|
|
|
| Registros recuperados: 10 | |
|
|
| Diaz, C. |
| In remote control, the master element which the user operates looks for practical and historical reasons like the slave arm and therefore features a series architecture, with a few drawbacks in terms of mass, dimensions, rigidity and mechanical complexity. To remedy these defects, we are now introducing a new master element with parallel kinematics. This syntactor, derived from Steward's manipulators, has six degrees of freedom and comprises six motor-driven links arranged on a fixed plate (the base) and a moving plate on which a 6-axis force transducer and a handle are mounted. The device is made artificially free along a few or all axes by means of a hybrid position/force control software which translates the wrench of forces applied by the operator on... |
| Tipo: Text |
Palavras-chave: Transducers; Manipulators; Robots; Marine technology; Kinematics. |
| Ano: 1990 |
URL: http://archimer.ifremer.fr/doc/1990/acte-1142.pdf |
| |
|
| |
|
|
| Sibuet, Jean-claude; Srivastava, Sp; Spakman, W. |
| The evolution of the Pyrenees, a mountain range between Iberia and Eurasia, has remained the subject of many debates between geologists and geophysicists for a long time. By combining the identification of seafloor spreading anomalies A33o to M0 in the Bay of Biscay with those in the North Atlantic, we have derived a position of a mean pole of rotation for the entire opening of the Bay of Biscay. Four hundred kilometers of shortening took place between the Iberian and Eurasian plates in the Pyrenean domain during the opening of the Bay of Biscay, from chrons M0 to A33o time (118 to 80 Ma). The deep seismic Etude Continentale et Oceanique par Reflexion et refraction Sismique (ECORS) profile shot across the Pyrenees and teleseismic data show the presence of... |
| Tipo: Text |
Palavras-chave: Pyrenean evolution; Kinematics; Seismic data; Tomography. |
| Ano: 2004 |
URL: https://archimer.ifremer.fr/doc/00000/10837/7748.pdf |
| |
|
|
| Sibuet, Jean-claude; Yeh, Yi-ching; Lee, Chao-shing. |
| The beginning of seafloor spreading in the South China Sea (SCS) is now established from IODP drilling Leg 349 at 33 Ma. Chron 12 (32 Ma) is the oldest chron identified in the SCS. The nature of the crust of the northeastern part of the SCS located north of chron C12, where chrons 15 to 17 were previously identified, is not oceanic but thinned continental crust intruded by volcanic elongated features emplaced 17-22 Ma ago. Based on magnetic anomalies identifications, the end of the SCS spreading could be either 15.5, 20.5 Ma (Briais et al., 1993; Barckhausen et al., 2014) or something else. However, as post-spreading magmatic activity (~ 13-3.5 Ma) largely masks the spreading fabric in particular near the axis of the east sub-basin, published locations of... |
| Tipo: Text |
Palavras-chave: South China Sea; Gravity; Magnetics; Structural and tectonic analyses; Kinematics. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00316/42686/42059.pdf |
| |
|
|
| Deverchere, Jacques; De Lepinay, Bernard Mercier; Cattaneo, Antonio; Strzerzynski, Pierre; Calais, Eric; Domzig, Anne; Bracene, Rabah. |
| Although often difficult to characterize, the relationship between a seismic rupture, its aftershock sequence, and cumulative subsurface or surface faulting or folding is an important challenge to modern seismology and seismotectonics. Among other benefits, it helps document fault length, slip, and magnitude relationships, reconstruct the evolution of the rupture process through historical and prehistorical times and identify the complexity of the deformation in its path toward the surface. This approach is a prerequisite to any seismic hazard assessment but is particularly difficult for faults whose surface trace projects offshore. A specific effort to identify and quantify the source parameters of large earthquakes in coastal areas is therefore needed,... |
| Tipo: Text |
Palavras-chave: Boumerdès-Zemmouri earthquake; Deformation; Kinematics; Margin. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00003/11440/7994.pdf |
| |
|
|
| Didia,Blessing C; Jaja,Blessing N. R. |
| Normal values of the tibial slope are necessary for realignment of displaced fractures of the tibia crest, repair of cruciate ligaments and correction of knee deformities. True lateral radiographs of normal knees were obtained in 119 males and 93 female Nigerian subjects. The tibial slope was then measured according to the anterior tibial cortex method. Mean angle in sampled subjects was 12.3 ± 4.90 (range: 0-240). Sex differences were statistically insignificant (p>0.05). This study provides reference values of tibial slope among indigenous adult Nigerians. It also highlights on the clinical relevance of the angle and the need to establish normal ranges in other African populations. |
| Tipo: Journal article |
Palavras-chave: Knee; Osteometry; Kinematics; Africans; Radiographs. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000100034 |
| |
|
| |
|
| |
|
| |
|
|
| Paiva Neto,A.O.; Leite,C.T.; Duarte,C.A.; Dias,D.P.M.; Döwich,G.; Queiroz Neto,A.; Lacerda Neto,J.C.. |
| ABSTRACT The aim of this study was to evaluate through three-dimensional kinematic analysis the influence of occlusal adjustment by tooth wear in masticatory biomechanics of horses. Seven clinically healthy thoroughbred Arabian horses with strong occlusal irregularities were used, of which seven castrated males and one female of between seven and nineteen years of age. Three digital video cameras and seven spherical reflective markers placed on the horses’ face were employed. The animals were filmed twice in succession: while chewing hay before and after the occlusal adjustment by tooth wear. Following that, kinematic analysis was made of the movements obtained by means of the images which were synchronized, segmented and reconstructed three-dimensionally... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Kinematics; Teeth; Chewing; Occlusion; Dentistry. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352018000100006 |
| |
| Registros recuperados: 10 | |
|
|
|
