46 research outputs found

    The Quantification the Externalites in the Company

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    Bakalářská práce se zabývá externalitami - vedlejšími vlivy ekonomických rozhodnutí, resp. činností ekonomických subjektů, které nese někdo jiný než jejich původce. Práce popisuje časté druhy externalit, snaží se je kvantifikovat a navrhuje jejich řešení. Hledá možnosti podpory pozitivních a omezení vlivu negativních externalit na teoretické úrovni i na příkladu konkrétní firmy v kraji Vysočina.The Bachelor´s thesis deals with externalities – costs or benefits from economic decisions and trasactions, that parties, „external“ from the transactions, receive as a side-effect. The thesis concerns about common types of externalities, their evaluation and offers their solutions. It is looking for possibilities how to support the positive and reduce the negative influence of exteralities. This happens on both – theoretical level and an example of a firm from the Vysočina region.

    Temporal Trends of Persistent Organic Pollutants across Africa after a Decade of MONET Passive Air Sampling

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    The Global Monitoring Plan of the Stockholm Convention on Persistent Organic Pollutants (POPs) was established to generate long-term data necessary for evaluating the effectiveness of regulatory measures at a global scale. After a decade of passive air monitoring (2008-2019), MONET is the first network to produce sufficient data for the analysis of long-term temporal trends of POPs in the African atmosphere. This study reports concentrations of 20 POPs (aldrin, chlordane, chlordecone, DDT, dieldrin, endrin, endosulfan, HBCDD, HCB, HCHs, heptachlor, hexabromobiphenyl, mirex, PBDEs, PCBs, PCDDs, PCDFs, PeCB, PFOA, and PFOS) monitored in 9 countries (Congo, Ghana, Ethiopia, Kenya, Mali, Mauritius, Morocco, Nigeria, and Sudan). As of January 1, 2019, concentrations were in the following ranges (pg/m(3)): 0.5-37.7 (Sigma 6PCB), 0.006-0.724 (Sigma 17PCDD/F), 0.05-5.5 (Sigma 9PBDE), 0.6-11.3 (BDE 209), 0.1-1.8 (Sigma 3HBCDD), 1.8-138 (Sigma 6DDT), 0.1-24.3 (Sigma(3)endosulfan), 0.6-14.6 (Sigma 4HCH), 9.1-26.4 (HCB), 13.8-18.2 (PeCB). Temporal trends indicate that concentrations of many POPs (PCBs, DDT, HCHs, endosulfan) have declined significantly over the past 10 years, though the rate was slow at some sites. Concentrations of other POPs such as PCDD/Fs and PBDEs have not changed significantly over the past decade and are in fact increasing at some sites, attributed to the prevalence of open burning of waste (particularly e-waste) across Africa. Modeled airflow back-trajectories suggest that the elevated concentrations at some sites are primarily due to sustained local emissions, while the low concentrations measured at Mt. Kenya represent the continental background level and are primarily influenced by long-range transport

    Current use pesticides in soil and air from two agricultural sites in South Africa: Implications for environmental fate and human exposure

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    Concerns about the possible negative impacts of current use pesticides (CUPs) for both the environment and human health have increased worldwide. However, the knowledge on the occurrence of CUPs in soil and air and the related human exposure in Africa is limited. This study investigated the presence of 30 CUPs in soil and air at two distinct agricultural sites in South Africa and estimated the human exposure and related risks to rural residents via soil ingestion and inhalation (using hazard quotients, hazard index and relative potency factors). We collected 12 soil and 14 air samples over seven days during the main pesticide application season in 2018. All samples were extracted, purified and analyzed by high-performance liquid chromatography coupled with tandem mass spectrometry. In soils, nine CUPs were found, with chlorpyrifos, carbaryl and tebuconazole having the highest concentrations (up to 63.6, 1.10 and 0.212 ng g-1, respectively). In air, 16 CUPs were found, with carbaryl, tebuconazole and terbuthylazine having the highest levels (up to 25.0, 22.2 and 1.94 pg m-3, respectively). Spatial differences were observed between the two sites for seven CUPs in air and two in soils. A large dominance towards the particulate phase was found for almost all CUPs, which could be related to mass transport kinetics limitations (non-equilibrium) following pesticide application. The estimated daily intake via soil ingestion and inhalation of individual pesticides ranged from 0.126 fg kg-1 day-1 (isoproturon) to 14.7 ng kg-1 day-1 (chlorpyrifos). Except for chlorpyrifos, soil ingestion generally represented a minor exposure pathway compared to inhalation (i.e. <5%). The pesticide environmental exposure largely differed between the residents of the two distinct agricultural sites in terms of levels and composition. The estimated human health risks due to soil inges-tion and inhalation of pesticides were negligible although future studies should explore other relevant pathways

