Wszystkie pola: Kulikowski, Krzysztof - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Methods for improving the dynamic properties of the air braking systems of low-speed agricultural trailers
Autorzy:: Kulikowski, Krzysztof
Kamiński, Zbigniew
Powiązania:: https://bibliotekanauki.pl/articles/263407.pdf
Data publikacji:: 2019
Wydawca:: Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji
Tematy:: air braking systems dynamic
agricultural trailer
braking system optimization
air brake valve
Opis:: Too low an operating speed of trailer air braking systems may lead to an inhibition of the braking asynchrony of agricultural tractor trailer units. Improved braking dynamics advanced braking systems with an electronic control unit (e.g. Trailer EBS) provide a more rational solution for high speed agricultural vehicles. In this paper, an overview of other methods for developing the dynamic properties of air braking systems for agricultural trailers is described. This paper provides an examples of braking system design parameters optimization, using a variety of accelerating valves and dynamic properties correcting devises, also as well, by using simple systems with an electronic controllers. The described methods of dynamic properties improvements can be used to improve the speed and operation synchrony of the air braking systems of low-speed agricultural trailers. The paper presents the influence of some of the described methods, with different levels of complexity, on the properties of typical air braking systems.
Źródło:: Archiwum Motoryzacji; 2019, 84, 2; 5-22
1234-754X
2084-476X
Pojawia się w:: Archiwum Motoryzacji
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Mechanical Behavior of Nitrocarburised Austenitic Steel Coated with N-DLC by Means of DC and Pulsed Glow Discharge
Autorzy:: Borowski, Tomasz
Kulikowski, Krzysztof
Spychalski, Maciej
Rożniatowski, Krzysztof
Rajchel, B.
Adamczyk-Cieślak, Bogusława
Wierzchoń, Tadeusz
Powiązania:: https://bibliotekanauki.pl/articles/2048867.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: DLC
nitrocarburizing
surface engineering
hardness
adhesion
wear
Opis:: AISI 316L steel was subjected to nitrocarburizing under glow discharge conditions, which was followed by DLC (diamond-like carbon) coatings deposition using the same device. The coatings were applied under conditions of direct current and pulsed glow discharge. In order to determine the influence of the produced nitrocarbon austenite layer and the type of discharge on the microstructure and mechanical properties of the coatings, the following features were analysed: surface roughness, coating thickness, structure, chemical composition, adhesion and resistance to frictional wear. For comparison purposes, DLC coatings were also deposited on steel without a nitrocarburised layer. The obtained results indicate a significant influence of the type of glow discharge on the roughness, hardness, nitrogen content and of the nitrocarburised layer on the resistance to wear by friction and adhesion of the produced coatings.
Źródło:: Archives of Metallurgy and Materials; 2022, 67, 1; 317-324
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Synthesis and anti-HIV properties of novel 6-phenylselenenyl-5-propyluracils
Autorzy:: Miazga, Agnieszka
Felczak, Krzysztof
Siwecka, Maria
Lipniacki, Andrzej
Piasek, Andrzej
Kulikowski, Tadeusz
Powiązania:: https://bibliotekanauki.pl/articles/1040887.pdf
Data publikacji:: 2007
Wydawca:: Polskie Towarzystwo Biochemiczne
Tematy:: HIV reverse transcriptase
HIV-1
inhibitors
Opis:: Novel 6-phenylselenenyl-5-propyluracils were synthesized from 5-propyluracil with the use of regioselective synthesis to give 1-[(2-hydroxyethoxy)-methyl]-6-phenylselenenyl-5-propyluracil (6), 1-ethoxymethyl-6-phenylselenenyl-5-propyluracil (9) and 1-benzyloxymethyl-6-phenylselenenyl-5-propyluracil (10). Interaction of these compounds with recombinant HIV-1 reverse transcriptase (RT) was evaluated using a non-isotopic colorimetric method. Compounds 9 and 10 exerted potent HIV RT inhibition (IC50 0.06 and 0.05 µM respectively) while compound 6 showed moderate inhibition (IC50 = 3.5 µM). Potent anti-HIV-1 activity in MT-2 cells inoculated by a syncythia-inducing HIV-1 (cat #3 strain) laboratory isolate was exerted by compounds 9 and 10 (EC50 0.62 µM and 0.025 µM, respectively), while compound 6 showed only moderate activity (IC50 = 4.1 µM). In addition, compound 10 showed very good in vitro therapeutic index (TI > 2046), indicating that it is a potential anti-HIV/AIDS drug.
Źródło:: Acta Biochimica Polonica; 2007, 54, 4; 863-868
0001-527X
Pojawia się w:: Acta Biochimica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Acyclic analogues of 5-fluoro-dUMP and 5-fluoro-2-deoxyuridine: Synthesis and inhibition of thymidylate synthase and tumour cell growth
Autorzy:: Felczak, Krzysztof
Gołos, Barbara
Dzik, Jolanta
Rode, Wojciech
Bretner, Maria
Shugar, David
Kulikowski, Tadeusz
Powiązania:: https://bibliotekanauki.pl/articles/1044855.pdf
Data publikacji:: 1998
Wydawca:: Polskie Towarzystwo Biochemiczne
Źródło:: Acta Biochimica Polonica; 1998, 45, 1; 75-82
0001-527X
Pojawia się w:: Acta Biochimica Polonica
Dostawca treści:: Biblioteka Nauki

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