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Photobiological safety evaluation of light sources for household use
Jelínek, Jakub ; Motyčka, Martin (referee) ; Štěpánek, Jaroslav (advisor)
This thesis deals with the photobiological safety of light sources used for household lighting. The theoretical part of the thesis is devoted to areas related to photobiological safety, such as the basic description of vision functions, the description of light sources, as well as methods of measurement and evaluation. In the practical part, the spectrum of individual light sources is measured, from which the irradiance limits are calculated, according to which the source is assigned to the appropriate group of hazards.
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Bio-electromagnetic compatibility
Matulík, Martin ; Rozsívalová, Zdenka (referee) ; Matulík, Radomír (advisor)
Following work deals with problems of effects of electromagnetic radiation on living organisms. It goes into interactions of electromagnetic radiation with environment, effects on living organisms, physical units of biological tissues and sorting types of electromagnetic radiation to determine means of protection against adverse health reactions. It enlighten means of establishing sanitary restrictions, differences in legal aspects at Czech republic and worldwide, possible medical utilization, even principles of selected diagnostic and therapeutic techniques. It looks into shielding effects of common materials, ordinarily used for protection against ionizing radiation via findings of practical measurements. Series of radiofrequency measurements has been done with precise spectrum analyzers, which should reveal some basic problems of frequency bands, ordinarily used in current period.
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Photobiological safety evaluation of light sources for household use
Jelínek, Jakub ; Motyčka, Martin (referee) ; Štěpánek, Jaroslav (advisor)
This thesis deals with the photobiological safety of light sources used for household lighting. The theoretical part of the thesis is devoted to areas related to photobiological safety, such as the basic description of vision functions, the description of light sources, as well as methods of measurement and evaluation. In the practical part, the spectrum of individual light sources is measured, from which the irradiance limits are calculated, according to which the source is assigned to the appropriate group of hazards.
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The use and misuse of ionizing and non- ionizing radiation
MAJEROVÁ, Natálie
This dissertation is divided in two parts: a theoretical, and a practical one. The purpose of the theoretical part is to introduce the reader to the elementary terms of ionizing and non-ionizing radiation, their types, sources, influence on humans, as well as possible manners of their use and abuse. The goal of the thesis is to evaluate possible use and abuse of ionizing and non-ionizing radiation. In the interest of clarity, the gathered information was included in the results chapter as a chart. The practical part deals primarily with the first research question whose aim was to establish the level of public awareness about ionizing and non-ionizing radiation. To get answers, the method of data collection by means of a questionnaire survey was employed. The questionnaire consisted of 19 questions in total. The first 3 questions split the respondents into categories based on their gender, age, and educational attainment. The main part of the questionnaire involved 12 closed-ended questions, evaluated by a test. The survey was concluded by 4 opened-ended questions. The questionnaire survey provided a multitude of findings, most importantly that the average public awareness of ionizing and non-ionizing radiation is 57.7%. Finally, the discussion part answers the second research question which sought to determine whether there's a greater danger of ionizing radiation sources being abused.
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Bio-electromagnetic compatibility
Matulík, Martin ; Rozsívalová, Zdenka (referee) ; Matulík, Radomír (advisor)
Following work deals with problems of effects of electromagnetic radiation on living organisms. It goes into interactions of electromagnetic radiation with environment, effects on living organisms, physical units of biological tissues and sorting types of electromagnetic radiation to determine means of protection against adverse health reactions. It enlighten means of establishing sanitary restrictions, differences in legal aspects at Czech republic and worldwide, possible medical utilization, even principles of selected diagnostic and therapeutic techniques. It looks into shielding effects of common materials, ordinarily used for protection against ionizing radiation via findings of practical measurements. Series of radiofrequency measurements has been done with precise spectrum analyzers, which should reveal some basic problems of frequency bands, ordinarily used in current period.
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