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Journal articles on the topic 'Teslas'

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Published: 4 June 2021
Last updated: 1 February 2022

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1

Kemfert, Claudia. "Teslas Paukenschlag — eine Chance für Brandenburg." Wirtschaftsdienst 100, no. 3 (March 2020): 150–51. http://dx.doi.org/10.1007/s10273-020-2588-4.

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2

Mack, Andreas, Robert Wolff, Stefan Scheib, Marcus Rieker, Dirk Weltz, G. Mack, Hans-Jürg Kreiner, et al. "Analyzing 3-tesla magnetic resonance imaging units for implementation in radiosurgery." Journal of Neurosurgery 102, Special_Supplement (January 2005): 158–64. http://dx.doi.org/10.3171/sup.2005.102.s_supplement.0158.

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Object. The limiting factor affecting accuracy during gamma knife surgery is image quality. The new generation of magnetic resonance (MR) imaging units with field strength up to 3 teslas promise superior image quality for anatomical resolution and contrast. There are, however, questions about chemical shifts or susceptibility effects, which are the subject of this paper. Methods. The 3-tesla MR imaging unit (Siemens Trio) was analyzed and compared with a 1-tesla unit (Siemens Magnetom Expert) and to a 1.5-tesla unit (Philips Gyroscan). Evaluation of the magnitude of error was performed within transverse slices in two orientations (axial/coronal) by using a cylindrical phantom with an embedded grid. Deviations were determined for 21 targets in a slab phantom with known geometrical positions within the stereotactic frame. Distortions caused by chemical shift and/or susceptibility effects were analyzed in a head phantom. Inhouse software was used for data analyses. The mean deviation was less than 0.3 mm in axial and less than 0.4 mm in coronal orientations. For the known targets the maximum deviation was 1.16 mm. By optimizing these parameters in the protocol these inaccuracies could be reduced to less than 1.1 mm. Due to inhomogeneities a shift in the z direction of up to 1.5 mm was observed for a dataset, which was shown to be compressed by 1.2 mm. Conclusions. The 3-tesla imaging unit showed superior anatomical contrast and resolution in comparison with the established 1-tesla and 1.5-tesla units; however, due to the high field strength the field within the head coil is very sensitive to inhomogeneities and therefore 3-tesla imaging data will have be handled with care.
3

Mack, Andreas, Robert Wolff, Stefan Scheib, Marcus Rieker, Dirk Weltz, G. Mack, Hans-Jürg Kreiner, et al. "Analyzing 3-tesla magnetic resonance imaging units for implementation in radiosurgery." Journal of Neurosurgery 102 (January 2005): 158–64. http://dx.doi.org/10.3171/jns.2005.102.s_supplement.0158.

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Object.The limiting factor affecting accuracy during gamma knife surgery is image quality. The new generation of magnetic resonance (MR) imaging units with field strength up to 3 teslas promise superior image quality for anatomical resolution and contrast. There are, however, questions about chemical shifts or susceptibility effects, which are the subject of this paper.Methods.The 3-tesla MR imaging unit (Siemens Trio) was analyzed and compared with a 1-tesla unit (Siemens Magnetom Expert) and to a 1.5-tesla unit (Philips Gyroscan). Evaluation of the magnitude of error was performed within transverse slices in two orientations (axial/coronal) by using a cylindrical phantom with an embedded grid. Deviations were determined for 21 targets in a slab phantom with known geometrical positions within the stereotactic frame. Distortions caused by chemical shift and/or susceptibility effects were analyzed in a head phantom. Inhouse software was used for data analyses.The mean deviation was less than 0.3 mm in axial and less than 0.4 mm in coronal orientations. For the known targets the maximum deviation was 1.16 mm. By optimizing these parameters in the protocol these inaccuracies could be reduced to less than 1.1 mm. Due to inhomogeneities a shift in the z direction of up to 1.5 mm was observed for a dataset, which was shown to be compressed by 1.2 mm.Conclusions.The 3-tesla imaging unit showed superior anatomical contrast and resolution in comparison with the established 1-tesla and 1.5-tesla units; however, due to the high field strength the field within the head coil is very sensitive to inhomogeneities and therefore 3-tesla imaging data will have be handled with care.
4

Boivin-Le Pottier, G., J. Y. Gauvrit, and B. Carsin-Nicol. "Signal des hématomes intracérébraux à 3 Teslas : évolutivité et particularités." Journal of Neuroradiology 39, no. 1 (March 2012): 42. http://dx.doi.org/10.1016/j.neurad.2012.01.127.

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5

Job, L., F. Bonnet, S. Perotin, S. Piot-Veron, C. Portefaix, and C. Marcus. "Evaluation des stenoses des arteres coronaires en IRM 3 Teslas." Journal de Radiologie 88, no. 10 (October 2007): 1278. http://dx.doi.org/10.1016/s0221-0363(07)80679-2.

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6

Roche, D., C. Michel, P. Daudé, A. Ogier, C. Chagnaud, J. P. Mattei, L. Pini, M. Guye, D. Bendahan, and S. Guis. "IRM 7 Teslas de l’enthèse quadricipitale chez des sujets sains." Revue du Rhumatisme 87 (December 2020): A256—A257. http://dx.doi.org/10.1016/j.rhum.2020.10.461.

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7

García-Baizán, A., A. Tomás-Biosca, P. Bartolomé Leal, P. D. Domínguez, R. García de Eulate Ruiz, S. Tejada, and J. L. Zubieta. "Resonancia magnética intraoperatoria de 3 teslas: Nuestra experiencia en patología tumoral." Radiología 60, no. 2 (March 2018): 136–42. http://dx.doi.org/10.1016/j.rx.2017.12.002.

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8

Deutsch, C., H. B. Nersisyan, and A. Bendib. "Diagnosing dense and magnetized plasmas irradiated by a petawatt laser." Laser and Particle Beams 34, no. 1 (November 30, 2015): 61–71. http://dx.doi.org/10.1017/s0263034615000919.

