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Wyszukujesz frazę "Yılmaz, E." wg kryterium: Autor


Tytuł:
$K_{β}//K_{α}$ X-Ray Intensity Ratios for Co, Ni, Cu, and~Zn in Phthalocyanines Complexes
Autorzy:
Baltas, H.
Ertugral, B.
Kantar, C.
Sasmaz, S.
Yılmaz, E.
Cevik, U.
Powiązania:
https://bibliotekanauki.pl/articles/1504553.pdf
Data publikacji:
2011-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
32.30.Rj
32.80.-t
31.70.-f
Opis:
The $K_{β} // K_{α}$ X-ray intensity ratios of Co, Ni, Cu and Zn in metalophthalocyanines complexes have been studied. Co, Ni, Cu and Zn elements have been excited by using 59.5 keV photons emitted by 50 mCi $\text{}^{241}Am$ radioactive source. K X-rays emitted by samples have been counted by a Si(Li) detector with resolution 0.16 keV at 5.9 keV. We have found that $K_{β} // K_{α}$ X-ray intensity ratios of Co, Ni, Zn, and Cu complexes have changed depending on chemical structures of Co, Ni, Zn and Cu. The measured values have been compared with the theoretical predictions and experimental values of pure elements.
Źródło:
Acta Physica Polonica A; 2011, 119, 6; 764-768
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Advances in reducing large volumes of environmentally harmful mine waste rocks and tailings
Postępy w redukcji objętości szkodliwych dla środowiska odpadów górniczych i przeróbczych
Autorzy:
Yilmaz, E.
Powiązania:
https://bibliotekanauki.pl/articles/1849689.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN
Tematy:
odpady górnicze
skała płonna
minimalizacja ilości odpadów
zagrożenia dla środowiska
nowoczesne metody
tailings
waste rocks
waste minimization
environmental hazards
emerging methods
Opis:
A large amount of solid and liquid wastes produced by mines and mills each year needs to be managed and minimized by alternative disposal methods like paste and dry stack. Increasingly strict environmental legislation and cost competitiveness also dictate the utilization of technically suitable, economically viable, environmentally acceptable, and socially responsible techniques. This paper reviews some of these techniques that could potentially reduce large volumes of mine wastes (with a focus on mine tailings and waste rocks) without causing significant environmental hazards. The new emerging techniques such as environmental desulphurization, covers built with sulphide-free tailings, co-disposal of tailings and waste rocks, geotextile tube dewatering, and use of tailings in the cement production and road construction for both industrial and environmental purposes are discussed in terms of waste minimization. The existing methods and approaches for efficient waste treatment and disposal are also discussed in this review paper.
Duża ilość stałych i ciekłych odpadów produkowanych przez kopalnie i zakłady przemysłowe każdego roku powinna zostać zutylizowana i zminimalizowana przez zastosowanie alternatywnych metod składowania, jak na przykład zagęszczanie czy suszenie. Coraz bardziej restrykcyjne ustawodawstwo dotyczące ochrony środowiska oraz kwestia konkurencyjności nakazują z kolei zastosowanie odpowiednich technicznie, rentownych, przyjaznych dla środowiska, jak i odpowiedzialnych społecznie rozwiązań. Praca przedstawia wybrane technologie, które mogą potencjalnie zredukować duże objętości odpadów (w tym odpadów górniczych i skały płonnej) nie tworząc znaczącego zagrożenia dla środowiska. Nowe technologie, takie jak odsiarczanie, zabudowa zwałowisk odsiarczonych odpadów, wspólne składowanie odpadów przeróbczych i skał odpadowych, geowłókninowe rury odwadniające oraz użycie odpadów w produkcji cementu i do budowy dróg - co jest korzystne zarówno dla przemysłu jak i środowiska - są omawiane pod kątem minimalizacji ilości odpadów. Omówione zostały także stosowane obecnie metody i sposoby efektywnego unieszkodliwiania i składowania odpadów.
Źródło:
Gospodarka Surowcami Mineralnymi; 2011, 27, 2; 89-112
0860-0953
Pojawia się w:
Gospodarka Surowcami Mineralnymi
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An alternative method in fixation of tibial transverse fractures by intramedullar nailing : Biomechanical and histopathologic investigation
Autorzy:
Aksakal, B.
Varis, O.
Say, Y.
Kom, M.