    Seasonal variations in air concentrations of 27 organochlorine pesticides (OCPs) and 25 current-use pesticides (CUPs) across three agricultural areas of South Africa

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    For decades pesticides have been used in agriculture, however, the occurrence of legacy organochlorine pesticides (OCPs) and current-use pesticides (CUPs) is poorly understood in Africa. This study investigates air concentrations of OCPs and CUPs in three South African agricultural areas, their spatial/seasonal variations and mixture profiles. Between 2017 and 2018, 54 polyurethane foam-disks passive air-samplers (PUF-PAS) were positioned in three agricultural areas of the Western Cape, producing mainly apples, table grapes and wheat. Within areas, 25 CUPs were measured at two sites (farm and village), and 27 OCPs at one site (farm). Kruskal-Wallis tests investigated area differences in OCPs concentrations, and linear mixed-effect models studied differences in CUPs concentrations between areas, sites and sampling rounds

    Personal care product use and lifestyle affect phthalate and DINCH metabolite levels in teenagers and young adults

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    Humans are widely exposed to phthalates and their novel substitutes, and considering the negative health effects associated with some phthalates, it is crucial to understand population levels and exposure determinants. This study is focused on 300 urine samples from teenagers (aged 12-17) and 300 from young adults (aged 18-37) living in Czechia collected in 2019 and 2020 to assess 17 plasticizer metabolites as biomarkers of exposure. We identified widespread phthalate exposure in the study population. The diethyl phthalate metabolite monoethyl phthalate (MEP) and three di (2-ethylhexyl) phthalate metabolites were detected in the urine of >99% of study participants. The highest median concentrations were found for metabolites of low-molecular-weight (LMW) phthalates: mono-n-butyl phthalate (MnBP), monoisobutyl phthalate (MiBP) and MEP (60.7; 52.6 and 17.6 μg/L in young adults). 1,2-cyclohexanedicarboxylic acid diisononyl ester (DINCH) metabolites were present in 68.2% of the samples with a median of 1.24 μg/L for both cohorts. Concentrations of MnBP and MiBP were similar to other European populations, but 5-6 times higher than in populations in North America. We also observed large variability in phthalate exposures within the study population, with 2-3 orders of magnitude differences in urinary metabolites between high and low exposed individuals. The concentrations varied with season, gender, age, and lifestyle factors. A relationship was found between high levels of MEP and high overall use of personal care products (PCPs). Cluster analysis suggested that phthalate exposures depend on season and multiple lifestyle factors, like time spent indoors and use of PCPs, which combine to lead to the observed widespread presence of phthalate metabolites in both study populations. Participants who spent more time indoors, particularly noticeably during colder months, had higher levels of high-molecular weight phthalate metabolites, whereas participants with higher PCP use, particularly women, tended to have higher concentration of LMW phthalate metabolites.Authors thank the Research Infrastructure RECETOX RI (No. LM2018121) and CETOCOEN EXCELLENCE (CZ.02.1.01/0.0/0.0/17_043/0009632) for a supportive background. The work was supported by the Operational Programme Research, Development and Innovation – project Cetocoen Plus (CZ.02.1.01/0.0/0.0/15_003/0000469) and the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 857560. This study has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 733032. We thank all collaborating field workers, laboratory and administrative personnel, and especially the cohort participants who invested their time and provided samples and information for this study. This study reflects only the authors’ view and the European Commission is not responsible for any use that may be made of the information it contains.S

    GWAS in practical cattle breeding in Czech Republic, single step method, genetic progress

