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Wyświetlanie 1-15 z 115
Tytuł:
Synthesis, computational, anticancerous and antiproliferative effects of some copper, manganese and zinc complexes with ligands derived from symmetrical 2,2’-diamino-4,4’-dimethyl-1,1’-biphenyl-salicylaldehyde
Autorzy:
Ababneh, Taher S.
El-Khateeb, Mohammad
Tanash, Aissar K.
AL-Shboul, Tareq M.A.
Shammout, Mohammad Jamal A.
Jazzazi, Taghreed M.A.
Alomari, Mohammad
Daoud, Safa
Talib, Wamidh H.
Powiązania:
https://bibliotekanauki.pl/articles/1849324.pdf
Data publikacji:
2021
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
tetradentate schiff base
symmetrical metal complexes
DFT calculation
spectroscopy
anticancerous
antiproliferative
Opis:
Four new symmetrical Schiff bases derived from 2,2’-diamino-4,4’-dimethyl-1,1’-biphenyl-salicylaldehyde have been synthesized and characterized by elemental analysis and different spectroscopic techniques. The reaction of 2,2’-diamino-4,4’-dimethyl-1,1’-biphenyl with two equivalents of 5-tert-butyl-, 3,5-dinitro-, 3,5-dibromo- and 3-tert-butyl-salicylaldehyde yielded 2,2’-bis(5-tert-butyl-salicylideneamino)-4,4’-dimethyl-1,1’-biphenyl (A1) as well as the 3,5-dinitro- (A2), 3,5-dibromo- (A3) and 3-tert-butyl- (A4) substituted derivatives. The tetradentate ligands were then reacted with copper-, manganese- and zinc-acetate producing the tetra-coordinate metal complexes which were characterized by FTIR, UV-Visible spectroscopy, magnetic susceptibility and elemental analysis. Zinc complexes were characterized by 1H-NMR spectroscopy. Density functional theory (DFT) calculations at the B3LYP/6-31G(d) level of theory were carried out to fully optimize and examine the molecular geometries of complexes. Subsequently, IR vibrational and UV-Vis absorption spectra were computed and correlated with the observed values and the results are in good agreement with the experimental data. The anticancerous and antiproliferative activity of the A3 ligand and its metal complexes were determined.
Źródło:
Polish Journal of Chemical Technology; 2021, 23, 1; 7-15
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A DFT study or the relationship between the electronic structure and the antiplasmodial activity of a series of 4-anilino-2-trichloromethylquinazolines derivatives
Autorzy:
Anatovi, Wilfried
Kpotin, Gaston A.
Kuevi, Urbain A.
Houngue-Kpota, Alice
Atohoun, Guy S.
Mensah, Jean-Baptiste
Gómez-Jeria, Juan S.
Powiązania:
https://bibliotekanauki.pl/articles/1178269.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
4-anilino-2-trichloromethylquinazolines
DFT
KPG method
QSAR
antiplasmodial
Opis:
A theoretical study of the relationships between the electronic structure and the antiplasmodial activity of a series of 4-anilino-2-trichloromethylquinazolines derivatives on plasmodium genes was carried out. The electronic structure of molecules was calculated at the B3LYP/6-31G(d,p) level with full geometry optimization. A statistically significant equation (R = 0.98, R² = 0.96, adj-R² = 0.94, F (12, 20) = 43.49 (p < 0.000001) and SD = 0.12) was obtained relating the variation of the biological activity with the variation of a set of local atomic reactivity indices. Based on the analysis of the results, a two-dimensional antiplasmodial pharmacophore was proposed. The process seems to be orbital and charge controlled.
