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Wyszukujesz frazę "Baran, Marta" wg kryterium: Autor


Wyświetlanie 1-8 z 8
Tytuł:
Mechanical Tests Applied to Structural Health Monitoring: An Overview of Previous Experience
Autorzy:
Baran, Marta
Nowakowski, Dominik
Lisiecki, Janusz
Kłysz, Sylwester
Powiązania:
https://bibliotekanauki.pl/articles/2105150.pdf
Data publikacji:
2020
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:
BVID
CFRP
composite damage
fatigue crack
SHM
Opis:
Laboratory for Materials Strength Testing (LMST) has been conducting accredited mechanical research for aviation from 2003. Among accredited procedures are e.g. low and high cycle fatigue tests, fracture toughness tests and fatigue crack growth rate tests. The main goal of them is obtaining materials constants and characteristics. However knowledge how to conduct these tests could be used also in other applications, for instance in the work on development of Structural Health Monitoring systems (SHM). When cracks propagate in a controlled way in laboratory conditions, it allows verifying the operation of a single sensor or a network of sensors. In this paper, an overview of mechanical tests carried out at the Laboratory for Materials Strength Testing within Air Force Institute of Technology (AFIT) work on research and development of SHM systems is presented. Specimens prepared from materials such as aluminum alloys (among other withdrawn PZL-130 Orlik TC-II aircraft) and CFRP composite were tested under different mechanical loads, i.e., cycle and impact loads. In the presented research, both constant amplitude and spectrum loads were applied.
Źródło:
Fatigue of Aircraft Structures; 2020, 12; 123--135
2081-7738
2300-7591
Pojawia się w:
Fatigue of Aircraft Structures
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative Study on Fatigue Life of CFRP Composites with Damages
Autorzy:
Baran, Marta
Synaszko, Piotr
Lisiecki, Janusz
Kłysz, Sylwester
Powiązania:
https://bibliotekanauki.pl/articles/97921.pdf
Data publikacji:
2019
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:
CAI
CFRP
compression
Compression After Impact
damage
drop-weight impact test
fatigue test
residual strength
Opis:
In this work, the compressive residual strength tests results, Compression After Impact (CAI), are presented. The specimens were made of carbon-epoxy prepreg E722-02 UHS 130-14. Two variants of specimens were tested: samples undamaged and samples with damage that was centrally introduced by a drop-weight impact, as per the ASTM D7136/7136M standard. An impactor with potential energy equal to 15J and the type of support required by the standard were used. The size of impacted damages, defined as an area of damage on a plane perpendicular to the impact direction, and the equivalent diameter were specified using the flash thermography method. The tests were performed using the fixtures manufactured according to the ASTM D7137/7137M standard. The specimens were compressed to determine the residual strength. This value was afterwards used to specify the force levels for the fatigue tests. The fatigue tests were carried out under force control – with a sinusoidal shape, stress ratio R equal to 0.1 and frequency f 1Hz. Maximum force in a loading cycle Pmax was being increased after each thousand of cycles N until its value was close to the residual strength determined in the previously mentioned tests. In this work, the following relationships were presented: force-displacement P-δ for both static and fatigue tests and displacement-loading cycles δ-N for fatigue tests. A method of conducting the fatigue tests of CFRP composite was proposed, in which both the CAI specimens and CAI fixture were used. This allowed researchers to accelerate making initial comparisons between the two groups of specimens with damages – grouped relative to the way of conditioning.
Źródło:
Fatigue of Aircraft Structures; 2019, 11; 28-38
2081-7738
2300-7591
Pojawia się w:
Fatigue of Aircraft Structures
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Examination of Honeycomb Core Compliance in Sandwich Structure
Autorzy:
Nowakowski, Dominik
Baran, Marta
Lisiecki, Janusz
Kłysz, Sylwester
Synaszko, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/97919.pdf
Data publikacji:
2019
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:
honeycomb core
horizontal stabilizer
MiG-29 fighter jet
static compression test
compliance
Opis:
The objective of the research presented in this paper was to determine the honeycomb core compliance of a sandwich structure of the horizontal stabilizer of the MiG-29 fighter jet in the static compression test. The study of the specimen was conducted based on the ASTM C365/C365M standard. The article presents the results of experimentally determined dependencies and strength parameters, i.e. the force-displacement dependence, the compressive modulus and the honeycomb core deformations.
