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Wyszukujesz frazę "Wojtkowski, M." wg kryterium: Autor


Wyświetlanie 1-3 z 3
Tytuł:
Optical Fourier Domain Interferometry as a novel tool for biological imaging
Autorzy:
Rumiński, D.
Kowalczyk, A.
Wojtkowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/1396523.pdf
Data publikacji:
2011
Wydawca:
Fundacja na Rzecz Młodych Naukowców
Tematy:
OFDI
swept source
OCT
medical imaging
eye imaging
Michelson interferometer
interferometry
Opis:
Purpose of this work is to introduce results of biological objects measurements with Optical Coherence Tomography system working with swept source laser (OFDI system). This specified source with spectrum centred around 1040 nm is dedicated to measure posterior segment of the eye. OCT with this wavelength is expected to be next generation for this sort of systems. Although commonly used 800 nm source enables imaging retina, deeper tissue layers are not available with this wavelength. Longer wavelengths in range of infrared spectrum (e.g. 1040 nm) are being weakly scattered which enables to go down to the choroid layer [1]. Examination this structure composed mostly from blood vessels might be very important for early diagnosis of eye diseases. In this paper system setup, swept source scheme and eye images would be introduced.
Źródło:
Challenges of Modern Technology; 2011, 2, 1; 16-18
2082-2863
2353-4419
Pojawia się w:
Challenges of Modern Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical analysis of the influence of blast wave on human body
Autorzy:
Sławiński, G.
Niezgoda, T.
Barnat, W.
Wojtkowski, M
Powiązania:
https://bibliotekanauki.pl/articles/244503.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
improvised explosive devices
blast wave
survivability
numerical study
Opis:
Threats for military personnel during combat missions nowadays are of different sources. Further development of methods for neutralization of mines or improvised explosive devices (IED) explosions must be preceded by identification of the impact phenomenon on crew of the military vehicle. Large accelerations cause injury to a person located in the interior of the vehicle and may lead to permanent disability exempting soldiers from the battlefield. Information about overload coming from the explosion of IEDs on humans are difficult to access or not sufficiently detailed. Therefore, the basis for their acquisition is conducting experimental research and modelling. The paper is presents finite element analysis of blast wave effects on a human body simulated by a numerical 50th percentile HYBRID III dummy. Coupled Euler and Lagrange (ALE) formulations are used in the finite element analysis of such problems to accurately represent the detonation phenomenon. Numerical model was developed in LS-PrePost software. All the computational analyses were carried out using an explicit LS-DYNA solver on multiprocessor cluster. Data such as hip and knee moment of inertia, femoral force, and foot acceleration are collected from the numerical dummy, which simulates the occupant’s response. These data are then compared to injury threshold values from various references to assess survivability
Źródło:
Journal of KONES; 2013, 20, 3; 381-386
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Frequency Domain Optical Coherence Tomography Techniques in Eye Imaging
Autorzy:
Wojtkowski, M.
Kowalczyk, A.
Targowski, P.
Gorczyńska, I.
Powiązania:
https://bibliotekanauki.pl/articles/2035626.pdf
Data publikacji:
2002-12
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
42.30.Wb
42.66.Ew
42.66.-p
07.60.-j
07.60.Ly
Opis:
This contribution presents an application of frequency-domain optical tomography to ophthalmology. Essential theoretical foundations of time-domain and frequency-domain optical tomography are presented. Images of sections through the anterior chamber, the corneo-scleral angle and fundus of the eye are reconstructed from the spectral fringes. The morphological information gained by tomograms is important for diagnosing and planning of a treatment of glaucoma.
Źródło:
Acta Physica Polonica A; 2002, 102, 6; 739-746
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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