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Detection of signal electrons at higher pressure in the specimen chamber
Jirák, Josef ; Autrata, Rudolf ; Špinka, Jiří
The advantages of the scanning electron microscopy working at higher pressures in the specimen chamber are connected with the possibility of observation of specimens structures, which are difficultly observable without previous preparation for microscopes working with pressures in the specimen chamber under 10.sup.-2./sup. Pa. The pressure in the specimen chamber up to approx. 2000 Pa brings the possibility of observation of specimens, which release gases, specimens containing liquid phase, including wet biological preparations, reactions on the phase interfaces, etc. At higher pressures in the specimen chamber it is also not necessary - due to neutralisation of the surface negative charge by gas ions - to coat electrically non-conductive specimens by a conductive layer.
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Řízení lidí v multikulturním prostředí
Moryc, Katarzyna Małgorzata ; Dvořáková, Zuzana (advisor) ; Vávra, Radovan (referee)
The main objective of the thesis was to define and analyze key aspects of managerial work in multicultural environment, in one of the Shared Services Center department, of multinational company based in Prague, Czech Republic. Further thesis aimed to define essential competencies of the successful manager and leader driving performance of multicultural department and provides recommendations to improve managerial performance in key aspects of manager s work such as communication, motivation, performance management and cross-cultural leadership. It is argued that presence of intercultural interactions between managers and their subordinates, impacts effectiveness of the managerial performance. Thesis consists of theoretical and practical part. First part of the thesis explores theoretical concepts regarding culture, communication, motivation and leadership with respect to multicultural environment specifics. In the second part, used research methods, conducted research analysis and outcomes are presented. Further in practical part recommendation towards analyzed aspects of managerial work that would lead to higher overall department performance are defined.
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Fiscal rules in selected EU countries between 2004-2015: sensible method for consolidation of public finances or fad of politicians?
Veselý, Lukáš ; Strejček, Ivo (advisor) ; Chmelová, Pavla (referee)
The subject of fiscal rules is very topical issue. The rise of public debt in certain developed countries resulted in what is sometimes called "debt crisis". Debt of those countries which is higher than their annual gross domestic product is viewed as unpayable by some economists. The main objective of this thesis has been to prove or disprove hypothesis that the fiscal rules studied in this paper are an effective solution for public finance consolidation. This verification was based on the analysis of fiscal rules functioning in selected countries between 2004 and 2015. As per results of analysis the paper aims to give recommendations for the Czech financial constitution proposal. The actual results of inquiry proved the hypothesis. Well-chosen fiscal rules are the right way towards fiscal consolidation, provided they are observed. Fiscal rules making thus requires an emphasis to be placed on the well-formulated exit clauses altogether with prospective sanctions. The current Czech financial constitution proposal is built on the correctly picked fiscal rule type, although the reference value lacks economic sense and it would not lead, with a high degree of probability, towards fiscal consolidation.
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Tax and legal issues of real-estate business in Austria
Banctel, Kristýna ; Filipová, Vladimíra (advisor) ; Drozen, František (referee)
The purpose of this study is to compare tax and civil-law issues concerning property business in Austria and in Czech Republic in 2016 and to investigate the efficiency of the current legislation against the real estate bubble. The theoretical part of this study contains selected demographic and price statistics concerning real estate in both countries and focuses on the description of the existing law currently in effect in both compared countries. The practical part analyses tax and transactions costs that concern property trading and a comparison of possibilities of amortisations and rentability of a rented flat in both countries.
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Interspecific hybridization in Acrocephalus warblers.
Majerová, Veronika ; Reifová, Radka (advisor) ; Kotlík, Petr (referee)
Acrocephalus warblers have gone through the adaptive radiation during last severalmillion years, which gave rise to thirty one species occupying mainly Eurasia,Africa and Australia. The majority of species are morphologically very similar,however, they differ in ecological requirements, migration strategy, and song.Interspecific hybridization seems to be quite common among Acrocephaluswarblers, not only between sister species, but also between more distantly relatedtaxa. The main goal of this study was to determine whether this hybridization leadsto gene flow between species and which factors affect the rate of interspecific geneflow. For this purpose we conducted population-genetic analysis in three Europeanspecies of the Acrocephalus warblers of the subgenus Notiocichla: reed warbler (A.scirpaceus), marsh warbler (A. palustris), and blyth's reed warbler (A. dumetorum).Our results based on the analysis of sequence data from eight nuclear loci indicate,that gene flow between the studied species occurs, but only in one direction. Thegene flow is higher between genetically more related species than betweenecologically more similar species. We also estimated that the reed warbler and themarsh warbler diverged approximately 1,1 million years ago. The blyth's warblerand ancestor of the reed and marsh warbler...
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Aspects of the virtualization of higher education and its comparison in the CZ and US
Dlauhá, Dominika ; Šedivá, Zuzana (advisor) ; Pour, Jan (referee)
The topic of this thesis is the evolution of online higher education in the CZ and US, from its beginnings to its current state. Emphasis is placed on describing MOOCs and virtualization in education, ranging from technological, pedagogical and didactic aspects to legislature and finance. A survey was conducted to determine the interest in online courses at the University of Economics, Prague and experience with online learning, resulting in an outline of the future development in this area.
