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Tytuł:
Investigation of supra-harmonics through signal processing methods in smart grids
Autorzy:
Yalcin, T.
Ozdemir, M.
Kostyla, P.
Leonowicz, Z.
Powiązania:
https://bibliotekanauki.pl/articles/136245.pdf
Data publikacji:
2017
Wydawca:
EEEIC International Barbara Leonowicz Szabłowska
Tematy:
ensemble empirical mode decomposition
power quality
Fourier analysis
Short Time Fourier Transformation
Opis:
Nowadays supra-harmonic distortion studies are gaining attention day by day in power quality research area. When handling communication systems especially Power Line Carrier (PLC) systems in frequency range 2-150 kHz, they are suitable for causing electromagnetic interference (EMI) to other systems. This study shows results of analysis employing advanced method called ensemble empirical mode decomposition (EEMD) to describe supra-harmonic distortion. Unlike the traditional method (short time fourier transform-STFT), EEMD gives extensive representation for supra-harmonic components.
Źródło:
Transactions on Environment and Electrical Engineering; 2017, 2, 2; 80-85
2450-5730
Pojawia się w:
Transactions on Environment and Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pattern Recognition Methods for Detecting Voltage Sag Disturbances and Electromagnetic Interference in Smart Grids
Autorzy:
Yalcin, T.
Ozdemir, M.
Powiązania:
https://bibliotekanauki.pl/articles/136160.pdf
Data publikacji:
2016
Wydawca:
EEEIC International Barbara Leonowicz Szabłowska
Tematy:
C4.5 decision trees
electromagnetic interference
feature extraction
hilbert huang transform
power quality disturbance
smart grids
support vector machines
Opis:
Identification of system disturbances, detection of them guarantees smart grids power quality (PQ) system reliability and provides long lasting life of the power system. The key goal of this study is to find the best accuracy of identification algorithm for non-stationary, non-linear power quality disturbances such as voltage sag, electromagnetic interference in smart grids. PQube, power quality and energy monitor, was used to acquire these distortions. Ensemble Empirical Mode Decomposition is used for electromagnetic interference reduction with first intrinsic mode function. Hilbert Huang Transform is used for generating instantaneous amplitude and instantaneous frequency feature of real time voltage sag power signal. Outputs of Hilbert Huang Transform is intrinsic mode functions (IMFs), instantaneous frequency (IF), and instantaneous amplitude (IA). Characteristic features are obtained from first IMFs, IF, and IA. The six features—, the mean, standard deviation,skewness, kurtosis of both IF and IA are then calculated. These features are normalized along with the inputs classifiers. The proposed power system monitoring system is able to detect power system voltage sag disturbances and capable of recognize electromagnetic interference component. In this study based on experimental studies, Hilbert Huang Transform based pattern recognition technique was used to investigate power signal to diagnose voltage sag and in power grid. Support Vector Machines and C4.5 Decision Tree were operated and their achievements were matched for precision and CPU timing. According to the analysis, decision tree algorithm without dimensionality reduction produces the best solution.
Źródło:
Transactions on Environment and Electrical Engineering; 2016, 1, 3; 86-93
2450-5730
Pojawia się w:
Transactions on Environment and Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Photocatalytic Activity of $TiO_2$ Powders Synthesized by Supercritical Gas Antisolvent Method
Autorzy:
Tuncer, M.
Ozdemir, B.
Powiązania:
https://bibliotekanauki.pl/articles/1293650.pdf
Data publikacji:
2014-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
82.33.De
Opis:
Synthesis of nanocrystalline, spherical, and anatase type $TiO_2$ photocatalyst were performed by supercritical gas antisolvent process in the range of 50-150C and 100-150 bar. As-prepared samples were calcined at 500C and characterized by X-ray diffraction, scanning electron microscopy, Brunauer-Emmett-Teller method, differential thermal analysis/thermal gravimetry. In X-ray diffraction analysis, the anatase crystalline phase of titanium dioxide has been detected. The mean crystalline size of powders is about 13 nm. The photoactivity test of the powders was evaluated by the photodegradation of aqueous RR 180 (reactive red 180) solution under UV light. While the photocatalytic performance of $TiO_2$ powders (Brunauer-Emmett-Teller surface area of 69.2 $m^2$/g) produced at 150 bar and 150C was found to be 98%, only 25% degradation was observed with powder produced at 150 bar and 100°C. Results showed that the powder properties and photocatalytic activity can be tuned by controlling the supercritical conditions such as temperature and pressure.
