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New particle formation measurement down to 1.2 nm at noak
Holubová, Adéla ; Zíková, Naděžda ; Ždímal, Vladimír
Atmospheric aerosols influence Earths climatic system and human health. Role of aerosols in climatic system still includes uncertainties strongly influencing model simulations (Zhao et al. \n2018). One of the uncertainties is caused by secondary aerosol formation and their consequent growth. Nucleation of aerosol particles is a process determined by presence of aerosol precursors in atmosphere and by ambient atmospheric conditions (Dada et al. 2017). \nSince new particle formation (NPF) events have been observed in many types of environment (Kulmala et al. 2004), we have focused on NPF events at background station in the Czech Republic, representative for central European region. In this study we investigate NPF process of aerosol clusters from 1.2 nm in size.\n
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Formation and transformation of atmospheric aerosol in boundary layer
Holubová Šmejkalová, Adéla
Title: Formation and transformation of atmospheric aerosol in boundary layer Author: Mgr. Adéla Holubová Šmejkalová Institute: Institute for Environmental Studies Supervisor: Ing. Vladimír Ždímal, Dr., Institute of Chemical Process Fundamen- tals of the CAS Training workplace: Institute of Chemical Process Fundamentals of the CAS Abstract: The experimental measurement of aerosol clusters from 1.17 nm in size was carried out from August 2016 till December 2018 at the National Atmospheric Observatory Košetice. Atmospheric conditions leading to aerosol clusters stabili- zation, fresh particles formation and particle growth were analyzed. Data of days with no new particle formation confrmed the connection between mixing layer height development and decrease of total aerosol number concentration together with lower gaseous pollutant concentrations. On the contrary, new particle for- mation process overcomes dilution of the atmosphere by increasing the number of freshly nucleated particles. Only decreasing gaseous pollutant concentrations were observed during these events. The atmospheric boundary layer was high du- ring new particle formation events that can mean enrichment of the atmosphere by other components transported by long-range transport or some transfer from the free troposphere. The measurement in...
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Quality of care in the treatment of non-healing wounds (in wound management)
HOLUBOVÁ, Adéla
Introduction: Quality care for patients with non-healing wounds requires a systematic approach that should include a complete wound assessment and an objective description of the wound assessment. Goals: The goal was to assess how non-healing wounds were evaluated and documented in clinical practice at selected health care facilities and social care providers in the Czech Republic. To verify whether a clinical algorithm for evaluating non-healing wounds is available in clinical practice for selected providers and whether it is used. Methods: A mixed research design was used. The first research method was a cross-sectional retrospective study - content analysis of documentation for non healing wounds in clinical practice at selected health care and social care providers in the Czech Republic. Statistical methods of one-stage and two-stage sorting were used to evaluate the information obtained through content analysis of the data, and absolute and relative frequencies were determined through disaggregation. Identification of potential groups was performed by calculating a similarity matrix based on Gower metric followed by application of a hierarchical agglomerative clustering algorithm. One-stage and two-stage data classification was used to evaluate the information obtained from the questionnaire survey. Two-stage sorting was performed to assess the independence between the selected pairs of questions using appropriate tests according to the nature of the data obtained (chi-square test, Fisher's exact test, Kruskal-Walli's test followed by pairwise comparison) at a significance level of ? = 0.05. Results: The research was carried out in selected health care facilities and social care providers in the Czech Republic (3 faculty health service providers, 5 non-faculty health service providers, 4 social care providers and 4 ambulatory health service providers). 331 health documentations of patients with non-healing wounds were analyzed. The total number of questionnaires analyzed was 565. The resulting data of the cross-sectional retrospective study conducted in 14 selected health care and social care providers can be separated into three separate groups, with the highest quality of wound assessment being the nursing documentation of wound healing consultants, in which the most frequent use of objective scales and the highest number of assessment parameters were verified. Use of the Clinical algorithm was only confirmed in non-faculty healthcare providers. More frequent use of the Clinical algorithm was verified when a wound healing consultant was present (p <0.001; chi-square test). From the outcome data of the questionnaire study carried out in 11 selected health care facilities and social care providers, it was validated that statistically significant differences in the wound documentation process were most frequently demonstrated between faculty and non-faculty health care providers (p <0.05; chi-square test). Respondents working at health care faculty-based facilities rated the following items as more significant: type, etiology, wound location and size, wound bed, wound infection continuum, granulation quality assessment, wound odor, and comorbidities. Conclusion: It was verified that the process of assessment of non-healing wound parameters was very inconsistent. The recommended procedure for assessment of non-healing wounds was not properly followed and accepted in the clinical practice by the assessed care providers. We verified that the presence of a wound healing consultant was associated with the more frequent use of objective wound assessment scales to document wound care and condition. This study is educational, informative and pragmatic in character.