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    Development of genetic evaluation of animals is permanent process. It was going from estimated breeding value (EBV) calculated by CC-test, across a BLUP – animal model and RR-TDM, to the genomic enhanced breeding value (GEBV) using genetic markers. Methods of genetic evaluation become a part of marketing strategies of insemination companies. Therefore all countries and association of breeders seek to be compatible with others. Now we are in a period of massive global implementation of genomic evaluation, which combines traditional BLUP with huge quantity of genetic SNP markers. Multi-step procedures are now usual in practice, which work with deregressed proofs. Development of methods attained to the single-step procedure (ssGBLUP) which overcomes some difficulties of previous methods, improves reliabilities of evaluation and compares all animals, genotyped and ungenotyped, in entire nation-wide population. Genomic evaluation influence above all young genotyped animals. In Czech Republic single-step procedure is routinely used for national evaluation of milk, linear type traits, reproduction and longevity. GEBVs are accompanied by genomic reliabilities. Genetic trends over last 20 years are in some traits different for genomic evaluation compared to traditional BLUP evaluation, although input data and genetic parameters (heritability) are the same and genotyped animals were only small proportion from entire evaluated population. Differences in genetic trends increase mainly in new batches of animals. Reason of it could be in the changed variability of breeding values and “genomic correction” of relationship between animals, which is expanded from genotyped animals to others individuals in a population. Keywords: genomic breeding value, single-step, genomic relationship, genetic trend, SNP ReferencesBauer, J. et al. (2014) Approximation of the reliability of single-step genomic breeding values for dairy cattle in the Czech Republic. Anim. Sci. Papers and Reports, 32, pp. 301-306.Bauer, J., Přibyl, J. and Vostrý, L. (2015) Contribution of domestic production records and Interbull EBV on approximate reliabilities of single-step genomic breeding values in dairy cattle. Czech J. Anim. Sci., 60, 263-267.Candrák, J., Kadlečík O. and Schaeffer L.R. (1997) The use of test-day model for Slovak cattle populations. In: Proc. 48th Annual Meeting of the European Association for Animal Production, Vienna, Austria, August 25–28.Christensen,  O.F. and Lund, M.S. (2010) Genomic prediction when some animals are not genotyped. Genet.Sel.Evol. 42, pp. 2.Fisher, R.A. (1918) The correlation between relatives in the supposition of Mendelianinheritance. Trans. Roy. Soc. Edinb. 52, pp. 399-433.            Fragomeni, B.O. et al. (2015) Hot topic: Use of genomic recursions in single-step genomic best linear unbiased predictor (BLUP) with a large number of genotypes. J. Dairy Sci., 98, pp. 4090-4094.Gao, H. et al. (2012) Comparison on genomic predictions using three GBLUP methods and two single step blending methods in the Nordic Holstein population. Genet. Sel.Evol. 44, pp. 8.Legarra A., Aguilar I. and Misztal, I. (2009) A relationship matrix including full pedigree and genomic information. J. Dairy Sci., 92, pp. 4656-4663.Masuda, Y. et al. (2016) Implementation of genomic recursions in single-step genomic best linear unbiased predictor for US Holsteins with a large number of genotyped animals. J. Dairy Sci., 99, pp. 1968-1974.Mendel, G.J. (1866) Versuche über Pflanzen-Hybriden. Verh. Naturforsch. Ver. Brünn 4, pp. 3–47 (1901, J. R. Hortic. Soc. 26, pp. 1–32).Meuwissen, T.H.E., Hayes, B.J. and Goddard, M.E. (2001) Prediction of total genetic value using genome-wide dense marker maps. Genetics, 157, pp. 1819–1829.Misztal, I., Legarra A. and Aguilar, I. (2009) Computing procedures for genetic evaluation including phenotypic, full pedigree, and genomic information. J. Dairy Sci., 92, pp. 4648–4655.Misztal, I. et al. (2013) Methods to approximate reliabilities in single-step genomic evaluation. J. Dairy Sci., 96, pp. 647-654.Pešek, P., Přibyl, J. and Vostrý, L. (2015) Genetic variances of SNP loci for milk yield in dairy cattle. J. Appl. Genet., 56, pp. 339-347.Přibyl, J. et al. (2014) Domestic and Interbull information in the single step genomic evaluation of Holstein milk production.  Czech J. Anim. Sci., 59, pp. 409-415.Přibyl, J. et al. (2015) Domestic estimated breeding values and genomic enhanced breeding values of bulls in comparison with their foreign genomic enhanced breeding values. Animal, 9, pp. 1635-1642.VanRaden, P.M. (2008) Efficient methods to compute genomic predictions. J. Dairy Sci., 91, pp. 4414–4423.VanRaden, P.M. et al. (2011) Genomic evaluations with many more genotypes. Genet. Sel.Evol. 43, pp. 10.Wright, S. (1921) Systems of mating. Genetics. 6, pp. 111-178.Zavadilová, L. et al. (2014) Single-step genomic evaluation for linear type traits of Holstein cows in Czech Republic. Anim. Sci. Papers and Reports vol. 32, pp. 201-208.