Źródło:
Acta Physica Polonica A; 2014, 125, 2; 608-610
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Recognition of Weave Patterns of Striped Fabrics Using Optical Coherence Tomography
Rozpoznawanie wzorów splotów tkanin w paski przy użyciu optycznej tomografii koherencyjnej
Autorzy:
Sabuncu, M.
Özdemir, H.
Powiązania:
https://bibliotekanauki.pl/articles/234318.pdf
Data publikacji:
2018
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
optical coherence tomography
striped weave patterns recognition
woven fabric
plain weave
twill weave
optyczna tomografia koherencyjna
rozpoznawanie wzorów splotów paskowych
tkanina
prosty splot
splot diagonalny
Opis:
The recognition of woven fabric repeat by conventional techniques is labour intensive. In general, woven fabric repeat identification is accomplished automatically by employing complex algorithms and techniques. These algorithms may, however, occasionally fail, especially when dealing with high complexity texture patterns, structures, figures and colours. Optical coherence tomography (OCT) has the capability of taking high resolution images via contactless measurements. In this paper we apply the spectral domain optical coherence tomography imaging technique for identifying striped woven fabric repeat automatically. OCT scans corresponding to four different fabrics, from which the weave matrixes were recognised, are reported in this study. Automatic identification of weave patterns of striped fabrics was accomplished non-destructively by employing optical coherence tomography.
Rozpoznanie powtórzenia tkaniny za pomocą konwencjonalnych technik jest pracochłonne. Ogólnie rzecz biorąc, identyfikacja powtórzenia tkaniny jest przeprowadzana automatycznie przez zastosowanie złożonych algorytmów i technik. Algorytmy te mogą jednak czasami zawieść, szczególnie w przypadku bardzo złożonych wzorów tekstur, struktur, figur i kolorów. Optyczna tomografia koherencyjna (OCT) ma zdolność wykonywania zdjęć o wysokiej rozdzielczości za pomocą pomiarów bezstykowych. W artykule zastosowano technikę obrazowania optycznego tomografii koherencji spektralnej do automatycznego rozpoznawania powtórzeń tkanin w paski. W badaniu przedstawiono skany OCT odpowiadające czterem różnym materiałom, z których rozpoznano matryce splotu. Automatyczna identyfikacja wzorów splotów tkanin w paski została przeprowadzona w sposób niedestrukcyjny dzięki zastosowaniu optycznej tomografii koherencyjnej.
Źródło:
Fibres & Textiles in Eastern Europe; 2018, 3 (129); 98-103
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of Tensile Properties of Aluminum 6082-T6 Alloys Joined by Cold Metal Transfer Method by Using Different Working Time
Autorzy:
Ozsarac, U.
Işik, Ş.
Varol, F.
Emin Unat, M.
Özdemir, C.
Aslanlar, S.
Powiązania:
https://bibliotekanauki.pl/articles/1031098.pdf
Data publikacji:
2017-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.20.VJ
81.70.BT
Opis:
In this study, Aluminium 6082-T6 plates having 1.0 mm thickness were joined by magnesium-based (AlMg5) wire in cold metal transfer technique. The specimens were prepared in butt joint form. Argon was used as shielding gas and joining operations were done at gas flow speed of 13 l/min. The joining operations were carried out during four different working times of 25, 30, 35, 40 and 45 seconds. Tensile properties of joints were determined and macro-structures of joints were investigated in order to evaluate the joinability of Aluminium 6082-T6 alloy by cold metal transfer technique. Finally, the micro-hardness values of specimens were measured.
