Zobrazeno 1 - 10
of 361
pro vyhledávání: '"Stępień E"'
Publikováno v:
Archives of Foundry Engineering, Vol 17, Iss 4, Pp 195-199 (2017)
The modified surface layers of Mg enriched with Al and Si were fabricated by thermochemical treatment. The substrate material in contact with an Al + 20 wt.% Si powder mixture was heated to 445°C for 40 or 60 min. The microstructure of the layers wa
Externí odkaz:
https://doaj.org/article/539401d1add740c3922651e6ebd1a990
Autor:
Sharma, S., Povolo, L., Mariazzi, S., Korcyl, G., Kacprzak, K., Kumar, D., Niedzwiecki, S., Baran, J., Beyene, E., Brusa, R. S., Caravita, R., Chug, N., Coussat, A., Curceanu, C., Czerwinski, E., Dadgar, M., Das, M., Dulski, K., Eliyan, K., Gajos, A., Gupta, N., Hiesmayr, B. C., Kaplon, L., Kaplanoglu, T., Klimaszewski, K., Konieczka, P., Kozik, T., Kozani, M. K., Krzemien, W., Moyo, S., Mryka, W., Penasa, L., Parzych, S., Del Rio, E. Perez., Raczynski, L., Shivani, Shopa, R. Y, Skurzok, M., Stepien, E. L., Tanty, P., Tayefi, F., Tayefi, K., Wislicki, W., Moskal, P.
Studies based on imaging the annihilation of the electron (e$^{-}$) and its antiparticle positron (e$^{+}$) open up several interesting applications in nuclear medicine and fundamental research. The annihilation process involves both the direct conve
Externí odkaz:
http://arxiv.org/abs/2309.07171
Autor:
Shopa, R. Y., Baran, J., Klimaszewski, K., Krzemień, W., Raczyński, L., Wiślicki, W., Brzeziński, K., Chug, N., Coussat, A., Curceanu, C., Czerwiński, E., Dadgar, M., Dulski, K., Gajewski, J., Gajos, A., Hiesmayr, B. C., Valsan, E. Kavya, Korcyl, G., Kozik, T., Kumar, D., Kapłon, Ł., Moskal, G., Niedźwiecki, S., Panek, D., Parzych, S., del Rio, E. Pérez, Ruciński, A., Sharma, S., Shivani, Silarski, M., Skurzok, M., Stȩpień, E., Ardebili, F. Tayefi, Ardebili, K. Tayefi, Moskal, P.
Publikováno v:
IEEE Transactions on Radiation and Plasma Medical Sciences 7(5) (2023) 509-520
We report a study of the original image reconstruction algorithm based on the time-of-flight maximum likelihood expectation maximisation (TOF MLEM), developed for the total-body (TB) Jagiellonian PET (J-PET) scanners. The method is applicable to gene
Externí odkaz:
http://arxiv.org/abs/2302.02967
Autor:
Sharma, S., Baran, J., Brusa, R. S., Caravita, R., Chug, N., Coussat, A., Curceanu, C., Czerwinski, E., Dadgar, M., Dulski, K., Eliyan, K., Gajos, A., Hiesmayr, B. C., Kacprzak, K., Kaplon, L., Klimaszewski, K., Konieczka, P., Korcyl, G., Kozik, T., Krzemien, W., Kumar, D., Mariazzi, S., Niedzwiecki, S., Panasa, L., Parzych, S., Povolo, L., del Rio, E. Perez, Raczynski, L., Shivani, Shopa, R. Y., Skurzok, M., Stepien, E. L., Tayefi, F., Tayefi, K., Wislicki, W., Moskal, P.
The J-PET detector, which consists of inexpensive plastic scintillators, has demonstrated its potential in the study of fundamental physics. In recent years, a prototype with 192 plastic scintillators arranged in 3 layers has been optimized for the s
Externí odkaz:
http://arxiv.org/abs/2301.02832
Autor:
Pakulnicka J., Buczyński P., Dąbkowski P., Buczyńska E., Stępień E., Stryjecki R., Szlauer-Łukaszewska A., Zawal A.
Publikováno v:
Knowledge and Management of Aquatic Ecosystems, Vol 0, Iss 417, p 29 (2016)
We identified the beetle fauna of springs of a small lowland river and attempted to determine the direction and magnitude of beetle migration between the springs and neighboring water bodies in the river valley, as well as the local environmental fac
Externí odkaz:
https://doaj.org/article/1edc2397ebef43719a841a67a72ee83e
Autor:
Shopa, R. Y., Klimaszewski, K., Kopka, P., Kowalski, P., Krzemień, W., Raczyński, L., Wiślicki, W., Chug, N., Curceanu, C., Czerwiński, E., Dadgar, M., Dulski, K., Gajos, A., Hiesmayr, B. C., Kacprzak, K., Kapłon, Ł., Kisielewska, D., Korcyl, G., Krawczyk, N., Kubicz, E., Niedźwiecki, Sz., Raj, J., Sharma, S., Shivani, Stȩpień, E. L., Tayefi, F., Moskal, P.
