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Wyszukujesz frazę "Madej, J.P." wg kryterium: Wszystkie pola

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Wyświetlanie 1-10 z 15
Tytuł:
Morphology of immune organs after very virulent plus strain of Marek’s disease virus infection in vaccinated hens
Autorzy:
Madej, J.P.
Wozniakowski, G.
Gawel, A.
Powiązania:
https://bibliotekanauki.pl/articles/31459.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
Marek’s disease (MD) outbreaks in poultry flocks may be associated with overriding of vaccine immune protection by very virulent (vvMDV) or very virulent plus (vv+MDV) strains. This paper presents the study on lymphoid organ morphology in the latent phase of MD caused by vv+MDV which break post-vaccinal protection in hens. We also immunohistochemically examined B and T populations as well as B/T and CD4+/CD8+ ratio of lymphocytes in lymphatic organs and, as a background, in MD lymphomas from non-lymphatic organs. The number of antigen expressed cells was evaluated as a percentage of positive cells in the one power field. Organ samples were collected from 24 dead reproductive hens (Ross 308 line) in age between 35-56 weeks, infected with vv+MDV. The hens originated from farms with MD outbreaks, despite earlier routine vaccination with CVI988/Rispens + HVT. The control organ samples originated from 15 clinically healthy hens at the same age and line, subjected to the same vaccination schedule. The number of CD3+, CD8+ and TCRγδ+ cells was significantly lower in MDV infected thymus, spleen and cecal tonsils in comparison to that found in the control organs. The proportion of CD4+ was also distinctly reduced in the thymus and limited in the spleen of MDV infected hens. This study revealed that infection with field vv+MDV isolates might break post-vaccinal protection and influence the central and peripheral immune system. The decrease in CD8+ and TCRγδ+ cell number in the thymus, spleen and cecal tonsils suggests that primarily these cells are involved in cell-mediated cytotoxicity against MDV transformed cells during latency.
Źródło:
Polish Journal of Veterinary Sciences; 2016, 19, 2
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An immunohistochemical analysis of lymphocytic infiltrations in canine skin cancers
Autorzy:
Madej, J.A.
Madej, J.P.
Dzimira, S.
Nowak, M.
Powiązania:
https://bibliotekanauki.pl/articles/31669.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
Lymphocytic infiltrations located in the extracellular matrix often accompany canine skin cancer. They can be characterised as an inflammatory infiltration and/or a second tumour – lymphoma. The aim of this study was an immunohistochemical analysis of a lymphocytic infiltration which accompanies spontaneous skin cancer. Twenty basal cell carcinoma, 20 non-keratinizing squamous cell carcinoma, 20 keratinizing squamous cell carcinoma and 8 sebaceous gland carcinoma samples which were accompanied by a lymphocytic infiltration and/or secondary lymphatic follicles were verified histopathologically. The expression of bcl-2, CD3, CD79α, Ki-67, MCM-3 and MCM-7 in the lymphocytic infiltration was evaluated. Four types of lymphocytic infiltrations were found: I – diffuse bcl-2⁺, II – diffuse bcl-2⁻, III – follicular bcl-2⁺/⁻ where the centre was bcl-2⁻, and the marginal zone of the follicles and the extrafollicular area were bcl-2⁺ and IV – aggregated bcl-2⁺, where the centre and periphery were bcl-2⁺. The I and IV type corresponds to lymphoma, II type is non-neoplastic immune response and III type suggest reactive follicular hyperplasia. The proliferation of lymphocytes which demonstrated the expression of neoplastic markers (I and IV), suggests preneoplastic phase (pseudolymphoma) or lymphoma – the second independent tumour. A high proliferative index of the follicular blc-2⁺/⁻ follicular infiltration indicates an increased immunological response of the host against skin cancer.
Źródło:
Polish Journal of Veterinary Sciences; 2017, 20, 1
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical analysis of deformation and flow in the proximal area of the urethra
Autorzy:
Rudyk, R.
Malinowski, M.
Mackiewicz, A.
Bedzinski, R.
Noszczyk-Nowak, A.
Skonieczna, J.
Madej, J. P.
