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17 results on '"Nordh, L."'

6. The OSIRIS instrument on the Odin spacecraft

Author

Llewellyn, E J, Lloyd, N D, Degenstein, D A, Gattinger, R L, Petelina, S V, Bourassa, A E, Wiensz, J T, Ivanov, E V, McDade, I C, Solheim, B H, McConnell, J C, Haley, C S, von Savigny, C, Sioris, C E, McLinden, C A, Griffioen, E, Kaminski, J, Evans, W FJ, Puckrin, E, Strong, K, Wehrle, V, Hum, R H, Kendall, D JW, Matsushita, J, Murtagh, D P, Brohede, S, Stegman, J, Witt, G, Barnes, G, Payne, W F, Piché, L, Smith, K, Warshaw, G, Deslauniers, D-L, Marchand, P, Richardson, E H, King, R A, Wevers, I, McCreath, W, Kyrölä, E, Oikarinen, L, Leppelmeier, G W, Auvinen, H, Mégie, G, Hauchecorne, A, Lefèvre, F, de La Nöe, J, Ricaud, P, Frisk, U, Sjoberg, F, von Schéele, F, and Nordh, L

Published
2004

8. The effect of the martensitic packet size on the machinability

Author

Hoseing, H., García Caballero, Francisca, Högman, B., San-Martín, D., Capdevila, Carlos, Nordh, L. G., and Andrén, H. O.

Subjects
Machinability, end milling, prior austenite grain size, prehardened mold steel, martensite packet size
Abstract

The effect of martensitic packet size on the machinability of a prehardened mold steel at a hardness of ~ 40 HRC (typical hardness for prehardened mold steels) was studied in terms of cutting force and tool life. The machinability tests were performed in end milling using coated cemented carbide tools at three different cutting speeds. The results showed that an increase in the martensite packet size led to higher cutting force and shorter tool life. The increase in cutting force was related to the increase of work hardening. The work material with a coarser martensite packet size showed a higher amount of work hardening that can explain the higher cutting force. The longer tool life in the workpieces with finer structure was correlated to smaller amplitude of the variation in cutting force, financial support of Uddeholms AB, Vinnova within Vinnpro program and CAPE research center. Rickard Sundström (Sandvik Tooling) is thanked for providing the cutting tools and helpful recommendations regarding machining tests. H. Hoseiny thanks Centro Nacional de Investigaciones Metalúrgicas (CENIM-CSIC)

Published
2012

9. Detection of OH+ and H2O+ towards Orion KL

Author

Gupta, H., Rimmer, P., Pearson, J. C., Yu, S., Herbst, E., Harada, N., Bergin, E. A., Neufeld, D. A., Melnick, G. J., Bachiller, R., Baechtold, W., Bell, T. A., Blake, G. A., Caux, E., Ceccarelli, C., Cernicharo, J., Chattopadhyay, G., Comito, C., Cabrit, S., Crockett, N. R., Daniel, F., Falgarone, E., Diez-Gonzalez, M. C., Dubernet, M.-L., Erickson, N., Emprechtinger, M., Encrenaz, P., Gerin, M., Gill, J. J., Giesen, T. F., Goicoechea, J. R., Goldsmith, P. F., Joblin, C., Johnstone, D., Langer, W. D., Larsson, B., Latter, W. B., Lin, R. H., Lis, D. C., Liseau, R., Lord, S. D., Maiwald, F. W., Maret, S., Martin, P. G., Martin-Pintado, J., Menten, K. M., Morris, P., Müller, H. S. P., Murphy, J. A., Nordh, L. H., Olberg, M., Ossenkopf, V., Pagani, L., Pérault, M., Phillips, T. G., Plume, R., Qin, S.-L., Salez, M., Samoska, L. A., Schilke, P., Schlecht, E., Schlemmer, S., Szczerba, R., Stutzki, J., Trappe, N., Van Der Tak, F. F. S., Vastel, C., Wang, S., Yorke, H. W., Zmuidzinas, J., Boogert, A., Güsten, R., Hartogh, P., Honingh, N., Karpov, A., Kooi, J., Krieg, J.-M., Schieder, R., Zaal, P., Faure, Alexandre, Laboratoire d'Astrophysique de Grenoble (LAOG), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2010

10. The northern hemisphere statospheric vortex during the 2002/03 winter : subsidence, chlorine activation and ozone loss observed by the Odin sub-millimetre radiometer

