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Anthropological aspects of male infertility
Sakmárová, Františka ; Novák, Jan (advisor) ; Brynychová, Iva (referee)
Nowadays, more and more couples have had trouble with conceiving a child. Worldwide, around 15 % couples are affected by infertility, while men make up for 20-70 % of this problem. In last decades, the prevalence of the male infertility has been rising globally, with the sperm quality parametres becoming worse. From the view of male infertility etiology, it is rather difficult to pinpoint reasons of this trend. Besides sick individuals whose infertility is caused by genetic or congenital malfunctions or infections, the male infertility affects seemingly healthy individuals as well. The infertility of these objectively healthy (albeit infertile) individuals is from the etiological point of view said to be caused by environmental factors, worst of them being endocrine disruptors, and lifestyle factors, such as obesity, alcohol, smoking and stress. This thesis presents a complex view of male infertility problem, describing both its current state in epidemiology and its changes in time and space. Further on, the thesis is dedicated to the etiology of male infertility, including the lifestyle factors, where anthropology point of view is accentuated. Keywords: male infertility, reproduction, sperm, sperm parameters, causes of male infertility
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Bipedal locomotion of primates: ecological, ontogenetic, and morphological aspects
Letošníková, Lenka ; Hora, Martin (advisor) ; Novák, Jan (referee)
In my bachelor's thesis I focus on bipedal locomotion and bipedal posture of various primate species in a morphological, ontogenetic and ecological context. Nowadays, a habitual bipedalism is used only by human, about whom I mention only marginally with comparing him to the other primates in my thesis. First part of thesis deals with morphological aspects of bipedal primate locomotion, including description of anatomical differences of primate species and comparison of bipedal walk to quadrupedal walk. Next in thesis, I deal with ontogenetic aspects of bipedal primate locomotion, where I compare the rate of bipedal use among infant and adult primates and also among selected primate species. Finally, I describe the use of bipedal walk and bipedal postures of primates in different situations and ecological conditions. Keywords: bipedalism, primates, primate locomotion, ontogenetic aspects, morphology, ecological aspects, transport, human
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Spectral flux of the p-Li-7(C) Q-M neutron source measured by proton recoil telescope
Novák, Jan ; Bém, Pavel ; Fischer, U. ; Götz, Miloslav ; Honusek, Milan ; Simakov, S. P. ; Šimečková, Eva ; Štefánik, Milan
The cyclotron-based fast neutron source at NPI produces mono-energetic neutron fields up to 35 MeV neutron energy using the p + 7Li(carbon backing) reactions. To be applied for activation cross-section measurements, not only the intensity of neutron peak, but also the contribution of low-energy continuum in the spectra must be well determined. Simulations of the spectral flux from present source at a position of irradiated samples were performed using CYRIC TOF-data validated in the present work against LA150h by calculations with the transport Monte Carlo code MCNPX.
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The activation of W and Zr by deuterons at energies up to 20 MeV
Šimečková, Eva ; Štefánik, Milan ; Bém, Pavel ; Mrázek, Jaromír ; Novák, Jan
The proton and deuteron induced reactions are of a great interest for the assessment of induced radioactivity of accelerator components, target and beam stoppers. In order to investigate the important nuclides, we have carried up the irradiation experiments with the variable-energy cyclotron U-120 M of the NPI CAS ež. The production cross sections of the nuclides 179,181,182m,182,183,184m,184,186Re and 187W from reaction on natural W were investigated by deuteron beams of 20 MeV energy. A part of preliminary results of deuteron activation of natural Zr is also shown. The stacked-foil technique was utilized. The comparison of present results to data of other authors and to predictions of evaluated data libraries is discussed.
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Tracing the history of synanthropic flora and vegetation in the Czech Republic
Pokorná, Adéla ; Novák, Jan (advisor) ; Lososová, Zdeňka (referee) ; Mercuri, Anna Maria (referee)
1 Abstract Plant macro remains from archaeological situations were studied in order to trace the history of gradual formation of today's synanthropic vegetation. Synanthropic plants represent a heterogeneous group of species with various qualities and strategies, as well as with various immigration histories. In general, the synanthropic flora is rich in aliens, so it is important to know, when exactly these species immigrated to our territory (to know their residence time). Besides the determination of the residence time of alien plants, also the dynamics of formation of urban flora and vegetation was studied. Special attention was paid to the Medieval Period, when the urbanisation process started. The emergence of urban agglomeration may have been the cause of the emergence of new habitats, followed by formation of new plant associations - the predecessors of the today's ones. In general, towns represent a special case of anthropogenic environment with many various synanthropic habitats, causing their species richness. Questions 1. When exactly the synanthropic flora of medieval towns emerged? Was the transition from the Prehistory to the Medieval Period rather gradual or sudden? 2. What particular species took place in the medieval change of synanthropic vegetation? Where did these species come from? Was...
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Parking P&R in Brno
Janyška, Miroslav ; Novák, Jan (referee) ; Holcner, Petr (advisor)
This thesis deals with organization of parking in the city of Brno focusing on park and ride facilities. It contains basic information about transport infrastructure in Brno, integrated public transport system and multimodal transportation. The practical part is a set of proposals for locations of new P&R lots, their multi–criteria analysis, followed by estimation and comparison with the solution proposed by local authorities. The thesis also contains of analysis of a parking lot in the town of Blansko nearby Brno, that is spontaneously used as a park and ride facility.
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Compiler from Scheme to C/C++
Novák, Jan ; Yaghob, Jakub (advisor) ; Bednárek, David (referee)
Scheme is a simple language which is well suited for analyzing various constructs of programming languages and experiments with code optimization. To implement this language we use an intermediate code called continuation-passing-style, which is widely used in implementations of functional languages. We present its relation to conventional implementations which use stack to control the program. Then we describe simple methods of global static analysis of the language. Analyses are based on abstract interpretation which uses abstract garbage collector. It allows many optimizations such as variable globalization, variable renaming and elimination of unused assignments. Powered by TCPDF (www.tcpdf.org)
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