Search results for: M. Falkowski

Items from 1 to 20 out of 118 results

article

The Importance of Consistent Global Forest Aboveground Biomass Product Validation

L. Duncanson, J. Armston, M. Disney, V. Avitabile, more

Surveys in Geophysics > 2019 > 40 > 4 > 979-999

Several upcoming satellite missions have core science requirements to produce data for accurate forest aboveground biomass mapping. Largely because of these mission datasets, the number of available biomass products is expected to greatly increase over the coming decade. Despite the recognized importance of biomass mapping for a wide range of science, policy and management applications, there remains...

article

Inhomogeneous Superconducting Behaviour in $$\hbox {La}_{5}\hbox {Ni}_{2}\hbox {Si}_{3}$$ La 5 Ni 2 Si 3

M. Falkowski, A. Kowalczyk, A. M. Strydom, M. Reiffers, more

Journal of Low Temperature Physics > 2017 > 189 > 1-2 > 120-131

The superconducting phase transition at $$T_\mathrm{c} = 2.3$$ T c = 2.3 K was observed for the electrical resistivity $$\rho ({T})$$ ρ ( T ) and magnetic susceptibility $$\chi (T)$$ χ ( T ) measurements in the ternary compound La $$_{5}\hbox {Ni}_{2}\hbox {Si}_{3}$$ 5 Ni 2 Si 3 that crystallizes in the hexagonal-type structure. Although a single-phase...

article

Thermal and electron transport properties of Ce2Ni3Ge5 and Ce3NiGe2: Example of Kondo behavior in the presence of the crystalline field effect

M. Falkowski

Journal of Alloys and Compounds > 2016 > 689 > C > 1059-1067

Thermal and electron transport properties of the two Kondo compounds Ce₂Ni₃Ge₅ and Ce₃NiGe₂ and of their nonmagnetic reference compounds La₂Ni₃Ge₅ and La₃NiGe₂ were investigated by measurements of the thermoelectric power S, thermal conductivity κ, and electrical resistivity ρ. The effects of an applied magnetic field on the thermal and electron transport properties of both Ce compounds were examined...

article

The installation of the anti-missile shield in Poland –an opportunity, a threat or a challenge?

M. Falkowski, M. Liberek

Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki > 2016 > Nr 3 > 20--36

The purpose of this article is to present the potential effects of an anti-missile defense shield in Poland. The publication addresses selected political, military, financial and social aspects that affect building of the shield. In addition, the position of Poland in the NATO missile defense system was characterized, as was the concept of air defense in Europe. The authors also discuss the issue...

article

Spór o przyszłość Puszczy Białowieskiej: mity i fakty. Głos w dyskusji

T. Wesolowski, A. Kujawa, A. Bobiec, A. Bohdan, more

Chrońmy Przyrodę Ojczystą > 2016 > 72 > 2

article

Spór o przyszłość Puszczy BIałowieskiej: mity i fakty. Głos w dyskusji

T. Wesolowski, A. Kujawa, A. Bobiec, A. Bohdan, more

Przegląd Leśniczy > 2016 > 26 > 9

article

Puszcza Białowieska - obiekt światowego dziedzictwa UNESCO - priorytety ochronne

A. Kujawa, A. Orczewska, M. Falkowski, M. Blicharska, more

Leśne Prace Badawcze > 2016 > 77 > 4

article

Effect of La substitution on thermopower in Kondo lattice CeNiAl4

A. Kowalczyk, M. Falkowski, T. Toliński

Journal of Magnetism and Magnetic Materials > 2015 > 393 > C > 36-39

The temperature dependence of the thermopower S(T) for Ce_1−xLa_xNiAl₄ alloys have been studied. Thermopower of CeNiAl₄ Kondo lattice system has larger value than for usual metals, reflecting enhanced electronic density of states near the Fermi level. In comparison to CeNiAl₄, the substitution of Ce by La drastically reduces the S(T) values. The S(T) dependence of Ce_1−xLa_xNiAl₄ exhibits positive or...