Yilmaz, E.
Powiązania:
https://bibliotekanauki.pl/articles/951813.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
bone fracture
intramedular nails
coating
fixation
biomechanics
biomechanika
złamanie kości
powłoka
Opis:
A new method was used in fixation of tibial bone fractures. Intramadular nailing (IMN) has been used into mid-diaphysis on left tibias of New Zeland rabbits (n = 5) via an in vivo work. To enable fixation of fracture, without causing too much screw damage on bone and avoiding malunion, nano- and micro-scale hydroxyapatite (HA) was coated at two ends (25 mm in length) of intramadular nails before implantation. After six weeks of survival period and sacrifizing, biomechanical tests and histopathologic examinations were executed. Such experiments have revealed that good stabilization and hence better fracture union for both treated IMN groups (NHA and MHA) over the standard IMN’. Pull-out tests showed the tensile strengths obtained to be significantly higher for the nano (NHA) and micro scale-MHA coated IMN compared to the uncoated standard IM nailing.
Źródło:
Acta of Bioengineering and Biomechanics; 2013, 15, 2; 81-90
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Artificial Neural Network-Based Estimation of Bremsstarahlung Photon Flux Calculated by MCNPX
Autorzy:
Tekin, H.
Manici, T.
Altunsoy, E.
Yilancioglu, K.
Yilmaz, B.
Powiązania:
https://bibliotekanauki.pl/articles/1031593.pdf
Data publikacji:
2017-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
07.05.Mh
23.20.Nx
87.10.R
Opis:
Bremsstrahlung has an important place in the field of experimental physics, especially for description of photon-matter interaction and for characterization and analysis of materials. Bremsstrahlung photon is created by a high-energy electron, deflected in the electric field of atomic nucleus. Bremsstrahlung is also important for experimental studies, not only in the field of nuclear physics and particle physics but also in the fields of solid state physics, applied physics and astrophysics. In recent years, Monte Carlo simulation has become a widely used method for calculations related to bremsstrahlung. On the other hand, predictions by using artificial neural network can be performed with high accuracy. This study aims at observing variation in the photon flux as unction of target thickness and at processing output data by using an artificial neural network. We achieved a high degree of compatibility between two different methods. This study suggests that artificial neural network is a powerful tool for prediction of Bremsstrahlung and for other scientific problems.
Źródło:
Acta Physica Polonica A; 2017, 132, 3; 967-969
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Investigation on the Mass Attenuation Coefficients of W-VC-C and W-VC-TiC-C Composites for Gamma Radioisotopes
Autorzy:
Tuğrul, A.
Demir, E.
Yılmaz, O.
Sönmez, S.
Öveçoğlu, M.
Büyük, B.
Powiązania:
https://bibliotekanauki.pl/articles/1187451.pdf
Data publikacji:
2016-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
25.20.Dc
81.05.Mh
Opis:
In this study, tungsten-vanadium carbide-graphite and tungsten-vanadium carbide-titanium carbide-graphite composites (W-VC-TiC-C) which can be used in high-tech equipment were investigated against different gamma radioisotopes. The composite materials were produced via mechanical alloying method in two groups; one of them includes 93% tungsten (W), 6% vanadium carbide (VC) and 1% graphite (C) which was synthesized during three different alloying times (6, 12, 24 hours). Other group of the samples were composited as 91% tungsten, 6% vanadium carbide (VC), 2% titanium carbide (TiC) and 1% graphite (C) which has also three different alloying times (6, 12, 24 hours). Gamma transmission technique was used in the experiments to investigate the gamma attenuation properties of the composite materials. Linear and mass attenuation coefficients of the samples were determined in the experiments and theoretical mass attenuation coefficients were calculated using widely acknowledged XCOM computer code. The experimental mass attenuation coefficients and calculated theoretical results were compared and evaluated with each other. Results showed that gamma attenuation coefficients of the composite materials dependent on alloying time. It can be concluded that increasing the tungsten ratio causes higher linear attenuation coefficient which decreases with increasing gamma energies.
Źródło:
Acta Physica Polonica A; 2016, 129, 4; 724-727
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment on Gamma Attenuation Behavior of W-VC-C and W-VC-TiC-C Composites for Co-60 Radioisotope
Autorzy:
Demir, E.
Tugrul, A.
Sonmez, S.
