Current Issue : July - September Volume : 2020 Issue Number : 3 Articles : 5 Articles
Background: The characterization of limb biomechanics has broad implications for analyzing and managing\nmotion in aging, sports, and disease. Motion capture videography and on-body wearable sensors are powerful tools\nfor characterizing linear and angular motions of the body, though are often cumbersome, limited in detection, and\nlargely non-portable. Here we examine the feasibility of utilizing an advanced wearable sensor, fabricated with\nstretchable electronics, to characterize linear and angular movements of the human arm for clinical feedback. A\nwearable skin-adhesive patch with embedded accelerometer and gyroscope (BioStampRC, MC10 Inc.) was applied\nto the volar surface of the forearm of healthy volunteers. Arms were extended/flexed for the range of motion of\nthree different regimes: 1) horizontal adduction/abduction 2) flexion/extension 3) vertical abduction. Data were\nstreamed and recorded revealing the signal â??patternâ? of movement in three separate axes. Additional signal\nprocessing and filtering afforded the ability to visualize these motions in each plane of the body; and the 3-\ndimensional motion envelope of the arm...............................
A puncture biopsy is a widely used, minimally invasive surgery process. During the needle\ninsertion process, the needle body is always in direct contact with a biological soft tissue. Tissue\nadhesion and different degrees of tissue damage occur frequently. Optimization of the needle surface,\nand especially the lubrication of the needle surface, can deal with these problems efficiently. Therefore,\nin this paper, a biocompatible hydrophilic coating was applied onto the surface of a needle to improve\nthe surface quality of the needle surface. Further, a simplified finite element model of insertion was\nestablished, and extracorporeal insertion experiments were used to verify the accuracy of the model.\nThen, by analyzing a simulation model of a coated needle and a conventional needle, the influence of\nthe application of the coated needle on the insertion process was obtained. It can be seen from the\nresults that the coating application relieved the force on the needle and the soft tissue during the\ninsertion process and could significantly reduce friction during the insertion process. At the same\ntime, the deformation of biological soft tissue was reduced, and the adhesion situation between the\nneedle and tissue improved, which optimized the puncture needle....
Newborn screening (NBS) for inborn metabolic disorders is a highly successful public\nhealth program that by design is accompanied..........................
Occlusal trauma caused by improper bite forces owing to the lack of periodontal membrane may lead to bone resorption, which is\nstill a problem for the success of dental implant. In our study, to avoid occlusal trauma, we put forward a hypothesis that a\nmicroelectromechanical system (MEMS) pressure sensor is settled on an implant abutment to track stress on the abutment and\npredict the stress on alveolar bone for controlling bite forces in real time..............................
The surface, corrosion and wear properties of new and in vivo exposed nickel titanium (NiTi) and stainless steel (SS) archwires used in orthodontic treatment were investigated. Electrochemical and tribo-electrochemical tests in artificial saliva were performed in order to define corrosion properties and to estimate wear rate of new and in vivo exposed NiTi and SS archwires. ...................................
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