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    Wyświetlanie 1-17 z 17
    Tytuł:
    Posiedzenia Naukowe Polskiego Towarzystwa Geologicznego w dobie pandemii SARS-CoV-2 (COVID-19)
    Polish Geological Society, history of geological science, on-line scientific session, COVID-19
    Autorzy:
    Sikora, Rafał
    Powiązania:
    https://bibliotekanauki.pl/articles/2074308.pdf
    Data publikacji:
    2022
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Polskie Towarzystwo Geologiczne
    historia nauk geologicznych
    sesja naukowa on-line
    COVID-19
    Polish Geological Society
    history of geological science
    on-line scientific session
    Opis:
    Scientific sessions are an important element of activity of the Polish Geological Society. The crisis in the organization of scientific sessions was caused by the SARS-C0V-2 (COVID-19) pandemic, during which most of the lectures were canceled. The response to the crisis of social contacts and the suspension of sessions during the pandemic were national scientific sessions on the occasion of the 100th anniversary of the Polish Geological Society. The on-line form was introduced as a new and universal way of organizing scientific sessions of the PGS. The initiative met with great interest of geologists in Poland and was very positively assessed by the respondents. Due to the success of national scientific sessions, they were permanently included in the calendar of scientific events in Poland.
    Źródło:
    Przegląd Geologiczny; 2022, 70, 4; 354--355
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The structure of the Silesian Beskid Block in the Vistula River source area in the Western Outer Carpathians (southern Poland)
    Autorzy:
    Sikora, Rafał
    Powiązania:
    https://bibliotekanauki.pl/articles/24201046.pdf
    Data publikacji:
    2023
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    Lineaments
    hidden fracture zone
    structural analysis
    Szczyrk Anticline
    Silesian Beskid Block
    Outer Carpathians
    Opis:
    This paper presents new results of a detailed structural analysis of the bedrock of the Vistula source area within the Silesian Beskids (Outer Western Carpathians, S Poland). The bedrock of the study area is composed of the Upper Cretaceous flysch series of the Upper Godula Beds and Lower Istebna Beds. The study area is located on the southern limb of the Szczyrk Anticline within the Silesian Beskid Block. The research is based on cartographic field work and remote sensing analysis of a digital elevation model from LiDAR data. The structural analyses were supported by the extraction of the topolineaments and their spatial analysis. The results presented show that the monoclinal bedrock structure of the study area can be characterized by a systematic joint pattern, which determined the existence of faults and fault zones. Moreover, detailed analyses show differences in fracturing of the sedimentary strata and the existence of hidden fracture zones, not visible in the previous map view. Most of the faults are related to an orthogonal joint system, whereas the transverse and longitudinal faults are connected with fold and thrust structures that are exposed in outcrops and reflected in the topography. Kinematic analysis shows that the NW–SE-trending transverse faults underwent dextral movements, while the ENE–WSW-trending longitudinal faults recorded sinistral displacements. Furthermore, older strike-slip and oblique-slip displacements along faults were overprinted by normal dip-slip faulting. The new tectonic and relief data show no existence of the Gościejów Syncline in the northern part of the study area, which was depicted on previous maps. In conclusion, normal faulting and damage of the bedrock along fracture zones are interpreted as being related to the posttectonic, gravitational collapse of the rock massif. Its detailed recognition is very important for the further study of relationships between bedrock structure and mass movement characteristics, such as the geometry and kinematics of landslides.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2023, 93, 2; 137--163
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zagrożenia obiektów budowlanych i infrastruktury komunikacyjnej na tle rozmieszczenia osuwisk w jednostkach administracyjnych Sudetów
    Threats for buildings and communication infrastructure in the context of landslides distribution in the administrative subdivision of the Sudetes (SW Poland)
    Autorzy:
    Sikora, Rafał
    Powiązania:
    https://bibliotekanauki.pl/articles/20055919.pdf
    Data publikacji:
    2022
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    osuwiska
    Sudety
    analiza przestrzenna
    ruchy masowe
    Dolny Śląsk
    landslides
    Sudety Mts.
