Categorization of compensatory motions in transradial myoelectric prosthesis users

Background: Prosthesis users perform various compensatory motions to accommodate for the loss of the hand and wrist as well as the reduced functionality of a prosthetic hand. Objectives: Investigate different compensation strategies that are performed by prosthesis users. Study Design: Comparative analysis Methods: 20 able-bodied subjects and 4 prosthesis users performed a set of bimanual activities. Movements of the trunk and head were recorded using a motion capture system, and a digital video recorder. Clinical motion angles were calculated to assess the compensatory motions made by the prosthesis users. The video recording also assisted in visually identifying the compensations. Results: Compensatory motions by the prosthesis users were evident in the tasks performed (slicing and stirring activities) as compared to the benchmark of able-bodied subjects. Compensations took the form of a measured increase in range of motion, an observed adoption of a new posture during task execution, and pre-positioning of items in the workspace prior to initiating a given task. Conclusion: Compensatory motions were performed by prosthesis users during the selected tasks. These can be categorized into three different types of compensations

Spin relaxation in (110) and (001) InAs/GaSb superlattices

We report an enhancement of the electron spin relaxation time (T1) in a (110) InAs/GaSb superlattice by more than an order of magnitude (25 times) relative to the corresponding (001) structure. The spin dynamics were measured using polarization sensitive pump probe techniques and a mid-infrared, subpicosecond PPLN OPO. Longer T1 times in (110) superlattices are attributed to the suppression of the native interface asymmetry and bulk inversion asymmetry contributions to the precessional D'yakonov Perel spin relaxation process. Calculations using a nonperturbative 14-band nanostructure model give good agreement with experiment and indicate that possible structural inversion asymmetry contributions to T1 associated with compositional mixing at the superlattice interfaces may limit the observed spin lifetime in (110) superlattices. Our findings have implications for potential spintronics applications using InAs/GaSb heterostructures.Comment: 4 pages, 2 figure

Copernicus Marine Service ocean state report, issue 4

This is the final version. Available from Taylor & Francis via the DOI in this record. FCT/MCTE

Rundgesang der Kinder in Ludwigslust mit XXIV Veränderungen für Clavier Seiner und Ihro Königl: Hoheiten Friedrich und Sophie von Dänemark unterthänigst Zugeeignet und in Musick gesetzt / von H. O. Zinck

RUNDGESANG DER KINDER IN LUDWIGSLUST MIT XXIV VERÄNDERUNGEN FÜR CLAVIER SEINER UND IHRO KÖNIGL: HOHEITEN FRIEDRICH UND SOPHIE VON DÄNEMARK UNTERTHÄNIGST ZUGEEIGNET UND IN MUSICK GESETZT / VON H. O. ZINCK Rundgesang der Kinder in Ludwigslust mit XXIV Veränderungen für Clavier Seiner und Ihro Königl: Hoheiten Friedrich und Sophie von Dänemark unterthänigst Zugeeignet und in Musick gesetzt / von H. O. Zinck (1) Titelseite (1) Noten (2