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Wyświetlanie 1-7 z 7
Tytuł:
Sorption of Sr-85 and Am-241 from liquid radioactive wastes by alginate beads
Autorzy:
Oszczak, A.
Fuks, L.
Powiązania:
https://bibliotekanauki.pl/articles/147934.pdf
Data publikacji:
2015
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
sorption
radionuclides
calcium alginate
barium alginate
strontium alginate
Opis:
The paper reports the adsorption of strontium(II) and americium(III) from aqueous solutions onto calcium alginate (CaA), barium alginate (BaA) and strontium alginate (SrA) beads. Adsorption process was studied in batch experiments as a function of the initial pH of the solution and the contact time. All sorbents were examined by the termogravimetric analysis (TG). Laboratory obtained spherical beads of CaA, BaA and SrA seem to be good metal sorbents from liquid radioactive wastes. A contact time of about 4 h and neutral pH of the initial aqueous solution have been proposed to be optimum conditions for Sr-85 and Am-241 removal from the contaminated solutions using alginate sorbents. Laboratory obtained beads of CaA, BaA and SrA are characterized by the decontamination factor (DF) equal to 85% for Sr(II) and 90% for Am(III).
Źródło:
Nukleonika; 2015, 60, No. 4, part 2; 927-931
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
GNSS systems in vehicle fleet management
GNSS w systemach zarządzania flotą pojazdów
Autorzy:
Tyszko, A.
Temlin, T.
Oszczak, S.
Powiązania:
https://bibliotekanauki.pl/articles/375164.pdf
Data publikacji:
2007
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
flota pojazdów
zarządzanie flotą
nawigacja satelitarna
GNSS
NAVSTAR GPS
GLONASS
EGNOS
vehicle fleet
fleet management
satelitte navigation
Opis:
Global Navigation Satellite System (GNSS) in connection with other technologies, such as mobile telephone GSM will improve management of chains of orders and fleet management in all types of transport. The paper describes existing navigation satellite systems (NAVSTAR GPS, GLONASS, EGNOS). It also presents advantages and barriers of using GNSS in transportation systems.
Globalny Satelitarny System Nawigacyjny (GNSS) w połączeniu z innymi technologiami, takimi jak telefonia komórkowa GSM, będzie wpływał na usprawnienie zarządzania łańcuchem zamówień oraz zarządzania flotą we wszystkich typach transportu. Referat opisuje istniejące nawigacyjne systemy satelitarne (NAVSTAR GPS, GLONASS, EGNOS). Zostały również przedstawione zalety oraz przeszkody wykorzystywania GNSS w systemach transportowych.
Źródło:
Transport Problems; 2007, 2, 2; 11-16
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
EGNOS - accuracy performance in Poland
Autorzy:
Mięsikowski, M.
Nowak, A.
Oszczak, B.
Specht, C.
Powiązania:
https://bibliotekanauki.pl/articles/320885.pdf
Data publikacji:
2006
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
dokładność systemów nawigacyjnych
EGNOS
accuracy of navigation systems
Opis:
EGNOS - the first European satellite navigation system is a join project of the European Space Agency, Eurocontrol, European Commission and represents the fist step to towards Galileo - autonomous navigation satellite system of the 2nd generation (GNSS-2). The system Operational Readiness Review (ORR), took place in June 2005 and resumed of more than eight years of studies, works, leaded by ESA and an industrial consortium with Alcatel Space as the Prime Contractor. The Initial Operations Phase has therefore started in July 2005 as an effect of successful negotiations between ESA and European Satellite Services Provider. During the last years many different test, trials and measurement campaigns have been done in positioning, navigation, time services and other application for improving different characteristics of EGNOS [4, 5]. Some of them were also realised in Poland [1, 2] and observed accuracy confirm high system performances. Poland is at the edge of the system coverage then the system disturbances could be more probable than in the central part of the Europe. Presented paper reports final results of the, long-term static measuring campaigns, which were done before the EGNOS System Test Bed (ESTB) ending. Two-week accuracy analyses were done and the position error statistic distributions of system were also compared with the classical DGPS based on LF/MF reference station.
Źródło:
Annual of Navigation; 2006, 11; 63-72
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of static GPS determinations obtained with the POZGEO service and GPS local network elaboration
Autorzy:
Rzepecka, Z.
Oszczak, S.
Wasilewski, A.
Kurpiński, G.
Powiązania:
https://bibliotekanauki.pl/articles/224947.pdf
Data publikacji:
2011
Wydawca:
Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:
GPS
POZGEO
Opis:
On the terrain of LGOM, the geodetic measurements aimed at deformation monitoring investigations began in early 60-ties. Exploitation of copper ore on the area of LGOM started in early 70-ties of the XX century. Since that time the deformation process is monitored with the best possible geodetic techniques available. In 1992 the classical measurements have been compiled with results of GPS positioning. GPS campaigns are performed once per year or at least every two years since that date. They comprise the whole control GPS point network of LGOM and some chosen points of the detailed shaft networks. The Polish part of the EUPOS network, called ASG-EUPOS, started to work in 2008, and a question arose how it can be used for the purpose of LGOM terrain deformation monitoring. One of suggestions was to take advantage of the automatic computations of static GPS sessions, which is possible within the ASG-EUPOS network through one of its services, called POZGEO. The main aim of this paper is to check what are the obtainable accuracies within this service and whether they are good enough to be applied in de formation monitoring. Results of comparisons of POZGEO coordinates with the coordinates computed using older GPS methods are given.
