The diploma thesis is focused on a detection and a laboratory control of hazardous substances’ leak into the environment. These hazardous substances are classified. Further, it aims to chemical laboratories of the fire-brigade of the Czech Republic, as well as which place they hold in the fire-brigade system, and it indicates their main duties. This diploma thesis contains a review of some essential types of devices and mediums, which are in terms of the fire-brigade of the Czech Republic usable to practice the detection, determination and assessment of the hazardous substances in various figures of the environment in terrain, i.e. filling of duties of the chemical survey. The output of this diploma thesis is simulation of leaks of the toluene diisocyanate using ALOHA software, TerEx software and Rozex Alarm software. Further on, the proposal of another methodical sheet focused on leak actions of the concrete hazardous industrial substance – toluene diisocyanate. This methodical sheet could therefore broaden pro tempore elaborated sheets for chlorine and ammonia.

The contemporary threat of terrorism has changed the ways in which government and the public view the world. Unlike the existential threat from nation states in previous centuries, today, government and the public spend much of their effort looking for the inward threat. Brought about by high profile events such as 9/11, 7/7, and 3/11, and exacerbated by globalisation, hyper-connected social spheres, and the media, the threats from within are reinforced daily. In the UK, government has taken bold steps to foment public safety and public security but has also been criticised by some who argue that government actions have labelled Muslims as the ‘suspect other'. This thesis explores the counter-terrorism environment in London at the community/government interface, how the Metropolitan Police Service and London Fire Brigade deliver counter-terrorism policy, and how individuals and groups are reacting. It specifically explores the realities of the lived experience of those who make up London's ‘suspect community' and whether or not counter-terrorism policy can be linked to further marginalisation, radicalism, and extremism. By engaging with those that range from London's Metropolitan Police Service's Counterterrorism Command (SO15) to those that make up the radical fringe, an ethnographic portrait is developed. Through that ethnographic portrait the ‘ground truth' and complexities of the lived experience are made clear and add significant contrast to the aseptic policy environment.

The aim of this diploma thesis is the solution of the traffic situation in the city center of Havlíčkův Brod. Mainly the ground road number II/150 adjustment, which consist in the modification of the two-way traffic to one-way traffic organization in the streets Dolní, Žižkova and Na Ostrově by using the analogy of a roundabout layout, is solved within this thesis. All mentioned modifications simplify the traffic situation, improve the orientation and increase the security and the traffic flow mainly in relation to pedestrians and cyclists. Another part of this thesis is focused on revitalization of the public spaces in front of the community center called Ostrov and junction of existing cycle tracks situated on the both banks of the Sázava river. In relation to this topic the adjustment of rainwater sewerage system, low-voltage above ground network, public lighting, communication electric cables, fire brigade signal lights and low-pressure gas pipeline is also solved.