Materials physics and mechanics

RAR RUS 167-174 Peter the Great St. Petersburg Polytechnic University Bezrukova

St.Petersburg, Russia

Peter the Great St. Petersburg Polytechnic University Vlasova

St.Petersburg, Russia

Aggregation of Protein Nanoparticles Testing by Optical Spectroscopy In this contribution we report on the inverse optical problem solution for characterizing protein nanoparticles aggregation by optical spectroscopy: absorption spectra, integral static (time average) light scattering spectra and intensity of differential static light scattering. The measurements are compatible, non-destructive and can provide information about the processes in "ill-defined" three-dimensional disperse systems (3D DS) with nanoparticles. Aggregation Protein Nanoparticles Optical Spectroscopy https://mpm.spbstu.ru/article/2010.14.1/ MPM_9_3_P01.pdf

RAR RUS 175-184 United Institute of Informatics Problems of National Academy of Sciences of Belarus Prus

Minsk, Belarus

United Institute of Informatics Problems of National Academy of Sciences of Belarus Dmitruk

Minsk, Belarus

Kharuzhik United Institute of Informatics Problems of National Academy of Sciences of Belarus Snezhko

Minsk, Belarus

United Institute of Informatics Problems of National Academy of Sciences of Belarus Kovalev

Minsk, Belarus

Distributed Computing in the National-Wide Lung Screening and Diagnosis System: First Steps The paper is devoted to consideration of methodological, large-scale data management, medical imaging and software developing issues concerned with the distributed computing in a national-wide telemedicine system. The system substantially exploits the image data provided with the complementary pulmonary X-ray and chest computed tomography (CT) image modalities; its aim is to provide the computerized support of lung disease diagnosis. The computational environment is heterogeneous and is based on PCs and dedicated servers located in medical institutions, as well as on the supercomputer installed in the National Supercomputer Center of Belarus. For utilizing the grid infrastructure, the distributed computing architecture employs the Unicore as a middleware, as well as the Message Passing Interface. At present the project is on its early stage. However, the preliminary research and experimentation performed in framework of the project already involves X-ray lung image data of more than 100 thousands of patients and about a hundred of 3D CT scans of the lungs accumulated in the database. Computing Lung Screening Diagnosis System https://mpm.spbstu.ru/article/2010.14.2/ MPM_9_3_P02.pdf

RAR RUS 185-193 Children Hospital of Vilnius University Samaitiene

Vilnius, Lithuania

Vilnius University Kazakeviciute

Vilnius, Lithuania

Vilnius University Juozapavicius

Vilnius, Lithuania

Morphological Filtering of EEG In the diagnosis of epilepsy long-term monitoring of electroencephalograms (EEG) data may be required to document and study interictal activities which appear as spikes in EEG signals. However visual inspection of EEG done by an expert neurologist is much time consuming. Here an automatic EEG spike detection method that uses morphological filter is described. The goal is to construct a database with data such as parameters of the detected spikes, the amount of different waves in EEG signal. The following analysis of the data is planned to be performed using methods of data mining to find the correlation of spiky signal areas with brain areas, the influence of amount of different waves and number of spikes in the signal on the nature of epilepsy. The grid environment is used for calculations. Morphological Filtering Epilepsy Electroencephalograms EEG https://mpm.spbstu.ru/article/2010.14.3/ MPM_9_3_P03.pdf

RAR RUS 194-209 Peter the Great St. Petersburg Polytechnic University Vorobyeva

St.Petersburg, Russia

Peter the Great St. Petersburg Polytechnic University Melker A.I.

St.Petersburg, Russia

Peter the Great St. Petersburg Polytechnic University Starovoitov

St.Petersburg, Russia

Heat, Temperature, Entropy The history of such notions as heat, temperature, and entropy is considered. The notions were created and evolved both with technique’s requirements and during the advancement of heat science. Some examples from different fields of mathematics which had a great impact on the notion evolution are given. The deduction of Maxwell and Boltzmann distributions is fully considered. The tragedy of pioneers, who worked in this filed, is also discussed. Heat Temperature Entropy https://mpm.spbstu.ru/article/2010.14.4/ MPM_9_3_P04.pdf

RAR RUS 210-227 Peter the Great St. Petersburg Polytechnic University Vorobyeva

St.Petersburg, Russia

Peter the Great St. Petersburg Polytechnic University Melker A.I.

