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Wyświetlanie 1-16 z 16
Tytuł:
DC Magnetic Properties of Amorphous Vitrovac Ribbon
Autorzy:
Kollár, P.
Birčáková, Z.
Füzer, J.
Kuźmiński, M.
Powiązania:
https://bibliotekanauki.pl/articles/1031042.pdf
Data publikacji:
2017-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.60.Jk
75.60.Ch
75.60.Ej
Opis:
Soft magnetic amorphous Co-based materials prepared by rapid quenching method in the form of thin ribbon are well-known due to their excellent soft magnetic properties as high permeability, low coercivity, and low magnetic losses in kHz range. The amorphous Co-Fe-B-Si material Vitrovac® 6155 U55 produced by Vacuumschmelze GmbH & Co. KG belongs to this class of materials and was investigated in as-delivered state. The aim of this work was to study DC magnetization process by various experimental methods. We have measured magnetization curve by fluxmeter based hysteresis graph and hysteresis loops by three different fluxmeter based hysteresis graphs, exhibiting significant differences. The first and the second hysteresis graph perform the hysteresis loops measurement by the point-by-point method, either with commutative or with summing steps. The third one is AC hysteresis graph working at very low frequencies down to 7 mHz, performing the continuous method. The explanation of this result is based on the structural after effect influencing the domain wall displacement. We assumed that the domain structure consists of very small number of domain walls responsible for magnetization process, which was confirmed by the visualization of static domain structure by a computer-controlled setup based on the Kerr effect.
Źródło:
Acta Physica Polonica A; 2017, 131, 4; 675-677
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Nanocrystallization Process on the Magnetomechanical Coupling in Fe-Si-B-Cu-Nb Alloy
Autorzy:
Kaczkowski, Z.
Małkiński, L.
Kuźmiński, M.
Müller, M.
Powiązania:
https://bibliotekanauki.pl/articles/1861130.pdf
Data publikacji:
1994-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.80.+q
75.60.Nt
75.60.Ch
Opis:
Magnetic and magnetoelastic properties of the Fe$\text{}_{73.5}$Si$\text{}_{16.5}$B$\text{}_{6}$Cu$\text{}_{1}$Nb$\text{}_{3}$ alloy change considerably during nanocrystallization process. Improvement of magnetic properties is accompanied by the decrease in piezomagnetic parameters such as magnetomechanical coupling and $\Delta E$-effect.
Źródło:
Acta Physica Polonica A; 1994, 85, 1; 201-204
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Gradually Devitrified Co-Based Metallic Glass As a Model Material for Testing Néels Theory of the Rayleigh Rule
Autorzy:
Lachowicz, H. K.
Popławski, F.
Kane, S. N.
Kuźmiński, M.
Kulik, T.
Powiązania:
https://bibliotekanauki.pl/articles/1995188.pdf
Data publikacji:
1999-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.50.Kj
75.60.Ej
Opis:
It is shown in the present paper that gradually devitrified Co-based non-magnetostrictive metallic glass is an excellent model material to verify Louis Néel's theory of the Rayleigh rule. In the course of the calculations, Néel showed that the parameter p=bH$\text{}_{c}$a (where H$\text{}_{c}$ is the coercivity, a and b are the coefficients of a quadratic polynomial expressing the Rayleigh rule) is expected to range between 0.6 (hard magnets) and 1.6 (soft). However, the experimental values of this parameter, reported in the literature for a number of mono- and poly-crystalline magnets, are much greater than those expected from the theory presented by Néel (in some cases even by two orders of magnitude). The measurements, performed for a series of Co-based metallic glass samples annealed at gradually increasing temperature to produce nanocrystalline structures with differentiated density and size of the crystallites, have shown that the calculated values of the parameter p fall within the range expected from Néel theory.
Źródło:
Acta Physica Polonica A; 1999, 95, 2; 287-296
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Surfaces of FeNbCuBSiP Ribbons
Autorzy:
Butvin, P.
Butvinová, B.
Kuzminski, M.
Ślawska-Waniewska, A.
Sitek, J.
Maťko, I.
Kadlečíková, M.