    spatial analysis
    mass movements
    Lower Silesia
    Opis:
    The paper presents the results of research on the landslide distribution according to the administrativ subdivision of the Sudetes (SW Poland). It is the first comprehensive analysis of this problem for the Polish part of the Sudetes, which is based on the published data, cartographic materials and spatial databases. The index of landslide occurrence for each county has been calculated, and the number and types of buildings and roads located on landslides have been distinguished. The results were used for preliminary identification of hazards, which, in turn, provide information for the county governments, on various levels, useful for spatial planning and practical risk management.
    Źródło:
    Przegląd Geologiczny; 2022, 70, 9; 636-644
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pięć lat aktywności Sekcji Badań Strukturalnych i Geozagrożeń Polskiego Towarzystwa Geologicznego
    Five years of activity of the Structural Geology and Geohazards Research Group of the Polish Geological Society
    Autorzy:
    Sikora, Rafał
    Powiązania:
    https://bibliotekanauki.pl/articles/2074309.pdf
    Data publikacji:
    2022
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Polskie Towarzystwo Geologiczne
    PTG
    historia nauk geologicznych
    sekcja naukowa
    Polish Geological Society
    PGS
    history of geological science
    scientific section
    Opis:
    The Structural Geology and Geohazards Research Group (SRGR) of the Polish Geological Society (PGS) was established in 2017 on the initiative of employees of the Polish Geological Institute - National Research Institute, the University of Wrocław, and the Jagiellonian University in order to integrate structural geologists, exchange views and information, and undertake various forms of cooperation. Geologists from over a dozen Polish scientific and commercial institutions, as well as foreign ones, participate in the works of the section. The activity of the section focuses on improving the research skills of its members and supporting them in achieving the best possible research results. An important element of the section's work is the promotion of issues related to structural research and the dissemination of research results through organizations, and participation in national and international conferences. During the first five years of its activity, the section organized, among others, the 16th CETEG Meeting in 2018 in Rytro (southern Poland), and its members delivered several lectures at conferences organized by PGS and during the “Polish National Scientific Meetings of the Polish Geological Society”, which was organized on the 100th anniversary of the organization's existence.
    Źródło:
    Przegląd Geologiczny; 2022, 70, 4; 346--349
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Osuwiska w Sudetach
    Landslides in the Sudetes
    Autorzy:
    Sikora, Rafał
    Wojciechowski, Tomasz
    Powiązania:
    https://bibliotekanauki.pl/articles/2075936.pdf
    Data publikacji:
    2019
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    ruchy masowe
    cyfrowy model wysokościowy
    mapa podatności na osuwiska
    SW Poland
    mass movements
    digital elevation model
    landslide susceptibility map
    Opis:
    This paper presents the results of analysis of landslides distribution in the Sudetes (SW Poland). Our study was based on the analysis of the LiDAR-data digital elevation model and integrated with investigations of different factors for landslide development. The results of the study showed relationships between the spatial distribution of landslides and geology of their basement. For the areas built by Permo-Mesozoic and late Variscan sedimentary and volcanogenic rocks, the tectonic and lithological factors are predominant for landslide occurrences. The largest landslides have a tectonic affinity and represent a frontal type of geometry. The relationships between geological conditions and mass movements were also confirmed by the constructed landslide susceptibility map of the Sudetes.
