نتایج جستجو برای: skilled mechanical arms
تعداد نتایج: 277259 فیلتر نتایج به سال:
Objective The aim of the present study is to report on the reduction of edema of lymphedematous arms just by treating the lower limbs. Methods A 16-year-old girl reported that she has started having right lower limb edema at the age of three. At age 13, she performed a lymphoscintigraphy that confirmed the diagnosis of primary lymphedema of the four limbs. Recently she sought treatment at the...
Kinematic modeling of joints is an important element for proper motion analysis of tasks, including the estimation of muscle lengths and moment arms [Delp and Loan, 1995]. In general, anatomical axes of rotation and joint centres are obtained from the literature and refined to produce improved fidelity of motion [Buford and Andersen, 2002]. Various applications will require different levels of ...
The mechanical and electrical properties of CdTe tetrapod-shaped nanocrystals have been studied with atomic force microscopy. Tapping mode images of tetrapods deposited on silicon wafers revealed that they contact the surface with three of its arms. The length of these arms was found to be 130+/-10 nm. A large fraction of the tetrapods had a shortened vertical arm as a result of fracture during...
Silkmoth chorion, the proteinaceous major component of the eggshell, with extraordinary mechanical and physiological properties, consists of a complex set of proteins, which have a tripartite structure: a central, evolutionarily conserved, domain and two more variable 'arms'. Peptide-analogues of silkmoth chorion protein central domain segments have been synthesized. Laser-Raman and infrared sp...
In this paper we propose Variable Stiffness actuation [1] as a viable mechanical/control co–design approach for guaranteeing control performance for robot arms that are inherently safe to humans in their environment. A new actuator under development in our Lab is then proposed, which incorporate the possibility to vary transmission stiffness during motion execution, thus allowing substantial mo...
The mode I energy release rate, including the effect of residual stresses, was evaluated for both adhesive and laminate double cantilever beam specimens. The energy release rate can be partitioned into a mechanical term and a residual stress term in beam theory. The beamtheory mechanical term is not very accurate, but can be corrected by a slight modification to a previous correction factor. Th...
دیابت از معضلات زیستی زندگی در سبک جدید در جوامع بشری به ویژه کشورهای در حال توسعه می باشد. عوامل محیطی و ژنتیکی به صورت متقابل در بروز و تشدید این بیماری موثر می باشند. یکی از ژن هایی که در تحقیقات بسیار زیاد در بین جوامع مختلف نقش آن در دیابت به اثبات رسیده است. فاکتور رونویسی tcf7l2 میباشد که بروی کروموزوم شماره 10قرار گرفته دو snp برای این ژن شامل rs12255372 و rs7903146در سایتncbi ثبت شده ا...
Robotic arm is a mechanical arm to perform the desired task. In today’s world there is an increasing need to create artificial arms for different inhuman situations where human interaction is difficult or impossible. Humans pick things up without thinking about the steps involved. So the robotic arm is controlled manually by using wired and wireless. In this paper, various methods were studied ...
This paper reports mechanical testing and modeling results for the McKibben artificial muscle pneumatic actuator. This device, first developed in the 1950's, contains an expanding tube surrounded by braided cords. We report static and dynamic length-tension testing results and derive a linearized model of these properties for three different models. The results are briefly compared with human m...
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