Informacja

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

Wyszukujesz frazę "Lukasik, B." wg kryterium: Autor


Tytuł:
Zróżnicowanie form i układów zieleni na poznańskich placach miejskich
Diversity of the forms and compositions of the green in Poznan city squares
Autorzy:
Łukasik, B.
Powiązania:
https://bibliotekanauki.pl/articles/107049.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Rzeszowski. Wydział Biologiczno-Rolniczy
Tematy:
plac miejski
zieleń miejska
przestrzeń publiczna
city place
city greenery
public space
Opis:
Place miejskie to ważne elementy struktury każdego miasta. Wśród wielu elementów ich zagospodarowania duże znaczenie ma zieleń, która pojawia się w tych miejscach jako uzupełnienie wnętrza urbanistycznego lub główne jego wypełnienie. Celem pracy była identyfikacja form i układów roślin występujących na poznańskich placach, określenie udziału zieleni w strukturze ich zagospodarowania, ocena walorów kompozycji oraz ustalenie pożądanych kierunków ich przekształceń. Badania wykazały duże zróżnicowanie funkcji i sposobów zagospodarowania placów. Stwierdzono, że zieleń ma stosunkowo duży udział w kształtowaniu tych przestrzeni. Najczęściej występujące formy i układy to grupy krzewów, trawniki i rzędy drzew. Kompozycje na placach przedstawiają różną wartość. Niektóre sprawiają wrażenie dużej przypadkowości. Warto byłoby zwrócić większą uwagę na ich spójność i czytelność.
City squares are important elements of the structure of each city. Among the many elements of their management, the green has a great significance. It appears in these places as a supplement to the urban interior or its main complement. The aim of the study was to identify the forms and compositions of plants occurring in Poznan squares, to determine the contribution of the green in the structure of their arrangement, to evaluate values of the composition and to determine the desired directions of their transformations. Studies have shown a great diversity of functions and ways of managing squares. It was found that green has a relatively large contribution to the development of the space. The most common forms and systems are groups of shrubs, lawns and rows of trees. The compositions of the squares represent varied values. Some give the impression of a high randomness. It would be worthwhile to pay more attention to their cohesion and readability.
Źródło:
Topiarius. Studia krajobrazowe; 2016, T. 1; 235-247
2449-9595
2543-926X
Pojawia się w:
Topiarius. Studia krajobrazowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przedogródki niczyje – problem zagospodarowania przestrzeni publiczno-prywatnej na przykładzie otoczenia luksusowych kamienic w zespole zabudowy Maxa Johowa
Nobody’s front garden – problem the arrangements of public & private space for example surrounding luxurious a tenements in the Max Johow aggregate of buildings
Autorzy:
Łukasik, B.
Powiązania:
https://bibliotekanauki.pl/articles/87828.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Geograficzne
Tematy:
przestrzeń publiczna
przedogródek
zabudowa Maxa Johowa
rewitalizacja
Poznań
public space
front garden
Max Johow aggregate of buildings
revitalization
Poznan
Opis:
The text concerns on the quarter of buildings (between: Wyspianska st Ułańska st Grottgera st and Matejko st) the authorship of Max Jahow, ones of front poznanian architects start of XX century. Terrain localized behind disassembly them brickwork of city was designed under buildings of representative apartment‐house for mainly official, military, doctors and barristers. Traced streets were divided whole area on smaller lodgings newly. The draughts of tenements along their sides were raised. The inseparable unit of complex of buildings the pattern on Berlinian solutions, the spacious internal court as well as magnificent front gardens became – today mostly untidy. For a years 2006–2012 was planned of realization – ʺThe municipal Program of Revitalization for city of Poznan ”, which include for ex. the revaluation of area in region Matejko st (at one time Nowoogrodowa st) as well as the antique townplanning aggregate of Max Johow. Aim of this act is the restoration of foundation of these rules the aggregate of buildings of lost architectural powers of historical the art nouveau tenements as well as the improvement of conditions of residence. The necessity of growth of integration local community was underlined thereat in rules on thing of revitalization. Except tenements the programme of revitalization has to hug their surroundings, and it ties special evener to new management of internal court. The sentence of authoress of present publication the too small pay attention was turned on area of gardens situated before fronts of buildings. Therefore the opinion of state of survival is the aim of present running, the compositive values and natural the as well as aesthetical powers the front garden of tenements, and also opinion of so far participation the part exists occupants this area. The conclusions concern the directions more far the conduct from areas the front garden – they would make up still the green binding of in the style buildings. Range and possibility of the occupantsʹ part were qualified in care over these terrains simultaneously.
