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Wyszukujesz frazę "Gondek, A." wg kryterium: Wszystkie pola


Tytuł:
Structural, magnetic, and Mössbauer effect studies of bornite
Autorzy:
Przewoźnik, J.
Żukrowski, J.
Gondek, Ł.
Lemański, A.
Kapusta, C.
Piestrzyński, A.
Powiązania:
https://bibliotekanauki.pl/articles/147362.pdf
Data publikacji:
2013
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
bornite
hyperfine interactions
magnetic properties
Mössbauer spectroscopy
Opis:
The results of a combined study of bornite with Mossbauer spectroscopy, X-ray diffraction and DC magnetometry are reported. The orthorhombic crystallographic structure of the mineral is observed at 15 K and 300 K. It exhibits an increase of the orthorhombic distortion with decreasing temperature. Magnetic susceptibility shows a Curie-Weiss like behaviour between 230 K and 380 K corresponding to the effective magnetic moment of 7.2(3) mi B per formula unit. The material undergoes a transition to an antiferromagnetic-like state at 75 K. Mossbauer spectra at the paramagnetic range are doublets with a small quadrupole splitting and the isomer shift corresponding to a high spin Fe3+ state. Upon magnetic ordering, a coexistence of the paramagnetic doublet with a broadened magnetic sextet is observed indicating an inhomogeneous character of the magnetic transition. The hyperfine field of 350 kOe at 4.2 K is much lower than that observed for a high spin Fe3+ in oxides (510 kOe) which is attributed to covalence effects and a possible copper contribution to the effective magnetic moment of the compound.
Źródło:
Nukleonika; 2013, 58, 1; 43-46
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magnetic Properties of Hexagonal RTIn Rare-Earth Intermetallics with Frustration
Autorzy:
Szytuła, A.
Baran, S.
Gondek, Ł.
Arulraj, A.
Penc, B.
Stüsser, N.
Powiązania:
https://bibliotekanauki.pl/articles/1538314.pdf
Data publikacji:
2010-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.20.Lp
75.30.Kz
Opis:
Magnetic properties, including magnetic structure, of some RTIn compounds (R = Tb-Er; T = Cu, Ni, Pd, Pt, Au) with the hexagonal ZrNiAl-type crystal structure are reported. Distribution of the rare earth atoms in the basal plane is similar to the kagomé-lattice. Magnetic moments are localized exclusively on the rare earth atoms and form different types of magnetic ordering. Experimental results are analyzed within the Ruderman-Kittel-Kasuya-Yosida and crystal electric field frames. Monte Carlo simulations, including the $J_{1}$ and $J_{2}$ exchange integrals between nearest and next nearest spins and Dzialoshinsky-Moriya interaction, were performed resulting in a number of magnetic phases, some of which are in good agreement with the magnetic ordering determined in the neutron diffraction experiments.
Źródło:
Acta Physica Polonica A; 2010, 117, 4; 590-594
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Teleological Interpretation of the Applicability of Rhetoric in the Peripatetic Tradition
Autorzy:
Gondek, Maria Joanna
Powiązania:
https://bibliotekanauki.pl/articles/507659.pdf
Data publikacji:
2018-06-30
Wydawca:
International Étienne Gilson Society
Tematy:
Aristotle
end
deliberative rhetoric
judicial rhetoric
epideictic rhetoric
Opis:
For Aristotle, the classification of the audience is the basis of distinguishing the main genres of rhetoric. Due to the auditor receiving political, judicial or educational content, there is a distinction into deliberative, judicial, and epideictic rhetoric. There are three more specific ends of rhetoric connected with the three basic types of auditors. Due to the communicative character of rhetoric, these ends are achieved against the background of the relation to the subject of the speech, referring to the decisions made by the auditor. Deliberative rhetoric is speech or writing that attempts to persuade an audience to take (or not to take) some action. The specific end of this rhetorical genre is good. Judicial rhetoric is speech or writing that considers the justice or injustice of a certain charge or accusation. Epideictic rhetoric is speech or writing that praises (encomium) or blames (invective). Persuasion in rhetoric happens because of a specific end: goodness, justice, nobility. Thus, the specific nature of the end of persuasion is taken into account. Perceiving the end against the background of the subject of persuasion allows one to develop a method. The method that determines the applicability of rhetoric occurs in the tradition of peripatetic rhetoric in a non-autonomous way, but is closely related to the end and to the subject of speech.
