National Repository of Grey Literature 671 records found  beginprevious627 - 636nextend  jump to record: Search took 0.01 seconds. 
Comparison of acoustic absorption coefficient of different materials using in the cabins of agricultural machinery
CALDR, Vladimír
The work deals with acoustics, acoustic materials and ways of reducing noise in the cabins of agricultural machinery. Provides an overview of the individual producers in the Czech Republic and their products. Finally, it focuses on the physiology of hearing and health risks excessive noise levels.
Measurement of acoustic pressure in the workplace.
ČERNÝ, Lukáš
Acoustic pressure in environment protection programs of developed countries is the one of most important issue after air and water pollution. Acoustic pressure is all around us, such like machines, traffics and some other things. It is not possible to completely stop the noise, but there are some certain ways were used to reduce it up to acceptable limits. The aim of this work is to measure the acoustic noise and find solution to reduce it. The first measurements were done indoor (workplace studio) focused on room acoustic. We measured the acoustic pressure for three heights in different places,but finally the most important results were selected and compared with respect to each others. The next measurements were performed outdoor to collect the results about spread of the noise, which were analyzed with certain limits. The main goal was to find how to safe the human health and maintain peaceful and healthy environmental.
Noise pollution on the farm for breeding goats and neighborhood.
TÁCHA, Lukáš
The bachelor thesis is aimed at assessing the farm for breeding goats in terms of noise level in the neighborhood. The main objective was to measure the noise during the working operation at different places of the selected object, to process the collected data, to calculate the equivalent noise level and then evaluate the results of the work. On the basis of measured and assessed values is apparent that the noise pollution of the examined object has no effect on its neighborhood and therefore it is not necessary to propose any specific actions to improve the current situation.
Brüel a Kjaer sound level meters evaluation and their practical application
NOVOTNÝ, Michal
The aim of this diploma paper was to characterize sound level meters by Brüel and Kjaer Company and especially to offer the description of the Type 2250 and characterization of its functions. One Type 2250 Sound Level Meter was available to the author when working on the diploma paper. This measuring instrument was used for obtaining data from measuring in several different situations. These measuring results were thereafter presented.
A Biological Noise In The Environment of Farms Breeding Dairy Cows.
DVOŘÁK, Miroslav
In stockbreeding of farm animals implicates a noise not only an implementing and increasing mechanization, but as well as a noise incurred by animals themselves. It means a noise rising by speech of breeding animals (a biological noise). The aim of this work is measuring of this noise on a family farm in Olešnice, work it up according to appropriate standards and demonstrate the results graphically. Obtained noise rates are reviewed in term of legislative and hygienic regulations and orders.
The effect of the train noise on prices od properties in Prague:hedonic pricing method
Šebková, Veronika ; Melichar, Jan (advisor) ; Šohajová, Renata (referee)
The aim of this diploma thesis is to determine what is the effect of the train noise on prices of properties in Prague. This influence is investigated by using the method of hedonic price. The theoretical part is devoted not only to the problematic of the train noise and its physical properties but also to its impact on humans and the prices of apartments. Then the train noise is specified as well as its issuers and the ways in which it is possible to defend from the negative effects of the impact of the train noise. The thesis also explains the various stages of the method of hedonic price together with the theoretical part of Foreign Studies which have been engaged in using the method of hedonic price and the train noise. In the empirical part are used the knowledge from search, the selected variables are discussed and are submitted to descriptive analysis and the hypothesis are given. Then the model works through a regression analysis of function of the method of hedonic price and the various results are discussed. This thesis finishes by calculating the implicit prices and elasticities for the individual variables in the selected models. At the very end recommendations and the benefits resulting from the analysis are drawn.
Analysis of traffic noise device on the traffic environment.
JIRAŇ, Josef
In this work, I analyzed the noise of traffic means, ie. cars, trucks, truck sets, busses and motorcycles moving on the road in depence on the character of the routes, where the cardinal role present: number of passing vehicles, vehicle speed, weather, surface and road condition. Based on this analysis, I produced a summary of findings about the level of noise emissions at individual measuring points, processed them into tables and I made suggestions of noise enclosure measures.
Noise level in the surroundings of the broiler farms.
TŮMA, Marek
In my bachelor thesis I deal with the issues of the noise level in the surroundings of the broiler farms. The main purpose of this thesis is the measure of the level noise in different phases of the rearing of broilers. The measured values were used to compute the equivalent sound level of acoustic pressure. The result of this computation was compared with the current lawful legislative of the Government of the Czech Republic. The outcome of this bachelor thesis is the ascertainment if the operation of this farm is not polluting its surroundings by the noise and if there are no overrun of the hygienic regulations.
Objects of livestock production in terms of ambient noise levels
LENC, Jan
This thesis deals with the evaluation of noise exposure in the agricultural cooperative Hosín ? Dobrejovice. The aim of this work was to measure noise levels in the dairy barn area and its surroundings, during these processes work: milking, feeding, removal of excrement, bedding etc. Measurements were carried out in summer and autumn. During the measurement noise was the largest source of agricultural equipment. The results revealed that noise pollution resulting from the operation of agricultural cooperatives Dobrejovice is fair and negative influence on noise pollution does not occur.
Technological lines for maintenance of permanent grass vegetation in the protected landscape areas.
NAHODIL, Antonín
The thesis deals with technological lines for the maintenance of the permanent grass vegetation in the protected landscape areas. The theoretical part describes what are the protected landscape areas and National Parks. Moreover the agro-technical requirements and terms for the performance of individual operations while harvesting the fodder are included there. Also the characteristic signs of individual sites are involved: altitude, slope, natural obstacles, dimensions of the plot and its orientation. The practical part involves the assembly of technological lines for harvesting the hay and silage with high contents of dry matter. Technical and technological requirements on individual mechanization means and operation. Economic evaluation of suggested procedures.

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