Ovecoglu, L.
Buyuk, B.
Yilmaz, O.
Powiązania:
https://bibliotekanauki.pl/articles/1031587.pdf
Data publikacji:
2017-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
attenuation coefficient
Co-60
radiation shielding material
transmission technique
W-VC-C-TiC composite
Opis:
In this study, tungsten-vanadium carbide-graphite (W-VC-C) and tungsten-vanadium carbide-titanium carbide-graphite composite (W-VC-TiC-C) materials were investigated against Co-60 gamma radioisotope. The composite materials which are used in advanced technological studies and high temperature applications in many various fields especially in the areas of fission and fusion armor materials were produced by mechanical alloying method as in two groups. One of them include 93% tungsten (W), 6% vanadium carbide (VC) and 1% graphite (C) also which has three different alloying times (6-12-24 h). Other group of the samples was composed of 91% tungsten, 6% vanadium carbide (VC), 2% titanium carbide (TiC) and 1% graphite (C) also which has three different alloying times (6-12-24 h) and sintered at 1750°C. Co-60 gamma radioisotope source and gamma transmission technique were used in the experiments to investigate the properties of the composite materials. The mass attenuation coefficients of the samples were determined by using experimental results and theoretical mass attenuation coefficients were calculated from XCOM computer code. It can be concluded that increasing the tungsten ratio causes higher mass attenuation coefficient and the composite materials have provided us benefits better than lead for radiation gamma shielding.
Źródło:
Acta Physica Polonica A; 2017, 132, 3; 830-832
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biofortification and the involved modern approaches
Autorzy:
Athar, T.
Khan, M.K.
Pandey, A.
Yilmaz, F.G.
Hamurcu, M.
Hakki, E.E.
Gezgin, S.
Powiązania:
https://bibliotekanauki.pl/articles/15075.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Źródło:
Journal of Elementology; 2020, 25, 2
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biomechanical comparison of straight DCP and helical plates for fixation of transverse and oblique bone fractures
Autorzy:
Aksakal, B.
Gurger, M.
Say, Y.
Yilmaz, E.
Powiązania:
https://bibliotekanauki.pl/articles/307129.pdf
Data publikacji:
2014
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
unieruchomienie
biomechanika
kości
Straight DC Plate
helical plate
biomechanics
fixation
bone fractures
Opis:
Purpose: Biomechanical comparison of straight DCP and helical plates for fixation of transversal and oblique tibial bone fractures were analyzed and compared to each other by axial compression, bending and torsion tests. Method: An in vitro osteosynthesis of transverse (TF) and oblique bone fracture (OF) fixations have been analysed on fresh sheep tibias by using the DCP and helical compression plates (HP). Results: Statistically significant differences were found for both DCP and helical plate fixations under axial compression, bending and torsional loads. The strength of fixation systems were in favor of DC plating with exception of the TF-HP fixation group under compression loads and torsional moments. The transvers fracture (TF) stability was found to be higher than that found in oblique fracture (OF) fixed by helical plates (HP). However, under torsional testing, compared to conventional plating, the helical plate fixations provided a higher torsional resistance and strength. The maximum stiffness at axial compression loading and maximum torsional strength was achieved at torsional testing for the TF-HP fixations. Conclusion: From in vitro biomechanical analysis, fracture type and plate fixation system groups showed different responses under different loadings. Consequently, current biomechanical analyses may encourage the usage of helical HP fixations in near future during clinical practice for transverse bone fractures.
Źródło:
Acta of Bioengineering and Biomechanics; 2014, 16, 4; 67-74
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bond Strength of Basalt Based Glass-Ceramic Coatings
Autorzy:
Bayrak, G.
Ercenk, E.
Sen, U.
Yilmaz, S.
Powiązania:
https://bibliotekanauki.pl/articles/1194582.pdf
Data publikacji:
2014-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.43.Fs
62.20.-x
61.05.cp
Opis:
In the present study, powders produced from the volcanic basalt rocks were coated on pre-coated AISI 1040 steel with Ni-5% Al bond coat by atmospheric plasma spray coating technique. The coated specimens were characterized by optical microscopy, scanning electron microscopy, metallography and X-ray diffraction. Bonding strength of coatings was evaluated in accordance with the ASTM C-633 method. Coated basalt material from the APS coating system was determined in the glassy amorphous state by X-ray diffraction analysis. The coated samples were heat-treated at 800C for 1-4 h for crystallization. The phases formed in the basalt base glass-ceramic coatings were augite, Fe-diopside, anorthite, and andesine which were detected by X-ray diffraction analysis. Basalt based glass-ceramic coatings include splat, porosity and un-melted particles which were the characteristic of plasma sprayed coatings. Experiment result showed that the crystallization time increase caused the decrease of the bond strengths of the coatings.
