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    Wyświetlanie 1-7 z 7
    Tytuł:
    Current Annealings and Magnetoimpedance in Co-Fe Amorphous Ribbons
    Autorzy:
    González, J.
    Domínguez, L.
    Blanco, J. M.
    Aragoneses, P.
    Valenzuela, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1956111.pdf
    Data publikacji:
    1997-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.60.Nt
    75.50.Kj
    Opis:
    Amorphous ribbons of composition (Co$\text{}_{0.95}$Fe$\text{}_{0.05}$)$\text{}_{100-x}$Si$\text{}_{0.4x}$ B$\text{}_{0.6x}$, with x=25 and 30 were prepared by the melt-spinning technique. Current annealings at 600 mA were performed for annealing times between 15 s and 60 min. The magnetoimpedance response was investigated by submitting the ribbons to ac currents at frequencies in the 10-200 kHz range, with amplitudes between 1 and 15 mA (rms), and measuring their voltage response. The observed results show that a transverse anisotropy is induced by the thermal treatments, which can be evaluated by means of the magnetoimpedance effect. Due to its lower Curie temperature, the x=30 ribbons exhibited lower sensibility to the current annealings.
    Źródło:
    Acta Physica Polonica A; 1997, 91, 2; 451-454
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Combined Atom Probe Tomography and TEM Investigations of CoCrFeNi, CoCrFeNi-Pd_x (x=0.5, 1.0, 1.5) and CoCrFeNi-Sn
    Autorzy:
    Cornide, J.
    Calvo-Dahlborg, M.
    Chambreland, S.
    Asensio Dominguez, L.
    Leong, Z.
    Dahlborg, U.
    Cunliffe, A.
    Goodall, R.
    Todd, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/1402078.pdf
    Data publikacji:
    2015-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.66.Dk
    Opis:
    The structure of a family of high entropy alloys based on the composition CoCrFeNi, to which Pd and Sn have been added, is presented. The results stem from combined investigations by atom probe tomography as well as by scanning and transmission electron microscopy on samples produced by arc melting. Although CoCrFeNi is of fcc structure, the sample is not homogeneous on atomic scale. The addition of Pd as a fifth element retains the fcc lattice with the indication of the coexistence of at least two additional phases. The addition of Sn changes the general structure considerably.
    Źródło:
    Acta Physica Polonica A; 2015, 128, 4; 557-560
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Crystalline Structures of Some High Entropy Alloys Obtained by Neutron and X-Ray Diffraction
    Autorzy:
    Dahlborg, U.
    Cornide, J.
    Calvo-Dahlborg, M.
    Hansen, T.
    Leong, Z.
    Asensio Dominguez, L.
    Chambreland, S.
    Cunliffe, A.
    Goodall, R.
    Todd, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/1402077.pdf
    Data publikacji:
    2015-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.05.cp
    61.05.fm
    61.66.Dk
    Opis:
    The understanding of the structure and the stability of high entropy alloys is still incomplete and the mechanisms behind the composition-property relationships are unclear. One reason is that few systematic and accurate determinations of their composition-dependent structure on atomic level have been made. In this paper some results on the structure obtained by X-ray and neutron diffraction of the CoCrFeNi alloy, to which Pd, Sn and Cu have been added in different amounts, are reported. The investigations make it obvious that none of the alloys is completely homogeneous, as has earlier been suggested, and that they do not form a perfect solid solution.
    Źródło:
    Acta Physica Polonica A; 2015, 128, 4; 552-556
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Influence of Micropauses on Surgeons’ Precision After Short Laparoscopy Procedures
    Autorzy:
    Komorowski, Andrzej L.
    Usero, David Dominguez
    Rodil, Jose Ramon Martin‑Hidalgo
    Topór-Mądry, Roman
    Powiązania:
    https://bibliotekanauki.pl/articles/1395574.pdf
    Data publikacji:
    2015-03-01
    Wydawca:
    Index Copernicus International
    Tematy:
    laparoscopy
    surgical technique
    surgical precision
    Opis:
    It has recently been shown that micropauses during long surgical procedures can be beneficial for surgeons’ precision and fatigue. The aim of the study was to evaluate the impact of micropauses on surgical precision measured by a simple smartphone application. Material and methods. Two surgeons performed 40 simple laparoscopic procedures (appendectomy and cholecystectomy) with or without micropauses. After the operation the precision of surgical movements was measured by a simple smartphone application in which the number of successful trials and their mean time were used as a precision surrogate. Results. Mean number of successful trials was significantly higher for appendectomy than for cholecystectomy (5.59 vs 4; p = 0.032). There was a difference between participating surgeons both in terms of number of successful trials (5.80 vs 3.55; p = 0.01) and a mean time of all successful trials (10.03 vs 6.28; p = 0.001). No other statistically significant differences were identified. Conclusion. Micropauses had no influence on surgical precision as evaluated after short laparoscopy procedures. The only differences were surgeon-dependent and intervention-dependent.
