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    Wyświetlanie 1-8 z 8
    Tytuł:
    Wplyw porazenia przez Heterobasidion annosum wybranych drzewostanow sosnowych i swierkowych na powstanie wiatrolomow i wiatrowalow w 1999 i 2000 roku
    Autorzy:
    Lakomy, P.
    Cieslak, R.
    Rodak, W.
    Kostrzewski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/819435.pdf
    Data publikacji:
    2001
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    wiatrowaly
    drzewostany sosnowe
    wystepowanie
    grzyby
    czynniki chorobotworcze
    wiatrolomy
    drzewostany swierkowe
    lesnictwo
    Heterobasidion annosum
    fitopatologia lesna
    Źródło:
    Sylwan; 2001, 145, 07; 43-54
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Lowering of exhaust emission in modern two - stroke engine
    Autorzy:
    Mitianiec, W.
    Rodak, Ł.
    Powiązania:
    https://bibliotekanauki.pl/articles/246651.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    transport
    experiments
    combustion engines
    air pollution
    Opis:
    In the article the results of experimental tests carried out on the modified SI two-stroke experimental combustion engine with direct fuel injection system and the prototype of the oxidizing catalytic converter are presented. Volumetric exhaust emissions of the most important chemical components are many times smaller than standard limits of gaseous emissions given by EU directive for the new stationary engines applied in non-road vehicles and machines Spark ignition two-stroke engine fitted with a catalytic reactor is characterized by high temperature of exhaust gases, which the energy may be used in cogeneration systems. The paper presents the test stand, volumetric concentration of the main components of exhaust gases, results of converted emissions and fuel consumption as a function of air excess coefficient at chosen rotational speeds together with the assessment of the test results. There is decreasing of CO and HC emission during increasing of air excess coefficient and a strong increase of CO2 behind the catalytic converter. Application of catalytic converter in the outflow system together with direct fuel injection of the tested two-stroke engine enables to achieve values of exhaust emission of main toxic chemical components close to automobile four stroke engines. The paper presents also the comparison of exhaust gas emission of this engine with other engines equipped with different fuelling systems. Presented work is the successor of a wide range of research work in the field of development of modern two-stroke engines carried out in the Cracow University of Technology.
    Źródło:
    Journal of KONES; 2012, 19, 2; 337-344
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Control problems in a turbocharged spark-ignition engine
    Autorzy:
    Mitianiec, W.
    Rodak, Ł.
    Powiązania:
    https://bibliotekanauki.pl/articles/246107.pdf
    Data publikacji:
    2011
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    transport
    combustion engine
    turbocharging
    Opis:
    The paper presents the problems of adapting of the charge system to the standard four stroke spark ignition engine Toyota Yaris 1300 cm3 with compression ratio 10.5. The main problem in charged spark ignition engine is control of air-fuel ratio near stoichiometric values at different boost pressure in order to obtain higher torque at the same level of specific fuel consumption and exhaust gas emission. Charging of such engine is connected with the problem of knock in the medium and high values of load at low engine speeds. Higher boost pressure leads to abnormal combustion process and to knocking. The paper describes the boost pressure control algorithm which enables to prevent the knock, so the engine can work near the knock boundary. The article includes a description of the engine, the method of charging and test bench, which was built to verify the proposed control algorithm for boost pressure. The publication contains the results of different tests conducted on the supercharged engine stand by the proposed algorithm and measured parameters were torque, fuel consumption and volumetric concentration of the main exhaust gas components. Applying of turbocharger in SI engines leads to knocking. The controlling of combustion process in SI engine is realized on the adjustment of WG or VTG to decrease or increase the rotational speed of turbocharger. Such control causes the engine work near boundary of knocking.
    Źródło:
    Journal of KONES; 2011, 18, 3; 269-277
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Polarization-Induced Band Inversion in In-Rich InGaN/GaN Quantum Wells
    Autorzy:
    Łepkowski, S.
    Bardyszewski, W.
    Rodak, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1195356.pdf
    Data publikacji:
    2014-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    73.21.Fg
    73.22.Dj
    Opis:
    We theoretically study the polarization-induced band inversion phenomenon in c-plane In-rich InGaN/GaN quantum wells. Our calculations performed using the k·p method with the 8×8 Rashba-Sheka-Pikus Hamiltonian for the structures with the indium content between 90% and 100% show that the reordering of the conduction and valence bands occurs for the quantum well widths below the theoretical values of critical thickness for InGaN layers pseudomorphically grown on GaN substrates.
    Źródło:
    Acta Physica Polonica A; 2014, 126, 5; 1154-1155
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental investigations in direct injected SI two-stroke engine
    Autorzy:
    Mitianiec, W.