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AbstractWe survey the present status and potentialities of diagnostics for arbitrary magnetized plasmas of inertial confinement fusion concern. These diagnostics include: Faraday rotation, inverse Faraday effect, Thomson scattering, Stark–Zeeman line broadening as well as proton stopping for any ratio, of the particles plasma frequency to cyclotron frequency. This presentation is timely motivated by recent experiments highlighting laser-produced kilo Teslas and nearly steady magnetic fields in inertial fusion plasmas. Positive synergies due to diagnostics combinations are also addressed.
9

Barba, Ignasi, Ángel Moreno, Irene Martínez-Pérez, Anne Rosemary Tate, Miquel E. Cabañas, Miguel Baquero, Antoni Capdevila, and Carles Arús. "Magnetic resonance spectroscopy of brain hemangiopericytomas: high myoinositol concentrations and discrimination from meningiomas." Journal of Neurosurgery 94, no. 1 (January 2001): 55–60. http://dx.doi.org/10.3171/jns.2001.94.1.0055.

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Object. Hemangiopericytomas are a rare type of brain tumor that are very similar to meningiomas in appearance and symptoms but require different treatment. It is not normally possible to distinguish between them by using magnetic resonance (MR) imaging and computerized tomography studies. However, discrimination may be possible by using in vivo MR spectroscopy (MRS) because the biochemical composition of these two lesions is different. The goal of this study was to describe the use of MRS in discriminating between these similar tumor types. Methods. In vivo MRS spectra were acquired in 27 patients (three with hemangiopericytomas and 24 with meningiomas) by using a single-voxel proton brain examination system at 1.5 teslas with short— (20-msec) and long— (135-msec) echo times. In addition, brain biopsy specimens obtained by open craniotomy were frozen within 5 minutes of resection and stored in liquid nitrogen until they were used. The specimens were powdered, extracted with perchloric acid, redissolved in 2H2O, and high-resolution in vitro MRS was used at 9.4 teslas to record their spectra. Conclusions. In this study the authors show that hemangiopericytomas could be clearly distinguished from meningiomas because they have a larger peak at 3.56 ppm. Measurements of extracts of the tumors and comparison of spectra acquired with MRS at long— (135-msec) and short— (20-msec) echo times established that this was due to the much higher levels of myoinositol in the hemangiopericytomas.
10

Lin, T. F., and J. B. Gilbert. "Studies of helical magnetohydrodynamic seawater flow in fields up to twelve teslas." Journal of Propulsion and Power 11, no. 6 (November 1995): 1349–55. http://dx.doi.org/10.2514/3.23978.

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11

Macura, Slobodan, Prasanna Mishra, Jeffrey Gamez, and Istvan Pirko. "NMR microscopy of tissue in organic and mixed solvents." Journal of the Serbian Chemical Society 78, no. 11 (2013): 1641–54. http://dx.doi.org/10.2298/jsc131108108m.

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We propose to use organic and mixed solvents for nuclear magnetic resonance microscopy of fixed tissue as a means for improving image information content. NMR properties of some standard solvents (methanol, acetone, DMSO) and solvents in use for tissue processing in pathology (xylenes, paraffin, ?Clearify?) have been measured, reviewed, and analyzed. It was found that DMSO and paraffin are very useful solvents that provide images of better quality than those obtained in water (neutralized formalin buffer). This is illustrated on the formalin fixed mouse brain sections imaged at 16.4 teslas (700 MHz).
12

Ran, Sheng, Chris Eckberg, Qing-Ping Ding, Yuji Furukawa, Tristin Metz, Shanta R. Saha, I.-Lin Liu, et al. "Nearly ferromagnetic spin-triplet superconductivity." Science 365, no. 6454 (August 15, 2019): 684–87. http://dx.doi.org/10.1126/science.aav8645.

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Spin-triplet superconductors potentially host topological excitations that are of interest for quantum information processing. We report the discovery of spin-triplet superconductivity in UTe2, featuring a transition temperature of 1.6 kelvin and a very large and anisotropic upper critical field exceeding 40 teslas. This superconducting phase stability suggests that UTe2 is related to ferromagnetic superconductors such as UGe2, URhGe, and UCoGe. However, the lack of magnetic order and the observation of quantum critical scaling place UTe2 at the paramagnetic end of this ferromagnetic superconductor series. A large intrinsic zero-temperature reservoir of ungapped fermions indicates a highly unconventional type of superconducting pairing.
13

Kazazi, Mario, Christophe Berriaud, Clement Hilaire, Francois-Paul Juster, Raphael Pasquet, and Thierry Schild. "Design, Manufacture, and Tests of a 1+3 Teslas MgB$_{2}$ Dry Magnet." IEEE Transactions on Applied Superconductivity 27, no. 4 (June 2017): 1–5. http://dx.doi.org/10.1109/tasc.2017.2653201.

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14

Jankovski, A., G. Vaz, T. Duprez, M. A. Docquier, M. Van Boven, L. Hermoye, G. Cosnard, and C. Raftopoulos. "Utilisation d’une imagerie par résonance magnétique à 3,0 teslas en conditions chirurgicales : résultats préliminaires." Neurochirurgie 52, no. 5 (November 2006): 482–83. http://dx.doi.org/10.1016/s0028-3770(06)71288-7.

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15

Beynat, J., S. Bidot, P. Quercia, F. Ricolfi, T. Pozzo, A. M. Bron, and C. Garcher. "218 Étude des aires corticales impliquées dans les saccades verticales en IRM fonctionnelle 3 teslas." Journal Français d'Ophtalmologie 32 (April 2009): 1S77. http://dx.doi.org/10.1016/s0181-5512(09)73345-5.

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16

Pendharkar, M., B. Zhang, H. Wu, A. Zarassi, P. Zhang, C. P. Dempsey, J. S. Lee, et al. "Parity-preserving and magnetic field–resilient superconductivity in InSb nanowires with Sn shells." Science 372, no. 6541 (April 15, 2021): 508–11. http://dx.doi.org/10.1126/science.aba5211.

