National Repository of Grey Literature 29,937 records found  beginprevious29928 - 29937  jump to record: Search took 0.80 seconds. 

Optimization of control system for hygiene in the selected service slaughter, cutting plant
JEŽKOVÁ, Irena
HACCP ( Hazard Analysis and Critical Control Points ) is a science-based system of food safety. This system identifies hazards and risks in food production and it proposes an effective control and monitoring procedures at points that are critical for food safety . In cases where e.g. measured values ( temperature, time) deviates from the set limits are performed specific corrective measures. Within this system of protection of food safety Two critical control points(CCP)were established in selected company and they have been set correctly . Two checkpoints (CP )in HACCP weren´t determined completely so newly designed and in five cases recommended modifications , including one designed to change the compliance time and once in imminent danger .

HPLC determination of selected incestisides in cosmetic
Kameníčková, Daniela ; Šatínský, Dalibor (advisor) ; Chocholouš, Petr (referee)
Charles University in Prague, Faculty of Pharmacy in Hradec Králové Department of Analytical Chemistry Candidate: Daniela Kameníčková Supervisor: Doc. RNDr. Dalibor Šatínský, Ph.D. Title of Diploma Thesis: HPLC determination of selected incestisides in cosmetic Active ingredients fenoxycarb and permethrin were determined in cosmetic anti- parasitic product Arpalit® Neo shampoo against parasites with bamboo extract. Analysis was performed by HPLC using RP-Amide column 100 x 3 mm with a particle size of 2.7 micron and detection by UV at a wavelength of 225 nm. Separation proceeded by isocratic elution with mobile phase of acetonitrile - water (55:45) at a flow rate 1.0 ml/min. Temperature during measurement was 60 řC. For evaluation method was used an internal standard method, as the internal standard was used dye sudan II. For separation was needed time interval of 6 min. The retention time of fenoxycarb was 1.01, sudan II 2.87 and permethrin 4.42 min. Resolution of chromatographic peaks fenoxycarb and sudan II was 10.612 and sudan II and permethrin 6.524. Keywords: fenoxycarb, permethrin, HPLC.

Pile Foundations - Energy Piles
Hoza, Martin ; Leiter, Augustin (referee) ; Glisníková, Věra (advisor)
At a time when ecology and renewable energy sources come to the fore, the use of geothermal energy appears to be one of the suitable alternatives. The aim of this paper is to explain the function of ground source heat pumps, to mention factors affecting the efficiency of the system and discuss the technology of energy piles realization. This paper also focuses at risks associated with the soil temperature influencing and shows examples of realization.

The archive of the Otava river floods and design of analog-based forecasting method
Vlasák, Tomáš ; Hladný, Josef (advisor) ; Soukalová, Eva (referee) ; Kříž, Vladislav (referee)
(EN): Study of historical flood events is important as a base for hydrological studies, as well as for proposal offlood control measures and real-time flood forecasting helping forecasters to support their decisions. This work deals with proposal of Flood Archive (databa of flood event) and its app|ication in the scope offlood protection ofotava river basin to Písek water gauge. The objective was to pťopose Archive of historical floods containing information about casual synoptical situation, connected weather phenomena (precipitation, temperature) and runoff response. Flood formation mechanism in otava river basin was described using this Archive. A forecasting technique based on analogue method was designed. This technique searches historical records for flood events of similar causes and estimates possible development of runoff response. Archive consists of 72 flood events that occurred between I 890 and 2006 and their peak flow in all cases exceeded given threshold discharge in Písek closin. profile (lO-year return period for 1890-196,l and ,l -year return period for 1961-2006). Available historical data was gathered and processed inÍ.lgraphic form (maps, graphs' tables). F|ood Archive is part of the di ssertation thesis. The most outstanding features of flood formation mechanism in otava river...

Reproduction Burbot burbot (\kur{Lota lota}) and incubation of eggs at different temperatures in service
MIKEŠOVÁ, Lucie
The study evaluated the reproductive performance in Burbot burbot (Lota lota L.) and compared the incubation period at two locations. It was confirmed that the burbot wipes at the end of December and beginning of January with an average temperature of 1,93 ? 0,8 ° C. It was found that the content of the eggs in one gram is 3325 ? 248 pieces eggs and 1 ml is 1434 ? 24 pieces of eggs. Also, to evaluate the size of eggs before and after swelling. Size before swelling was 0,814 ? 8 mm and the swelling 0,838 ? 7,1 mm. Further, the absolute and relative fecundity and GSI, the absolute fecundity was 289,279 ? 204,759 pieces of eggs, the relative fertility of 763,523 ? 110,061 pieces of eggs per kilogram of body weight of fish and GSI was 23,15 ? 3.9%. The last parameter was rated incubation period. The incubation period was Vodňany 178,4 ° D and Borových Ladách 145,4 ° D.

