Assessment of Reliability of Recognition of Nanoparticles of Silver on Polyester Fibers on Two-dimensional Models and Experimental Data of the Raman Ranges

Results of comparison of parameters of crossing of distribution of multidimensional correlation components of polarizing Raman ranges with control on polarizing characteristics at recognition of nanoparticles of silver are given in polyair fibers on vector-matrix modeling and generation of multidimensional correlation data. The assessment of reliability of recognition of nanoparticles was carried out on joint probability of normal distributions of intensivnost of the Raman spectrograms of fibers of polyair

Vector-matrix Analytical Model Recognitions of Nanoparticles of Silver on Polyester Fibers on Polarizing Raman Ranges

Results of vector-matrix modeling of estimates of crossing of ellipses of distribution at recognition of nanoparticles of silver are given in polyair fibers on multidimensional correlation components of the Raman ranges with control according to polarizing characteristics. Reliability of recognition of nanoparticles was estimated on joint probability of normal distributions of intensivnost of the Raman spectrograms of nanoparticles of silver depending on longitudinal and cross polarization of laser radiation on all range of a range

Assessment of Reliability of Recognition of Nanoparticles of Silver on Polyester Fibers on Two-dimensional Models and Experimental Data of the Raman Ranges

Results of comparison of parameters of crossing of distribution of multidimensional correlation components of polarizing Raman ranges with control on polarizing characteristics at recognition of nanoparticles of silver are given in polyair fibers on vector-matrix modeling and generation of multidimensional correlation data. The assessment of reliability of recognition of nanoparticles was carried out on joint probability of normal distributions of intensivnost of the Raman spectrograms of fibers of polyair

The Control of Gold Nanoparticles on Polyester Fibers by Raman Spectrograms in Conditions of Information Uncertainty with Detection Accuracy

Results of modeling of the Raman spectrograms of polyester fibers are presented when drawing nanoparticles of gold on them. As a result of the carried-out modeling were allocated: initial ranges, background components and the Raman ranges without background components. For simplification of procedures of mathematical modeling it was chosen 7 informative resonant peaks of the received spectrograms. Further processing was carried out only on coordinates of resonant peaks. For detection of reliability of control of nanoparticles of gold on making components of the Raman ranges when using conditions of information uncertainty in work the method of an assessment of multidimensional reliability on joint probability of crossing of dispersions of normal distributions of intensivnost of the Raman spectrograms without nanoparticles and with nanoparticles on fibers depending on wave numbers on all range of their changes is offered. Values of reliability of control on making components of the Raman spectrograms were as a result received and the most exact method for monitoring procedure of nanoparticles of gold on a surface of fibers is revealed. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3357

The Structure and Content Peculiarities of Carbon Material Obtained under the Polyacrylonitrile Infra-red Heating

It is first determined by the semiempirical quantum chemical model MNDO for a carbon material (CM) structure based on polyacrylonitrile (PAN) heat-treated that the increase of a content N from 14 to 18 atoms in CM monolayers C46N14H10, C44N16H12, and C42N18H14 and a content H from 12 to 22 atoms in CM monolayers C44N16H12 and C44N16H22 leads to the decrease of the binding energy (EB) from 7.40; 7.12 to 6.88 and 6.25 eV, respectively; and to the increase of the differences between the maximum and minimum bond lengths (∆l), between the maximum and minimum valence angles (∆Θ), and between the maximum and minimum local charges (∆q) from 0.176 Å; 12.0°, and 0.487 to 0.238 Å; 20.8°, and 0.613, respectively, and promotes the CM structure curvature. Quantum chemical simulation results are confirmed by the element analysis of CM samples and a nanocomposite FeNi3 / C. As the IR heating temperature is increased from 30 to 500 °С, concenrations N (СN) and H (СH) in the CM and nanocomposite FeNi3 / C are decreased from 27 to 18 and 10 wt % and from 6 to 1 and 0.5 wt %, respectively. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3364

