scholarly journals POSSIBILITIES OF THE USE OF WORKING SELF-CONTAINED BREATHING APPARATUSES FILTRATING CARBON MONOXIDE IN THE PRACTICE OF MINE RESCUE SERVICES

2017 ◽  
Vol 63 (3) ◽  
pp. 30-35
Author(s):  
Zdeněk Pavelek
Keyword(s):  
Carbon Monoxide ◽  
Czech Republic ◽  
Rapid Decline ◽  
The Czech Republic ◽  
Rescue Service ◽  
Rescue Services ◽  
Long Time ◽  
Higher Temperature ◽  
High Concentrations ◽  
Mine Rescue

Abstract In the current practice of the Mining Rescue Service of the Czech Republic, since 2005, the insulated overpressure regenerative breathing apparatuses with a closed circuit and supply of medicinal oxygen are used as the backbone working breathing apparatuses. At the end of the year 2010, the compressed-air breathing apparatuses were introduced into the practice of the Mining Rescue Service of the Czech Republic, which, in precisely defined types of mine rescue service interventions and under precisely defined conditions, can replace the aforementioned backbone working insulated overpressure regenerative breathing apparatuses. Recently, mining rescue services in deep coal mines have been more and more often conducted under conditions of an irrespirable mine atmosphere containing high concentrations of carbon monoxide, but at the same time containing sufficient oxygen for the breathing physiology of mine rescuer (for example, interventions dealing with the disposal of machinery under conditions of occurrence of endogenous mining fire of coal). This fact, after a long time, has resumed again the discussion of miners' rescue experts about whether it would be possible to implement the use of breathing apparatuses filtrating carbon monoxide into practice by the Mining Rescue Services of the Czech Republic in order to ensure a sufficient level of safety for mining rescuers even in an unexpected and rapid decline of the oxygen amount in the mine air at the site of the mine rescue service. The benefit of the breathing apparatuses filtrating carbon monoxide is their significantly lower weight, long protection period and also significantly smaller dimensions and design variability of the device. The disadvantages are higher breathing resistances and a higher temperature of the air mass inhaled from the breathing apparatus filtrating carbon monoxide.

scholarly journals Harmful occurrence of Rosy rustic moth (Hydraecia micacea) (Noctuidae: Lepidoptera) on hop in the Czech Republic

2010 ◽  
Vol 41 (No. 4) ◽  
pp. 150-157 ◽  
Author(s):  
J. Šedivý ◽  
P. Born ◽  
J. Vostřel
Keyword(s):  
Czech Republic ◽  
Light Trap ◽  
Pheromone Traps ◽  
The Czech Republic ◽  
Elytrigia Repens ◽  
Sum Of Effective Temperatures ◽  
Long Time ◽  
Effective Temperatures

The Rosy rustic moth (<I>Hydraecia micacea</I>) has been a pest of hop in Czech hop regions for a long time. It causes most severe damages in hop gardens infested by quackgrass (<I>Elytrigia repens</I>) on waterlogged<B> </B>areas. Larvae emerge from the second half of April to the middle of May. The sum of effective temperatures (SET) necessary for hatching larvae has been determined to be 78.6C over a 4-year average. Young larvae first feed on leaves of quackgrass, and later move to hop plants where they feed inside the shoots and rootstocks. Occurrence and damage are<B> </B>most frequent at the edges of hop gardens and in places with anchorages between two hop gardens. The ichneumonid wasp <I>Ichneumon sarcitorius</I> and the fly <I>Lidella thompsoni</I> are the most common parasitoids of this pest. Numbers of males caught in pheromone traps were very low. More males were trapped near hop gardens typical for repeated harmful occurrence of the rosy rustic moth. Females trapped in a light trap from the second half of August to the last decade of September had already full-developed eggs in their ovaries.

Physical-Mechanical Aspects of Preparing Thermal Insulation Materials on the Basis of Liquid (Water) Glass

2014 ◽  
Vol 897 ◽  
pp. 117-120 ◽  
Author(s):  
Lenka Mészárosová ◽  
Rostislav Drochytka
Keyword(s):  
Czech Republic ◽  
Thermal Insulation ◽  
Liquid Water ◽  
Potential Application ◽  
Water Glass ◽  
Liquid Glass ◽  
Chemical Resistance ◽  
Expanded Perlite ◽  
The Czech Republic ◽  
Higher Temperature

In the Czech Republic, liquid glass is mainly used for painting areas with higher surface temperatures, such as bonding agent of heat-resistant concretes, which require higher chemical resistance; it is also used as additional damp proofing for buildings with damp brickwork. Globally, liquid glass is used with expanded perlite as thermal insulation for higher temperature (maximum application temperature of 650 °C). This paper should outline the possible preparation of such material in our conditions and verify, whether it is possible to achieve the bulk density for such material of up to 200 kg/m3, or the potential application of such material.