Źródło:
Studia Gilsoniana; 2018, 7, 2; 181-199
2300-0066
Pojawia się w:
Studia Gilsoniana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spin Frustration in Some Magnetic Compounds
Autorzy:
Szytuła, A.
Gondek, Ł.
Penc, B.
Hernandez-Velasco, J.
Powiązania:
https://bibliotekanauki.pl/articles/2038386.pdf
Data publikacji:
2004-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.10.Nr
75.25.+z
75.50.Ee
Opis:
In the paper the results of the powder neutron diffraction measurements of RAuIn (R = Ce, Tb, Dy, and Er) and ZnFe$\text{}_{2}$O$\text{}_{4}$ compounds at low temperatures are presented. For the RAuIn compounds, which crystallize in the hexagonal ZrNiAl-type structure, the rare-earth moments lie in the ab-plane and form a typical triangle non-collinear structure. ZnFe$\text{}_{2}$O$\text{}_{4}$ has the normal spinel structure in which the Fe$\text{}^{3+}$ ions occupy the B sites, forming the corner-shared tetrahedra of the Fe spins. At low temperatures experimental data indicate the coexistence of the long-range and the short-range magnetic order. The obtained results suggest that the important factor which influences the magnetic ordering in these compounds is geometrical frustration of magnetic moments.
Źródło:
Acta Physica Polonica A; 2004, 106, 5; 583-591
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magnetic Properties and Electronic Structure of CeTIn (T = Ni, Cu, Pd, Au) Compounds
Autorzy:
Szytuła, A.
Penc, B.
Gondek, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/2047306.pdf
Data publikacji:
2007-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.20.Eh
71.27.+a
75.20.Hr
79.60.-i
Opis:
The electronic structure of the ternary CeTIn (T = Ni, Cu, Pd, Au) compounds was investigated by means of X-ray photoelectron spectroscopy. Our interest was aimed mainly to the valence bands and the Ce3d core levels of investigated compounds. Analysis of the valence bands indicates that they are mainly determined by the Tnd band, whereas a share of the R4f states can be estimated to be about a few percent only. The analysis of the differential valence bands spectra between CeTIn and LaTIn analogues suggests that the Ce4f$\text{}^{1}$ ground states shift deeper below the Fermi level with an increase in the 4f level occupation factor. The analysis of the Ce3d spectra made on the basis of the Gunnarsson-Schönhammer model indicates the hybridization parameter equal to 148 meV for CeNiIn, 45 meV for CeCuIn, 177 meV for CePdIn, and 123 meV for CeAuIn.
Źródło:
Acta Physica Polonica A; 2007, 111, 4; 475-486
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Low-Temperature Specific Heat and Magnetocaloric Effect in $RCu_2Ge_2$ (R = Dy-Tm) Compounds
Autorzy:
Gondek, Ł.
Kaczorowski, D.
Pikul, A.
Szytuła, A.
Powiązania:
https://bibliotekanauki.pl/articles/1419609.pdf
Data publikacji:
2012-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.30.-m
75.30.Sg
75.40.Cx
Opis:
The magnetocaloric effect in $RCu_2Ge_2$ (R = Dy-Tm) was investigated by means of specific heat measurements. The compounds order antiferromagnetically at 6.2 K $(DyCu_2Ge_2),$ 5.6 K $(HoCu_2Ge_2),$ 3.0 K $(ErCu_2Ge_2),$ and 3.9 K $(TmCu_2Ge_2),$ and some of them exhibit additional magnetic transitions in the ordered state. In an external magnetic field the low-temperature specific heat changes significantly, which can be attributed to metamagnetic-like transitions. In this temperature region, the investigated samples show distinctly different magnetocaloric effect.
Źródło:
Acta Physica Polonica A; 2012, 122, 2; 391-393
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magnetic Properties of $RSn_{2}$ (R = Tb, Dy) Compounds
Autorzy:
Szytuła, A.
Kaczorowski, D.
Gondek, Ł.
Czub, J.
Nenkov, K.