    Źródło:
    Przegląd Geologiczny; 2019, 67, 5; 360--368
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Podmioty ekonomii społecznej i przedsiębiorstwa prywatne. Bariery współpracy
    Social economy entities and private enterprises. Barriers to cooperation
    Autorzy:
    Mielczarek-Żejmo, Anna
    Sikora, Rafał
    Powiązania:
    https://bibliotekanauki.pl/articles/2082310.pdf
    Data publikacji:
    2021
    Wydawca:
    Lubuskie Towarzystwo Naukowe
    Tematy:
    social economy
    market sector
    cross-sector cooperation
    ekonomia społeczna
    sektor rynku
    współpraca międzysektorowa
    Opis:
    Przedmiotem analiz jest współpraca międzysektorowa w obszarze ekonomii społecznej. Współpraca ta jest postrzegana jako ważny czynnik rozwoju ekonomii społecznej, stanowiącej jeden z mechanizmów zmiany społecznej i odpowiedź na wyzwania związane z wykluczeniem i dezintegracją społeczną. W niniejszym artykule sformułowano pytania o rodzaje barier współpracy pomiędzy podmiotami ekonomii społecznej i podmiotami sektora biznesu na podstawie przeglądu literatury przedmiotu. Odpowiedzi przynosi przegląd literatury. Ustalenia autorów pozwalają na sformułowanie trzech rodzajów barier współpracy międzysektorowej biznesu i ekonomii społecznej. Są to bariery instytucjonalne, mentalne i operacyjne.
    The study analyses cross-sector cooperation in social economy. This cooperation is perceived as an important factor in the development of social economy, which is one of the mechanisms of social change and an answer to challenges related to social exclusion and disintegration. This paper raises questions about the types of barriers to cooperation between social economy entities and business sector entities based on a literature review. The answers are provided by the literature review. The authors find that there are three types of barriers to cross-sector cooperation between business and social economy. These are institutional, mental and operational barriers.
    Źródło:
    Rocznik Lubuski; 2021, 47, 2; 216-231
    0485-3083
    Pojawia się w:
    Rocznik Lubuski
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Historia Oddziału Górnośląskiego Polskiego Towarzystwa Geologicznego
    History of the Upper Silesian Branch of the Polish Geological Society
    Autorzy:
    Labus, Małgorzata
    Sikora, Rafał
    Strzemińska, Katarzyna
    Powiązania:
    https://bibliotekanauki.pl/articles/2067544.pdf
    Data publikacji:
    2022
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Oddział Górnośląski PTG
    historia nauk geologicznych
    Polskie Towarzystwo Geologiczne
    PTG
    Upper Silesian Branch
    history of geological science
    Polish Geological Society
    PGS
    Opis:
    The Upper Silesian Branch of the Polish Geological Society (PGS) was established in 1962 as one of the first regional branches of the PGS. Due to the specificity of the region, geologists working in Upper Silesia were most often concerned with the exploration and exploitation of hard coal in the USCB, but also undertook research on the geology of the USCB margin, polymetallic deposits, hydrocarbons, hydrogeology, and environmental protection in areas of mining activities. These problems were expressed in the topics of PGS annual meetings, field sessions and seminars. During the 60 years of activity, five PGS meetings were organized, the topics of which concerned the latest achievements in geology in the region. Already in the first years of operation of the Upper Silesian Branch of PGS, it was noticed that a special feature of this branch is the considerable dispersion of geologists working in various cities of the voivodeship. However, despite the difficulties resulting from this fact, the Upper Silesian Branch is active and it has been consolidating the scattered community of geologists in the region of Upper Silesia since its establishment.
