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Wyświetlanie 1-6 z 6
Tytuł:
Evolution of the MSBS Grot Assault Rifle from Version A0 to Version A2
Rozwój karabinka MSBS GROT od wersji A0 do wersji A2
Autorzy:
Woźniak, Ryszard B.
Zahor, Mirosław
Madej, Paweł
Pawlak, Janusz
Piechota, Norbert
Powiązania:
https://bibliotekanauki.pl/articles/1837966.pdf
Data publikacji:
2021
Wydawca:
Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Tematy:
mechanical engineering
firearms
weapons
assault rifle
mechanika
broń
broń palna
broń strzelecka
karabinek
Opis:
On 15 December 2017, Fabryka Broni “Łucznik” - Radom Sp. z o.o. (FB Radom), a subsidiary of Polska Grupa Zbrojeniowa S.A., delivered the first batch of 1,000 MSBS Grot C 16 FB M1 calibre 5.56 mm standard (basic) assault rifles (version A0) to the Polish Territorial Defence Force and thus initiated the process of deployment of the assault rifle in the Polish Armed Forces. MSBS Grot was developed by Polish design and process engineers at FB Radom and the Military University of Technology (MUT, Warsaw, Poland) who by mediation of the proper Armament Acquisition and Development Department collected the improvement suggestions and operational feedback from 2.5 years of testing by operators from the armed forces. The suggestions and feedback were thoroughly analysed and discussed during periodic meetings attended by the representatives of the Territorial Defence Force (TDF) Command, the Special Forces Component Command, the 3rd Regional Military Representation (RMR), MUT, and FB Radom. Based on the conclusions from the testing period and the results of theoretical and instrumental testing of the solutions proposed for implementation, the MSBS Grot assault rifles show systematic improvements up to the current version, A2. This paper presents the design of the MSBS Grot Version A0 assault rifle and the construction and processing modifications for version A1 and version A2. During the optimisation effort backed by theoretical and instrumental testing, there was special focus on the assurance of high operating safety and reliability, plus the required ergonomics of the assault rifle under various operating conditions. The paper also presents the avenues for further potential improvements of MSBS Grot.
W dniu 15 grudnia 2017 roku Fabryka Broni „Łucznik” - Radom Sp. z o.o. (FB Radom), wchodząca w skład Polskiej Grupy Zbrojeniowej S.A., dostarczyła Wojskom Obrony Terytorialnej pierwszą partię liczącą 1 000 sztuk 5,56 mm karabinków standardowych (podstawowych) MSBS GROT C 16 FB M1 (w tzw. wersji A0), początkując proces jego wprowadzania do uzbrojenia Sił Zbrojnych RP. Broń została opracowana przez polskich konstruktorów i technologów z FB Radom i Wojskowej Akademii Technicznej (WAT), którzy przez 2,5 roku użytkowania karabinków zbierali od żołnierzy – za pośrednictwem Gestora sprzętu wojskowego (SpW) - doświadczenia, propozycje i uwagi z eksploatacji. Były one wnikliwie analizowane i dyskutowane podczas cyklicznych spotkań z udziałem przedstawicieli: Dowództwa Wojsk Obrony Terytorialnej, Dowództwa Komponentu Wojsk Specjalnych, 3 Rejonowego Przedstawicielstwa Wojskowego, WAT i FB Radom. Na podstawie podjętych wniosków oraz wyników przeprowadzonych badań teoretycznych i instrumentalnych proponowanych do zastosowania rozwiązań, karabinki MSBS GROT konsekwentnie udoskonalano, uzyskując obecnie broń w wersji A2. W pracy przedstawiono konstrukcję karabinka MSBS GROT w wersji A0 oraz zmiany konstrukcyjno-technologiczne jakie w nim wprowadzono, uzyskując wersję A1, a następnie wersję A2. Podczas prac optymalizacyjnych, popartych badaniami teoretycznymi i instrumentalnymi, szczególną uwagę zwrócono na zapewnienie wysokiego bezpieczeństwa użytkowania i niezawodności działania oraz pożądanej ergonomii karabinka w różnych warunkach eksploatacji. Ponadto zaprezentowano kierunki dalszych, możliwych udoskonaleń karabinka MSBS GROT.
