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    Wyświetlanie 1-9 z 9
    Tytuł:
    Mechanical and Microstructural Properties of Friction Welded AISI 304 Stainless Steel to AISI 1060 Steel AISI 1060
    Mikrostruktura i właściwości mechaniczne zgrzewanej tarciowo stali nierdzewnej AISI 304 ze stalą AISI 1060
    Autorzy:
    Ates, H.
    Kaya, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/352438.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    welding
    mechanical properties
    microstructure
    spawanie
    właściwości mechaniczne
    mikrostruktura
    Opis:
    Rotary Friction welding is one of the most popular methods of joining similar and dissimilar materials. It is widely used with metals and thermoplastics in a wide variety of aviation, transport and aerospace industrial component designs. This study investigates the influence of friction and upsetting pressures on the hardness, tensile properties and microstructure of the welds. The experimental results showed that as the friction and upsetting pressures increased, the hardness and tensile strength values increased, as well. The tensile fracture of welded joint occurred in the AISI 1060 side. The friction processed joints were evaluated for their integrity and quality aspects by optical and scanning electron microscopy. For the perfect interfacial bonding, sufficient upsetting and friction pressures are necessary to reach the optimal temperature and severe plastic deformation to bring these materials within the attraction range.
    Zgrzewanie tarciowe jest jedną z najbardziej popularnych metod łączenia podobnych i odmiennych materiałów. Jest ono powszechnie stosowane do łączenia metali i tworzyw termoplastycznych w szerokim zakresie wzorów części przemysłowych w lotnictwie, transporcie i przemyśle kosmicznym. Celem badań jest określenie wpływu tarcia i nacisków na twardość, właściwości wytrzymałościowe i mikrostrukturę spoiny. Wyniki doświadczalne wykazały, że ze wzrostem tarcia i nacisków wzrosła twardość i wytrzymałość na rozciąganie. W trakcie prób rozciągania pękanie następowało po stronie stali AISI 1060. Zgrzewane tarciowo spoiny zostały ocenione pod względem ich integralności i jakości za pomocą mikroskopii optycznej i skaningowej mikroskopii elektronowej. Dla uzyskania idealnego złączenia materiałów potrzebne są odpowiednie naciski i tarcie, aby osiągnąć optymalną temperaturę i intensywne odkształcenie plastyczne.
    Źródło:
    Archives of Metallurgy and Materials; 2014, 59, 3; 841-846
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Measurement of L Shell X-Ray Production and Average L Shell Fluorescence Yields for Some Heavy Elements at 123.6 keV
    Autorzy:
    Apaydin, G.
    Aylikçi, V.
    Kaya, N.
    Cengiz, E.
    Tiraşoğlu, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/1812352.pdf
    Data publikacji:
    2008-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    32.30.Rj
    32.50.+d
    32.80.Fb
    Opis:
    The $L_{3l},$ $L_{3α},$ $L_{3β},$ $L_{2β},$ $L_{2γ},$ $L_{2η},$ $L_{1β}$ and $L_{1γ}$ X-ray production cross-sections and L shell average fluorescence yields were measured for the elements from Re to U using excitation energy of 123.6 keV. Measurements were performed using an $\text{}^{57}Co$ annular radioactive source and a Si(Li) detector. The theoretical values of the cross-sections were calculated using theoretically tabulated values of subshell photoionization cross-sections;the Coster-Kronig transition probabilities were based on the Dirac-Hartree-Slater theory and radiative emission rates. Experimental results were compared with the theoretically calculated values of L shell X-ray cross-sections. The present experimental results are in agreement with theoretical values.
    Źródło:
    Acta Physica Polonica A; 2008, 113, 6; 1629-1638
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Identification of structural and spectral features of 2-amino 4-chlorobenzoic acid and 4-amino 2-chlorobenzoic acid: A comparative experimental and DFT study
    Autorzy:
    Kaya Kinaytürk, N.
    Oturak, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/1065713.pdf
    Data publikacji:
    2016-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    31.15.E
    33.20.Lg
    33.20.Ea
    Opis:
    The structure and spectroscopic data of the molecules in the ground state were calculated using density functional theory employing B3LYP/6-311++G(d,p) basis set. The dipol moment, linear polarizability and first hyperpolarizability values were also computed using the same basis set. A study on the electronic properties, such as HOMO-LUMO energies, were performed by time-dependent density functional theory approach. A detailed description of spectroscopic behaviour of compounds was given based on the comparison of experimental data and theoretical computations.