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Improving materials used to make qubits is crucial to further progress in quantum information processing. Of particular interest are semiconductor-superconductor heterostructures that are expected to form the basis of topological quantum computing. We grew semiconductor indium antimonide nanowires that were coated with shells of tin of uniform thickness. No interdiffusion was observed at the interface between Sn and InSb. Tunnel junctions were prepared by in situ shadowing. Despite the lack of lattice matching between Sn and InSb, a 15-nanometer-thick shell of tin was found to induce a hard superconducting gap, with superconductivity persisting in magnetic field up to 4 teslas. A small island of Sn-InSb exhibits the two-electron charging effect. These findings suggest a less restrictive approach to fabricating superconducting and topological quantum circuits.
17

Harvey, B. M., B. P. Klein, N. Petridou, and S. O. Dumoulin. "Topographic Representation of Numerosity in the Human Parietal Cortex." Science 341, no. 6150 (September 5, 2013): 1123–26. http://dx.doi.org/10.1126/science.1239052.

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Numerosity, the set size of a group of items, is processed by the association cortex, but certain aspects mirror the properties of primary senses. Sensory cortices contain topographic maps reflecting the structure of sensory organs. Are the cortical representation and processing of numerosity organized topographically, even though no sensory organ has a numerical structure? Using high-field functional magnetic resonance imaging (at a field strength of 7 teslas), we described neural populations tuned to small numerosities in the human parietal cortex. They are organized topographically, forming a numerosity map that is robust to changes in low-level stimulus features. The cortical surface area devoted to specific numerosities decreases with increasing numerosity, and the tuning width increases with preferred numerosity. These organizational properties extend topographic principles to the representation of higher-order abstract features in the association cortex.
18

Ferré, J. C., B. Carsin-Nicol, J. V. Gauvrit, G. Hérigault, and M. Carsin. "Perfusion cerebrale a 3 Teslas par arterial spin labeling : faisabilite a la phase precoce de l’AVC." Journal de Radiologie 88, no. 10 (October 2007): 1280. http://dx.doi.org/10.1016/s0221-0363(07)80688-3.

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19

Cerveró, A., A. López-de-Eguileta, Á. Cano-Abascal, M. J. Sedano-Tous, M. Drake-Pérez, and A. Casado. "Anisocoria como manifestación inicial de esclerosis múltiple. Utilidad de la resonancia magnética nuclear de 3 teslas." Archivos de la Sociedad Española de Oftalmología 95, no. 4 (April 2020): 192–95. http://dx.doi.org/10.1016/j.oftal.2020.01.012.

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20

Rochette, Pierre, Pierre-Etienne Mathé, Lionel Esteban, Harison Rakoto, Jean-Luc Bouchez, Qingsong Liu, and José Torrent. "Non-saturation of the defect moment of goethite and fine-grained hematite up to 57 Teslas." Geophysical Research Letters 32, no. 22 (November 2005): n/a. http://dx.doi.org/10.1029/2005gl024196.

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21

Wilson, Scott. "Nikola Tesla and the Science of ‘a Successful Paranoia’." Language and Psychoanalysis 6, no. 2 (June 17, 2017): 4–25. http://dx.doi.org/10.7565/10.7565/landp.v6i2.1570.

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This essay offers a psychoanalytic reading of Nikola Tesla’s remarkable text My Inventions, a series of articles published in 1919 for the Electrical Experimenter magazine, edited by Hugo Gernsback (Tesla, 2011). The paper argues that the famous ‘elementary phenomena’ described in these articles operate as proto-linguistic elements or enigmatic ‘signifiers’ that form the basis of his subsequent scientific inquiry. These articles demonstrate that unusually for a scientist, Tesla did not give up on the object cause of his knowledge nor on his own position as the subject of his inventions – indeed I argue that his inventions were the means by which Tesla created and realized himself as a subject. I discuss in particular two of Tesla’s inventions: the Rotating Magnetic Field, that is the basis for the AC induction motor, and the Magnifying Transmitter in the context of Tesla’s own accounts of their ‘psychological’ genesis. I will suggest that it was through these electrical inventions in particular that Tesla managed to design a form of subjectivation that enabled him to stabilize his schizophrenic symptoms and disclose the coherence and efficacy of knowledge and delusion. In so doing Tesla’s inventions perhaps point the way towards the delivery of science as ‘a successful paranoia’, in the terms of Jacques Lacan.
22

Kirilyuk, Andrei, Alexey V. Kimel, and Theo Rasing. "Controlling spins with light." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 369, no. 1951 (September 28, 2011): 3631–45. http://dx.doi.org/10.1098/rsta.2011.0168.

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The interaction of sub-picosecond laser pulses with magnetically ordered materials has developed into an extremely exciting research topic in modern magnetism. From the discovery of sub-picosecond demagnetization over a decade ago to the recent demonstration of magnetization reversal by a single 40 fs laser pulse, the manipulation of spins by ultrashort laser pulses has become a fundamentally challenging topic with a potentially high impact for future spintronics, data storage and manipulation, and quantum computation. We have recently demonstrated that one can generate ultrashort and very strong (teslas) magnetic field pulses via the so-called inverse Faraday effect. Such optically induced magnetic field pulses provide unprecedented means for the generation, manipulation and coherent control of spins on very short time scales. The basic ideas behind these so-called opto-magnetic effects will be discussed and illustrated with recent results, demonstrating the various possibilities of this new field of femto-magnetism.
23

Tessier, A., and N. Escot. "TM-WS-8 Imagerie en DTI et interet de la tractographie dans la SEP en IRM 3 Teslas." Journal de Radiologie 89, no. 10 (October 2008): 1566. http://dx.doi.org/10.1016/s0221-0363(08)76852-5.

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24

Vuckovic, Vladan, and Nikola Stojanovic. "Mathematical 3D modelling and real-time simulation of Tesla's wireless controlled vehicle: Boat." Facta universitatis - series: Electronics and Energetics 24, no. 2 (2011): 257–70. http://dx.doi.org/10.2298/fuee1102257v.