Źródło:
Prace Komisji Krajobrazu Kulturowego; 2008, 10; 78-86
1896-1460
2391-5293
Pojawia się w:
Prace Komisji Krajobrazu Kulturowego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Full-electric, hybrid and turbo-electric technologies for future aircraft propulsion systems
Autorzy:
Łukasik, B.
Wiśniowski, W.
Powiązania:
https://bibliotekanauki.pl/articles/243487.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
full electric
turbo-electric
hybrid systems
distributed propulsion systems
Opis:
Recently a huge progress in the field of electrical machines makes them more available for aviation. Assuming a big leap forward of electric technology in the near future, many research institutes around the World examine a revolutionary propulsion system which employs electrical machines. This idea can be a perfect response to a drastically growing air traffic and its demands about emission and fuel consumption reduction. There are already manufactured full electric, ultralight airplanes, which show that the technology is promising and future-proof. What is more it seems to be a key enabler for the development of the other technology that will influence the future of aircraft design and will allow introducing completely new airplane architectures. That is why Institute of Aviation in collaboration with The Ohio State University conducts investigation and analysis on feasibility of using such systems for aircraft propulsion. For this task a completely new tool based on Numerical Propulsion System Simulation (NPSS) environment is being developed. It will enable to analyse the electric devices conjugated with turbine engine as a whole propulsion system in the matter of its performance characteristics. The purpose of this paper is to present some of the most promising ideas and already accomplished analysis of different kinds of architectures. The analysis and optimization of the system, as well as cost effectiveness will be presented.
Źródło:
Journal of KONES; 2016, 23, 4; 305-310
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena krajobrazu wsi wielkopolskiej na przykładzie Owińsk
Evaluation of landscape of the Wielkopolska countryside based on a village of Owińsk
Autorzy:
Targonska, A.
Lukasik, B.
Powiązania:
https://bibliotekanauki.pl/articles/86897.pdf
Data publikacji:
2010
Wydawca:
Polska Asocjacja Ekologii Krajobrazu
Tematy:
krajobraz
wies
Wielkopolska
waloryzacja
Źródło:
Problemy Ekologii Krajobrazu; 2010, 27
1899-3850
Pojawia się w:
Problemy Ekologii Krajobrazu
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Aviation piston engines on-condition maintenance – proposal
Eksploatacja lotniczych silników tłokowych według stanu technicznego – propozycja
Autorzy:
Głowacki, P.
Łukasik, B.
Powiązania:
https://bibliotekanauki.pl/articles/133803.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
on-condition maintenance
piston engine
engine condition monitoring
eksploatacja według stanu technicznego
silnik tłokowy
monitorowanie stanu technicznego silnika
Opis:
The article presents a proposal of the established in the institute of aviation program and tools that are to enable General aviation operators in our country to perform on-condition maintenance of piston engines. Program apart from the existing (strictly supervised) Engine Manual tasks, introduces new mandatory maintenance activities such as: monitoring of engine parameters during cruise and climb, with determination of their diagnostic tolerance limits (never been performed in the maintenance practice), oil spectrographic analysis, also with determination of tolerances and oil particle size monitoring. The article shows results of half year long monitored exploitations of Continental IO-240-B engines installed on Diamond Da20-C1 „Katana” aircraft.
Artykuł prezentuje opracowaną w Instytucie Lotnictwa koncepcję umożliwiającą operatorom lotnictwa ogólnego w Polsce eksploatację lotniczych silników tłokowych według stanu technicznego. Program obsługi, oprócz ściśle monitorowanych obowiązujących już czynności obsługowych wprowadza nowe, jak: zapis i monitorowanie parametrów pracy silnika podczas wznoszenia i lotu poziomego z wyznaczeniem ich granic tolerancji diagnostycznej, analizę spektrograficzną oleju silnikowego z wyznaczeniem dopuszczalnych wielkości zawartości charakterystycznych pierwiastków i monitorowanie wielkości opiłków ferromagnetycznych. W artykule przedstawiono rezultaty nadzorowanej półrocznej eksploatacji silników IO-240-B firmy Continental zainstalowanych na samolotach Diamond Da20-C1 „Katana”.