    NPAHs and OPAHs in the atmosphere of two central European cities: Seasonality, urban-to-background gradients, cancer risks and gas-to-particle partitioning

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    Derivatives of polycyclic aromatic hydrocarbons (PAHs) such as nitrated- and oxygenated-PAHs (NPAHs and OPAHs) could be even more toxic and harmful for the environment and humans than PAHs. We assessed the spatial and seasonal variations of NPAHs and OPAHs atmospheric levels, their cancer risks and their gas-to-particle partitioning. To this end, about 250 samples of fine particulate matter (PM2.5) and 50 gaseous samples were collected in 2017 in central Europe in the cities of Brno and Ljubljana (two traffic and two urban background sites) as well as one rural site. The average particulate concentrations were ranging from below limit of quantification to 593 pg m-3 for Σ9NPAHs and from 1.64 to 4330 pg m-3 for Σ11OPAHs, with significantly higher concentrations in winter compared to summer. In winter, the particulate levels of NPAHs and OPAHs were higher at the traffic site compared to the urban background site in Brno while the opposite was found in Ljubljana. NPAHs and OPAHs particulate levels were influenced by the meteorological parameters and co-varied with several air pollutants. The significance of secondary formation on the occurrence of some NPAHs and OPAHs is indicated. In winter, 27-47% of samples collected at all sites were above the acceptable lifetime carcinogenic risk. The gas-particle partitioning of NPAHs and OPAHs was influenced by their physico-chemical properties, the season and the site-specific aerosol composition. Three NPAHs and five OPAHs had higher particulate mass fractions at the traffic site, suggesting they could be primarily emitted as particles from vehicle traffic and subsequently partitioning to the gas phase along air transport. This study underlines the importance of inclusion of the gas phase in addition to the particulate phase when assessing the atmospheric fate of polycyclic aromatic compounds and also when assessing the related health risk.This project was supported by the European Union's H2020 Framework Programme (ICARUS project) under grant agreement No – 690105, by the Czech Science Foundation (#P503 20-07117S) and by the RECETOX (LM2018121) and ACTRIS-CZ (LM2018122) research infrastructures funded by the Czech Ministry of Education, Youth and Sports of the Czech Republic and the European Structural and Investment Funds (CZ.02.1.01/0.0/0.0/16_013/0001761 and CZ.02.1.01/0.0/0.0/16_013/0001315). Funding of the Slovenian Agency of research through a programme P1-0143 is acknowledged. H2020 ERA-PLANET (No. 689443) iGOSP project is also acknowledged.S

    Widespread pesticide distribution in the European atmosphere questions their degradability in air

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    Risk assessment of pesticide impacts on remote ecosystems makes use of model-estimated degradation in air. Recent studies suggest these degradation rates to be overestimated, questioning current pesticide regulation. Here, we investigated the concentrations of 76 pesticides in Europe at 29 rural, coastal, mountain, and polar sites during the agricultural application season. Overall, 58 pesticides were observed in the European atmosphere. Low spatial variation of 7 pesticides suggests continental-scale atmospheric dispersal. Based on concentrations in free tropospheric air and at Arctic sites, 22 pesticides were identified to be prone to long-range atmospheric transport, which included 15 substances approved for agricultural use in Europe and 7 banned ones. Comparison between concentrations at remote sites and those found at pesticide source areas suggests long atmospheric lifetimes of atrazine, cyprodinil, spiroxamine, tebuconazole, terbuthylazine, and thiacloprid. In general, our findings suggest that atmospheric transport and persistence of pesticides have been underestimated and that their risk assessment needs to be improved

