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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

Mikroklimatické podmínky v rekonstruovaném kravíně

Nedbal, Jaromír January 2011 (has links)
No description available.
2

Vliv mikroklimatických faktorů na výkrmovou schopnost a jatečnou hodnotu krůt

Petr, Pavel January 1992 (has links)
No description available.
3

Robotizované dojení a jeho působení na dojnice

Ševčík, Jiří January 2016 (has links)
The objective of the dissertation thesis was to evaluate the effects of two different types of milking systems (CMS - conventional milking system vs. AMS - an automatic milking system) on average daily milk yield, on frequency of attending robots, on pre-milking teat preparation procedures and stimulation and milking time, on the teats traumatization of Holstein cows. The experiments were performed in two locations: Žabčice School Farm of Mendel University in Brno and ZEMAX, a. s. in Šitbořice. Data was collected for a period 1st January 2014 to 15th December 2015. Higher average milk yield per day and lower milk yield per milking on the other hand on the farm with AMS were caused by a higher frequency of milking. Cows on farm with CMS were milked twice a day. On the farm with AMS dairy cows were milked in accordance with their own needs. Milking frequency in the AMS was in 2014 2.47, in 2015 2.88 per day. Heat stress has negative impacts on milk production. Effect of heat stress showed more markedly in 2015, which is probably related to the fact that the value of THI greater than 80 lasted longer. The length of pre-milking teat preparation procedures and stimulation various neighborhoods was found in AMS in 2014 from 0:13 min. to 0:16 min., in 2015 from 0:14 min. to 0:19 min. On farm with CMS time not be registered. The length of milking time with CMS in both years was 5:02 min. In AMS was in 2014 from 3:03 minutes to 3:53 min., in 2015 from 3:05 min. to 4:45 minutes. In process of milking machine teat traumatization were smaller when using AMS.
4

Studium fyziologických reakcí dřevin na různé stanovištní podmínky

Sochor, Jiří January 2011 (has links)
No description available.
5

Vliv rozdílných typů zástinu na vybrané vlastnosti plantáží Coffea arabica v okolí města Villa Rica, Peru

Ehrenbergerová, Lenka January 2017 (has links)
Coffee belongs to very important crops in the world and it is traditionally grown in agroforestry systems. During the five years the four coffee plantations with different type of shading were studied in the foothills of the Peruvian Andes. The highest amount of carbon was found in the plantation shaded dominantly by Eucalyptus spp., followed by Pinus spp., Inga spp. and non-shaded site. The microclimatic characteristic measurement shows that shading reduces the mean air and soil temperatures and increases the air humidity, compared to the non-shaded site. It was recorded drier soil conditions at the shaded site. At all plantations, coffee variety and age had a significant effect on Coffee Leaf Rust incidence. The value of the timber stored in shade trees varied significantly. There were different results for different shade trees species (from 2% to 72% of the annual income from coffee production).
6

Ergonomický audit na vysoké škole / Ergonomic audit at university

Kazarian, Anna January 2016 (has links)
This thesis deals with ergonomic audit of the workspace and working conditions of a university. First, factors affecting students and researchers are analyzed, with focus on their effects on physical and mental health. Attention is mainly given to the effects of thermal and moisture parameter of air, carbon dioxide concentration, lighting and classroom and office equipment. Level of adaptation of the workspace to the needs of disabled students and faculty is also considered. In the practical part of the thesis, the proposed audit is carried out at the Faculty of Mechanical Engineering of the Brno University of Technology. Measurements of ergonomic parameters were performed in selected rooms. Based on their results, shortcomings were identified and corrective measures were proposed.
7

Charakteristika ovzduší vnitřních prostor zdravotnických zařízení / Characterization of indoor air in health care buildings