article

Thermal Conductivity of Ce₂Ru₃Ga₉ Compound

M. Falkowski, A. Strydom

Acta Physica Polonica A > 2015 > 127 > 2 > 240-242

The Ce-based 2:3:9 series of compounds are known for strongly correlated 4f-electron behaviour. Here, we report for the first time a study of the thermal conductivity κ(T) in zero and 9 T magnetic field for Ce₂Ru₃Ga₉ across the temperature range 2 K ≤ T ≤ 300 K. The zero-field temperature dependence of κ(T) exhibits a pronounced maximum, characteristic for metals with large electronic mean free path...

article

Plan zadań ochronnych dla obszaru Natura 2000 Dąbrowy Ceranowskie PLH140024 w świetle gospodarki leśnej

M. Falkowski, K. Nowicka-Falkowska, A. Adamska, L. Brylak

Acta Scientiarum Polonorum. Formatio Circumiectus > 2015 > 14 > 2

Praca przedstawia projekt Planu Zadań Ochronnych dla obszaru Natura 2000 Dąbrowy Ceranowskie PLH140024, w którym przedmiotami ochrony są siedliska przyrodnicze: 9170 Grąd środkowoeuropejski i subkontynentalny (Galio-Carpinetum, Tilio- -Carpinetum) i 91I0* Ciepłolubne dąbrowy (Quercetalia pubescenti-petraeae). Celem pracy jest utrzymanie lub odtworzenie właściwego stanu przedmiotów ochrony, który to...

article

Szata roślinna rezerwatu Mierzwice (Nadleśnictwo Sarnaki) i jej ochrona

J. Krechowski, K. Piorek, M. Falkowski, M. Wierzba

Leśne Prace Badawcze > 2015 > 76 > 2

article

Crystalline field effect and magnetic ordering in the heavy fermion Kondo lattice Ce6Pd12In5

M. Falkowski, A.M. Strydom

Journal of Alloys and Compounds > 2014 > 613 > Complete > 204-212

Results of magnetic, specific heat, electric and thermal transport studies carried out on the novel hexagonal-type structure Ce ₆ Pd ₁₂ In ₅ compound, with a unique site for Ce, two sites for In and four sites for Pd are reported. The compound exhibits long-range order, probably of antiferromagnetic type, below TN=1.6K in spite of a moment reducing Kondo effect acting on the...

article

Thermal conductivity and Lorenz number of the Ce1−xLaxNiAl4 Kondo alloys

A. Kowalczyk, M. Falkowski, T. Toliński

Solid State Communications > 2014 > 193 > Complete > 26-29

The temperature dependence of the thermal conductivity (κ) for Ce _1−x La _x NiAl ₄ alloys has been studied. In comparison to LaNiAl ₄ , the substitution of La by Ce reduces the κ values. The behaviour of the Lorenz number L in the Kondo alloys Ce _1−x La _x NiAl ₄ differs considerably both in magnitude and in temperature dependence from L characteristic...

article

Magnetic Properties and Magnetocaloric Effect of DyNi_{4}Si

K. Synoradzki, W. Kowalski, M. Falkowski, T. Toliński, more

Acta Physica Polonica A > 2014 > 126 > 1 > 162-163

The magnetic properties and magnetocaloric effect (MCE) in DyNi_{4}Si have been studied by the magnetization and specific heat measurements. The saturation magnetic moment in μ_{0}H=9 T is equal to 7.9 μ_{B}/f.u at 4.2 K. A significant MCE has been observed around the second order phase transition at T_{C}=11 K. The maximum magnetic entropy change is -Δ S_{M}=14.5 J kg^{-1}K^{-1} for the magnetic...

article

Thermopower of Ce1–xLaxCu4Al in applied magnetic fields

M. Falkowski, A. Kowalczyk

Journal of Alloys and Compounds > 2014 > 591 > Complete > 293-296

Here we report the continued investigations of thermopower S(T) for Ce _1– _x La _x Cu ₄ Al intermetallic alloys, particularly focusing on the influence of the applied magnetic fields. In comparison to CeCu ₄ Al, the substitution of Ce by La reduces the S(T) values. S(T) of Ce _1– _x La _x Cu ₄ Al compounds exhibit positive values and large...

article

Non-Fermi Liquid Behaviour in the Heavy-Fermion Kondo Lattice Ce₂Rh₃Al₉

M. Falkowski, A. M. Strydom

Journal of Low Temperature Physics > 2014 > 175 > 1-2 > 498-507

In the heavy fermion class of strongly correlated electron systems, the Landau Fermi liquid description of metals has become a rather fragile basis on which to formulate an understanding of their ground state. The proximity to cooperative phenomena such as magnetic order and superconductivity and the amenability of Ce- and Yb-based compounds to be tuned into quantum criticality have been found to...

