National Repository of Grey Literature 30,701 records found  beginprevious30682 - 30691next  jump to record: Search took 1.82 seconds. 

Ion trap
Hejduk, Michal ; Glosík, Juraj (advisor) ; Poterya, Viktoriya (referee)
In the thesis, elementary problems observable in a temperature variable linear multipole trap are described. Those elementary processes that are important for low-temperature interstellar plasma are briefly summarized in the first part. In the same chapter, a theory about particles-confinement in a Paul trap is shortly explained as well. In the second part of the work, the Atomic Beam 22-Pole Trap experimental apparatus from the Physical Institute of the Nature Science Faculty of the Technical University in Chemnitz is described. In the last section, first measurements using the mentioned apparatus are described and interpreted.

Almanach Máj (1858-1862)
HRDINOVÁ, Dagmar
The theme of my bachelor work is an analysis of four volumes almanack ?Máj?. The bachelor work focuses on their own interpretations, the contemporary look through the reviews and literary theorists. In my own interpretation is focused on the themes and motives characteristic of literary styles traditionally used time-dependent, but also for modern experimental literary discourses. In conclusion, I will try to summarize, whether the authors of the almanack ?Máj? have adhere their program, or deflect from it over time.

Scaling features in high energy hadron and nucleus collisions
Zborovský, Imrich ; Tokarev, M. V.
Results of analysis of experimental data on inclusive cross sections of jets, direct photons, and high-pT hadrons produced in pp= ¯ pp and AA collisions are presented in the framework of zscaling. The data were obtained at ISR, S¯ppS, RHIC, and Tevatron. New properties of zpresentation of the inclusive spectra are discussed. A physical interpretation of the variable z and the scaling function y(z) is given. A microscopic scenario of hadron and nucleus collisions at a constituent level in terms of momentum fractions is developed. The z-scaling re ects the structure of the colliding objects, interaction of their constituents, and particle formation and manifests the general properties of self-similarity, locality, and fractality. The obtained results could be used for searching for new physics phenomena in high energy hadron and nucleus collisions in soft and hard regions at RHIC, Tevatron, and LHC.

The influence of medial communication on development of pre - school aged children
PRAJKOVÁ, Michaela
This baccalaureate work deals with influence of teleview on pre - school aged child. Work was dividend into bipartite: theoretic and virtually part. Theoretic part deals with type sof teleview, television programmes in-tended for pre - school spectator, the oldest teleview for children {--} {\clqq}Večer-niček`` and all about of it. Practical part deals with experimental inquiry which was provided on three kindergarden. Aim of this inquiry was to chart, how televiews effects on development of pre - school child, if they have damaging effect, if there is sufficient number of childrens programmes and whether pre - school children have problem to discernment reality and imagination. It was also examine if parents leave about their children trace televiews without censorship and whether they have a sense, that the influence of televiews on child is harmful or not. The other intention tahat was determine was to inquest, whether parents read fairy tales to thein babies or not. Results of personal inquiry are graphically demonstrate and interpreted.

Dynamics of individual motivation under a long-term separation
GALDIA, Silvie
Presented work deals with the topic of long-term separation and the significant impact on motivational structure, emotion regulation and psychic resilience of the individual. The work is devided into three thematic units. The theoretical part presents the basic of motivation as a construction of motivational structure, emotion regulation, resilience and coherence of those phenomena. Finally, refers to the specific extreme conditions of the isolated group. The experimental part provides the preview of previous isolation experiments and their importance in the psychological research world. The last, empirical part evaluates the dates obtained from The Institute of Biomedical problems of the Russian Academy of Sciences and interprets the results of the methods with close relation of the triangle phenomena of individual motivation ? emotion regulation ? resilience. The work involves the evaluation of Personal Concern Inventory, Questionnaire of emotion and PIL (Laura King).