Źródło:
World Scientific News; 2017, 88, 2; 138-151
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Charakterystyka procesu aktywacji cząsteczki tlenu molekularnego na solwatowanych wybranych metalach przejściowych (3d) — obliczenia DFT
Characteristics of the oxygen molecule activation process on 3d selected transition metals — DFT calculations
Autorzy:
Anioł, Aleksandra
Niemiec, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/29521103.pdf
Data publikacji:
2023
Wydawca:
Akademia Tarnowska
Tematy:
aktywacja tlenu molekularnego
DFT
solwatowane kompleksy metali przejściowych
activation of molecular oxygen
solvated metal complexes transitional
Opis:
Przedmiotem pracy jest charakterystyka procesu aktywacji cząsteczki tlenu molekularnego na solwatowanych wybranych metalach przejściowych (3d). W niniejszej pracy, korzystając metody DFT (ang. density functional theory), wykonano obliczenia kwantowo-mechaniczne, których celem było scharakteryzowanie struktury elektronowej sześciokoordynacyjnych kompleksów wodnych i acetonitrylowych o wzorach ogólnych [TM(H₂O)₆]n+ i [TM(CH₃CN)₆]n+, gdzie: n = 2, 3 oraz kompleksów z zaadsorbowaną na centrum metalicznym cząsteczką tlenu molekularnego: ([TM(H₂O)₅–O₂]n+ i [TM(CH₃CN)₅–O₂]n+), gdzie n = 2, 3. Do obliczeń wybrano jony metali przejściowych TM (ang. transition metal) z okresu czwartego: Co2+, Fe2+, Mn2+, Ni2+, Zn2+, Cu2+ oraz Cr3+. Na podstawie przeprowadzonych obliczeń stwierdzono, że każdy z analizowanych w pracy parametrów jest funkcją wprowadzonego metalu przejściowego. Co więcej efekt użytego metalu przejściowego na analizowane parametry (np. energetyka orbitali granicznych, rozmiar przerwy energetycznej, ładunki, itd.) przewyższa efekt użytego rozpuszczalnika (H₂O/CH₃CN).
The subject of this research is the characterization of the activation process of the oxygen molecule on solvated selected transition metals (3d). In this study , using the Density Functional Theory, quantum-mechanical calculations were made, the purpose of which was to characterize the electronic structure of water and acetonitrile six-coordinated complexes with general formulas [TM(H₂O)₆]n+ and [TM(CH₃CN)₆]n+, where: n = 2, 3, and complexes with adsorbed at the metal center with an oxygen molecule ([TM(H₂O)₅–O₂]n+ i [TM(CH₃CN)₅–O₂]n+), where: n = 2, 3. The calculations were made using transition metal ions from the fourth period of periodic table: TM = Co2+, Fe2+, Mn2+, Ni2+, Zn2+, Cu2+ and Cr3+. Based on the calculations performed, it was found that each of the parameters analyzed in this work is a function of the introduced transition metal. Moreover, the effect of the transition metal used on the analyzed parameters (e.g. energetics of boundary orbitals, size of the energy gap, charges, etc.) exceeds the effect of the solvent used (H₂O/CH₃CN).
Źródło:
Science, Technology and Innovation; 2023, 17, 1-2; 30-40
2544-9125
Pojawia się w:
Science, Technology and Innovation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fornasini-Marchesini 2-D State Space Models: Transfer Function Computation Via the Dft
Autorzy:
Antoniou, G.
Emmons, K.
Powiązania:
https://bibliotekanauki.pl/articles/911185.pdf
Data publikacji:
2000
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
teoria systemów
transformata Fouriera
two dimensions system theory
Fourier transform
DFT algorithm
Fornasini-Marchesini's model
Opis:
A new algorithm is presented for the computation of the coefficients of the determinantal polynomial and the coefficients of the adjoint polynomial matrix of a given two-dimensional (2-D) state space model of Fornasini-Marchesini type. The algorithm has been implemented in Matlab and uses the discrete Fourier transform (DFT). The simplicity and efficiency of the technique are illustrated by two examples.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2000, 10, 2; 321-331
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measurement accuracy verification of phasor measurement unit with dynamic phasor estimation
Autorzy:
Arendarski, B.
Rabe, S.
Heineken, W.
Komarnicki, P.
Powiązania:
https://bibliotekanauki.pl/articles/140719.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
discrete Fourier transform (DFT)
dynamic phasor
measurement accuracy
phasor measurement unit (PMU)
power system
Opis:
Power systems that are highly loaded, especially by a stochastic supply of renew- ables and the presence of storages, require dynamic measurements for their optimal control. Phasor measurement units (PMUs) can be used to capture electrical parameters of a power system. Standards on the PMU dynamic performance have been modified to incorporate their new dynamic mode of operation. This paper examines the PMU dynamic performance and proposes essential algorithms for measurement accuracy verification. Measurements of dynamic input signals, which vary in amplitude or frequency, were taken during au- tomated tests of two PMUs. The test results are presented and expounded with further recommendation for the performance requirements. This paper also presents and examines applied testing procedures with relevance to the specifications of the IEEE Standard for Synchrophasor C37.118.1™-2011 and its amendment C37.118.1a™-2014.