Powiązania:
https://bibliotekanauki.pl/articles/1538313.pdf
Data publikacji:
2010-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.40.-s
75.30.Kz
72.15.Eb
Opis:
Polycrystalline samples of $TbSn_{2}$ and $DySn_{2}$ were studied by means of magnetic susceptibility, electrical resistivity and heat capacity measurements. Both compounds have been found to order antiferromagnetically at low temperatures with some extra features in the ordered state due to changes in their magnetic structures. The two stannides exhibit metallic conductivity. The estimated crystal field levels splitting of $Tb^{3+}$ and $Dy^{3+}$ ground multiplets do not exceed 75 K.
Źródło:
Acta Physica Polonica A; 2010, 117, 4; 586-589
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fading memories of the Second World War in a socio-educational and cultural perspective. A research report from Poland
Autorzy:
Odrowąż-Coates, Anna
Kulbaka, Jacek
Gondek, Bartosz
Powiązania:
https://bibliotekanauki.pl/articles/2187227.pdf
Data publikacji:
2022-12-31
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
teaching history
memory
WW2
schoolbooks
reconstruction
living
history
Opis:
Memories of World War II (WW2) have a deeply cultural dimension and therefore are interesting for intercultural studies. This paper is based on an interpretative analysis of some field and desk research data, carried out in Poland by an interdisciplinary team of social scientists, educators and historians in 2018–2020. It is focused on socio-educational factors in the transfer of knowledge and memory of WW2. The researchers try to distinguish socio-educational factors responsible for the preservation of this memory across a range of age cohorts. Sources of knowledge, school curricula and socio-demographic aspects are set against the measured levels of historic facts concerning WW2. The data sets derive from questionnaires, telephone interviews and in-depth interviews with diverse groups of respondents along with a review of teaching history curricula in 1946–2020. On the basis of the findings, it is argued that a successful transfer of memory and knowledge of WW2 goes beyond teaching history at schools and beyond the contemporary political agenda. This article is meant to serve as a barometer of social changes in respect to fading memories of WW2.
Źródło:
Edukacja Międzykulturowa; 2022, 19, 4; 27-47
2299-4106
Pojawia się w:
Edukacja Międzykulturowa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Complex Magnetic Behaviour of $Ho_3Cu_4X_4$ Compounds (X = Si and Sn)
Autorzy:
Gondek, Ł.
Szytuła, A.
Prokhnenko, O.
Powiązania:
https://bibliotekanauki.pl/articles/1813174.pdf
Data publikacji:
2008-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.25.+z
75.50.Ee
75.40.Cx
Opis:
Ternary $Ho_3Cu_4X_4$ compounds exhibit very complex magnetic phase diagrams. The rare earth ions occupy two non-equivalent crystal positions. Within both magnetic sublattices, magnetic moments exhibit different magnetic ordering temperatures. Moreover, in light of our results, it seems that both sublattices are weakly coupled between each other. This may be observed as independent changes of propagation vectors etc. The major difference of ordering temperatures between both compounds is likely related to substantial change of interatomic distances. Consequently, completely different crystalline electric field effects are observed.
Źródło:
Acta Physica Polonica A; 2008, 113, 4; 1179-1184
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Co Doping on Crystal and Magnetic Properties of $Gd_2Cu_2In$
Autorzy:
Gondek, Ł.
Szytuła, A.
Kaczorowski, D.
Szewczyk, A.
Gutowska, M.
Tyvanchuk, Yu.
Kalychak, Ya.
Powiązania:
https://bibliotekanauki.pl/articles/1419907.pdf
Data publikacji:
2012-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.30.-m
75.30.Kz
75.50.Ee
Opis:
Physical properties of $Gd_2Cu_{2 - x}Co_{x}In$ (x = 0.1, 0.2, 0.3) samples are investigated. The paper brings results of X-ray diffraction, magnetometric as well as specific heat studies. It was found that only sample with x = 0.1 exhibits desired crystal structure. Other compositions show existence of impurities due to lack of dissolution Co atoms. For $Gd_2Cu_{1.9}Co_{0.1}In$ sample the Curie temperature of 92.5 K was evidenced. Thus, an enhancement of ferromagnetic correlations with comparison to $Gd_2Cu_2In$ sample was evidenced. It was found that $Gd_2Cu_{1.9}Co_{0.1}In$ sample exhibits magnetocaloric effect within broad temperature range.
Źródło:
Acta Physica Polonica A; 2012, 122, 1; 216-219
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Content of PAHs, activities of γ-radionuclides and ecotoxicological assessment in biochars
Autorzy:
Gondek, K.
