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Alternative Fuel Engines
Bilík, Michal ; Ramík, Pavel (referee) ; Dundálek, Radim (advisor)
This thesis deals with an overview of alternative fuels for road vehicles and their effect on ecology. This work also describes the specific characteristics and peculiarities of power units which run on alternative fuels, their advantages, disadvantages and shows examples of some vehicles.
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Fuel for internal combustion engines
Vrbický, Jiří ; Jedelský, Jan (referee) ; Štětina, Josef (advisor)
This thesis is concerned with basic features of fuels for internal consumption engines, especially their influence on thermal efficiency. It also introduces dividing of fuels and their compare in ecologic, economic and technologic side. It is concerned convectional fuels (gasoline, diesel oil) and alternative fuels (nature gas, bottled gas, hydrogen, biodiesel, biogas, methanol and ethanol).
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Alternative fuel for internal combustion engines for commercial vehicles
Snášel, Pavel ; Charvát, Pavel (referee) ; Štětina, Josef (advisor)
The liquid petroleum fuels, gasoline and diesel, have gradually enforced during the development of thermal machines. Because these fuels are non-renewable and their usage is joined with many ecological and economical problems, we face the task how to replace these dominating fuels. The purpose of this thesis is to summarize and compare the properties of alternative fuels, especially their heating value, and sketch the supposed progress of their usage in transportation.
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Costs and benefits of alcohol probition in the Czech republic
Rokošová, Lucie ; Komrska, Martin (advisor) ; Slaný, Martin (referee)
This diploma thesis compares the profits and costs of the prohibition adopted in the Czech Republic during September 2012. The prohibition that lasted two weeks was a reaction of the Czech government on series of intoxication due to the proof of toxic methanol. The thesis detects, based on the comparison of the value of saved lives and costs that the prohibition cause, the effectivity of the government interference on the market oriented economy. The profits of the prohibition are defined as a value of saved lives of people, who would die because of the intoxication if the prohibition would not be adopted. The value of the human life is defined by DALY (disability-adjusted life years), the willingness to pay for prolongation of own life and the amount of potential juridical refunds. The costs of the prohibition are formulated as a value of unsold goods and services. Diploma thesis considers also impact of prohibition on tax collection. We can state that, based on the cost-benefit analysis, the adopted prohibition was economically effective.
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Easily accessible poisons and crime in Czech republic
PILAŘ, Michal
Based on the study of available literature in this thesis are defined easily accessible poisons, which are carbofuran, methanol, ethylene glycol, marijuana, methamphetamine, heroin and cocaine. The thesis is further defined by crime, with those readily available poisons committed on the territory of the Czech Republic. Defined easily accessible poisons were also associated with a particular crime that is committed to them and based on statistical outputs of the Czech Police and the National Drug Headquarters of the Police of the Czech Republic was conducted statistical research that is readily available to these poisons committing a crime on the territory of the Czech Republic, and whether there are differences in crime rates between different regions of the Czech Republic. The second part describes the methodology of work and research questions. The third part consists of the results which graphically compares crime committed with easily accessible poisons. The final part consists of discussions, where they are analyzed the achievements of work. To achieve the objectives in this work used data collection methods, analytical, mathematical and graphical. While writing this thesis I first considered studying literature in easily accessible poisons and study applicable laws, which serve as the legal basis for the definition of crimes. When I was writing a thesis based on research questions: They are easily accessible poisons available in the Czech Republic? There in the CR crime committed using readily available poisons? There are differences between individual regions in the Czech Republic? These research questions were answered by meeting our goals, namely the Czech Republic are readily available poisons available with them commit crime in the crimes committed there are differences between individual regions.
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CHEMICALS MANAGEMENT IN THE COMPANY PRIMAGRA,a.s.