    Selected components of violence from the view of caring staff

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    The title of my thesis is `Selected features of violence from the point of view of medical staff{\crq}. Whereas in the past violence in medical care was more likely to occur abroad, at present is has a growing tendency even in our country. Violence is not only a physical attack but occurs more often in verbal form. The thesis is divided into a theoretical and an empirical part. The theoretical part deals with explanation of the term aggression, types of aggression, personality of aggressor, aggressive patient and aggression management. The following part deals with interpersonal relationships in health care, relationships between a nurse and a patient, a nurse and another nurse, a nurse and a doctor. The term mobbing, its causes, aims and phases, are explained in the next part. Consequences of mobbing and defence against it are also mentioned. The objective of the thesis is to make a survey of frequency and types of attacks against medical staff by patients, nurses and an employer. Three hypotheses were set up which relate to given objectives. The first hypothesis assumes that probability of attack against medical worker varies depending on the workplace. The second hypothesis assumes that the most frequent type of violence is verbal abuse. The third hypothesis assumes that nurses are more threatened by mobbing than by bossing. The research set comprised of nurses and paramedics of Teaching hospital in Plzeň, Emergency medical service of the Plzeň region and the Centre of helicopter emergency medical service in Plzeň. The research was carried out by quantitative method, the questionnaire technique. The results were visualised using a pie chart and bar charts in MS Office Excel 2007. The objective of the thesis was accomplished. The research results confirmed the first hypothesis, i.e. that `probability of attack against medical worker varies depending on the workplace{\crq}. Differences between individual types of workplaces were proved, most attacks by patients occur in Anaesthesia-Resuscitation Department and Intensive Care Unit and by medical staff in Emergency medical service. The second hypothesis, i.e. `the most frequent type of violence is verbal abuse{\crq} was also confirmed because verbal abuse outnumbers physical attacks. The third hypothesis, i.e. that `nurses are more threatened by mobbing than by bossing{\crq} was also confirmed because the research results show that more problematic relationships are among individual medical staff than between medical staff and their superiors. All three hypotheses were confirmed and proved that violence in medical care does occur and that it occurs in considerable amount

    Buchlov castle and Buchlovice chateau - processing of maps and plans

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    Tématem této bakalářské práce je shromáždění a zpracování mapových a plánových podkladů pro zámek Buchlovice, hrad Buchlov a jejich okolí v období od 19. století až do poloviny 20. století. Jako významné materiály byly ke zpracování použity císařské povinné otisky map stabilního katastru, katastrální mapa z let 1869-1882 a první vydání Státní mapy odvozené 1:5000, dále plánová a fotografická dokumentace. Práce je doplněna také o současné fotografie, které slouží k zajímavému porovnání historického a současného stavu objektů. Pro zpracování byly využity metody georeferencování a vektorizace vybraných podkladů. Všechny shromážděné dokumenty vytváří ucelený souhrn poznatků, které nabízí možnosti dalšího využití a možných analýz. Mapové výstupy práce byly publikovány na webovém mapovém serveru.The subject of this Bachelor thesis is to collect and process map and plan sources for the Chateau Buchlovice, the Buchlov castle and their environs during the epoch of 19th- mid 20th century. Imperial Obligatory Imprints of the Stable Cadastre, cadastral map from 1869-1882 and first edition of derived State map, as well as plan and photographic documentation, were used herein as important sources. This work is also accompanied by contemporary photos, drawing interesting comparison between historic and recent objects condition. Georeferencing and vectorization of selected sources methods were applied for processing. All collected documents creates complete knowledge summary, offering a possibility of their subsequent application and prospective analyses. Map outputs of this work were published on the map server
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