Autor: Wasilewicz, Piotr. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Materiały źródłowe do studiowania historii aparatu partyjno-politycznego ludowego Wojska Polskiego
Autorzy:: Wasilewicz, Piotr.
Data publikacji:: 1974
Wydawca:: Warszawa : Wojskowa Akademia Polityczna
Tematy:: Wojsko Polskie ludowe
Propaganda wojsko Polska 1943-1970 r.
Dostawca treści:: Bibliografia CBW

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Skocz do pozycji: 2.

Tytuł:: The investigations of suspension model and its experimental characteristics for the air springs of truck trailer
Autorzy:: Obst, Maciej
Kurpisz, Dariusz
Wasilewicz, Piotr
Powiązania:: https://bibliotekanauki.pl/articles/2146580.pdf
Data publikacji:: 2020
Wydawca:: Politechnika Poznańska. Instytut Mechaniki Stosowanej
Tematy:: air springs characteristics
damping elements of truck suspension
light truck trailer suspensions
suspension analysis of stanchion trailer
suspension research of light truck trailer
frame loads of air spring suspension
air spring experimental research
sprężyna powietrzna
drgania samochodu ciężarowego
zawieszenie samochodu
zawieszenie naczepy
tłumienie drgań
Opis:: Air springs applied as shock damping elements are often found in the design of variety modern truck and trailer suspensions. They can also be found as damping and stabilizing suspension elements in the passenger cars and other machines. The advantage of air springs, compared to steel coil springs or leaf springs, is a better damping quality in a wide range of frequencies. The air springs stiffness can be regulated according to the requirements and working conditions. The applied air springs also allow to stabilize the distance between the vehicle body and road level in function of loading. Some proposals of vehicle suspension models can be found in technical literature where the air spring is the main elastic subassembly. Mathematical model descriptions of the suspension with air spring for vehicles apply the thermodynamic laws and relationships between the mechanical forces of cooperating suspension elements, parts geometry (suspension arms), material stiffness (reinforced rubber) and other properties (damping). The results of own investigations on the suspension model of an air spring for cargo trailer have been taken into consideration in this paper. The presented suspension model was applied to design the frame construction of a light stanchion trailer where aerodynamic drag and construction mass were reduced. The suspension model of air springs for a trailer was applied for frame loads evaluation of the light trailer. It was also used for the strength analysis of the frame construction with the reduced mass. The estimated frame loads such as torque, normal forces and bending moments were used for strength estimation of the upgraded trailer frame.
Źródło:: Vibrations in Physical Systems; 2020, 31, 2; art. no. 2020221
0860-6897
Pojawia się w:: Vibrations in Physical Systems
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Evolution Of The Results Of 1500 Liver Transplantations Performed In The Department Of General, Transplant And Liver Surgery Medical University Of Warsaw
Autorzy:: Krawczyk, Marek
Grąt, Michał
Grąt, Karolina
Wronka, Karolina
Krasnodębski, Maciej
Stypułkowski, Jan
Masior, Łukasz
Hołówko, Wacław
Ligocka, Joanna
Nyckowski, Paweł
Wróblewski, Tadeusz
Paluszkiewicz, Rafał
Patkowski, Waldemar
Zieniewicz, Krzysztof
Pączek, Leszek
Milkiewicz, Piotr
Ołdakowska-Jedynak, Urszula
Najnigier, Bogusław
Dudek, Krzysztof
Remiszewski, Piotr
Grzelak, Ireneusz
Kornasiewicz, Oskar
Kotulski, Marcin
Smoter, Piotr
Grodzicki, Mariusz
Korba, Michał
Kalinowski, Piotr
Skalski, Michał
Zając, Krzysztof
Stankiewicz, Rafał
Przybysz, Marta
Cieślak, Bartosz
Nazarewski, Łukasz
Nowosad, Małgorzata
Kobryń, Konrad
Wasilewicz, Michał
Raszeja-Wyszomirska, Joanna
Piwowarska, Jolanta
Giercuszkiewicz, Dorota
Sańko-Resmer, Joanna
Rejowski, Sławomir
Szydłowska-Jakimiuk, Monika
Górnicka, Barbara
Wróblewska-Ziarkiewicz, Bogna
Mazurkiewicz, Michał
Niewiński, Grzegorz
Pawlak, Jacek
Pacho, Ryszard
Powiązania:: https://bibliotekanauki.pl/articles/1395614.pdf
Data publikacji:: 2015-05-01
Wydawca:: Index Copernicus International
Tematy:: liver transplantation
survival
outcomes
donors
center experience
center volume
Opis:: Liver transplantation is a well-established treatment of patients with end-stage liver disease and selected liver tumors. Remarkable progress has been made over the last years concerning nearly all of its aspects. The aim of this study was to evaluate the evolution of long-term outcomes after liver transplantations performed in the Department of General, Transplant and Liver Surgery (Medical University of Warsaw). Material and methods. Data of 1500 liver transplantations performed between 1989 and 2014 were retrospectively analyzed. Transplantations were divided into 3 groups: group 1 including first 500 operations, group 2 including subsequent 500, and group 3 comprising the most recent 500. Five year overall and graft survival were set as outcome measures. Results. Increased number of transplantations performed at the site was associated with increased age of the recipients (p<0.001) and donors (p<0.001), increased rate of male recipients (p<0.001), and increased rate of piggyback operations (p<0.001), and decreased MELD (p<0.001), as well as decreased blood (p=0.006) and plasma (p<0.001) transfusions. Overall survival was 71.6% at 5 years in group 1, 74.5% at 5 years in group 2, and 85% at 2.9 years in group 3 (p=0.008). Improvement of overall survival was particularly observed for primary transplantations (p=0.004). Increased graft survival rates did not reach the level of significance (p=0.136). Conclusions. Long-term outcomes after liver transplantations performed in the Department of General, Transplant and Liver Surgery are comparable to those achieved in the largest transplant centers worldwide and are continuously improving despite increasing recipient age and wider utilization of organs procured from older donors.
Źródło:: Polish Journal of Surgery; 2015, 87, 5; 221-230
0032-373X
2299-2847
Pojawia się w:: Polish Journal of Surgery
Dostawca treści:: Biblioteka Nauki

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