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Wyświetlanie 1-15 z 17
Tytuł:
Age-related changes in mRNA expression of selected surface receptors in lymphocytes of dairy calves
Autorzy:
Flaga, J.
Korytkowski, Ł.
Górka, P.
Kowalski, Z.M.
Powiązania:
https://bibliotekanauki.pl/articles/2087753.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
immune system development
clusters of differentiation
marker
lymphocyte maturation
Źródło:
Polish Journal of Veterinary Sciences; 2018, 21, 1; 213-216
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Insulin-like growth factors 1 and 2 (IGF-1 and IGF-2) mRNA levels in relation to the gastrointestinal tract (GIT)development in newborn calves
Autorzy:
Flaga, J.
Gorka, P.
Kowalski, Z.M.
Kaczor, U.
Pietrzak, P.
Zabielski, R.
Powiązania:
https://bibliotekanauki.pl/articles/31097.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
The study was aimed at determining the age-depended changes in insulin-like growth factors 1 and 2 (IGF-1 and IGF-2) mRNA levels in relation to the gastrointestinal tract (GIT) development in newborn calves. Twenty four male calves (5-day-old) were randomly allocated to 4 groups which were slaughtered at day 5, 12, 19 and 26 of their life, respectively. Tissue samples from the rumen, abomasum, duodenum, jejunum and liver were taken for analysis, and the level of IGF-1 and IGF-2 mRNA was determined using RT semi-quantitative PCR method. Both IGF-1 and IGF-2 mRNA level was the biggest on 5 day of life, significantly decreased up to day 12-19 in most of analyzed GIT parts, and started to increase thereafter. In the rumen the reduction in the amount of IGFs transcripts was associated with the reduction in papillae length and tunica muscularis thickness. The abomasum weight and tunica mucosa thickness increased from the 5 day up to 19 day of life, whereas abomasal IGF-1 mRNA level decreased together with calf's age up to 19 day of life, and the level of IGF-2 mRNA did not change. The reduction in IGFs mRNA level after 5 day of life in the duodenum (IGF-1 and IGF-2) and in the jejunum (IGF-1) was associated with reduction in villi length (duodenum and jejunum), and the increase of crypt depth (duodenum).
Źródło:
Polish Journal of Veterinary Sciences; 2011, 14, 4
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reconstruction of stylus tip geometry
Rekonstrukcja kształtu stykowej końcówki pomiarowej
Autorzy:
Górka, S.
Pawlus, P.
Powiązania:
https://bibliotekanauki.pl/articles/156928.pdf
Data publikacji:
2011
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
struktura geometryczna powierzchni
pomiary stykowe
rekonstrukcja kształtu końcówki pomiarowej
surface topography
roughness
stylus measurement
Opis:
Two existing methods of stylus tip geometry reconstruction were studied. Computer generated and measured random surfaces were the objects of the investigations. The benefits of creating connected profiles for tip reconstruction was discussed. The effect of quantisation error on tip reconstruction accuracy was analysed.
Istnieją dwie najczęściej stosowane metody rekonstrukcji kształtu końcówki pomiarowej stosowanej podczas pomiarów stykowych struktury geometrycznej powierzchni. Zasadą pierwszej z nich jest znajdowanie części wspólnej kolejnych wierzchołków. Metoda druga polega na stosowaniu obwiedni dolnej, a następnie górnej mierzonego profilu, przy stale wzrastającym promieniu obwiedni, co prowadzi do określenia promienia końcówki pomiarowej. Metody te były analizowane w niniejszej pracy. Przedmiotem analizy były powierzchnie mierzone oraz generowane komputerowo o zróżnicowanym rozkładzie rzędnych. Zastosowano bezwymiarowe ilościowe i jakościowe wskaźniki dokładności rekonstrukcji. Oryginalną propozycją autorów jest łączenie kolejnych profili ułatwiające szacowanie kształtu końcówki pomiarowej. Przeanalizowano również wpływ błędu kwantyzacji na dokładność rekonstrukcji. Stwierdzono przydatność obu analizowanych metod. Metoda polegająca na estymacji promienia końcówki pomiarowej jest mniej wrażliwa na błędy pomiaru.
Źródło:
Pomiary Automatyka Kontrola; 2011, R. 57, nr 7, 7; 756-759
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Continuous update of business process trees using Continuous Inductive Miner
Autorzy:
Pawlak, Tomasz P.