Author

Urban, Jakub, Lautie, N., Le Flochmoën, E., Murtagh, D., Ricaud, P., de La Noë, J., Dupuy, E., Drouin, A., El Amraoui, L., Eriksson, P., Frisk, U., Jimenez, Chloé, Kyrölä, E., Llewellyn, E., Mégie, G., Nordh, L., Olberg, M., Laboratoire d'aérologie (LAERO), Centre National de la Recherche Scientifique (CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), and Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph]
Published
2004

11. First detection of NH3 (1,0 - 0,0) from a low mass cloud core: On the low ammonia abundance of the rho Oph A core

Author

Liseau, R., Larsson, B., Brandeker, A., Bergman, P., Bernath, P., Black, J. H., Booth, R., Buat, V., Curry, C., Encrenaz, P., Falgarone, E., Feldman, P., Fich, M., Floren, H., Frisk, U., Gerin, M., Gregersen, E., Harju, J., Hasegawa, T., Hjalmarson, A., Johansson, L., Kwok, S., Lecacheux, A., Liljestrom, T., Mattila, K., Mitchell, G., Nordh, L., Olberg, M., Olofsson, G., Pagani, L., Plume, R., Ristorcelli, I., Sandqvist, Aa., Scheele, F. v., Serra, G., Tothill, N., Volk, K., and Wilson, C.

Subjects
Astrophysics (astro-ph), FOS: Physical sciences, Astrophysics
Abstract

Odin has successfully observed the molecular core rho Oph A in the 572.5 GHz rotational ground state line of ammonia, NH3 (J,K = 1,0 - 0,0). The interpretation of this result makes use of complementary molecular line data obtained from the ground (C17O and CH3OH) as part of the Odin preparatory work. Comparison of these observations with theoretical model calculations of line excitation and transfer yields a quite ordinary abundance of methanol, X(CH3OH) = 3e-9. Unless NH3 is not entirely segregated from C17O and CH3OH, ammonia is found to be significantly underabundant with respect to typical dense core values, viz. X(NH3) = 8e-10., 4 pages, 2 figures, 2 tables, to appear in Astron. Astrophys. Letters

Published
2003

12. First detection of NH3 (l0 -> O0) from a low mass cloud core. On the low ammonia abundance of the rho Oph A core

Author

Liseau, R., Larsson, B., Brandeker, A., Bergman, P., Bernath, P., Black, J. H., Booth, R., Buat, V., Curry, C., Encrenaz, P., Falgarone, E., Feldman, P., Fich, M., Florén, H., Frisk, U., Gerin, M., Gregersen, E., Harju, J., Hasegawa, T., Hjalmarson, Å., Johansson, L., Kwok, S., Lecacheux, A., Liljeström, T., Mattila, K., Mitchell, G. (Gordon S. ), Nordh, L., Olberg, M., Olofsson, G., Pagani, L., Plume, R., Ristorcelli, I., Sandqvist, Aa., Schéele, F., Serra, G., Tothill, G., Volk, K., and Wilson, C.

Published
2003

17. Computer-simulated phacoemulsification.

Author

Laurell CG, Söderberg P, Nordh L, Skarman E, and Nordqvist P

Subjects
Education, Medical, Humans, Internship and Residency, Phacoemulsification education, User-Computer Interface, Computer Simulation, Computer-Assisted Instruction, Models, Anatomic, Phacoemulsification methods
Abstract

Objective: To develop a simulator for training in phacoemulsification to be used as a learning device for both beginners and experienced surgeons to shorten the learning curve., Design: Experimental study., Methods: The system consists of a personal computer, a 3-dimensional visual interface, a phacoemulsification handpiece, and a nucleus manipulator and foot pedals for control of the phacoemulsification procedure and microscope adjustments. The simulation is based on generalized simulation software that can be also used for the development of other medical simulations., Main Outcome Measures: Qualitative statements given in a questionnaire. Medical students and ophthalmic surgeons with varying experience of phacoemulsification were tested., Results: A simulator for training in phacoemulsification has been developed. The surgical procedures can be practiced any number of times, and there is no risk to patients. The efforts of the surgeon can be evaluated objectively., Conclusions: Studies have shown that the number of complications for an ophthalmic surgeon learning phacoemulsification decreases exponentially, reaching close to the asymptote only after several hundred procedures. Simulator training might shorten the learning period, reduce expensive supervision by an experienced surgeon, and maintain and improve the skills of experienced surgeons.

Published
2004
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