832 research outputs found
Development Of Granular Structure In Cu90co10 Ribbons Through Furnace And Current Annealing
No full textOn-line measurements of resistance and temperature in melt-spun Cu90 Co10 ribbons are made using two different annealing techniques: conventional furnace annealing, and linearly varying current Joule heating. The aim of this paper is to consider the electrical current, flowing through the sample during the annealing, as a possible parameter to control thermal treatment parameters and thus the microstructure of these systems. Although an exact way to obtain the temperature from the annealing current remains a difficult task, the on-line changes in resistance with current allows one to identify structural changes in the sample during annealing. Also, because the temperature is found to increase continuously with electrical current, it is possible to calibrate the Joule heating system to precisely determine the annealing temperature.365 I30413043Allia, P., Baricco, M., Tiberto, P., Vinai, F., (1993) Rev. Sci. Instr., 64, p. 1053Da Silva, F.C.S., Ferrari, E.F., Knobel, M., (1998) J. Appl. Phys., 84, p. 5366Allia, P., Knobel, M., Tiberto, P., Vinai, F., (1994) J. Magn. Magn. Mater., 133, p. 243Knobel, M., Allia, P., Gomez-Polo, C., Chiriac, H., Vzquez, M., (1995) J. Phys. D: Appl. Phys., 28, p. 2398. , and references thereinYu, R.H., Zhang, X.X., Tejada, J., Zhu, J., Knobel, M., Tiberto, P., Allia, P., Vinai, F., (1995) J. Appl. Phys., 78, p. 5062Allia, P., Baricco, M., Tiberto, P., Vinai, F., (1993) Phys. Rev. B, 47, p. 3118Allia, P., Baricco, M., Knobel, M., Tiberto, P., Vinai, F., (1994) Mater. Sci. Eng. A, 179-180, p. 361Da Silva, F.C.S., Ferrari, E.F., Knobel, M., (1999) J. Appl. Phys., 86, p. 7170Ferrari, E.F., Da Silva, F.C.S., Knobel, M., (1997) Phys. Rev. B, 56, p. 6086Miranda, M.G.M., Rodriguez, G.J.B., Antunes, A.B., Baibich, M.N., Ferrari, E.F., Da Silva, F.C.S., Knobel, M., (1998) J. Magn. Magn. Mater., 185, p. 33
Magneto-transport In Granular Ribbons At High Magnetic Fields
No full textWe have measured the bulk and surface magnetization and magnetoresistance of granular Co10Cu90 ribbons treated with isochronous anneals, from helium to room temperature and at high magnetic fields. The magnetoresistance of these materials can be larger than 15% at room temperature and at high magnetic fields. We show that interparticle interactions are needed for a complete description of the experimental results.1964547Levy, P.M., (1995) J. Magn. Magn. Mater., 140-144, p. 485Altbir, D., Vargas, P., D'Albuqerque E Castro, J., (1996) Phys. Rev. B, 10, p. 6823Ferrari, E.F., Da Silva, F.C.S., Knobel, M., (1997) Phys. Rev. B, 56, p. 6086Miranda, M.G.M., Bracho Rodriguez, G.J., Antunes, A.B., Baibich, M.N., Ferrari, E.F., Da Silva, F.C.S., Knobel, M., (1998) J. Magn. Magn. Mater., 185, p. 331Takanashi, H., Park, J., Sugawara, T., Hono, K., Goto, A., Yasuoka, H., Fujimori, H., (1996) Thin Solid Films, 275, p. 106Allia, P., Knobel, M., Tiberto, P., Vinai, F., (1995) Phys. Rev. B, 52, p. 15398Vargas, P., Altbir, D., D'Albuqerque E Castro, J., Raff, U., (1997) J. Phys. Condens. Matter, 9, p. 9931Knobel, M., Ferrari, E.F., Da Silva, F.C.S., (1998) Proc. IV Latin American Workshop on Magnetism, Magnetic Materials and Their Applications, , São Paulo, Brazil, June World Scientific, Singapore, to be publishedChien, C.L., (1995) Ann. Rev. Mater. Sci., 25, p. 12
Investigating Giant Magnetoresistance In Granular Alloys By Experiments And Simulations
No full textThe relationship between giant magnetoresistance and magnetization in granular materials is reviewed. Experimental data on melt-spun Cu-Co ribbons are explained in terms of a number of structural and magnetic parameters. Although these parameters can be theoretically manipulated, the macroscopic results can be obtained only by means of extensive computer calculations. The simulations are performed using a Monte Carlo-Metropolis algorithm, and they are extremely helpful to understand the role of the different terms in the magnetic and transport properties of these challenging systems. © 1999 Trans Tech Publications,.302-303169178Berkowitz, A.E., Mitchell, J.R., Carey, M.J., Young, A.P., Zhang, S., Spada, F.E., Parker, F.T., Thomas, G., (1992) Phys. Rev. Lett., 68, p. 