Górka, Bartosz
Powiązania:
https://bibliotekanauki.pl/articles/2204514.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
business process
process mining
business intelligence
event log
concept drift
proces biznesowy
górnictwo procesowe
wywiad gospodarczy
dziennik zdarzeń
dryf koncepcji
Opis:
Business processes are omnipresent in nowadays economy: companies operate repetitively to achieve their goals, e.g., deliver goods, complete orders. The business process model is the key to understanding, managing, controlling, and verifying the operations of a company. Modeling of business processes may be a legal requirement in some market segments, e.g., financial in the European Union, and a prerequisite for certification, e.g., of the ISO-9001 standard. However, business processes naturally evolve, and continuous model adaptation is essential for rapid spot and reaction to changes in the process. The main contribution of this work is the Continuous Inductive Miner (CIM) algorithm that discovers and continuously adapts the process tree, an established representation of the process model, using the batches of event logs of the business process. CIM joins the exclusive guarantees of its two batch predecessors, the Inductive Miner (IM) and the Inductive Miner – directlyfollows-based (IMd): perfectly fit and sound models, and single-pass event log processing, respectively. CIM offers much shorter computation times in the update scenario than IM and IMd. CIM employs statistical information to work around the need to remember event logs as IM does while ensuring the perfect fit, contrary to IMd.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2023, 71, 1; art. no. e143551
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Oil and gas fields in the Carpathians and the Carpathian Foredeep
Autorzy:
Górka, A.
Gliniak, P.
Madej, K.
Maksym, A.
Powiązania:
https://bibliotekanauki.pl/articles/2066022.pdf
Data publikacji:
2007
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
gas fields
oil fields
Carpathian Foredeep
Carpathians
sub-miocene basement
reserves
activity in the South of Poland
Opis:
Southeastern Poland is one of the oldest petroleum provinces in the world. Although hydrocarbon production has been conducted in this region since the middle of 19th century, there is still a good potential for more discoveries. 9 billion cubic meters of high methane gas reserves reported in the years 2000-2006, when combined with the previously discovered gas fields, essentially satisfy gas demand for this area. Currently, Miocene deposit of the Carpathian Foredeep is the most prolific exploration target area with more than 100 discoveries of high methane gas. The total reserves of these fields are 138 billion cubic meters, and the cumulative production is more than 90 billion cubic meters of natural gas. Large gas fields in terms of area and reserves that have already been discovered are followed by present discoveries of fields with relatively smaller area, their reserves are up to 2 billion cubic meters. Current exploration efforts are focused on good understanding of the sub-miocene basement configuration as well as detecting of seismic anomalies directly related to natural gas accumulations. Another very important element of exploration strategy for Southern Poland is the Mesozoic and Paleozoic deposits of the Carpathian Foredeep. The most prospective for discovering of sizeable hydrocarbon fields are Cretaceous (Cenomanian) sandstones and Upper Jurassic carbonates, locally also Middle Jurassic sandstone as well as Lower Carboniferous and Devonian carbonates. So far 13 gas fields and 10 oil fields have been discovered in the Mesozoic and Paleozoic of the Carpathian Foredeep and the sub-Carpathian basement with booked reserves of 7.5 billion cubic meters of natural gas and 4.7 million tons of oil. The cumulative production amounts to 6.1 billion cubic meters of gas and 4.3 million tons of oil. Different exploration problems have been encountered in the Carpathians. Most of the fields which have been discovered in the Flysch Carpathians occur in shallow, steep, narrow, commonly thrusted and faulted folds. Oil and gas fields discovered so far in the Carpathians have small reserves. Additionally, discovered and booked reserves of existing oil and gas fields are depleted to a large extent. 17 gas fields and 67 oil fields have been discovered in the Carpathians. Booked reserves amount to 16.6 billion cubic meters of natural gas and 12.3 million tons of oil. Cumulative production has been 15.2 billion cubic meters of gas and 11.9 million tons of oil. To sum up, it should be emphasized that the bulk of gas reserves discovered, booked and developed recently in Southern Poland comes from the autochthonous Miocene deposits. This trend, which involves high methane gas, is expected to continue for the next few years. Potential oil discoveries can be attributed mainly to the flysch Carpathians and Paleozoic, but requires more research and further exploration on a larger scale.
Źródło:
Przegląd Geologiczny; 2007, 55, 12/1; 993-998
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of Co and V substitution on structural properties of FINEMET-type alloys
Autorzy:
Szumiata, T.
Gawroński, M.
Brzózka, K.
Górka, B.
Sovák, P.
Pavlík, P.
