Autor: Anderson, J. - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: FEM based analysis of wing wall to culvert connection
Autorzy:: Voitenko, P.
Anderson, J. B.
Tematy:: przepust
ściana skrzydłowa
analiza elementów skończonych
kryterium Mohra Coulomba
utwardzanie gruntu
ciśnienie gruntu
plaxis 3D
osiadanie nierównomierne
culvert
wing wall
finite element analysis
Mohr-Coulomb criterion
soil stabilization
earth pressure
non-uniform settlement; Pokaż więcej
Wydawca:: PWB MEDIA Zdziebłowski
Powiązania:: https://bibliotekanauki.pl/articles/129216.pdf Link otwiera się w nowym oknie
Opis:: As part of transportation systems, culverts are subjected to complex load conditions such as earth pressure and traffic live load. In addition, culverts may experience differential settlement of underlying soils, hydrostatic load, and aggradation/degradation scour. Combinations of these effects may cause crack formation or even structural failure. The objective of this paper is to study factors that lead to crack formation in the culvert-wing wall connection immediately after construction. Finite element models (FE) with Plaxis 3D software were used to analyze the stress distribution along the wing wall connection under different load scenarios and geometries. Mohr-Coulomb (MC) and Hardening soil (HS) non-linear material models were utilized. Tension stresses were occurred at the top of the wing wall as well as out of plane rotation away from the culvert, contributing to cracks as observed in the field.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Magnetic Susceptibility of Pb$\text{}_{1-x-y}$Sn$\text{}_{y}$Mn$\text{}_{x}$Se
Autorzy:: Górska, M.
Anderson, J.
Kowalczyk, L.
Tematy:: 75.20.Ck
75.30.Et; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1887157.pdf Link otwiera się w nowym oknie
Opis:: Magnetic susceptibility has been measured in Pb$\text{}_{1-x-y}$Sn$\text{}_{y}$Mn$\text{}_{x}$Se with x values up to 0.02 and y values up to 0.05. The measurements were carried out using a SQUID system over a temperature range from 5 to 250 K. The susceptibility followed the Curie-Weiss relation with a small paramagnetic Curie temperature that indicated a weak antiferromagnetic exchange interaction between Mn ions. We analyzed the results together with our previously published data on high-field magnetization in this material. A reasonable agreement of the exchange parameters obtained from the low-field susceptibility and high-field magnetization data was obtained.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Age determination of the African lion (Panthera leo)
Autorzy:: Anderson, J. L.
Austin, J. C.
Smuts, G. L.
Wydawca:: Wiley-Blackwell
Powiązania:: Journal of Zoology, Lond.
Dostawca treści:: RCIN - Repozytorium Cyfrowe Instytutów Naukowych

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Skocz do pozycji: 4.

Tytuł:: Magnetic Susceptibility of Sn$\text{}_{1-x}$Au$\text{}_{x}$Te
Autorzy:: Górska, M.
Anderson, J. R.
Peng, J. L.
Gołacki, Z.
Tematy:: 75.20.Ck
75.30.Et; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1929705.pdf Link otwiera się w nowym oknie
Opis:: The magnetic susceptibility of Bridgman-grown Sn$\text{}_{1-x}$Eu$\text{}_{x}$Te with nominal values of x up to 0.095 was measured over a temperature range from 2 to 385 K. The samples were p-type with hole concentrations up to 1.5 × 10$\text{}^{21}$ cm$\text{}^{-3}$. The susceptibility data above 50 K followed the Curie-Weiss relation with a small Curie temperature. At about 10 K a small cusp in susceptibility was observed in samples with the higher range of x values. The data indicate a presence of both antiferromagnetic and ferromagnetic exchange interactions, with some paramagnetic contributions from charged defects. There is also evidence of Eu going into the lattice both as Eu$\text{}^{2+}$ and Eu$\text{}^{3+}$ ions.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Magnetization and Susceptibility of Sn$\text{}_{1-x}$Gd$\text{}_{x}$Te
Autorzy:: Górska, M.
Anderson, J. R.
Green, S. M.
Golacki, Z.
Tematy:: 75.20.Ck
75.30.Et; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1890957.pdf Link otwiera się w nowym oknie
Opis:: The magnetization and magnetic susceptibility of Bridgman-grown Sn$\text{}_{1-x}$Gd$\text{}_{x}$Te with values of x up to 0.09 have been measured over a temperature range from 2 to 300 K and in magnetic fields up to 5.5 T. The magnetic susceptibility data followed the Curie-Weiss relation with a small Curie temperature that indicated a weak antiferromagnetic coupling among Gd ions. The magnetic field dependence of the magnetization was fitted to a modified Brillouin function with parameter values that agreed fairly well with those from Curie-Weiss plots. The value of the exchange parameter was larger than in Pb$\text{}_{1-x}$Gd$\text{}_{x}$Te. The samples were p-type with carrier concentrations up to 1.3 x 10$\text{}^{21}$ cm$\text{}^{-3}$. The ferromagnetic or spin-glass phase due to the RKKY interaction was not observed.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Magnetization and Susceptibility of Cd$\text{}_{1-x}$Co$\text{}_{x}$Se
Autorzy:: Górska, M.
Anderson, J. R.
Green, S. M.
Kido, G.
Giriat, W.
Tematy:: 75.20.Ck
75.30.Et; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1921706.pdf Link otwiera się w nowym oknie
Opis:: The magnetization and magnetic susceptibility of Bridgman-grown Cd$\text{}_{1-x}$Co$\text{}_{x}$Se with values of x up to 0.04 have been measured over a temperature range from 2 to 390 K and in magnetic fields up to 23 T. A pair-exchange value J/k$\text{}_{B}$ of about -3 K was obtained from the magnetic field dependence of the magnetization. This exchange is probably due to the next-nearest-neighbor interaction. The high-temperature susceptibility data indicated a presence of the Curie-Weiss like paramagnetism and the temperature independent Van Vleck type paramagnetism.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Magnetic Specific Heat of Pb$\text{}_{1-x}$Eu$\text{}_{x}$Te
Autorzy:: Górska, M.
Łusakowski, A.
Jędrzejczak, A.
Gołacki, Z.
Anderson, J. R.
Balci, H.
Tematy:: 71.70.-d
75.40.Cx; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/2038143.pdf Link otwiera się w nowym oknie
Opis:: The temperature dependence of the magnetic specific heat was studied experimentally and theoretically in the semimagnetic semiconductor Pb$\text{}_{1-x}$Eu$\text{}_{x}$Te for x=0.027 and x=0.073, over the temperature range from 0.5 K to 15 K, in magnetic fields up to 2 T. In zero magnetic field at about 2 K there was a broad maximum in the magnetic specific heat, which was much higher than that predicted by the model of superexchange interaction between nearest neighbors; the maximum values increased with magnetic field. The experimental data were analyzed in the framework of a model which takes into account the spin splitting of the ground state of a single Eu2+ ion in the presence of local lattice distortions in the Pb$\text{}_{1-x}$Eu$\text{}_{x}$Te mixed crystal. The model describes well the experimental data, especially for lower x-values, where the contribution from singlets dominates.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: High Field Magnetization of Sn$\text{}_{1-x}$Gd$\text{}_{x}$Te
Autorzy:: Górska, M.
Anderson, J. R.
Wolters, C.
Łusakowski, A.
Story, T.
Gołacki, Z.
Tematy:: 75.20.Ck
75.30.Et; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1969093.pdf Link otwiera się w nowym oknie
Opis:: The magnetization of p-type Sn$\text{}_{1-x}$Gd$\text{}_{x}$Te with x up to 0.045 and the hole concentration, p, varying from 2.7 to 8.3×10$\text{}^{20}$ cm$\text{}^{-3}$ has been measured in magnetic fields up to 27 T, at the temperatures 4.2 and 1.3 K. The data were fitted to a magnetization equation with single-ion and pair terms. From comparison of the exchange parameters determined from the high-field magnetization with those previously obtained from the high-temperature magnetic susceptibility it was found that in samples with p>5×10$\text{}^{20}$ cm$\text{}^{-3}$ the exchange was of a short-range type, while in samples with a lower carrier concentration the long-range exchange mechanism was observed.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Base pressure oscillations in a rectangular duct with an abrupt enlargement
Autorzy:: Grabitz, G.
Jungowski, W.M.
Meier, G.E.A.
Witczak, K.J.
Anderson, J.S.
Wydawca:: Polish Scientific Publishers IFTR
Powiązania:: Archives of Mechanics
Opis:: Od Vol. 53, issue 4/5 (2001) wyd: PAS. IFTR
333-684 pages ; 24 cm
Od Vol. 43, issue 1 (1991) wyd.: Polish Scientific Publishers = PWN
Od Vol. 50, issue 4 (1998) wyd.: Agencja Reklamowo-Wydawnicza A. Grzegorczyk
333-684 stron ; 24 cm
Dostawca treści:: RCIN - Repozytorium Cyfrowe Instytutów Naukowych

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Skocz do pozycji: 10.

Tytuł:: $Zn_{1-x}(Mn,Co)_xGeAs_2$ Ferromagnetic Semiconductor: Magnetic and Transport Properties
Autorzy:: Kilanski, L.
Gorska, M.
Domukhovski, V.
Dobrowolski, W.
Anderson, J.
Rotundu, C.
Varniavskii, S.
Marenkin, S.
Tematy:: 72.20.Fr
72.80.Ga
75.50.Pp
75.40.Cx; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1811937.pdf Link otwiera się w nowym oknie
Opis:: We present the studies of magnetic and transport properties of the bulk $Zn_{1-x}(Mn, Co)_xGeAs_2$ mixed crystals with 0.052 ≤ x ≤0.182 grown using direct fusion method. Magnetic investigations showed that for samples with x ≥ 0.078 we observed a behavior typical of ferromagnets, with the Curie temperatures $T_C$ ≥ 300 K. The observed ferromagnetism was probably connected with the spinodal decomposition of the Mn ions in the alloy. The transport studies including resistivity and Hall effect (at B=1.4 T) were performed. The samples showed p-type conductivity with semiconducting or metallic character, depending on the alloy composition. The Hall carrier concentration, p ≥ $10^{18} cm^{-3}$, was composition dependent.
Dostawca treści:: Biblioteka Nauki

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