Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "Jaskólski, J." wg kryterium: Autor

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-14 z 14
    Tytuł:
    An analysis of the urban public transport system in Rzeszów - a study of conditions
    Autorzy:
    Mierzwa, R.
    Budzik, G.
    Jaskólski, J.
    Cygnar, M.
    Kwaśniak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/246356.pdf
    Data publikacji:
    2010
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    urban public transport
    rebuilding of road
    monorail
    crossroads
    Opis:
    The article presents an analysis of the urban transport system solutions in Rzeszów in terms of its optimization and implementation of new solutions. In the analvsis the current traffic and communication solutions were taken inio account, i.e. the network of the existing roads, road marking, traffic control and public transport traffic. In addition, the possibility of applying innovative solutions to the urban transport - ground monorail train was laken into account. The reason for the analysis is constantly increasing volume of traffic in the city, which causes the neccssity to implement new innovative solutions for transport and public transport. At present in Rzeszów the transport system is based on the bus service, most urban and suburban lines are supported bv Urban Transport Company. In addition. some suburban lines are served bv private carriers and Shuttle Service Companv, which is also transport provided by buses. Therefore, if possible, the new transport solutions should not burden the existing system of public roads and ensure smooth movement of passengers regardless of vehicle transport. All kinds of overground or underground urban railway types, including monorail train transportation, are examples of such solutions. Rzeszow City is considering the introduction of such a railway within the framework of the development of transport infrastructure. The article also presents an analysis of the possibility of building a monorail train in terms of technological, architectural and urban solutions. Described are also planned solutions of the monorail train routes from the point of view of connection of the most important areas in the city at the first stage of the investment.    
    Źródło:
    Journal of KONES; 2010, 17, 2; 315-320
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of technological process of installation turbochargers
    Autorzy:
    Cygnar, M.
    Mazurków, A.
    Jaskólski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/244108.pdf
    Data publikacji:
    2008
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    turbocharger
    installation of turbocharger's group
    turbine's rotor
    compressor's rotor
    Opis:
    The technological process of installation of turbocharger as well as detailed analysis of chosen stages of installation having fundamental influence on the correct work of the turbocharger are presented in the article. The purpose of this article is performance of whole process of installation turbocharger as well as analysis of particularly significant stages of this process. The creature of turbocharging and it is myself this of working of turbocharger is enough simple. Difficulties appear if we put to the analysis conditions work of turbocharger: high temperature offumes, variable loads, aggressive environment of combustion gases, high rotatory speeds of rotors. Some of exploitation problems are possible to the elimination on the design stage or by means of application of appropriate materials. However technological process of installation is responsible for output quality and failure-free lasting work of turbocharger. In the process of installation it can distinguish some essential stages: processing and installation of shaft with the turbine's rotor, the weighing of turbine's rotor and the compressor, the installation of rotor's group, weighing of rotor's group in the trunk, positional tests under load. High rotary speeds cause during work of rotator so that created during of installation of turbocharger inappropriate balancing can bring to important damages of turbocharger. The correct course of process of installation and the final verification on braked position allows to avoid most of breakdowns of turbocharger group as well as to ensure long term of correct exploitation.From this reason very important is detailed analysis of respective stages of installation of group.
    Źródło:
    Journal of KONES; 2008, 15, 2; 35-39
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biochemical and structural studies of plant circadian clock proteins
    Autorzy:
    Saini, R.
    Szpotkowski, K.
    Kozak, M.
    Jaskolski, M.
    Davis, S.J.
    Powiązania:
    https://bibliotekanauki.pl/articles/80840.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    circadian clock
    diurnal change
    plant circadian clock
    protein
    multiple feedback loop
    crystallization
    recombinant fusion protein
    early flowering
    small angle X-ray scattering
    protein-protein interaction
    biochemical study
    structural study
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 1
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hyp-1 protein from St John’s wort as a PR-10 protein
    Autorzy:
    Sliwiak, J.
    Dauter, Z.
    Jaskolski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/80430.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    PR-10 protein
    plant pathogenesis
    St.John's wort
    Hypericum perforatum
    hypericin
    biosynthesis
    crystal structure
    ligand binding protein
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 1
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Identification of amino acid sequences via X-ray crystallography: a mini review of case studies
    Autorzy:
    Pietrzyk, A.J.
    Bujacz, A.
    Jaskolski, M.