Powiązania:
https://bibliotekanauki.pl/articles/264538.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
cewka moczowa
przepływ moczu
odkształcenie
urethra
stress-strain characteristic
FEM
CFD
urinary flow
Opis:
Pathological conditions of a male urethra, including fibrosis, have a mechanical background along the entire length of the urethra. They may be caused by excessive deformation of the urethra locally or globally. The condition of prolonged overload causes abnormal tissue remodelling and, consequently, the formation of a thick layer of scar tissue differentiated from the connective tissue of the urethra. This tissue, which has higher mechanical properties, is not highly deformable and therefore, causes a decrease in the diameter of the urethra, which results in conditions that disturb the natural flow of urine. In this paper, it was decided to determine the deformation conditions in the proximal part of the urethra. The study was conducted in three main stages. Transverse sections of the animal urethral tissues were prepared in order to examine mechanical properties and perform histological examinations. On the basis of these examinations, material models which fitted best for the experimental results were sought. Material constants of the Mooney-Rivlin material model with the best fit ratio were determined for further research. On the basis of histological photographs, a geometrical and numerical model of the urethra was developed. The urethra was tested in a flat state of deformation. The strain and stress fields of the Caucha tensor were examined. The methodology of testing the dynamics of the urine flow in the highly deformable urethra was proposed. This is important for the analysis of the influence of at excessive pressure on pathological tissue remodelling leading to fibrosis.
Źródło:
International Journal of Applied Mechanics and Engineering; 2020, 25, 2; 130-141
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Podocyturia jako nowy marker w diagnostyce uszkodzeń ciałek nerkowych w medycynie weterynaryjnej
Podocyturia as a new marker in renal corpuscles damage diagnostic tests in veterinary medicine
Autorzy:
Szczepankiewicz, B.
Paslawska, U.
Slawuta, P.
Madej, J.P.
Nowak, M.
Bachor, R.
Marycz, K.
Gebarowski, T.
Czyzewska-Buczynska, A.
Szewczuk, Z.
Powiązania:
https://bibliotekanauki.pl/articles/860245.pdf
Data publikacji:
2019
Wydawca:
Krajowa Izba Lekarsko-Weterynaryjna
Źródło:
Życie Weterynaryjne; 2019, 94, 10
0137-6810
Pojawia się w:
Życie Weterynaryjne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thrombolysis by thienopyridines and their congeners
Autorzy:
Gryglewski, R.J.
Dupin, J.P.
Uracz, W.
Swies, J.
Madej, J.
Hou, G.
Gravier, D.
Casadebaig, F.
Powiązania:
https://bibliotekanauki.pl/articles/69959.pdf
Data publikacji:
2000
Wydawca:
Polskie Towarzystwo Fizjologiczne
Tematy:
thienopyridine
prostacyclin
ticlopidine
clopidogrel
collagen
pyridopyrimidine
arterial blood
thrombolysis
Źródło:
Journal of Physiology and Pharmacology; 2000, 51, 4,1
0867-5910
Pojawia się w:
Journal of Physiology and Pharmacology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical modelling of innovative manufacturing processes with induced strain path changes
Autorzy:
Muszka, K.
Madej, Ł.
Graca, P.
Majta, J.
Powiązania:
https://bibliotekanauki.pl/articles/100123.pdf
Data publikacji:
2013
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
strain path
accumulative angular drawing
FE modelling
Opis:
A review of various bulk metal forming processes that take into account influence of strain path changes on material flow is presented in this paper. Particular attention is put on computer aided design of innovative angular accumulative drawing (AAD) operation. Research in the area of development of metal forming processes taken advantage of strain path phenomena is conducted in many scientific laboratories as the strain patch change effect influences many crucial properties of the deformed material. As a result it provides a possibility of forming materials, which are e.g. difficult to form in a conventional manner. Advantages and limitations of the AAD process are summarized and presented in this work. Difficulties in development of the complex rheological model that takes in to account strain path changes in the deformed material are also presented and discussed.
Źródło:
Journal of Machine Engineering; 2013, 13, 2; 59-68
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microstructure-Based Numerical Modelling of Manufacturing Processes of Nanolayered Materials
Autorzy:
Muszka, K.
Madej, Ł.
Graca, P.
Stefańska-Kądziela, M.
Majta, J.
Powiązania:
https://bibliotekanauki.pl/articles/99911.pdf
Data publikacji:
2014
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
nanolayered steel
severe plastic deformation
FEM modelling
Opis:
Recent development in the field of numerical modelling of innovative manufacturing processes, in which nanolayered materials can be produced, is presented in the paper. Combination of the Angular Accumulative Drawing, continuous wire drawing and wire flattening were used to produce thin nanolayers that will be used for subsequent production of nanolayered metal strips using Accumulative Roll Bonding process. Proposed methodology combines microstructural aspects of deformation such as strain-induced precipitation processes and development of dislocation substructures. Additionally, multiscale modelling approach based on the 3D Digital Materials Representation was utilized to support experimental research and to investigate inhomogeneous material behaviour during deformation. Proposed methodology provides a possibility of forming materials, which are e.g. difficult to form in a conventional manner. Advantages and limitations of the proposed model are summarized and discussed with respect to its potential application to precipitation strengthened bcc nanolayered materials.