    Źródło:
    Przegląd Geologiczny; 2022, 70, 4; 319--325
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sto lat międzynarodowej współpracy Polskiego Towarzystwa Geologicznego
    100 years of international cooperation of the Polish Geological Society
    Autorzy:
    Ślączka, Andrzej
    Sikora, Rafał
    Waśkowska, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/2074317.pdf
    Data publikacji:
    2022
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Polskie Towarzystwo Geologiczne
    PGS
    historia nauk geologicznych
    współpraca
    Polish Geological Society
    history of geological science
    cooperation
    Opis:
    In the 100-year history of the Polish Geological Society (PGS), international activity has been very important element of its activity. Shortly after the formation of PGS in 1921, CBGA (1922) and INQUA (1928) were formed as a result of the activities of PGS members. In the post-WWII period, international cooperation was undertaken by both the Main Board of PGS, as well as regional branches and specialist sections. During this period, foreign activity was limited mainly to the countries of the Eastern Block (Czechoslovakia, East Germany, Hungary, Yugoslavia) and Austria. Nevertheless, the Ore Deposit Genesis Section and Palaeontological Section joined international organizations (IAGOD and IPA). The revival of international contacts took place in the 1990s. Cooperation was established with societies from the Baltic Countries, Albania and Bulgaria. The Polish Geological Society has become a member of AEGS and EFG and is affiliated with the AAPG. In the first two decades of the 21st century, PGS organized several international conferences: 12th MAEGS (2001), Pan-European Correlation of the epicontinental Triassic 4th Meeting (2007), GEO-Pomerania (2007), ICHNIA (2008), SEDIMENT (2009), 31st IAS Meeting of Sedimentology (2015) and 16th CETEG Meeting (2018). An important element of international cooperation has always been the participation of geologists from neighbouring countriesin the annual scientific meetings of PTGeol and symposia of specialist sections taking place in border areas. In this respect, the best cooperation in several decades was with colleagues from the Czech Republic, Slovakia, Germany, and after 2000 also from Ukraine. PGS grants the status of an honorary member of the Society to distinguished persons from abroad. Even before World War II, Maurice Lugeon became the first honorary member of PGS in history. In 100-year history ofPGS, 47persons from Poland and abroad received it, also members of PGS received status of an honorary member from other Geological Societies.
    Źródło:
    Przegląd Geologiczny; 2022, 70, 4; 282--291
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dzieje Oddziału Krakowskiego Polskiego Towarzystwa Geologicznego
    History of the Kraków Branch of the Polish Geological Society
    Autorzy:
    Waśkowska, Anna
    Sikora, Rafał
    Starzec, Krzysztof
    Ślączka, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/2074316.pdf
    Data publikacji:
    2022
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Krakowski Oddział PGS
    historia nauk geologicznych
    Polskie Towarzystwo Geologiczne
    Kraków Branch of the PGS
    history of geological science
    Polish Geological Society
    Opis:
    The Kraków Branch of the Polish Geological Society (PGS) was established in 1922 and is the oldest and largest regional branch of the PGS. Initially, it was managed directly by the PGS Main Board, and from 1963, it has its own board. From the beginning, it has been one of the most active centres of the PGS and supported the work of the PGS management board in organizational activities in the country and in foreign cooperation. During World War II, its members gave secret lectures, and in the post-war period, they took part in reactivating the PGS activities and establishing both other branches and most of the specialist sections of PGS. The branch organized about 30% of all annual PGS Scientific Meetings and several dozen other scientific symposia and popular scientific sessions. It was the centre to initiate the organization of Polish Geological Congresses in the 21st century. The Kraków Branch includes representatives of all scientific institutes from Kraków and beyond, dealing with Earth sciences.
    Źródło:
    Przegląd Geologiczny; 2022, 70, 4; 292--299
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zastosowanie metody K-Ar do oznaczenia wieku deformacji skał metaosadowych formacji Yargait terranu Zavkhan (Khasagt, Mongolia) : wstępne wyniki badań
    K-Ar dating of deformation of metasedimentary rocks from the Yargait Formation of the Zavkhan terrane (Khasagt Mountains, Mongolia) : preliminary results
    Autorzy:
    Sikora, Rafał
    Wójcik, Antoni
    Szczerba, Marek
    Bazarnik, Jakub
    Madej, Stanisław
    Powiązania:
    https://bibliotekanauki.pl/articles/2076208.pdf
    Data publikacji:
    2021
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    metoda K-Ar
    muskowit
    tektonika
    terran Zavkhan
    Mongolia
    środkowoazjatycki pas orogeniczny
    K-Ar dating
    muscovite
    tectonics
    Zavkhan terrane
    Central Asian Orogenic Belt
    Opis:
    The SW margin of the Zavkhan terrane is significant for research on Paleozoic amalgamation of the Central Asian Orogenic Belt (CAOB). The study area is located in the western part of the Khasagt Mountains, western Mongolia. We present a new preliminary K-Ar dating of metasedimentary rocks from the Yargait Formation which were deformed during collision of the Zavkhan terrane with the Lake Zone terrane. Our results include two dating that are similar to earlier data by other authors (Stípskáetal., 2010; Bold et al., 2016b). The first dating equal to 544.1 ±13.7 Ma can be interpreted as the age ofmetamorphism and the subduction of the SW margin ofthe Zavkhan terrane under the Lake Zone terrane during the late Ediacaran-early Cambrian. The second dating of 441.1 ±11.7 Ma indicates the Late Ordovician - Silurian regional extension event.
