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Tytuł:
Theoretical study of ferroelectric triglycine sulphate (TGS) crystal in external electric fields
Autorzy:
Upadhyay, T. Ch.
Nautiyal, A.
Powiązania:
https://bibliotekanauki.pl/articles/412113.pdf
Data publikacji:
2013
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
ferroelectric
Green's functions
anharmonic
dielectric constant
loss tangent
coustic attenuation
Opis:
A modified two sub-lattice pseudospin-lattice coupled mode model of Mitsui et al [Phys. Rev., 111 (1958) 1259] by adding third, fourth order phonon anharmonic interaction and external electric field terms has been applied to ferroelectric triglycine sulphate crystal. Electric field dependence of ferroelectric, dielectric and acoustical properties has been studied. With the help of double time temperature dependent Green’s function method, expressions for shift, width, soft mode frequency, dielectric constant, loss tangent and acoustic attenuation have been derived. Numerically calculations have been made and results have been compared with experimental data reported by Bye et al [Ferroelectrics 4 (1974) 243] and Shreekumar et al [Ferroelectrics 160 (1994) 23] for TGS crystal and a good agreement has been observed.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2013, 6; 54-65
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Intuicja warunkiem dobrego dowodzenia
Autorzy:
Rogers Ch. T.
Powiązania:
Przegląd Informacyjno Dokumentacyjny/ Centralny Ośrodek Naukowej Informacji Wojskowej Centralny Ośrodek Naukowej Informacji Wojskowej, 1995, nr 4, s. 37-47
Współwytwórcy:
Czernohorski, Gerard. Opracowanie
Data publikacji:
1995
Tematy:
Dowodzenie
Podejmowanie decyzji
Opis:
Oprac. art. Intuition an imperative of command zamieszcz. w Military Review - 1994, nr 3, s. 38-50.
Dostawca treści:
Bibliografia CBW
Artykuł
Tytuł:
Collisional Broadening of the J=7 ⇐ 6 Transition of t-Butyl Cyanide by CH$\text{}_{3}$CN, OCS, CO$\text{}_{2}$ and Helium
Autorzy:
Gierszal, S.
Galica, J.
Miś-Kuźmińska, E.
Powiązania:
https://bibliotekanauki.pl/articles/1920724.pdf
Data publikacji:
1992-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
33.70.Jg
Opis:
Experimental studies of the broadening of the absorption line J = 6 ⇒ 7 of (CH$\text{}_{3}$)$\text{}_{3}$CCN due to collisions with the foreign perturbers He, CO$\text{}_{2}$, OCS, and CH$\text{}_{3}$CN have been carried out. The magnitude of the broadening coefficients reflects the type of interactions occurring in the molecular collisions. It has been concluded that the dipole-dipole and dipole-quadrupole interactions are predominant in the (CH$\text{}_{3}$)$\text{}_{3}$CCN admixed with CH$\text{}_{3}$CN and OCS. In the collisions between (CH$\text{}_{3}$)$\text{}_{3}$CCN and CO$\text{}_{2}$ the dipole-quadrupole interactions are present whereas the He perturbed by (CH$\text{}_{3}$)$\text{}_{3}$CCN exhibits dispersive type of interactions.
Źródło:
Acta Physica Polonica A; 1992, 81, 6; 613-617
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Capreä i Roma
Autorzy:
Kraszewski, Józef Ignacy
Data publikacji:
2015-12-01
Wydawca:
Fundacja Nowoczesna Polska
Tematy:
Epika
Powieść
Pozytywizm
Opis:
Publikacja zrealizowana w ramach projektu Wolne Lektury (http://wolnelektury.pl) na podstawie tekstu dostępnego w serwisie Wikiźródła (http://pl.wikisource.org). Redakcję techniczną wykonał Wojciech Kotwica, natomiast korektę utworu ze źródłem wikiskrybowie w ramach projektu Wikiźródła. Dofinansowano ze środków Ministra Kultury i Dziedzictwa Narodowego.
Źródło:
Józef Ignacy Kraszewski, Capreä i Roma: obrazy z piérwszego wieku: 4ry tomy we 2ch, T. 1, wyd. J. Zawadzki (nakł., druk.), Wilno 1860.
Dostawca treści:
Wolne Lektury
Książka
Tytuł:
Capreä i Roma, tom drugi
Autorzy:
Kraszewski, Józef Ignacy
Data publikacji:
2014-06-03
Wydawca:
Fundacja Nowoczesna Polska
Tematy:
Epika
Powieść
Pozytywizm
Opis:
Publikacja zrealizowana w ramach projektu Wolne Lektury (http://wolnelektury.pl) na podstawie tekstu dostępnego w serwisie Wikiźródła (http://pl.wikisource.org). Redakcję techniczną wykonał Wojciech Kotwica, natomiast korektę utworu ze źródłem wikiskrybowie w ramach projektu Wikiźródła. Dofinansowano ze środków Ministra Kultury i Dziedzictwa Narodowego.
Źródło:
Józef Ignacy Kraszewski, Capreä i Roma: obrazy z piérwszego wieku: 4ry tomy we 2ch, T. 2, wyd. J. Zawadzki (nakł., druk.), Wilno 1860.
Dostawca treści:
Wolne Lektury
Książka
Tytuł:
Capreä i Roma, tom pierwszy
Autorzy:
Kraszewski, Józef Ignacy
Data publikacji:
2014-06-03
Wydawca:
Fundacja Nowoczesna Polska
Tematy:
Epika
Powieść
Pozytywizm
Opis:
Publikacja zrealizowana w ramach projektu Wolne Lektury (http://wolnelektury.pl) na podstawie tekstu dostępnego w serwisie Wikiźródła (http://pl.wikisource.org). Redakcję techniczną wykonał Wojciech Kotwica, natomiast korektę utworu ze źródłem wikiskrybowie w ramach projektu Wikiźródła. Dofinansowano ze środków Ministra Kultury i Dziedzictwa Narodowego.
Źródło:
Józef Ignacy Kraszewski, Capreä i Roma: obrazy z piérwszego wieku: 4ry tomy we 2ch, T. 1, wyd. J. Zawadzki (nakł., druk.), Wilno 1860.
Dostawca treści:
Wolne Lektury
Książka
Tytuł:
Spin-Orbit Coupling for f-Electrons in a Crystalline Field
Autorzy:
Lulek, T.
Powiązania:
https://bibliotekanauki.pl/articles/1929779.pdf
Data publikacji:
1993-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.70.Ch
Opis:
The notion of a spin-orbit interaction arises from consideration of dynamics of multielectron atoms, i.e. systems of N electrons in a spherical potential. This notion is essentially a single-particle one. We sketch its origin as a second-order correction when Dirac four-component wave equations for an electron in external electromagnetic fields are simplified to the two-component Pauli spinors. The constraints in spinorial degrees of freedom consist, roughly speaking, in neglecting the small component of the electron four-function. The spin-orbit interaction term serves to compensate effects of the small component. The crystalline field induces some deviations from spherical symmetry of an isolated atom, which yields some modifications of the spherical form of the spin-orbit interaction operator. These modifications can be described in terms of a number of tensor operators adapted to appropriate chains of subgroups of the spherical symmetry group. We present a classification of independent tensor operators and discuss the relevant parameters for f-ions.
Źródło:
Acta Physica Polonica A; 1993, 84, 5; 867-873
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A possible role of chitin in the pathogenesis of asthma and allergy
Autorzy:
Brinchmann, B.Ch.
Bayat, M.
Brogger, T.
Muttuvelu, D.V.
Tjonneland, A.
Sigsgaard, T.
Powiązania:
https://bibliotekanauki.pl/articles/51618.pdf
Data publikacji:
2011
Wydawca:
Instytut Medycyny Wsi
Źródło:
Annals of Agricultural and Environmental Medicine; 2011, 18, 1
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Aboveground biomass and vertical distribution of crown for Taiwan red cypress 20 years after thinning
Autorzy:
Yen, T.-M.
Lee, J.-S.
Li, Ch.-L.
Chen, Y.-T.
Powiązania:
https://bibliotekanauki.pl/articles/41445.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Opis:
The aim of this study was to analyze the influence of thinning on the different growth stages of the Taiwan red cypress (Chamaecyparis formosensis Matsum) on the aboveground biomass allocation patterns and vertical distribution of foliage and branch biomass at the tree level. Although numerous studies in various fields have focused on the influence of thinning effects for Taiwan red cypress, few have assessed the aboveground biomass allocation of different growth stages, or conducted a long-term thinning observation. In this study, we examined 3 even-aged plantations in central Taiwan. In 1982, 3 stands, at ages 7, 15, 21 years, simultaneously began thinning trials. A thinning study was conducted once 20 years ago, and we assessed the long-term effects. The effects of thinning in each of the stands were analyzed and compared at the tree level 20 years later. Each component of the aboveground biomass (foliage, branches, and boles) increased with the thinning intensity, regardless of the age category of the trees; however, the crown mass/ aboveground tree mass appeared the same for each tree age category, regardless of the thinning intensity. We inferred that this phenomenon might result from the same proportional increase of crown mass and aboveground tree mass as the thinning intensity was increased. An allometric function was used to quantify the vertical distribution of the foliage and branch biomass; the results showed an increase in the accumulation of the branch biomass at lower heights following thinning, and the same trend was apparent in all 3 plantations.
Źródło:
Dendrobiology; 2013, 70
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
M. Chołodecki, A. Piszcz, T. Skoczny (red.), Prawo pocztowe. Komentarz, Wydawnictwo C.H. Beck, Warszawa 2018, ss. 1057
Autorzy:
Piątek, Stanisław
Powiązania:
https://bibliotekanauki.pl/articles/2167532.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Warszawski. Wydawnictwo Naukowe Wydziału Zarządzania
Źródło:
internetowy Kwartalnik Antymonopolowy i Regulacyjny; 2019, 8, 3; 114-116
2299-5749
Pojawia się w:
internetowy Kwartalnik Antymonopolowy i Regulacyjny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diffraction from $WS_2$ and MoS_2 Nanotubes
Autorzy:
Damnjanović, M.
Vuković, T.
Milošević, I.
Powiązania:
https://bibliotekanauki.pl/articles/1503023.pdf
Data publikacji:
2011-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.46.Km
78.67.Ch
68.37.Yz
Opis:
We present a symmetry based analysis of diffraction intensities of transition metal dichalcogenide nanotubes. Obtained results point out specific features of the intensity distribution that are related to group parameters. It is possible to read out all the group parameters from diffraction patterns, and therefore to characterize nanotube, since symmetry group uniquely determines the chiralty indices.
Źródło:
Acta Physica Polonica A; 2011, 120, 2; 224-226
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Muon Spin Rotation Studies of Doping in High-T$\text{}_{c}$ Superconductors
Autorzy:
Niedermayer, Ch.
Powiązania:
https://bibliotekanauki.pl/articles/2011019.pdf
Data publikacji:
1999-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
74.25.Ha
74.62.Dh
76.75.+i
Opis:
Muon spin rotation studies on high temperature superconducting cuprates will be reviewed. After an introduction to the technique, studies on the superfluid density will be described and the universal variation of the superfluid density n$\text{}_{s}$ as a function of p will be presented. Important exceptions will be discussed, such as the YBa$\text{}_{2}$Cu$\text{}_{3}$O$\text{}_{7-δ}$ system, where, besides the intrinsically superconducting CuO$\text{}_{2}$ planes, an interlayer may be metallised (here the CuO chains) which consequently contributes to a significant enhancement in superfluid density and associated improvement in technologically interesting properties such as flux pinning and critical current density. Evidence for an unconventional pairing state, possibly with d-wave symmetry, is presented from studies of the rapid suppression of superfluid density due to the substitution of structural inhomogeneities (such as Zn) that introduce strong scattering centers within the CuO$\text{}_{2}$ planes. Finally, the phase diagram of the antiferromagnetic correlations and, in particular, their coexistence with the superconducting state, will be discussed in terms of muon spin rotation experiments in zero external magnetic field.
Źródło:
Acta Physica Polonica A; 1999, 96, 2; 213-227
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multiferroic Cobalt Ferrite-Lead Iron Tungstate Composites
Autorzy:
Kulawik, J.
Szwagierczak, D.
Guzdek, P.
Powiązania:
https://bibliotekanauki.pl/articles/1490917.pdf
Data publikacji:
2012-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.50.-y
75.60.Ej
75.85.+t
77.22.Ch
Opis:
The paper presents dielectric, magnetic and magnetoelectric properties of multiferroic bulk composites based on $CoFe_2O_4$ ferrite and $Pb(Fe_{2//3}W_{1//3})O_3$ relaxor. X-ray diffraction analysis and scanning electron microscopy observations of ceramic samples revealed two-phase composition and fine grained microstructure with uniformly distributed ferromagnetic and ferroelectric phases. Dielectric permittivity measured in a temperature range 218-773 K at frequencies of 10 Hz-2 MHz exhibits high and broad maxima attributed to dielectric relaxation. The hysteresis determined in a temperature range 4-393 K for magnetic field changing from - 80 kOe to 80 kOe is typical of hard magnetic materials. Saturation magnetizations and coercivities were found to decrease with increasing temperature. The courses of zero field cooled and field cooled magnetization versus temperature curves measured in the temperature range 4-393 K imply spin glass behavior of the ferrite and antiferromagnetic transition of the relaxor at low temperatures. The ferrite-relaxor composite shows high magnetoelectric voltage coefficient which distinctly increases with increasing frequency of ac magnetic field and is slightly higher for higher ac and dc magnetic fields.
Źródło:
Acta Physica Polonica A; 2012, 121, 1; 122-124
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Protective role of curcumin in maximal electroshock induced seizures, memory impairment and neurotransmitters in rat brain
Autorzy:
Jithendra, Ch.
Murthy, T.E.G.K.
Upadyay, L.
Powiązania:
https://bibliotekanauki.pl/articles/3067.pdf
Data publikacji:
2008
Wydawca:
Instytut Medycyny Wsi
Źródło:
Journal of Pre-Clinical and Clinical Research; 2008, 02, 1
1898-2395
Pojawia się w:
Journal of Pre-Clinical and Clinical Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magneto-Transport Characterization of Four-Arm Nanostructure Based on Ferromagnetic (Ga,Mn)As
Autorzy:
Andrearczyk, T.
Wosiński, T.
Figielski, T.
Mąkosa, A.
Tkaczyk, Z.
Łusakowska, E.
Wróbel, J.
Sadowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/1811912.pdf
Data publikacji:
2008-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
73.50.Jt
75.50.Pp
75.30.Gw
75.60.Ch
Opis:
We report on results of magneto-transport measurements performed on four-arm nanostructure fabricated from p-type ferromagnetic $Ga_{0.92}Mn_{0.08}As$ layer. The results reveal hysteresis-like behaviors of low field magnetoresistance. We interpret the magnetoresistance in terms of domain walls, which are expected to be trapped inside the nanostructure at some particular positions and which contribute to the total resistance.
Źródło:
Acta Physica Polonica A; 2008, 114, 5; 1049-1054
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geomechanical aspects of hydraulic fracture propagation in the Lublin shale gas field in Poland
Autorzy:
Dhital, Ch.
Knez, D.
Śliwa, T.
Powiązania:
https://bibliotekanauki.pl/articles/299235.pdf
Data publikacji:
2015
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
shale gas
hydraulic fracture simulation
Opis:
The recent boom in shale gas exploration around the world has sparked a paradigm shift in energy security in many countries in the world. With the successful exploration of shale gas production in the United State’s, many operators are trying to replicate the success in other parts of the world specifically in European countries where the presence of organic rich shale deposits have signaled a promising investment for the recovery of shale gas. Perspective studies for the Polish shale gas field in Poland have been ongoing. One part of this project is the comparison of hydraulic fracture thickness between the U.S shale gas field and Polish for better and effective design and modeling of reservoirs for the optimal exploration and recovery of shale gas. Successful production of natural gas from Polish basins requires a hydraulic fracture stimulation to unlock the gas trapped in the shales coupled with a geologic analysis of the shale rocks.
Źródło:
AGH Drilling, Oil, Gas; 2015, 32, 4; 703-711
2299-4157
2300-7052
Pojawia się w:
AGH Drilling, Oil, Gas
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bistability of (Ga,Mn)As Ferromagnetic Nanostructures Due to the Domain Walls Switching
Autorzy:
Andrearczyk, T.
Wosiński, T.
Mąkosa, A.
Figielski, T.
Wróbel, J.
Sadowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/1791342.pdf
Data publikacji:
2009-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
73.50.Jt
75.50.Pp
75.30.Gw
75.60.Ch
85.75.-d
Opis:
We designed and investigated four-arm nanostructures, composed of two perpendicularly crossed stripes, fabricated from ferromagnetic (Ga,Mn)As layer by means of electron-beam lithography patterning and chemical etching. The nanostructures exhibit a bistable resistance behavior resulting from two configurations of magnetic domain walls in the central part of the structures. We demonstrate a possibility of switching between two stable resistance states in zero magnetic field by applying a pulse of either weak magnetic field or electric current through the structure.
Źródło:
Acta Physica Polonica A; 2009, 116, 5; 901-903
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electric relaxation in Nb₆VSb₃O₂₅-ceramics
Autorzy:
Groń, T.
Filipek, E.
Piz, M.
Kukuła, Z.
Pawlus, S.
Powiązania:
https://bibliotekanauki.pl/articles/1070621.pdf
Data publikacji:
2016-03
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
77.22.Ch
77.22.Gm
77.84.Bw
Opis:
Broadband dielectric spectroscopy measurements of Nb₆VSb₃O₂₅ showed that in both the real (ε') and imaginary (ε'') components of permittivity there is visible relaxation process strongly obscured by dc conductivity. Application of the electric modulus representation of the data enables to study temperature evolution of this relaxation together with conductivity relaxation. It was showed that the activation energies for both processes are close. Low-frequency loss tangent increases strongly with temperature, suggesting that in the compound under study additional energy losses are associated with the conduction of electric current, as determined by the Joule-Lenz law.
Źródło:
Acta Physica Polonica A; 2016, 129, 3; 355-358
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magnetocrystalline Anisotropy of Tb$\text{}_{1.1}$(FeCo)$\text{}_{11}$Ti
Autorzy:
Ivanova, T. I.
Pankratov, N. Yu.
Pastushenkov, Yu. G.
Skokov, K. P.
Powiązania:
https://bibliotekanauki.pl/articles/2013699.pdf
Data publikacji:
2000-05
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.60.Ch
Opis:
The Tb$\text{}_{1.1}$Fe$\text{}_{11-x}$Co$\text{}_{x}$Ti (x = 0, 1, 2, 3, 4) compounds with the ThMn$\text{}_{12}$-type structure were studied by using the torque and magnetization measurements in order to investigate temperature and composition behavior of the magnetocrystalline anisotropy. The Tb$\text{}_{1.1}$(FeCo)$\text{}_{11}$Ti single crystals demonstrated spin reorientation transition from easy axis to easy plane with the decrease in temperature. The substitution of Co for Fe produces an enhancement of the Curie temperatures, decreases temperatures of spin reorientation transition and appearance of canted structure.
Źródło:
Acta Physica Polonica A; 2000, 97, 5; 847-850
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magnetic Topological Structures in Multiferroics
Autorzy:
Gareeva, Z.
Zvezdin, K.
Popkov, A.
Zvezdin, A.
Powiązania:
https://bibliotekanauki.pl/articles/1030690.pdf
Data publikacji:
2018-03
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.85.+t
75.50.Ee
75.30.Fv
75.50.Gg
75.60.Ch
Opis:
In this article we focus on impact of micromagnetic structures on magnetoelectricity of multiferroics. We discuss physical mechanisms of magnetoelectric coupling considering domain walls and spin cycloids. We review the progress on multiferroic materials focusing on high temperature multiferroic: rare earth iron garnet and bismuth ferrite. We argue that topological structures play a pivotal role in multiferoics and show that electric control of magnetism can be carried out via spin spirals and domain walls. Magnetic domain walls produce ferroelectricity in rare earth iron garnets; transformations of spin cycloids release magnetoelectricity in bismuth ferrite. Ferroic orders couple via magnetic inhomogeneities, which shed new light on fundamental physics and applications.
Źródło:
Acta Physica Polonica A; 2018, 133, 3; 380-383
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A concurrent presentation of nonspecific colitis as well as likely myocarditis
Autorzy:
Heavener, T.
Jepson, M.
Bushe, B.
Thotakura, S.
Chiles, Ch.
Powiązania:
https://bibliotekanauki.pl/articles/1918592.pdf
Data publikacji:
2018-06-21
Wydawca:
Uniwersytet Medyczny w Białymstoku
Tematy:
colitis
myocarditis
ST segment elevation
coronary vasospasm
Opis:
An ST-segment elevation myocardial infarction represents a time-sensitive cardiac pathology with utmost importance placed upon timely coronary angiography with percutaneous coronary intervention. While emphasis is placed on atherosclerotic or thrombotic coronary occlusion, it is important to recognize other etiologies which may present in a similar fashion. This case demonstrates a 71-year-old female patient with prior coronary artery disease and stenting who presented with acute abdominal pain and elevated cardiac biomarkers as well as ST-segment elevation on initial EKG. Coronary angiography revealed only mild to moderate coronary lesions and patent stents while echocardiography was essential unchanged from prior evaluation. Computed tomography of the abdomen would show findings suggestive of infectious colitis and empiric antibiotics led to full resolution of symptoms. While no definitive cause for her cardiac manifestations was discovered, the authors propose coronary vasospasm or myo-pericarditis as likely etiologies in response to an overwhelming inflammatory state. The case underscores the importance of formulating a comprehensive differential diagnosis during the initial workup of a ST-segment elevation myocardial infarction.
Źródło:
Progress in Health Sciences; 2018, 8(1); 225-230
2083-1617
Pojawia się w:
Progress in Health Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Establishment of feline in-house reference intervals for hematologic and biochemical parameters and potential age-related differences
Autorzy:
Lin, T.L.
Chung, S.H.
Sung, C.H.
Yeh, S.Y.
Cheng, T.L.
Chou, C.C.
Powiązania:
https://bibliotekanauki.pl/articles/2087480.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
feline
reference interval
age
transference study
Źródło:
Polish Journal of Veterinary Sciences; 2019, 3; 599-608
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hitler i Stalin : żywoty równoległe. T. 2
Autorzy:
Bullock, Allan L. Ch.
Współwytwórcy:
Malinowski, Ludwik. Recenzja
Habielski Rafał. Recenzja
Lipska, Magdalena. Tłumaczenie
Mianowski, Jan. Tłumaczenie
Rudowski, Marek. Tłumaczenie
Data publikacji:
1994
Wydawca:
Warszawa : Państwowy Instytut Wydawniczy
Tematy:
Hitler, Adolf (1889-1945)
Opis:
Oryg.: "Hitler and Stalin : parallel lives".
Bibliogr. s. 472-[488].
Stalin i Hitler.
Dostawca treści:
Bibliografia CBW
Książka
Tytuł:
An assessment of cleaning mechanisms driven by power ultrasound using electrochemistry and highspeed imaging techniques
Autorzy:
Offin, D.
Vian, Ch.
Birkin, P.
Leighton, T.
Powiązania:
https://bibliotekanauki.pl/articles/331598.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Akustyczne
Tematy:
electrochemistry
cleaning mechanisms
high-speed imaging techniques
Opis:
The cleaning of a surface is monitored in real time using a number of physical measurements. In particular an electrochemically inactive material is removed from an electrode while the electrode is able to detect a redox system in the bulk liquid. The removal of the material from the surface is monitored as an increased Faradaic current at the electrode surface. This signal is used to assess the ability of the cleaning method employed, in this case the application of power ultrasound to the system, as a function of the position of the electrode with respect to the sound source. It is shown that, depending on the conditions employed, surface cleaning is driven by different mechanisms. In order to validate these findings highspeed imaging of the system was undertaken and the results correlated with the electrochemical data. In addition a number of novel electrodes were also employed to assess the cleaning efficiency as a function of the electrode geometry employed. Implications for surface cleaning in the presence of power ultrasound are suggested.
Źródło:
Hydroacoustics; 2008, 11; 299-312
1642-1817
Pojawia się w:
Hydroacoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Morphology and Optical Properties of Laser-Assisted Chemical Vapour Deposited GaN
Autorzy:
Goldys, E. M.
Godlewski, M.
Tansley, T. L.
Powiązania:
https://bibliotekanauki.pl/articles/1969082.pdf
Data publikacji:
1998-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
68.55.-a
81.15.Gh
61.16.Ch
78.30.-j
Opis:
Properties of GaN epilayers grown by laser-assisted chemical vapour deposition are discussed. Good crystallinity and surface morphology of the films is demonstrated. Micro-Raman spectra are explained by scattering by small, randomly oriented cubic phase units present in the GaN film.
Źródło:
Acta Physica Polonica A; 1998, 94, 2; 331-335
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hitler i Stalin : żywoty równoległe. T. 1
Autorzy:
Bullock, Allan L. Ch.
Współwytwórcy:
Malinowski, Ludwik. Recenzja
Habielski Rafał. Recenzja
Mianowski, Jan. Tłumaczenie
Pastusiak, Feliks. Tłumaczenie
Data publikacji:
1994
Wydawca:
Warszawa : Państwowy Instytut Wydawniczy
Tematy:
Stalin, Józef (1878-1953)
Hitler, Adolf (1889-1945)
Opis:
Oryg.: "Hitler and Stalin : parallel lives".
Stalin i Hitler.
Dostawca treści:
Bibliografia CBW
Książka
Tytuł:
Application of Anisotropic Vector Preisach Model for Bulk Materials
Autorzy:
Frydrych, P.
Szewczyk, R.
Nowicki, M.
Charubin, T.
Powiązania:
https://bibliotekanauki.pl/articles/1032677.pdf
Data publikacji:
2017-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.60.-d
75.60.Ch
75.60.Nt
75.30.Gw
85.70.-w
Opis:
In this paper possibility of application two-dimensional vector Preisach model for bulk materials was investigated. Physical magnetization mechanisms in bulk cores and thin ribbons were analyzed. Model is based on collection of the Preisach planes which describe material state in different angles on rotation plane. Presented model exhibits good conformity with experimental data for bulk as well for ribbon shaped cores. Model includes anisotropy and describes not only mean magnetization vector, but also distribution of magnetic moments for different angles.
Źródło:
Acta Physica Polonica A; 2017, 131, 4; 618-620
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magnetization Reversal in Cobalt Nanocolumn Structures Obtained by Glancing Angle Deposition
Autorzy:
Buchta, K.
Schmidt, Ch.
Trykowski, G.
Biniak, S.
Kempiński, M.
Luciński, T.
Powiązania:
https://bibliotekanauki.pl/articles/1428548.pdf
Data publikacji:
2012-05
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.70.Ak
73.50.-h
73.61.-r
Opis:
An advanced deposition technique known as glancing angle deposition was used to fabricate randomly seeded magnetic cobalt columnar nanostructures. The existence of nanocolumns was confirmed by the cross-section scanning electron microscopy. The evolution in the magnetization reversal mechanism as a function of the film thickness was investigated. The coercivity $H_{C}$ and $M_{R}//M_{S}$ ratio (where $M_{R}$ and $M_{S}$ denote the remanent and saturation magnetization, respectively), derived from the magnetic hysteresis loops, are discussed as a function of the angle between the external magnetic field and the surface normal. The direction of the magnetization easy/hard axis and the columns inclination angle were determined on the basis of the angular dependences of the $H_{C}$ and the $M_{R}//M_{S}$. A crossover from the coherent rotation, based on the Stoner-Wohlfarth model, to the curling reversal mode was observed.
Źródło:
Acta Physica Polonica A; 2012, 121, 5-6; 1222-1224
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
STM/AFM Observations of Co/Cu Magnetic Multilayers
Autorzy:
Aleszkiewicz, M.
Kalinowski, R.
Czajka, R.
Polewska, W.
Wawro, A.
Baczewski, L. T.
Raułuszkiewicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/1955472.pdf
Data publikacji:
1997-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.16.Ch
68.65.+g
68.55.Jk
Opis:
UHV deposited magnetic Co/Cu multilayers were investigated by means of scanning tunneling microscopy (STM) and atomic force microscopy (AFM). Surface of the sample i.e. upper covering layer in "plane" configuration and individual sublayers in "cross-section" configuration were investigated. A possibility of structure characterization of metallic multilayers by STM and AFM in the cross-section configuration is demonstrated.
Źródło:
Acta Physica Polonica A; 1997, 91, 2; 311-314
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Excess parameter studies on tetrahydropyran with 1-hexanol at T = 298.15 to 318.15 K using Anton Paar
Autorzy:
Anil Kumar, K.
Srinivasu, Ch.
Powiązania:
https://bibliotekanauki.pl/articles/412142.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Sound velocity
Densities
Excess parameters
THP
1-Hexanol
Binary mixtures
Opis:
Sound velocity, densities of binary mixture of Tetrahydropyran (THP) with 1-hexanol has been measured over the entire range of composition at T = 298.15 to 318.15 K. The excess parameters viz., excess sound velocity, deviations in isentropic compressibility, excess molar volume, excess free length and excess acoustic impedance are deduced from experimental values and discussed intermolecular interactions present in the mixture. At the end all the parameters have been fitted to Redlich-Kister equation and their coefficients are obtained.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 17, 2; 114-124
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Colloidal crystal cladded microfiber for refractive index sensing
Autorzy:
Yan, H. T.
Zhao, X Y
Zhang, Ch.
Zhen, Z Q
Li, Q Z
Cao, J X
Xia, L X
Powiązania:
https://bibliotekanauki.pl/articles/174902.pdf
Data publikacji:
2014
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
microfibers
colloidal crystals
refractive index sensing
Opis:
We investigate the evanescent field of a microfiber wrapped by colloidal crystals. The microfiber has the diameter of about 1 μm that is drawn from a single-mode fiber with an alcohol lamp. The colloidal spheres are further attached to the microfiber through thermal evaporation, then they self-assemble to crystal-like structures. The 400 nm, 590 nm, and 710 nm-diameter SiO2 colloidal spheres are used, respectively. The spectral responses are studied theoretically and experimentally, and the results agree with each other. It is revealed that the evanescent field of a microfiber could be modulated by the photonic band-gap of colloidal crystals. This characteristic is very useful in refractive index sensing for liquids.
Źródło:
Optica Applicata; 2014, 44, 2; 309-315
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biomechanical study of the influence of the weight of equipment on selected trunk muscles
Autorzy:
Schulze, Ch.
Lindner, T.
Woitge, S.
Glass, A.
Fimze, S.
Mittelmeier, W.
Bader, R.
Powiązania:
https://bibliotekanauki.pl/articles/306939.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
activity
EMG
equipment
posture
aktywność
postawa
Opis:
Overexertion and pain of the musculoskeletal system may occur partly owing to load application by the equipment. Both the weight of equipment and the duration of loading are relevant. The aim of the present study was to examine the extent of loading and resultant strain in the trunk muscles. Therefore, the trunk posture of soldiers and muscular activity in reaction to different equipment components (helmet, load-carrying equipment, gun and backpack) were evaluated. Electromyography was performed and a visual assessment of body axis was conducted based on standardised planar images. Data indicate that the activity of the trunk muscles examined (latissimus dorsi, trapezius and pectoralis major) is dependent on the weight and distribution of the equipment components. Activity in the trapezius muscle, for instance, was doubled during specific load application. Moreover, the method of carrying the rifle had a significant influence on the activity of the trapezius muscle (one-sided decrease of activity by 50%). Subjects were able to stabilise the body axis in the coronal plane through increased muscle activity, however, in the sagittal plane a compensatory ventral inclination of the body was observed. Uneven load distribution can lead to an irregular strain on the musculoskeletal system.
Źródło:
Acta of Bioengineering and Biomechanics; 2013, 15, 3; 45-51
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hitler i Stalin : żywoty równoległe. T. 2
Autorzy:
Bullock, Allan L. Ch.
Współwytwórcy:
Malinowski, Ludwik. Recenzja
Habielski Rafał. Recenzja
Mianowski, Jan. Tłumaczenie
Lipska, Magdalena. Tłumaczenie
Rudowski, Marek. Tłumaczenie
Data publikacji:
1994
Wydawca:
Warszawa : Państwowy Instytut Wydawniczy
Tematy:
Stalin, Józef (1878-1953)
Hitler, Adolf (1889-1945)
Opis:
Oryg.: "Hitler and Stalin : parallel lives".
Stalin i Hitler.
Dostawca treści:
Bibliografia CBW
Książka
Tytuł:
Analiza właściwości mikromechanicznych i tribologicznych powłok nanokompozytowych nc-WC/a-C i Nc-WC/a-C:H
Analysis of micromechanical and tribological properties of nc-WC/a-C and nc-WC/a-C:H nanocomposite coatings
Autorzy:
Kot, M.
Moskalewicz, T.
Wendler, B.
Czyrska-Filemonowicz, A.
Rakowski, W.
Zimowski, S.
Powiązania:
https://bibliotekanauki.pl/articles/187994.pdf
Data publikacji:
2010
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
powłoki nanokompozytowe
twardość
test zarysowania
zużycie
nanocomposite coatings
hardness
scratch test
wear
Opis:
W publikacji zostały zaprezentowane wyniki badań mikromechanicznych oraz tribologicznych powłok nc-WC/a-C i nc-WC/a-C:H osadzonych poprzez rozpylanie magnetronowe na nieutwardzonym i utwardzonym powierzchniowo tlenem stopie Ti6Al4V. Obie powłoki są zbudowane z nanocząstek różnych węglików wolframu WC o wielkości 2-6 nm umieszczonych w amorficznej węglowej osnowie. Porównywano wpływ rodzaju osnowy węglowej – amorficznej (a:C) i amorficznej uwodornionej (a-C:H) oraz wpływ umocnienia podłoża przez utwardzenie tlenem na właściwości mikromechaniczne i tribologiczne układów z powłokami kompozytowymi. Twardość powłoki nc-WC/a-C wynosi 18,4 GPa, a powłoki nc-WC/a-C:H 14,1 GPa. Testy tribologiczne wykazały natomiast znacznie lepszą odporność na zużycie przez tarcie powłoki nc-WC/a-C:H niż powłoki nc-WC/a-C.
In the article, micromechanical and tribological properties of nanocomposite coatings nc-WC/a-C and nc-WC/a-C: H were presented. Coatings were deposited by magnetron sputtering on baseline and oxigen-hardened Ti6Al4V titanium alloy. Both coatings contain tungsten carbide nanoparticles nc-WC of different sizes 2 to 6 nm imbedded in an amorphous carbon matrix. The effect of carbon matrix – hydrogen free (a:C) and hydrogenated (a-C:H) and the influence of substrate strengthening on the mechanical properties of coating-substrate systems were tested. The Nc-WC/a-C coating has higher hardness 18.4 GPa than nc-WC/a-C:H - 14.1 GPa. It was established that the coating with hydrogenated carbon matrix has better wear resistance than the WC/a-C coating. For both systems with oxygen-hardened substrate, a low coefficient of friction 0.1 to 0.12 wear was measured.
Źródło:
Tribologia; 2010, 3; 135-143
0208-7774
Pojawia się w:
Tribologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pathogenesis and prevention of dysbaric osteonecrosis
Autorzy:
Kawashima, M.
Tamura, H.
Noro, Y.
Takao, K.
Kitano, M.
Lehner, Ch. E.
Taya, Y.
Mano, Y.
Tsunosue, T.
Powiązania:
https://bibliotekanauki.pl/articles/366585.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Medycyny i Techniki Hiperbarycznej
Tematy:
dysbaric osteonecrosis
pathogenesis
bone compartment syndrome
hypercoagulability
decompression sickness
bends
Opis:
Japanese diving fishermen are known to have a high prevalence of dysbaric osteonecrosis. Their typical dive practices are characterized by long exposure to high pressure and by repetitive diving. The etiology of dysbaric osteonecrosis still remains controversial. Because the development of dysbaric osteonecrosis may occur silently, the diver may be unaware of the actual ischemic event. Moreover, key etiologic evidence is often lost before the diver is examined. The early stage of dysbaric osteonecrosis was evaluated in four autopsy cases of divers who died of acute decompression sikness. Hypercoagulability of blood was present in these cases. Hypercoagulability of blood has also been observed in experimental rats after decompression. Dysbaric osteonecrosis has been experimentally induced in six sheep at the University of Wisconsin - Madison. These findings are reviewed by comparing dysbaric osteonecrosis in both divers and experimental animals. In conclusion, a bone compartment syndrome and hypercoagulability appear to be pathogenetic factors in dysbaric osteonecrosis.
Źródło:
Polish Hyperbaric Research; 2005, 3(12); 13-18
1734-7009
2084-0535
Pojawia się w:
Polish Hyperbaric Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Fluid-Like and Critical Behavior of the Isotropic-Nematic Transition Appearing in Linear and Non-linear Dielectric Studies
Autorzy:
Drozd-Rzoska, A.
Rzoska, S. J.
Zioło, J.
Powiązania:
https://bibliotekanauki.pl/articles/2014495.pdf
Data publikacji:
2000-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
64.70.Md
64.30.+t
77.22.Ch
Opis:
A short review of literature and the authors' experimental results for the pretransitional behavior in the isotropic phase of nematogens is given. The paper also presents new results of non-linear dielectric effect and dielectric permittivity measurements in the broad temperature range. Results obtained show significant advantages of non-linear dielectric effect and dielectric permittivity for studying pretransitional properties in liquid crystalline materials. The paper contains a comprehensive comparison of the experiment with predictions of the mean-field model and the fluid-like description. The presented analysis strongly supports the image of the isotropic phase as a complex liquid resulting from vicinity of the fluid-like, "nematic-isotropic", critical point.
Źródło:
Acta Physica Polonica A; 2000, 98, 5; 637-643
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diffusion of Potassium on the W(112) Plane Preadsorbed by Ni Atoms: Field Emission Current Fluctuations - Autocorrelation Study
Autorzy:
Biernat, T.
Błaszczyszyn, R.
Kleint, Ch.
Powiązania:
https://bibliotekanauki.pl/articles/2027391.pdf
Data publikacji:
2001-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
79.70.+q
68.37.Vj
68.43.Jk
05.40.Ca
Opis:
Diffusion of potassium adsorbate on the W(112) plane with preadsorbed nickel was investigated by means of the autocorrelation function of field emission current fluctuations. A comparison of the experimental autocorrelation function with that of a theoretical calculation by Gesley and Swanson gives the surface diffusion coefficient of potassium. From its temperature dependence the diffusion activation energy at several Ni pre-coverages for a constant potassium coverage (Θ$\text{}_{K}$=0.4) is derived. The dependence of the activation energy for potassium surface diffusion on the nickel coverage - first reduction and then an increase with increasing Ni coverage - is observed. This is in agreement with the results obtained from the spectral analysis of the field emission current fluctuations of the same system. The decrease is understood to be a result of the smoothing effect caused by Ni atoms on the W(112) plane.
Źródło:
Acta Physica Polonica A; 2001, 99, 6; 665-672
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Temperature and Frequency Dependence Electrical Properties of $Zn_{1-x}Ca_{x}O$ Nanoceramic
Autorzy:
Das, T.
Das, B.
Parashar, K.
Parashar, S.
Powiązania:
https://bibliotekanauki.pl/articles/1398349.pdf
Data publikacji:
2016-12
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.05.cP
68.37.xy
84.37.+q
72.80.Lc
77.22.Ch
Opis:
This work reports the temperature and frequency dependence electrical properties of Ca doped ZnO ($Zn_{1-x}Ca_{x}O$, x=0.01) nanoceramic synthesized by solid state reaction method. The X-ray spectra show that the synthesized powder has hexagonal wurtzite structure with space group P6₃mc. The average crystallite size decreases with Ca doping. The increase in oxygen positional parameter (u) indicates lattice distortion in the crystal structure. Doping with Ca caused a slight shift in the (101) plane peak towards lower diffraction angle. The formation of pores in field emission scanning electron microscopy micrograph may be due to the defect created by Ca substitution. The electrical property was investigated by impedance spectroscopy in the temperature range 300-500°C. The synthesized sample shows temperature dependence relaxation phenomena and negative temperature coefficient of resistance effects. Electrical conductivity ($σ_{ac}$) increases with increase in temperature as well as with frequency due to the drift mobility of electrons and hole by hopping conduction. Dielectric constant was found to decrease with increase in frequency and temperature. This decreases drastically in the magnitude of approximately < 10 times than the corresponding undoped one.
Źródło:
Acta Physica Polonica A; 2016, 130, 6; 1358-1362
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Specific Heat of (NH$\text{}_{2}$(CH$\text{}_{3}$)$\text{}_{2}$)$\text{}_{3}$Bi$\text{}_{2}$I$\text{}_{9}$
Autorzy:
Plackowski, T.
Włosewicz, D.
Tomaszewski, P. E.
Baran, J.
Marchewka, M. K.
Powiązania:
https://bibliotekanauki.pl/articles/1932127.pdf
Data publikacji:
1995-03
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
64.70.Kb
65.40.-f
Opis:
The specific heat of title compound was measured by adiabatic calorimeter in the temperature range 80-315 K. The phase transitions at about 304, 285 and 235 K were confirmed. A new structural phase transition at about 125 K was observed as well as new anomaly on differential scanning calorimetry (DSC) curve at about 318 K. The peculiar multiple character of C, anomalies may be explained in terms of phase transitions or intermediate phases induced by impurities. The specific heat data are in agreement with the independent DSC measurements and with preliminary X-ray studies.
Źródło:
Acta Physica Polonica A; 1995, 87, 3; 635-641
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Theoretical Studies of ESR Parameters and Local Lattice Structure of the Vanadate-Lithium-Borate Glasses
Autorzy:
Feng, W.
Zhao, M.
Li, T.
Zhang, X.
Xue, J.
Powiązania:
https://bibliotekanauki.pl/articles/1419845.pdf
Data publikacji:
2012-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.70.Ch
75.10.Dg
61.72.Bb
76.30.Fc
Opis:
Electron spin resonance spectral parameters of $V^{4+}$ ions in vanadate-lithium-borate glasses have been calculated by the crystal-field theory. The theoretical results are $g_{∥ }$ = 1.940, $g_{⊥}$ = 1.983 and $A_{∥ } = -175 \times 10^{-4} cm^{-1},$ $A_{⊥} = -65 \times 10^{-4} cm^{-1}$ which are good agreement with the experimental values ($g_{∥ }$ = 1.939(3), $g_{⊥}$ = 1.998(3) and $A_{∥ } = (170.6-176.4) \times 10^{-4} cm^{-1},$ $A_{⊥} = (61.3-71.4) \times 10^{-4} cm^{-1}$). In addition, the bond lengths of the local lattice structure are, respectively, $R_{∥ }$ = 1.5 Å and $R_{⊥}$ = 1.95 Å which have been shown to have a compressed tetrahedral geometry along the $C_4$ axis.
Źródło:
Acta Physica Polonica A; 2012, 122, 1; 167-169
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
STM/AFM Images and Tunneling Spectra of Nd$\text{}_{2-x}$Ce$\text{}_{x}$CuO$\text{}_{4-y}$ Single Crystals
Autorzy:
Susła, B.
Sadowski, W.
Klimczuk, T.
Czajka, R.
Powiązania:
https://bibliotekanauki.pl/articles/1964375.pdf
Data publikacji:
1997-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.16.Ch
74.72.Jt
68.35.Bs
Opis:
The results of the scanning tunneling microscopy and spectroscopy as well as atomic force microscopy measurements on the Nd$\text{}_{2-x}$Ce$\text{}_{x}$CuO$\text{}_{4-y}$ single crystals in ambient conditions are reported. Using the scanning tunneling microscopy we were able to modify the Nd$\text{}_{2-x}$Ce$\text{}_{x}$CuO$\text{}_{4-y}$ ab-plane in air under the conditions of sample bias voltage V$\text{}_{t}$=500 mV and set current I$\text{}_{s}$=0.3 nA. It is possible to prepare atomically flat and clean surfaces as well as to create new structures in a nanometer scale in these electron-doped materials. The similar processes were not observed during atomic force microscopy imaging.
Źródło:
Acta Physica Polonica A; 1997, 92, 1; 209-214
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnostics of a Hydrocarbon Plasma Jet Using the A$\text{}^{2}$Δ-X$\text{}^{2}$Π System of CH
Autorzy:
Koulidiati, J.
Czernichowski, A.
Beulens, J. J.
Schram, D. C.
Powiązania:
https://bibliotekanauki.pl/articles/1968960.pdf
Data publikacji:
1998-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
07.20.Dt
52.70.Kz
33.20.-t
Opis:
We study the intensity distribution of the A$\text{}^{2}$Δ-X$\text{}^{2}$Π system of CH molecule at 430 nm in a low pressure plasma jet. This system shows an overlap of vibrational bands with Δv=0. By comparing simulated and experimental emission spectra, we obtain rotational and vibrational temperatures using Boltzmann plots or some thermometer functions. The thermometer functions are the integrated intensities of line-like transitions composed of several rotational transitions. The result of the Boltzmann plots and the thermometer functions method that we propose are in good agreement.
Źródło:
Acta Physica Polonica A; 1998, 94, 1; 3-12
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Absorption of Thin ZnSe, ZnS and ZnS$\text{}_{x}$Se$\text{}_{1-x}$ Films under High Hydrostatic Pressure
Autorzy:
Griebl, E.
Schőtz, G.
Birzer, Ch.
Kerner, W.
Reisinger, T.
Hahn, B.
Gebhardt, W.
Powiązania:
https://bibliotekanauki.pl/articles/1934060.pdf
Data publikacji:
1995-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
73.61.Ga
71.35.+z
Opis:
We present absorption measurements on free-standing ZnSe, ZnS and ZnS$\text{}_{x}$Se$\text{}_{1-x}$ films (d = 0.4...2 μm) under hydrostatic pressure up to 15 GPa. The refraction index n(λ,P) of ZnS and ZnSe in the transparent region up to 800 nm and the pressure shift of the E0 absorption edge of ZnSe and some ZnS$\text{}_{x}$Se$\text{}_{1-x}$-compositions was investigated at 293 K. At 2 K free exciton states near the E$\text{}_{0-}$ and E$\text{}_{0}$ + Δ$\text{}_{0}$-gap are visible in absorption. Increase in the Rydberg energy under pressure was found, which is explained with k • p-theory in the framework of the hydrogen model.
Źródło:
Acta Physica Polonica A; 1995, 88, 5; 995-999
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geochemistry and Tectonic Environments of Aphibolites Bethampudi Anorthosite Complex, Khammam Schist Belt, Telangana, India
Autorzy:
Brahmaiah, T.
Ravi, Ch.
Basha, U. Imran
Prasad, K. S. Sai
Powiązania:
https://bibliotekanauki.pl/articles/1075430.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
E-MORB and Subduction zone
Geochemistry and Tectonic Environments
MORB
N-MORB
Tholeiitic
Opis:
The Bethampudi anorthosite complex is essentially a leucograbbro (gabboric anorthosite and anorthositic gabbro), anorthosites, amphibolites, and pegmatite occur as concordant or discordent bodies. This work involves detailed geological geochemical investigations of amphibolites so as to reveal their possible protolith. The field relaltions, major, trace and rare earth element compositions of ampbibolites suggest that they are petrogenetically related to anorthosites by fractional crystallisation. Protoliths of the amphibolites show a tholeiitic signature that prevails over the sub-alkaline nature and E-MORB affinities. They were generated from a depleted mantle surface with the influence of a subduction and within-plate components.
Źródło:
World Scientific News; 2019, 126; 65-87
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Christian EFING (red.), Ausbildungsvorbereitung im Deutschunterricht der Sekundarstufe I. Die sprachlich-Kommunikativen Facetten von Ausbildungsfähigkeit, (w:) Ch. Efing, B. Hufeisen, N. Janich (red.), Wissen-Kompetenz-TexT, T. 5, Peter Lang, Frankfurt a. M., 2013, 372 str.
Autorzy:
SZERSZEŃ, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/959991.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Warszawski. Wydział Lingwistyki Stosowanej
Źródło:
Lingwistyka Stosowana / Applied Linguistics / Angewandte Linguistik; 2015, 13; 128-130
2080-4814
Pojawia się w:
Lingwistyka Stosowana / Applied Linguistics / Angewandte Linguistik
Dostawca treści:
Biblioteka Nauki
Artykuł
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