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Wyszukujesz frazę "Mazurkiewicz, P.J." wg kryterium: Autor


Tytuł:
Wykorzystanie białek serwatkowych do otrzymywania polew do lodów
Utilization of whey protein in the production of ice-cream toppings
Autorzy:
Mleko, S.
Gustaw, W.
Glibowski, P.
Mazurkiewicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/11000225.pdf
Data publikacji:
2004
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
bialka serwatkowe
lody
polewy do lodow
sacharoza spozywcza
produkcja
skrobia
Źródło:
Annales Universitatis Mariae Curie-Skłodowska. Sectio E. Agricultura; 2004, 59, 1; 37-45
0365-1118
Pojawia się w:
Annales Universitatis Mariae Curie-Skłodowska. Sectio E. Agricultura
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermovision in the validation process of numerical simulation of braking
Autorzy:
Baranowski, P.
Damaziak, K.
Malachowski, J.
Mazurkiewicz, L.
Polakowski, H.
Piatkowski, T.
Kastek, M.
Powiązania:
https://bibliotekanauki.pl/articles/220945.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
thermovision
numerical models validation
temperature measurement
Opis:
This article presents the validation process of a brake FE model by means of temperature measured on a special stand using infrared technology. Unlike many other publications, the authors try to show the interaction between measurement technology and numerical modeling rather than only nice, perfectly correlated graphs. Some difficulties in choosing and using validation parameters are also pointed out and discussed. Finally, results of FE analyses are compared with measured data, followed by explanation of applied numerical technology and estimation of validation process effectiveness.
Źródło:
Metrology and Measurement Systems; 2014, 21, 2; 329-340
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of density on the breeding optimization of the tropical house cricket Gryllodes sigillatus (Walker) (Orthoptera: Gryllidae)
Wpływ zagęszczenia na optymalizację hodowli świerszcza bananowego Gryllodes sigillatus (Walker) (Orthoptera: Gryllidae)
Autorzy:
Mazurkiewicz, A.
Tumialis, D.
Pezowicz, E.
Urbanski, J.
Galewski, P.
Goral, K.
Powiązania:
https://bibliotekanauki.pl/articles/2692.pdf
Data publikacji:
2013
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
population density
breeding optimization
survival
growth rate
tropical house cricket
Gryllodes sigillatus
Orthoptera
Gryllidae
Opis:
The study was aimed at testing the density effect in the tropical house cricket breeding on its survival and growth rate when fed ad libitum. The tropical house crickets were kept in nine containers of a volume of 81 litres each. Three experimental variants were used: 7.5 ml of crickets were placed in the first container, 15 ml in the second and 30 ml in the third. Temperature in containers was 29°C, the experiment lasted 25 days. Obtained results showed that survival did not depend on the initial density in culture containers while crickets kept at a high density had smaller body length. The results may affect the optimization of house cricket breeding.
Wpływ zagęszczenia na optymalizacją hodowli świerszcza bananowego Gryllodes sigillatus (Walker) (Orthoptera: Gryllidae). Praca miała na celu zbadanie wpływu zagęszczenia początkowego w hodowli świerszczy bananowych na ich przeżywalność oraz szybkość wzrostu przy dostępie do pokarmu ad libitum. Świerszcze bananowe w czasie eksperymentu były hodowane łącznie w dziewięciu pojemnikach o pojemności 81 l każdy. Zastosowano trzy warianty doświadczeń: w pierwszym pojemniku umieszczono 7,5 ml świeżo wylęgłych świerszczy, w drugim 15 ml, a w trzecim 30 ml. Każdy wariant doświadczenia powtórzono trzykrotnie. Temperatura w pomieszczeniu wynosiła 29°C. Eksperyment trwał 25 dni. W wyniku przeprowadzonych badań stwierdzono, że objętość początkowa świerszczy użytych w każdym wariancie doświadczenia nie wpływa na przeżywalność owadów, jednak świerszcze hodowane w większym zagęszczeniu miały mniejszą długość ciała. Uzyskane wyniki mogą przyczynić się do zoptymalizowania hodowli tego gatunku świerszcza.
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Animal Science; 2013, 52
1898-8830
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Animal Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Poznań Air Pollution Analysis for 2015–2017
Autorzy:
Smurzyńska, A.
Czekała, W.
Hektus, P.
Marks, S.
Mazurkiewicz, J.
Brzoski, M.
Chełkowski, D.
Kozłowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/125027.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
Poznań
air pollution
PM10
PM2.5
Opis:
Air pollution is the result of natural processes and intense urban development. The undesired emission of volatile substances causes environmental threats such as acid rains, aggravated greenhouse effect or the ozone depletion. Moreover, the pollution released into the air is harmful to the human respiratory system, eyes and skin. This paper presents the body of analyses conducted in Poznań between 2015–2017 on the changes in the local emission concentration of PM10 and PM2.5. The data concerning the emission of suspended particulates were provided by the meteorological station on Polanka St. in Poznań. The research included a correlation analysis. The results point to a steady decrease in the amount of produced particulates. It was also noted that the emissions of PM10 and PM2.5 change seasonally, with the highest levels in the autumn and winter. Furthermore, the amount of emitted suspended particulates is correlated with the temperature; hence, it is supposed that the main source of air pollution in Poznań involves low-efficiency heaters and boilers.
Źródło:
Journal of Ecological Engineering; 2018, 19, 6; 162-169
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical study for determination of pulse shaping design variables in SHPB apparatus
Autorzy:
Baranowski, P.
Malachowski, J.
Gieleta, R.
Damaziak, K.
Mazurkiewicz, L.
Kolodziejczyk, D.
Powiązania:
https://bibliotekanauki.pl/articles/200666.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Split-Hopkinson Pressure Bar
pulse shape
numerical studies
parametrical study
Opis:
High strain rate experimental tests are essential in a development process of materials under strongly dynamic conditions. For such a dynamic loading the Split Hopkinson Pressure Bar (SHPB) has been widely used to investigate dynamic behaviour of various materials. It was found that for different materials various shapes of a generated wave are desired. This paper presents a parametric study of Split Hopkinson Pressure Bar in order to find striker’s design variables, which influence the pulse peak shape in the incident bar. With experimental data given it was possible to verify the developed numerical model, which was used for presented investigations. Dynamic numerical simulations were performed using explicit LS-Dyna code with a quasi-optimization process carried out using LS-Opt software in order to find striker’s design variables, which influence the pulse peak shape.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2013, 61, 2; 459-466
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical analysis of I-beam supporting structure with multimaterial protective panel - parametric study
Autorzy:
Damaziak, K.
Mazurkiewicz, Ł.
Małachowski, J.
Klasztorny, M.
Baranowski, P.
Powiązania:
https://bibliotekanauki.pl/articles/246508.pdf
Data publikacji:
2012
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
ALE formulation
blast wave
dynamic response
protective panel
Opis:
Dynamic response of an I-beam supporting structure subjected to shock wave produced by the detonation of high explosive materials is presented in this paper. Dynamic response of structural components in different load cases-with multimaterial panel protection and without protection, subjected to blast wave from various charge weight and various distance stand-off was determined. LS-DYNA, a 3-D explicit, finite element computer code with Lagrangian-Eulerian coupling was used to study this behaviour. Also initial static load was taken into account as pre-stress field present in the column obtained using dynamic relaxation procedure. The protective panel is composed of fibreglass composite and aluminium foam. The composite orthotropic properties and the failure criteria for fibre and matrix damage as well as the stress-volumetric strain curve for metallic foam were taken into account. The previous study shows that critical to the structure durability are the plastic strains and the structure failure caused by high deformation. Results of the analyses indicate that application of the blast panel around the supporting structure increase the resistance and significantly reduce the plastic deformation of the structure. The pillar without protection can be destroyed by 2 kg TNT placed close to the structure. Analysed beam covered by the blast panel can resist over three times bigger charge without significant deformation of the structure.
Źródło:
Journal of KONES; 2012, 19, 3; 93-102
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
No effect of agmatine on the protective activity of clobazam and pregabalin against maximal electroshock-induced seizures in mice
Autorzy:
Luszczki, J.J.
Jaskolska, A.
Dworzanski, W.
Kominek, M.
Mazurkiewicz, L.P.
Ossowska, G.
Powiązania:
https://bibliotekanauki.pl/articles/3584.pdf
Data publikacji:
2010
Wydawca:
Instytut Medycyny Wsi
Tematy:
agmatine
protective activity
clobazam
pregabalin
maximal electroshock-induced seizure
mice
mouse
Źródło:
Journal of Pre-Clinical and Clinical Research; 2010, 04, 1
1898-2395
Pojawia się w:
Journal of Pre-Clinical and Clinical Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multi - body simulations of railway wagon dynamics
Autorzy:
Wójcik, K.