Powiązania:
https://bibliotekanauki.pl/articles/1201084.pdf
Data publikacji:
2014-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.30.Gw
75.50.Tt
75.60.Ch
Opis:
Boron was partially substituted by phosphorus (3 at.%) in two Si-poor Fe-Nb-Cu-B-Si Finemets. Mostly non-significant changes were observed after vacuum annealing at 500°C, whereas equivalent Ar annealing resulted in significantly better soft-magnetic properties, which suffer from compressive surfaces stress. Possibly by hampering surface crystallization, the substitution eased the surfaces stress and reduced undesired off-axis anisotrophy at the cost of limiting the useful annealing temperature.
Źródło:
Acta Physica Polonica A; 2014, 126, 1; 152-153
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Accents in Modern High Saturation Nanocrystalline Fe-Rich Alloys
Autorzy:
Butvinová, B.
Butvin, P.
Maťko, I.
Janičkovič, D.
Kuzminski, M.
Ślawska-Waniewska, A.
Švec, P.
Chromčíková, M.
Powiązania:
https://bibliotekanauki.pl/articles/1030276.pdf
Data publikacji:
2017-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.50.Bb
75.60.-d
75.75.-c
Opis:
Post processing limits for iron-rich Fe-Cu-Si-B-P high-induction rapidly-quenched ribbons have been tested. 530°C/20 min is already too much, formed borides being the essential culprit of magnetic properties deterioration. Unlike standard Si-poor Fe-Nb-Cu-B-Si Finemets, these alloys annealed even in "technical" Ar below the upper limit do not create significant squeezing surfaces.
Źródło:
Acta Physica Polonica A; 2017, 131, 4; 711-713
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Influence of Annealing Temperature on Magnetic Properties of Vitrovac 6030
Autorzy:
Lachowicz, H. K.
Popławski, F.
Żuberek, R.
Kulik, T.
Ślawska-Waniewska, A.
Kuźmiński, M.
Yu, S. C.
Dynowska, E.
Powiązania:
https://bibliotekanauki.pl/articles/2011100.pdf
Data publikacji:
1999-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.50.Cc
75.50.Kj
75.60.Ch
Opis:
Co-Fe-Mo-Mn-Si-B metallic glass ribbon (Vitrovac 6030) was subjected to the isothermal annealing at temperatures in the range 523-873 K so as to produce a series of samples with gradually coarser microstructure. For this series of samples a giant increase in the coercivity, exceeding three orders of magnitude, is observed. This increase is interpreted in terms of the strengthening of the pinning effect of the nanocrystalline structure on the moving domain walls. It is shown that the anisotropy of the created crystallites is mainly responsible for the increase in the pinning force since the effective anisotropy seen by the wall becomes larger and larger with the gradual increase in the density and size of the grown particles.
Źródło:
Acta Physica Polonica A; 1999, 96, 3-4; 483-494
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Polska odrodzona
Autorzy:
Pomian, Andrzej (1911-2008).
Powiązania:
Dziennik Polski i Dziennik Żołnierza. Tydzień Polski (Londyn) 2003, nr 4 -- nr 8
Współwytwórcy:
Kuzminski, Bolesław M. Uzupełnienie
Data publikacji:
2003
Tematy:
Polskie Siły Zbrojne na Zachodzie Pierwsza (1) Dywizja Grenadierów PSZ 1939-1940 r.
Opis:
(1); Polska XX wieku; nr 4; s. 1, 7.
(2); Polska Walcząca; nr 6; s. 1, 7.
(3); Polska powojenna; nr 8; s. 1, 7.
Uzup.:; Ani wzmianki [o 1. Dywizji Grenadierów Polskich]; Bolesław M. Kuzminski; Dziennik Polski i Dziennik Żołnierza. Tydzień Polski (Londyn); 2003; nr 9; s. 19.
Fot.
Dostawca treści:
Bibliografia CBW
Artykuł
Tytuł:
Influence of zearalenone on selected biochemical parameters in juvenile rainbow trout ( Oncorhynhus mykiss)
Autorzy:
Wozny, M.
Brzuzan, P.
Gusiatin, M.
Jakimiuk, E.
Dobosz, S.
Kuzminski, H.
