Temat: sources - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: An approach to the preparation of iodine-125 seed-type sources
Autorzy:: Cieszykowska, I.
Piasecki, A.
Mielcarski, M.
Tematy:: iodine-125 sealed sources
seed-type sources
brachytherapy sources; Pokaż więcej
Wydawca:: Instytut Chemii i Techniki Jądrowej
Powiązania:: https://bibliotekanauki.pl/articles/148791.pdf Link otwiera się w nowym oknie
Opis:: The deposition of iodine-125 on silver bars to be sealed in titanium capsules as seed-type sources for brachytherapy was studied. For this purpose, a method of internal electrolysis was applied. The cell consisted of a silver anode contained in a Pt crucible serving as cathode. The plating solution contained sodium iodide-125 and sodium hydroxide. The yield of iodine-125 deposition for carrier-containing and carrier-free electrolyte solutions was determined. The deposition on uncutted Ag wires and on those cutted into 3 mm long bars was investigated. The influence of visible light on the coating process was examined. The leachability of iodine-125 from the silver wires as well as the activity distribution on the wires was measured. The obtained results indicate that the silver wire should be first coated with iodine-125 and then cutted into 3 mm long pieces. Based on this observation, a device for a batch-type procedure of manufacturing I-125 plated silver bars was designed and made. A design for simultaneous cutting and positioning of the activity-carrying bars into the titanium capsules is presented. This arrangement has been built and tested in trials. The tests confirmed that contamination of the source capsules can be minimized. Laser weldings of the titanium capsules were performed and the cross section of the welds examined by the use of an optical microscope.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 2.

Tytuł:: Cosmological evolution of extragalactic radio sources of different morphological types
Autorzy:: Jamrozy, Marek
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

Artykuł

na półce

Skocz do pozycji: 3.

Tytuł:: New giant radio sources
Autorzy:: Zoła, Stanisław
Jamrozy, Marek
Machalski, Jerzy
Opis:: Giant radio sources (GRSs) are extremely valuable for better understanding the last stages of evolution of radio sources and their host galaxies, constraining the analytical models of their time evolution, verifying orientation-dependent unified schemes, etc. On the basis of the population statistics, derived from the existing evolutionary models, we have realized a deep deficit of low-luminosity GRSs observed at redshifts < 0.3–0–4 (Machalski and Jamrozy, 2000). In order to determine the cause of this deficit and find the missing giants, we have selected a sample of faint FRII-type GRS candidates, using the VLA 1.4 GHz sky surveys: NVSS (Condon et al., 1998) and FIRST (Becker et al., 1995). The first results of a search for the radio cores of our candidates with deep VLA observations at 4.9 GHz and 8.4 GHz, and the follow-up spectroscopic observations of identified optical counterparts is presented.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

Artykuł

na półce

Skocz do pozycji: 4.

Tytuł:: O nowym wydaniu Rocznika Świętokrzyskiego
Kwartalnik Historyczny R. 106 nr 2 (1999)
Autorzy:: Drelicharz, Wojciech (1965– )
Współwytwórcy:: Instytut Historii Polskiej Akademii Nauk
Institute of History of the Polish Academy of Sciences
Wydawca:: Wydawnictwo Naukowe "Semper"
Powiązania:: Kwartalnik Historyczny
Opis:: Tytuł pracy recenzowanej : Monumenta Poloniae Historica, nova series, 1.12, wyd. Anna Rutkowska-Plachcińska, Kraków 1996 [druk:] 1997
p. 57-72
Reviewed book : Monumenta Poloniae Historica, nova series, 1.12, ed. Anna Rutkowska-Plachcińska, Kraków 1996 [printed:] 1997
s. 57-72
Dostawca treści:: RCIN - Repozytorium Cyfrowe Instytutów Naukowych

Książka

na półce

Skocz do pozycji: 5.

Tytuł:: Studies on the production of glucose isomerase by Bacillus licheniformis
Autorzy:: Nwokoro, O.
Tematy:: glucose isomerase
carbon sources
nitrogen sources
metal ions; Pokaż więcej
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Powiązania:: https://bibliotekanauki.pl/articles/778827.pdf Link otwiera się w nowym oknie
Opis:: This work reports the effects of some culture conditions on the production of glucose isomerase by Bacillus licheniformis. The bacterium was selected based on the release of 3.62 mg/mL fructose from the fermentation of glucose. Enzyme was produced using a variety of carbon substrates but the highest enzyme activity was detected in a medium containing 0.5% xylose and 1% glycerol (specific activity = 6.88 U/mg protein). Media containing only xylose or glucose gave lower enzyme productivies (specific activities= 4.60 and 2.35 U/mg protein respectively). The effects of nitrogen substrates on glucose isomerase production showed that yeast extract supported maximum enzyme activity (specific activity = 5.24 U/mg protein). Lowest enzyme activity was observed with sodium trioxonitrate (specific activity = 2.44 U/mg protein). In general, organic nitrogen substrates supported higher enzyme productivity than inorganic nitrogen substrates. Best enzyme activity was observed in the presence of Mg2+ (specific activity = 6.85 U/mg protein) while Hg2+ was inhibitory (specific activity = 1.02 U/mg protein). The optimum pH for best enzyme activity was 6.0 while optimum temperature for enzyme production was 50oC.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 6.