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Formation and transformation of atmospheric aerosol in boundary layer
Holubová Šmejkalová, Adéla ; Ždímal, Vladimír (advisor) ; Řezáčová, Daniela (referee) ; Hrubý, Jan (referee)
Title: Formation and transformation of atmospheric aerosol in boundary layer Author: Mgr. Adéla Holubová Šmejkalová Institute: Institute for Environmental Studies Supervisor: Ing. Vladimír Ždímal, Dr., Institute of Chemical Process Fundamen- tals of the CAS Training workplace: Institute of Chemical Process Fundamentals of the CAS Abstract: The experimental measurement of aerosol clusters from 1.17 nm in size was carried out from August 2016 till December 2018 at the National Atmospheric Observatory Košetice. Atmospheric conditions leading to aerosol clusters stabili- zation, fresh particles formation and particle growth were analyzed. Data of days with no new particle formation confrmed the connection between mixing layer height development and decrease of total aerosol number concentration together with lower gaseous pollutant concentrations. On the contrary, new particle for- mation process overcomes dilution of the atmosphere by increasing the number of freshly nucleated particles. Only decreasing gaseous pollutant concentrations were observed during these events. The atmospheric boundary layer was high du- ring new particle formation events that can mean enrichment of the atmosphere by other components transported by long-range transport or some transfer from the free troposphere. The measurement in...
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Source apportionment of equivalent black carbon (ebc) at a regional blackground site in central europe
Mbengue, Saliou ; Šerfözö, Norbert ; Schwarz, Jaroslav ; Zíková, Naděžda ; Holubová, Adéla ; Holoubek, I.
This study focuses on a 5-year measurement of equivalent Black carbon (EBC) at a regional background site in Central Europe. The aim is to identify the potential sources of EBC, especially fossil fuel (ff) and biomass burning (bb). Measurements of EBC in PM10 were performed from September 2012 to December 2017 at NAOK (National Atmospheric Observatory Košetice, 49°35ʹ N, 15°05ʹ E), central Czech Republic, with a 7-wavelength aethalometer (AE31, Magee Scientific). The aethalometer model, based on the wavelength dependence of light absorption (Angstrom coefficient), has been used to estimate EBCbb (EBC from biomass burning) and EBCff (EBC from traffic). The influence of local and distant sources has been investigated using the Conditional Probability Function (CPF) and Backward Trajectories Cluster Analysis (BTCA).\nClear seasonal, diurnal and weekly variations of EBC were observed at the NAOK that could be related to the sources fluctuations and transport characteristic. The higher concentrations of EBC were measured during winter (1.00 ±0.87 μg m-3) in comparison with summer (0.44 ±0.29 μg m-3).\n
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Plný tet: SKMBT_C22020011314380 - PDF
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A 5 year´s source apportionment study of black carbon from biomass burning and fossil fuel combustion at a rural background site
Mbengue, Saliou ; Šerfözö, Norbert ; Schwarz, Jaroslav ; Zíková, Naděžda ; Holubová, Adéla ; Holoubek, Ivan
The impacts of Black Carbon (BC) on adverse public health and Earth’s climate system have been recognized and evidenced in recent decades. Most of the studies on BC were conducted in urban/traffic areas. There are relatively few studies using real-time measurements of BC at rural background areas, especially in Central Europe. This study is a 5-year characterization of BC from biomass burning (BCbb) and fossil fuel combustion (BCff) at the National Atmospheric Observatory Košetice (49°35ʹ N, 15°05ʹ E), in central Czech Republic. The measurements of BC in PM10 were performed at 4 m above the ground with a multiple wavelength aethalometer (AE31, Magee Scientific). Paralell measurement of trace gases (NO2, NOx and SO2), biomass burning tracers (levoglucosan and mannosan) and meteorological parameters (temperature, wind speed and direction) were also performed at the station.
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Plný tet: SKMBT_C22019110512331 - PDF
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Origin of Atmospheric Aerosol Based on Data with Different Time Resolution at the National Atmospheric Observatory Košetice.
Pokorná, Petra ; Zíková, Naděžda ; Lhotka, Radek ; Vodička, Petr ; Makeš, Otakar ; Mbengue, Saliou ; Holubová Šmejkalová, Adéla ; Schwarz, Jaroslav ; Ondráček, Jakub ; Ždímal, Vladimír
To improve the air quality the underlying causalities must be well understood,particularly when it comes to aspects such as PM concentration, sources and their origin. The aim of this work was to determine air pollution origin at NAOK based on atmospheric aerosol (AA) data of different time resolution measured during intensive summer campaing.
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Plný tet: SKMBT_C22019110512031 - PDF
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ACTRIS - Contribution of the Czech Republic: National and Central Facilities.
Ondráček, Jakub ; Holubová, Adéla ; Komínková, Kateřina ; Vítková, Gabriela ; Schwarz, Jaroslav ; Klánová, J. ; Holoubek, Ivan ; Váňa, M. ; Ždímal, Vladimír
ACTRIS (Aerosols, Clouds and Trace gases Research Infrastructure) is an initiative gathering partners all over Europe concentrating on high-quality observations of different atmospheric processes. ACTRIS aims to provide high quality open access data of aerosols, clouds and trace gases and to create a platform for researchers to combine their efforts in resolving the most important environmental challenges (such as air quality, health, climate change, etc.). It is a logical continuation of 15 years of development funded by both Member States and the European Commission through the Research Infrastructure programme (including EARLINET, EUSAAR, CREATE and Cloudnet). ACTRIS has become an important pan-European research infrastructure in 2016 by being accepted into ESFRI (The European Strategy Forum on Research Infrastructure) Roadmap. Currently the ACTRIS is in the phase of becoming pan-European research infrastructure with its own legal entity and operational structure, being supported by two EU projects (ACTRIS-2 and ACTRIS PPP – Preparatory Phase Project).
Fulltext: content.csg - PDF
Plný tet: SKMBT_C22018110212490 - PDF
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