Powiązania:
https://bibliotekanauki.pl/articles/32516.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
Zearalenone (ZEA) is a mycoestrogen frequently found in food and animal feed materials all over the world. Despite its hydrophobic character, ZEA is also found in surface and ground waters which suggests an environmental risk for aquatic animals. Knowledge concerning mycotoxin-related mechanisms of toxicity is still incomplete, e.g. little is known about the influence of ZEA exposure on fish. The aim of this study was to investigate the effect of ZEA on selected biochemical parameters in juvenile rainbow trout after 24, 72, and 168 h of intraperitoneal exposure (10 mg/kg of body weight). The analysis showed a slight tendency towards prolonged blood clotting time and significant iron deficiency in the liver and ovary of exposed animals. However, no differences in aminotransferase (AlaAT, AspAT) activity or glucose levels in fish plasma was observed. The results of this study suggest that although trout exposed to ZEA did not exhibit any distinct symptoms of liver damage, the mycotoxin tested was able interfere with blood coagulation and iron-storage processes.
Źródło:
Polish Journal of Veterinary Sciences; 2012, 15, 2
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Single stage algorithms for pole placement using static output feedback
Autorzy:
Kuźmiński, K.
Krawiecki, M.
Powiązania:
https://bibliotekanauki.pl/articles/970929.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
generalized inverse
time-invariant linear systems
static output feedback
pole placement
Kronecker product
Opis:
Paper presents effective formulae, enabling transfer matrix pole assignment. This is accomplished by the use of generalized matrix inverses and the Kronecker product. All the desired pole distributions are covered - namely simple and multiple, real and complex. On this basis one-stage algorithms were developed, avoiding commonly used reduced orthogonality condition. Computational example of the presented algorithms is given.
Źródło:
Control and Cybernetics; 2007, 36, 4; 939-969
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cytologic ploidy determination in fish - an example of two salmonid species
Autorzy:
Jankun, M.
Kuzminski, H.
Furgala-Selezniow, G.
Powiązania:
https://bibliotekanauki.pl/articles/363096.pdf
Data publikacji:
2007
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
akwakultura
ryby łososiowate
poziom ploidii
manipulacje genomowe
aquaculture
salmonid species
ploidy level determination
genome manipulation
Opis:
The method of ploidy level determination depends on the equipment, expertise of the lab or farm staff, and on the material studied (fish species, specimens' age and size, etc.). The combination of some simple techniques can be very helpful for fast, reliable and inexpensive assessment of effects of genome manipulations. Among indirect methods the nucleoli quantification seems to be the most convenient one, except that it is limited to species possessing one locus of nucleolar organizer regions (NORs) (rainbow trout as an example). Species with multilocus NORs (like brook trout) need another method, for instance sizing of erythrocytes nuclei. These techniques can be useful for identification of products resulting from new approaches in biotechnology applied to fish culture, as polyploidisation or hybridisation, for characteristics of transformation levels of organisms found in the wild or those produced due to experimental treatments.
Źródło:
Environmental Biotechnology; 2007, 3, 2; 52-56
1734-4964
Pojawia się w:
Environmental Biotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of Ophiostoma population infected elms in Poland
Autorzy:
Lakomy, P.
Kwasna, H.
Kuzminski, R.
Napierala-Filipiak, A.
Filipiak, M.
Behnke, K.
Behnke-Borowczyk, J.
Powiązania:
https://bibliotekanauki.pl/articles/41115.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
investigation
Ophiostoma
fungi
infected plant
elm
Ulmus
Dutch elm disease
Polska
Opis:
Dutch elm disease (DED) still occurs in Poland. Previous studies confirmed occurring O. ulmi and two subspecies of O. novo-ulmi: subsp. novo-ulmi and subsp. amerciana. In this study the population of Ophiostoma occurred in Poland was investigated. The disease incidence was investigated on elms growing in 39 locations. The pathogen’s mycelium was isolated from elm branches and twigs collected from 22 plots. The disease symptoms were noted in 5% to 35% trees. Fungi were identified based on the PCR amplification of the ITS 1/2 rDNA together with phylogenetic analysis of this region. Ophiostoma novo-ulmi was the only agent caused DED on Ulmus glabra, U. minor and U. laevis. There were no genetic diversity of O. novo-ulmi Polish population in analyzed ITS region. All kind of specific symptoms and disease intensity occurred independently on elm species and host age. Ulmus minor was infested most sever among the three elms species.
