. After finding suitable etching parameters several types of films were prepared. First, films of plasma polymer and then nanocomposite films composed of metal and plasma polymer. Afterwards the samples were treated in defined conditions of oxygen plasma. The aim was to study the physico-chemical properties of these films, especially their chemical composition using X-ray photoelectron spectroscopy, and wettability. Attention was given to the change of the water contact angle as a function of etching time and morphology of the pample. In case of oxygen etching ageing of the film was studied. By increasing of roughness superhydrophobic (SHF) film was prepared.
Nanoclusters coatings for biomedical applications
Divín, Radek ; Kylián, Ondřej (advisor) ; Hanuš, Jan (referee)
Title: Nanoclusters coatings for biomedical applications Author: Radek Divín Department: Department of Macromolecular Physics (110. 32-KMF) Supervisor: RNDr. Ondřej Kylián, Ph.D. Abstract: The copper nanocluster films were prepared with the aid of the gas cluster aggregation source based on the principle of material sputtering from the magnetron target to the relatively high pressure of the working gas (Ar). The nanocluster films prepared in this way were subsequently overlapped with the layer of plasma polymer deposited by RF magnetron sputtering from the nylon polymer target in the atmosphere of the working gas (Ar, 2 Pa). A repetition of this procedure enabled to prepare nanocomposite layers having a multilayer character. These layers were subsequently investigated with regard to their morphology, chemical composition, surface wettability and optical properties. The chemical composition of the surface layer formed by nanocomposite films was determined by the X-ray photoelectron spectroscopy (XPS). It turned out that the chemical surface composition of prepared nanocomposites was not markedly influenced by the presence of the Cu nanoclusters. The morphology of prepared films was studied by the scanning electron microscopy (SEM) and the atomic force microscopy (AFM), which showed that the resulting...
Airless Tires
Hanus, Jan ; Pacal, Bohumil (referee) ; Molliková, Eva (advisor)
The aim of this bachleor thesis was describing options of constructing the airless tire with inner structure, finding out its properties and comparision with conventional tire. The first part deals with the historical development of the airless tire structure. The second part describes ways to design the inner structure with focus on the honeycomb type. The comparison of airless and conventional tire properties is stated in the end of this bachleor thesis.
Analysis of the appropriateness of the data from the IMU / GNSS units
Holouš, Karel ; Hanuš, Jan
The object of the air campaign Analysis of the IMU/GNSS data and it’s suitability, was to create a sufficient amount of GPS data to analyze the appropriateness of using the IMU/GNSS data for comparison with other IMU/GNSS data recorded at the same time by the ordering client. Based on the initial request data were acquired using the installed GPS sensors, on-board navigation system GARMIN G1000 and GNSS Applanix POS/AV 410. Data acquisition was performed during a single flight in total duration of 0:58 on February 16, 2016. During this flight we performed complete set of predetermined tests during different flight regimes.\n\n
VUMOP - 1601
Hanuš, Jan ; Fabiánek, Tomáš ; Pivovarník, Marek
The object of the hyperspectral campaign VUMOP 1601 was collect a new data from areas with significant affection of soil erosion and verified of the methods from campaign VUMOP 1601. During scanning was used whole spectral range of FLIS – Flying Laboratory of Imaging Spectroscopy. Selection of locality and term for aircraft scanning was established according of phenological phases and selected species of crops.\n\n
ÚPOL Rudice – 1602
Hanuš, Jan ; Fajmon, Lukáš ; Fabiánek, Tomáš
The object of the hyperspectral campaign UPOL Rudice 1602 was collect data for estimation of soil parameters. During scanning was used sensors CASI1500 and SASI600 from FLIS – Flying Laboratory of Imaging Spectroscopy. Selection of locality and term for aircraft scanning was established according of vegetation cover status.
Assesment of a Company´s Financial Situation and Proposals for its Improvement
Hanus, Jan ; Martens, Radek (referee) ; Polák, Michal (advisor)
Bachelor thesis focuses on the assessment of the financial situation of the company AGRICOL Ltd. in the period 2009 – 2013. It uses selected methods of financial analysis to evaluating the financial situation. It provides possible solutions to eliminate deficiencies based on the achieved results and recommendations for future management of the company.
Possibilities of the external cooling of a pressure vessel in case of the accident with active zone melting
Hanuš, Jan ; Suk, Ladislav (referee) ; Martinec, Jiří (advisor)
The accident at the Fukushima Daiichi nuclear power plant has shown us that there may be situations where the applied technology will not be able to successfully cool the reactor core. These situations may occur when more elements such as supply of energy to power the pumps and diesel generators are destroyed for example by tsunami or earthquake, or other not expected natural disasters. The inability of the residual heat removal leads to the melting of core, relocation to the bottom of reactor pressure vessel (RPV) and failure of RPV. Result of this accident may be containment failure and leakage of fission products into the environment. One way to prevent this scenario may be a passive system called IVR (In-Vessel Retention) by using external cooling of RPV that retains melted core in. This system counts with flooding of RPV´s shaft by water. After natural circulation of water provides the heat transfers from the wall of RPV. The applicability of IVR for VVER 1000 reactors is still in the course of research. However it´s already clear that the submersion of RPV shaft by water will not sufficient. Other elements as suitable insulation and RPV coating which provides a more intensive heat transfer from the walls of RPV will be needed.

National Repository of Grey Literature : 62 records found   beginprevious34 - 43nextend  jump to record:
See also: similar author names
42 Hanus, Jan
8 Hanus, Jiří
11 Hanus, Josef
3 Hanuš, Jakub
8 Hanuš, Jiří
11 Hanuš, Josef
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