Źródło:
Acta Physica Polonica A; 2014, 125, 2; 620-622
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Boride Layer Growth Kinetics of AISI H13 Steel Borided with Nano-Sized Powders
Autorzy:
Karakaş, M. S.
Günen, A.
Kanca, E.
Yilmaz, E.
Powiązania:
https://bibliotekanauki.pl/articles/351842.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
boriding
growth kinetics
activation energy
Opis:
Growth kinetics of boride layers in AISI H13 steel was investigated using the pack boriding method at temperatures of 1073, 1173 and 1273 K (800°C, 900°C and 1000°C) for periods of 2, 4 and 6 h with nano-sized boron (NB) and micron-sized Ekabor II powders as boriding agents. The total thickness of the boride layer (including both FeB and Fe2B) after boriding at 1273 K (1000°C) for 6 h was 103.8 μm and 96.5 μm for the NB and Ekabor II specimens, respectively. X-ray diffraction analysis of the boride layers on the surfaces borided with NB and Ekabor II revealed the presence of FeB and Fe2B phases with sawtooth morphology. The FeB/Fe2B volume ratio was higher in the specimens borided with NB. The thickness of the boride layer (FeB + Fe2B) increased with the increasing boriding temperature and time. The FeB layer in the NB specimen displayed a (002) preferred orientation.
Źródło:
Archives of Metallurgy and Materials; 2018, 63, 1; 159-165
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chemical Effects on the K$\text{}_{β}$/K$\text{}_{α}$ Intensity Ratios in First-Row Transition Element Compounds
Autorzy:
Küçükönder, A.
Büyükkasap, E.
Yilmaz, R.
Şahin, Y.
Powiązania:
https://bibliotekanauki.pl/articles/1994736.pdf
Data publikacji:
1999-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
78.70.-g
82.80.-d
Opis:
Chemical Effects on the K$\text{}_{β}$/K$\text{}_{α}$ X-ray Intensity Ratios for Some First-row Transition Element Compounds Were Studied Experimentally and Calculated. the Vacancies in the K Shell Were Created by 59.5 keV γ rays from an $\text{}^{241}$Am Radioactive Source and Characteristic X-ray Radiation from Sample Was Measured by Using Si(li) and Ge(li) Detectors. the Calculations Were Carried Out Using Brunner's Model. the Calculated Relative K$\text{}_{β}$/K$\text{}_{α}$ X-ray Intensity Ratios Are in Good Agreement with the Present and the Previously Published Experimental Data.
Źródło:
Acta Physica Polonica A; 1999, 95, 2; 243-250
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of flunixin meglumine and meloxicam influence on postoperative and oxidative stress in ovariohysterectomized bitches
Autorzy:
Yilmaz, O.
Korkmaz, M.
Jaroszewski, J.J.
Yazici, E.
Ulutas, E.
Saritas, Z.K.
