Wszystkie pola: Franco, V. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Scaling analysis of the magnetocaloric effect in Co/Au nanoparticles
Autorzy:: Hrubovčák, P.
Zeleňáková, A.
Zeleňák, V.
Franco, V.
Powiązania:: https://bibliotekanauki.pl/articles/1054838.pdf
Data publikacji:: 2017-04
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.30.Sg
75.75.Fk
65.40.gd
Opis:: The system of superparamagnetic Co/Au bimetallic nanoparticles of average diameter 7 nm was investigated with respect to its magnetocaloric properties. DC magnetic measurements revealed the presence of field dependent zero field cooled M(T) maximum (6-8 K) and significant zero field cooled/field cooled irreversibility at low temperatures in the system. Documented thermal hysteresis disallow standard magnetic entropy change calculation from isothermal M(H) data, thus we attempted to employ zero field cooled M(T) data for this purpose. Magnetic entropy change was calculated employing the Maxwell relation. In maximal field variation of 1 T relative high magnetic entropy change for nanoparticles Δ S_M ≈ 0.7 J/(kg K) at T =9 K was observed. The data collapsed onto single universal curve after proper axis rescaling.
Źródło:: Acta Physica Polonica A; 2017, 131, 4; 795-797
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Magnetocaloric Effect in Nanostructured $Pr_2Fe_{17}$ and $Nd_2Fe_{17}$ Synthesized by High-Energy Ball-Milling
Autorzy:: Alvarez, P.
Sánchez-Marcos, J.
Sanchez Llamazares, J.
Franco, V.
Reiffers, M.
Blanco, J.
Gorria, P.
Powiązania:: https://bibliotekanauki.pl/articles/1534200.pdf
Data publikacji:: 2010-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 61.05.cp
75.50.Tt
75.30.Kz
Opis:: Nanocrystalline $Pr_2Fe_{17}$ and $Nd_2Fe_{17}$ powders with rhombohedral $Th_2Zn_{17}$-type crystal structure and average particle sizes around 20 nm have been obtained by high-energy ball milling. While the bulk alloys show a well-defined and sharp drop in the low-field magnetization curve at the Curie temperature, $T_{C}$ = 285 K (Pr) and 335 K (Nd), the ball-milled samples exhibit a substantial broadening of the ferro-to-paramagnetic transition due to a considerable augmentation of the disordered inter-grain boundaries. The latter results in an increase of more than 25% in the values of the full width at half maximum of the temperature dependence of the magnetic entropy change maintaining almost unchanged the relative cooling power.
Źródło:: Acta Physica Polonica A; 2010, 118, 5; 867-869
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Thermal Modelling of Quantum Cascade Lasers
Autorzy:: Spagnolo, V.
Vitiello, M.
Di Franco, C.
Scamarcio, G.
Powiązania:: https://bibliotekanauki.pl/articles/1791179.pdf
Data publikacji:: 2009-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 61.46.-w
61.82.Fk
68.35.Ct
Opis:: One of the top priorities in the development of quantum cascade laser sources is the optimization of the heat transport dynamic. We review here our experimental studies on the thermal properties of state of art quantum cascade lasers operating both in the mid-IR and THz ranges. The experimental approach is based on the investigation of the band-to-band photoluminescence signals, collected during device continuous wave operation. We measured the lattice temperature profile on the device front facet and using these data as inputs, we extract the heat dissipation patterns, the in-plane and the cross-plane active region thermal conductivities and the thermal boundary resistance for quantum cascade lasers based on different material systems.
Źródło:: Acta Physica Polonica A; 2009, 116, 4; 451-454
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Wojna francusko-pruska : niemieckie zwycięstwo nad Francją w latach 1870-1871
Franco-Prussian war : the german conquest of France in 1870-1871
Autorzy:: Wawro, Geoffrey (1960- ).
Współwytwórcy:: Tomczak, Juliusz. Tłumaczenie
Firma Handlowo Usługowa NAPOLEON V, Dariusz Marszałek. pbl
Data publikacji:: 2015
Wydawca:: Oświęcim : Wydawnictwo Napoleon V
Tematy:: Wojna francusko-pruska (1870-1871)
Wojsko
Opis:: Tyt. oryg.: The Franco-Prussian war: the German conquest of France in 1870-1871.
Bibliogr. s. 345-349. Indeks.
Dostawca treści:: Bibliografia CBW

Książka

Skocz do pozycji: 5.

Tytuł:: Charakterystyka roślinności runa kształtującej się pod drzewostanami daglezjowymi (Pseudotsuga menziesii (Mirb.) Franco.) w lasach gospodarczych Republiki Czeskiej
Characteristic of forest floor developed under Douglas fir (Pseudotsuga menziesii (Mirb.) Franco) stands in commercial forest in Czech Republic
Autorzy:: Viewegh, J.
Podrazsky, V.
Matejka, K.
Powiązania:: https://bibliotekanauki.pl/articles/990015.pdf
Data publikacji:: 2014
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: lesnictwo
daglezja zielona
Pseudotsuga menziesii
drzewostany gospodarcze
drzewostany daglezjowe
runo lesne
roslinnosc
zbiorowiska roslinne
Republika Czeska
douglas fir
stands
forest floor
plant communities
Opis:: The aim of study was to characterize Douglas fir (Pseudotsuga menziesii (Mirb.) Franco) commercial stands and their influence on the forest floor plant communities. Study plots were performed in different regions of the Czech Republic. In total 44 plots were arranged in older Douglas fir stands with well developed forest floor vegetation. For the comparison, the study plots were also established in Norway spruce and broad−leaved tree species (beech, linden, oak) stands. Compared to other studied species, the main effect of Douglas fir on plants was noted in higher share of nitrophilous species.
Źródło:: Sylwan; 2014, 158, 04; 277-284
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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