Źródło:
Dendrobiology; 2016, 76
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cyclopenta[c]phenanthrene induction of CYP1A in brain of rainbow trout (Oncorhynchus mykiss)
Autorzy:
Brzuzan, P.
Woźny, M.
Łuczyński, M. K.
Góra, M.
Ciesielski, S.
Kuźmiński, H.
Powiązania:
https://bibliotekanauki.pl/articles/363272.pdf
Data publikacji:
2007
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
benzo(a)piren
mózg
CYP1A
cyklopenta[c]fenantren
absolutna kwantyfikacja mRNA
pstrąg tęczowy
benzo(a)pyrene
brain
cyclopenta[c]phenanthrene
mRNA absolute quantification
rainbow trout
Opis:
We assessed the effects of cyclopenta[c]phenanthrene (CP[c]Ph) and benzo[a]pyrene (B[a]P; positive control) on CYP1A gene expression in brain of juvenile rainbow trout (Oncorhynchus mykiss) using the quantitative reverse transcription polymerase chain reaction (Q-RT-PCR). A group of hatchery raised rainbow trout, with an average body mass of 49.4 g and total length of 15.5 cm were given an intraperitoneal injection (10 mg*kg-1) of either CP[c]Ph or B[a]P in corn oil (2 mg*mi-1 corn oil) or corn oil alone (control). After 24 and 48 h, trout brains were collected for mRNA isolation and analysis. After 24 hours of the exposure, only B[a]P-treated rainbow trout had 10-fold higher number of CYP1A transcripts (mean = 3.63*106 transcripts*µg-1 total RNA) than control fish (3.24*105 transcripts*µg-1 total RNA; Tukey test, P<0.05). After 48 hrs, significantly higher levels of CYP1A expression (Tukey test, P<0.001) were found in either CP[c]Ph- or B[a]P- induced group (1.45*106 and 6.92*106 transcriptsźµg-1 total RNA, respectively) over a control group (mean=1.41*105 transcripts*µg-1 total RNA). The finding that CYP1A in brain tissue was inducible by CP[c]Ph, a polycyclic aromatic hydrocarbon (PAH) of different than B[a]P planar characteristics, may further validate the use of rainbow trout brain CYP1A mRNA levels as a biomarker of PAH exposure.
Źródło:
Environmental Biotechnology; 2007, 3, 1; 10-14
1734-4964
Pojawia się w:
Environmental Biotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Changes in elm (Ulmus) populations of mid-western Poland during the past 35 years
Autorzy:
Napierala-Filipiak, A.
Filipiak, M.
Lakomy, P.
Kuzminski, R.
Gubanski, J.
Powiązania:
https://bibliotekanauki.pl/articles/41427.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
elm
Ulmus glabra
Ulmus minor
Ulmus laevis
Dutch elm disease
alluvial habitat
forest
plant population
Polska
Opis:
Three elm species are native to Poland: wych elm (Scots elm) (Ulmus glabra Huds.), field elm (U. minor Mill.), and European white elm (fluttering elm) (U. laevis Pall.). The epidemic of Dutch elm disease (DED) has led to a decrease in the popularity of elm cultivation. An analysis of forestry data was the first step in the assessment of elm resources. The area of forest stands where elms are dominant has more than doubled since 1978. Lowland alluvial forests rank first in regards to the number of elm localities per unit area of a given forest site type. While this site type is clearly preferred by elms, the majority of elm trees are actually scattered among sites of oak-hornbeam or closely related forests (of the alliance Carpinion betuli). Field research revealed a clear dominance of U. laevis, a species which in the past was predominantly located out of woodland and rarely cultivated. Data analysis indicated that all trees greater than 70 cm in diameter belonged to this species. Data from plots surveyed directly also suggest that the three elm species have slightly different habitat preferences. U. laevis prefers riparian habitats, although the major part of its resources is now on potential sites of oak-hornbeam or closely related forests. U. minor even more often than U. laevis occurs at less humid sites (mostly potential sites of oak-hornbeam or closely related forests), while U. glabra prefers moist slopes. In general, it appears that the impact of DED in the last 20–30 years has been smaller than in the preceding period, however, the disappearance of the disease has not been established. Undoubtedly, U. laevis is the elm species that is least impacted by DED
Źródło:
Dendrobiology; 2016, 76
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Koncepcja modernizacji rozdzielni średniego napięcia na przykładzie rozdzielnic RSW oraz ST7 produkcji ZWAR
Idea of modernization of medium voltage switching stations examplified by the switchgears RSW and ST7 made by ZWAR
Autorzy:
Kuźmiński, A.