    Bujacz, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/80098.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    amino acid sequence
    X-ray crystallography
    cDNA sequence
    protein sequence
    protein 3D structure
    liquid chromatography
    electrospray ionization mass spectrometry
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 1
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of dopaminergic treatment on resting elbow joint angle control mechanisms in patients with Parkinson’s disease – a preliminary report
    Autorzy:
    Marusiak, J.
    Jaskólska, A.
    Budrewicz, S.
    Koszewicz, M.
    Andrzejewska, R.
    Kisiel-Sajewicz, K.
    Jaskólski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/949739.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    choroba Parkinsona
    elektromiografia
    myotonometria
    lek
    Parkinson's disease
    electromyography
    myotonometry
    motor control
    joint angle
    medication
    Opis:
    Heightened tonic stretch reflex contributes to increased muscle tone and a more-flexed resting elbow joint angle (EJA) in patients with Parkinson’s disease (PD). Dopaminergic medication restores central nervous system (CNS) functioning and decreases resting muscle electrical and mechanical activities. This study aimed to evaluate the effects of dopaminergic medication on parkinsonian rigidity, resting EJA, resting electrical activity (electromyography, EMG) and mechanical properties (myotonometry, MYO) of elbow flexor muscles and the associations of EJA with these muscles resting electrical activity and mechanical properties in PD patients. We also evaluated a relationship between dopaminergic treatment dose and these outcome measures values. Methods: Ten PD patients (age 68 ± 10.1 years; body mass 70 ± 16.8 kg; height 162 ± 6.6 cm; illness duration 9 ± 4.5 years) were tested during medication on- and off-phases. Resting EJA, myotonometric muscle stiffness (S-MYO) and root mean square electromyogram amplitude (RMS-EMG) were recorded from relaxed biceps brachii and brachioradialis muscles. Based on the above parameters, we also calculated the EJA/S-MYO ratio and EJA/RMS-EMG ratio. Parkinsonian rigidity was assessed using the motor section of the Unified Parkinson’s Disease Rating Scale. Results: EJA, EJA/S-MYO ratio, and EJA/RMS-EMG ratio were increased and S-MYO, RMS-EMG, and parkinsonian rigidity were decreased during the medication on-phase compared with the off-phase. In addition, the dopaminergic treatment dose was negatively correlated with S-MYO and RMS-EMG, and positively correlated with EJA/SMYO and EJA/RMS-EMG ratios. Conclusions: We conclude that dopaminergic medication-induced improvements in resting elbow joint angle in tested patients with PD are related to changes in their muscle electrical and mechanical properties.
    Źródło:
    Acta of Bioengineering and Biomechanics; 2018, 20, 4; 75-82
    1509-409X
    2450-6303
    Pojawia się w:
    Acta of Bioengineering and Biomechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of number of records on reliability of myotonometric measurements of muscle stiffness at rest and contraction
    Autorzy:
    Marusiak, J.
    Jarocka, E.
    Jaskólska, A.
    Jaskólski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/306266.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    sztywność mięśni
    miotonometria
    pomiary niezawodności
    muscle stiffness
    myotonometry
    measurements reliability
    Opis:
    The aim of this study was to determine an effect of myotonometric records’ number on stiffness measurements’ reliability in muscles at rest and contraction. Methods: Muscle stiffness was measured using Myoton-3 device. Twenty records were taken for: (i) biceps (BB) and triceps brachii (TB) at rest and for BB at 10% of maximal voluntary contraction (MVC) in healthy elderlies (HE) and in Parkinson’s disease patients (PD); and (ii) brachioradialis (BR) at rest and at 25, 50 and 80% MVC in healthy young (HY) subjects. Also, in HY group, the 3-records mode was used for BR’s measurements at maximal contraction. Each measurement taken with 20-records was classed into five records groups: the whole 20- and the first 15-, 10-, 5- and 3-records. Test-retest reliability for these records groups was analyzed. Results: In HE and PD group measurements’ reliability was excellent for all groups of records (20–3 records). In HY group, for the five groups of records taken at rest and submaximal levels of contraction (25, 50 and 80% MVC) the measurements reliability: (i) was mostly excellent or rarely average; and (ii) only in one per three 50% MVC conditions was unacceptable, i.e., for the 3-records group. The reliability of 3-records mode measurements at maximal contraction were unacceptable. Conclusions: Reliable myotonometric stiffness measurements in muscles at rest and during submaximal contractions can be achieved with less than 20 records (15, 10, 5 records) and even for the most of measurements with 3 records in HY and HE as well as in the PD patients. Myotonometric stiffness measurements with 3-records mode during maximal contraction were not reliable.