Źródło:
Acta Physica Polonica A; 2017, 132, 3; 705-707
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physical, chemical, sensorial and bioactive characteristics of local and standard pear cultivars in Turkey
Fizyczne, chemiczne, sensoryczne i bioaktywne cechy lokalnych i standardowych odmian gruszy w Turcji
Autorzy:
Ozdemir, Y.
Akcay, M.E.
Ercisli, S.
Ozkan, M.
Ozyurt, U.
Powiązania:
https://bibliotekanauki.pl/articles/11543421.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Opis:
Some important physical (fruit external color, flesh firmness, fruit size, fruit weight, fruit volume, stone cell), chemical (ash, pH, soluble solid content, sugars, titratable acidity), sensorial (appearance, firmness, sweetness, grittiness, juiciness and overall quality) and bioactive (antioxidant capacity, phenolic compounds, total phenolic content, vitamin C) characteristics of eleven local and one standard pear cultivar were investigated. All cultivars were found in national pear repository in Ataturk Horticultural Central Research Institute in Turkey. Fruit weight of pears was between 56.80 g (‘Kirmizi Biber’) and 128.94 g (‘Erkenci Uzun Sap’). Results showed that ‘Bağ’ cultivar had the highest sensorial scores (8.4 overall quality) and antioxidant capacity (21.44 mg ascorbic acid equivalent∙g-1). Stone cell were found between 63.65 (‘Gümüşhane’) and 81.65 mg dry weight∙g-1 (‘Maslovka’). The cultivar ‘Orak’ showed the highest chlorogenic acid (185.98 mg∙kg-1) and epicatechin (108.26 mg∙kg-1) content.
Badano niektóre ważne cechy fizyczne (barwa zewnetrzna owoców, zwartość miąższu, masa owoców, rozmiar owoców, pestka), chemiczne (popiół, pH, zawartość rozpuszczalnych substancji stałych, cukry, kwasowość oznaczona), sensoryczne (wygląd, zwartość, słodkość, chropowatość, soczystość i ogólna jakość) oraz bioaktywne (zdolność antyoksydacyjna, związki fenolowe, całkowita zawartość związków fenolowych, witamina C) jedenastu lokalnych i jednej standardowej odmiany gruszy. Wszystkie odmiany pochodziły z krajowego repozytorium w Centralnym Ogrodniczym Instytucie Badawczym w Ataturk w Turcji. Masa owoców wynosiła od 56,80 g (‘Kirmizi Biber’) do 128,94 g (‘Erkenci Uzun Sap’). Na podstawie wyników badań wnioskuje się, że odmiana ‘Bağ’ miała najwyższe noty sensoryczne (ogólna jakość 8,4) i zdolność antyoksydacyjną (21,44 mg ekwiwalent kwasu askorbinowego∙g-1). Sucha masa pestki wynosiła 63,65 (‘Gümüşhane’) i 81.65 mg∙g-1 (‘Maslovka’). Odmiana ‘Orak’ wykazała największą zawartość kwasu chlorogenowego (185,98 mg∙kg-1) i epikatechiny (108,26 mg∙kg-1).
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2016, 15, 3; 127-139
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improved flotation of heat treated lignite with saline solutions containing mono and multivalent ions
Autorzy:
Ozdemir, O.
Ersoy, O. F.
Guven, O.
Turgut, H.
Cinar, M.
Çelik, M. S.
Powiązania:
https://bibliotekanauki.pl/articles/109640.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
flotation
heat treatment
lignite
DLVO
Saline Solutions
Opis:
Flotation of lignites is inherently difficult. However, pre-heat treatment of coal is also known to make coal surfaces more hydrophobic possibly through removal of water entrapped in the structure of coal. In this context, the objective of this study was, therefore, to determine changes in the hydrophobicity of some lignites under moderately controlled heat treatment and correlate the flotation response of lignites in different salt solutions of NaCl, KCl, CaCl2, and MgCl2 without using any reagent. The results of flotation tests suggested that under the present test conditions, it was possible to float thermally pre-treated lignite samples of partially hydrophobic character in salt solutions in the absence of collector and frother. In addition, the effect of heat treatment on hydrophobicity, and in turn flotation was explained by a theoretical model based on extended DLVO interactions to quantify the effects of both heat treatment and salt concentration on bubble-particle interactions. The results of theoretical modeling suggested that the removal of hydrogen containing groups from coal surfaces significantly contribute to the electrical double layer and hydrophobic forces that govern the magnitude of energetic barrier and also the extent of bubble-particle attachment.
