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Wyszukujesz frazę "Sojak, M." wg kryterium: Autor


Wyświetlanie 1-5 z 5
Tytuł:
Wi-Fi networks in small and medium-sized businesses (SMB)
Autorzy:
Sojak, M.
Głowacki, S.
Powiązania:
https://bibliotekanauki.pl/articles/93013.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Przyrodniczo-Humanistyczny w Siedlcach
Tematy:
Wi-Fi
wireless network
small business
medium business
IEEE 802.11
IEEE 802.15
IEEE 802.16 standard
WLAN
wireless local area network
Opis:
Wi-Fi is quite a new technology on the market. This paper’s aim was to prove the justifiability and profitability of this technology use in the small and medium-sized businesses sector. Advantages and disadvantages of this kind of network were also shown. An issue connected with data and configuration elements security was also raised. Other wireless technologies were also presented.
Źródło:
Studia Informatica : systems and information technology; 2009, 1(12); 55-65
1731-2264
Pojawia się w:
Studia Informatica : systems and information technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of drying and long-term storage on colour and carotenoids content of giant pumpkin (Cucurbita maxima)
Autorzy:
Sojak, M.
Jaros, M.
Janaszek-Mańkowska, M.
Trajer, J.
Głowacki, S.
Ratajski, A.
Powiązania:
https://bibliotekanauki.pl/articles/297957.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
chemical composition
clustering
colour
drying
factor analysis
pumpkin
Opis:
The objective of this study was to characterise the quality of giant pumpkin dried in different conditions as well as to determine the best combination(s) of drying conditions, based on colour and chemical composition of dried material. Samples of three pumpkin cultivars (Amazonka, Justynka- 957 and Ambar) were dried at five different temperatures (40°C, 50°C, 60°C, 70°C, 80°C) using three different drying methods (forced convection in tunnel dryer, natural convection in chamber dryer and hybrid drying which combined a tunnel drying and fluidized-bed drying). It has been shown that variability of samples resulted primarily from the redness, yellowness, lutein and β-carotene. Samples were scored based on the range of responses identified by factor analysis in order to find an optimal combination of cultivar, temperature and drying method. The three subsequent highest scores were obtained for samples of Ambar cultivar, dried using hybrid drying at 40, 60 and 80°C respectively.
Źródło:
Technical Sciences / University of Warmia and Mazury in Olsztyn; 2016, 19(4); 295-312
1505-4675
2083-4527
Pojawia się w:
Technical Sciences / University of Warmia and Mazury in Olsztyn
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of the Initial Microstructure on Defect Evolution in Neutron Irradiated Fe-Cr-C Alloys
Autorzy:
Brodziansky, T.
Slugeň, V.
Sojak, S.
Petriska, M.
Konstantinović, M.
Powiązania:
https://bibliotekanauki.pl/articles/1033939.pdf
Data publikacji:
2017-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
78.70.Bj
28.90.+i
Opis:
The irradiation-induced evolution of vacancy type defects in various iron-chromium model alloys and high chromium ferritic/martensitic steels have been studied using coincidence Doppler broadening spectroscopy. Specimens were neutron irradiated to 0.11 dpa at two different temperatures, 290°C and 450°C. It has been found that the microstructure (ferrite vs. ferrite/martensite), more precisely distribution of dissolved carbon within the matrix, is one of the key factor that affect response of the materials to neutron irradiation. Presence of dissolved carbon within the matrix leads to formation of stable and immobile carbon-vacancy complexes which act as traps for irradiation induced vacancies and therefore, leading to increased formation of vacancy clusters. Impact of carbon-vacancy complexes on defects evolution during neutron irradiation is relevant only for certain irradiation temperatures.
Źródło:
Acta Physica Polonica A; 2017, 132, 5; 1590-1592
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of Oxide-Dispersion-Strengthened Ferritic Steels after Ion Implantation
Autorzy:
Simeg Veternikova, J.
Korhonen, E.
Skarba, M.
Degmova, J.
Sabelova, V.
Sojak, S.
Slugen, V.
Powiązania:
https://bibliotekanauki.pl/articles/1336688.pdf
Data publikacji:
2014-03
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.72.-y
68.55.Ln
61.72.J-
Opis:
This paper is focused on four different commercial oxide-dispersion-strengthened ferritic steels (MA 956, ODM 751, MA 957 and ODS Eurofer) with different chromium content and the change of their microstructure after helium ion implantation. The samples were implanted with kinetic energy of ions up to 500 keV and the implantation depth was up to 1.2 μm. The implantation was performed at Institute of Nuclear and Physical Engineering, Slovak University of Technology in Bratislava. The samples were observed prior and after the implantation by positron Doppler broadening spectroscopy with slow positron beam (energy up to 36 keV) which is one of the most suitable techniques due to its sensitivity to surface and subsurface layers up to 1.6 μm. The results showed visible change of defect presence in all samples and defect depth profiles are in a good accordance with SRIM software calculations displaying the Bragg peak. According to measured data, ODS Eurofer (9% Cr) seems to be the most radiation resistant from the group of all investigated steels and MA 956 (20% Cr) as the most radiation affected steel.
Źródło:
Acta Physica Polonica A; 2014, 125, 3; 741-743
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
German and Russian Irradiated Reactor Pressure Vessel Steels from PAS Point of View
Autorzy:
Slugeň, V.
Hein, H.
Sojak, S.
Pecko, S.
Šimeg Veterníková, J.
Petriska, M.
Sabelová, V.
Bartošová, I.
Stacho, M.
Powiązania:
https://bibliotekanauki.pl/articles/1196095.pdf
Data publikacji:
2014-03
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
28.41.Qb
61.72.-y
78.70.Bj
Opis:
This paper presents a comparison of commercially used German and Russian reactor pressure vessel steels from the positron annihilation spectroscopy point of view, having in mind knowledge obtained also from other techniques from the last decades. The second generation of Russian reactor pressure vessel steels seems to be fully comparable with German steels and their quality allows prolongation of NPP operating lifetime over projected 40 years. The embrittlement of CrMoV steels is very low due to the dynamic recovery of radiation-induced defects at reactor operating temperatures. Positron annihilation spectroscopy techniques can be effectively applied for evaluation of microstructural changes caused by extreme external loads by proton implantation, with aim to simulate irradiation and for the evaluation of the effectiveness of post-irradiation thermal treatments. We used our actual and previous results, collected during last 20 years from measurements of different reactor pressure vessel steels in "as received", irradiated and post-irradiation annealed state and compare them with the aim to contribute to general knowledge based on experimental positron annihilation spectroscopy data.
Źródło:
Acta Physica Polonica A; 2014, 125, 3; 726-728
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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