    Źródło:
    Acta of Bioengineering and Biomechanics; 2018, 20, 3; 123-131
    1509-409X
    2450-6303
    Pojawia się w:
    Acta of Bioengineering and Biomechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Predictors of recanalization after endovascular treatment of posterior circulation aneurysms
    Autorzy:
    Wiśniewski, Karol
    Tomasik, Bartłomiej
    Bobeff, Ernest J
    Stefańczyk, Ludomir
    Jaskólski, Dariusz J
    Powiązania:
    https://bibliotekanauki.pl/articles/1393121.pdf
    Data publikacji:
    2017
    Wydawca:
    Index Copernicus International
    Tematy:
    embolization
    posterior circulation aneurysms
    subarachnoid hemorrhage
    predictors
    Opis:
    Introduction. Posterior circulation aneurysms account for approximately 30% of all intracranial aneurysms, and their rupture often causes aneurysmal subarachnoid hemorrhage (aSAH). Because surgical treatment of posterior circulation aneurysms is difficult, endovascular treatment is commonly indicated. However, simple coil embolization is associated with a high rate of recanalization. Our goal was to investigate morphometric aneurysmal features assessed on pre-embolization computed tomography angiography (CTA) as predictors of recanalization in patients with posterior circulation aneurysms. Material and Methods. We retrospectively analyzed data of 24 patients who underwent coil embolization due to rupture of saccular posterior circulation aneurysms. The morphometric features of aneurysms were measured based on pre-embolization 3D-CTA-aneurysm models, and aneurysmal size and volume were measured on digital subtraction angiography (DSA) images. The effectiveness of initial endovascular treatment was determined visually with the modified Raymond Roy classification directly after embolization and on follow-up DSAs. Recanalization was diagnosed when, compared to the primary embolization aneurysm appearance, compaction and filling of the aneurysm occurred. Statistical analysis was performed with Statistica 13.1 software. Results. Higher maximal aneurysm height perpendicular to the aneurysmal neck was associated with a greater aneurysm recanalization risk (12.12±5.13mm vs. 7.41±3.97mm, p=0.039), and this relationship remained significant after adjustment for patient’s age, sex and aneurysm localization (OR=1.26, 95%CI: 1.01-1.60, p=0.047). Maximal aneurysm height perpendicular to the aneurysmal neck distinguished well between recanalized and non-recanalized aneurysms (AUC=0.755, 95%CI: 0.521- 0.989, p=0.033). Conclusions. Predictors of aneurysm recanalization can help choose best endovascular treatment strategies, which could reduce complication rates.
    Źródło:
    Polish Journal of Surgery; 2017, 89, 6; 7-11
    0032-373X
    2299-2847
    Pojawia się w:
    Polish Journal of Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Safety increase on crossroads in Rzeszów by installation of light signaling with automatic roads traffic measurements
    Autorzy:
    Budzik, G.
    Jaskólski, J.
    Mierzwa, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/242446.pdf
    Data publikacji:
    2009
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    transport
    road rebuilding
    safety increase
    crossroads
    Opis:
    The article presents solutions of crossroads which make it possible to eradicate dangerous places at selected crossroads in Rzeszów. The solution consists in redeveloping traffic lights signalizations and installations of self-exited system with automatic traffic measurements. The idea of safety increase comes down to the implementation of accommodated traffic lights for all road traffic users. This installation is adapted to the road traffic changes by altering the time of green signals for vehicular traffic and omitting the green lights for pedestrians if not necessary. The traffic control is realized on the basis of current registration of traffic intensity with a video detecting system (for vehicular traffic) and push-button (for pedestrian traffic). At the crossroads there are separate roadways to turn left. The traffic control system is divided into four elementary traffic phases, the sequence of which is dependent on the analyzed traffic situation. The safety increase was also accomplished by improvements of friction grip. It was a result of a special layer of SMA asphalt (4 centimeter thickness) application. Additionally, there were safety barriers built, which preclude car parking in the neighborhood of crossroads. These solutions increased visibility at crossroads. The goal of the rebuilding was to decrease the number of road accidents in vehicular and pedestrian traffic. The bettering of the traffic flow and the improvement of safety at Rzeszów crossroads were achieved by the crossroads rebuilding and traffic control system application at the following crossroads: Lubelska - Mączka - Wyzwolenia streets and Targowa -Pilsudskiego - Głowackiego Streets. The investment project assumed over 50% decrease of the quantity of road accidents.