Źródło:
Physicochemical Problems of Mineral Processing; 2018, 54, 4; 1070-1082
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical Solution of Fractional Black-Scholes Equation by Using the Multivariate Padé Approximation
Autorzy:
Özdemir, N.
Yavuz, M.
Powiązania:
https://bibliotekanauki.pl/articles/1031286.pdf
Data publikacji:
2017-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
02.60.-x
02.30.Mv
02.30.Jr
Opis:
In this study, a new application of multivariate Padé approximation method has been used for solving European vanilla call option pricing problem. Padé polynomials have occurred for the fractional Black-Scholes equation, according to the relations of "smaller than", or "greater than", between stock price and exercise price of the option. Using these polynomials, we have applied the multivariate Padé approximation method to our fractional equation and we have calculated numerical solutions of fractional Black-Scholes equation for both of two situations. The obtained results show that the multivariate Padé approximation is a very quick and accurate method for fractional Black-Scholes equation. The fractional derivative is understood in the Caputo sense.
Źródło:
Acta Physica Polonica A; 2017, 132, 3; 1050-1053
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Study of the Properties of Paper Sized with Styrene-Butyl Acrylate Copolymers
Autorzy:
Özdemir, M.
Özdemir Alp, M.
Aytaç, A.
Deniz, V.
Powiązania:
https://bibliotekanauki.pl/articles/1031427.pdf
Data publikacji:
2017-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
68.35.bm
68.47.Mn
81.05.Qk
Opis:
In this study, styrene 70 wt.%-butyl acrylate 30 wt.% copolymer-based surface-sizing materials were synthesized using semi-batch emulsion polymerization and applied on the paper. Four different emulsifiers, with different ethylene oxide numbers, at ratios of 10%, 7% and (2, 2'-azobis (2-methylpropionamidine) dihydrochloride (A)) as initiator were used for emulsion polymerization. Eight different copolymers were synthesized. Synthesized copolymers were used as surface sizing agents for the paper surface. Ion exchange capacity, pH, Fourier transform infrared spectroscopy, differential scanning calorimetry and thermal gravimetric analysis were used for the characterization of the copolymer properties. Contact angle measurements, Cobb test, and scanning electron microscopy analysis were carried out to determine the surface properties of the paper samples. Presence of copolymer formations was proven with the Fourier transform infrared analysis. Contact angle measurements of the copolymer sized paper surface have shown hydrophobic behaviour in samples, with the exception of E-3/7/A sample. The lowest Cobb value was observed for E-2/7/A sample. The highest thermal stability was also observed for E-2/7/A sample. The scanning electron micrographs show that the paper loses its fibrous structure and it is seen that the copolymer adheres to the fibrous tissue.
Źródło:
Acta Physica Polonica A; 2017, 132, 3; 1098-1101
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation into the surface properties of papers sized with styrene-acrylate-cationic monomer based terpolymers
Autorzy:
Özdemir, M.
Aytaç, A.
Deniz, V.
Powiązania:
https://bibliotekanauki.pl/articles/1050997.pdf
Data publikacji:
2017-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
68.47.Pe
82.35.-x
Opis:
In this study, styrene(St)/2-ethyl hexyl acrylate(2-EHA) based surface sizing materials were developed with four different cationic monomers (CM), namely diallyldimethyl ammonium chloride (DADMAC), [2-(methacryloyloxy) ethyl] trimethylammonium chloride (MATMAC), [3-(methacryloylamino) propyl]-trimethyl ammonium chloride (MAPTAC), (viniylbenzyl) trimethyl-ammonium chloride (VBTMAC). Ternary polymerization was realized with emulsion polymerization, by using 2,2'-azobis (2-methylpropionamidine) dihydrochloride (A) as initiator. Thermal properties of the synthesized terpolymers were determined with differential scanning calorimeter and thermal gravimetric analysis. Differential scanning calorimeter results showed that glass transition temperature (T_{g}) values of polymers were not dependent on the types of cationic monomers, and were found about 44-45°C. Ion exchange capacities of the terpolymers were determined. The latexes produced were used as sizing materials for paper surface treatment. Then critical surface properties of the papers sized such as water resistance (Cobb value) and contact angle were measured. It was found that the best, i.e. the lowest Cobb results were obtained when MATMAC and MAPTAC cationic monomers were used in terpolymers.
