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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Detekce aflatoxinu B 1 ve vybraných potravinách

Koubková, Hana January 2010 (has links)
No description available.
2

Změny ve využívání pastevních lokalit na Ivančicku

Juránková, Hana January 2012 (has links)
No description available.
3

Prodejnost sortimentu suchého zboží v shopu čerpací stanice pohoných hmot

Bašta, Petr January 2015 (has links)
The diploma thesis solves an important problem with the supply of fuel in the vicinity of the competitive environment. It was found that the biggest competitors of the subject are two fuel stations in the vicinity, although smaller in the scale of trading range sale, they must be regarded as competitors. Any failure causes the transfer of customers just to them. Analysis of the survey results showed that the proportion of the sales of dry goods to total sales in the years 2010 to 2014 was 13.22 percent on average. In the assortment of dry goods there was a significant increase in sales for vehicles and a reduction in other goods. Other products consists of the following specific items: toiletries, photoes, motorway tax stickers, batteries, telephone cards and coupons and others. The sale of fuel is significantly influenced by the price (for the period 2010-2014 change of 5.06 CZK per liter) and quantity (for the same period change of 28.41 percent). Due to the current low price of fuel and the assumption of relatively same level of sale prices it will be necessary to focus on improving the quality of services provided by employees of fuel station and expanding the trade range of additional sales for motorists.
4

Výskyt extrémních teplot a jejich vliv na výnosové parametry zeleniny v ČR / The incidence of extreme temperatures and their effect on yield parameters of vegetables in the Czech Republic

Švorcová, Petra January 2017 (has links)
The thesis is focused to the occurrence of extreme temperatures in the Czech Republic and monitors their effect on the yield of vegetables. The aim is to prepare a review of literature on the impact of extreme weather conditions on yield and quality of selected vegetables. The thesis is focused on the cultivation of vegetables grown for fruit, namely tomato (Lycopersicon esculentum). Besides meteorological effect they are also taken into consideration environmental conditions, crop rotation, effect of diseases and pests. It is also briefly described growing vegetables, history and specific characteristics of tomato. The research was carried out on areas of the Elbe and the South Moravian vegetable growing region, they are in the Czech Republic for the cultivation of tomato in terms of temperature and favorable natural conditions perfect. For this study, yield data from 1977 to 2015 for the Czech Republic and Central Bohemia has been used. The relationship between yield of tomato and extreme meteorological indices was investigated. It was prepared by descriptive statistics and trend equations yields of tomatoes in the period, together with variations that are designed after pentads and it was created correlation coefficient with range of favorability or unfavourableness individual indices at different growing seasons phonological phases of tomato to its yield. According to the classification of the correlation coefficient is seen that due to the number of dry days of July were both observed area yields were reduced by 41%. It follows that not only extreme temperatures but also reduce rainfall adversely affect tomato yields. As results, we can mentioned that the proceeds of tomatoes are largely influenced not only by the high temperatures and the subsequent drought, as well as heavy rainfall and floods. Based on the results of this study can be confirmed that the extreme temperatures occurring in our vegetable growing region have on the yield of tomatoes adverse effect.
5

Vplyv rôznych metód zákvasov hroznových muštov na kvalitu vína

Kacina, Michal January 2017 (has links)
The aim of this master thesis was to compare the effect of active dry wine yeast (ADWY), own yeast starter and spontaneous fermentation on the quality of wine produced, knowing that the fermentation is a key process in winemaking. An experiment was run with the grape varieties Veltlínske zelené and Pálava, vintage 2016, grown at University vineyards in Lednice. Racked and moderately sulfited must with optimal yeast assimilable nitrogen and sugar content was the starting point of the experiment. It was inoculated by commercial ADWY, a yeast starter prepared previously from the grapes of the same origin and the last sample was not inoculated so fermented spontaneously. Fermentation took place in the University wine cellar. Final wines were not treated by any preparate except sulfiting. Sensory and analytical analysis took place in spring 2017. The usage of self-prepared yeast starter has shown the highest sensory quality in both varieties. It has been confirmed that this old and reliable method is capable of producing high quality wines reflecting the terroir.
6

Studium lisovacího procesu a vlastností tablet s hypromelosou a monohydrátem α-laktosy. / A study of the compaction process and the properties of tablets containing hypromellose and α-lactose monohydrate.