Źródło:
Archives of Electrical Engineering; 2018, 67, 3; 529--543
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermodynamic Phase Diagram and Phonon stability, Electronic and Optical Properties of FeVSb: A DFT study
Autorzy:
Bagheri, A.
Boochani, A.
Masharian, S. R.
Jafarpour, F. H.
Powiązania:
https://bibliotekanauki.pl/articles/2203753.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
DFT
thermodynamic phase diagram
phonon
electronic properties
optical properties
Opis:
Mechanical, electronic, thermodynamic phase diagram and optical properties of the FeVSb half-Heusler have been studied based on the density functional theory (DFT) framework. Studies have shown that this structure in the MgAgAs-type phase has static and dynamic mechanical stability with high thermodynamic phase consistency. Electronic calculations showed that this compound is a p-type semiconductor with an indirect energy gap of 0.39 eV. This compound’s optical response occurs in the infrared, visible regions, and at higher energies its dielectric sign is negative. The Plasmon oscillations have occurred in 20 eV, and its refraction index shifts to zero in 18 eV.
Źródło:
Archives of Metallurgy and Materials; 2023, 68, 1; 331--338
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quantum Chemical Study of Aminonitrocyclopentanes as Possible High Energy Density Materials (HEDMs)
Autorzy:
Bai, J.
Chi, W. J.
Li, L. L.
Yan, T.
Wen, X. E.
Li, B. T.
Wu, H. S.
Ma, F. L.
Powiązania:
https://bibliotekanauki.pl/articles/358101.pdf
Data publikacji:
2013
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
cyclopentane derivatives
high energy density materials
impact sensitivity
quantum chemistry
DFT
available free space
Opis:
Nitro and amine groups were introduced into the cyclopentane skeleton, and the heats of formation, detonation performance, bond dissociation energies, and impact sensitivity for these aminonitrocyclopentanes were calculated in detail at the B3LYP/6-311G** level. The results show that all of the derivatives have negative heats of formation, which are influenced by the position of the substituent groups. Their stabilities were estimated and analyzed according to their bond dissociation energies and calculated characteristic H50 values. Most of the compounds were found to have a lower impact sensitivity than HMX. Furthermore, the detonation velocities and detonation pressures were predicted via the Kamlet-Jacobs equation. Of all these aminonitrocyclopentanes, E has the best detonation properties (ρ = 2.05 g/cm3, D = 9.11 m/s, P = 39.62 GPa) and can be considered as a candidate high energy density material.
Źródło:
Central European Journal of Energetic Materials; 2013, 10, 4; 467-480
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of continuous change of α parameter in the interpolated DFT algorithm for cosα(X) windows
Autorzy:
Barczentewicz, S.
Powiązania:
https://bibliotekanauki.pl/articles/114624.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
DFT analysis
interpolated DFT
estimation of frequency channel number
cosα(X) windows
Opis:
Currently known IpDFT algorithms use the cosα(X) windows with the step change of the window’s order. This work presents IpDFT method designed for the signal analyzed with cosα(X) window, which allows continuous change of the window’s parameter α, so that a full regulation of the sidelobes position becomes possible. Proposed algorithm is a generalization of known IpDFT solutions for cosα(X) windows.
Źródło:
Measurement Automation Monitoring; 2015, 61, 4; 90-91
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Atomic scale study of silver sulfide leaching with cyanide and thiourea
Autorzy:
Bernaola-Flores, Roxana
Silva-Quiñones, Dhamelyz
Balbuena, Perla B.
Rodríguez-Reyes, Juan Carlos F.