Źródło:
Journal of Machine Engineering; 2014, 14, 1; 39-52
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Review of the book entitled "Conditions and directions of development of bio-economy in Poland", E.K. Chylek, J.Kopinski, A.Madej, M.Matyka, J.Ostrowski, H.Piorkowski, Ministry of Agriculture and Rural Development, Institute of Technology and Life Sciences in Falenty, Warsaw-Falenty 2017, p.194
Recenzja książki pt. "Uwarunkowania i kierunki rozwoju biogospodarki w Polsce", E.K. Chyłek, J.Kopiński, A.Madej, M.Matyka, J.Ostrowski, H.Piórkowski, Ministerstwo Rolnictwa i Rozwoju Wsi, Instytut Technologiczno-Przyrodniczy w Falentach, Warszawa-Falenty 2017, s.194
Autorzy:
Gradziuk, P.
Powiązania:
https://bibliotekanauki.pl/articles/2051667.pdf
Data publikacji:
2018
Wydawca:
Akademia Bialska Nauk Stosowanych im. Jana Pawła II w Białej Podlaskiej
Źródło:
Economic and Regional Studies; 2018, 11, 2; 113-118
2083-3725
2451-182X
Pojawia się w:
Economic and Regional Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synteza filipsytu z popiołów lotnych oraz jego potencjalne zastosowanie w inżynierii środowiska
The synthesis of phillipsite from fly ash and its potential application in environmental engineering
Autorzy:
Cader, J.
Czarna, D.
Kunecki, P.
Panek, R.
Madej, J
Lipiec, P.
Wdowin, M.
Franus, W.
Powiązania:
https://bibliotekanauki.pl/articles/394183.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN
Tematy:
popiół lotny
filipsyt
synteza hydrotermalna
XRD
XRF
fly ash
phillipsite
hydrothermal synthesis
Opis:
W artykule zbadano możliwość wykorzystania popiołów lotnych klasy C (otrzymywanych w wyniku spalania węgla brunatnego w kotle pyłowym) i F (otrzymywanych w wyniku spalania węgla kamiennego metodą konwencjonalną) jako substratów do syntezy materiału zeolitowego z grupy filipsytu. W tym celu przeprowadzono szereg syntez hydrotermalnych z wykorzystaniem reagentów takich jak wodorotlenek sodu (NaOH) oraz bromek tetrapropyloamoniowy (TPABr). W wyniku reakcji otrzymano docelowy materiał zeolitowy, zarówno z popiołu klasy C, jak i F. Otrzymane produkty syntezy, jak też popiołowe substraty reakcji, poddano charakterystyce chemicznej i mineralogicznej. Badania wykazały, że popiół lotny powstały z węgla brunatnego i kamiennego może być substratem w reakcjach syntez zeolitu, jakim jest filipsyt. Analiza porównawcza dyfraktogramów rentgenowskich produktów z obu typów popiołów wykazała, że lepszym substratem jest popiół klasy C otrzymywany w wyniku spalania węgla brunatnego w kotle pyłowym (w reakcji syntezy otrzymano lepiej wykształcone formy zeolitowe). W pracy dokonano także analizy literaturowej potencjalnych kierunków zastosowania filipsytu w inżynierii i ochronie środowiska. Na podstawie zweryfikowanych danych stwierdzono, iż dalszym kierunkiem badań będzie analiza możliwości wykorzystania otrzymanych materiałów jako potencjalnych sorbentów amoniaku.
The study examined the possibility of using class C fly ash (obtained as a result of brown coal combustion in a pulverized-fuel boiler) and class F (obtained as a result of conventional coal combustion) as substrates for the synthesis of zeolitic material from the phillipsite group. For this purpose, a series of hydrothermal syntheses were carried out using reagents such as sodium hydroxide (NaOH) and tetrapropylammonium bromide (TPABr). As a result of the reaction, the target zeolite material was obtained from both class C and F fly ash. The obtained synthesis products as well as the ash reaction substrates were subjected to chemical and mineralogical characterization. The studies have shown that fly ash formed from brown coal and hard coal may be a substrate in zeolite synthesis reactions to obtain phillipsite. A comparative analysis of X-ray diffractograms of products from both types of ash showed that class C ash obtained as a result of brown coal combustion in a pulverized-fuel boiler is a better substrate (in the synthesis reaction better-formed zeolites were obtained). The article also includes a literature analysis on the potential applications of phillipsite in engineering and environmental protection. Based on the verified data, it was found that the further direction of the research will be the analysis of the possibilities of using the obtained materials as potential ammonia sorbents.
Źródło:
Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi i Energią PAN; 2018, 102; 171-183
2080-0819
Pojawia się w:
Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi i Energią PAN
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-10 z 15

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