Mierzwa-Hersztek, M.
Smreczak, B.
Baran, A.
Kopeć, M.
Mróz, T.
Janowski, P.
Bajda, T.
Tomczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/778621.pdf
Data publikacji:
2016
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
biochar
sewage sludge
PAHs
γ-radionuclides
Vibrio fischeri
Opis:
The aim of this research was to determine the effect of thermal conversion temperature and plant material addition to sewage sludge on the PAHs content and the activity of selected γ-radionuclides in biochars, and to conduct an ecotoxicological assessment. The pyrolysis of the mixtures of sewage sludge and plant materials at 300°C and such temperature caused an increase in the contents of 2- and 3-ring hydrocarbons. During the pyrolysis of organic materials at 600°C, the amount of the following compounds was reduced in biochars: benzo[b]fluoranthene, benzo[k]fluoranthene, benzo[a]pyrene, indeno[1,2,3c,d]pyrene, dibenzo[a,h]anthracene, and benzo[g,h,i]perylene. Among γ-radioisotopes of the elements, natural radiogenic isotopes were dominant. 137Cs was the only artificial radioactive isotope. The pyrolysis of the mixtures of municipal sewage sludge and plant materials revealed that isotope  40K had the highest radioactive activity. In the case of other analysed nuclides, activities of  212Pb,  214Pb,  214Bi, and  137Cs were determined after the sample pyrolysis. The extracts from the mixtures of sewage sludge and plant materials were non-toxic to Vibrio fischeri.
Źródło:
Polish Journal of Chemical Technology; 2016, 18, 4; 27-35
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
FT-IR analysis and the content of phenolic compounds in exogenous organic matter produced from plant biomass
Autorzy:
Mierzwa-Hersztek, M.
Gondek, K.
Nawrocka, A.
Pinkowska, H.
Bajda, T.
Stanek-Tarkowska, J.
Szostek, M.
Powiązania:
https://bibliotekanauki.pl/articles/15427.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Źródło:
Journal of Elementology; 2019, 24, 3
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The content and composition of organic matter in bottom sediments of the Rybnik reservoir - preliminary studies
Autorzy:
Baran, A.
Mierzwa-Hersztek, M.
Gondek, K.
Szara, M.
Tarnawski, M.
Powiązania:
https://bibliotekanauki.pl/articles/184606.pdf
Data publikacji:
2018
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
bottom sediments
organic matter
buffer capacity
pollutions
Opis:
Organic matter has important influences on the fate of environmental pollution in water dam reservoirs. The aim of the studies was to assess content of organic matter fractions in Rybnik reservoir bottom sediments, and to determine their influence on the content of heavy metals and PAHs. In three sediment samples, the content of C organic (Corg), C extracted (Cex), C humic acid (Cha), C fulvic acid (Cfa) and C non-hydrolyzed (Cnh), buffer capacity, and content of heavy metals and PAHs was analyzed. We found the highest content of Corg, Cex, Cha, Cfa and Cnh in sample 3 (the outlet, near the dam), while the lowest content was found in sample 2 (middle). The fraction of Cnh was dominant in sediment sample 3 (outlet, near dam) and 1 (inlet), whereas the fraction of Cha dominated in sample 2 (middle). Rybnik bottom sediments are characterized by their high buffer capacities (samples 3, 1) shaped among others by the high content of organic matter. The high organic matter content in samples 3 (outlet) and 1 (inlet) and also high total contents of heavy metals and PAHS in these sediments demonstrate that these pollutants have a strong affinity for organic matter in the sediments. Moreover, the highest mobility of metals, from sample 2 (middle), is connected with the low content of organic matter substances and the low buffer capacities of sediments.
Źródło:
Geology, Geophysics and Environment; 2018, 44, 3; 309-317
2299-8004
2353-0790
Pojawia się w:
Geology, Geophysics and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of fertilisation with compost from municipal solid wastes on concentration of selected heavy metals in soil and maize
Nawożenie kompostami z odpadów komunalnych a zawartość wybranych metali ciężkich w glebie i kukurydzy
Autorzy:
Ozimek, A.
Koncewicz-Baran, M.
Gondek, K.