Tarazona-Vasquez, Francisco
Powiązania:
https://bibliotekanauki.pl/articles/109763.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
leaching
cyanidation
thioureation
DFT
cluster models
Ag2S
Opis:
Understanding of atomic scale interactions of molecular species with mineral surfaces is needed to bring about mineral processing innovation. In this regard, Density Functional Theory (DFT) methods are well suited. In this work, the outcome of leaching synthetic acanthite –a surrogate for a silver-containing sulfide ore- with both cyanide ion and thiourea are studied with DFT considering solvent effects. The results are correlated to the experimental percentage of silver extracted with each of the leaching agents under similar conditions of molar concentration, temperature and percentage of solids. Our calculations show both leaching reactions to be exergonic and of the same order of magnitude in Gibbs energy of reaction than values determined from thermodynamic tables. Also, less favorable Gibbs reaction energies are obtained for cyanidation in absence of oxygen and thioureation in absence of Fe(II) highlighting the impact of oxidants on the exergonicity of the respective global leaching reactions. Finally, analyzing the percentage of silver extracted from acanthite and the absolute value of Gibbs energies of the respective reaction, we conclude that the more exergonic a leaching reaction, the higher percentage of silver is extracted from acanthite, provided that there is no kinetic control of each of the leaching reactions.
Źródło:
Physicochemical Problems of Mineral Processing; 2019, 55, 4; 969-980
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza metrologiczna interpolacji DFT metodą uzupełniania zerami
Metrological analysis of the DFT padding zeros interpolation method
Autorzy:
Borkowski, J.
Mroczka, J.
Powiązania:
https://bibliotekanauki.pl/articles/155961.pdf
Data publikacji:
2007
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
uzupełnianie zerami
interpolacja DFT
analiza sygnału wieloczęstotliwościowego
estymacja widma
padding zeros
DFT interpolation
multi-frequncy signal analysis
spectrum estimation
Opis:
Praca przedstawia analizę metrologiczną metody estymacji parametrów sygnału będącego sumą składowych sinusoidalnych wykorzystującej technikę okien danych i dyskretnego przekształcenia Fouriera (DFT) przy uzupełnianiu próbek sygnału próbkami zerowymi - tzw. metody uzupełniania zerami (ang. padding zeros). Przeprowadzona analiza metrologiczna prezentuje zależności na maksymalne błędy estymacji amplitud i częstotliwości składowych oscylacji sinusoidalnych w zależności od liczby dodawanych próbek zerowych i charakterystyki częstotliwościowej na przykładzie okna trójkątnego.
The paper presents the metrological analysis the parameters estimation method of signal being the sum of sinusoid components, used data windows technique and discrete Fourier transform (DFT) with padding signal proboes by zeros probes - so-called padding zeros method. Realized metrological analysis describes the dependences for maximum estimation errors of amplitudes and frequencies of component sinusoidal oscillaations as a function of the number of zero samples, frequency characteristic of data window on the triangle window example.
Źródło:
Pomiary Automatyka Kontrola; 2007, R. 53, nr 9 bis, 9 bis; 127-129
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Błędy metody LIDFT dla klasycznych okien danych
Errors of the LIDFT method for classic data windows
Autorzy:
Borkowski, J.
Mroczka, J.
Powiązania:
https://bibliotekanauki.pl/articles/153710.pdf
Data publikacji:
2007
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
uzupełnianie zerami
interpolacja DFT
analiza sygnału wieloczęstotliwościowego
estymacja widma
LIDFT
padding zeros
DFT interpolation
multi-frequncy signal analysis
spectrum estimation
Opis:
Praca przedstawia rozwinięcie metody liniowej interpolacji dyskretnego przekształcenia Fouriera (LIDFT) wykorzystujące klasyczne okna danych oraz technikę uzupełniania zerami, dobrze znane z analizy widma z użyciem algorytmu FFT. Wykorzystanie klasycznych okien danych w miejsce specjalnie dedykowanego dla metody LIDFT okna parametrycznego daje bardziej różnorodne możliwości wykorzystania metody LIDFT w analizie sygnału wieloczęstotliwościowego.
Development of the discrete Fourier transform linear interpolation method (LIDFT) with using classical data windows and zero padding technique well-known from spectrum analysis with FFT is presented in the paper. Using classical data windows instead of parametric data window special dedicated for LIDFT method gives wide-range possibilities of the using LIDFT method in the multifrequency signal analysis.
Źródło:
Pomiary Automatyka Kontrola; 2007, R. 53, nr 9 bis, 9 bis; 108-111
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of sine-wave frequency estimation methods in respect of speed and accuracy for a few observed cycles distorted by noise and harmonics
Autorzy:
Borkowski, J.
Kania, D.
Mroczka, J.