    Forma, M.
    Rodak, Ł.
    Powiązania:
    https://bibliotekanauki.pl/articles/246360.pdf
    Data publikacji:
    2010
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    transport
    combustion engines
    direct fuel injection
    Opis:
    The paper presents the latest experimental results of smali power two-stroke engine with electronic controlled high pressure direct fuel injection. The work is one of the first solutions in such engines in Poland and was provided on industrial engine with capacity 115 cm3. A special experimental eąuipment and electronic control of fuel dose and injection phases enables to obtain a big decrease of specific fuel consumption and exhaust gas emission, particularly hydrocarbons with the same level of torque. Applying of direct injection in small power two-stroke engine gives possibility tofulfil exhaust emission reguirements. The paper presents the experimental stand and fuel injection system with results of main engine parameters and emission of chosen chemical components. The configuration of injection system was designed on the basis of previous simulation test in GT-Power and KIVA3V. Earlier fuel injection influences on better evaporation and mixture formation with small stratification, which enables full mixture combustion. Direct fuel injection in two-stroke engine decreases hydrocarbon emission 10 times and specific fuel consumption about 30% in comparison to carburetted engine. Exhaust gas emission is on level off our stroke engines with low emission of NOx. The engine was equipped with conventional automotive injector, which was not suited to small cylinder capacity. . On the basis of the simulations and experimental tests a main conclusion can be drawn, that the spray guided direct fuel injection is a way to obtain cleaner and more effective two-stroke engine for small power units.
    Źródło:
    Journal of KONES; 2010, 17, 2; 335-342
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study of dislocation substructures in high-Mn steels after dynamic deformation tests
    Autorzy:
    Śmiglewicz, A.
    Moćko, W.
    Rodak, K.
    Bednarczyk, I.
    Jabłońska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1058094.pdf
    Data publikacji:
    2016-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.05.Bx
    81.40.-z
    68.37.Ma
    46.70.-p
    Opis:
    The article presents the dynamic mechanical properties of two types of high manganese austenitic TWIP steels. The investigations were carried out for the wide range of strain rates from 10¯² s¯¹ up to 4×10³ s¯¹ using servo-hydraulic testing machine and split Hopkinson bar for the quasi-static and dynamic loading regime, respectively. The mechanical properties at different strain rates like yield strength and true stress were calculated out on the base of the results of impact tests. In the next step, the microstructure of the analyzed steels after different deformation rates were observed by scanning transmission electron microscopy technique in order to disclose a dislocation structures and mainly the TWIP effect. In the studies observed that with the strain rate increasing yield strength as well as true stress for 0.3 true strain increasing in both steels. The microstructure observations reveal the influence of strain rate on the structure evolution for analyzed steels.
    Źródło:
    Acta Physica Polonica A; 2016, 130, 4; 942-945
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Exposure to ticks and undertaking Lyme borreliosis prevention activities among students from Poland and Slovakia
    Autorzy:
    Pańczuk, A.
    Tokarska-Rodak, M.
    Mikulakova, W.
    Kendrova, L.
    Magurova, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/2083080.pdf
    Data publikacji:
    2019
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    Polska
    Slovakia
    students
    Lyme borreliosis
    ticks bites
    preventive behaviours
    Opis:
    Introduction and objective. The incidence of Lyme borreliosis (LB) is increasing in many countries in Europe, including Poland and Slovakia. The aim of the study was to analyze the exposure to tick bites and undertaking LB prevention activities among students of medical fields of studies in Poland (PL) and Slovakia (SK). Materials and method. The study was conducted among 611 students from Poland (296 students) and Slovakia (315 students). The applied research tool was the questionnaire. It consisted of questions about exposure to ticks (occurrence of an episode of tick bites, bite site, methods used for tick removal) and the frequency of undertaking preventive actions (using repellents, checking the body after returning from green areas). Pearson Chi-square statistics were calculated to assess significant differences between students from the study countries PL/SK and gender in each country. Results. Among surveyed students the episode of a tick bite was reported by 352 persons (57.6%). Students from PL most frequently removed ticks with tweezers with a swift, steady movement (26.6%), while students from SK removed the tick by applying a fatty substance so that it would come off by itself (30.1%). Most of the surveyed students, being outdoors, did not apply ticks repellents (34.7%) or used them rarely (48.9%). At the same time, 49.4% of students stated that they always checked the body to search for any attached tick after returning from green areas. Conclusions. Considering the fact that the surveyed people were the students of medical fields of studies, and in the future became qualified medical personnel, the frequency of using the analyzed methods of prophylaxis of LB appears to be too small. The results obtained can help in the education of students of medical fields.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2019, 26, 2; 217-221
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Knowledge of nursing students about the transmission and prevention of infections caused by toxoplasma gondii, rubella virus, cytomegalovirus in women during pregnancy
    Wiedza studentów pielęgniarstwa w zakresie dróg transmisji i profilaktyki zakażeń toxoplasma gondii, rubella virus, cytomegalovirus u kobiet w okresie ciąży
    Autorzy:
    Eliášová, A.