Źródło:
Fatigue of Aircraft Structures; 2019, 11; 19-27
2081-7738
2300-7591
Pojawia się w:
Fatigue of Aircraft Structures
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
O projektowaniu cyklu lekcji na przykładzie Kiedyś jutro Anny Marii Gorgolewskiej
Autorzy:
Szymańska, Marta
Waligóra, Joanna
Plak, Marta
Baran, Magdalena
Kondek, Sylwia
Powiązania:
https://bibliotekanauki.pl/articles/782946.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
Opis:
*
Źródło:
Annales Universitatis Paedagogicae Cracoviensis. Studia ad Didacticam Litterarum Polonarum et Linguae Polonae Pertinentia; 2015, 6, 195; 43-72
2082-0909
Pojawia się w:
Annales Universitatis Paedagogicae Cracoviensis. Studia ad Didacticam Litterarum Polonarum et Linguae Polonae Pertinentia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of health behaviors of Polish Army soldiers in relation to demographic factors, body weight and type of Armed Forces
Autorzy:
Gaździńska, Agata
Baran, Paulina
Turczyńska, Marta
Jagielski, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/21375386.pdf
Data publikacji:
2023-11-13
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
obesity
soldiers
health behaviors
Polish Army
health-related behavior index
National Health Programme
Opis:
Objectives: The aim of this article is to assess the health behaviors of Polish Army soldiers participating in the National Health Programme 2016–2020 in relation to types of armed forces, BMI and selected demographic factors. Material and Methods: Anthropometric and questionnaire data were obtained in a group of 1229 soldiers of the Polish Armed Forces (PAF) from military units from all over Poland. Health behaviors patterns were assessed using the Health Behavior Inventory (HBI), developed by Juczyński. Results: The HBI of PAF soldiers was 79.9±12.68, indicating an average score. Statistically significant differences were found in the HBI values and in the individual categories of health behaviors according to the type of armed forces. The highest scores in each category of health behaviors were obtained by the Air Force (AF) soldiers. The lowest HBI score was obtained by the Land Forces and Territorial Defence Forces soldiers. Soldiers with higher education obtained significantly higher scores in such health categories as proper eating habits, preventive behaviors and health practices, compared to respondents with secondary education. Soldiers residing in cities had statistically significantly higher health behaviors intensities in all categories, compared to village residents. A significantly higher score in all health categories was noted in soldiers with normal body weight compared to those with diagnosed obesity. There was no significant relationship between the age of the respondents and health behaviors. Conclusions: The study found that factors such as type of armed forces, BMI, place of residence and education level were significant for the adoption of health behaviors by PAF. The level of health practices was significantly higher among AF soldiers compared to other types of armed forces. It seems necessary to further disseminate education on pro-health behaviors, especially among soldiers with obesity through participation in organized training and psychodietetic consultations as part of the National Health Programme.