Rup, M.
Powiązania:
https://bibliotekanauki.pl/articles/186489.pdf
Data publikacji:
2009
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technik Innowacyjnych EMAG
Tematy:
modernizacja
rozdzielnia średniego napięcia
rozdzielnia ST7
rozdzielninia RSW
modernization
RSW switchgear
ST7 switchgear
switching station
Opis:
W artykule przedstawiono koncepcję szybkiej modernizacji celki niskiego napięcia w celu dostosowania jej do obowiązujących standardów. Koncepcja polega na pełnej wymianie wyposażenia celki niskonapięciowej i wstawienia w to miejsce nowoczesnego wyposażenia wraz z okablowaniem tak aby zminimalizować możliwość popełnienia błędów i maksymalnie skrócić czas ponownego oddania rozdzielnicy do eksploatacji.
An idea of a rapid modernization of a low voltage cell to adapt it to the standards in force has been presented in the paper. The idea consists in a complete replacement of the equipment of the low voltage cell by modern accessories including the cabling to minimize making mistakes and to shorten time most possible to put again the switchgear into operation.
Źródło:
Mechanizacja i Automatyzacja Górnictwa; 2009, R. 47, nr 7, 7; 20-23
0208-7448
Pojawia się w:
Mechanizacja i Automatyzacja Górnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza działalności Poradni Toksoplazmozy przy I klinice Położnictwa i Chorób Kobiecych AM w Gdańsku. Zagadnienie diagnostyki
The activity of he Antitoxoplasmosis Dispensary at the Medical Academy in Gdansk (The problem of diagnostics)
Analiz dejatel'nosti konsul'tacii toksoplazmoza pri I Klinike Akusherstva i Zhenskikh Boleznejj Medicinskojj Akademii v Gdan'ske (Problema diagnostiki)
Autorzy:
Drążkowski, H.
Kuźminski, R.
Nowak, A.
Szudarski, M.
Powiązania:
https://bibliotekanauki.pl/articles/2176852.pdf
Data publikacji:
1972
Wydawca:
Polskie Towarzystwo Parazytologiczne
Źródło:
Wiadomości Parazytologiczne; 1972, 18, 2-3; 197-201
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowanie elementów teorii wartości ekstremalnych do oceny dynamiki ryzyka powodziowego w dorzeczu Odry na przykładzie stacji hydrologicznej w m. Trestno
Application of the Extreme Values Theory to Assess the Dynamics of Flood Risk in the River Odra Basin on the Example of the Hydrological Station in Town Trestno
Autorzy:
Szałata, Ł.
Kuźmiński, Ł.
Zwoździak, J.
Powiązania:
https://bibliotekanauki.pl/articles/1818007.pdf
Data publikacji:
2016
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
ryzyko powodziowe
stany wód
rozkłady wartości maksymalnych
rozkład Frecheta
flood risk
water levels
extreme value distributions
Frechet distribution
Opis:
The aim of the article is to assess the variability of the floods’ risk with the use of maximal values distribution. In the authors’ researches, the hydrometric data in the form of daily water levels from the period of years 1981-2013 will be used. The collected data come from the hydrological station in town Trestno, located in the 242.1 km of Odra River (in southern-west Poland). For the purpose of estimating the flood risk, quarterly highs from the collected data have been selected. Authors have taken the probability of exceeding the alarm states for the analyzed section of the river as a measure of the risk of appearing floods. This risk has been calculated by using the theoretical cumulative distribution of quarterly highs of the water levels. The Frechet distribution was used in the studies as well. At the same time, the article has paid significant attention to the possibility of adapting the shown solutions for the integrated flood risk management process in accordance with the current National and European legislations.
Źródło:
Rocznik Ochrona Środowiska; 2016, Tom 18, cz. 2; 974-987
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-16 z 16

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