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This paper presents the basic principles of the mathematical 3D modeling and simulation of the Tesla's wireless controlled moving vehicle Tesla boat. This is one of the most complex Tesla's inventions. We have constructed detailed 3D model of the invention and added most of the functionality to the model according to the original patent.
25

Chen, Bailiang, Emilie Roeder, Pierre-André Vuissoz, Pierre Gillet, Jacques Felblinger, Marine Beaumont, and Astrid Pinzano. "Respective interest of T2 mapping and diffusion tensor imaging in assessing porcine knee cartilage with MR at 3 Teslas." Bio-Medical Materials and Engineering 23, no. 4 (2013): 263–72. http://dx.doi.org/10.3233/bme-130750.

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26

Ginefri, J. C., L. Darrasse, and P. Crozat. "Antenne de surface supraconductrice pour la microscopie par résonance magnétique nucléaire de la peau in vivo à 1,5 teslas." ITBM-RBM 22, no. 2 (April 2001): 107–15. http://dx.doi.org/10.1016/s1297-9562(01)90036-1.

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27

Fissoune, Rachida, Denis Grenier, Emmanuelle Canet-Soulas, and André Briguet. "Mesure sélective des temps de relaxation T2 des lipides intra et extramyocytaires chez le rat Zucker à 7 teslas." Comptes Rendus Chimie 9, no. 3-4 (March 2006): 530–33. http://dx.doi.org/10.1016/j.crci.2005.06.032.

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28

Braithwaite, D., D. Bourgault, N. Schopohl, R. Tournier, J. M. Barbut, and J. C. Vallier. "The angular dependence of critical current densities in bulk magnetically melt textured YBaCuO in magnetic fields up to 20 teslas." Journal of Low Temperature Physics 92, no. 5-6 (September 1993): 295–305. http://dx.doi.org/10.1007/bf00682293.

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29

Gillmore, Samineh C., and Nathan L. Tenhundfeld. "The Good, The Bad, and The Ugly: Evaluating Tesla’s Human Factors in the Wild West of Self-Driving Cars." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 64, no. 1 (December 2020): 67–71. http://dx.doi.org/10.1177/1071181320641020.

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With self-driving vehicles no longer a pipe-dream of science fiction comes the growing pains of the new technology. Tesla Motors is the industry leader in implementing new self-driving technologies. Tesla has used new technology in many ways to improve the human factors of their cars, but there are also design flaws that represent threats to efficiency and safety. This paper details the good, the bad, and the ugly of Tesla’s designs, not as a way to negatively impact Tesla’s reputation, but to point out the potential human factors issues that relate to the rise of self-driving cars in general. While the future for autonomous cars has never seemed so promising, it is abundantly clear that we are nowhere near a reality in which the human does not need to be considered.
30

Fraga, Vinicius Munhoz, Maria Cristina do Amaral Moreira, and Marcus Vinicius Pereira. "Uma proposta de gamificação do processo avaliativo no ensino de física em um curso de licenciatura." Caderno Brasileiro de Ensino de Física 38, no. 1 (March 25, 2021): 174–92. http://dx.doi.org/10.5007/2175-7941.2021.e71907.

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O presente artigo apresenta uma experiência de combinação entre uma metodologia passiva, caracterizada por aulas expositivas ministradas pelo professor, e uma ativa, baseada na gamificação aplicada ao processo avaliativo de uma disciplina de Física em um curso de Licenciatura em Química. Os alunos foram divididos em quatro equipes e realizaram atividades individuais (frequência, pontualidade, participação nas aulas, etc.), coletivas (seminários em equipe, resolução de listas de exercícios, atividades experimentais) e competitivas (desafios entre equipes), que compunham o processo avaliativo a ser culminado na prova escrita. Essas atividades eram recompensadas com moedas do jogo denominadas teslas, que foram utilizadas no mercado, ambiente da gamificação onde seria possível adquirir itens capazes de alterar a estrutura de valor da prova, possibilitando ao aluno escolher uma estratégia particular e personalizada para resolver sua avaliação de acordo com seu desenvolvimento na disciplina. A coleta de dados foi realizada por meio de questionário aberto visando identificar e analisar os pontos positivos e negativos destacados pelos alunos. Como resultado, foram identificados incremento do engajamento e da motivação dos discentes que demonstraram aumento de interesse nas aulas e no compromisso com a disciplina, além de, como futuros professores, reconhecerem a gamificação como estratégia inovadora, porém igualmente trabalhosa, pois demanda planejamento adequado.
31

Baltic, Vladimir, and Milan Baltic. "Nikola Tesla discovered ‘very special radiation’ or x-radiation." Archive of Oncology 15, no. 3-4 (2007): 100–105. http://dx.doi.org/10.2298/aoo0704100b.

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Nikola Tesla was an ingenious and briliant scintifist which contributed to the science and technology prosperity of the world. Nikola Tesla discovered high frequency oscillator 1891 year, and afterwards, single electrode X-ray tube without target electrode, electron (?particles charged with electricity?), Bremsstrahlung or ?breaking radiation? or ?very special radiation? (X-radiation) in 1892 year, biological hazards of X-rays, and more about 700 inventions, and 112 patents. Tesla's research work in the field of X-rays was stopped in 1895 because burned in his laboratory. When W. C. R?ntgen 1895, recognition X-rays, Tesla restored his work on this field and sent R?ntgen a telegram with congratilations and R?ntgen shows obtained with X-ray tubes which operated with high frequency currents. Tesla discovered many secret of nature.
32

Cooke, Philip. "Gigafactory Logistics in Space and Time: Tesla’s Fourth Gigafactory and Its Rivals." Sustainability 12, no. 5 (March 6, 2020): 2044. http://dx.doi.org/10.3390/su12052044.