Źródło:
Reports on Geodesy; 2011, z. 1/90; 423-428
0867-3179
Pojawia się w:
Reports on Geodesy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Results of the first GPS measurement campaign for the determination of absolute vertical and horizontal deformations in the Main and Old City of Gdansk
Autorzy:
Baryła, R.
Oszczak, S.
Wielgosz, P.
Bakuła, M.
Cellmer, S.
Popielarczyk, D.
Jarmołowski, W.
Tyszko, A.
Oszczak, B.
Gregorczyk, R.
Rapiński, J.
Zapert, M.
Powiązania:
https://bibliotekanauki.pl/articles/224426.pdf
Data publikacji:
2007
Wydawca:
Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:
pomiary GPS
GPS
odkształcenie poziome
odkształcenie pionowe
Gdańsk
pomiary geodezyjne
GPS measurements
horizontal deformation
vertical deformation
altitude geodetic matrix
engineering surveying
Opis:
The results of GPS static measurements, conducted in the first measurement campaign at the reference and check points should be adopted as the values of reference for future observation results. The measurement procedures, developed for the first campaign, should be followed in further measurements. The measurement equipment (pole for forced centring of a GPS aerial, GPS aerial, GPS receiver) assigned to each point during the first campaign, should be used each time at the check points. The same calculation procedure should be followed in the analysis of the GPS observation data in future measurement campaigns. If the need to change the calculation procedure is justified, the calculations from previous measurement campaigns should be absolutely redone.
Źródło:
Reports on Geodesy; 2007, z. 1/82; 25-31
0867-3179
Pojawia się w:
Reports on Geodesy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preliminary results of DGPS/DGLONASS aircraft positioning in flight approaches and landings
Autorzy:
Grzegorzewski, M.
Jaruszewski, W.
Fellner, A.
Oszczak, S.
Wasilewski, A.
Rzepecka, Z.
Kapcia, J.
Popławski, T.
Powiązania:
https://bibliotekanauki.pl/articles/320789.pdf
Data publikacji:
1999
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
satelitarne systemy nawigacyjne
satellite navigation systems
Opis:
The use of satellite navigation by aerial craft becomes more and more common. Practically every newly produced plane or helicopter has GPS receiver installed on board. This system becomes widely used because it is simple and highly reliable. To improve the Required Performance Navigation Parameters (RNP), namely, the accuracy, availability, continuity, and integrity of aircraft navigation, the integrated GPS and GLONASS techniques can be used. Users are especially interested in integrated GPS/GLONASS receivers. The appearance of new ASHTECH GG24 receiver on the market has made it possible to estimate the possibility of utilisation of this type of receivers in aircraft navigation. The main goal of performed flight trials was the use of those receivers in satellite-based approaches and landings. The authors of the report carried out an experiment aiming at data collection during flight and approach to landing of plane TS11 Iskra. The airport of Deblin was chosen as the test area. The precise trajectory of the aircraft was calculated in the global WGS'84 system of co-ordinates for subsequent positions during flight, at one-second intervals, with the use of RTK techniques in "post-processing" mode. The RTK positions were compared with DGPS/DGLONASS real-time positions and next, the estimation of real-time differential accuracy was done. The preliminary results of the accuracy analysis are given in the paper.
Źródło:
Annual of Navigation; 1999, 1; 41-53
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Examination of EGNOS Safety-of-Live service in Eastern Slovakia
Autorzy:
Ciećko, A.
Grzegorzewski, M.
Oszczak, S.
Ćwiklak, J.
Grunwald, G.
Balint, J.
Szabo, S.
Powiązania:
https://bibliotekanauki.pl/articles/320579.pdf
Data publikacji:
2015
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
GNSS
GPS
SBAS
EGNOS
Safety-of-Life
satellite navigation
Opis:
The first PBN approach procedures in Slovakia became operationally effective at Bratislava and Košice airports as of 5 February 2015. The article presents the results of EGNOS Safety-of-Life Service preliminary examination in eastern Slovakia, just before official introduction of these procedures. The practical examination includes static test and test flight made with Cessna plane taking off at the airport in Bidovce — LZBD (just 16 km from international airport in Košice) and passing a route along eastern border of Slovakia. In this region the performance of EGNOS could be unsatisfactory due to lack of RIMS stations to the east from there. The experiment was performed on October 13, 2014 in cooperation of the Air Force Academy in Deblin, the Department of Aviation of Technical University in Košice and University of Warmia and Mazury in Olsztyn.
Pierwsze procedury podejścia do lądowania typu PBN (Performance-Based Navigation) na Słowacji zostały wdrożone na lotniskach w Bratysławie i Koszycach 5 lutego 2015 r. W artykule przedstawiono wyniki wstępnych analiz serwisu Safety-of-Life systemu EGNOS we wschodniej Słowacji, tuż przed oficjalnym wprowadzeniem tych procedur. Badania praktyczne obejmują test statyczny oraz lot testowy wykonany samolotem Cessna z lotniska Bidovce-LZBD (oddalonego zaledwie 16 km od międzynarodowego lotniska w Koszycach) po trasie wzdłuż wschodniej granicy Słowacji. W tym regionie jakość systemu EGNOS może być niezadowalająca z powodu braku stacji monitorujących RIMS na wschód od tego miejsca. Eksperyment przeprowadzono 13 października 2014 r. we współpracy Wyższej Szkoły Oficerskiej Sił Powietrznych w Dęblinie, Wydziału Lotnictwa Politechniki w Koszycach oraz Uniwersytetu Warmińsko-Mazurskiego w Olsztynie.
Źródło:
Annual of Navigation; 2015, 22; 65-78
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-7 z 7

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