Źródło:
Combustion Engines; 2015, 54, 3; 52-63
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dziedzictwo przyrodniczo-kulturowe Złotowa – przeszłość i teraźniejszość zapisana w krajobrazie miasta
The natural and cultural heritage of Złotów – the past and present written in the landscape of the town
Autorzy:
Łukasik, B.
Rydzewska, A.
Powiązania:
https://bibliotekanauki.pl/articles/370128.pdf
Data publikacji:
2016
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
architektura krajobrazu
cmentarze
parki
Peter Joseph Lenné
zieleń miejska
Złotów
landscape architecture
cemeteries
parks
urban greenery
Zlotów
Opis:
Przeszłość Złotowa została zapisana w jego krajobrazie. Ważne kulturowo i przyrodniczo elementy stanowią parki, zieleńce, cmentarze i inne obszary cenne krajobrazowo. Celem niniejszego opracowania była ocena stanu aktualnego i określenie znaczenia krajobrazowego wybranych obszarów zieleni Złotowa. W wyniku prac ustalono dalsze wytyczne, pozwalające na ochronę krajobrazu kulturowo-przyrodniczego miasta.
The past of the Złotów was also written in its landscape. Parks, lawns, cemeteries and other areas of scenic value are important elements due to their cultural and natural values. The aim of this study was to assess the status quo and to determine the scenic significance of selected green areas in Złotów. The study resulted in further guidelines for the protection of the cultural and natural landscape of the town.
Źródło:
Przestrzeń i Forma; 2016, 26; 361-374
1895-3247
2391-7725
Pojawia się w:
Przestrzeń i Forma
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza sposobów upiększania krajobrazu rolniczego w 1 połowie XIX wieku na przykładzie majątku Brzeziny
The analysis of the ways to improve aesthetic value of agricultural landscape in the first half of the 19th century based on the example Brzeziny estate
Autorzy:
Lukasik, B.
Targonska, A.
Powiązania:
https://bibliotekanauki.pl/articles/86458.pdf
Data publikacji:
2010
Wydawca:
Polska Asocjacja Ekologii Krajobrazu
Tematy:
krajobraz
farma
Źródło:
Problemy Ekologii Krajobrazu; 2010, 27
1899-3850
Pojawia się w:
Problemy Ekologii Krajobrazu
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The study of the continuously rotating detonation combustion chamber supplied with different types of fuel
Autorzy:
Łukasik, B.
Czyż, S.
Irzycki, A.
Rowiński, A.
Powiązania:
https://bibliotekanauki.pl/articles/246684.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
rotating detonation
air/Jet-A detonation
detonation combustion chamber
internal combustion engine
Opis:
The paper summarizes research that was conducted last year as part of the project of “Turbine engine with detonation combustion chamber”. In this project, throughout 2012 and early 2013, tests were carried out on a test stand connected to the compressed air system. Research, of the rotating detonation phenomena, was carried out for a number of detonation chambers with different interior channel geometry. In addition, for each geometry configuration, tests were carried out for different levels of choking of the chamber outlet and hence for different pressures conditions inside the detonation chamber. This article presents the results of tests carried out for gaseous (hydrogen), hybrid (hydrogen + kerosene) and liquid (Jet-A) fuels, using different types of fuel injectors and for different fuel injection configuration settings (inside the chamber, or in front of the chamber). During these tests, parameters such as pressure behind the detonation wave (using piezoelectric sensors), the static pressure in front of and inside the detonation chamber and temperature: before, inside and at the outlet of the chamber, were measured. Research was performed for the various mass flow rates of air and fuel injected into the chamber that means for the different air-fuel equivalence ratios (Lambda). The main achievement of this study was to obtain a stable and reproducible rotating detonation of air and heated kerosene (Jet-A) mixture, thus the results presented in this paper presents mainly these tests as the most interesting to the reader
Źródło:
Journal of KONES; 2013, 20, 3; 259-266
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of combustion chamber with a rotating detonation
Autorzy:
Łukasik, B.
