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Tytuł:
Spatial Presentation of Sea Bottom Using EMIF Format
Autorzy:
Dupuy, R.
Makar, A.
Powiązania:
https://bibliotekanauki.pl/articles/320821.pdf
Data publikacji:
2010
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
sea bottom
S-57
Opis:
In the paper, there is presented a problem of search object drift during SAR operation. Presented method of conducting search takes into account probability of containment (POC) of searched object inside search area. Its also consider available endurance of SAR unit. Described method allows for achieving as good as possible average POC.
Źródło:
Annual of Navigation; 2010, 16; 25-31
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Developing Hardware and Software Appropriate to Phototrichogram Method
Autorzy:
Üncü, İ.
Köse, O.
Powiązania:
https://bibliotekanauki.pl/articles/1402429.pdf
Data publikacji:
2015-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.57.-s
87.57.Ra
Opis:
Visual method of hair analysis in medicine is called phototrichogrametry. Method is based on the interpretation of two image showing the physical changes of the hair. The photos are taken in green light, exposing both thin and thick hairs. By the help of the software the density of facial hair is determined and intensity of growth is assessed. Length increment can be approximately determined also. standardization, objectivity, reliability, decreasing errors and saving time make this method valuable healing experiment platform.
Źródło:
Acta Physica Polonica A; 2015, 128, 2B; B-384-B-387
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Medical Radioisotopes Produced Using the Alpha Particle Beam from the Warsaw Heavy Ion Cyclotron
Autorzy:
Szkliniarz, K.
Jastrzębski, J.
Bilewicz, A.
Chajduk, E.
Choiński, J.
Jakubowski, A.
Janiszewska, Ł.
Leszczuk, E.
Łyczko, M.
Sitarz, M.
Stolarz, A.
Trzcińska, A.
Wąs, B.
Zipper, W.
Powiązania:
https://bibliotekanauki.pl/articles/1402612.pdf
Data publikacji:
2015-05
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.57.un
87.57.-s
Opis:
The internal alpha particle beam of the heavy ion cyclotron operated by the Heavy Ion Laboratory (HIL) of the University of Warsaw has a maximum energy of 32 MeV and currently an intensity of up to 1 pμA. This beam is used by the HIL-University of Silesia collaboration for the production of research quantities of $\text{}^{211}At,$ $\text{}^{72}Se//\text{}^{72}As$ and $\text{}^{43,44}Sc$ radioisotopes. The produced activities are transported to the Institute of Nuclear Chemistry and Technology in Warsaw where research on therapeutic and imaging radiopharmaceuticals based on these radioisotopes is pursued.
Źródło:
Acta Physica Polonica A; 2015, 127, 5; 1471-1474
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measurement of Corneal Neovascularisation with the Use of Image Processing Techniques
Autorzy:
Murawski, K.
Białas, D.
Rękas, M.
Powiązania:
https://bibliotekanauki.pl/articles/1189943.pdf
Data publikacji:
2015-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.57.-s
87.57.N-
87.57.nm
Opis:
The aim of the article is to present the developed technique to measure the degree of neovascularisation of the cornea image in visible light. The study used an image sensor attached to a slit lamp. The proposed technique consists in performing segmentation of the color image to enhance blood vessels and setting values of the degree of cornea neovascularisation. Comparison of the indicator before and after treatment of the cornea can objectively assess the effectiveness of the adopted method of treatment.
Źródło:
Acta Physica Polonica A; 2015, 127, 6; 1732-1736
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Qualification of the Most Statistically "Sensitive" Diffusion Tensor Imaging Parameters for Detection of Spinal Cord Injury
Autorzy:
Krzyżak, A. T.
Jasiński, A.
Adamek, D.
Powiązania:
https://bibliotekanauki.pl/articles/2043545.pdf
Data publikacji:
2005-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
01.30.-y
87.57.-s
07.57.Pt
Opis:
Qualification of the most statistically "sensitive" diffusion parameters using Magnetic Resonance (MR) Diffusion Tensor Imaging (DTI) of the control and injured spinal cord of a rat in vivo and in vitro after the trauma is reported. Injury was induced in TH12/TH13 level by a controlled "weight-drop". In vitro experiments were performed in a home-built MR microscope, with a 6.4 T magnet, in vivo samples were measured in a 9.4 T/21 horizontal magnet The aim of this work was to find the most effective diffusion parameters which are useful in the statistically significant detection of spinal cord tissue damage. Apparent diffusion tensor (ADT) weighted data measured in vivo and in vitro on control and injured rat spinal cord (RSC) in the transverse planes and analysis of the diffusion anisotropy as a function of many parameters, which allows statisticall expose of the existence of the damage are reported.