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This paper concerns the spatial structure of Tesla’s four ‘gigafactories’ (‘giga’ is gigawatt hour, GWh) which are located in Tesla’s first Gigafacility (1) at Sparks, near Reno, Nevada; the Solar City Gigafactory (2) at Buffalo, New York state; the 2019 Tesla plant at Shanghai, China Gigafactory (3); and the new Tesla gigafactory Europe Gigafactory (4), which is a manufacturing plant to be constructed in Grünheide, near Berlin, Germany. The newest campus is 20 miles southeast of central Berlin on the main railway line to Wrocław, Poland. Three main features of the ‘gigafactory’ phenomenon, apart from their scale, are in the industry organisation of production, which thus far reverses much current conventional wisdom regarding production geography. Thus, Tesla’s automotive facility in Fremont California reconcentrates manufacturing on site as in-house own brand componentry, especially heavy parts, or by requiring hitherto distant global suppliers to locate in proximity to the main manufacturing plant. Second, as an electric vehicle (EV) producer, the contributions of Tesla’s production infrastructure and logistics infrastructure are important in meeting greenhouse gas mitigation and the reduction of global warming. Finally, the deployment of Big Data analytics, artificial intelligence (AI) and ‘predictive management’ are important. This lies in gigafactory logistics contributing to production and distribution efficiency and effectiveness as a primer for all future industry and services in seeking to minimise time-management issues. This too potentially contributes significantly to the reduction of wasteful energy usage.
33

Kim, Changwan, Seong-Il Bin, Bum-Sik Lee, Won-Joon Cho, June-Goo Lee, Gi-Woon Yoon, and Jong-Min Kim. "Évaluation volumétrique de l’extrusion dans les déchirures des racines postérieures du ménisque médial par segmentation semi-automatique des images IRM 3 teslas." Revue de Chirurgie Orthopédique et Traumatologique 106, no. 5 (September 2020): 550. http://dx.doi.org/10.1016/j.rcot.2020.06.003.

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34

Barral, M., P. Soyer, W. Ben Hassen, É. Gayat, M. Aout, M. Chiaradia, A. Rahmouni, and A. Luciani. "IRM de diffusion du pancréas normal : reproductibilité et variations de la mesure du coefficient de diffusion apparent à 1,5 et 3 teslas." Journal de Radiologie Diagnostique et Interventionnelle 94, no. 4 (April 2013): 433–43. http://dx.doi.org/10.1016/j.jradio.2012.09.013.

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35

Crespo Villalba, Francisco José. "Lesiones del cartílago articular de la rodilla mediante resonancia magnética: ventajas del uso de secuencias ponderadas en densidad protónica en 3.0 Teslas." Imagen Diagnóstica 2, no. 2 (July 2011): 53–58. http://dx.doi.org/10.1016/s2171-3669(11)70031-2.

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Karch-Georges, Aurélie, Francis Veillon, Hella Vuong, Dominique Rohmer, Anne Karol, Anne Charpiot, Nicolas Meyer, and Aina Venkatasamy. "MRI of endolymphatic hydrops in patients with vestibular schwannomas: a case-controlled study using non-enhanced T2-weighted images at 3 Teslas." European Archives of Oto-Rhino-Laryngology 276, no. 6 (March 27, 2019): 1591–99. http://dx.doi.org/10.1007/s00405-019-05395-8.

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Jiménez-Pérez, Mario O., Gilberto Gómez-Garza, Matilde Ruiz-García, Cynthia Fernández-Lainez, Isabel Ibarra-González, and Marcela Vela-Amieva. "Resonancia magnética nuclear de encéfalo en pacientes con fenilcetonuria diagnosticada tardíamente." Acta Pediátrica de México 36, no. 1 (January 2, 2015): 9. http://dx.doi.org/10.18233/apm36no1pp9-17.

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Antecedentes: la fenilcetonuria clásica es una encefalopatía genéticacaracterizada por una inhabilidad de los individuos para metabolizar lafenilalanina, por lo que su concentración plasmática se eleva a nivelestóxicos. Clínicamente se manifiesta como irritabilidad, alteración delsueño, indiferencia al medio, crisis convulsivas, retraso del neurodesarrollo,conducta autista, agresividad y discapacidad intelectual.Objetivo: describir los hallazgos y cuantificar el coeficiente de difusiónaparente en los estudios de imagen de resonancia magnética de cráneo,de pacientes con fenilcetonuria clásica diagnosticada tardíamente enel Instituto Nacional de Pediatría (México).Materiales y métodos: análisis retrospectivo de imágenes cerebralesobtenidas por resonancia magnética en pacientes con fenilcetonuriaclásica. Se utilizó un magneto Signa Excite de 1.5 teslas con antenacerebral de ocho canales de arreglo en fase. Se midió el coeficiente dedifusión aparente en la estación de trabajo Advantage Workstation 4.2p.Resultados: en los pacientes se observaron alteraciones en las sustanciasblanca, gris, o ambas. En la sustancia blanca las lesiones hiperintensasen el área peritrigonal fueron las más frecuentes; se encontraron alteracionesbilaterales en la sustancia blanca frontal, temporal, occipital,subcortical y periventricular. Se observó disminución del coeficientede difusión aparente en la sustancia blanca peritrigonal, occipital,cuerpo calloso, ganglios basales y cerebelo. Un paciente tenía dosquistes aracnoideos.Conclusión: todos los pacientes estudiados tuvieron las anormalidadescaracterísticas de la enfermedad en las imágenes de resonanciamagnética. Los mecanismos causantes de las lesiones cerebrales enla fenilcetonuria, su distribución espacial y su evolución son pococonocidos y requieren de investigaciones posteriores.
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Movsesyan, E. K., and A. V. Butov. "Corporate business strategies according to M. Porter on the example of Tesla." Normirovanie i oplata truda v promyshlennosti (Rationing and remuneration of labor in industry), no. 5 (May 14, 2021): 62–66. http://dx.doi.org/10.33920/pro-3-2105-07.

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The article aims to disclose information about Tesla’s corporate strategies through theoretical and practical research of the topic. The theoretical part presents a full-fledged base of information on corporate strategies of M. Porter. In the practical part, the approach to corporate strategies of Tesla company and its change during the life of the company is considered.
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Kosowatz, John, and Thomas Romer. "Electric Enabler." Mechanical Engineering 139, no. 12 (December 1, 2017): 39. http://dx.doi.org/10.1115/1.2017-dec-6.

