Immunohistochemical Study of Creatine Kinase Isozymes in the Human Upper Limb Bud

1991 ◽  
Vol 141 (1) ◽  
pp. 15-17 ◽  
Author(s):  
H. Shinohara ◽  
M. Oguni ◽  
O. Tanaka ◽  
K. Kato
2021 ◽  
Vol 11 (13) ◽  
pp. 5865
Author(s):  
Muhammad Ahsan Gull ◽  
Mikkel Thoegersen ◽  
Stefan Hein Bengtson ◽  
Mostafa Mohammadi ◽  
Lotte N. S. Andreasen Struijk ◽  
...  

Wheelchair mounted upper limb exoskeletons offer an alternative way to support disabled individuals in their activities of daily living (ADL). Key challenges in exoskeleton technology include innovative mechanical design and implementation of a control method that can assure a safe and comfortable interaction between the human upper limb and exoskeleton. In this article, we present a mechanical design of a four degrees of freedom (DOF) wheelchair mounted upper limb exoskeleton. The design takes advantage of non-backdrivable mechanism that can hold the output position without energy consumption and provide assistance to the completely paralyzed users. Moreover, a PD-based trajectory tracking control is implemented to enhance the performance of human exoskeleton system for two different tasks. Preliminary results are provided to show the effectiveness and reliability of using the proposed design for physically disabled people.


Author(s):  
Zhi-Qiang Zhang ◽  
Lian-Ying Ji ◽  
Zhi-Pei Huang ◽  
Jian-Kang Wu

Development ◽  
1956 ◽  
Vol 4 (3) ◽  
pp. 254-264
Author(s):  
Ronan O'Rahilly ◽  
Ernest Gardner ◽  
D. J. Gray

The limbs of amniote embryos are characterized by a thickening of the epiblast at their tips (Balfour, 1885). Kölliker (1879) illustrated such a thickening in a section of a chick embryo and, according to Braus (1906), was responsible for the term ‘ectodermal cap’ (Ektodermkappe). Saunders (1948) showed in the chick by experimental means that ‘the thickened ectoderm at the apex of the bud’ is ‘essential to the formation of the limb’. A similar thickening has frequently been noted at the apex of developing mammalian limbs. It can be seen in figures 3, 4, and 5 of Lewis's (1902) paper onthe development of the upper limb in man. Bardeen & Lewis (1901, fig. 19) called attention to the thickened epithelium at the free edge of the human lower limb bud. Steiner (1929, fig. 5), in a study of the development of human skin, illustrated the ‘ectodermal cap’ in the upper limb of a 9-mm. human embryo.


Author(s):  
Giuseppe Averta ◽  
Cosimo Della Santina ◽  
Edoardo Battaglia ◽  
Federica Felici ◽  
Matteo Bianchi ◽  
...  

2021 ◽  
Vol 42 ◽  
pp. 122-127
Author(s):  
Cristian Copilusi ◽  
Ionut Geonea ◽  
Alexandru Margine ◽  
Adrian Rosca

This research addresses attention to human upper limb experimental analysis during feeding process aiding disabled persons. The research core is focused on the experimental process of obtaining the angular amplitudes and trajectories developed by the human upper arm during feeding process. The research originality consists on the obtained results which can be used in further researches for command and control of robotic assisting devices.


Author(s):  
D. Ascione ◽  
G. Laccetti ◽  
M. Lapegna ◽  
D. Romano

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