Rowiński, A.
Irzycki, A.
Snopkiewicz, K.
Powiązania:
https://bibliotekanauki.pl/articles/246882.pdf
Data publikacji:
2012
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
internal combustion engine
turbine engines
combustion chamber
rotating detonation
Opis:
Institute of Aviation in Warsaw realizes the project concerning the application of the phenomenon of combustion with rotating detonation to the combustion chamber designed and destined for turbine engines. The test chamber is adapted for supplying both with liquid (aviation kerosene) and gaseous fuels in the form of mixture with compressed air. It is equipped with a probe for pressure and temperature measurements inside the flame tube as well as at its inlet and outlet sections. The measuring system allows measurement of physical phenomenon at low (1 kHz) and high (1 MHz) frequencies. Electric signals representing temperature and pressure sensor's measuring quantities, fuel and compressed air supply systems parameters and ignition-triggering values are collected using data acquisition system controlled by a computer. The prototype of the combustion chamber was examined at the especially designed test facility to determine at quasi-static operating conditions its following characteristics: speed of inside shock wave, exhaust gas thermodynamic parameters and ignition and going-out limits of gaseous fuel. In this article construction of test bench, schematic diagrams of measurement and power supply systems as well as the research process, the way of measurement data analysis recorded during the carried-out experiments and data validation manner are detailed described. The method of measurement data processing, the resulting graphs, and the conclusions of the study are presented as well.
Źródło:
Journal of KONES; 2012, 19, 2; 313-320
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Testing of initiation of rotating detonation process in hydrogen - air mixtures
Autorzy:
Balicki, W.
Irzycki, A.
Łukasik, B.
Snopkiewicz, K.
Powiązania:
https://bibliotekanauki.pl/articles/247318.pdf
Data publikacji:
2012
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
internal combustion engine
turbine engines
combustion chamber
rotating detonation
Opis:
The paper presents results of some research work done in the project, which aims to apply of an innovative combustion chamber to the turbine engine. Expected benefits of using of a new chamber in which classical deflagration type combustion process would be replaced with a detonation combustion type, arise from greater efficiency of FickettJacobs cycle, which corresponds to rotating detonation combustion, in comparison to "classical" Brayton cycle, characteristic of deflagration combustion. The presented task concerned fundamental research carried out on test bench designed and built at the Institute of Aviation in Warsaw. To initiate the detonation combustion in the fuel-air mixtures the ignition device of appropriately high energy is necessary. The released energy should be directed to the area where the mixture has proper constitution - preferably close to stoichiometric one. Four different ignition manners were examined in the course of research: electrical ignition system adapted from turbine engine (semiconductor spark plug), powder charge ignition (handgun cartridges), detonation primer ignition using pentryt, and high voltage discharge (plasma jet). The appearance of detonation type combustion was identified on the basis of combustion gas pressure run, measured using piezoelectric sensors at a frequency of 1 MHz.
Źródło:
Journal of KONES; 2012, 19, 2; 25-34
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Leakage of mono- and divalent cations through the weak-base anion exchange membrane in the process of electrodialysis of H2SO4 and its metal salt mixture
Autorzy:
Kultys, M.
Koter, S.
Gilewicz-Łukasik, B.
Koter, I.
Powiązania:
https://bibliotekanauki.pl/articles/347031.pdf
Data publikacji:
2011
Wydawca:
Politechnika Bydgoska im. Jana i Jędrzeja Śniadeckich. Wydział Technologii i Inżynierii Chemicznej
Tematy:
anion-exchange membrane
electrodialysis
metal cation leakage
sulfuric acid
Opis:
Experimental results on the separation of sulfuric acid from its mixture with sodium- and magnesium sulfate, respectively, by the electrodialytic method have been presented. The Selemion AVV membrane as anion-exchange membrane was used. It was found that the leakage of Na+ from the cathode to the anode side of the AAV was higher than that of Mg2+. The leakage of Na+ decreased with the acid concentration whereas that of Mg2+ increased. Surprisingly enough, the permeability of Na+ increased with the electric current density, indicating a substantial contribution of electroosmotic convection to the Na+ flow. The current efficiency of the anions transport (HSO4 -, SO4 2-) through the AAV hardly exceeded 50%. It was independent of the kind of salt present on the cathode side of the AAV.
