Load bearing reinforced concrete structure of flat house

Práce se zabývá statickým řešením nosné železobetonové konstrukce bytového domu. Obsahuje posouzení spodní stavby jako vodonepropustné stavby z betonu – „bílé vany“. Objekt je založen pod úrovní hladiny podzemní vody. Nosnou konstrukci tvoří základová deska, stěny a sloupy. Prvky ve styku s vodou jsou posuzovány dle I. mezní stavu – únosnosti, II. mezního stavu použitelnosti- omezení šířky trhlin od vynuceného namáhání a omezení šířky trhlin od zatížení.The main purpose of thesis is a static solution of load bearing reinforced concrete structure of flat house. The work contains an assessment of waterproof concrete building. The object is built under the groundwater level. Supporting structures are concrete slab, walls and columns. An assessment of these structures is realized in terms of first critical state- carrying capacity and second limit state- limitation of crack widths.

A toolbox for miRNA analysis

AbstractMicroRNAs (miRNAs) are small regulatory RNAs, which mediate selective repression of gene expression. miRNAs play important roles in many natural and pathological processes. Numerous tools were developed for their detection and functional analysis. There are many excellent articles covering different areas of miRNA biology in detail. At the same time, I think there are many colleagues who face a miRNA-related research problem and would appreciate having an introductory general overview of tools for miRNA analysis, which would help them in considering available options. Accordingly, this review provides an elementary roadmap to navigate among available tools for miRNA analysis. The most common problems and errors observed in miRNA research are also discussed

Auxiliary Output to Text-Based Display for Console Applications Running at Personal Computers with Windows Operating System

Tato bakalářská práce se zabývá návrhem a realizací kompaktního modulu s jednočipovým mikrokontrolérem a grafickým LCD displejem, který plní funkci alternativního zobrazovacího zařízení pro počítačové embbeded systémy, kde není nutné nebo vhodné použít grafickou kartu a VGA či jiný displej s vysokým rozlišením. Realizovaný modul přijímá data textového výstupu libovolné aplikace z osobního počítače pomocí univerzálního sériového rozhraní nebo sériového portu RS232. Přijatá data následně zobrazí na grafickém LCD displeji a uchová do dočasné paměti mikrokontroléru. Modul může být napájen z rozhraní USB nebo ze zdroje počítače.This Bachelor´s thesis deals with a design and realization of compact module with a single-chip microcontroller and graphics LCD display as alternative display equipment for embedded computer, in which a video card and VGA or an another high resolution display is not necessary or acceptable. The realized module receives data from text output of any application running on personal computer via universal serial bus or RS232 interface. Then the received data are displayed in the LCD and saved into temporary memory of the microcontroller. The module can be supplied using USB interface or power supply of the computer.

Ethylene-octene copolymer/graphite composites: Electrical and thermal conductivities and flame resistance

A series of ethylene-octene copolymer (EOC) composites have been prepared by melt-mixing with different weight ratios of expandable graphite filler (0-50% by weight). Electrical conductivity [both alternating current (AC) and direct current (DC)] and thermal conductivity studies were carried out. Effect of filler loading and frequency on electrical conductivity was studied. DC conductivity has increased from 1.51x10-13 Scm-1 to 1.17x10-1 Scm-1. Percolation threshold by DC and also AC methods was observed at about 16 vol. % of the filler. Real part of permittivity was found to be decreasing with increase in frequency while conductivity was increasing. Thermal conductivity was also found to be increasing gradually from 0.196 to 0.676 Wm-1K-1 which is about 245% increase. Graphite not only increases the electrical and thermal conductivities but at and above 40 wt. %, also acts as a halogen-free, environmental friendly flame retardant. Horizontal burn rate was studied in detail with interesting results. Initially the addition of graphite increases the horizontal burn rate but above 35 wt. % of graphite the burning speed decreases. Shore-A hardness of EOC/graphite composites shows that even with high graphite loading, the hardness is increased from about 50 to 68 only so that the rubbery nature of the composite is not affected very much.P(ED2.1.00/03.0111

High-temperature study of radiation cross-linked ethylene-octene copolymers

Three ethylene–octene copolymers (EOC) with a wide range of octene content (17, 30, and 38 wt%) and with the same melt flow index of 1 g/10 min were cross-linked by e-beam radiation (in range 30–120 kGy). The testing methods comprised of rheology, a high-temperature creep test, an analysis of the gel content, and a dynamic mechanical analysis (DMA) test. It was discovered that copolymers with a high octene content attain a higher level of cross-linking density. Cross-linking influenced properties below Tm only marginally as seen from the DMA results. However, the properties above Tm were highly influenced as detected by high-temperature creep and rheology. Above Tm, without the presence of crystals, only the chemical bonds holding the amorphous chains together manifested a gradually decreasing creep at 150 °C with an increasing irradiation level. The loss factor (tanδ at 0.1 Hz) at 150 °C revealed a decreasing trend (or higher cross-linking level) with an increasing octene content. High-temperature results were supported by an increasing gel content with increasing octene content. Samples irradiated to 30 kGy dissolved completely in xylene but showed significantly changed rheological characteristics indicating only an increase in the molecular weight and branching. Analysis according to the Charlesby–Pinner equation revealed increased cross-linking to the scission ratio G(X)/G(S) for EOCs with a higher octene content. While the q0 value which relates to cross-linking changed only slightly, a significant decrease in the p0 value which relates to chain scission was discovered. © 2016, Springer-Verlag Berlin Heidelberg.Internal Grant Agency of the Tomas Bata University in Zlin [IGA/FT/2016/009

Polypropylene/Organoclay Nanocomposites Prepared by Supercritical CO2 Assisted Extrusion Process