St.Petersburg, Russia

Peter the Great St. Petersburg Polytechnic University Starovoitov

St.Petersburg, Russia

Information, Entropy, Temperature The evolution of such notions as heat, temperature, and entropy in the twentieth century is considered along with new relative notions. The new notions were created in connection with the demands of informatics as well as a result of the appearance of new scientific lines (computer simulation of physical properties, theory of nonlinear oscillations, radiation solid state physics). Some examples from different fields of physics and mathematics which had a great impact on the notion evolution are given. The relation between scientific uncertainty and information, molecular dynamics method, and temperature of a solid are considered in detail. An example of self-organization of chaos is briefly discussed. Information Entropy Temperature https://mpm.spbstu.ru/article/2010.14.5/ MPM_9_3_P05.pdf

RAR RUS 228-235 Peter the Great St. Petersburg Polytechnic University Galich

St.Petersburg, Russia

Wavelets of the Immunofluorescence Distributions; Shannon Entropies, their Central Moments and Fractal Dimensions for Medical Diagnostics Communication contains the immunology data treatment. New nonlinear methods of immunofluorescence statistical analysis of peripheral blood neutrophils have been developed. We used technology of respiratory burst reaction of DNA fluorescence in the neutrophils cells nuclei due to oxidative activity. The histograms of photon count statistics for the radiant neutrophils populations in flow cytometry experiments are considered. Distributions of the fluorescence flashes frequency as functions of the fluorescence intensity are analyzed. Square of deviations on the mean level of fluorescence flashes number considered as the probability measure of immunofluorescence fluctuations. Shannon information entropy, the square of fluctuations, their wavelet and wavelet spectra are investigated for medical diagnostics. Immunofluorescence fractal structure is analyzed for Hurst exponent and Shannon Weaver indices of biodiversity in the spaces of fluctuations, their wavelet and wavelet spectra. Biodiversity of fluorescence neutrophil populations has increasing tendency for oncology diseases, with anomalous increase of correspondence fractal dimension. We observe the universal exponential distribution of the central moments for information entropies. Parameters of exponential decrease are various for different health statuses. Therefore we have new tools to conduct diagnostics and monitoring of health statuses with the exponentially high sensitivity, precision and accuracy. Health or illness criteria are connected with statistics features of immunofluorescence histograms. Neutrophils populations fluorescence presents the sensitive clear indicator of health status. Immunofluorescence Shannon Entropies Medical Diagnostics https://mpm.spbstu.ru/article/2010.14.6/ MPM_9_3_P06.pdf

RAR RUS 236-245 Peter the Great St. Petersburg Polytechnic University Galich

St.Petersburg, Russia

Stability, Tilting, Coup, Delay and Switching for Distributions of Neutrophils Fluorescence in Medical Diagnostics Communication contains the immunology data treatment. New nonlinear methods of immunofluorescence statistical analysis of peripheral blood neutrophils have been developed. We used technology of respiratory burst reaction of DNA fluorescence in the neutrophils cells nuclei due to oxidative activity. The histograms of photon count statistics of the radiant neutrophils populations' in flow cytometry experiments are considered. Distributions of the fluorescence flashes frequency as functions of the fluorescence intensity are analyzed. Statistic peculiarities of histograms set allow divide all histograms into three classes. The classification is based on three different types of smoothing and long-range scale averaged the immunofluorescence distributions with maximum, minimum and monotonic change. First histograms group belongs to healthy donors. Two other groups belong to donors with inflammatory and autoimmune diseases. Some of the illnesses are not diagnosed by standards biochemical methods. Dynamics of a change in the immunofluorescence distributions of healthy and sick people in the process of medical treatment are examined; we observed the right and the contrary transitions or coup of the averaged distributions in histograms. Peculiarities of immunofluorescence for women in pregnant period are classified. Health or illness criteria are connected with statistics features of immunofluorescence histograms. Neutrophils populations' fluorescence presents the sensitive clear indicator of health status. Neutrophils Fluorescence Medical Diagnostics https://mpm.spbstu.ru/article/2010.14.7/ MPM_9_3_P07.pdf

RAR RUS 246-250 Vilnius University Bevainyte

Vilnius, Lithuania

Vilnius University Būtenas

Vilnius, Lithuania

Document Classification Using Weighted Ontology This paper presents document comparison and classification model for Lithuanian language texts based on weighed ontology. The tests have been performed to measure several aspects: i) quality of comparison of documents; ii) optimal size of ontology; iii) type of part of speech words used to create ontology. Final results indicate 96% of correct classification cases and suggest that all the main part of speech terms should be used from the text. The proposed model can be used to classify texts more efficiently than keyword based systems. Ontology Lithuanian language texts https://mpm.spbstu.ru/article/2010.14.8/ MPM_9_3_P08.pdf