Źródło:
Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa; 2021, 12, 1 (43); 75-86
2081-5891
Pojawia się w:
Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermogravimetric analysis of sewage sludge and straw co-firing
Autorzy:
Arora, Amit
Pawlak-Kruczek, Halina
Ostrycharczyk, Michał
Serafin-Tkaczuk, Monika
Kowal, Mateusz
Subramanian, Navaneethan
Madejski, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/37220070.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
hermogravimetric analysis
sewage sludge
straw
co-firing
Opis:
The main objective of this study is to perform thermogravimetric analysis on sewage sludge and straw co-firing at selected proportions. Sewage sludge is a residue from wastewater consisting of organic matter, toxic contaminants and heavy metals [1]. It is estimated that 10 million tonnes of sewage sludge are produced every year in European states, which represents 4.1% of all waste generated in the EU annually – about 250 million tonnes of dry solids [2]. Landfilling is deemed to be the most expensive way to dispose of sewage sludge, with average total costs ranging from EUR 260 to 350 per tonne of dry matter [3]. Straw is a major biomass solid waste from agriculture; it can be considered CO₂ neutral. The availability is wide in Europe that it is estimated to be 33 million metric tonnes [4]. A suite of thermogravimetric analysis and derivative thermogravimetric experiments was performed for this study, followed by the determination of the kinetic parameters and characteristic temperatures for these materials and their blends at different proportions. Through this analysis we can obtain information about the thermal behaviour, energy activation and ash content, and the decomposition of gaseous products can be identified the help of thermal decomposition [5].
Źródło:
Zeszyty Energetyczne; 2020, 7; 243-254
2658-0799
Pojawia się w:
Zeszyty Energetyczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chitosan-derivatives in combinations with selected porphyrinoids as novel hybrid materials for medicine and pharmacy
Autorzy:
Szczepański, Radosław
Gadomska, Laura
Michalak, Marek
Bakun, Paweł
Pawlak, Kacper
Gośliński, Tomasz
Ziegler-Borowska, Marta
Czarczyńska-Goślińska, Beata
Powiązania:
https://bibliotekanauki.pl/articles/1034035.pdf
Data publikacji:
2020
Wydawca:
Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Tematy:
chitin
chitosan
hybrid materials
imaging
photodynamic therapy
porphyrinoids
Opis:
Chitosan and its derivatives are renewable biopolymers characterized by high biocompatibility; therefore, they are harmless to humans and allow immune tolerance and improved hydrophilicity. Moreover, chitosan has been the most studied of all polysaccharides used in biomedical applications during the last decade. Combinations of chitosan and porphyrinoid compounds in hybrid materials have revealed many potential applications for biomedical sciences. The main advantage of such materials is an increase in the solubility of porphyrinoids in body fluids and therefore greater release of singlet oxygen to the treated tissue. Chitosan-based drug delivery systems can improve the targeting of porphyrinoids and their release at predetermined locations and finally achieve desired therapeutic effects with minimal side effects. Hence, porphyrinoid-chitosan materials can be applied in drug delivery systems, cancer theranostics and magnetic resonance imaging. The combination of chitosan and porphyrinoids also appears useful in the healing and repairing of damaged organs, tissue engineering, regenerative medicine, as well as dressing materials. Huge benefits are related to the treatment of wounds, which has been presented for self-healing hydrogels based on chitosan and porphyrinoids. Furthermore, the chitosan/porphyrinoid combinations have revealed enormous benefits for antimicrobial photodynamic therapy.
