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    Wyświetlanie 1-18 z 18
    Tytuł:
    Total Crystal Energy and Heat of Solution of Alkali Based Binary Alloys
    Autorzy:
    Gajjar, P. N.
    Thakore, B. Y.
    Jani, A. R.
    Powiązania:
    https://bibliotekanauki.pl/articles/2027355.pdf
    Data publikacji:
    2001-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    64.10.+h
    71.15.Hx
    Opis:
    A detailed study of the total crystal energy and heat of solution of ten alkali based alloys is made within the framework of the second order perturbation theory and employing the pseudo alloy atom model. Three different forms of the local field correction functions, viz. Harrison, Taylor, and Ichimaru and Utsumi, are used to incorporate the exchange and correlation effects while computing the band structure part of the total energy. Reasonable agreement with the experimental values of the total energy of pure components is found (corresponding to the concentration factor x=0 or 1). It is observed that for all the systems, for small impurity concentration factors, the alloys form very good homogeneous solid solutions. Also the interaction parameter Δ E/x(1-x) does not depend on x, whenever the difference in the atomic sizes of the two components making up the alloy is small.
    Źródło:
    Acta Physica Polonica A; 2001, 99, 5; 565-578
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Nonclassical Critical Behaviour and Low Temperature Anomalies in Ferroelectric DMACA as Described by Many-Sublattice Model
    Autorzy:
    Gałązka, M.
    Zieliński, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1399033.pdf
    Data publikacji:
    2013-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    64.10.+h
    64.60.-i
    64.60.Cn
    Opis:
    A model based on the crystallographic data on dimethylammonium nonachlorodiantimonate (DMACA) is constructed. Gradual orientational ordering of three inequivalent sublattices of the dimethylammonium cations is shown to be at the origin of the anomalous behaviour of the spontaneous polarisation in this material. A quantitative comparison with the experimental data reveals a temperature dependence of a coupling between two sublattices and a strong deformability of the underlying structure.
    Źródło:
    Acta Physica Polonica A; 2013, 124, 6; 1013-1019
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study of Order Parameters Coupling in Uniaxial Ferroelectrics on the Basis of Pyroelectric and Dilatometric Measurements
    Autorzy:
    Gałązka, M.
    Zieliński, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1538260.pdf
    Data publikacji:
    2010-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    64.10.+h
    64.60.Bd
    62.20.dq
    Opis:
    A method is devised of extracting the explicit form of the coupling between the primary and secondary order parameters with the use of experimental data and respecting classical and non-classical values of the effective critical exponents. The corresponding equation of state stems from the Ising model on a compressible lattice treated within the mean field approximation supplemented with terms ascertaining scaling invariance in the vicinity of the critical point. The theory is exemplified by the molecular ferroelectric crystals ($CH_{3}NH_{3})_{5}Bi_{2}Cl_{11}$ (MAPCB) and ($CH_{3}NH_{3})_{5}Bi_{2}Br_{11}$ (MAPBB).
    Źródło:
    Acta Physica Polonica A; 2010, 117, 4; 566-569
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Scattering properties of argon gas in the temperature range 87.3-120 K
    Autorzy:
    Al-Maaitah, I.
    Joudeh, B.
    Sandouqa, A.
    Ghassib, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/1065068.pdf
    Data publikacji:
    2016-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.25.Bi
    64.10.+h
    67.10.Fj
    Opis:
    A theoretical model, based on the Galitskii-Migdal-Feynman formalism, is introduced for determining the scattering properties of argon gas, especially the "effective" total, viscosity and average cross-sections. The effective phase shifts are used to compute the quantum second virial coefficient in the temperature range 87.3-120 K. The sole input is the Hartree-Fock dispersion (HFD-B3) potential. The thermophysical properties of the gas are then calculated. The results are in good agreement with experimental data.
    Źródło:
    Acta Physica Polonica A; 2016, 129, 6; 1131-1140
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analytic Equation of State and Thermodynamic Properties, for α-, β-, and γ-Si₃N₄ Based on Analytic Mean Field Approach
    Autorzy:
    Wang, L.
    Sun, J.
    Yang, W.
    Tian, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1812044.pdf
    Data publikacji:
    2008-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    64.10.+h
    65.40.-b
    61.66.Fn
    Opis:
    The analytic mean field potential approach is applied to α-, β-, and γ-Si₃N₄. The analytic expressions for the Helmholtz free energy, internal energy, and equation of state were derived. The formalism for the case of the Morse potential is used in this work. Its six potential parameters are determined through fitting the compression experimental data of α-, β-, and γ-Si₃N₄. The calculated compression curves of α-, β-, and γ-Si₃N₄ are in good agreement with the available experimental data. This suggests that the analytic mean field potential approach is a very useful approach to study the thermodynamic properties of Si₃N₄. Furthermore, we predict the variation of the free energy and internal energy with the molar volume at several higher temperatures and calculate the temperature dependence of the molar volume, bulk modulus, thermal expansion coefficient and isochoric heat capacity at zero pressure.
    Źródło:
    Acta Physica Polonica A; 2008, 114, 4; 807-818
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Semiempirical Method for Finding Thermal Characteristics of Simple Crystals
    Autorzy:
    Scharoch, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2038377.pdf
    Data publikacji:
    2004-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    65.40.-b
    64.10.+h
    31.15.Ar
    Opis:
    A method for ab initio (using density functional theory) study of thermal properties of crystalline solids, based on the quasiharmonic approximation, is briefly summarized. On that basis the semiempirical method is proposed which combines the ab initio calculation of the static total energy with the Einstein model of crystal vibration. The Murnaghan equation of states is used as an analytical model for the static total energy. An exponential form of the phonon energy versus volume dependence is introduced which was proved to perform very well. Two parameters appearing in the model are found by fitting to easily available experimental data (tabular or measured). The method then provides thermodynamic characteristics in a large range of temperatures and pressures. On the other hand, the corrections due to the zero-point vibration are provided to some first principles results, like lattice parameters or bulk modulus. An interesting outcome of the model is the pressure dependence of the overheating temperature, for relatively low pressures. Tests performed on the example of fcc aluminum show remarkably good agreement of the results with experimental data. Therefore the method offers a handy tool for fast analysis of thermodynamics of simple crystalline systems, omitting the first principles evaluation of the phonon energies.
    Źródło:
    Acta Physica Polonica A; 2004, 106, 4; 487-495
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Some Elastic Properties and Phase Transitions in Some Alkali Halides Using Interatomic Potential Model
    Autorzy:
    Yazar, H. R.
    Powiązania:
    https://bibliotekanauki.pl/articles/2046838.pdf
    Data publikacji:
    2006-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.55.Fv
    05.70.-a
    61.50.Ks
    64.10.+h
    Opis:
    We have predicted the phase transition pressure in some alkali halides using an interatomic potential approach based on rigid ion model. This potential form represents the composite form of the inverse power dependence and exponential dependence of the repulsive energy on interionic distance. Some thermoelastic properties such as second order elastic constants have been calculated using the same potential. The phase transition pressures (28.69 and 2.4 GPa) obtained by us for two alkali halides (NaCl and KCl) are in closer agreement with their corresponding experimental data (29.0 and 2.0 GPa). This approach is promising with respect to prediction of the phase transition pressure of other alkali halides as well.
    Źródło:
    Acta Physica Polonica A; 2006, 109, 6; 743-751
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electrical Characterization of Interdigitated Humidity Sensors Based on CNT Modified Calixarene Molecules
    Autorzy:
    Özbek, C.
    Culcular, E.
    Okur, S.
    Yılmaz, M.
    Kurt, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1400035.pdf
    Data publikacji:
    2013-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    66.30.je
    65.40.gp
    65.40.gk
    65.40.gd
    64.70.fm
    64.10.+h
    51.10.+y
    Opis:
    In this study, we report on the optimization and characterization of chloroform soluble calix[4]arene derivative as a humidity sensor based on electrical properties. Due to the fact that calix[4]arene molecules are nonconductive, we modified the calix[4]arene molecules with carbon nanotubes with electrostatic bond in order to increase the conductance of calix[4]arene molecule (5,11,17,23-tetra-ter-butyl-25,27-dehydrazinamidcarbonilmetoxy-26,28-dehydroxy-kalix[4]aren). Using photolithography technique, we fabricated interdigitated gold electrodes with 3 micrometers separation to investigate the electrical properties of carbon nanotubes modified calix[4]arene molecule where we used dropcast method to form a thin film of carbon nanotubes modified calix[4]arene molecule on the gold electrodes. Our reproducible experimental results indicated that the chloroform soluble carbon nanotubes modified calix[4]arene films have great potential for humidity sensing applications at room temperature operations.
    Źródło:
    Acta Physica Polonica A; 2013, 123, 2; 461-463
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Gas Sensing Properties of Carbon Nanotubes Modified with Calixarene Molecules Measured by QCM Techniques
    Autorzy:
    Mermer, Ö.
    Okur, S.
    Sümer, F.
    Özbek, C.
    Sayın, S.
    Yılmaz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1491414.pdf
    Data publikacji:
    2012-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    66.30.je
    65.40.gp
    65.40.gk
    65.40.gd
    64.70.fm
    64.10.+h
    51.10.+y
    Opis:
    This study focuses on the characterization and optimization of calixarene modified carbon nanotube thin films for gas detection. Calixarene molecules were synthesized individually by considering their functional groups to attract the gas. Calixarene modified carbon nanotube based sensors were fabricated using drop-casting method on a quartz crystal microbalance gold electrode. Carbon monoxide, carbondioxide, oxygen and dry air were used as active gases for adsorption process, while high-purity nitrogen gas was used for desorption process. The selectivity and sensitivity of calixarene modified carbon nanotube are investigated in detail. Our experimental results show that functional calixarene modified carbon nanotube coated quartz crystal microbalance sensors are very sensitive and selective to gas of $CO_2$ at room temperature operation.
    Źródło:
    Acta Physica Polonica A; 2012, 121, 1; 240-242
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Odor Adsorption Kinetics on Modified Textile Materials Using Quartz Microbalance Technique
    Autorzy:
    Sarıışık, M.
    Okur, S.
    Asma, Ş.
    Powiązania:
    https://bibliotekanauki.pl/articles/1491427.pdf
    Data publikacji:
    2012-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    66.30.je
    65.40.gp
    65.40.gk
    65.40.gd
    64.70.fm
    64.10.+h
    51.10.+y
    Opis:
    In this study, a functional product with aromatic oil and vitamins for use at aromatherapy and spa centers or personal care has been designed to improve life quality of users by using multifunctional products with good odor, moisturizing, relaxation, anti-aging effects. For this purpose, commercial berry berry oil was capsulated in β-cyclodextrin, and then applied to 100% cotton towel fabric. Quartz crystal microbalance sensors were used to investigate odor adsorption kinetics on modified textile materials for the first time. The frequency responses vs. time plot shows clear linear step responses to the change in the concentration of odor molecules coming from the container filled with berry berry applied textile. The results also reveal that $TiO_2$ coated quartz crystal microbalance sensors can be used as e-nose to sense odor from textile coated with berry berry oil containing β-cyclodextrin capsules.
    Źródło:
    Acta Physica Polonica A; 2012, 121, 1; 243-246
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study of a Mixed Hadronic-QGP System with Massive Particles
    Autorzy:
    Ghenam, L.
    El Djoudi, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1402384.pdf
    Data publikacji:
    2015-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    12.38.Mh
    12.39.Ba
    05.70.-a
    05.70.Ce
    05.70.Fh
    64.10.+h
    Opis:
    We consider a mixed system of hadronic and quark-gluon plasma (QGP) phases in a finite volume, and use a phenomenological approach with two phases matter equations of state to study the occurring deconfinement phase transition with varying temperature and/or chemical potential. We take into account massive particles in both phases, and calculate several physical quantities describing well the system at the phase transition. We probe the behaviour of these quantities, by examining their variations with temperature and volume at fixed chemical potential, as well as with chemical potential and volume at fixed temperature, in three dimensional plots, and obtain the finite size effects on the deconfinement phase transition.
    Źródło:
    Acta Physica Polonica A; 2015, 128, 2B; B-341-B-343
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stripe Phases in the Hubbard Model
    Autorzy:
    Góra, D.
    Rościszewski, K.
    Oleś, A. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2012901.pdf
    Data publikacji:
    2000-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    71.27.+a
    74.72.-h
    75.10.-b
    64.60.-i
    Opis:
    We investigate the magnetic and charge ordering in the stripe phases obtained while using correlated wave functions for finite 8×8 clusters described by the Hubbard model with extended hopping. Nonmagnetic vertical (01) site-centered domain walls and (11) bond-centered stripes are found for the parameters of La$\text{}_{2-x}$Sr$\text{}_{x}$CuO$\text{}_{4}$ and YBa$\text{}_{2}$Cu$\text{}_{3}$O$\text{}_{6+x}$, respectively, at doping δ=1/8. The obtained half-filled domain nonmagnetic walls reproduce the maxima observed in neutron scattering for La$\text{}_{2-x}$Sr$\text{}_{x}$CuO$\text{}_{4}$.
    Źródło:
    Acta Physica Polonica A; 2000, 97, 1; 225-228
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Charge Orderings and Phase Separations in Itinerant Fermion Systems at Half Filling
    Autorzy:
    Czart, W.
    Grzybowski, P.
    Nogala, M.
    Robaszkiewicz, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1426750.pdf
    Data publikacji:
    2012-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    71.10.Fd
    71.30.+h
    71.45.Lr
    64.75.Gh
    Opis:
    We analyse the ground state phase diagrams of the charge orderings in narrow band materials using two effective models: (1) the spinless fermion model (t - W) with repulsive intersite interaction ($W_{ij}$ > 0) and (2) the molecular crystal model with the coupling of electrons to intramolecular (crystal field) vibrations. We present results for the case of half filled bands for d = 2 square lattice. The calculations are performed within the (broken symmetry) Hartree-Fock approximation. The study takes into consideration the effects of frustrating next-nearest-neighbour hopping $(t_2)$ on the charge ordered states in these systems. We focus on the two cases: (i) homogeneous phases and phase separations involving checkerboard charge ordering with the nesting vector Q= (π,π) only and (ii) homogeneous phases and phase separations involving two types of charge ordering: (a) checkerboard charge ordering with the nesting vector Q = (π,π), and (b) collinear (CL) charge ordering with Q = (0,π) or Q = (π,0).
    Źródło:
    Acta Physica Polonica A; 2012, 121, 5-6; 1042-1044
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of Frustrating Hopping on Charge Ordered States in Itinerant Fermion Systems for Arbitrary Concentration in 2D Lattice
    Autorzy:
    Czart, W.
    Grzybowski, P.
    Nogala, M.
    Robaszkiewicz, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1431325.pdf
    Data publikacji:
    2012-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    71.10.Fd
    71.30.+h
    71.45.Lr
    64.75.Gh
    Opis:
    There is ongoing, intense, research in the field of electron charge orderings (CO) and charge density waves phenomena, due to experimental discovery of such phases in numerous important compounds. The aim of this work is to extend recent advances in the field by studying two simple effective paradigmatic models used to describe CO in narrow band materials i.e. (i) a model of correlated electrons: the so-called t-W model of spinless fermions with repulsive interaction W and (ii) the molecular crystal model with the coupling of electrons to intramolecular (crystal field) vibrations in the static limit. The finite temperature phase diagrams are evaluated at arbitrary carriers concentration for several representative cases. Our calculations are performed within the (broken symmetry) HFA for d=2 square lattice and arbitrary carriers concentration. In this contribution we focus on the effects of next-nearest-neighbor hopping on the CO states in these systems and the problem of phase separations involving checkerboard CO with the nesting vector Q=(π,π). The results we show here are an extension of our previous work on the subject.
    Źródło:
    Acta Physica Polonica A; 2012, 121, 4; 828-831
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Charge Ordering and Phase Separations in the Spinless Fermion Model with Repulsive Intersite Interaction
    Autorzy:
    Czart, W.
    Robaszkiewicz, S.
    Tobijaszewska, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1812286.pdf
    Data publikacji:
    2008-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    71.10.Fd
    71.30.+h
    71.45.Lr
    64.75.Gh
    Opis:
    We study a simple effective model for description of charge orderings in narrow band materials, i.e. the spinless fermion model with repulsive intersite interaction W. The analysis is concentrated on the problem of phase separations and the effects of next-nearest neighbor hopping $t_2$ on the charge ordered states in this system. The cases of d-dimensional (d≥2) hypercubic lattices are considered for arbitrary particle concentration (0 < n < 1). Within the broken symmetry Hartree-Fock approximation the phase diagrams as a function of W and n are evaluated for representative cases. The results for $t_2$ ≠ 0 are compared with those found for the case with nearest neighbor hopping only.
    Źródło:
    Acta Physica Polonica A; 2008, 114, 1; 129-134
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Charge Ordering and Phase Separations in the Molecular Crystal Model
    Autorzy:
    Czart, W.
    Grzybowski, P.
    Robaszkiewicz, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1537090.pdf
    Data publikacji:
    2010-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    71.10.Fd
    71.30.+h
    71.45.Lr
    64.75.Gh
    Opis:
    We analyse the ground state phase diagrams and thermodynamic properties of charge orderings in narrow band materials using the molecular crystal model in the static limit. We present results for the hypercubic lattices in dimensions d = 2 and d = ∞. We focus our study on the problem of phase separations involving charge orderings and the effects of next-nearest-neighbor hopping $(t_2)$ on the charge ordered states in these systems. The ground state phase diagrams are evaluated for a few representative cases. Results for the molecular crystal model are compared with those obtained previously for the spinless fermion model with repulsive intersite interaction W.
    Źródło:
    Acta Physica Polonica A; 2010, 118, 2; 369-372
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of the Vibroacoustic Climate Inside the Buses MAN SG242 Used in Public Transport Systems
    Autorzy:
    Damijan, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/1537389.pdf
    Data publikacji:
    2010-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    89.40.-a
    07.10.-h
    43.40.Lc
    07.64.+z
    Opis:
    A driver of a municipal transport bus is more liable to vibration-acoustic stimuli connected with the movement of the vehicle than a passenger. In literature on the subject noise and vibration exposures are categorised into passive (whereby passengers are exposed) and active (driver's or machine operator's exposure). Despite new technological solutions and attempts to improve the working conditions during the operation of vehicles, city bus drivers are still exposed to negative impacts of noise and vibrations, causing stress, increased fatigue and lead to numerous diseases. It is required, therefore, that the working conditions for drivers should be monitored on a regular basis. In order that they work safely, their working conditions should be as comfortable as possible, in terms of physical and psychical conditions and free from any nuisance. Therefore it seems merited to investigate the acoustic climate (i.e. acoustic phenomena caused by the sources of noise of vibrations in the function of time and space) and the working conditions during the operation of MAN SG242 vehicles, widely used in public transport systems. The following conclusions can be formulated (based on the conducted tests): the highest effective weighted values of vibration acceleration a_w, eq (0.823 m/$s^{2}$) (exceedance of the legitimate value) were noted in the passengers' compartment in the middles of the vehicle, the lowest- in the driver's cabin (0.411 m/$s^{2}$). In the driver's cabin, the peak noise level $L_C$ peak = 138.7 dB was exceeded; as the 1/3 octave analyses show, in the driver's cabin dominates low-frequency noise with the frequency from 10 to 25 Hz and the acoustic pressure level of about 90 dB (G). The research has been conducted within the framework of the author's research no 10.10.130.140 and the statuary ones no 11.11.130.119.
    Źródło:
    Acta Physica Polonica A; 2010, 118, 1; 27-30
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of the Vibroacoustic Climate Inside the Buses Solaris Urbino 12 Used in Public Transport Systems
    Autorzy:
    Damijan, Z.
    Iwański, D.
    Dahlke, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1490375.pdf
    Data publikacji:
    2012-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    89.40.-a
    07.10.-h
    43.40.Lc
    07.64.+z
    Opis:
    Despite new technological solutions and attempts to improve the working conditions during the operation of vehicles, city bus drivers are still exposed to negative impacts of noise and vibrations, causing stress, increased fatigue and lead to numerous diseases. Therefore it seems merited to investigate the acoustic climate (i.e. acoustic phenomena caused by the sources of noise of vibrations in the function of time and space) and the working conditions during the operation of Solaris Urbino 12 vehicles, widely used in public transport systems. The main aim of the research was to show the influence of the 5 day, 8 h working week on selected psycho-physiological parameters on a driver's organism. It was assumed that the main aggravating factor of the driver's organism are vibroacoustics conditions of a work place. The results of this research will be presented in due course. This work presents the research on vibroacoustic climate in one of many city buses used - Solaris Urbino 12. Investigation of the vibroacoustic climate is the branch of environmental biophysics. The measurements, tests and analysis are genuine because they were carried out under real conditions, with passengers, in the long stretches of time and in the entire route of the vehicle. Presented results are very rarely reported in the literature.
    Źródło:
    Acta Physica Polonica A; 2012, 121, 1A; A-032-A-037
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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