    Źródło:
    Journal of KONES; 2009, 16, 2; 49-53
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Simplified Distribution Grid Modelling for Connection Analyses
    Uproszczone modelowanie sieci dystrybucyjnej na potrzeby analiz przyłączeniowych
    Autorzy:
    Bućko, P.
    Buriak, J.
    Dobrzyński, K.
    Jaskólski, M.
    Skoczko, P.
    Zieliński, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/952866.pdf
    Data publikacji:
    2016
    Wydawca:
    ENERGA
    Tematy:
    connection analysis
    distribution grid
    prosumer source
    analiza przyłączeniowa
    sieć dystrybucyjna
    źródło prosumenckie
    Opis:
    This paper considers the modelling of medium and low voltage grids for the purpose of connection studies by distribution grid operators. Possible simplifications in grid modelling are discussed, which are acceptable from the viewpoint of the final result. The main driver of the modelling simplification is the MS Excel environment used as the computation platform, and the limitation of time for grid modelling.
    W artykule przedstawiono rozważania na temat sposobu modelowania sieci średniego (SN) i niskiego (nn) napięcia na potrzeby wykonywania analiz przyłączeniowych przez Operatora Systemu Dystrybucyjnego (OSD). Zaproponowano możliwe do wykonania uproszczenia w modelowaniu sieci, które są do zaakceptowania z punktu widzenia uzyskiwanego wyniku końcowego. Głównym elementem wymuszającym uproszenia w modelowaniu jest środowisko MS Excel, które wykorzystano jako platformę obliczeniową, oraz czas, jaki należy poświęcić na zamodelowanie sieci.
    Źródło:
    Acta Energetica; 2016, 3; 33-39
    2300-3022
    Pojawia się w:
    Acta Energetica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Strain and Spin-Orbit Effects in Self-Assembled Quantum Dots
    Autorzy:
    Zieliński, M.
    Jaskólski, W.
    Aizpurua, J.
    Bryant, G. W.
    Powiązania:
    https://bibliotekanauki.pl/articles/2044558.pdf
    Data publikacji:
    2005-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    71.35.Cc
    Opis:
    The effects of strain and spin-orbit interaction in self-assembled lens-shaped InAs/GaAs quantum dots are investigated. Calculations are performed with empirical tight-binding theory supplemented by the valence force field method to account for effects of strain caused by lattice mismatch at the InAs-GaAs interface. It is shown that both effects influence strongly the electron and hole energy structure: splitting of the energy levels, the number of bound states, density distributions, and transition rates. We show that piezoelectric effects are almost negligible in quantum dots of the size investigated.
    Źródło:
    Acta Physica Polonica A; 2005, 108, 5; 929-940
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Method of Multi-criteria Analysis to Support the Decision on Load or Micro-generation Connection to a Low- or Medium-voltage Power Grid
    Metoda analizy wielokryterialnej wyboru wariantu przyłączenia do sieci elektroenergetycznej dystrybucyjnej niskiego i średniego napięcia
    Autorzy:
    Bućko, P.
    Buriak, J.
    Dobrzyński, K.
    Jaskólski, M.
    Skoczko, P.
    Zieliński, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/397230.pdf
    Data publikacji:
    2016
    Wydawca:
    ENERGA
    Tematy:
    development planning
    power system
    distribution system operator
    load connection
    microgeneration source connection
    planowanie rozwoju
    system elektroenergetyczny
    operator systemu dystrybucyjnego
    przyłączanie odbiorcy
    przyłączanie źródła mikrogeneracji
    Opis:
    This paper presents a method that supports the decision in terms on selecting the best option of a load connection to a low- or medium-voltage power distribution grid, and of a micro-generation source connection to a low-voltage grid. The method is based on the search for the option with the lowest aggregate assessment measure, which is the weighted average of partial assessment measures determined for each of eight considered criteria. For each of the first three, economic criteria, partial assessment measure was calculated using the normalisation method. For each of the other five, technical criteria, we  developed a relative measure of the distance of the indicator from the threshold (e.g. the ratio of voltage drop in power supply line nodes in relation to its permissible value). This algorithm rejects variants whereby the thresholds set for partial criteria were exceeded in the time period of load/micro-generation source connection. The method was implemented in an MS Excel workbook and used to analyse complex problems of load or microgeneration source connections.