    Źródło:
    Polish Journal of Surgery; 2015, 87, 3; 116-120
    0032-373X
    2299-2847
    Pojawia się w:
    Polish Journal of Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Laser irradiation effects on field performance of maize seed genotypes
    Autorzy:
    Hernandez-Aguilar, C.
    Dominguez-Pacheco, A.
    Cruz-Orez, A.
    Ivanov, R.
    Carballo-Carballo, A.
    Zepeda-Bautista, R.
    Galindo Soria, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/25093.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Źródło:
    International Agrophysics; 2009, 23, 4; 327-332
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Physicochemical characterization of flours and rheological and textural changes of masa and tortillas obtained from maize fertilized with nejayote and ovine manure
    Autorzy:
    Valderrama Bravo, M.C.
    Cornejo Villegas, M.A.
    Zambrano Zaragoza, M.L.
    Dominguez Hernandez, M.E.
    Zepeda Bautista, R.
    Oaxaca Luna, J.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2082903.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    ovine manure
    nejayote
    pasting profiles
    rheological
    parameters
    masa
    tortilla
    Opis:
    The agronomic management of maize (Zea mays L.) modifies the structure and composition of maize grain and its products like flour, masa, and tortillas. Results have shown that the protein content in flour obtained from maize grains treated with nejayote applied at 150 m3 ha-1 (10.36 g × 100 g-1) and nejayote applied at 75 m3 ha-1 with ovine manure applied at 25 t ha-1 (10.17 g × 100 g-1) was higher than that determined in flour treated with chemical fertilizer (10.05 g × 100 g-1). The flours obtained from maize fertilized without nejayote showed the highest viscosity values and the lowest values were for chemical fertilizer (2816 mPa s) and 75 m3 ha-1 of nejayote with ovine manure applied at 25 t ha-1 (2498 mPa s). The highest elastic and viscous moduli were obtained for masa with the following fertilization regimes: 75 m3 ha-1 of nejayote with 25 t ha-1 of ovine manure, and 150 m3 ha-1 of nejayote with 25 t ha-1 of ovine manure and the lowest values of these parameters were obtained for 75 m3 ha-1 of nejayote with 50 t ha-1of ovine manure. The cohesiveness of masa was the lowest for maize fertilized with nejayote applied at 75 to 150 m3 ha-1, and 50 t ha-1 of ovine manure. The highest concentration of 150 m3 ha-1 for nejayote and the lowest level for ovine manure applied at 25 t ha-1 had a positive influence on the production of nixtamal and tortilla.
    Źródło:
    International Agrophysics; 2020, 34, 2; 241-252
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Physical and chemical characterization of masa and tortillas from parental lines, crosses, and one hybrid
    Autorzy:
    Valderrama-Bravo, C.
    Dominguez-Pacheco, A.
    Hernandez-Aguilar, C.
    Zepeda-Bautista, R.
    del Real-Lopez, A.
    Pahua-Ramos, M.E.
    Arellano-Vazquez, J.L.
    Moreno-Martinez, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/24739.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Opis:
    In maize plant breeding aimed at producing a hybrid, it is necessary to characterize the parents and hybrids by their agronomic aspects and grain quality so that the processing industry may offer consumers a quality product and also improve its efficiency. This study evaluated the viscoelastic parameters of masa and the chemical and texture properties of tortillas obtained from parent lines (M-54, M55, and CML-242), two single crosses (M54xM55 and M55xM54), and one hybrid (H-70). The morpho- logy of the maize grains and tortillas was analyzed using scanning electron microscopy. The firmness of masa obtained from CML-242 and H-70 maize was higher than that from the other maize genotypes. M-54 tortillas showed the lowest crude fiber content. Otherwise, tortillas obtained from the M55xM54 hard grain had the lowest fat content and extensibility, while H-70 tortillas showed an intermediate breaking point and extensibility. M-54 and M54xM55 tortillas were softer due to their more swollen starch granules. In contrast, rigid tortillas were obtained from CML-242 and H-70. Grain hardness causes different morphology in starch and tortilla of maize genotypes. However, grain hardness did not influence the characteristics of texture in tortillas.
    Źródło:
    International Agrophysics; 2017, 31, 1
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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