    Źródło:
    Przegląd Geologiczny; 2021, 69, 7; 448--453
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sto lat Polskiego Towarzystwa Geologicznego (1921– 2021)
    100 years of the Polish Geological Society (1921-2021)
    Autorzy:
    Sikora, Rafał
    Waśkowska, Anna
    Kowalczewska, Oliwia
    Krzywiec, Piotr
    Ploch, Izabela
    Powiązania:
    https://bibliotekanauki.pl/articles/2074323.pdf
    Data publikacji:
    2022
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Polskie Towarzystwo Geologiczne     historia nauk geologicznych
    polscy geolodzy
    Polish Geological Society
    history of geological science
    Polish geologists
    Opis:
    The Polish Geological Society (PGS) was established on April 24, 1921. The seat of the PGS Board is in Kraków, as the Jagiellonian University in Kraków was the most active centre of geological sciences before Poland regained independence in 1918. Forover100years, the main forms of the Society's activity have been annual conferences in various parts of Poland and the publication of the journal Annales Societatis Geologorum Poloniae. There are three main periods in the history of the Society. During the first period, covering the years 1921-1939, the activities of PGS focused on the integration of the geological community and the development of regional branches (Warszawa, Lwów, Borysław and Wilno). During this period, the tradition of annual scientific meetings of PGS in various parts of Poland was established. Additionally, PGS members were instrumental in establishing the Carpatho-Balkan Geological Association and the INQUA. The development of PGS was abruptly stopped in September 1939 by World War II, during which several dozens of Society's members lost their lives. The third period covers the post-war period. The most intense development of the society took place in the 1960s and 1970s, when membership reached almost 1,500 active members, and the attendance at the annual meetings was in the order of hundreds of participants, often including foreign guests. During this period, many regional branches and specialist sections were established. The society's activity was high also during the crisis years of the1980s. After the political changes in 1989-1990, PGS significantly developed international contacts. In the1990s, representatives of the Society were invited to AEGS, EFG and AAPG, which resulted in the organization of numerous international conferences. One of the most important initiatives of the 21st century was the organization of the Polish Geological Congresses in 2008, 2012 and 2016. The most important element of the Society's activities is still the very popular annual PGS Scientific Meetings together with the accompanying field trips and seminars.
    Źródło:
    Przegląd Geologiczny; 2022, 70, 4; 247--266
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rozwój badań osuwisk w Państwowym Instytucie Geologicznym
    Development of landslide research at the Polish Geological Institute
    Autorzy:
    Wójcik, Antoni
    Wojciechowski, Tomasz
    Wódka, Marcin
    Kaczorowski, Jarosłąw
    Kamieniarz, Sylwester
    Sikora, Rafał
    Kułak, Marcin
    Karwacki, Krzysztof
    Warmuz, Bartłomiej
    Perski, Zbigniew
    Powiązania:
    https://bibliotekanauki.pl/articles/2076090.pdf
    Data publikacji:
    2020
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    badania osuwisk
    geozagrożenia
    Państwowy Instytut Geologiczny
    System Osłony Przeciwosuwiskowej
    SOPO
    landslide research
    geohazards
    Polish Geological Institute
    Landslide Counteracting System
    Opis:
    The paper presents the history and latest achievements in landslide research at the Polish Geological Institute (PGI). Since the establishment of PGI in 1919, landslides have been investigated during geological mapping in the Carpathians and considered by engineering geologists. After the 2nd World War, the importance of landslide research becomes more and more important following each landslide catastrophic event. Since 2008, the research on landslide and mass movements has been carried out systematically at the PGI within the SOPO (Landslide Counteracting System) project framework. Since that time, the SOPO project has been developing from landslide mapping and recording into a large spatial database, a sophisticated monitoring system (including on-line data acquisition) and susceptibility analysis, and early warnings with prediction capabilities. SOPO plays an important role to local and national administration. Together with the legal component, it allows defining a strategy for landslide risk reduction in Poland. Recently, landslide research plays so important role at the PGI that a special department, called Geohazard Center, has been established within the PGI organizational structure.