Powiązania:
https://bibliotekanauki.pl/articles/148217.pdf
Data publikacji:
2007
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
magnetic texture
CEMS
polarized radiation
Opis:
The effect of addition of Co and V on the hyperfine parameters of amorphous as well as nanocrystalline Finemet-type alloys has been studied by means of transmission Mössbauer spectrometry. It was stated that these elements infiltrate into crystalline grains in the course of crystallization, what causes alteration in structure. Different evolution of magnetic hyperfine field is reported in both cases and analyzed. In the series of alloys substituted by vanadium, the substantial paramagnetic component attributed to iron-poor regions in the amorphous remainder was found.
Źródło:
Nukleonika; 2007, 52, supl. 1; 21-28
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Presence of plant hormones in composts made from organic fraction of municipal solid waste
Autorzy:
Klimas, E.
Szymańska-Pulikowska, A.
Górka, B.
Wieczorek, P.
Powiązania:
https://bibliotekanauki.pl/articles/962839.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Opis:
Composting is a process of the biological decomposition of organic matter under aerobic conditions. Composts made from waste may still contain other substances that influence plant growth and development, such as vitamins or plant growth substances (plant hormones). Application of products containing phytohormones has an effect on numerous physiological processes in plants. Among observable results are: improved condition of the root system, increased absorption of nutrients, improved stress and disease resistance and delayed aging. The purpose of the research was to analyse the occurrence of plant hormones in mature composts made from selectively collected organic fraction of household municipal solid waste. Solid waste processing was carried out in a composting plant located at the Municipal Waste Management Plant in Żywiec (Silesian Province, Żywiecki District, Poland). The composting plant uses a Herhor bioreactor. Organic waste constituted 70% of the mixture, with the remaining 30% composed of structural material. Regarding the varying amounts of green waste (mainly grass clippings), the composts were divided into two groups: early spring composts and late spring composts. Four out of the five analysed substances (from the auxin and cytokinin groups) were found in composts made from waste collected in early spring. Composts made from waste collected from May to June contained mostly cytokinins and gibberellic acid. Total concentration of plant hormones in the composts was related to the content of plant waste in processed material.
Źródło:
Journal of Elementology; 2016, 21, 4
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Phase Composition and Magnetic Properties of Nanoperm Thin Films Doped with Yttrium
Autorzy:
Brzózka, K.
Sovák, P.
Szumiata, T.
Górka, B.
Gawroński, M.
Powiązania:
https://bibliotekanauki.pl/articles/1428972.pdf
Data publikacji:
2012-05
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.50.Bb
75.70.-i
76.80.+y
78.20.Ls
Opis:
Thin films of Nanoperm alloys with partial substitution of iron by yttrium are the subject of investigations. The attention is fixed on the influence of yttrium substitution on structure and magnetic characteristics of the samples. The effect of film thickness is also considered. Conversion electron Mössbauer spectroscopy and magneto-optic Kerr effect were used to derive hyperfine parameters and coercive field, respectively. Coexistence of crystalline bcc-Fe phase and an amorphous one with diverse proportion was stated in most of the samples. It was found that surface and interface regions contribute to the magnetic properties of films.
Źródło:
Acta Physica Polonica A; 2012, 121, 5-6; 1270-1272
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microstructural Study of Fe-Si(Ge)-Nb-Cu-B Finemet Alloys
Autorzy:
Michalik, S.
Bednarcik, J.
Brzózka, K.
Sovak, P.
Górka, B.
Powiązania:
https://bibliotekanauki.pl/articles/1534048.pdf
Data publikacji:
2010-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.05.cp
61.05.C-
61.46.Hk
Opis:
Structural changes in Finemet based alloys invoked by germanium replacement for silicon were investigated using the X-ray diffraction, the X-ray absorption spectroscopy and the Mössbauer spectroscopy. Ge substitution preserves a nanostructural character of annealed samples at temperature 550°C; specifically the formation of a $DO_3$-type with about 19 at.% of (Si,Ge) was confirmed. The mean size of nanocrystals was estimated to be about 7 nm.
Źródło:
Acta Physica Polonica A; 2010, 118, 5; 818-819
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mössbauer Study of Magnetic Texture of Finemet-Type Ribbons
Autorzy:
Brzózka, K.
Sovák, P.
Górka, B.
Szumiata, T.
Gawroński, M.