Źródło:
Ars Separatoria Acta; 2011, 8; 101-108
1731-6340
Pojawia się w:
Ars Separatoria Acta
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measurements of pressure in front of shock wave : assessment of methodology influence on the measurement results on the basis of experiments with the shock tube
Autorzy:
Perkowski, W.
Irzycki, A.
Kawalec, M.
Łukasik, B.
Snopkiewicz, K.
Powiązania:
https://bibliotekanauki.pl/articles/242676.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
shock wave
shock tube
pressure measurements
Opis:
The experiments, described in the article, are related to research of a rotating detonation that has been conducted in the Institute of Aviation in Warsaw since 2009, under the OPIE project: “Turbine engine with detonation combustion chamber”. Measurements of the shock wave parameters, are among the most difficult in the art. This is due to high speed of the wave transition, and above all, a very small thickness of the shock wave. For the purposes of the mentioned project, a methodology for measuring pressure on the rotating detonation wave was developed. It included the type of sensors, their location and their protection from heat and flames. In order to determine the capabilities, limitations and accuracy of the method that was used, a series of experiments were planned and carried out. They enabled the assessment of the impact, on the measurement of pressure in the shock wave, of the following factors: the location of the sensor (frontal and lateral) relative to the shock wave front, protrusion or retraction of the sensor in its housing, the covering of the sensor with a protective layer (such as a high temperature silicon). This paper presents the results of the experiments that were carried out with use of a small shock tube of a simple design. The high-pressure part of the tube (so-called “driver”) was charged with the compressed nitrogen gas. The membrane was designed to be torn by pressure and pressure magnitude of the shock wave were measured by a “twin pair” of the Kistler 603B type piezoelectric sensors, one of which was always the reference sensor.
Źródło:
Journal of KONES; 2013, 20, 4; 333-340
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Three - dimensional numerical simulations of the combustion chamber of the rotating detonation engine
Autorzy:
Folusiak, M.
Swiderski, K.
Kobiera, A.
Lukasik, B.
Wolanski, P.
Powiązania:
https://bibliotekanauki.pl/articles/245644.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
rotating detonation engine (RDE)
RDE
computational fluid dynamics (CFD)
CFD
REFLOPS
Opis:
From 2010 Warsaw University of Technology (WUT) and Institute of Aviation (IoA) jointly implement the project under the Innovative Economy Operational Programme entitled ‘Turbine engine with detonation combustion chamber’. The goal of the project is to replace the combustion chamber of turboshaft engine GTD-350 with an annular detonation chamber. During the project, the numerical group that aims to develop computer code allowing researchers to simulate investigated processes has been established. Simulations provide wide range of parameters that are hardly available from experimental results and enable better understanding of investigated processes. Simulations may be also considered as a cheap alternative for experiments, especially when testing geometrical optimizations. In this paper the analysis of simulation results of the combustion chamber of the Rotating Detonation Engine (RDE) investigated at the IoA in Warsaw is presented. Primarily, REFLOPS USG which has become a fundamental numerical tool in the research of the RDE at the IoA is briefly described and governing equations and numerical methods used are shortly presented. Some aspects of numerical simulations of the RDE, related to selection of combustion mechanism, and an initiation of rotating detonation are provided. Secondly, results of simulations of inviscid gas with numerical injectors of hydrogen are compared with available experimental results. Three different wave patterns are identified in numerical solution and briefly described. Results of simulations are compared to experimental results in combustion chamber. Results presented in this paper are part of the project UDA-POIG.01.03.01-14-071 ‘Turbine engine with detonation combustion chamber’ supported by EU and Ministry of Regional Development, Poland.
Źródło:
Journal of KONES; 2013, 20, 1; 83-88
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical tools for three dimensional simulations of the rotating detonation engine in complex geometries
Autorzy:
Swiderski, K.