Małachowski, J.
Baranowski, P.
Mazurkiewicz, Ł.
Damaziak, K.
Krasoń, W.
Powiązania:
https://bibliotekanauki.pl/articles/246886.pdf
Data publikacji:
2012
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
multi-body
MSC ADAMS
railway wagon
dynamics
Opis:
The main aim of the presented paper is to verify the dynamics of chosen railway wagon using multi-body methods. Thus, in tests a wagon prototype with rotational rail-car body was simulated, which is going to be used for TIR vehicles trailer bodies transporting. Implemented prototype is authored by the team from Department of Applied Mechanics and Computer Science from Faculty of Mechanical Engineering in Military University of Technology. For this purpose CAD model, and subsequently numerical model, of mentioned wagon was developed. Using MSC Adams software initial boundary conditions, material parameters and contact characteristics were defined. In the previous authors' paper [1], preliminary analyses of the loads acting on the railway platform were carried out, which verified chosen parameters and coefficients. The main aim of presently proposed 3D multi-body simulations of railway wagon is to investigate its motion with full load and to determine the operation limit safety. Thus, in the performed analyses the railway wagon was accelerated to the desired velocity and drove through the curved tracks with four different velocities. From the carried out simulations the wagon dynamic behaviour was investigated and obtained results including contact forces characteristics were compared from all analyses cases. Moreover, performed study shows that the MSC. Adams software is capable for analysing and simultaneously validating various complex engineering problems, such as the one investigated by the authors.
Źródło:
Journal of KONES; 2012, 19, 3; 499-506
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelowanie maszyny SRM jako układu o zmiennych indukcyjnościach przy użyciu programu PSpice
Modeling of Switched Reluctance Motor with PSpice programme
Autorzy:
Bogusz, P.
Korkosz, M.
Mazurkiewicz, A.
Prokop, J.
Powiązania:
https://bibliotekanauki.pl/articles/1812266.pdf
Data publikacji:
2012
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
zmienna indukcyjność
PSpice
modelowanie
SRM
Opis:
PSpice program is able to analyze chosen operations of electronic circuits. However the inductance available in the program's library has constant value. This fact makes it impossible to model the circuits which include inductances dependent on other physical quantities for example reluctance motors. The paper shows how with the help of PSpice program to test systems with variable inductances. The proposed method has been used for simulation SRM drive (switched reluctance motor and electronic commutator). The basic research results have been included in the paper.
Źródło:
Prace Naukowe Instytutu Maszyn, Napędów i Pomiarów Elektrycznych Politechniki Wrocławskiej. Studia i Materiały; 2012, 66, 32; 196-202
1733-0718
Pojawia się w:
Prace Naukowe Instytutu Maszyn, Napędów i Pomiarów Elektrycznych Politechniki Wrocławskiej. Studia i Materiały
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Minimalizacja momentu zaczpowego silnika bldc przeznaczonego do napędu bezzałogowego aparatu latającego
Cogging torque reduction of BLDC motor for drive of an unmanned aerial vehicle
Autorzy:
Bogusz, P.
Korkosz, M.
Mazurkiewicz, A.
Prokop, J.
Powiązania:
https://bibliotekanauki.pl/articles/1372593.pdf
Data publikacji:
2011
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
moment zaczepowy
silnik elektryczny
silnik BLDC
magnes trwały
napęd hybrydowy
bezzałogowy aparat latający
Opis:
The paper presents the analysis of a possibility of cogging torque reduction for BLDC motor assigned for drive of an unmanned aerial vehicle (UAV). For UAV drive the smallest value of cogging torque and simultaneously the biggest value of electromagnetic torque are required. The influence of different forms of permanent magnets and manners of polarization on received maximum value of cogging torque and on average value of electromagnetic torque has been analyzed. This analysis was based on a FEM simulation model of the projected BLDC motor. On the basis of the calculated results some conclusions concerning the choice of form and magnetize manner of permanent magnets have been included. Taking simulation results into consideration and using CAD program the complete 3D model of the designed BLDC motor has been made.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2011, 3, 91; 27-32
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Load carrying capacity numerical study of I-beam pillar structure with blast protective panel
Autorzy:
Mazurkiewicz, L.
Kolodziejczyk, D.
Damaziak, K.
Malachowski, J.
Klasztorny, M.
Baranowski, P.