Hladíková, Dita January 2013 (has links)
Hospitals and healthcare facilities are very specific times of microenvironments, which requiring monitoring air quality. People who use healthcare facilities are due to a weakened immune system very sensitive to air quality. Acceptable indoor air quality in healthcare facilities may have adverse effects on job performance at the personnel and their errors may have very serious consequences. The aim of this paper is to evaluate the main components of the inner microclimate (temperature and relative air humidity) and concentrations of carbon dioxide in the environment of selected healthcare facilities in the Czech Republic and to compare the results with the related legislation. The measurements were carried out in two hospitals and nine private medical offices from December 2011 to March 2013. The results showed that the values of microclimate factors and the concentration of carbon dioxide in the environment of patient rooms were different in cold and warm part of the year. In the patient rooms the levels of relative humidity diverged from the legal requirements mostly in winter - while those of temperature in summer. The concentration of carbon dioxide was affected by the occupancy rate and the size of the rooms. Air quality in the operating theater was primarily characterized by very low relative...
8

Monitoring a regulace parazitického roztoče Varroa destructor v chovech včely medonosné (Apis mellifera

KLEČKOVÁ, Romana January 2018 (has links)
The aim of this thesis was to monitor the Varroa destructor parasitic mite in correlation with the microclimatic conditions of the Carniolan honey bee (Apis mellifera carnica). The rate of infestation of selected bee colonies at different locations was assessed in three-day intervals. At the same time, the microclimate in the hives was observed. The monitoring took place from April to mid-October. Also, the effect of the microclimate on the mite fall count was evaluated. During the whole evaluation, the highest average daily fall count was 2.08 mites per day at honeybee colonies at location 1 and 2; 1.97 at location 3. There was no statistically significant difference (P > 0.05) between those locations. The comparison of fall count between the moths of observation revealed, that highest fall count was during September (3.03 mites per day) and the lowest fall count was in April (0.41 mites per day; P 0.001). The rates of dependence (assessed by correlation analysis) between the fall count and microclimatic conditions in individual colonies varied. The strongest correlation between hive temperature and fall count (r = -0.45, P 0.05) was found at location 2. A low correlation was found at location 1 (r = -0.17, P 0.05). On the other hand, location 3 showed an insignificant and inconclusive correlation between hive temperature and fall count (r = 0.003, P > 0.05). The aggregate data (without distinction of location or month) showed significant (P 0.05) correlation between fall count and hive temperature (r = -0.14). The correlation between relative air humidity in hive and the fall count was statistically insignificant and low (r = -0.02, P > 0.05). The results revealed that the degree of correlation between the hive microclimate and the development (fall count respectively) of the Varroa destructor population is different for each colony. The monitoring of the dead Varroa destructor females is an appropriate complementary tool to diagnose a colony's infestation. The statistical analysis confirmed that with the decreasing summer and end-of-summer temperatures the Varroa destructor population grows and it is necessary to take measures to suppress its growth due to the development of the honey bee long-term winter generation.
9

Využití metody náhrady přírodních zdrojů ("resource equivalency method") pro hodnocení náhrady škod způsobených na ekosystémech člověkem / Methods of resource utilization equivalnecy method for assessing damages caused to human ecosystems

MUNDOKOVÁ, Mariana January 2011 (has links)
The economic evaluation of costs for remediation of montane spruce forest attacked by bark beetle in the different stage of decline (plots with actually living mature trees, plots with dead tree stand, wood is remaining in the ecosystem, plots with damaged stands, which were clear-cut, ten model plots) was made in the National Nature Park Šumava (Modrava model area) using resource equivalency method. Microclimatic characteristics (temperature and humidity development) measured ba dataloggers and communities of epigeic beetles (pitfall traps) were used as environmental metrics. Results indicate that the natural remediation of declined forest is economically most profitable. The microclimatic characteristics of plots with dead tree stand are most similar to the active forest. The species diversity, activity of beetles and frequency of relic species and species indicating virginal forest is higher in plots with dead tree stands. Based on these data we can resulted that the natural remediation of montane spruce forest is the most acceptable way both from biological and economical view (regeneration of ecosystem services of montane spruce forest).

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