Adversary Voting in the Czech Chamber of Deputies (1993–2013)

2017 ◽  
Vol 13 (1) ◽  
pp. 99-122
Author(s):  
Petr Dvořák
Keyword(s):  
Time Series ◽  
Czech Republic ◽  
Success Rate ◽  
Major Change ◽  
The Czech Republic ◽  
Discrimination Capacity ◽  
High Concentrations ◽  
The Government ◽  
Chamber Of Deputies

AbstractThe paper explores the legislative unity of government and opposition blocs in the Czech Chamber of Deputies over a period of 20 years. As voting unity is usually rather low in the Czech Republic, temporarily high concentrations of votes by these blocs are linked to higher rates of conflict between the government and opposition. I use the Rice and UNITY indices to compare average unity scores of individual cabinets and also explorative time series of unity vectors in order to analyse bloc concentration, success rate, and increased conflict. The outcomes are relevant both as comprising a case study and methodological observations: (1) Broad differences in the logic of interaction are confirmed (e.g. caretaker cabinets show less conflict than standard cabinets). Although no universal trend (e.g. no transition from consensual to conflictual practice) is found, the Czech opposition became more concentrated and resorted to serial blocking tactics in the second decade; thus, a major change of behavior occurred after all. (2) The Rice and UNITY indices correlate considerably; UNITY’s discrimination capacity is not distorted significantly despite the nature of equilibria in the Chamber. Moreover; the UNITY index is able to easily distinguish contested votes not detectable by the Rice index alone.

scholarly journals Valuable Secondary Habitats or Hazardous Ecological Traps? Environmental Risk Assessment of Minor and Trace Elements in Fly Ash Deposits across the Czech Republic

2021 ◽  
Vol 13 (18) ◽  
pp. 10385
Author(s):  
Eliška Chmelová ◽  
Vojtech Kolar ◽  
Jiří Jan ◽  
Bruno M. Carreira ◽  
Andrea Landeira-Dabarca ◽  
...  
Keyword(s):  
Trace Elements ◽  
Czech Republic ◽  
Fly Ash ◽  
Environmental Risks ◽  
Final Decision ◽  
The Czech Republic ◽  
Minor And Trace Elements ◽  
Water Characteristics ◽  
Risk Indices ◽  
High Concentrations

Deposits of coal combustion wastes, especially fly ash, are sources of environmental and health risks in industrial regions. Recently, fly ash deposits have been reported as habitat surrogates for some threatened arthropods in Central Europe. However, the potential environmental risks of fly ash have not yet been assessed in the region. We analysed concentrations of 19 minor and trace elements in 19 lignite combustion waste deposits in the Czech Republic. We assessed their environmental risks by comparison with the national and EU legislation limits, and with several commonly used indices. Over 50% of the samples exceeded the Czech national limits for As, Cu, V, or Zn, whilst only V exceeded the EU limits. For some studied elements, the high-risk indices were detected in several localities. Nevertheless, the measured water characteristics, the long-term presence of fly ash, previous leaching by acid rains, and the low amount of organic matter altogether can infer low biological availability of these elements. We presume the revealed high concentrations of some heavy metals at some studied sites can be harmful for some colonising species. Nevertheless, more ecotoxicological research on particular species is needed for final decision on their conservation potential for terrestrial and freshwater biota.

scholarly journals Planning of Safety of Cities and Territory from the Point of View of Population Protection in the Czech Republic

2020 ◽  
Vol 12 (22) ◽  
pp. 9487
Author(s):  
Jiri Pokorny ◽  
Barbora Machalova ◽  
Simona Slivkova ◽  
Lenka Brumarova ◽  
Vladimir Vlcek
Keyword(s):  
Czech Republic ◽  
Spatial Planning ◽  
Point Of View ◽  
Public Utility ◽  
National Standards ◽  
National Standard ◽  
Primary Role ◽  
The Czech Republic ◽  
Long Time ◽  
Spatial Plan

Ensuring territorial safety is one of the state’s main tasks, and the public administration plays a primary role in fulfilling it. The safety and sustainability of a territory is ensured by, inter alia, safety planning, including spatial planning. Spatial planning contains safety requirements for population protection. The requirements for ensuring the safety of the population included in the spatial plan vary significantly between countries. The existing population protection requirements contained in the spatial plan have been unsatisfactory for a long time. The main issue is that they are out of date and difficult to apply. The article presents a new proposed method for determining requirements for the protection of the population, which is based on evaluating the risks in the cities and territory. The specific population protection requirements are determined based on the resulting risks and their scaling. The requirements are classified as general when the territory is not faced with external risks or specific when there are such risks. The method is applied to the conditions of the Czech Republic. In terms of national standard specifics, there are requirements in areas of public infrastructure, public utility buildings, and public benefit measures. The method for determining population protection requirements can be considered applicable in a general form by various countries if the national standards specifics or other aspects are taken into account.