Powiązania:
https://bibliotekanauki.pl/articles/202056.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
FE analysis
blast protection
stability study
Opis:
The paper presents numerical analyses aimed at preliminary assessment of the protective panel effectiveness, which task is to protect the elements of building structures against explosion. For the criterion of assessing the effectiveness of the panel the load capacity of the column made of steel I-beam was chosen. Ultimate force was determined by using advanced computational procedure, which consisted of four stages: preload, blast simulation, dynamic response and static analysis of deformed structure. Blast load was simulated using Lagrangian- Eulerian domain coupling. Results indicated that the application of the protective panel significantly reduces the plastic deformation of the structure.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2013, 61, 2; 451-457
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identification of layers distribution in the composite coupon using finite element method and three point bending test
Autorzy:
Mazurkiewicz, Ł.
Małachowski, J.
Damaziak, K.
Baranowski, P.
Gotowicki, P.
Powiązania:
https://bibliotekanauki.pl/articles/387164.pdf
Data publikacji:
2013
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
fibre reinforced composite
FE analysis
hand lay-up technique
experimental validation
kompozyt włóknisty
analiza elementów skończonych
weryfikacja doświadczalna
Opis:
The main objective of the study is to develop experimentally validated FE model and perform numerical analysis of layered composites made by hand lay-up techniques during tension and bending test. The research object is glass - polyester laminate made of four unidirectional layers. In order to validate the numerical models experimental test were performed. Due to the very different stiffness modulus in tension and bending loading the material properties obtained from standard test are not suitable to apply in numerical model. Significantly different behaviour compared to experimental test was obtained for tree point bending where the numerical model becomes too stiff. Simple coupons, relatively easy to manufacture presented in the paper have very low quality. The differences in actual and theoretical bending stiffness (obtained from tension stiffness) exceed 70%. In order to represent the actual structure the layers of the composite were divided by resin layers and also additional resin layer at the top and bottom of the model were defined. Single stage optimization process was used to adjust the material layout. After layer set-up modification very significant improvement can be seen for flexural behaviour.
Źródło:
Acta Mechanica et Automatica; 2013, 7, 3; 160-165
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fish pond sediment from aquaculture production - current practices and the potential for nutrient recovery: a Review
Autorzy:
Dróżdż, D.
Malińska, K.
Mazurkiewicz, J.
Kacprzak, M.
Mrowiec, M.
Szczypior, A.
Postawa, P.
Stachowiak, T.
Powiązania:
https://bibliotekanauki.pl/articles/2082652.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
fish pond sediment
intensive aquaculture
nutrient
recovery
agriculture
Opis:
The recent increase in fish production has resulted in the accumulation of fish pond sediment. This sediment accumulates over time and can lead to a reduction in the depth of ponds and in the living space available for fish, it may also lead to a depletion in dissolved oxygen. Therefore, the removal of sediment from fresh water ponds is crucial for pond maintenance, and thus economical fish production. Fish pond sediment is rich in nutrients and organic matter, and therefore it may have potential as a fertilizer in crop production, nursery pot culture, etc. However, it contains compounds that undergo rapid degradation producing unpleasant odours and posing a threat to the environment, therefore it needs to be managed and handled efficiently in an environmentally sound and sustainable manner. The overall goal of this study was to analyse the current state and management practices of fish pond sediment generated in the existing aquaculture systems, with special reference to organic aquaculture, and the potential for the recovery of nutrients through bioconversion processes to organic fertilizers.
Źródło:
International Agrophysics; 2020, 34, 1; 33-41
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Filtr tętnień prądu dla bezczujnikowego sterowania silnika reluktancyjnego przełączalnego
Curent ripple filter for sensorless SRM commutator
Autorzy:
Bogusz, P.
Mazurkiewicz, A.
Korkosz, M.
Prokop, J.
Powiązania:
https://bibliotekanauki.pl/articles/1372591.pdf
Data publikacji:
2011
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
tętnienie prądu
filtr
sterowanie bezczujnikowe
silnik reluktancyjny przełączalny
maszyna reluktancyjna
Opis:
The concept of a low pass filter for dumping current ripple has been presented in the paper. The current ripple is the effect of pulse width modulation voltage control. The filter is assigned for sensorless SRM control which take advantage of the current derivation method. Both the basic features of low pass filter and comparative research results concerning the solution described in literature have been presented in the paper.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2011, 3, 91; 33-36
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł

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