Źródło:
Acta Physica Polonica A; 2005, 108, 1; 207-210
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modalmetric Fiber Optic Sensor for Security of Collections
Autorzy:
Życzkowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/1399350.pdf
Data publikacji:
2013-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
42.81.Pa
87.57.-s
42.79.Qx
Opis:
The main aim of the work is the integration of modalmetric sensor in one arm. The proposed sensor is a classical fiber optic cable whose measuring arm is upgraded with multimode sensor. The aim of the research is to assess the impact of modal changes for detection of mechanical disturbances and comparative assessment of detection capabilities of interferometer sensor, modalmetric sensor, and hybrid sensor for different types of excitations. The measurements concerns the area of fundamental research. The results can be used in the construction of sensors with corresponding characteristics and properties, especially to protect museum collections.
Źródło:
Acta Physica Polonica A; 2013, 124, 3; 428-431
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multispectral Systems of Imaging Scenery in Critical Infrastructure Protection, Threat Identification and Recognition
Autorzy:
Karol, M.
Szustakowski, M.
Życzkowski, M.
Markowski, P.
Ciurapiński, W.
Powiązania:
https://bibliotekanauki.pl/articles/1399365.pdf
Data publikacji:
2013-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
42.30.Wb
87.57.-s
42.79.Qx
Opis:
The surveillance system more often uses devices working on different bands that are used not only for detection but also to recognize and identify threats. The paper presents the possibility of protection, detection and identification of risks, achieved through the use of multispectral detection systems in critical infrastructure facilities. The authors consider the benefits of active sensors based on other wavebands, such as millimeter wave radar, terahertz cameras, infrared camera and shows the ability to detect and identify the target using data collected by the sensors. Also discussed the issue of fusion data from different sensors and opportunities that the whole system obtained by application of data fusion.
Źródło:
Acta Physica Polonica A; 2013, 124, 3; 459-462
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methods of Information Extraction from OCT Images
Autorzy:
Zajac, A.
Urbański, Ł.
Kasprzak, J.
Kecik, D.
Powiązania:
https://bibliotekanauki.pl/articles/1493300.pdf
Data publikacji:
2011-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.57.-s
42.79.Qx
42.30.Wb
Opis:
Optical diagnostic methods of biological media are more and more willingly used in clinical practice - also instead of classical biopsy. Particularly, optical coherent tomography methods and mammography (permitting achieving three-dimensional imaging of a tissue) are attractive in comparison with classical diagnostic methods. The article presents the analysis methods of optical parameters of biological tissues developed allowing obtaining absolute values of these parameters. Thanks to modern image analysis methods - wavelet transforms - the optical diagnostic effectiveness was improved. The theoretical and practical results achieved were compared with results of commercially accessible methods implemented in OCT devices.
Źródło:
Acta Physica Polonica A; 2011, 120, 4; 772-775
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Temperature Measurement by Statistical Parameters of Ultrasound Signal Backscattered from Tissue Samples
Autorzy:
Gambin, B.
Kruglenko, E.
Powiązania:
https://bibliotekanauki.pl/articles/1402186.pdf
Data publikacji:
2015-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.50.wp
43.35.+d
87.57.-s
Opis:
A novel estimation of temperature changes inside soft tissues has been proposed in sub-ablation range, i.e. ≈ 20°C-48°C. This estimation has been obtained by studying statistical properties of backscattered ultrasonic signals. Two different procedures of heating/cooling have been performed in which the RF echoes have been registered from soft tissue phantom in the first procedure, and from soft tissue in vitro in the second one. Calculated envelopes of signals registered in time points during heating/cooling experiments have been treated as a statistical sample drawn from a random variable with three different distributions, namely the Rayleigh distribution, the Nakagami distribution, and the K-distribution. The histograms obtained in subsequent time moments have been fitted to the three distributions. Dependencies of their shape and scale parameters on temperature have been calculated. It is concluded that the shape parameter of the K-distribution can be chosen as the best marker of temperature changes in both experiments. The choice of the marker has been made by analysis of temperature dependencies of all calculated parameters and by comparing the quality of fitting all histograms to the considered distributions. Besides, the chosen marker as a function of temperature exhibits the closest shape to temperature/time function experimentally measured.
Źródło:
Acta Physica Polonica A; 2015, 128, 1A; A-72-A-78
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physical Properties of Fiber-Optic Sensor in New Dual Configuration
Autorzy:
Życzkowski, M.
Szustakowski, M.
Markowski, P.
Karol, M.
Powiązania:
https://bibliotekanauki.pl/articles/1418076.pdf
Data publikacji:
2012-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
42.30.Wb
87.57.-s
42.79.Qx
Opis:
The main aim of the work is the integration of two different fiber-optic sensors: the Michelson interferometric sensor, the Mach-Zehnder interferometric, the Sagnac interferometric and modalmetric sensors. The proposed hybrid sensor is a classical interferometer whose measuring arm is upgraded with modalmetric sensor. The theme of research is to assess the impact of modalmetric sensor to interferometer and comparative assessment of detection capabilities of interferometric sensor, modalmetric sensor and hybrid sensor for different types of excitations. The described tests concern the area of basic researches. The results can be used in the construction sensors with corresponding characteristics and properties to the appropriate applications.
Źródło:
Acta Physica Polonica A; 2012, 122, 5; 938-941
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research and Parameter Optimization of the Infrared Sensor for Eye Track
Autorzy:
Życzkowski, M.