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INFLUENCE OF LASER CUTTING AND PUNCHING ON MAGNETIC PROPERTIES\nOF ELECTRICAL STEEL M470-50A
Bulín, Tomáš ; Švábenská, Eva ; Hapla, Miroslav ; Ondrůšek, Č. ; Schneeweiss, Oldřich
Electrical steel M470-50A belongs to the most often used materials in electrical machines. Due to this fact, it is desirable to know the magnetic parameters after processing raw sheets into the required shape. Basic parameters of mechanical, electrical, and magnetic properties of the sheets are usually obtained from the producer but the magnetic properties are changing in dependence on additional machining processes. The aim of this study is to describe changes in parameters of magnetic behavior after punching, laser and spark cutting of the original sheets. The basic information of structure was obtained by optical and scanning electron microscopy. The magnetic parameters were acquired from the measuring of magnetic hysteresis loops in dependence on saturation fields and frequencies. The results are discussed from the point of view of applied\ncutting technology with the aim to obtain the best magnetic parameters and consequently a higher efficiency of the final product. Results can be used as input parameters in simulation of the electrical machine.
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The tax system reduces motivation to return to work among mothers with young children: recommendations and evaluation
Šatava, Jiří
In the Czech Republic, the overall taxation of work, i.e individuals' income tax together with social security and health insurance contributions, places a heavy burden even on the relatively low earnings of so-called second earners in households, i.e. partners with lower earnings. These peoples' work activity is, however, generally very sensitive to the level of taxation. A large group of these earners is made up of mothers with young children. Mothers who are the second earner in their household are subject to a participation tax rate (PTR) up to 30 % higher than their partners, and yet a higher PTR results in lower motivation to work. Women with children and low earning potential are subjected to the highest PTRs in comparison with their partners.
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Food supplements and iodine supplementation in pregnancy
VAVROUŠKOVÁ, Edita
Iodine is a trace element tremendously important for thyroid gland hormone production. It affects normal evolution of brain, especially in the time of intrauterine development and in the first year of child's life. Deficiency of iodine can lead to creation of pregnancy goiter, it also decrease the probability of carrying fetus to term and increase the probability of disorder in psycho-motoric evolution of child. Czech Republic is geographically lined up among the regions with lack of iodine in natural sources and food. However, nowadays the iodine deficiency is considered to be managed. But risk groups of population still exists, especially pregnant women can be endangered by lack of iodine, because the need of iodine intake in pregnancy increases to 200 250 ug per day and this level must be ensured. Consumption of food rich in iodine can cover the increased need of iodine. Significant source of iodine is milk and milk products. Another source is table salt enriched with iodine, but its daily intake is limited. Rich sources of iodine like sea fish, sea products and seaweed rarely occur in our diet. The goal of thesis was to evaluate intake of dietary supplements with iodine by pregnant women and evaluate women's awareness of higher iodine need and iodine food sources. Quantitative research in form of questionnaires was chosen for getting information from higher number of individuals. The questionnaire consists of 15 questions. Answers were gained from 118 respondents living in Central Bohemia, Moravia-Silesia region, Liberec region, region Highlands and South Bohemia. Questionnaire was distributed to gynecological ambulances by employees of State health institution. I visited gynecological ambulances in South Bohemia personally. By evaluation of questionnaire was found out that dietary supplement with iodine use 63 % pregnant women in researched population. All respondents always use only one type of dietary supplement. Among the most used belong "Chytré miminko", "GS mamavit" and "Femibion 800". 68 % of respondents know the importance of higher iodine intake in time of pregnancy. Question about daily recommended dosage was correctly answered only by 35 % of respondents. As a food sources of iodine the pregnant women know sea fishes, sea products, seaweed and table salt enriched with iodine. But 90 % of respondents are not familiar with milk and milk products as important source of iodine. Pregnant women should be better informed about importance of sufficient supply of iodine and about sources of iodine by gynecological ambulances. Information about mentioned issues should occur in magazines, education materials and internet articles more often. Respondents were notified of issues and important role of iodine in time of pregnancy by questionnaire. It is very probable that women found correct answers on the internet or in publication for expectant mothers after filling in the questionnaire.
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Sorption and Stabilization of Metals/Mettalloids by Innovative Synthesized Sorbent Amochar.
Ouředníček, P. ; Trakal, L. ; Komárek, M. ; Pohořelý, Michael
Remediation of contaminated soil which is based on stabilization and immobilization of potential\nhazardous substance by sorption materials has been studied intensively nowadays. Biochar – activated organic carbon belongs to this group of stabilizing agents which can adsorb wide range of contaminants, including metals/metalloids. Surface area of the biochars is quite large in general and functional groups (e.g. COO–) can form chelates or alkaline elements on the surface, which is represented by cation exchange capacity. Altogether with the high pH values (7.00 – 10.00), biochars are quite effective sorbents and can adsorb metals/metalloids from the solution (ground water), especially in acidic soils (in the environments affected by intensive mining activities). Sorption\neffectiveness can be increased (especially for As (V) or Cr (VI) sorption) by modification of biochar by various types of secondary oxides. Innovative sorbent AMOchar (AMO + biochar) has been synthesized currently. The product was prepared by adding of biochar to the reaction solution during amorphous manganese oxide (AMO) synthesis. The AMOchar was formed mainly by Mn-oxalates which had coated surface of the pristine biochar. AMOchar composite was able to remove significantly higher amounts of various metal(loid)s from the solution despite the rather high pH of the material. Sorption effectiveness was high not only in case of Pb (II) sorption (almost 99%), and Cd(II) (51.2%), but also a very high amount of As(V), 91.4%. Additionally, both AMOchar composite was able to reduce Mn leaching. This can avoid potential post-contamination caused by the dissolution of less stable Mn-oxalates as observed in the pure AMO.
Fulltext: content.csg -  PDF
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