Tytuł:: A search using GEO600 for gravitational waves coincident with fast radio bursts from SGR 1935+2154
Autorzy:: Kubisz, Jerzy
Współwytwórcy:: Współautorami artykułu są członkowie LIGO Scientific Collaboration, Virgo Collaboration i KAGRA Collaboration w liczbie 1779
Opis:: The magnetar SGR 1935+2154 is the only known Galactic source of fast radio bursts (FRBs). FRBs from SGR 1935+2154 were first detected by the Canadian Hydrogen Intensity Mapping Experiment (CHIME)/FRB and the Survey for Transient Astronomical Radio Emission 2 in 2020 April, after the conclusion of the LIGO, Virgo, and KAGRA Collaborations' O3 observing run. Here, we analyze four periods of gravitational wave (GW) data from the GEO600 detector coincident with four periods of FRB activity detected by CHIME/FRB, as well as X-ray glitches and X-ray bursts detected by NICER and NuSTAR close to the time of one of the FRBs. We do not detect any significant GW emission from any of the events. Instead, using a short-duration GW search (for bursts ≤1 s) we derive 50% (90%) upper limits of 10$^{48}$ (10$^{49}$) erg for GWs at 300 Hz and 10$^{49}$ (10$^{50}$) erg at 2 kHz, and constrain the GW-to-radio energy ratio to ≤ 10$^{14}$−10$^{16}$. We also derive upper limits from a long-duration search for bursts with durations between 1 and 10 s. These represent the strictest upper limits on concurrent GW emission from FRBs
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

Artykuł

na półce

Skocz do pozycji: 7.

Tytuł:: ENERGY-SAVING TECHNOLOGIES IN AGRICULTURE OF UKRAINE
Autorzy:: Perederiy, Nataliya
Kuzmenko, Sergii
Labenko, Oleksandr
Tematy:: biomass
biofuel
bioenergy
regenerative energy sources
alternative energy sources
ecologization; Pokaż więcej
Wydawca:: Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Katedra Ekonometrii i Statystyki
Powiązania:: https://bibliotekanauki.pl/articles/453782.pdf Link otwiera się w nowym oknie
Opis:: A well-known fact is that the world supplies of traditional fuel are decreasing and the world energy production from the alternative sources is constantly increasing. Each year the number of countries displaying a keen interest in development and application of regenerative energy is rising. Biomass is a considerable and perspective kind of fuel for Ukraine. Nowadays obtaining energy from biomass (wood, straw, plant remainders of agricultural production, manure, organic particle of hard domestic offcuts) is the field developing quickly and dynamically in many countries of the world. In favour of biomass speaks the fact that it has large power potential and refurbishable character. In our research we considered the use of straw for the receipt of energy and its practical value for a particular enterprise. As well as any type of power resource from biomass, burning of straw has a number of advantages. The advantage is that straw is indeed a regenerative source and is reproduced every year with the new harvest of grain crops. It is accessible for users, especially in rural locality that will allow saving part of facilities on traditional power carriers.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 8.

Tytuł:: People investing in people. The overview on investment methods in technological start-ups at different stages of growth
Autorzy:: Belka, Maria Anna
Tematy:: start-up
founder
technology-based firm
investment sources
financing sources; Pokaż więcej
Wydawca:: Szkoła Główna Handlowa w Warszawie. Kolegium Zarządzania i Finansów
Powiązania:: https://bibliotekanauki.pl/articles/20874783.pdf Link otwiera się w nowym oknie
Opis:: The purpose of this paper is to explore different funding sources for young technology-based companies at different stages of their development, taking into consideration their characteristics. The study uses data from an extensive literature review on the start-up literature and a desk research analysis. The first part of the article focuses on the explanation of the concept of start-up with an emphasis on internal and external risks it can bear for a potential investor. The middle part of the article offers an overview on various division concepts into phases of a start-up. The final part explains characteristics of different kinds of investors in order to match them with specific phases of growth. The author’s findings reveal that the new technology-based firms demonstrate different financing patterns at different stages of development. The article may serve as an interesting overview for start-ups planning their development path as it attempts to reconcile different points of view. However, being based only on existing literature sources, further research is necessary for more profound conclusions.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 9.

Tytuł:: Dzieje Najnowsze : [kwartalnik poświęcony historii XX wieku] R. 9 z. 3 (1977)
Edycja źródeł do dziejów współczesnych : (zarys)
Autorzy:: Morsey, Rudolf (1927– )
Kahlenberg, Friedrich P.
Współwytwórcy:: Torzecki, Ryszard (1925–2003). Tr.
Torzecki, Ryszard (1925–2003). Tł.
Instytut Historii Polskiej Akademii Nauk
Institute of History of the Polish Academy of Sciences
Wydawca:: Zakład Narodowy im. Ossolińskich. Wydawnictwo Polskiej Akademii Nauk
Powiązania:: Dzieje Najnowsze : [kwartalnik poświęcony historii XX wieku]
Opis:: p. 139-149
s. 139-149
Dostawca treści:: RCIN - Repozytorium Cyfrowe Instytutów Naukowych

Książka

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Skocz do pozycji: 10.

Tytuł:: Korespondencja anabaptystów morawskich z arianami polskimi
Odrodzenie i Reformacja w Polsce T. 3 (1958)
Autorzy:: Tazbir, Janusz (1927–2016). Oprac.
Szczucki, Lech (1933–2019). Oprac.
Tazbir, Janusz (1927–2016). Ed.
Szczucki, Lech (1933–2019). Ed.
Współwytwórcy:: Instytut Historii Polskiej Akademii Nauk
Institute of History of the Polish Academy of Sciences
Wydawca:: Państwowe Wydawnictwo Naukowe
Powiązania:: Odrodzenie i Reformacja w Polsce
Opis:: p. 197-215
s. 197-215
Dostawca treści:: RCIN - Repozytorium Cyfrowe Instytutów Naukowych

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