We perform a parametric study of the newly developed time-of-flight (TOF) image reconstruction algorithm, proposed for the real-time imaging in total-body Jagiellonian PET (J-PET) scanners. The asymmetric 3D filtering kernel is applied at each most l
Externí odkaz:
http://arxiv.org/abs/2107.12750
Autor:
Moskal, P., Bednarski, T., Niedzwiecki, Sz., Silarski, M., Czerwinski, E., Kozik, T., Chhokar, J., Bała, M., Curceanu, C., Del Grande, R., Dadgar, M., Dulski, K., Gajos, A., Gorgol, M., Gupta-Sharma, N., Hiesmayr, B. C., Jasinska, B., Kacprzak, K., Kaplon, L., Karimi, H., Kisielewska, D., Klimaszewski, K., Korcyl, G., Kowalski, P., Krawczyk, N., Krzemien, W., Kubicz, E., Mohammed, M., Palka, M., Pawlik-Niedzwiecka, M., Raczynski, L., Raj, J., Sharma, S., Shivani, Shopa, R. Y., Skurzok, M., Stepien, E., Wislicki, W., Zgardzinska, B.
Research conducted in the framework of the J-PET project aims to develop a cost-effective total-body positron emission tomography scanner. As a first step on the way to construct a full-scale J-PET tomograph from long strips of plastic scintillators,
Externí odkaz:
http://arxiv.org/abs/2008.10868
Autor:
Dulski, K., Bass, S. D., Chhokar, J., Chug, N., Curceanu, C., Czerwiński, E., Dadgar, M., Gajewski, J., Gajos, A., Gorgol, M., Del Grande, R., Hiesmayr, B. C., Jasińska, B., Kacprzak, K., Kapłon, Ł., Karimi, H., Kisielewska, D., Klimaszewski, K., Kopka, P., Korcyl, G., Kowalski, P., Kozik, T., Krawczyk, N., Krzemień, W., Kubicz, E., Małczak, P., Mohammed, M., Niedźwiecki, Sz., Pałka, M., Pawlik-Niedźwiecka, M., Pędziwiatr, M., Raczyński7, L., Raj, J., Ruciński4, A., Sharma, S., Shivani, Shopa, R. Y., Silarski, M., Skurzok, M., Stępień, E. Ł., Tayefi, F., Wiślicki, W., Zgardzińska, B., Moskal, P.
The J-PET tomograph is constructed from plastic scintillator strips arranged axially in concentric cylindrical layers. It enables investigations of positronium decays by measurement of the time, position, polarization and energy deposited by photons
Externí odkaz:
http://arxiv.org/abs/2006.07467
Autor:
Sharma, S., Chhokar, J., Curceanu, C., Czerwinski, E., Dadgar, M., Dulski, K., Gajewski, J., Gajos, A., Gorgol, M., Gupta-Sharma, N., Del Grande, R., Hiesmayr, B. C., Jasinska, B., Kacprzak, K., Kaplon, L., Karimi, H., Kisielewska, D., Klimaszewski, K., Korcyl, G., Kowalski, P., Kozik, T., Krawczyk, N., Krzemien, W., Kubicz, E., Mohammed, M., Niedzwiecki, Sz., Palka, M., Pawlik-Niedzwiecka, M., Raczynski, L., Raj, J., Rucinski, A., Shivani, Shopa, R. Y., Silarski, M., Skurzok, M., Stepien, E. L., Wislicki, W., Zgardzinska, B., Moskal, P.
Time-Over-Threshold (TOT) technique is being used widely due to its implications in developing the multi channel readouts mainly when fast signal processing is required. Using TOT technique as a measure of energy loss instead of charge integration me
Externí odkaz:
http://arxiv.org/abs/1911.12059
Autor:
Moskal, P., Kisielewska, D., Bura, Z., Chhokar, C., Curceanu, C., Czerwiński, E., Dulski, K., Gajewski, J., Gajos, A., Gorgol, M., Del Grande, R., Hiesmayr, B. C., Jasińska, B., Kacprzak, K., Kamińska, A., Kapłon, Ł., Karimi, H., Korcyl, G., Kowalski, P., Krawczyk, N., Krzemień, W., Kozik, T., Kubicz, E., Małczak, P., Mohammed, M., Niedźwiecki, Sz., Pałka, M., Pawlik-Niedźwiecka, M., Pędziwiatr, M., Raczyński, L., Raj, J., Ruciński, A., Sharma, S., Shivani, Shopa, R. Y., Silarski, M., Skurzok, M., Stępień, E. Ł., Vandenberghe, S., Wiślicki, W., Zgardzińska, B.
In living organisms the positron-electron annihilation (occurring during the PET imaging) proceeds in about 30% via creation of a metastable ortho-positronium atom. In the tissue, due to the pick-off and conversion processes, over 98% of ortho-positr
Externí odkaz:
http://arxiv.org/abs/1911.06841