Folusiak, M.
Kobiera, A.
Lukasik, B.
Wolanski, P.
Powiązania:
https://bibliotekanauki.pl/articles/242471.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
CFD
RDE
rotating detonation engine (RDE)
AMR
REFLOPS
hydrogen
Opis:
This paper describes the development of a computational code REFLOPS USG (REactive FLOw solver for Propulsion Systems on UnStructured Grids) based on the Favre averaged Navier-Stokes equations with chemical reactions for semi-ideal multicomponent gas to predict the structure and dynamics of three-dimensional unsteady detonation as it occurs in the Rotating Detonation Engine (RDE). This work provides an overview of second order accurate in time and space finite volume method applied to conservation equations and its implementation on unstructured self-adaptive tetrahedral or hexahedral three-dimensional cell-centred meshes. The inviscid fluxes are given by the Riemann solver and stabilization is ensured by the proper limiters inherited from the TVD theory or gradient based limiters. The stiff equations of chemical kinetics are solved by use of implicit DVODE (Double precision Variablecoefficient Ordinary Differential Equation solver, with fixed-leading-coefficient implementation) routine or by explicit Chemeq2 routine. Additional improvements are incorporated into the code such as parallelization in OpenMP and implementation of NVIDIA CUDA technology. REFLOPS USG has become a fundamental numerical tool in the research of RDE at the Institute of Aviation in Warsaw, in frame of Innovative Economy project UDA-POIG.01.03.01-14-071 ‘Turbine engine with detonation combustion chamber’ supported by EU and Ministry of Regional Development, Poland. The simulations presented in this paper are based on inviscid or viscous multicomponent semi-ideal gas flow with chemical reactions. Due to high computational costs only simple chemical reaction mechanisms are used here.
Źródło:
Journal of KONES; 2013, 20, 1; 329-336
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Type III Polyglandular Autoimmune Syndromes in children with type 1 diabetes mellitus
Autorzy:
Ben-Skowronek, I.
Michalczyk, A.
Piekarski, R.
Wysocka-Lukasik, B.
Banecka, B.
Powiązania:
https://bibliotekanauki.pl/articles/49668.pdf
Data publikacji:
2013
Wydawca:
Instytut Medycyny Wsi
Opis:
Introduction: Type III Polyglandular Autoimmune Syndrome (PAS III) is composed of autoimmune thyroid diseases associated with endocrinopathy other than adrenal insufficiency. This syndrome is associated with organ-specific and organ-nonspecific or systemic autoimmune diseases. The frequency of PAS syndromes in diabetic children is unknown. Objectives: The aim of the study was to evaluate the incidence of PAS III in children with diabetes mellitus type 1. Patients and methods: The study consisted of 461 patients with diabetes mellitus type 1(T1DM), who were 1-19 years of age. TSH, free thyroxin, TPO autoantibodies, and thyroglobulin autoantibodies were determined annually. Autoimmune Hashimoto’s thyroiditis was diagnosed in children with positive tests for TPO Ab and Tg Ab and thyroid parenchymal hypogenicity in the ultrasound investigation. Elevated TSI antibodies were used to diagnose Graves’ disease. Additionally, Anti-Endomysial Antibodies IgA class were determined every year as screening for celiac disease. During clinical control, other autoimmune diseases were diagnosed. Adrenal function was examined by the diurnal rhythm of cortisol. Results: PAS III was diagnosed in 14.5% children: PAS IIIA (T1DM and autoimmune thyroiditis) was recognized in 11.1 % and PAS III C (T1DM and other autoimmune disorders: celiac disease, and JIA, psoriasis and vitiligo) in 3.5% children. PAS IIIA was more prevalent in girls than in boys – 78.4% versus 21.6% (p<0.05). PAS III was observed between 1-5 years of life in 66.6% children; the frequency decreased in consecutive years and successively increased in the adolescence period to 22.7%. Conclusions: PAS III occurs in 14.5% of children with DM type1 and the incidence is positively correlated with patients’ age and female gender. Children with PAS III should be carefully monitored as a group at risk for the development of other autoimmune diseases.
Źródło:
Annals of Agricultural and Environmental Medicine; 2013, 20, 1
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł

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