Microwave Properties of Carbon Nanotubes Grown by Pyrolysis of Ethanol on Nickel Catalyst

The efficiency of carbon nanotubes produced by CVD-method on a nickel catalyst at a protection from microwave radiation is shown. These data are confirmed by scanning electron microscopy, energy disper-sive X-ray analysis and spectral analysis of the microwave radiation in the frequency range 26-40 GHz. The observed value of the transmission coefficient S21, up to – 42.7 dB, is in agreement with considered possible absorption mechanisms of electromagnetic wave energy in carbon nanoscale systems “CNT-nickel nanoparticles”. The application of carbon powder materials in shielding of electromagnetic radiation has been theoretically justified. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3628

Evaluation of Silver and Gold Nanoparticles on Polyester Fibers by Fluorescent Polarization Raman Spectra

The results of the validation of identification nanoparticle colloidal silver and gold on the polyester fibers on the background component of the Raman spectra in the control based on the polarization chara c-teristics. The accuracy of identification of nanoparticles was evaluated by the joint probability of crossing normal scatter intensity distributions Raman spectrograms as silver nanoparticles and gold nanoparticles on polyester fibers, depending on the longitudinal and transverse polarization of the laser radiation on the entire range of wave numbers. Defined generalized parameter values common to distributions over the en-tire range for each wave numbers with the polarization of the laser and across the grain, and generalized reliability of the control and identification of nanoparticles of silver, gold for assessing the likelihood of the complete group of events. Set the sensitivity of detection reliability. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3638

Synthesis of the Carbon Nanomaterials Based on Renewable Bioresources

The effectiveness and feasibility of producing nanoscale carbon materials from renewable bioresources were shown as an example marsh mass. The mechanisms of synthesis of amorphous organic carbon from sphagnum moss species modified by a liquid peat phase of humic nature are discussed. A fundamentally new way of producing carbon nanotubes by mechanical activation of amorphous organic carbon is described. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3627

The Formation and Study of the FeCo Nanoparticles Alloy in Structure of Metal-Carbon Nanocomposites FeCo/C

The study of the peculiarities of the formation of the nanoparticles FeCo-alloy in the composition of metal-carbon nanocomposites FeCo/C. Structure, phase composition and kinetic processes of synthesis of nanocomposites FeCo/C by methods of Mossbauer spectroscopy were studied. This allowed us to establish the peculiarities of formation of nanoparticles FeCo alloy in the composition of the nanocomposites. The nanocomposites were synthesized by the IR-pyrolysis at temperatures of precursors of 300 - 800 °C on the basis of polyacrylonitrile (PAN), iron acetylacetonate and cobalt acetate. Also it is established that an increase in the average size of nanoparticles FeCo with increasing temperature synthesis is occurred. In the temperature range of synthesis of 600-800 °C the size varies from 9- 10 to 16-18 nm, respectively. The features the phase transitions and phase composition of the metal-carbon nanocomposites FeCo / C were studied by Mossbauer spectroscopy. Nanocomposites were synthesized in the temperature range of T = 300-800 °C. It was shown that the samples synthesized at T = 300 °C contains of superparamagnetic nanoparticles of magnetite and amorphous oxide of iron only. The process of forming nanoparticles of alloy FeCo occurs within the temperature range 500-600 ° C due to the recovery of amorphous iron oxide and magnetite as well as them dissolving in a phase of cobalt. The growth of size of nanoparticles of alloy by agglomeration and dissolution of iron in the alloy nanoparticles occurs only at the temperature range of synthesis 600-800 ° C. This is confirmed by a decrease of the content of Fe, which associated with carbon and it is consistent with the results of phase and structural studies, carried out in previous works

The last integrable case of kozlov-Treshchev Birkhoff integrable potentials

We establish the integrability of the last open case in the Kozlov-Treshchev classification of Birkhoff integrable Hamiltonian systems. The technique used is a modification of the so called quadratic Lax pair for $D_n$ Toda lattice combined with a method used by M. Ranada in proving the integrability of the Sklyanin case.Comment: 13 page