    Tokarska-Rodak, M.
    Laskowski, K.
    Pawłowicz, E.
    Fiedoruk, M.
    Magurová, D.
    Mikuľáková, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/2052655.pdf
    Data publikacji:
    2017
    Wydawca:
    Akademia Bialska Nauk Stosowanych im. Jana Pawła II w Białej Podlaskiej
    Tematy:
    knowledge of nursing students
    Toxoplasma gondii
    Rubella virus
    Cytomegalovirus
    wiedza studentów pielęgniarstwa
    Opis:
    Background. The knowledge about the prevention of infections with TORCH pathogens, including Toxoplasma gondii, Rubella virus and Cytomegalovirus, combined with the proper involvement in health educator’s work may affect the creation of the correct attitudes and health promoting habits. Study objective - the evaluation of knowledge of nursing students of the State School of Higher Education in Biała Podlaska (Poland) and the University of Prešov (Slovakia) about the transmission routes and prevention of infections caused by T. gondii, Rubella virus and CMV in women during pregnancy. Material and methods. The study group included 158 nursing students from the State School of Higher Education in Biała Podlaska, and 240 students from the University of Prešov. An original questionnaire was used; it contained closed questions regarding the specific TORCH pathogens. Results. Correct answers to the question regarding the route of infection with T. gondii were provided by 43.5% of respondents from both universities; 42.5% knew the route of foetal infection with T. gondii, whereas 79.9% knew the methods to diagnose toxoplasmosis. Respondents knew consequences of infections caused by Rubella virus to the foetus (79.4%). Students of the State School of Higher Education (90.5%) and students of the University of Prešov (44.6%) were aware of the importance of rubella vaccination as a method of prevention of infection with Rubella virus. Conclusions. Nursing students are familiar with the methods used in the diagnostics of toxoplasmosis and the consequences for the foetus resulting from infections with Rubella virus. However, the awareness regarding the transmission routes of T. gondii and prevention of infections caused by Rubella virus and CMV was insufficient.
    Wprowadzenie. Wiedza w zakresie profilaktyki zakażeń patogenami grupy TORCH, w tym Toxoplasma gondii, Rubella virus, Cytomegalovirus, połączona z właściwym zaangażowaniem w pracę edukatora zdrowia może wpłynąć na kreowanie prawidłowych postaw i nawyków zdrowotnych. Cel badań – ocena wiedzy studentów kierunku pielęgniarstwo kształcących się w Państwowej Szkole Wyższej w Białej Podlaskiej (Polska) oraz Uniwersytecie Preszowskim (Słowacja) na temat dróg transmisji i profilaktyki zakażeń powodowanych przez T. gondii, Rubella virus, CMV u kobiet w okresie ciąży. Materiał imetody. Grupa badawcza obejmowała studentów pielęgniarstwa: 158 osób z PSW w Białej Podlaskiej i 240 studentów z Uniwersytetu Preszowskiego. Wykorzystano autorski kwestionariusz ankiety zawierający pytania zamknięte dotyczące wybranych patogenów grupy TORCH. Wyniki. Poprawnie na pytanie o drogi zakażenia T. gonidii odpowiedziało 43.5% badanych studentów obu uczelni, 42.5% zna drogę, na której dochodzi do zakażenia płodu T. gonidii, a79.9% zna metody diagnostyki toksoplazmozy. Ankietowani znają konsekwencje zakażeń Rubella virus dla płodu (79.4%). Znaczenie szczepienia przeciwko różyczce jako metody profilaktyki zakażeń Rubella virus świadomi są studenci z PSW (90.5%) i Uniwersytetu Preszowskiego (44.6%). Wnioski. Studenci pielęgniarstwa znają metody stosowane w diagnostyce toksoplazmozy oraz konsekwencje dla płodu wynikające z zakażenia Rubella virus, jednak świadomość dotycząca dróg transmisji T. gondii, profilaktyki zakażeń Rubella virus i CMV jest niewystarczająca.
    Źródło:
    Health Problems of Civilization; 2017, 11, 1; 40-44
    2353-6942
    2354-0265
    Pojawia się w:
    Health Problems of Civilization
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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