    Źródło:
    Przegląd Geologiczny; 2020, 68, 5; 356--363
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The use of new technology to improve the quality of production on a CNC machine tool
    Autorzy:
    Gołębski, Rafał
    Sikora, Piotr
    Gnatowski, Adam
    Powiązania:
    https://bibliotekanauki.pl/articles/88568.pdf
    Data publikacji:
    2019
    Wydawca:
    Stowarzyszenie Menedżerów Jakości i Produkcji
    Tematy:
    CNC machine tool
    production
    quality
    technology
    obrabiarka CNC
    produkcja
    jakość
    technologia
    Opis:
    The article presents an analysis of the modification of the production process on a CNC machine tool. The process was modified by using a new deep hole drilling procedure. As a consequence, an improvement in the quality of manufactured elements in series production has been achieved. The applications were supported by metrological analysis of the product.
    Źródło:
    System Safety : Human - Technical Facility - Environment; 2019, 1, 1; 583-590
    2657-5450
    Pojawia się w:
    System Safety : Human - Technical Facility - Environment
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of Physiological Stress Experienced by Divers Maintaining an Upright Position on the Water Surface Depending on the Buoyancy Control Device
    Ocena obciążenia fizjologicznego nurka podczas utrzymywania się w pozycji pionowej na powierzchni w zależności od wykorzystywanego urządzenia ratunkowo-wypornościowego
    Autorzy:
    Żebrowska, Aleksandra
    Siermontowski, Piotr
    Mikołajczyk, Rafał
    Sikora, Marcin
    Łakomy, Olga
    Powiązania:
    https://bibliotekanauki.pl/articles/32716371.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Medycyny i Techniki Hiperbarycznej
    Tematy:
    diving
    buoyancy vest
    safety
    physical performance
    nurkowanie
    kamizelka ratunkowo-wypornościowa
    bezpieczeństwo
    wydolność fizyczna
    Opis:
    The knowledge of physiological reactions enabling a diver increasing the functional reserve in a life-threatening situation is not yet complete. It is suggested that the ability to adapt to prolonged stress experienced by divers maintaining an upright position on the water surface is associated with the diver’s individual characteristics and the type of the buoyancy control device. The purpose of this study was to perform a preliminary evaluation of physiological variables in divers wearing two different types of buoyancy control device and floating upright at the surface to determine the level of safety offered by each of them. The physiological variables were measured while participants wearing a classical dive vest and a wing dive vest. The oxygen uptake and heart rate measured after 30 minutes of experiment were significantly greater in participants using wing dive vest than classical dive vest. The results confirm the possibility of using physiological indicators to compare the fatigue and rescue function in divers depending on the buoyancy control device type.