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2023, 36, 4; 437-449
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Practical implications on ergonomic assessments resulting from EN16710-2—ergonomics methods: A methodology for work analysis to support design
Praktyczne implikacje dla analiz ergonomicznych w zarządzaniu projektami wynikające z normy EN 16710-2 Metody ergonomiczne. Metodyka analizy pracy wspierająca projektowanie
Autorzy:
Butlewski, Marcin
Czernecka, Wiktoria
Szczepaniak, Agata
Pojasek, Marta
Baran, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/415591.pdf
Data publikacji:
2019-09
Wydawca:
Małopolska Wyższa Szkoła Ekonomiczna w Tarnowie
Tematy:
ergonomic analysis
project management
work safety management
ergonomic design
analiza ergonomiczna
zarządzanie projektami
zarządzanie bezpieczeństwem pracy
projekt ergonomiczny
Opis:
Ergonomic workplace analysis is a basic element of every ergonomic project. In many cases, however, carried out in a fragmented and unstructured manner it gives an incomplete picture of the assessed work processes. Authors on the basis of their own experience and methodologies contained in EN 16710-2 Ergonomic methods—Part 2: Methodology of work analysis to support design, presented the procedure and the most important elements, the conclusion of which enables reliable ergonomic analysis. The key task in the field of ergonomic analysis is to determine the applicability of the data acquisition apparatus under specific conditions, which can be done by analyzing scientific publications or reports from professional literature. An important element of the report is also evidence that the assessment was carried out by a competent person to whom the Euro-Ergonomist institution can be used, or at least by such a person checked. It should also be ensured that the report contains evidence that a sufficiently large part of the system has been tested. Fragmentary analysis is possible as long as conclusions from it are not extended and areas not covered by it. A very important but often overlooked element of ergonomic analysis is the indication of how the project solved incompatibilities (which are an inherent element of almost every research procedure in the area of production). It allows to determine the validity of the inference based on the collected material, as well as to determine deviations from the applicable standards. The article also presents the method of triangulation as an element of protection against incorrect diagnosis of the method of work implementation.
Ergonomiczna analiza stanowisk pracy jest podstawowym elementem każdego ergonomicznego projektu. W wielu przypadkach jednak przeprowadzana w sposób fragmentaryczny i nieustrukturyzowany, daje niepełny i mylący obraz ocenianych procesów pracy. Autorzy na podstawie własnych doświadczeń i metodyk zawartych w EN 16710-2 Metody ergonomiczne – Część 2: Metodologia analizy pracy do wspomagania projektowania przedstawili sposób postępowania i najważniejsze elementy, których zawarcie umożliwia rzetelną analizę ergonomiczną. Wskazano kluczowe elementy analizy ergonomicznej, którymi są: (1) ustalenie zastosowalności aparatu pozyskiwania danych w określonych warunkach, (2) zastosowanie triangulacji w stosowanych metodach badawczych, zarówno w analizie jakościowej, jak i ilościowej, (3) dobór odpowiedniej części analizowanego systemu, a w przypadku analizy fragmentarycznej zapewnienie przenoszenia wniosków jedynie na obszary nią objęte. Bardzo ważnym, aczkolwiek często pomijanym elementem analiz ergonomicznych jest wskazanie, w jaki sposób rezultaty związane z realizacją projektu przyczyniły się do rozwiązania problemów niezgodności, które są inherentnym elementem prawie każdego postępowania badawczego w obszarze organizacji pracy. Pozwala to na ustalenie, na ile zasadne jest wnioskowanie na podstawie zebranego materiału, a także ustalenie odchyleń od obowiązujących standardów. W artykule przedstawiono również schemat zarządzania przedsięwzięciami, tak aby uzyskiwane mogły być kontekstowe cele ergonomiczne.
Źródło:
Zeszyty Naukowe Małopolskiej Wyższej Szkoły Ekonomicznej w Tarnowie; 2019, 3(43); 127-142
1506-2635
Pojawia się w:
Zeszyty Naukowe Małopolskiej Wyższej Szkoły Ekonomicznej w Tarnowie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Healthcare workers’ occupational exposure to bloodborne pathogens: A 5-year observation in selected hospitals of the Małopolska province
Autorzy:
Różańska, Anna
Szczypta, Anna
Baran, Magda
Synowiec, Edyta
Bulanda, Małgorzata
Wałaszek, Marta
Powiązania:
https://bibliotekanauki.pl/articles/2178886.pdf
Data publikacji:
2014-10-01
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
Health care workers
occupational exposure
bloodborne pathogens
Opis:
Objectives: The study presents data concerning occupational exposures among the staff of 5 hospitals in the Małopolska province in 2008–2012, taking into account the frequency and circumstances of exposure formation, occupational groups of hospital workers, as well as diversification of the reported rates in subsequent years between the hospitals and in each of them. An additional objective of the analysis was to assess the practical usefulness of the reported data for planning and evaluation of the effectiveness of procedures serving to minimize the risk of healthcare workers’ exposure to pathogens transmitted through blood. Material and Methods: Data were derived from occupational exposure registries kept by 5 hospitals of varying sizes and operational profiles from the Małopolska province from the years 2008–2012. Results: Seven hundred and seventy-five cases of exposure were found in a group of 3165 potentially exposed workers in the analyzed period. Most cases were observed in nurses (68%) and these were mainly various types of needlestick injuries (78%). Exposure rates with respect to all workers ranged from 2.6% to 8.3% in individual hospitals, but the differences in their values registered in the hospitals in subsequent years did not bear any statistical significance, in a way similar to the rates calculated separately for each occupational group. Conclusions: There was no upward or downward trend in the number of reported cases of exposure to bloodborne pathogens in the studied period in any of the hospitals. Statistically significant differences in the percentages of exposures were reported between individual hospitals in some years of the analyzed period, which confirms the need for registries in individual units in order to plan and evaluate the effectiveness of preventative measures.
