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1
Content available Low pressure carburizing in a large-chamber device for high-performance and precision thermal treatment of parts of mechanical gear
Wołowiec-Korecka E., Korecki M., Klimek L., Kula P., Brewka A., Buczek M.
Advances in Science and Technology. Research Journal
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2017
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Vol. 11, no 1
253--258
EN
This paper presents the findings of research of a short-pulse low pressure carburizing technology developed for a new large-chamber furnace for high-performance and precision thermal treatment of parts of mechanical gear. Sections of the article discuss the novel constructions of the device in which parts being carburized flow in a stream, as well as the low-pressure carburizing experiment. The method has been found to yield uniform, even and repeatable carburized layers on typical gear used in automotive industry.
2
Content available Attacks on StreamHash 2
Buczek M.
Annales Universitatis Mariae Curie-Skłodowska. Sectio AI, Informatica
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2012
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Vol. 12, no. 3
25--35
EN
StreamHash 2 is a hash function proposed by Michał Trojnara at the Cryptography and Security Systems in 2011 Conference. This algorithm is a member of StreamHash family which was first introduced in 2008 during the SHA-3 Competition. In this paper we will show collision attacks on the internal state of the StreamHash 2 hash function with complexity about 2^8n for the 32n-bit version of the algorithm and its reduced version with complexity 2^8n. We will also show its application to attacking the full StreamHash 2 function (finding a collision on all output bits) with complexity about 2^88 . We will try to show that any changes made to the construction (for instance the ones proposed for StreamHash 3) will have no effect on the security of the family due to critical fault build into the compression function.
3
Content available remote Wpływ zawartości fluoru na właściwości powłok osadzanych w wyładowaniu barierowym pod ciśnieniem atmosferycznym
Rżanek-Boroch Z., Buczek M., Ilik A., Kosiński A.
Przemysł Chemiczny
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2010
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T. 89, nr 9
1209-1211
4
Content available remote Properties of Surface Layers of Titanium Alloy TI6AL4V After Laser Melting Processes
Ossowska A., Zieliński A., Buczek M.
Advances in Materials Science
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2010
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Vol. 10, nr 4(26)
63-68
EN
The article presents the investigation results of titanium alloy Ti6Al4V surface layer after laser melting process. The process of laser melting was performed using Nd-YAG laser. The evaluation of structure of the alloy as well as hardness and chemical composition was performed. It was shown that laser melting changes the structure and properties of titanium alloy Ti6Al4V and process parameters as scanning speed affects the thickness of zones in top layer of the material. Due to the laser melting process more wear resistive surface can be obtained that increases the wear and corrosion resistance of orthopeadic prosthesis.
5
Content available remote Platforma paliw – przykład współpracy w zwalczaniu przestępczości
Bronicki M., Buczek M., Kępa W.
Biuletyn Urzędu Regulacji Energetyki
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2007
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nr 6
4-10
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