Powiązania:
https://bibliotekanauki.pl/articles/34811.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Opis:
The aim of the study was estimation of the direct and consequential effect of fertilisation with compost from municipal wastes and compost from “green” wastes and other biodegradable wastes on the content of selected heavy metals (Cr, Pb, Cd, Ni) in maize biomass and on the content of available forms those elements in soil. The nitrogen dose applied per pot (8.60 kg of airdry soil material) in the first year of the study in fertilised treatments was 1.00 g. In the case of treatments in which the organic materials were applied, the dose of nitrogen was introduced in whole with those materials, or as a divided dose (0.50 g N with the organic material + 0.50 g N in mineral form, NH4NO3). For comparison, fertilisation with chemically pure mineral salts and with swine manure was applied. The largest quantity of biomass, both aboveground parts and roots, was obtained in the first year of the study, in the treatment in which fertilisation with mineral salts was applied. In the second year, significantly the highest yields of maize biomass were obtained in treatments with composts or manure. The study showed also a positive response of maize to organic fertilisation applied in conjunction with mineral fertilisation. The introduction of considerable amounts of heavy metals into the soil with the compost from nonsegregated municipal wastes did not cause their excessive accumulation in maize. Higher levels of available forms of the heavy metals under study were assayed in the soil immediately after the application of the composts than in the second year.
W badaniach oceniono bezpośredni i następczy wpływ nawożenia kompostem z niesegregowanych odpadów komunalnych oraz kompostem z odpadów roślinnych i innych biodegradowalnych na zawartość wybranych metali ciężkich (Cr, Pb, Cd, Ni) w biomasie kukurydzy, a także na zawartość dostępnych form tych pierwiastków w glebie. Dawka azotu zastosowana w przeliczeniu na wazon (8,60 kg powietrznie suchego materiału glebowego) w pierwszym roku badań w obiektach nawożonych wynosiła 1,00 g. W przypadku obiektów, w których zastosowano materiały organiczne dawka azotu została wprowadzona w całości z tymi materiałami lub jako dawka podzielona (0,50 g N z materiałem organicznym + 0,50 g N w formie mineralnej NH4NO3). Dla porównania zastosowano nawożenie czystymi chemicznie solami oraz obornikiem trzody chlewnej. Największą ilość biomasy, zarówno części nadziemnych jak i korzeni, uzyskano w pierwszym roku badań w obiekcie, w którym zastosowano nawożenie solami mineralnymi. W drugim roku badań istotnie największe plony biomasy kukurydzy uzyskano w obiektach, w których zastosowano komposty lub obornik. Badania wykazały również pozytywną reakcję kukurydzy na nawożenie organiczne w połączeniu z mineralnym. Wprowadzenie do gleby z kompostem z niesegregowanych odpadów komunalnych znacznych ilości metali ciężkich nie spowodowało nadmiernego ich nagromadzenia w kukurydzy. Więcej przyswajalnych form badanych metali ciężkich w glebie oznaczono bezpośrednio po zastosowaniu kompostów niż w drugim roku badań.
Źródło:
Acta Agrophysica; 2012, 19, 4
1234-4125
Pojawia się w:
Acta Agrophysica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermal Fluctuations in YBCO Thin Film on MgO Substrate
Autorzy:
Chrobak, M.
Woch, W.
Szwachta, G.
Zalecki, R.
Gondek, Ł.
Kołodziejczyk, A.
Kusiński, J.
Powiązania:
https://bibliotekanauki.pl/articles/1374789.pdf
Data publikacji:
2014-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
74.72.-h
74.78.-w
74.40.-n
74.62.-c
Opis:
The c-axis orientation $YBa_2Cu_3O_δ$ thin film was prepared directly on MgO substrate by the pulse laser deposition. The thickness of the film was 170 nm. The superconducting critical temperature was $T_{c50%}$=89 K and the width of superconducting transition was Δ T= 1.6 K. Temperature dependence of the critical current of the film was obtained from the temperature dependences of the imaginary part of the AC susceptibility using the Bean model. The critical current density was $J_{c}$=1.2×$10^7$ A/$cm^{2}$ at 77 K in the self field. The critical exponents were calculated for several values of the DC applied magnetic field using the temperature dependences of magnetoresistivity. The thermal fluctuations in vicinity of the critical temperature were analysed.
Źródło:
Acta Physica Polonica A; 2014, 126, 4a; A-88-A-91
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł

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