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2014, 27, 5; 747-756
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Trudności diagnostyczne w rozpoznawaniu chorób alergicznych
Difficulties in the diagnosis of allergic diseases
Autorzy:
Napiórkowska-Baran, Katarzyna
Tykwińska, Marta
Kołodziejczyk-Pyrzyk, Joanna
Bąkowska-Kocik, Natalia
Zacniewski, Robert
Bartuzi, Zbigniew
Powiązania:
https://bibliotekanauki.pl/articles/1034493.pdf
Data publikacji:
2018
Wydawca:
Oficyna Wydawnicza Mediton
Tematy:
alergeny ukryte
diagnostyka alergii
ograniczenia testów skórnych
Opis:
Diagnosis of allergic diseases is one of the most difficult in medicine. Detailed gathering of a medical history, especially if it concerns food allergy is a big challenge, among others due to the amount and variety of food intake, the presence of cofactors, or the use of food additives. The problem is also the presence of the so-called hidden allergens. Diagnostic process is also complicated by the lack of precise research tools, which are characterized by 100% sensitivity and specificity. Each of the methods used has its limitations, and the negative result is not the basis for the exclusion of allergies. The article presents problems that may be encountered by a doctor diagnosing allergic diseases. The authors hope that it will be helpful, especially in those patients whose clinical manifestations do not correlate with the results of the tests. The more so that allergic diseases are an increasing problem that affects not only the patient himself, but they also constitute a social and economical problem. The symptoms of allergic diseases are so troublesome for patients that they have been combined into one disease entity known as: allergic irritability syndrome.
Diagnostyka chorób alergicznych należy do najtrudniejszych w medycynie. Dużym wyzwaniem jest prawidłowe zebranie wywiadu, szczególnie jeżeli chodzi o alergię pokarmową m.in. ze względu na ilość i różnorodność spożywanych pokarmów, obecność kofaktorów, czy stosowanie dodatków do żywności. Problemem jest również obecność tak zwanych alergenów ukrytych. Diagnostykę komplikuje również brak precyzyjnych narzędzi badawczych, które charakteryzują się 100% czułością i swoistością. Każda ze stosowanych metod ma swoje ograniczenia, a ujemny wynik nie jest podstawą do wykluczenia alergii. W artykule przedstawiono problemy, z którymi może spotkać się lekarz zajmujący się diagnostyką alergii. Autorzy mają nadzieję, że bę- dzie on pomocny, szczególnie u tych chorych, u których obraz kliniczny nie koreluje z wynikiem otrzymywanych badań. Tym bardziej, że choroby alergiczne stanowią coraz większy problem, który dotyczy on nie tylko samego chorego, ale również stanowią problem społeczny i ekonomiczny. Objawy chorób alergicznych są na tyle uciążliwe dla pacjentów, że połączono w jedną jednostkę chorobową określaną jako: allergic irritability syndrome.
Źródło:
Alergia Astma Immunologia - przegląd kliniczny; 2018, 23, 2; 79-85
1427-3101
Pojawia się w:
Alergia Astma Immunologia - przegląd kliniczny
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-8 z 8

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