GAIGEROVÁ, Petra
Abstract The protection of the population against the consequences of major accidents in recent years has been a very important issue to deal with. As well as hazardous chemicals which we encounter in our everyday life, intentionally or unintentionally. Therefore I have chosen the theme, which deals with the effects of hazardous chemicals and the possibility of accidents caused by hazardous substances. Another motivation for the selection of the topic of this work is that I have been working as head of the laboratory in a chemical plant for several years and proper handling of chemical substances has become an everyday necessity, as well as improving prevention of our company. Most of the people associate industrial accident with the Ukrainian Chernobyl nuclear plant disaster or a chemical plant in Seveso, Italy. The releases of hazardous substances into the environment are frighteningly common in the Czech Republic as well. The main aim of this work is to determine possible impacts of the effects of individual hazardous substances on the Primagra Company, a.s. Considering this aim, the main research question has been raised: Which hazardous substances in the Primagra Company, a.s. can cause accidents? Based on this issue, further practical parts of the next target can be defined: simulation of the accident in the Primagra Company, a.s., threats to the object and possible accidents. The thesis is divided into two parts: the first theoretical part is followed by the introduction of the Primagra Company, a.s., by the sort of stored substances and modeling that is important for finding possible impacts on the accident. The introductory section summarizes the basic information concerning major accidents, legislation and examples of accidents that are associated with the release of hazardous substances in the past. Regarding the topic of the work, the thesis describes features of hazardous chemicals, labeling and packaging of the chemical substances and preparations, documentation of hazardous chemicals and important physical properties associated with the management of hazardous substances. The significance of the second part is the implementation of the simulation, also known as modelling of a chemical accident associated with hazardous chemicals. Primagra Company, a.s. became a selected plant where several hazardous substances were treated at once. For the purpose of modelling, methanol was used as a substance. TerEx was used as a simulation software tool. By using this program two emergency situations were modelled. The type of model Bleve was used, which is suitable for the hitting of the tank by fire and subsequent destruction. The bulk of the tank contents then escapes into the cloud of gas and vapor of the liquid, which is rapidly mixed with the air. Subsequent fire has risen sharply due to turbulence and mixing with air. The result is a rising ball of fire - ie. Fire Ball. It is possible to conclude from the modeled results and outputs that a dangerous cloud reaching 145 m from the site of an accident would occure. It could cause mortality of 10% within the distance of 145 m. There would be a risk of burns 1 degree within a distance of 375 m. Recommended evacuation distance by reaching 375 m. By the analysis, it was found, that in the case of an accident in the company Primagra, a.s. employees, the population in the surroundings, the environment, property of the company may be affected. The company would suffer a loss in a business field, such as loss of customer interest, direct material and production decrease. More serious impacts that would implicate in human lives would not occur, however. This work may either be used in the company Primagra Company, a.s. as a protection against accidents or as a study material.
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Methanol intoxication
PÍCHA, Pavel
This bachelor thesis deals with the theme of methanol intoxication. This issue has been known by people for years. However, it came into the consciousness of people and medias at 2012, thanks to the infamous methanol affair. Methanol is extremely dangerous to people, especially because of its properties and its toxicity. Toxic metabolites are mainly: formic acid and formaldehyde. A man is almost unable to recognize the difference between methanol and ethanol- which is a part of many popular alcoholic beverages. During the methanol intoxication, particularly the basal ganglia and optic nerve are affected. Clinical symptoms of methanol intoxication are ebrieta, gastrointestinal problems such as: abdominal pain and diarrhea. Furthermore: visual disturbances, quantitative disturbance of consciousness, convulsions and acidosis. The severity of poisoning depends mainly on the amount of methanol consumed. Minimal toxic dose is 0.1mg per a kilogram of a body weight. The most efficient way, when providing the first aid, is to provide the patient with some ethanol. The most important steps for hospital treatment include administering antidotes of ethanol or fomepizole and hemodialysis. The aim of the study was to explore the knowledge of paramedics about taking care of a patient who is suspected with methanol poisoning. Qualitative research was conducted through interviews with medical rescuers of the South Bohemian Emergency Medical service. The research sample was given to 10 respondents of different gender, age and length of service. Respondents research group was chosen at random. Respondents were laid a total of 18 questions, which should determine whether paramedics have enough information about the intoxication and ways of how to take care about a patient suspected with methanol intoxication. The results are presented in a box, for better clarity. It showed, during interviews, that only a small part of the respondents have an experience with methanol intoxication. Furthermore, it appeared that the respondents have basic knowledge about methanol intoxication and they should be able to provide the patient, suspected to have intoxication with methanol, with proper first aid and take care of him without hesitation, especially in prehospital emergency care. Further details concerning the research are presented in the discussion. The objective was achieved. We managed, to reply positively on the question: Do paramedics have enough of new knowledge when taking care of patients being suspected with methanol poisoning. Paramedics, employees of the South Bohemian Medical Service have enough knowledge about taking care of a patient, intoxicated by methanol. On the other hand, the rescuers were missing the knowledge about the precise toxic doses of methanol and precise dosage of ethanol as an antidote. Most paramedics also did not know the subsequent exact procedure of hospital treatment, and new types of antidotes. The auxiliary leaflet about metanol intoxication was created on the basis of explored results of practical part of this bachelor thesis to help paramedics. Intoxication with methanol is not so frequent, but it is very dangerous and it is very difficult to diagnose it on the spot. When occured, it is important to know the first aid and the way of how to take care of a patient suspected to be intoxicated with methanol. People should learn from the cases described in the media and also they should stop buying alcoholic products from unknown manufacturers. It would be the prevention of further disaster. We only have one health.