Powiązania:
https://bibliotekanauki.pl/articles/1506573.pdf
Data publikacji:
2011-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
76.80.+y
75.50.Kj
81.40.Ef
Opis:
Magnetic texture of amorphous Finemet-type alloys substituted by Co, Ni, Mn, Ge and V was investigated by means of Mössbauer spectroscopy using various angular configurations. Samples in form of ribbons were manufactured by single-roller melt spinning technique. In most of investigated alloys some preference of alignment of atomic magnetic moments in-plane of sample is stated, except of some alloys substituted by germanium in which slight tendency to out-of plane spin orientation is proved.
Źródło:
Acta Physica Polonica A; 2011, 119, 1; 33-36
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Finemet Thin Films Substituted by Chromium - CEMS and MOKE Study
Autorzy:
Brzózka, K.
Szumiata, T.
Sovák, P.
Górka, B.
Hibner, K.
Balcerski, J.
Powiązania:
https://bibliotekanauki.pl/articles/1533968.pdf
Data publikacji:
2010-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.50.Bb
61.46.Hk
76.80.+y
78.20.Ls
Opis:
Conversion electron Mössbauer spectroscopy and magneto-optical Kerr effect were applied to investigate hyperfine interactions and macroscopic magnetic properties of Finemet-type thin films. Phase analysis as well as compositional evolution of hyperfine parameters and coercivity was performed in the range of chromium percentage 0 ≤ x ≤ 14. Essential differences in structure and hyperfine parameters were found for films of different chromium concentration. Coercivity shows non-monotonic dependence with minimal value at x = 5.
Źródło:
Acta Physica Polonica A; 2010, 118, 5; 794-796
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of Al doping on microstructure and hyperfine interactions in FINEMET
Autorzy:
Brzózka, K.
Szumiata, T.
Gawroński, M.
Górka, B.
Zorkovská, A.
Sovák, P.
Powiązania:
https://bibliotekanauki.pl/articles/147216.pdf
Data publikacji:
2004
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
Mössbauer spectroscopy
FINEMET
nanocrystalline alloys
Al-dopped FINEMET
Opis:
Structure and hyperfine interactions of amorphous and nanocrystalline FINEMET were investigated by means of Mössbauer spectrometry. It was found that substitution of x iron atoms with aluminum ones causes changes in the properties of both amorphous and nanocrystalline alloys as well as in the structure of individual phases. The reduction of hyperfine magnetic field caused by atom substitution is a non-linear function of x, unlike the linear dependence expected because of dilution. Temperature studies reveal a double magnetic phase transition at 250°C and 330°C as well as point to the variety of phases in the examined material.
Źródło:
Nukleonika; 2004, 49,suppl.3; 59-62
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monacha claustralis (Rossmassler, 1834) and Monacha cartusiana (O. F. Muller, 1774) in Poland
Autorzy:
Pienkowska, J.R.
Gorka, M.
Matuszak, M.
Bocianowski, P.
Gwardjan, M.
Lesicki, A.
Powiązania:
https://bibliotekanauki.pl/articles/83516.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
Tematy:
Monacha claustralis
Monacha cartusiana
invasive species
shell morphology
locality
Polska
Źródło:
Folia Malacologica; 2016, 24, 1
1506-7629
Pojawia się w:
Folia Malacologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New data on the distribution and molecular diagnostics of Monacha claustralis (Rossmässler, 1834) and M. cartusiana (O. F. Müller, 1774) (Gastropoda: Eupulmonata: Hygromiidae) in Poland, Bosnia and Serbia
Autorzy:
Pienkowska, J.R.
Gorka, M.
Matuszak, M.
Bocianowski, P.
Gwardjan, M.
Lesicki, A.
Powiązania:
https://bibliotekanauki.pl/articles/84443.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
Źródło:
Folia Malacologica; 2016, 24, 4
1506-7629
Pojawia się w:
Folia Malacologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Local Structure and Magnetic Characteristics of FINEMET Alloys Substituted by Vanadium
Autorzy:
Brzózka, K.
Szumiata, T.
Gawroński, M.
Górka, B.
Sovák, P.
Pavlík, G.
Kolesár, V.
Powiązania:
https://bibliotekanauki.pl/articles/1813522.pdf
Data publikacji:
2008-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.50.-y
76.80.+y
Opis:
Amorphous and nanocrystalline FINEMET-type alloys with vanadium addition up to 7 at% were investigated by the MÖssbauer spectroscopy and magnetic methods. The outcomes evidence alterations in grain structure, although the main effect is related to the changes in intergranular phase. This induces diminution of mean hyperfine field, saturation induction and Curie temperature as well as the increase in coercivity.
Źródło:
Acta Physica Polonica A; 2008, 113, 1; 51-54
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
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