3745Xiao, J.Q., Jiang, J.S., Chien, C.L., (1992) Phys. Rev. Lett., 68, p. 3749Gittleman, J.I., Goldstein, Y., Bozowski, S., (1972) Phys. Rev. B, 5, p. 3609Gregg, J.F., Thompson, S.M., Dawson, S.J., Ounadjela, K., Staddon, C.R., Hamman, J., Fermon, C., O'Grady, K., (1994) Phys. Rev. B, 49, p. 1064Allia, P., Knobel, M., Tiberto, P., Vinai, F., (1995) Phys. Rev. B, 52, p. 15398Ferrari, E.F., Suva, F.C.S., Knobel, M., Viegas, A.D.C., Morrone, A.R., Schmidt, J.E., to be publishedFerrari, E.F., Suva, F.C.S., Knobel, M., (1997) Phys. Rev. B, 56, p. 6086Badia, F., Batlle, X., Labarta, A., Watson, M.L., Johnston, A.B., Chapman, J.N., (1997) J. Appl. Phys., 82, p. 677Wang, W., Zhu, F., Weng, J., Xiao, J., Lai, W., (1998) Appl. Phys. Lett., 72, p. 118Eastham, D.A., Qiang, Y., Maddock, T.H., Kraft, J., Schille, J.-P., Thompson, G.S., (1997) J.Phys. Cond. Matter, 9, pp. L497Viegas, A.D.C., Geshev, J., Dorneies, L.S., Schmidt, J.E., Knobel, M., (1997) J. Appl. Phys., 82, p. 3047Vargas, P., Altbir, D., D'Albuqerque E Castro, J., Raff, U., (1997) J Phys.-Condens. Matter, 9, p. 9931El-Hilo, M., O'Grady, K., Chantrell, R.W., (1994) J. Appl. Phys., 76, p. 6811Hickey, B.J., Howson, M.A., Musa, S.O., Wiser, N., (1995) Phys. Rev. B, 51, p. 667Wiser, N., (1996) J. Magn. Magn. Mater., 159, p. 19Dimitrov, D.A., Wysin, G.M., (1996) Phys. Rev. B, 54, p. 9237Allia, P., Tiberto, P., Vinai, F., (1997) Philos. Mag. B, 76, p. 447Allia, P., Tiberto, P., Vinai, F., (1997) J. Appl. Phys., 81, p. 4599Vargas, P., Altbir, D., (1997) J. Magn. Magn. Mater, 167, p. 161Von Helmolt, R., Wecker, J., Samwer, K., (1994) Phys. Stat. Sol., 182, pp. K25Yu, R.H., Zhang, X.X., Tejada, J., Zhu, J., Knobel, M., Tiberto, P., Allia, P., Vinai, F., (1995) J. Appl. Phys., 78, p. 5062Berkowitz, A.E., Mitchell, J.R., Carey, M.J., Young, A.P., Rao, D., Starr, A., Zhang, S., Thomas, G., (1993) J. Appl. Phys., 73, p. 5320Busch, R., Gärtner, F., Borchers, C., Haasen, P., Bormann, R., (1996) Acta Mater., 44, p. 2567Blythe, H.J., Jones, G.A., Fedosyuk, V.M., (1996) J. Mater. Science, 31, p. 6431Miranda, M.G.M., Bracho Rodriguez, G.J., Antunes, A.B., Baibich, M.N., Ferrari, E.F., Da Suva, F.C.S., Knobel, M., J. Magn. Magn. Mater, , in pressZhang, S., Levy, P.M., (1993) J. Appl. Phys., 73, p. 5315Marsaglia, G., Zaman, A., (1991) Annals of Appl. Probability, 1 (3)Vedyayev, A., Mevel, B., Ryzhanova, N., Tshiev, M., Dieny, B., Chamberod, A., Brouers, F., (1996) J. Magn. Magn. Mater., 164, p. 91Rubinstein, M., (1994) Phys. Rev. B, 50, p. 3830Gu, R.Y., Sheng, L., Xing, D.Y., Wang, Z.D., Dong, J.M., (1996) Phys. Rev. B, 53, p. 11685Gonzalez, J.M., Ramirez, R., Smimov Rueda, R., Gonzalez, J., (1995) Phys. Rev. B, 52, p. 1603
Alpejska przestrzeń grozy w opowiadaniu E.F. Bensona
No full textThe Alpine horror space in E.F. Benson’s story The Horror-Horn The article presents the image of the Alps in the work of the British writer Edward Frederick Benson. The author focuses in her reflections on Benson’s story The Horror-Horn, still unpublished in Poland, one of the first works which feature an icon of popular culture: the abominable snowman. In his story Benson depicts the Alps in accordance with a convention typical of horror literature, though the descriptions of mountain peaks have their roots also in the folk tradition or in mythological images. An analysis illustrating Benson’s “Alpine horror” mechanism is complemented by a fragment of The Horror-Horn translated into Polish.The Alpine horror space in E.F. Benson’s story The Horror-Horn The article presents the image of the Alps in the work of the British writer Edward Frederick Benson. The author focuses in her reflections on Benson’s story The Horror-Horn, still unpublished in Poland, one of the first works which feature an icon of popular culture: the abominable snowman. In his story Benson depicts the Alps in accordance with a convention typical of horror literature, though the descriptions of mountain peaks have their roots also in the folk tradition or in mythological images. An analysis illustrating Benson’s “Alpine horror” mechanism is complemented by a fragment of The Horror-Horn translated into Polish
Book Review: Khlynina T.P., Krinko E.F. History, Politics and Nation Building in the North Caucasus: Monograph. – Rostov-on-Don, Izd-vo YuNTs RAN, 2014. – 434 p.