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This article explains how Tesla batteries are making electric vehicles (EVs) affordable for customers. Tesla’s battery revolution began when CEO Elon Musk declared that it would sell a mass-market EV for just $35,000. To produce battery packs cheaply enough to reach that price point, Tesla reengineered not only the production process, but also the factory in which the batteries are made. The Reno, Nev., Gigafactory is not yet operating at full capacity, but it is expected to produce 35 GW per year of lithium-ion batteries, about double the present-day global production. Tesla partnered with Panasonic to revamp the production process, and ended up redesigning the chemistry of the battery itself. The standard “18-650” cell format used thousands of less-expensive commodity cells, similar to lithium-ion batteries used in laptop computers. Tesla replaced individual safety systems built into each cell with an inexpensive fireproof system for the entire battery pack. Now, they have begun producing the new “2170” cell, which delivers higher density through an automated system developed with Panasonic to further reduce costs.
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Lang, John W., Beat Reber, and Huda Aldori. "How Tesla created advantages in the ev automotive paradigm, through an integrated business model of value capture and value creation." Business & Management Studies: An International Journal 9, no. 1 (March 25, 2021): 385–404. http://dx.doi.org/10.15295/bmij.v9i1.1790.

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There has been no research conducted that uses a holistic conceptual framework that simultaneously relates the ecosystem, platform technologies, innovations, and modularity to the firms business model. These elements are central to Tesla’s shifting of the automotive paradigm from internal combustion engine transportation to electric vehicle (EV) energy powertrains. The purpose of this paper is to explore how the ecosystem, business model, modularity and innovations of Tesla, as an illustrative case, have contributed to a new vehicular platform and business model EV paradigm. The paper draws on the strategic and operations management literature and examines the relationship between the ecosystem platform's attributes, modular innovations, and a new business model created by Tesla. Battery technology has been a focal point of the Tesla platform, and this is predicted to be an essential part of the battleground for the future of the electric vehicle automotive industry. Our analysis shows the attributes of the Tesla business model's configuration, which have been the drivers of its disruptive approach to the existing legacy automotive markets, have been instrumental in creating and capturing value for its continual platform development.
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Spence, Sean A., Catherine J. Kaylor-Hughes, Martin L. Brook, Sudheer T. Lankappa, and Iain D. Wilkinson. "¿Síndrome de Munchausen por poderes o “error de la justicia”? Aplicación preliminar de la neuroimagen funcional para diferenciar entre culpabilidad e inocencia." European psychiatry (Ed. Española) 15, no. 7 (October 2008): 347–53. http://dx.doi.org/10.1017/s1134066500009152.

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ResumenEl “síndrome de Munchausen por poderes” se refiere, en general, a mujeres acusadas de haber inventado o producido enfermedades en niños bajo su cuidado, destinadas a atraer la atención sobre sí misma. Cuando hay pruebas concluyentes, hay dudas sobre la etiología de la enfermedad, pero cuando no hay pruebas, el diagnóstico depende de la negación de la intencionalidad (conducta también compatible con la inocencia). ¿Cómo podrían los investigadores conseguir pruebas objetivas sobre culpabilidad o inocencia? En este artículo analizamos el caso de una mujer condenada por envenenar a su hija. Cumplió la condena en la cárcel, pero sigue reclamando su inocencia. Usando un protocolo modificado de RMf (publicado ya en 2001) realizamos la prueba de neuroimagen mientras ella confirmaba su versión de los acontecimientos y mientras aceptaba la de sus acusadores. Sugerimos la hipótesis de que los tiempos de respuesta serían más largos y se asociaran con mayor activación de la corteza cingular anterior y prefrontal ventrolateral cuando hacía declaraciones falsas (es decir, cuando “mentía”). La mujer fue sometida 4 veces a RM de 3 teslas. Los resultados revelaron tiempos de respuesta considerablemente más largos y un activación relativamente mayor de la corteza cingular anterior y prefrontal ventrolateral cuando aceptaba la versión de los acontecimientos de sus acusadores. Es decir que aunque no hemos “probado” que esta mujer es inocente, demostramos que sus parámetros conductuales y funcionales anatómicos se comportan como si lo fuera.
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Roulin, Marlyse, Alain Junod, Eric Walker, and Andreas Erb. "High resolution specific heat experiments on the melting line of the vortex glass in YBa2Cu3Ox: Observation of second-order transitions up to 14 Teslas." Physica C: Superconductivity 282-287 (August 1997): 1401–2. http://dx.doi.org/10.1016/s0921-4534(97)00796-x.

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Kropachev, S. A. "Direct or alternating?" Safety and Reliability of Power Industry 14, no. 2 (July 28, 2021): 148–50. http://dx.doi.org/10.24223/1999-5555-2021-14-2-148-150.

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The article is devoted to the so-called "war of currents", which unfolded in the United States in the late 19th-early 20th century. The winner of this "war" was a talented Serbian inventor Nikola Tesla. He professed the ideas of alternating current. He was opposed by the famous American businessman and scientist T. Edison. Enterprises of the latter produced machines running on direct current. It made a big profit. After a number of conflicts, Tesla, who worked for Edison, left his company and organized a business of his own jointly with an industrialist D. Westinghouse. Tesla's ideas and projects won a landslide victory. The development of direct current systems ended in the late 1920s, despite the efforts of T. Edison. N. Tesla was at the origins of alternating current systems, the appearance of electric motors, robotics, wireless charging devices and much more. Today, the ideas of the great Serbian inventor, even the most fantastic ones, are experiencing a rebirth.
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Crombé, A., T. Tourdias, A. Doreille, M. Durieux, E. De Roquefeuil, A. Bigourdan, S. Molinier, and V. Dousset. "Détection des lésions démyelinisantes actives de sclérose en plaque à 3 Teslas : comparaison après injection des séquences. 3D T1 Fspgr et axial T1 Spin echo." Journal of Neuroradiology 41, no. 1 (March 2014): 12. http://dx.doi.org/10.1016/j.neurad.2014.01.034.