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Premedical care for patients with methanol intoxication
KŘENEK, Jan
Intoxication through methanol is a relatively less frequent type of poisoning, which can lead even to a serious damage to the human body; can cause loss of vision as well as permanent infliction of the central nervous system. And also the death of the afflicted person is possible with late treated conditions. The methanol metabolites are quilted for the damage of the human body - mainly formic acid that is why the therapy of this health and life-threatening condition is mostly focused on the metabolism of methanol. The theoretical part deals with pre-medical that is pre-hospital emergency care of patients with a methanol intoxication. The first chapter deals with the pre-hospital emergency care, a medical rescuer and his competencies, and the ambulance crew is listed here as well. Furthermore, the theoretical part of the thesis deals with the acid-base balance, metabolic acidosis, but also involves the Toxicological Information Centre. The next chapter explore methanol and its characteristics and the history of methanol in the course of the human civilisation. It explains the metabolism of methanol and highlights the symptoms of acute and chronic methanol intoxications. The last chapter is directly focused on first aid in this state provided by a layman; and on the treat methanol intoxication in terms of pre-hospital emergency. Last but not least, it is also concerned with the effects of the methanol intoxication. The practical part of the thesis is focused on mapping the activities of a paramedic in a pre-medical care of a patient with a methanol intoxication and on determination the level of awareness of laity as well as the clients of the sobering-up station for this type of poisoning. As well as a laity with help of anonymous questionnaires. The research survey was conducted through the quantitative method among the paramedics. The amount of the data was collected during the March 2015. The research group were the randomly choired laymen and clients of the sobering-up station and the paramedics working in the Emergency Medical Services of South Bohemia Region at the regional centres of Strakonice, Písek, Prachatice, Český Krumlov and Jindřichův Hradec. The anonymous questionnaire was distributed to the above stated regional centres in the number of 100 pieces, for the laity in the same number and 10 pieces for the sobering-up station in České Budějovice. The questionnaire for the paramedics contained a total of 18 questions. The first four questions were the ones of stratification, the questions no 5 to 18 were closed and directly addressed the issues concerning the provision of pre-hospital emergency care in methanol intoxication, whereas the hypothesis no. 1 was confirmed. The questionnaire for the laity in itself contained a total of 14 questions. The first three questions were of socio demographic character. The fourth question was closed and crucial to the continued questionnaire. The question no. 5 was semi-open and remaining questions no. 6 to 14 related to determine the level of awareness among the laity methanol intoxication. The results are processed into clear graphs and the related hypothesis no. 2 was also confirmed. The first goal was to map the activity of a paramedic in a pre-medical care of a patient with a methanol intoxication. The second objective was to determine the level of awareness of the laity of this intoxication. Both the objectives have been met. The statistical method of processing a research survey showed that paramedics are knowledgeable in the procedures of pre-medical care for patients with a methanol intoxication and that lay people are informed of this intoxication, but would welcome more active involvement of experts in informing society about this issue. Based on the results of the work an information leaflet was produced for the lay and paramedics in the field of alcohol intoxication.
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