No full textThe author of the review reveals the research approach of the monograph’s authors – T.P. Khlynina and E.F. Krinko to the analysis of the interconnection of historical memory, politics and nation building in the North Caucasus. The author also reveals the argumentation of authors’ evaluations of Soviet nation building in the region, interactions of state power with ethnopolitical movements, methods of historical memory institutionalization in the North Caucasus
Opening van vier nieuwe laboratoria van de Afdeling der Werktuigbouwkunde van de Technische Hogeschool Delft
No full textSamenvatting van de toespraak door Prof.ir, R. van Hasselt bij de officiele opening van vier nieuwe laboratoriavan de Afdeling der Werktuigbouwkunde Boon, E.F. en Boot, J.: het Laboratorium voor Chemische Werktuigen Vahl, L.: het Laboratorium voor Koudetechniek Van Eldik Thieme, H.C.A.: het Laboratorium voor Voertuigtechniek Blok, H.: het Laboratorium voor WerktuigonderdelenWerktuigbouwkundeMechanical, Maritime and Materials Engineerin
3D Laser Scan Data: La Charce Sedimentary Outcrop, France
No full textThis .ptx file is a 3D point cloud (XYZiRGB) of a sedimentary rock outcrop near La Charce, France. It was used for the data analysis in Matlab completing the Master thesis: "Characterizing Sedimentary Outcrops with Laser Scanning: Applied to Cretaceous deep marine limestone-marl sequences in the Vocontian Basin, France". It can be opened in the open source software, CloudCompare
Electrical impedance tomography in children with community acquired pneumonia : preliminary data
No full textBackground Electrical impedance tomography (EIT) is a noninvasive pulmonary function test that provides spatial and temporal information of changes in regional lung ventilation. We aimed to assess the feasibility of EIT as a supplementary tool in the evaluation of community acquired pneumonia in children. Furthermore, we performed a prospective evaluation of regional lung ventilation changes during a six-month follow-up period. Methods We enrolled otherwise healthy children aged 2–15 years with radiological diagnosis of community acquired pneumonia on admission at pediatric emergency department. Chest EIT was performed at enrollment, at three and six-months from baseline. Results Nineteen children were enrolled. A significant agreement between EIT and chest radiography in identifying the affected lung (left or right) was observed (Cohen K statistic = 0.73, 95% CI 0.5–0.98). Ventilation improvement was documented at three-month follow-up, but a full recovery only at six months. Conclusion EIT reliably provides additional information on lung ventilation disorders due to CAP in children. It further allows bedside, real time and radiation free monitoring of lung functional recovery. Future studies are needed to expand the generalizability of this method and evaluate effectiveness on clinical practice
Capacitance-transient-spectroscopy Model For Defects With Two Charge States