Powiązania:
https://bibliotekanauki.pl/articles/220583.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
DFT spectrum interpolation
short-time frequency estimation
statistical analysis
Prony LS
TLS
ESPRIT
Opis:
The paper deals with frequency estimation methods of sine-wave signals for a few signal cycles and consists of two parts. The first part contains a short overview where analytical error formulae for a signal distorted by noise and harmonics are presented. These formulae are compared with other accurate equations presented previously by the authors which are even more accurate below one cycle in the measurement window. The second part contains a comparison of eight estimation methods (ESPRIT, TLS, Prony LS, a newly developed IpDFT method and four other 3-point IpDFT methods) in respect of calculation time and accuracy for an ideal sine-wave signal, signal distorted by AWGN noise and a signal distorted by harmonics. The number of signal cycles is limited from 0.1 to 3 or 5. The results enable to select the most accurate/fastest estimation method in various measurement conditions. Parametric methods are more accurate but also much slower than IpDFT methods (up to 3000 times for the number of samples equal to 5000). The presented method is more accurate than other IpDFT methods and much faster than parametric methods, which makes it possible to use it as an alternative, especially in real-time applications.
Źródło:
Metrology and Measurement Systems; 2018, 25, 2; 283-302
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Continuous and discontinuous linear approximation of the window spectrum by least squares method
Autorzy:
Borkowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/221777.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
data window
spectrum approximation
interpolated DFT
LIDFT
spectrum estimation
zero padding
Opis:
This paper presents the general solution of the least-squares approximation of the frequency characteristic of the data window by linear functions combined with zero padding technique. The approximation characteristic can be discontinuous or continuous, what depends on the value of one approximation parameter. The approximation solution has an analytical form and therefore the results have universal character. The paper presents derived formulas, analysis of approximation accuracy, the exemplary characteristics and conclusions, which confirm high accuracy of the approximation. The presented solution is applicable to estimating methods, like the LIDFT method, visualizations, etc.
Źródło:
Metrology and Measurement Systems; 2011, 18, 3; 379-390
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Interpolated-DFT-Based Fast and Accurate Amplitude and Phase Estimation for the Control of Power
Autorzy:
Borkowski, J.
Kania, D.
Powiązania:
https://bibliotekanauki.pl/articles/221570.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
control of power
grid signal
amplitude and phase estimation
renewable energy
interpolated DFT
maximum decay side-lobes windows
Opis:
Quality of energy produced in renewable energy systems has to be at the high level specified by respective standards and directives. One of the most important factors affecting quality is the estimation accuracy of grid signal parameters. This paper presents a method of a very fast and accurate amplitude and phase grid signal estimation using the Fast Fourier Transform procedure and maximum decay side-lobes windows. The most important features of the method are elimination of the impact associated with the conjugate’s component on the results and its straightforward implementation. Moreover, the measurement time is very short ‒ even far less than one period of the grid signal. The influence of harmonics on the results is reduced by using a bandpass pre-filter. Even using a 40 dB FIR pre-filter for the grid signal with THD ≈ 38%, SNR ≈ 53 dB and a 20‒30% slow decay exponential drift the maximum estimation errors in a real-time DSP system for 512 samples are approximately 1% for the amplitude and approximately 8.5・10‒2 rad for the phase, respectively. The errors are smaller by several orders of magnitude with using more accurate pre-filters.
Źródło:
Metrology and Measurement Systems; 2016, 23, 1; 13-26
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Minimization of maximum errors in universal approximation of the unit circle by a polygon
Autorzy:
Borkowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/221779.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
unit circle
approximation by polygon
LIDFT
interpolated DFT
zero padding
Opis:
This paper presents a universal approximation of the unit circle by a polygon that can be used in signal processing algorithms. Optimal choice of the values of three parameters of this approximation allows one to obtain a high accuracy of approximation. The approximation described in the paper has a universal character and can be used in many signal processing algorithms, such as DFT, that use the mathematical form of the unit circle. One of the applications of the described approximation is the DFT linear interpolation method (LIDFT). Applying the results of the presented paper to improve the LIDFT method allows one to significantly decrease the errors in estimating the amplitudes and frequencies of multifrequency signal components. The paper presents the derived formulas, an analysis of the approximation accuracy and the region of best values for the approximation parameters.
Źródło:
Metrology and Measurement Systems; 2011, 18, 3; 391-402
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
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