Źródło:
Progress on Chemistry and Application of Chitin and its Derivatives; 2020, 25; 63-78
1896-5644
Pojawia się w:
Progress on Chemistry and Application of Chitin and its Derivatives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The multicenter study result of diagnosis and treatment laryngeal carcinoma in Poland from 2001 to 2010
Autorzy:
Osuch-Wójcikiewicz, Ewa
Bruzgielewicz, Antoni
Majszyk, Daniel
Łuczaj, Jarosław
Pawlak-Osińska, Katarzyna
Stodulski, Dominik
Pomarańska, Magdalena
Kaczmarczyk, Dariusz
Leszczyńska, Małgorzata
Domka, Wojciech
Miśkiewicz-Orczyk, Katarzyna
Postuła, Sylwia
Golusiński, Paweł
Piotrowicz, Michał
Niemczyk, Kazimierz
Powiązania:
https://bibliotekanauki.pl/articles/1400552.pdf
Data publikacji:
2016
Wydawca:
Index Copernicus International
Tematy:
laryngeal carcinoma
epidemiology
clinical characteristics
multicenter study
Opis:
Introduction: The laryngeal cancer is the most frequently diagnose malignancy in head and neck region. The highest morbidity is within male patients in the age range between 50 and 70 years. The multicenter study, coordinated by Oto-laryngology Department of Medical University of Warsaw, was designed to investigate the epidemiology of laryngeal cancer in Poland from 1980 and to analyze the evolution of diagnostic and therapeutical procedures over the years.Material and methods: There was performed retrospective analysis of the medical records of patients with laryn-geal cancer hospitalized and treated in 12 otolaryngology centers in Poland from 2001 to 2010. The Microsoft Access 2003 (SP 2) platform was used to collect the data and subsequent statistical analysis.Results: There were collected data from 4124 patients, 3682 men (89,3%) and 442 women (10,7%). The largest group consisted of patients in the age range between 50 and 60 years (41,5%) and the second large group was of those be-tween 60 and 70 years (29,6%). The history of heavy cigarettes smoking was obtained from 81,3% of patients. Re-garding the staging of laryngeal cancer, there were 1634 patients with cancer stage of I or II, including 5 patients with carcinoma in situ and 2490 patients with III or IV stage. The most frequent localization of the cancer was the glottis, followed with invasion of all three laryngeal levels and tumors occupying both the epiglottis and glottis. The major-ity of patients – 1367 (33%) – has the T3 tumor advancement. The lymph nodes metastases (N) were present in 1216 (29,5%) patients and among them the N2b and N2c advancement ( lymph node larger than 6 cm, multiple) was de-tected in 533 of patients (13%). The lymph nodes involvement occurred in majority within advanced tumors of T3 or T4a. Considering the treatment options they varied depending on the staging of laryngeal cancer. The sole surgical procedures were performed in 73,7% of patients with cancer stage of I or II and in only 28.6% of patients with the stage of III or IV. The advanced tumors were in majority treated with the combined therapy: surgery and radiotherapy. The overall survival in patients with cancer stage of I and II was 64% and 61% for those with stage III and IV.Conclusions: The rate of laryngeal cancer detection is quite high in Poland, however the period from the onset of symptoms until diagnosis should be reduced. The effectiveness of surgical treatment is definitely unsatisfactory. The project to create a multicenter permanent base for monitoring the course of diagnosis and treatment in patients with laryngeal cancer surely will verify the procedures and enable to achieve better results. Continuation of this project is a task for all otorhinolaryngologists.KEYWORDS:laryngeal carcinoma, epidemiology, clinical characteristics, multicenter study
Źródło:
Polski Przegląd Otorynolaryngologiczny; 2016, 5, 2; 1-11
2084-5308
2300-7338
Pojawia się w:
Polski Przegląd Otorynolaryngologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
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
Artykuł
Tytuł:
1000 Liver Transplantations at the Department of General, Transplant and Liver Surgery, Medical University of Warsaw - Analysis of Indications and Results
Autorzy:
Krawczyk, Marek
Grąt, Michał
Barski, Krzysztof
Ligocka, Joanna
Antczak, Arkadiusz
Kornasiewicz, Oskar
Skalski, Michał
Patkowski, Waldemar
Nyckowski, Paweł
Zieniewicz, Krzysztof
Grzelak, Ireneusz
Pawlak, Jacek
Alsharabi, Abdulsalam
Wróblewski, Tadeusz
Paluszkiewicz, Rafał
Najnigier, Bogusław
Dudek, Krzysztof
Remiszewski, Piotr
Smoter, Piotr
Grodzicki, Mariusz
Korba, Michał
Kotulski, Marcin
Cieślak, Bartosz
Kalinowski, Piotr
Gierej, Piotr
Frączek, Mariusz
Rdzanek, Łukasz
Stankiewicz, Rafał
Kobryń, Konrad
Nazarewski, Łukasz
Leonowicz, Dorota
Urban-Lechowicz, Magdalena
Skwarek, Anna
Giercuszkiewicz, Dorota
Paczkowska, Agata
Piwowarska, Jolanta
Gelo, Remigiusz
Andruszkiewicz, Paweł
Brudkowska, Anna
Andrzejewska, Renata
Niewiński, Grzegorz
Kilińska, Beata
Zarzycka, Aleksandra
Nowak, Robert
Kosiński, Cezary
Korta, Teresa
Ołdakowska-Jedynak, Urszula
Sańko-Resmer, Joanna
Foroncewicz, Bartosz
Ziółkowski, Jacek
Mucha, Krzysztof
Senatorski, Grzegorz
Pączek, Leszek
Habior, Andrzej
Lechowicz, Robert
Polański, Sławomir
Leowska, Elżbieta
Pacho, Ryszard
Andrzejewska, Małgorzata
Rowiński, Olgierd
Kozieł, Sławomir
Żurakowski, Jerzy
Ziarkiewicz-Wróblewska, Bogna
Górnicka, Barbara
Hevelke, Piotr
Michałowicz, Bogdan
Karwowski, Andrzej
Szczerbań, Jerzy
Powiązania:
https://bibliotekanauki.pl/articles/1396689.pdf
Data publikacji:
2012-06-01
Wydawca:
Index Copernicus International
Tematy:
liver transplantation
indications
results
mortality
Opis:
The aim of the study was to analyze indications and results of the first one thousand liver transplantations at Chair and Clinic of General, Transplantation and Liver Surgery, Medical University of Warsaw.Material and methods. Data from 1000 transplantations (944 patients) performed at Chair and Clinic of General, Transplantation and Liver Surgery between 1994 and 2011 were analyzed retrospectively. These included 943 first transplantations and 55 retransplantations and 2 re-retransplantations. Frequency of particular indications for first transplantation and retransplantations was established. Perioperative mortality was defined as death within 30 days after the transplantation. Kaplan-Meier survival analysis was used to estimate 5-year patient and graft survival.Results. The most common indications for first transplantation included: liver failure caused by hepatitis C infection (27.8%) and hepatitis B infection (18%) and alcoholic liver disease (17.7%). Early (< 6 months) and late (> 6 months) retransplantations were dominated by hepatic artery thrombosis (54.3%) and recurrence of the underlying disease (45%). Perioperative mortality rate was 8.9% for first transplantations and 34.5% for retransplantations. Five-year patient and graft survival rate was 74.3% and 71%, respectively, after first transplantations and 54.7% and 52.9%, respectively, after retransplantations.Conclusions. Development of liver transplantation program provided more than 1000 transplantations and excellent long-term results. Liver failure caused by hepatitis C and B infections remains the most common cause of liver transplantation and structure of other indications is consistent with European data.
Źródło:
Polish Journal of Surgery; 2012, 84, 6; 304-312
0032-373X
2299-2847
Pojawia się w:
Polish Journal of Surgery
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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