    W artykule przedstawiono metodę wspomagającą decyzje w zakresie wyboru najlepszego wariantu przyłączenia odbioru do sieci elektroenergetycznej dystrybucyjnej niskiego napięcia lub średniego napięcia oraz mikrogeneracji do sieci niskiego napięcia. Metoda bazuje na poszukiwaniu wariantu o najniższej wartości miernika oceny syntetycznej, który jest średnią ważoną mier- ników ocen cząstkowych, wyznaczanych z zastosowaniem ośmiu przyjętych kryteriów. Dla każdego z pierwszych trzech kryteriów o charakterze ekonomicznym obliczono miernik oceny cząstkowej z zastosowaniem metody normalizacji. Dla każdego z kolejnych pięciu kryteriów (technicznych) opracowano względną miarę odległości wskaźnika (np. maksymalny spadek napięcia w węzłach ciągu zasilającego) od jego wartości dopuszczalnej. Opracowany algorytm odrzuca warianty, w których w okresie czasowym przy- łączenia rozpatrywanego odbioru/mikrogeneracji zostały przekroczone wartości dopuszczalne wskaźników dla poszczególnych kryteriów cząstkowych. Metodę zaimplementowano w skoroszycie kalkulacyjnym Microsoft Excel i zastosowano do analizy złożo- nych problemów przyłączenia odbioru lub mikrogeneracji.
    Źródło:
    Acta Energetica; 2016, 1; 4-9
    2300-3022
    Pojawia się w:
    Acta Energetica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The temperature - and stress fields of valves of IC engine
    Autorzy:
    Jaskólski, J.
    Krzyżak, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/243403.pdf
    Data publikacji:
    2007
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    intake valve
    output valve
    YSZ
    ferberite
    scheelite
    silicides
    pyroxene
    composite
    joining of materials
    thermal conductivity
    radiative transfer
    thermal expansion
    Opis:
    The paper concerns building up one exhaust valve of composite-steel and two intake ceramics-steel valves of a hypothetical adiabatic engine. The input temperatures were computed using three diverse FORTRAN95 programs, solving a shortened optical integral equation with radiative transfer, transient differential equation while starting and switching off the engine and a rod like diff. Equation with 'progonka' (Thomas) solution. The ANSYS11 programme was fed up with the output of the programs. It turns out that, generally, a mineralogical, crystal-chemical approach to the joining of materials results in stresses known from the common metal engines. Such problems as CTE enhancing (partly hypothetical) by means of doping the anionic compounds by cationic ones, swelling of structures, compressibility versus coefficient of thermal expansion (CTE) , compatibility of crystal motifs while joining, thermal shock resistance, switching the bonds, mechanical longevity, radiation protection etc were addressed. It turns out that true nature of the temperature and stress field, especially of the exhaust valve is closer to the FORTRAN temperature computation than, e.g. From the heat film coefficients (ANSYS11).
    Źródło:
    Journal of KONES; 2007, 14, 3; 245-252
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The temperature and stress field of the ceramic-capped cylinder head of the hypothetical adiabatic diesel engine
    Autorzy:
    Jaskólski, J.
    Krzyżak, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/241933.pdf
    Data publikacji:
    2008
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    cylinder head
    PtAu alloy
    thermal conductivity
    thermal stress
    Opis:
    Four of five models of the ceramic-slab-capped cast-iron cylinder head for a prospective adiabatic engine were numerically investigated. The models were designed using several crystallochemical-mineralogical considerations. The outcome of some short radiation and convection Fortran95 programmes became the input data for the FEM programme of temperatures and stresses. It turns out, that in general the material that cannot withstand will hardly be ceramics, but the cast iron. Thence, the latter should be replaced, plated or the ceramics should cover it at the injection jet. The temperatures and stresses were analysed with and without an interlayer. Two models, with feldspars and Ti6Al4V or Pt30Au70, were quite promising, the first one being surely at once applicable even without interlayer i.e. according to FEM. The stresses in the models with YSZ, cerium disilicide and/or pyroxene, in spite of the crystallochemical hattrics deemed successful, betoken spallation of the YSZ. The problems of emissivity were addressed as well. There exists a blank range of temperature where neither radiation-related algorithm nor the common conductivity one can perform well. The surface of the head under hood appears 'quite cold', except the exhaust pipe, the TBC solution of which is left in abeyance in this paper. Adiabatic engines using ceramic as the material for the combustion camber walls were developed for the reduction of cooling loss and the in crease of exhaust energies.
    Źródło:
    Journal of KONES; 2008, 15, 4; 635-640
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-14 z 14

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies