Temat: 42.30.-d - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: CRI and GAI comparison in LED light sources using image processing
Autorzy:: Üncü, İ.
Coşkunsu, S.
Sönmez, C.
Biçakçi, O.
Tematy:: 07.05.Pj
42.30.-d
42.66.Ne; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1070203.pdf Link otwiera się w nowym oknie
Opis:: In this study, color rendering index and gamut area index related to the light quality of a light source are compared. Color rendering index is a measure that demonstrates how much a light source reveals colors in nature. In color rendering index measurements, average of reference colors is taken to obtain an overall measurement value. As to gamut area index measurement, the result is obtained through the field measurement formed by the results of reference colors in the color space.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 2.

Tytuł:: Quasi-Collinear Acousto-Optic Interaction in Inhomogeneous Acoustic Field
Autorzy:: Maslakov, A.
Trushin, A.
Voloshinov, V.
Tematy:: 42.79.Jq
42.79.Ci
42.30.-d
42.25.Fx; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1383207.pdf Link otwiera się w nowym oknie
Opis:: In studying characteristics of quasi-collinear acousto-optic tunable filters, we observed a new effect not explained by existing theories. As found, at high levels of driving power corresponding to high diffraction efficiency, a transition of energy from a diffracted light beam to a non-diffracted one vanished. In addition, the increase of the acoustic power was accompanied by a significant broadening of the filter frequency bandwidth. This effect could not be described in terms of the traditional consideration of acousto-optic diffraction based on a plane wave approximation and a model of a homogeneous acoustic column. The goal of this research was to develop a mathematical model capable of a correct description of the new effects. The paper examines a case of the quasi-collinear acousto-optic diffraction taking into account the two-dimensional spatial structure of the acoustic field. We gave a theoretical description of the effect of diffracted light beam intensity saturation at high level of acoustic driving power. It was shown that this effect was caused by the diffraction distortion of the acoustic field phase fronts in the plane of the acousto-optic interaction.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 3.

Tytuł:: The Characterization of Defects in Multi-Layered Composite Materials by Thermal Tomography Methods
Autorzy:: Swiderski, W.
Tematy:: 07.57.-c
07.05.Pj
42.30.-d
42.30.Wb
42.72.Ai; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1808057.pdf Link otwiera się w nowym oknie
Opis:: The idea of thermal tomography is slicing a work piece for some in-depth layers which exhibit the distribution of thermal properties in materials by the analogy with X-ray tomography. Thermal tomography is based on the analysis of the surface temperature evolution which follows thermal stimulation of test samples. In this paper, some experimental results of applying the dynamic thermal tomography algorithm to a carbon fibre reinforced plastic sample are presented. The efficiency of few data processing methods is discussed.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 4.

Tytuł:: Comparison of Methods for Determining the Contrast Distribution in Interference Images with Speckle Noise
Autorzy:: Pyziak, L.
Matczak, M.
Zięba, P.
Tematy:: 42.25.Hz
42.30.-d
42.30.Kq
42.30.Ms; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1032503.pdf Link otwiera się w nowym oknie
Opis:: Information about certain physical states of an examined object is encoded in the distribution of the fringe contrast in the metrological interference images of the object. Determining the contrast is one of the steps of converting the image into the distribution of the measured quantity in holographic fringe-contrast interferometry. In this paper, three methods of determining the fringe contrast in interference images containing speckle noise are compared. As the criterion for comparing the methods, the mean absolute error has been used. It turns out, in accordance with this criterium, the most effective method is the phase-shifting one.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 5.

Tytuł:: Two-Dimensional Optical Imaging of Artificial Magnetic Field in the Laboratory
Autorzy:: Li, X.
An, N.
Feng, X.
Bai, J.
Tematy:: 42.25.Ja
42.30.-d
78.20.Ls; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1400280.pdf Link otwiera się w nowym oknie
Opis:: Two-dimensional images of the artificial magnetic field created by permanent magnets were obtained by means of the Faraday magnetic rotation effect. This provides a convenient and effective means to observe and measure macro-scale magnetic field, as well as lays a base for three-dimensional optical imaging of magnetic field. The magnetic field imaging here can also be considered as a key part of the magnetic rotation geomagnetic field imaging method which we put forward before, and will provide experimental support for this method.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 6.

Tytuł:: Water Hydrogen Bonds Study by Opto-Magnetic Fingerprint Technique
Autorzy:: Koruga, Đ.
Miljković, S.
Ribar, S.
Matija, L.
Kojić, D.
Tematy:: 33.20.Kf
33.57.+c
42.25.Ja
42.30.-d
42.50.Ex; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1537894.pdf Link otwiera się w nowym oknie
Opis:: Hydrogen bond has dual property, classical (electrostatic interaction based on Coulomb's law) and quantum (wave function based on Schrödinger equation). Since Planck's constant is one of the main criteria for decision which process is quantum, or how much is close to be quantum, we use electrical and magnetic forces of valence electrons, as point of departure, to develop method for opto-magnetic fingerprint of matter. During the study of different type of matter we observed phenomena from spectral convolution data of digital images which characterize matter from both covalent and non-covalent bonding. Since water is matter that is most abundant with hydrogen bonds, we present results of 18.2 MΩ water investigation on different temperature and under influence of constant and variable magnetic fields by opto-magnetic method. Bearing in mind that Linus Pauling, in his book Nature of the Chemical Bond (Cornel University Press, 1939), for the first time presented the systematic concept of the hydrogen bond to the molecular world and its machinery, this paper is written in honor to him and 70th anniversary of one of the most important scientific paradigm.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 7.

Tytuł:: Opto-Magnetic Method for Epstein - Barr Virus and Cytomegalovirus Detection in Blood Plasma Samples
Autorzy:: Papić-Obradović, M.
Kojić, D.
Matija, A.
Tematy:: 33.20.Kf
33.57.+c
42.25.Ja
42.30.-d
42.70.Jk
87.19.xd; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1537895.pdf Link otwiera się w nowym oknie
Opis:: Motivated by characterization of paramagnetic materials (Al, Mn and Ti) and diamagnetic materials (Cu, C and Zn) by opto-magnetic method that is based on light-matter interaction using digital imaging, we present results of Epstein-Barr virus (EBV) and cytomegalovirus (CMV) detection in blood plasma. To investigate light-blood plasma interaction we use wavelength difference of diffuse white light and reflected polarized light in red and blue channels of digital images (opto-magnetic method). Digital images of samples are analyzed by spectral convolution algorithm for light-matter interaction analysis. Since opto-magnetic method can detect very small difference between normal and pathological tissue states it is advantageous in comparison with classical methods. Especially it is important for early detection of suspicious tissue states and detection of viral infection presence in plasma. We compared our results with results of standard biomedical test for EBV and CVM, as a reference, and found out for group of 40 samples significant correlation of 93. 6%.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 8.

Tytuł:: On the Possibility of Developing Matched Acousto-Optical Light Filtering Method for Incoherent Telecommunications and Earth Remote Investigations
Autorzy:: Proklov, V.
Byshevski-Konopko, O.
Lugovskoi, A.
Tematy:: 42.79.Jq
43.58.Kr
42.30.-d
42.79.Sz
42.79.Qx
84.40.Ua; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1377946.pdf Link otwiera się w nowym oknie
Opis:: This is a systematic study of the possibility of creating multi-frequency matched acousto-optic light filters and constructing on new basic principles of the non-coherent optical transmission systems with optical code division multiple accesses and hyperspectral sensors for remote sensing using pre-detector optimal filtering of optical information.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 9.

Tytuł:: Epidermal Layers Characterisation by Opto-Magnetic Spectroscopy Based on Digital Image of Skin
Autorzy:: Koruga, Đ.
Bandić, J.
Janjić, G.
Lalović, Č.
Munćan, J.
Dobrosavljević Vukojević, D.
Tematy:: 43.58.Bh
07.05.Pj
42.79.-e
42.30.-d
42.25.Ja
87.64.Dz; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1489823.pdf Link otwiera się w nowym oknie
Opis:: According to the most literature data, the skin is usually observed as a simple structure with equivalent electrical model, which includes general properties of epidermis, basal membrane and dermis. In this paper, we analyzed the skin structure as a more complex system. Particularly we analyzed epidermis based on layers approach and its water organization in lipids ordered in sub-layers. Using opto-magnetic spectroscopy method, which is very sensitive to paramagnetic/diamagnetic properties of the tissue, we found out that nanowater structure ordering in lipids of epidermal layers play very important role in skin properties. We use bioimpedance as complementary and compatible method to opto-magnetic spectroscopy in skin characterization. In our investigation we found out the difference of the skin properties of the people who are drinking two different type of water (Z and N). We observed the significant difference in middle part of stratum granulosum, where water-lipid sub-layers exists. These results indicate importance of water nanolayers presence in epidermis and type of drinking water reflecting on human skin properties.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 10.

Tytuł:: Application of Graphics Processing Unit for In-Line Electron Holography
Autorzy:: Morawiec, K.
Dłużewski, P.
Kret, S.
Szczepańska, A.
Li, T.
Sloan, J.
Tematy:: 68.37.Lp
68.37.Og
68.55.Nq
42.30.Rx
61.05.jp
07.05.Pj
42.30.-d
42.30.Wb; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1033020.pdf Link otwiera się w nowym oknie
Opis:: In the present work, software for exit electron wave reconstruction based on the iterative approach was implemented and a new method for drift-correction of the focal series was proposed.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

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