Źródło:
Acta Physica Polonica A; 2017, 131, 1; 178-181
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impacts of organic and organo-mineral fertilizers on total phenolic, flavonoid, anthocyanin and antiradical activity of Okuzgozu (Vitis vinifera L.) grapes
Autorzy:
Ozdemir, G.
Kitir, N.
Turan, M.
Ozlu, E.
Powiązania:
https://bibliotekanauki.pl/articles/11869154.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
plant cultivation
Okuzgozu cultivar
Vitis vinifera
fruit bush
antiradical activity
anthocyanin
flavonoids
total phenolics
plant fertilization
organic-mineral fertilization
organic-mineral fertilizer
fertilizer effect
Opis:
A present study was conducted to determine the impacts of organic and organo-mineral fertilizers on total phenolic, flavonoid, anthocyanin and antiradical activities of Okuzgozu (Vitis vinifera L. cv.) grapes. Study treatments included organic fertilizers (green fertilizer (vetch), green fertilizer (barley), green fertilizer (vetch + barley), farmyard manure, bactoguard, lifebac NP, humanica) and organo-mineral fertilizers (bactolife quality organo, bactolife high organo, bactolife high organo, bactolife super organo power). The control treatment did not receive any application. The organic, and organo-mineral fertilizers applications positively influenced the total phenolic, flavonoid and anthocyanin productions, and antiradical activity (DPPH). The maximum total phenolic production was significantly higher under Bactolife Super Organo Power (785.49 µg GAE/mg in pulp) application, followed by those under bactolife high organo 5-5-5 (780.40 µg GAE/mg in pulp). The total flavonoid production in berry skin (34.26 µg QUE/mg), pulp (137.00 µg QUE/mg) and seed (23.52 µg QUE/mg) were the highest under the bactolife super organo power whereas the antiradical activities (DPPH) of berry pulp and seed were at the maximum level under the bactolife quality organo treatment. Total anthocyanin content of berry skin and pulp of Okuzgozu grape cultivar was the highest under the organic humanica.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2018, 17, 3; 91-100
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Role of Hydrostatic Pressure in Electrical Properties of Au/n-GaAs Schottky diodes with Substituted Polyaniline Interfacial Layer
Autorzy:
Özdemir, A.
Abdolahpour Salari, M.
Kökce, A.
Uçar, N.
Powiązania:
https://bibliotekanauki.pl/articles/1031654.pdf
Data publikacji:
2017-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
73.40.Kp
73.20.At
74.62.Fj
Opis:
Au/polymer P2ClAn(H₃BO₃)/n-GaAs Schottky barrier diodes, where P2ClAn stands for poly(2-chloroaniline), have been fabricated. To fabricate Schottky diodes with polymer interface, n-type GaAs wafer was used. The P2ClAn polymer solution was applied on the front face of the n-GaAs wafer by a pipette. The P2ClAn emeraldine salt was chemically synthesized by using boric acid (H₃BO₃). Schottky diode parameters, such as ideality factor, barrier height and series resistance have been measured, as functions of hydrostatic pressure, using the current-voltage technique. The ideality factor values of Au/P2ClAn/n-GaAs Schottky barrier diodes have decreased from 3.38 to 3.01, the barrier height has increased from 0.653 to 0.731 eV at 0.36 kbar and series resistances were ranging from 14.95 to 14.69. The results obtained from I-V characteristics of Au/P2ClAn/n-GaAs Schottky barrier diodes show that pressure treatment improves the rectifying properties of the diodes. These diodes can be used as pressure-sensitive capacitors, due to pressure-dependence of diode parameters.