Szustakowski, M.
Różanowski, K.
Murawski, K.
Karol, M.
Markowski, P.
Powiązania:
https://bibliotekanauki.pl/articles/1418088.pdf
Data publikacji:
2012-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
42.30.Wb
87.57.-s
42.79.Qx
Opis:
This paper presents infrared sensor for eye tracking system for ophthalmology and truck drivers. System is based on camera and near infrared diode illuminator. We present test results of sensor detection at different operating parameters. Tests were chosen so as to see how the sensor behaves in difficult conditions, additionally tested whether long-term operation of the sensor has an impact on the examined person.
Źródło:
Acta Physica Polonica A; 2012, 122, 5; 942-945
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Point Investigation Method for Cancer Changed Tissues
Autorzy:
Kłonowski, Ł.
Kulas, Z.
Bereś-Pawlik, E.
Rząca, M.
Czarnecki, R.
Grzebieniak, Z.
Powiązania:
https://bibliotekanauki.pl/articles/1506797.pdf
Data publikacji:
2010-12
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.57.-s
87.57.R-
87.57.nm
87.19.xu
87.19.xj
Opis:
In this paper we describe the method of point investigation for cancer changed tissues with application of fluorescence phenomenon. The measurements have been made using a specially constructed scanning setup and fiber sensors. The experiment with investigation of endogenous fluorescence has been made on different types of slide tissues (e.g. breast and intestine tumor or precancerous and pathological skin tissues). The obtained spectral characteristics of fluorescence, with typical intensity peaks in 480-520 nm range, have explicitly outlined healthy and pathologically changed areas. The intensity of detected fluorescence determines the evaluation of disease advancement. Moreover, the ability to scan the surface of a tissue sample with constantly moving step of scanning setup in X-Y axis allows us to present the results in a spatial distribution of fluorescence intensity.
Źródło:
Acta Physica Polonica A; 2010, 118, 6; 1174-1176
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Feed Forward Neural Network for Autofluorescence Imaging Classification
Autorzy:
Kulas, Z.
Bereś-Pawlik, E.
Wierzbicki, J.
Powiązania:
https://bibliotekanauki.pl/articles/1506801.pdf
Data publikacji:
2010-12
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.57.-s
87.57.R-
87.57.nm
87.19.xu
87.19.xj
Opis:
The key elements in cancer diagnostics are the early identification and estimation of the tumor growth and its spread in order to determine the area to be operated on. The aim of our study was to develop new methods of analyzing autofluorescence images which will allow us an objective and accurate assessment of the location of a tumor and will also be helpful in determining the advancement of the disease. The proposed classification methods are based on neural network algorithms. An Olympus company endoscopic system was used for an autofluorescence intestine imaging study. The autofluorescence imaging analysis process can be divided into several main stages. The first step is preparation of a training data set. The second one involves selection of feature space, namely the selection of those features which enable distinguishing the pathologically altered areas from the healthy ones. Final stages of the analysis include pathologically changed tissue classification and diagnosis.
Źródło:
Acta Physica Polonica A; 2010, 118, 6; 1189-1193
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synchrotron Radiation in Biology and Medicine
Autorzy:
Pełka, J.
Powiązania:
https://bibliotekanauki.pl/articles/1812240.pdf
Data publikacji:
2008-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.57.-s
87.59.-e
07.85.Fv
07.90.+c
Opis:
This work is focused on a present status of synchrotron radiation X-ray applications in medicine and biology to imaging, diagnostics, and radiotherapy. Properties of X-ray beams generated by synchrotron sources are compared with radiation produced by classical laboratory X-ray tubes. A list of operating and planned synchrotron facilities applicable to biomedical purposes is given, together with their basic characteristics. A concise overview of typical X-ray synchrotron techniques in biology and medicine is carried out with discussion of their specific properties and examples of typical results.
Źródło:
Acta Physica Polonica A; 2008, 114, 2; 309-329
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optical Diagnostic in Medicine - Needs and Possibilities
Autorzy:
Kasprzak, J.
Samsel, D.
Borkowska, A.
Kecik, M.
Powiązania:
https://bibliotekanauki.pl/articles/1493247.pdf
Data publikacji:
2011-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
42.30.Wb
87.57.-s
42.79.-e
42.79.Qx
Opis:
Methods of optical imaging used in medical diagnostic (with taking the newest diagnostic techniques into consideration in particular) have been presented. Selected optical characteristics of tissues having an influence on the range of the classical methods of the optical imaging have been discussed in detail. The respond to the classical method limitations was to use scanning methods and detection techniques consisting in three-dimensional imaging of tissue structures in real time. A specific eye structure allows the wide using of these techniques in ophthalmology. Such advantages like non-invasiveness, non-contactness and high resolution (guaranteeing the safety of a patient) show a huge success of these techniques. The results of the research (conducted in many research centers) point at the wider application possibility of optical scanning method in medical diagnostic.
Źródło:
Acta Physica Polonica A; 2011, 120, 4; 678-685
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 20

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