Polypropylene (PP) nanocomposites were prepared by melt intercalation in an intermeshing co-rotating twin-screw extruder with the assistance of supercritical CO2 injection. The effect of molecular weight of PP-MA (maleic anhydride modified polypropylene) on clay dispersion and mechanical properties of nanocomposites were investigated. After injection molding, the tensile properties and impact strength were measured. The best overall mechanical properties were found for composites containing PP-MA with the highest molecular weight. The basal spacing of clay inthe composites was measured by X-ray diffraction(XRD). Nano-scale morphology of samples was observed by transmission electron microscopy (TEM). The crystallization kinetics was measured by differential scanning calorimetry (DSC) and by optical microscopy at a fixed crystallization temperature. For well dispersed two-component system, PP- MA330k/clay, the crystallization kinetics and the spherulite size remained almost unchanged and the impact strength decreased with increasing the clay content. On the other hand, the intercalated three component system, PP/PP-MA330k/clay, containing some dispersed clay as well as the clay tactoids, showed much smaller size of spherulites and a slight increase in impact strength with increasing the clay content. The influence of supercritical CO2 on mixing was evaluated together with the effect of initial melting temperature. Increasing initial melting temperature causes gradual decrease in bulk cristallization kinetics with exception of the 240-260°C temperature range for system without CO2. Optical microscopy revealed large number of small spherulites for system without CO2 after initial melting at 250°C. After 28 min of initial induction period of crystallization many small spherulites appeared in the vicinity of large spherulite for the system with CO2 indicating beginning of homogenous nucleation.P(ED2.1.00/03.0111),

Polypropylene/Organoclay Nanocomposites

Polypropylene (PP) nanocomposites were prepared by melt intercalation in an intermeshing co-rotating twin-screw extruder. The effect of molecular weight of PP-MA (maleic anhydride modified polypropylene) on clay dispersion and mechanical properties of nanocomposites were investigated. After injection molding, the tensile properties and impact strength were measured. The best overall mechanical properties were found for composites containing PP-MA with the highest molecular weight.P(ED2.1.00/03.0111),

Agglomeration of ZnS nanoparticles without capping additives at different temperatures

ZnS nanoparticles were precipitated in diluted aqueous solutions of zinc and sulphide ions without capping additives at a temperature interval of 0.5–20°C. ZnS nanoparticles were arranged in large flocs that were disaggregated into smaller agglomerates with hydrodynamic sizes of 70–150 nm depending on temperature. A linear relationship between hydrodynamic radius (R a ) and temperature (T) was theoretically derived as R a =652 - 2.11 T. The radii of 1.9–2.2 nm of individual ZnS nanoparticles were calculated on the basis of gap energies estimated from their UV absorption spectra. Low zeta potentials of these dispersions of −5.0 mV to −6.3 mV did not depend on temperature. Interactions between individual ZnS nanoparticles were modelled in the Material Studio environment. Water molecules were found to stabilize ZnS nanoparticles via electrostatic interactions.Web of Science12331731

Gentrification, immigration and community cohesion in Melbourne's multicultural north

Executive summary: This report analyses processes of social change affecting two multicultural suburbs in Melbourne’s north, Coburg and Fawkner, focusing on factors that impact on community cohesion. The Moreland Council (2006, 2011) has identified that national trends of rising housing costs and spikes in unemployment disproportionately affect culturally diverse communities. This report seeks to contribute to an in-depth understanding of these issues, drawing on existing demographic data as well as residents’ perceptions. The report is based on ABS data, interviews and focus group discussions with residents and local service providers, and participant observation in the neighbourhoods. It provides a brief social profile of each suburb before presenting the narrative data gleaned through this project. The report focuses on the issues of gentrification, immigration, employment, housing and community cohesion in the two suburbs. The report makes the case that these two suburbs share some broad experiences of social change:•    The de-industrialisation of Melbourne’s former industrial heartland for textiles, footwear, food and auto manufacturing.•    The rapid increase in housing costs across Melbourne in the context of a growing population.•    Increasingly skills-focused immigration in the context of a labour market dominated by service jobs.•    Socio-demographic transitions (differently affecting the two suburbs), including: the ageing of established migrant communities; the influx of new migrant groups; and gentrification.•    Relatively harmonious inter-ethnic and community relations.•    A relative lack of new public infrastructure including public transport, public housing and public education facilities, with some recent investment in recreation facilities

Athletic excercises involvement in Physical Education at the Primary School level

katedra: KTV; přílohy: DVD; rozsah: 88 s.The aim of the diploma thesis was to create a volume of athletic setting-up exercises and games, intended for development of motoric abilities and improvement of technic of the athletic events in classes of physical training. DVD with the volume of the setting-up exercises and games is attached. The diploma thesis deals with results of the public inquiry given to gym masters of elementary schools and should be of service to gym masters during creating of classes of physical training. Furthermore, the thesis should be conductive to conditioners and instructors of athletics clubs to gimmick up classes of athletic trainings.Hlavním cílem této diplomové práce je vytvoření zásobníku průpravných atletických cvičení a her, určených k rozvoji pohybových schopností a ke zdokonalení techniky atletických disciplín ve školní tělesné výchově. Sborník her a cvičení je součástí videa na DVD a v textové části přílohy diplomové práce. Práce obsahuje výsledky anketního šetření, předkládaného učitelům tělesné výchovy na základních školách. Diplomová práce by měla sloužit především učitelům tělesné výchovy na základních školách jako pomocník při tvorbě hodiny s atletickou průpravnou náplní. Dále by měla posloužit i trenérům či cvičitelům atletických klubů k zatraktivnění atletických tréninků mládeže