    Źródło:
    Acta Physica Polonica A; 2016, 130, 1; 276-281
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Structure and Vibrational Studies of ±1-(1H-Benzoimidazol-2-YL) Ethanol, Using DFT Method
    Autorzy:
    Oturak, H.
    Kaya Kinaytürk, N.
    Şahın, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1402488.pdf
    Data publikacji:
    2015-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    33.20.Tp
    31.15.A-
    31.15.E-
    Opis:
    In this study, conformational analysis and quantum chemical calculations of ±1-(1H-Benzoimidazol-2-YL) Ethanol were carried out. The geometric structure, infrared intensities, UV-VIS spectrum, HOMO-LUMO energies, $\text{}^1H$ and $\text{}^{13}C$ nuclear magnetic resonance (NMR) chemical shifts were calculated by using the density functional method (DFT/B3LYP) with 6-311++G(d,p) basis set. The vibrational studies were interpreted in terms of potential energy distribution (PED). Finally, calculated values were compared with the experimental ones.
    Źródło:
    Acta Physica Polonica A; 2015, 128, 2B; B-417-B-421
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental and Quantum Chemical Calculations of 2-Amino-4,5,6,7-Tetrahydrobenzo[b]Thiophene-3-Carbonitrile
    Autorzy:
    Oturak, H.
    Kaya Kinaytürk, N.
    Topuz, M.
    Kutlu, N.
    Kaynaker, E.
    Talıp, P.
    Sert, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/1031126.pdf
    Data publikacji:
    2017-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    31.15.E-
    33.20.Ea
    33.20.Tp
    33.20.Fb
    33.20.Lg
    33.20.Bx
    Opis:
    Vibrational frequencies of 2-Amino-4,5,6,7-Tetrahydrobenzo[b]Thiophene-3-Carbonitrile were calculated using density functional (DFT/B3YLP) method with 6-311++G(d,p) basis set by Gaussian 09. The assignments of the vibrational frequencies have been done by potential energy distribution analysis, using VEDA 4 software. The density functional theory and time dependent density functional theory methods have been used to study the electronic properties of 2-Amino-4,5,6,7-Tetrahydrobenzo[b]Thiophene-3-Carbonitrile. Isotropic chemical shifts were calculated using the gauge-invariant atomic orbital method. All computed spectroscopic properties were compared with experimental ones. The simulated spectra of the molecule show excellent agreement with the experimental spectra.
    Źródło:
    Acta Physica Polonica A; 2017, 132, 3; 1192-1199
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Signalling and multiple regulatory mechanisms for NADPH oxidase-mediated deliberate ROS production in plant cells
    Autorzy:
    Kuchitsu, K.
    Kitahata, N.
    Kimura, S.
    Kawarazaki, T.
    Kaya, H.
    Kurusu, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/80951.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    NADPH oxidase
    conference
    regulatory mechanism
    signalling
    reactive oxygen species
    plant cell
    molecular mechanism
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Nanospheres caped Pt(II) and Pt (IV): synthesis and evaluation as antimicrobial and Antifungal Agent
    Autorzy:
    Öğütçü, H.
    Yetim, N. K.
    Özkan, E. H.
    Eren, O.
    Kaya, G.
    Sarı, N.
    Dişli, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/778521.pdf
    Data publikacji:
    2017
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    antimicrobial agent
    antifungal agent
    poly(styrene)
    caped platinium
    Opis:
    Antimicrobial and antifungal polymers are gaining the attention of pharmaceutical makers and industrial design. Nanospheres-Polymers attached Platinum(II) / (IV) complexes have been synthesized to investigate antimicrobial activities. Firstly, nanospheres involving Schiff bases were synthesized from (aminomethyl) polystyrene and four substitute salicylaldehyde (2-hydroxy benzaldehyde, 5-fluoro-2-hydroxy benzaldehyde, 5-kloro-2-hydroxy benzaldehyde, 5-bromo-2-hydroxy benzaldehyde). Secondly, polymers attached Platinum(II) / (IV) complexes have been prepared by means of template method. The IR spectra show that the ligands act in a monovalent bidentate fashion all nanospheres involving Schiff bases. Square-planar and octahedral structures are proposed for Pt(II) and Pt(IV), respectively. All these substances have been examined for antibacterial activity against pathogenic strains, and antifungal activity. In particular, Pt(IV) complexes were more potent bactericides than all of the synthesized substances.