Hávová, Šárka January 2014 (has links)
Charles University in Prague Faculty of Pharmacy in Hradec Králové Department of Pharmaceutical Technology Student: Šárka Hávová Supervisor: PharmDr. Jitka Mužíková, Ph.D. Title of diploma thesis: A study of compaction process and properties of tablets with hypromellose and α-lactose monohydrate Thesis studied the co-processed dry binder RetaLac® from the aspect of his compressibility and dissolution of the active ingredient from tablets. RetaLac® contains α-lactose monohydrate and hypromellose in the identical proportion. The same parameters were tested in the corresponding physical mixtures of FlowLac® 100 with various types of hypromellose (Metolose® 100 SR, Metolose® 4000 SR, Metolose® 100 000 SR) and compared with the substance RetaLac® . Compressibility was evaluated by means of the energy profile of compression and tensile strength of tablets. Salicylic acid was used as the model active ingredient. Dissolution testing was performed using the method of the rotating basket.
7

Objektivizace vybraných rehabilitačních metod na vliv svalového napětí / Objectification of selected rehabilitation techniques used to influence the muscle tone

Pavelková, Zuzana January 2012 (has links)
Master's thesis topic: Objectification of selected rehabilitation techniques used to influence the muscle tone Author: Bc. Zuzana Pavelková Branch of study: TVS_B Disertation Tutor: PhDr. Petr Šifta, Ph.D. Year of Defense: 2012 Abstract: The aim of this study was to discover, whether four selected rehabillitation techniques (dry-needling application, cryotherapy, stretching and kinesiotaping) influence the muscle tone of musculus gastrocnemius and musculus soleus. It was assumed, that above mentioned methods decrease the muscle tone of selected muscles, that was increased by previous running performance or owing to acute or chronic problems with Achilles tendon. The muscle tone was measured by myotonometer in Kinesiology laboratory, Faculty of Physical Education and Sport at Charles University in Prague; muscle tone of twelve students of thisfaculty was measured. Data were displayed by using an analog- digital convertor and consequently evaluated. The results of this study indicate, that four selected rehabillitation methods influence the muscle tone of musculus gastrocnemius and musculus soleus. The muscle tone was best influenced by application of dry-needling and by kinesiotaping; results of muscle tone measurement after dry-needling application and kinesiotaping confirmed above stated...
8

Vliv pastvy na diverzitu mechorostů společenstev suchých trávníků v CHKO Český kras / Effect of grazing on bryophytes diversity of dry grasslands in the PLA Český kras

TENČÍK, Aleš January 2018 (has links)
Dry grassland are among the most endangered plant communities mainly due to the overgrowth of a number of localities. That is why from the beginning of the 21st century pasture with mixed herds of sheep and goats is restored on the most valuable dry grassland sites in the Bohemian Karst as the way of maintaining these habitats. Concurrently, research sites each 1x1 m in size were set up at four pastured localities, and were paired with control sites equipped with a fence for the research of grazing effect on vegetation. The main aim of this work was to evaluate the effect of grazing on the diversity of bryophytes at the forty pairs of the above-mentioned areas in three types of calcareous dry grasslands. In addition to the inventory of bryophytes, data on the most important abiotic and biotic factors of the environment were recorded on individual sites. The total number of bryophyte species found at the research sites is 46. 37 species were found at the grazing areas and the same number was at the fenced areas. Minimal differences in the number of species of grazed and unspoilt areas were also found in the comparison of individual localities. The grazing effect was shown up more significantly on species richness in the comparison of individual types of communities, especially in broad-leaved dry grassland (T3.4). There was a 40% increase in the number of species on grazing areas. The environmental factors have a positive effect on the species abundance mainly due to the higher slope of the terrain and the correlation with the larger occurrence of the stones, the smaller coverage of the herb layer and the litter. These conditions prevailed in areas with rock outcrop vegetation with Festuca pallens (T3.1), where the largest species richness of bryophytes in area was found. In the obtained data, the influence of grazing on the species composition of bryophytes on grazed and unspoilt areas was also assessed with the statistical methods and the Sörensen test of beta-diversity. The results show that grazing significantly influences the species composition towards open grassland and supports the growth of the bryophytes T3.1 plant community at the expense of the T3.4 plant community
9

Kinetika vzniku ultrajemných částic meliva při expozici v dezintegračním systému. / Genesis of new ultra-fine particles of milling stock in the course of the mill exposure.

Kejík, Pavel January 2012 (has links)
This work deals with the study of limestone and corundum dry milling using attritor-type stirred mill in a batch mode. There were stearin and polyethylene glycol used as surfactants and spherical shaped steel grinding elements used for the experimental part of the work. The main idea was to examine behavior of the selected grinding stock type within a long-term grinding forces exposure in selected conditions of ultrafine dry milling leading up to the submicron area. Characterization of samples was performed by laser granulometry, X-ray powder diffraction analysis, flame atomic absorption spectroscopy, objective color determination and electrokinetic potential measurement. Experimetaly measured data implies that in all cases there was a re-agglomeration of the grinding stock particles occurring, although in different stages of the disintegration process and in mutually various degree. The analysis results denote that a larger erosion of the crystal structures with the associated increase of the amorphous phase in the submicron particle size took place in the grinding stock.
10

Využití umělé inteligence pro snižování rizika v podniku / The Use of Artificial Intelligence to Reduce the Risk in the Firm

Samohýl, Lukáš January 2016 (has links)
This diploma thesis is focused on risk analysis of dry dog food range of products sold in a retail chain named Zvěrokruh. The main goal of this work is creation of model with use of the fuzzy logic. The model helps with the dry dog food range risk evaluation. The model is created in MS Excel and MATLAB. Outcome of this work is a tool which evaluate quality of the dry dog food, which can be afterwards analysed in other point of view.

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