Powiązania:
https://bibliotekanauki.pl/articles/31619.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
The aim of this study was to compare the effect of flunixin meglumine (FM) and meloxicam (M) on postoperative and oxidative stress in ovariohysterectomized bitches. Twenty four bitches were divided into three groups (n=8 in each) and treated during premedication as follows: FM (2.2 mg/kg, iv, Fluvil, Vilsan, Turkey), M (0.2 mg/kg, sc, Maxicam, Sanovel, Turkey) or 0.9% saline (1 ml, iv, IE, Turkey) - control (C) group. The concentrations of serum cortisol, nitric oxide (NO), malondialdehyde (MDA), antioxidant potential (AOP) and glutation (GSH) were measured in blood samples collected during incision (0 h), closure of incision line (0.5 h) and 1, 2.5, 12 and 24 hours after incision. It was observed that cortisol level was higher at 0.5, 1 and 2.5 h in group C (p < 0.05), 0.5 h in group FM (p < 0.001), and 1 and 2.5 h in group M (p < 0.01), as compared to that determine at 0 h. Group C showed higher cortisol level during 0.5 h (p < 0.05) than that found in the other groups. Group FM displayed lower levels during 1 h (p < 0.01) and 2.5 h (p < 0.05) as compared to those observed in other groups. Concentrations of MDA, AOP and GSH between all the groups did not show any significant differences. MDA level was higher at 0.5 and 1 h in groupM (p < 0.05) than that found in group C and it was the lowest at 2.5 h in group C (p < 0.05). AOP was higher at 2.5 h in group FM and M (p < 0.05) than that observed in group C, and at 12 and 24 h in group M than that found in group C and FM. GSH did not show any significant differences between the groups. NO level in group FM after 12 h was higher (p < 0.05) than that at 0.5, 1 and 24 h. Moreover, NO level was lower at 0.5 (p < 0.01), 1 (p < 0.05) and 24 h (p < 0.05) in group FM than that observed in group C and M. In conclusion, flunixin meglumine decreases cortisol and NO levels more efficiently than meloxicam. Therefore, it is suggested that postoperative stress following ovariohysterectomy may be prevented by flunixin meglumine in bitches.
Źródło:
Polish Journal of Veterinary Sciences; 2014, 17, 3
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Contribution of domestic animals to human economic and social life
Udział zwierząt domowych w życiu gospodarczym i społecznym człowieka
Autorzy:
Kayabasi, E.T.
Yilmaz, O.
Powiązania:
https://bibliotekanauki.pl/articles/29433613.pdf
Data publikacji:
2022
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
domestic animal
pet
sociology
economic benefit
human-animal relationship
Covid-19
Źródło:
Acta Scientiarum Polonorum. Zootechnica; 2022, 21, 1; 29-34
1644-0714
Pojawia się w:
Acta Scientiarum Polonorum. Zootechnica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development of Machinable Glass-Ceramics Produced from Vermiculite
Autorzy:
Önen, U.
Ercenk, E.
Yılmaz, Ş.
Powiązania:
https://bibliotekanauki.pl/articles/1033368.pdf
Data publikacji:
2017-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.05.Pj
Opis:
In this study, machinable glass-ceramics were produced from vermiculite and K₂CO₃, SiO₂, Al₂O₃ and MgF₂ as additives by melting process. The starting materials were mixed together and milled in a mill with alumina ball for 2 h. The mixed powders were melted by aluminum crucible at 1500°C. The melted glass was cast into graphite mold, and then it was exposed to crystallization heat treatment for glass-ceramic transformation. The glass-ceramic samples were characterized with X-ray diffraction analysis, scanning electron microscopy, mechanical tests such as hardness, fracture toughness and machinability test. The results indicate that machinability properties can be obtained from vermiculite based glass-ceramic with some additives.
Źródło:
Acta Physica Polonica A; 2017, 131, 1; 168-170
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electrical Characterization of Interdigitated Humidity Sensors Based on CNT Modified Calixarene Molecules
Autorzy:
Özbek, C.
Culcular, E.
Okur, S.
Yılmaz, M.
Kurt, M.
Powiązania:
https://bibliotekanauki.pl/articles/1400035.pdf
Data publikacji:
2013-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
66.30.je
65.40.gp
65.40.gk
65.40.gd
64.70.fm
64.10.+h
51.10.+y
Opis:
In this study, we report on the optimization and characterization of chloroform soluble calix[4]arene derivative as a humidity sensor based on electrical properties. Due to the fact that calix[4]arene molecules are nonconductive, we modified the calix[4]arene molecules with carbon nanotubes with electrostatic bond in order to increase the conductance of calix[4]arene molecule (5,11,17,23-tetra-ter-butyl-25,27-dehydrazinamidcarbonilmetoxy-26,28-dehydroxy-kalix[4]aren). Using photolithography technique, we fabricated interdigitated gold electrodes with 3 micrometers separation to investigate the electrical properties of carbon nanotubes modified calix[4]arene molecule where we used dropcast method to form a thin film of carbon nanotubes modified calix[4]arene molecule on the gold electrodes. Our reproducible experimental results indicated that the chloroform soluble carbon nanotubes modified calix[4]arene films have great potential for humidity sensing applications at room temperature operations.
Źródło:
Acta Physica Polonica A; 2013, 123, 2; 461-463
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł

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