Melodiarium Hymnologicum Bohemiae

2006 ◽  
Vol 15 (1) ◽  
pp. 85-86
Author(s):  
Paul Christiansen
Keyword(s):  
Czech Republic ◽  
Progress Report ◽  
Ministry Of Education ◽  
English Version ◽  
The Czech Republic ◽  
Work In Progress ◽  
Digital Database ◽  
Long Time

Melodiarium Hymnologicum Bohemiae is a digital database of facsimiles of sources of Czech, German and Latin sacred monody and is essentially sui generis; there are no other such digital databases of comparable scope for this repertory. Its address is www.firmadat.cz/melodiarium/, and the English version can be reached by clicking on the Union Jack icon. The idea of Czech musicologist Stanislav Tesař, MHB is an extremely ambitious project, which has involved a team of several Czech musicologists in its realization. It is now yielding the fruits of two three-year grants from the Czech Science Foundation and further support from the Ministry of Education, Youth and Sports of the Czech Republic, which has funded the project from its inception. The amount of work that has been accomplished here is considerable but the sheer volume of material dictates that the catalogue will be for a long time a work in progress – it will not be complete for perhaps a decade. There is still much work to do; therefore this account is really more of a progress report than a conventional review.

scholarly journals Hollow tree fire is a useless forest fire category

2018 ◽  
Vol 64 (1) ◽  
pp. 67-78 ◽  
Author(s):  
Ivan Chromek ◽  
Karolina Lukášová ◽  
Roman Berčák ◽  
Jan Vaněk ◽  
Jaroslav Holuša
Keyword(s):  
Czech Republic ◽  
Statistical Analysis ◽  
Detailed Analysis ◽  
Forest Fire ◽  
Natural Environment ◽  
Forest Fires ◽  
The Czech Republic ◽  
Rescue Service ◽  
Hollow Tree ◽  
Critical Consideration

AbstractIn the Czech Republic and Slovakia, the term “hollow tree fire“ was first used in a publication in 1956 without being well defined and was then uncritically used in other publications. The term refers to fires occurring in the rotted, inner trunks of trees. The main aim of the current study was to determine whether the term should be considered a useful category for the statistical analysis of forest fires. The nature and causes of fires from 2006–2015 were assessed by performing a detailed analysis of the Fire Rescue Service of the Czech Republic (FRS CR) database. The database included a total of 7,256 fires in the natural environment, but only 18 of these were hollow tree fires. Most hollow tree fires were initiated by human carelessness, and only three were initiated by lightning. Based on our critical consideration of fire attributes, hollow tree fires should not be considered a category of forest fire. The presence of rotten trees is, however, a serious problem because such trees represent long-lasting sources of fire in forest stands and because they complicate firefighting. The numbers of rotten trees in forests is increasing, and firefighters should be made aware of the complications of extinguishing fires involving rotten trees in forests.

scholarly journals Porovnání dynamiky jízdy zásahového požárního automobilu v městské aglomeraci Ostrava a okresního města Nový Jíčín

2020 ◽  
Vol 19 (2) ◽  
pp. 14-20
Author(s):  
Ladislav Jánošík ◽  
◽  
Ivana Jánošíková ◽  
Pavel Poledňák ◽  
Izabela Šudrychová
Keyword(s):  
Czech Republic ◽  
Driving Behavior ◽  
Fire Fighting ◽  
Urban Agglomeration ◽  
Area Coverage ◽  
The Czech Republic ◽  
Rescue Service ◽  
The Future ◽  
Type Water

The paper is focused on the evaluation and comparison of driving dynamics of the intervention of the first-exit fire truck type water tender at units of the Fire Rescue Service of the Czech Republic in the Moravian-Silesian Region. The aim of the comparison is to specify different driving characteristics both in the center of the Ostrava urban agglomeration, Fifejdy city part, and in the district town Nový Jičín. Professional telemetry, which was placed in the monitored vehicles, was used to obtain primary records of the driving behavior of emergency fire-fighting vehicles. These records were then evaluated with the telemetry supplier’s company software. Our findings should be reflected in the future calculations of driving times and the area coverage.

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