Changes of rainfall-runoff regime in the Stropnice river-basin
Volková, Alena ; Janský, Bohumír (referee) ; Šobr, Miroslav (advisor)
This paper deals with the rainfall-runoff regime in the Stropnice river-basin and its development. The aim of this paper is to answer the question of‚were there any changes in the runoff regime during the period 1945 - 2009, and if so, were these changes conditioned by climate or were they caused by human interventions' (e. g. river network modification, changes of the land cover, drainage systems development etc.). The single-mass and double- mass curves were used as the primary methodology. The homogeneity of the time series of mean discharge, precipitation and air temperature were statistically tested using Mann-Whitney-Pettit test and Mann-Whitney test. The Mann-Whitney-Pettit test was performed using the programme AnClim (v5.012), which is freely available online, the Mann-Whitney test was performed using SPSS 15.0. Non-parametric Mann-Kendall test was used for the trend detection, performed in MULTMK/PARTMK by C. Libiseller and A. Grimvall, also freely available online. Some changes in the runoff regime were uncovered in the early 80s', when the runoff decreased, which also happened after 1988. During these periods almost no annual flood occured. The first decrease of the runoff was caused by a drier season in the 80s'. The second decrease after 1988 was probably caused by a build-up of the...

A proposal of flood geodatabase and its applications for flood control
Vlasák, Tomáš
(EN): Study of historical flood events is important as a base for hydrological studies, as well as for proposal of flood control measures and real-time flood forecasting helping forecasters to support their decisions. This work deals with proposal of Flood Archive (databa of flood event) and its application in the scope of flood protection of Otava river basin to Písek water gauge. The objective was to propose Archive of historical floods containing information about casual synoptical situation, connected weather phenomena (precipitation, temperature) and runoff response. Flood formation mechanism in Otava river basin was described using this Archive. A forecasting technique based on analogue method was designed. This technique searches historical records for flood events of similar causes and estimates possible development of runoff response. Archive consists of 72 flood events that occurred between 1890 and 2006 and their peak flow in all cases exceeded given threshold discharge in Písek closing profile (10-year return period for 1890-1961 and 1-year return period for 1961- 2006). Available historical data was gathered and processed into graphic form (maps, graphs, tables). Flood Archive is part of the dissertation thesis. The most outstanding features of flood formation mechanism in Otava river...

Klimatické podmínky rozvoje větrné eroze v oblasti jižní Moravy
Spáčilová, Bronislava
The thesis deals with the current state and future development of climatic conditions of South Moravia in relation to wind erosion and determining the effectiveness of windbreaks. Localities represent areas vulnerable to wind erosion. Climatic conditions were evaluated for the periods 1961-1990, 2021-2050 and 2071-2100, using climadiagrams, temperature and precipitation extremity, water balance and climatic regions. Scenarios assume decrease of subnormal temperature months, negative water balance values and increase in extremely above normal temperature months and below normal precipitation months and the probability of dry vegetation period. The threat of drought should increase and thus the land area threatened by wind erosion as well. Significant ability of windbreaks to reduce wind speed, even when trees are still without leaves, was demonstrated by measuring at five selected windbreaks in South Moravia. The calmest zone was detected at a distance of two to three times the height of the windbreak on the leeward side. To assess the effectiveness of windbreaks in different phenophases without measuring the optical porosity and model WEng were used. Model outputs showed similar attenuation of wind speed as the results of field measurements, but only in the vicinity of the windbreak.

Assess the current state of nutrition of horses in the specific stables and proposal optimal doses according to the their performance
Burcalová, Helena ; Mudřík, Zdeněk (advisor) ; Václav, Václav (referee)
This work deals with calculations of feed rations of selected thoroughbred horses at the High School of Horse Racing in Prague together with an assessment of economic aspects of horse feeding. The school is mainly focused on the education of jockeys, which means that the work with horses has to conform to the school requirements that need not meet the ideal feeding rhythm of the horses. United Kingdom norms were compared to the selected Czech norms. Focus was mainly on the racing season, which provides direct comparison of the feed rations with the horses results in the races. The racing season has the highest energetic requirements that need to take into account not only the requirements for the races themselves but also for the resting periods. Feed rations were measured and fed in precise time intervals. Main feeds were oats, hay, bran and Spillers feeds. During the assessment period a negative side - effect of high temperatures during consecutive heat - wave periods was observed. This aspect may prove important in the future and needs to be taken into account not only for feeding but for the entire horse training. Out of five examined horses, exceedance of digestible energy requirements was observed with two horses and underestimation with one horse. For two of them the anomaly was in norm. However, the horse with the highest exceedance was experiencing difficulties with feeding, always leaving a part of the ration intact. This made it necessary to adapt the rations to a higher figure than calculated. Economic aspect of horse feeding needs to be taken into account. The feeding expenses can be decreased by a suitable selection of a feeding mix, however the savings in this regard are not fundamental.

Neuroeconomics: The analysis of consumer behavior and perception of TV spots
Červenka, Petr ; Chytilová, Helena (advisor) ; Máslo, Lukáš (referee)
The thesis deals with the detailed study of two television commercials of an unnamed energy company. The aim of this work is to determine whether people's subjective evaluation is similar or different to values that were detected during the measurement, after viewing each commercial and in subsequent in-depth interviews. A sample of 24 respondents, who participated in the research, represented the composition of the economically active population in the Czech Republic. These were people of various ages, a combination of educational attainment and an evenly balanced gender ratio. Neurological measurement was done through an eye camera, brain responses were measured using electroencephalography (EEG), and changes in heart rate, skin resistance and body temperature were measured by photoplethysmography. The resulting data ispresented in graphs indicating emotional polarity and activity. The results show that respondent's verbal evaluation of their perception of ads is not necessarily identical with the values that are measured by the devices. The thesis concludes by recommending how to successfully target the so-called end user who uses the services of the company.