The effect of spoil-mining subtrate with heavy metal contents on leaf physiological status with emphasis on phenolics content.
Kovářová, Monika ; Lhotáková, Zuzana (advisor) ; Soudek, Petr (referee)
5 ABSTRACT Heavy metals abundance in the environment increases via natural and anthropogenic processes, mainly mining and industrial activities. Spoil mine substrates of the Sokolovsko Region characteristic by high heavy metal contents are recultivated by tree planting, e.g. of Scots pine (Pinus sylvestris L.). The diploma thesis is a part of a larger project aimed on interpretation of hyperspectral remote sensing data for monitoring of vegetation physiological state. That is why it is focused on non-specific indicators of stress by heavy metals, which can be detected by foliage spectral analyses. The experimental part of thesis comprises 1) field research on P. sylvestris needles and 2) model pot experiments on tobacco plants. Field research was accomplished in 2009 and 2010 on one control locality and three spoil mine banks localities with different heavy metal soil contents (Hg, As and Cu). Photosynthetic pigments', phenolic compounds'and lignin contents were determined spectrophotometrically. Model pot experiments with tobacco plants (Nicotiana tabacum cv. Samsun) - pilot experiment and experiments 1 and 2 using the spoil mine substrates in 2011 and experiment 3 in 2012 also included treatments with different mercury concentration in irrigation (10 and 15 ppm HgCl2). Gasometric measurements (net...

Experimental and theoretical stability analysis of damped auto-parametric pendulum
Pospíšil, Stanislav ; Fischer, Cyril ; Náprstek, Jiří
The article describes an experimental and theoretical treatment of the auto-parametric pendulum damper modelled as a double-degree-of-freedom (DDOF) system. It is strongly non-linear, with the harmonic excitation being applied in the suspension point and interpreted for instance as an excitation by wind. The stability of the motion in a vertical plane is analysed in the meaning of semi-trivial vibration. This effect of stability loss and possible stability regain is very important from practical point of view, because the motion of an damper beyond the stability limits may act negatively and thus endanger the structure itself. Special experimental frame was developed.The stability of the system is analysed experimentally and compared with theoretical results.

Využití nevratné termodynamiky k popisu tekutin a pevných látek
Maršík, František
The II. Law of Thermodynamics is interpreted as an evolution law of all material systems, which are in interaction with their surroundings. The most important quantity is the entropy, which is defined by the balance law of entropy. The production of the entropy gives information about the processes into the systems and the convexity of the entropy informs us about the stability of the system states. Under the appropriate outer conditions the fluctuations can to drive the systems to an instability. This lecture is devoted to the fluid flow stability and life assessment of thermoviscoelestic solids components.

The study of spin-lattice and spin-spin NMR relaxation of 1H nuclei in water
Dvořák, Petr ; Englich, Jiří (advisor) ; Lang, Jan (referee)
The dependences of spin-lattice and spin-spin relaxation rates of 1H nuclei on the concentration of H2O in H2O-D2O mixtures were measured using experimental methods of high resolution NMR. Before this measurement, we investigated the influence of radiation damping, paramagnetic impurities and temperature upon measurement of relaxation rates, as well as methods of its reduction. We also measured the dependences of spin-lattice and spin-spin relaxation rates of 17O nuclei on the concentration of H2O in H2O-D2O mixtures. We discuss the results, aiming to verify the accurancy of prior interpretations and to assess the influence of chemical exchange.

Transdermal Permeation in Vitro Study of Creams Containing Transkarbam 12
Dvořáková, Pavla ; Doležal, Pavel (advisor) ; Severa, Jan (referee)
Charles University in Prague, Faculty of Pharmacy in Hradec Králové Department of Department of Pharmaceutical Technology Candidate Mgr. Pavla Dvořáková Consultant Doc. RNDr. Pavel Doležal, CSc. Title of Thesis Transdermal permeation in vitro study of creams containing transkarbam 12 The topics of skin barrier function and transdermal permeation enhancers, particularly their structure - action relationship, are covered in theoretical part of this work. It also deals with transkarbam 12 and its mechanism of action, transdermal application of active substances and electrical resistance as a physical unit. Experimental part of this work describes setup used for permeation in vitro experiments on pig ear skin of full thickness. The aim of this work was to find experimental evidence and interpretation of relation between electrical resistance of the skin and flux of caffeine from donor suspension or creams containing transkarbam 12 and also evaluate feasibility of the correction of the variability of the permeation experiments results using preceding infinite dose experiment. It was found that the higher the skin electrical conductivity, the higher the permeation of caffeine from donor samples. For the logarithmic approximation of the relation between caffeine fluxes from creams and skin electrical...