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Grolez, G., P. Jissendi, R. Lopes, C. Delmaire, L. Defebvre, D. Devos, and C. Moreau. "Mise au point de biomarqueurs d’altération du métabolisme du fer et d’atrophie cérébrale dans la sclérose latérale amyotrophique (SLA) sporadique : étude en IRM 3 Teslas." Revue Neurologique 170 (April 2014): A196. http://dx.doi.org/10.1016/j.neurol.2014.01.524.

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Palacio, Juan David, Maria Alejandra Gomez-Valero, Paula Andrea Bustamante-Gomez, Pilar Arroyave-Sierra, Cristian David Vargas-Upegui, Julian Pineda-Zapata, Gabriel Castrillon, Daniel Camilo Aguirre-Acevedo, and Carlos Lopez-Jaramillo. "Rostral Middle Frontal Volumetric Differences in Bipolar Offspring versus Community Controls Offspring." International Journal of Psychological Research 12, no. 2 (September 5, 2019): 48–58. http://dx.doi.org/10.21500/20112084.3971.

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Neuroanatomical findings in the anterior limbic network in bipolar disorder (BD) adults have not been replicated in other populations such as bipolar offspring (BO). The aim of this study was to compare some brain areas volumes between BO with and without a lifetime affective disorder (AD) to a group of community control offspring (CCO). Methods: A descriptive observational cross-sectional study was carried out, with multiple comparison groups. Seven subjects (11-17 years old) from the BO with AD group were compared to seven subjects from the BO without AD group and seven subjects from the CCO group (match by age, gender and Tanner stage). Magnetic resonance imaging was performed with a Philips 3 Teslas device and volumetric segmentation was performed with the Freesurfer image analysis suite. Results: A larger size was found in the right middle frontal rostral region in the BO with AD group compared to the other two groups (p = 0.041). A higher volume was also found in BO with AD group in the left pars opercularis (Cohen d = 0.63) and in the right cingulate isthmus (d = 0.53) when compared with BO without AD group, and in the right hippocampus (d = 0.53) when compared to CCO group. A smaller volume was found in the BO without AD group versus CCO group in the left anterior caudate (d = 0.6). The BO groups (with and without AD) compared to CCO have a higher volume in the right frontal pole (d = 0.52). These volumetric differences can be attributed to the condition of BO with AD.
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Naor, Michael, Alex Coman, and Anat Wiznizer. "Vertically Integrated Supply Chain of Batteries, Electric Vehicles, and Charging Infrastructure: A Review of Three Milestone Projects from Theory of Constraints Perspective." Sustainability 13, no. 7 (March 24, 2021): 3632. http://dx.doi.org/10.3390/su13073632.

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This research utilizes case study methodology based on longitudinal interviews over a decade coupled with secondary data sources to juxtapose Tesla with two high-profile past mega-projects in the electric transportation industry, EV-1 and Better Place. The theory of constraints serves as a lens to identify production and market bottlenecks for the dissemination of electric vehicles. The valuable lessons learned from EV1 failure and Better Place bankruptcy paved the way for Tesla’s operations strategy to build gigafactories which bears a resemblance to Ford T mass production last century. Specifically, EV1 relied on external suppliers to develop batteries, while Better Place was dependent on a single manufacturer to build cars uniquely compatible with its charging infrastructure, whereas Tesla established a closed-loop, green, vertically integrated supply chain consisting of batteries, electric cars and charging infrastructure to meet its customers evolving needs. The analysis unveils several limitations of the Tesla business model which can impede its worldwide expansion, such as utility grid overload and a shortage of raw material, which Tesla strives to address by innovating advanced batteries and further extending its vertically integrated supply chain to the mining industry. The study concludes by sketching fruitful possible avenues for future research.
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Pastrana, Miguel, Cristina Muñoz-Linares, Emilio Ojeda, Rafael Fores, Beatriz Brea, Martin Cabero, Daniel Morillo, et al. "Paroxysmal Nocturnal Hemoglobinuria and Magnetic Resonance Imaging." Blood 122, no. 21 (November 15, 2013): 4873. http://dx.doi.org/10.1182/blood.v122.21.4873.4873.