No full textWe formulate the set of coupled differential equations that govern the charge capture and emission process of deep levels that present two possible charge states. This solution is obtained considering the steady-state conditions imposed by DLTS (deep level transient spectroscopy) technique procedure. We distinguish three types of defects according to the predominance of one of the three different emission processes. Using our model, we reproduce DLTS spectra of doubly charged defects observed in different semiconductors such as p-type CdTe, electron and proton irradiated n-type GaAs, and sulfur-doped GaSb. Thermal barriers for carrier capture are easily introduced in our equations permitting one to reproduce experimental data even in the case of large lattice relaxation. We show that without a further analysis within the framework of our model, some DLTS spectra of defects with two states of charge might be misinterpreted as is the case for the DX center in GaSb:S.551595909597Lang, D.V., (1974) J. Appl. Phys., 45, p. 3023Harris, R.D., Newton, J.L., Watkins, G.D., (1982) Phys. Rev. Lett., 48, p. 1271Watkins, G.D., (1984) Festkörperprobleme: Advances in Solid State Physics, 24, p. 163. , edited by P. Grosse Vieweg-Verlag, BraunschweigLevinson, M., Benton, J.L., Kimerling, L.C., (1983) Phys. Rev. B, 27, p. 6216Levinson, M., Stavola, M., Benton, J.L., Kimerling, L.C., (1983) Phys. Rev. B, 28, p. 5848Levinson, M., Stavola, M., Besoni, P., Bonner, W.A., (1984) Phys. Rev. B, 30, p. 5817Zoth, G., Schröter, W., (1988) Philos. Mag., 58, p. 623Barbot, J.F., Girault, P., Blanchard, C., Hümmelgen, I.A., (1995) J. Mater. Sci., 30, p. 3471Koehler, M., Ferrari, E.F., Barbot, J.F., Hümmelgen, I.A., (1996) Phys. Rev. B, 53, p. 7805Semaltianos, N.G., Karczewsky, G., Hu, B., Wojtowicz, T., Furdyna, J.K., (1995) Phys. Rev. B, 51, p. 17499Svensson, B.G., Willander, M., (1987) J. Appl. Phys., 62, p. 2758Lalita, J., Jagadish, C., Svensson, B.G., (1995) Nucl. Instrum. Methods Phys. Res. Sect. B, 106, p. 234Pons, D., Bourgoin, J.C., (1985) J. Phys. C, 18, p. 3839Goodman, S.A., Auret, F.D., Meyer, W.E., (1990) Nucl. Instrum. Methods Phys. Res. Sect. B, 90, p. 349Ziebro, B., Hemsky, J.H., Look, D.C., (1992) J. Appl. Phys., 72, p. 78Lai, S.T., Alexiev, D., Nener, B.D., (1995) J. Appl. Phys., 78, p. 3686Dobaczewski, L., Kaczor, P., Karczewsky, G., Poole, I., (1991) Acta Phys. Pol. A, 79, p. 133Dutta, P.S., Koteswara Rao, K.S.R., Sangunni, K.S., Bhat, H.L., Kumar, V., (1994) Appl. Phys. Lett., 65, p. 1412Hubík, P., Smíd, V., Kristofik, J., Stepanek, B., Sestakova, V., (1993) Solid State Commun., 86, p. 19Poole, I., Lee, M.E., Cleverley, I.R., Peaker, A.R., Singer, K.E., (1990) Appl. Phys. Lett., 57, p. 1645Dobaczewski, L., Kaczor, P., (1991) Semicond. Sci. Technol., 6, pp. B51Lang, D.V., Logan, R.A., Jaros, M., (1979) Phys. Rev. B, 19, p. 1015Dobaczewsky, L., Kaczor, P., (1991) Semicond. Sci. Technol., 6, pp. B51(1992) Mod. Phys. Lett. B, 6, p. 15Li, M.F., Luo, Y.Y., Yu, P.Y., Weber, E.R., Fujioka, H., Du, A.Y., Chua, S.J., Lim, Y.T., (1994) Phys. Rev. B, 50, p. 7996Khachaturyan, K., Kaminska, M., Weber, E.R., Becla, P., Street, R.A., (1989) Phys. Rev. B, 40, p. 6304Schröter, W., Kronewitz, J., Gnauert, U., Riedel, F., Seibt, M., (1995) Phys. Rev. B, 52, p. 13726Pons, D., (1984) J. Appl. Phys., 55, p. 3644Barbot, J.F., Blanchard, C., Ntsoenzok, E., Vernois, J., (1996) Mat. Sci. Eng. B, 36, p. 81Tachikawa, M., Mizuta, M., Kukimoto, H., Minomura, S., (1985) Jpn. J. Appl. Phys., 24, pp. L821Maude, D.K., Portal, J.C., Mowski, I.D., Foster, T., Eaves, L., Nathan, M., Heilbum, M., Beal, R.B., (1988) Phys. Rev. Lett., 59, p. 815Theis, T.N., Mooney, P.M., Wright, S.L., (1988) Phys. Rev. Lett., 60, p. 361Chadi, D.J., Chang, K.J., (1989) Phys. Rev. B, 39, p. 10063Soares, D.A.W., Ribeiro, G.M., Sampaio, J.F., Chaves, A.S., Oliveira, A.G., (1994) Brazilian J. Phys., 24, p. 370Baj, M., Dmowski, L.H., Slupiński, T., (1993) Phys. Rev. Lett., 71, p. 352
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