    Dotychczas nie w pełni poznane są reakcje fizjologiczne, które wpływają na zdolność utrzymania się w warunkach zanurzenia w wodzie nurków w sytuacji zagrożenia. Sugeruje się, że zdolności przystosowawcze do długotrwałego obciążenia organizmu podczas utrzymywania się w pozycji pionowej na powierzchni mogą wynikać z indywidualnych predyspozycji nurka i stosowanych urządzeń ratunkowo-wypornościowych. Celem badań była ocena obciążenia fizjologicznego nurka w sprzęcie lekkim podczas utrzymywania się w pozycji pionowej na powierzchni w zależności od wykorzystywanego urządzenia ratunkowo - wypornościowego. W badanej grupie nurków zmierzono wskaźniki fizjologiczne podczas zanurzenia w wodzie w pozycji pionowej z utrzymaniem twarzy na powierzchni w dwóch różnych kamizelkach ratunkowo - wypornościowych tj.: klasycznej i typu skrzydło. Większe zapotrzebowania na tlen, przyspieszenie rytmu pracy i większe ryzyko obniżenia dostępności tlenu po trzydziestu minutach utrzymywania się na powierzchni wody stwierdzono w kamizelce typu skrzydło w porównaniu do kamizelki klasycznej. Wyniki badań niniejszej pracy potwierdzają możliwość wykorzystania wskaźników fizjologicznych do oceny funkcji ratunkowej urządzeń wypornościowo-ratunkowych u nurków.
    Źródło:
    Polish Hyperbaric Research; 2021, 3(76); 35-44
    1734-7009
    2084-0535
    Pojawia się w:
    Polish Hyperbaric Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of the configuration of the dive’s towed equioment on the lifeguguard physiological overload
    Autorzy:
    Mikołajczyk, Rafał
    Sikora, Marcin
    Łakomy, Olga
    Żebrowska, Aleksandra
    Siermontowski, Piotr
    Powiązania:
    https://bibliotekanauki.pl/articles/32875537.pdf
    Data publikacji:
    2022
    Wydawca:
    Polskie Towarzystwo Medycyny i Techniki Hiperbarycznej
    Tematy:
    water rescue
    diving
    rescue equipment
    buoyancy equipment
    fatigue
    Opis:
    The aim of the study was to determine the effects of rescue swimming on lifeguard cardiorespiratory system assessed based on heart rate (HR), lung ventilation (V̇E), oxygen uptake (V̇O₂) and blood lactate concentration (LA). Furthermore, we also investigated the possible impact of the rescue equipment of the towed diver on the lifeguard physiological overload and towing speed. Exercise variables were measured in lifeguards aged 25.5 ± 6. years before and immediately after the swimming a distance of 50 m with a person in tow with or without diving equipment. There were no significant effect of different protocols of towing on V̇O₂. The type of towing protocols have a significant effect on HR, V̇E/V̇O₂ ratio, and blood LA levels. The towing time and the average towing speed during simulated rescue operation were significantly different depending on the type of the towing person’s equipment. Towing a diver wearing only a dry suit significantly reduces the towing time, increases towing speed and may be result in better exercise tolerance and less fatigue for rescuer compared to towing a diver in a full classic or wing diving set.
    Źródło:
    Polish Hyperbaric Research; 2022, 4(81); 113-122
    1734-7009
    2084-0535
    Pojawia się w:
    Polish Hyperbaric Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Physico-chemical and rheological properties of gelatinized/freeze-dried cereal starches
    Autorzy:
    Krystyjan, Magdalena
    Ciesielski, Wojciech
    Gumul, Dorota
    Buksa, Krzysztof
    Ziobro, Rafał
    Sikora, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/972985.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    cereal starch
    gelatinization
    freeze-drying
    process
    Opis:
    The influence of gelatinization and freeze-drying process on the physico-chemical and rheological properties of cereal starches was evaluated, and it was observed that modified starches revealed an increased water binding capacity and solubility when compared to dry starches, while exhibiting the same amylose and fat contents. The molecular weights of starches decreased after modification which resulted in the lower viscosity of dissolved modified samples in comparison to native starch pastes. As it was observed by scanning electron microscopy modified starches were characterized by an expanded surface, a uniform structure and high porosity.
    Źródło:
    International Agrophysics; 2017, 31, 3; 357-365
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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