Źródło:
Acta Physica Polonica A; 2017, 132, 3; 1118-1121
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of particle shape properties on selective separation of chromite from serpentine by flotation
Autorzy:
Guven, Onur
Serdengecti, M. Tayhan
Tunc, Berivan
Ozdemir, Orhan
Karaagaclioglu, Ibrahim E.
Çelik, Mehmet S.
Powiązania:
https://bibliotekanauki.pl/articles/1845205.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
chromite
serpentine
morphology
flotation
mineral mixtures
Opis:
Although many studies have been conducted on the morphological variations and its effects on flotation recoveries of a single mineral system, a systematic study for the flotation behavior of mixtures of minerals has not dwelled much. In this study, th flotation behavior of chromite and serpentine minerals was investigated to distinguish and isolate the contribution of morphology in single and binary systems. For this purpose, the shape analyses for the minerals ground as single and mixture were performed, and their flotation behaviors determined with the micro-flotation experiments. Additionally, the zeta potential measurements were carried out in the presence of sodium oleate as a collector. The shape analysis of the ground samples showed that while the roundness values of chromite and serpentine (gangue) minerals as single were quite different, the particle shape of chromite favored serpentine in the mixture system which in turn suggested that the mineral with the high hardness value dominates the shape characteristics in binary grinding conditions. Accordingly, while the flotation characteristics of chromite in the mixture followed the same trend with the flotation of a single chromite system as a function of particle shape, almost a reverse trend was obtained for the shape and flotation of serpentine in the mixture compared to a single serpentine system. Thus, at roundness values of chromite particles from 0.797 to 0.732, the flotation recoveries of chromite in the mixture increased from 51.0% to 75.4%. On the other hand, likewise chromite, the flotation recoveries of serpentine increased from 20.0% to 37.3% proportional to the roundness range of 0.757 and 0.709. These findings in turn showed that the grinding conditions dictate the soft component to be monitored by the harder and denser component which dominates the angularity and floatability of the mixture.
Źródło:
Physicochemical Problems of Mineral Processing; 2020, 56, 5; 818-828
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Riesz triple probabilisitic of almost lacunary Cesáro C111 statistical convergence of Γ3 defined by a Musielak Orlicz function
Autorzy:
Esi, Ayhan
Subramanian, Nagarajan
Ozdemir, M. Kemal
Powiązania:
https://bibliotekanauki.pl/articles/1076148.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Cesáro C111 - statistical convergence
Orlicz function
Riesz space
analytic sequence
entire sequence
statistical convergence
triple sequences
Opis:
In this paper we study the concept of almost lacunary statistical Cesáro of Γ3 over probabilistic p- metric spaces defined by Musielak Orlicz function. Since the study of convergence in PP-spaces is fundamental to probabilistic functional analysis, we feel that the concept of almost lacunary statistical Cesáro of Γ3 over probabilistic p- metric spaces defined by Musielak in a PP-space would provide a more general framework for the subject.
Źródło:
World Scientific News; 2019, 116; 115-127
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heterocoagulation of hydrophobized particulates by ionic surfactants
Autorzy:
Çelik, M.
Ozdemir, O.
Powiązania:
https://bibliotekanauki.pl/articles/110782.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
heterocoagulation
coal
flotation
adsorption
ionic surfactants
Opis:
Hydrophobic particulates, i.e. bubbles, precipitates, and coal particles are shown to exhibit similar isoelectric point (iep) values in the presence of ionic surfactants. While coal in anionic surfactant solutions exhibits negative zeta potentials in the entire pH region, coal in cationic surfactant solutions undergoes a charge reversal in alkaline pH. Adsorption and zeta potential measurements together with previously published results indicate that ionic surfactants adsorb on coal through hydrophobic bonding driven by entropy. Physicochemical similarities in the adsorption mechanisms of ionic surfactants onto the bubbles, precipitates, and coal particles are proposed to be responsible for the observed iep values and also heterocoagulation phenomena.
Źródło:
Physicochemical Problems of Mineral Processing; 2018, 54, 1; 124-130
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 16

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