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Abstract Paroxysmal Nocturnal Hemoglobinuria (PNH) is a rare and complex disease characterized by a severe prothrombotic state caused by a complement system mediated hemolysis. The introduction of the anti-C5 antibody, Eculizumab, has been conducted in many Hematology units worldwide to adopt new diagnostic tools to evaluate new and old PNH patients in order to consider the adequacy of the adoption of this new drug in each case. Magnetic Resonance Imaging (MRI) allows a more adequate and profitable approach in PNH that other radiology techniques used for this purpose. In the last four years Hematology and Radiology units in our Hospital have collaborate in the clinical evaluation of PNH patients performing MRI (cranioencephalic, thoracic and/or abdominal) in acute complications of PNH patients (9 patients) or as a programmed protocoled evaluation previous to consider Eculizumab treatment (14 patients). The protocoled evaluation consists in thoracic and abdominal MRI evaluations in all cases, and cranioencephalic MRI (with independence of the presence of neurological symptoms) in 9 cases. The PNH patients were examined with 1.5 Teslas magnet for cranioencephalic,thoracic and abdominal MRI and with 3.0 Teslas magnet for some cranioencephalic MRI (Achieva Magnets; Philips Healthcare, Best, The Netherlands). Different protocols designed for the study of this pathology, using morphological sequences with different empowerment, functional sequences and angiographic studies after administration of intravenous contrast (gadobutrol) have been used. In the abdominal explorations had been performed calculations of T2 * for the quantification of deposit of iron in liver and kidney. The first group of patients (incidental studies in acute/chronic situations) included Classical and with other bone marrow failure syndrome (BMFS) Parker’s types. The second group (protocoled studies previous consideration of Eculizumab therapy) consisted on 11 Classical Parker’s type patients with active hemolysis (LDH increased 3-13 times over normal levels) and elevated PNH clone (73-99% negative GPI granulocytes by FLAER cytometry); and 3 with BMFS Parker’s type patients (LDH increased 2-6 times over normal levels) with lower PNH clone (43-50% negative GPI granulocytes by FLAER cytometry). Thrombosis was found in four cases, one in the inferior cava and and three arterial (two cerebral and one in descendent aorta). In three patients this finding implied to initiate Eculizumab therapy. Minor ischemic brain changes were displayed by three patients. None of the eighteen patients explored with thoracic MRI, displayed pulmonary hypertension signs despite the elevation of pro-BNP in eight of them. Iron overload in the liver and/or kidneys were very frequent. The finding of a reversal of the normal cortical and medullary intensities on T1 and T2 weighted images of both kidneys was evident in the majority of patients with severe PNH types. Interestingly, one patient with a chronic PNH severe form displayed no renal iron cortical after two years on Eculizumab therapy. This finding was also evident in patients with active hemolysis in the past but with very low PNH clones and clinical remission of the disease. Many other incidental discoveries includes cholelithiasis, splenomegaly, kidney arterial vessel constriction, vascular anomalies, kidney and vesical stones, adrenal adenoma, atheromatosis at different levels, Tornwaldt cyst, hamartoma, hemangiomas and abnormal bone marrow signal. MRI is the best imaging technique to diagnose thrombosis in PNH patients and to control evolution. Moreover, in the cerebrovascular setting allows a more fine and precise diagnosis of the minor pathologic thrombotic changes. MRI is the only imaging technique that permits to evaluate the iron overload that in some PNH cases could be underestimated and needs quelation therapy. In our opinion all new patients with classical severe hemolytic PNH must be evaluated prospectively with MRI. The collaboration of the Radiology team with the Hematologist is fundamental to acquire expertise in this rare disease. Disclosures: Pastrana: Alexion Pharmaceuticals: Speakers Bureau. Ojeda:Alexion Pharmaceuticals: Consultancy, Speakers Bureau.
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Flores-Gutiérrez, Enrique Octavio, Juan José Cervantes, Marina Torres Álvarez, Alcauter Solórzano, and Sarael Alcauter Solórzano. "Procesamiento de la música en el primer episodio de trastorno depresivo mayor sin tratamiento." Salud Mental 36, no. 6 (January 1, 2013): 449. http://dx.doi.org/10.17711/sm.0185-3325.2013.055.

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El propósito de este estudio fue registrar diferencias durante la audición de dos tipos diferentes de música en pacientes con Trastorno Depresivo Mayor (TDM), comparados con sujetos sanos, mediante imagen por resonancia magnética funcional (IRMf). La actividad cerebral con estímulos musicales ha sido investigada ampliamente en sujetos sanos, pero son escasos los estudios del procesamiento de la música en estados de patología mental, particularmente en el TDM. Los estudios en esta área interdisciplinaria proveen una nueva perspectiva de investigación para explorar los sustratos neurobiológicos del TDM. Participaron 20 sujetos de sexo masculino: 10 pacientes con TDM (34 ±7 años) y 10 sujetos control (33 ± 7 anos). Los pacientes se seleccionaron en el servicio de pre-consulta del Instituto Nacional de Psiquiatría Ramón de la Fuente Muñiz (INPRFM) de la Ciudad de México, y los sujetos control entre los trabajadores del propio Instituto que respondieron a la invitación. Todos los participantes contestaron, con fines de confirmar el diagnostico, las escalas de ansiedad y depresión de Hamilton, los inventarios de Beck para ansiedad y depresión y el SCL-90-R. A los pacientes se les aplico además el MINI-mental test. Para la IRMf se uso un equipo Philips Achieva de tres Teslas en el INPRFM, el análisis se hizo con el formato SPM2 usando el sistema MRIcro. Los estímulos experimentales fueron una obra musical de JS Bach validada como tranquila y otra de J Prodromides validada como inquietante. Los resultados muestran diferencias tanto entre los grupos de sujetos como entre los tipos de música: en todos los casos se activo el área parahipocampal, la cola del núcleo caudado y la corteza temporal auditiva. Concluimos que el procesamiento neurobiológico de la música es afectado por el TDM. Se discuten las implicaciones clínicas y cognoscitivas de estos hallazgos.
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Muthusamy, Kalai A., Bhooma R. Aravamuthan, Morten L. Kringelbach, Ned Jenkinson, Natalie L. Voets, Heidi Johansen-Berg, John F. Stein, and Tipu Z. Aziz. "Connectivity of the human pedunculopontine nucleus region and diffusion tensor imaging in surgical targeting." Journal of Neurosurgery 107, no. 4 (October 2007): 814–20. http://dx.doi.org/10.3171/jns-07/10/0814.

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Object The pedunculopontine nucleus (PPN) region of the brainstem has become a new stimulation target for the treatment of gait freezing, akinesia, and postural instability in advanced Parkinson disease (PD). Because PD locomotor symptoms are probably caused by excessive γ-aminobutyric acidergic inhibition of the PPN, low-frequency stimulation of the PPN may overcome this inhibition and improve the symptoms. However, the anatomical connections of this region in humans are not known in any detail. Methods Diffusion weighted magnetic resonance (MR) images were acquired at 1.5 teslas, and probabilistic tractography was used to trace the connections of the PPN region in eight healthy volunteers. A single seed voxel (2 × 2 × 2 mm) was chosen in the PPN just lateral to the decussation of the superior cerebellar peduncle, and the Diffusion Toolbox of the Oxford Centre for Functional Magnetic Resonance Imaging of the Brain was used to process the acquired MR images. The connections of each volunteer's PPN region were analyzed using a human brain MR imaging atlas. Results The PPN region was connected with the cerebellum and spinal cord below and to the thalamus, pallidum, subthalamic nucleus, and motor cortex above. The regions of the primary motor cortex that control the trunk and upper and lower extremities had the highest connectivity compared with other parts of motor cortex. Conclusions These findings suggest that connections of the PPN region with the primary motor cortex, basal ganglia, thalamus, cerebellum, and spinal cord may play important roles in the regulation of movement by the PPN region. Diffusion tensor imaging tractography of the PPN region may be used preoperatively to optimize placement of stimulation electrodes and postoperatively it may also be useful to reassess electrode positions.
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