    Źródło:
    Polish Journal of Chemical Technology; 2017, 19, 1; 74-80
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Novel Aryl/Alkyl Azole Derivates as an anti-nociceptive and anti-inflammatory drug candidates
    Autorzy:
    Kaya-Yasar, Yesim
    Barut, Elif N.
    Engin, Seckin
    Dogan, Inci S.
    Sezen, Feride S.
    Powiązania:
    https://bibliotekanauki.pl/articles/895330.pdf
    Data publikacji:
    2020-04-29
    Wydawca:
    Polskie Towarzystwo Farmaceutyczne
    Tematy:
    pain
    inflammation
    aryl/alkyl azole
    COX-LOX
    formalin-induced hind paw edema test
    hot plate test
    Opis:
    Novel aryl/alkyl azole derivative compounds C1 and C2 were screened for in vivo anti-nociceptive and anti-inflammatory activities by using the hot plate test and formalin-induced hind paw edema test, respectively. Ability of these compounds to inhibit cyclooxygenase-1/2 (COX-1/2) and 5/15-lipoxygenase (5/15-LOX) were evaluated in vitro by using a colorimetric method. C1 (30 and 50 mg/kg, i.p.) and C2 (3 and 30 mg/kg, i.p.) increased the latency to withdrawal in the hot plate test, indicating an anti-nociceptive activity. C1(30 and 50 mg/kg) and C2 (3,30 and 50 mg) were able to decrease formalin-induced edema, indicating their anti-inflammatory properties. C1 and C2 exhibited inhibitory effects on the activity of COX(1-2) and 15-LOX. However, neither C1 nor C2 showed an inhibitory effect on 5-LOX. This study demonstrates that C1 and C2 have anti-nociceptive and anti-inflammatory activities, that is partially mediated by inhibition of COX and LOX enzymes. Our results suggest that C1 and C2, novel aryl/alkyl azole compounds, could serve as lead compounds to develop novel therapeutic options for the treatment of pain and inflammation.
    Źródło:
    Acta Poloniae Pharmaceutica - Drug Research; 2020, 77, 2; 289-294
    0001-6837
    2353-5288
    Pojawia się w:
    Acta Poloniae Pharmaceutica - Drug Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Variation Analysis of CMOS Technologies Using Surface-Potential MOSFET Model
    Autorzy:
    Mattausch, H. J.
    Yumisaki, A.
    Sadachika, N.
    Kaya, A.
    Johguchi, K.
    Koide, T.
    Miura-Mattausch, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/308251.pdf
    Data publikacji:
    2009
    Wydawca:
    Instytut Łączności - Państwowy Instytut Badawczy
    Tematy:
    compact model
    fabrication inaccuracy
    field-effect transistor
    macroscopic
    microscopic
    potential at channel surface
    silicon
    within wafer
    Opis:
    An analysis of the measured macroscopic withinwafer variations for threshold voltage (Vth) and on-current (Ion) over several technology generations (180 nm, 100 nm and 65 nm) is reported. It is verified that the dominant microscopic variations of the MOSFET device can be extracted quantitatively from these macroscopic variation data by applying the surface-potential compact model Hiroshima University STARC IGFET model 2 (HiSIM2), which is presently brought into industrial application. Only a small number of microscopic parameters, representing substrate doping (NSUBC), pocket-implantation doping (NSUBP), carrier-mobility degradation due to gate-interface roughness (MUESR1) and channel-length variation during the gate formation (XLD) are found sufficient to quantitatively reproduce the measured macroscopic within-wafer variations of Vth and Ion for all channel length Lg and all technology generations. Quantitative improvements from 180 nm to 65 nm are confirmed to be quite large for MUESR1 (about 70%) and Lmin(XLD) (55%) variations, related to the gate-oxide interface and the gate-stack structuring, respectively. On the other hand, doping-related technology advances, which are reflected by the variation magnitudes of NSUBC (30%) and NSUBP (25%), are found to be considerably smaller. Furthermore, specific combinations of extreme microscopic parameter-variation values are able to represent the boundaries of macroscopic fabrication inaccuracies for Vth and Ion. These combinations are found to remain identical, not only for all Lg of a given technology node, but also for all investigated technologies with minimum Lg of 180 nm, 100 nm and 65 nm.
    Źródło:
    Journal of Telecommunications and Information Technology; 2009, 4; 37-44
    1509-4553
    1899-8852
    Pojawia się w:
    Journal of Telecommunications and Information Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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