article

Konstrukcje drogowych mostów składanych

A. Mondel, M. Falkowski

Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki > 2014 > Nr 4 > 118--130

W artykule przedstawiono charakterystykę wybranych drogowych mostów składanych tj. mostu Baileya, MS 22-80, MS-54 i DMS-65. Wymienione konstrukcje były, w okresie po II wojnie światowej, modernizowane i kolejno używane przez ówczesne Wojsko Polskie. Obecnie pododdziały inżynieryjne Sił Zbrojnych RP posiadają na wyposażeniu konstrukcje DMS-65, która służy do szkolenia wojsk oraz do budowy i odbudowy...

article

Magnetic, transport and electronic properties of SmNi4Si compound

M. Falkowski, M. Pugaczowa-Michalska, A. Kowalczyk

Journal of Alloys and Compounds > 2013 > 577 > Complete > 19-24

The polycrystalline sample of SmNi ₄ Si was investigated by means of powder X-ray diffraction, magnetic susceptibility, magnetization, electrical resistivity and specific heat measurements. This compound crystallizes in the hexagonal CaCu ₅ -type structure (space group P6/mmm) and orders magnetically at T _C =14.9K. The magnetization, electrical resistivity and specific heat...

article

Magnetic, thermodynamic and transport properties at the first and second order magnetic phase transitions in Dy5Si3 compound

M. Falkowski, A. Kowalczyk, T. Toliński

Journal of Magnetism and Magnetic Materials > 2013 > 331 > Complete > 144-150

We present extended studies including the dc and ac magnetic susceptibility, magnetization, specific heat, electrical resistivity and magnetoresistivity measurements for the Dy ₅ Si ₃ compound with the hexagonal Mn ₅ Si ₃ -type structure. The results indicate that this compound orders antiferromagnetically below T _N =137K. The magnetic properties of Dy ₅...

article

Wawrzynek wilczełyko - krzew zwiastujący wiosnę

M. Falkowski

Salamandra:Magazyn Przyrodniczy > 2013 > 1

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INFONA - science communication portal

Search results for: M. Falkowski

The Importance of Consistent Global Forest Aboveground Biomass Product Validation

Inhomogeneous Superconducting Behaviour in $$\hbox {La}_{5}\hbox {Ni}_{2}\hbox {Si}_{3}$$ La 5 Ni 2 Si 3

Thermal and electron transport properties of Ce2Ni3Ge5 and Ce3NiGe2: Example of Kondo behavior in the presence of the crystalline field effect

The installation of the anti-missile shield in Poland –an opportunity, a threat or a challenge?

Spór o przyszłość Puszczy Białowieskiej: mity i fakty. Głos w dyskusji

Spór o przyszłość Puszczy BIałowieskiej: mity i fakty. Głos w dyskusji

Puszcza Białowieska - obiekt światowego dziedzictwa UNESCO - priorytety ochronne

Effect of La substitution on thermopower in Kondo lattice CeNiAl4

Thermal Conductivity of Ce₂Ru₃Ga₉ Compound

Plan zadań ochronnych dla obszaru Natura 2000 Dąbrowy Ceranowskie PLH140024 w świetle gospodarki leśnej

Szata roślinna rezerwatu Mierzwice (Nadleśnictwo Sarnaki) i jej ochrona

Crystalline field effect and magnetic ordering in the heavy fermion Kondo lattice Ce6Pd12In5

Thermal conductivity and Lorenz number of the Ce1−xLaxNiAl4 Kondo alloys

Magnetic Properties and Magnetocaloric Effect of DyNi_{4}Si

Thermopower of Ce1–xLaxCu4Al in applied magnetic fields

Non-Fermi Liquid Behaviour in the Heavy-Fermion Kondo Lattice Ce₂Rh₃Al₉

Konstrukcje drogowych mostów składanych

Magnetic, transport and electronic properties of SmNi4Si compound

Magnetic, thermodynamic and transport properties at the first and second order magnetic phase transitions in Dy5Si3 compound

Wawrzynek wilczełyko - krzew zwiastujący wiosnę

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