Results 31 to 40 of about 52,446 (303)

Joint variable stiffness of musculoskeletal leg mechanism for quadruped robot

Advances in Mechanical Engineering, 2017
When the quadruped robot is in locomotion such as jumping and running with higher speed, there is non-continuous contact force between the foot and the environment inevitably. In order to achieve the flexible force interaction of the bionic legs with the
Jingtao Lei, Jianmin Zhu, Ping Xie, MO Tokhi   +3 more
doaj   +1 more source

Impedance control for variable stiffness mechanisms with nonlinear joint coupling [PDF]

2008 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2008
The current discussion on physical human robot interaction and the related safety aspects, but also the interest of neuro-scientists to validate their hypotheses on human motor skills with bio-mimetic robots, led to a recent revival of tendon-driven robots.
Thomas Wimböck, Christian Ott 0001, Alin Albu-Schäffer, Andreas Kugi, Gerd Hirzinger   +4 more
openaire   +2 more sources

Keratin 19 as a prognostic marker and contributing factor of metastasis and chemoresistance in high‐grade serous ovarian cancer

Molecular Oncology, EarlyView.
Keratin 19 (KRT19) is overexpressed in high‐grade serous ovarian cancer with high levels of Kallikrein‐related peptidases (KLK) 4–7 and is associated with poor survival. In vivo analyses demonstrate that elevated KRT19 increases peritoneal tumour burden.
Sophia Bielesch, Isabel Vogel, Sina Nokodian, Johanna Moeller, Antonia Blechschmidt, Vicky Hecht, Vanessa Kuentzel, Katharina Thiedig, Melissa Schwab, Oliver Schilling, Holger Bronger, Marion Kiechle, Viktor Magdolen, Tobias Dreyer   +13 more
wiley   +1 more source

A New Variable Stiffness Spring Using a Prestressed Mechanism

, 2010
A novel design of a semi-active variable stiffness element is proposed, with possible applications in vibration isolation. Semi-active vibration isolators usually use variable dampers.
Saeed Behzadipour, Simon Guest, Mojtaba Azadi   +2 more
core   +2 more sources

Design and Analysis of a Novel Variable Stiffness Joint Based on Leaf Springs

Applied Sciences
In response to challenges like the complexity and limited scalability of existing variable stiffness joints, a novel variable stiffness joint, based on leaf spring elements, is introduced in this paper. The joint stiffness can be adjusted in real time by
Caidong Wang, Yafeng Gao, Yapeng Xu, Xinjie Wang, Liangwen Wang   +4 more
doaj   +1 more source

Design and Analysis of a Novel Truss-Shaped Variable-Stiffness Deployable Robotic Grasper

IEEE Access, 2020
This paper presents a novel truss-shaped variable-stiffness deployable robotic grasper to grasp large unknown objects, the grasper comprises a series of basic modules and has the advantages of a large workspace, adjustable stiffness, and a high deploy ...
Changqing Gao, Jiahao Wang, Xiaojun Yang, Bing Li   +3 more
doaj   +1 more source

Hippo pathway at the crossroads of stemness and therapeutic resistance in breast cancer

Molecular Oncology, EarlyView.
Dysregulation of the Hippo pathway drives nuclear accumulation of YAP/TAZ, activating stemness‐related transcriptional programs that sustain breast cancer stemness and fuel therapeutic resistance across subtypes, underscoring Hippo signaling as a targetable vulnerability. Figure created and edited with BioRender.com.
Giulia Schiavoni, Antonella Palmese, Stefano Scalera, Laura Cipriani, Davide Mascolo, Patrizia Vici, Teresa Arcuri, Lorena Filomeno, Eriseld Krasniqi, Giovanni Blandino, Giulia Bon, Marcello Maugeri‐Saccà   +11 more
wiley   +1 more source

Metastasis on pause: How dormant tumor cells stay hidden within the tumor microenvironment and evade immune surveillance

Molecular Oncology, EarlyView.
Dormant cancer cells can hide in distant organs for years, evading treatment and the immune system. This review highlights how signals from the surrounding tissue and immune environment keep these cells inactive or trigger their reawakening. Understanding these mechanisms may help develop therapies to eliminate or control dormant cells and prevent ...
Kanishka Tiwary, Jose Javier Bravo‐Cordero   +1 more
wiley   +1 more source

A bifurcation study to guide the design of a landing gear with a combined uplock/downlock mechanism [PDF]

, 2014
This paper discusses the insights that a bifurcation analysis can provide when designing mechanisms. A model, in the form of a set of coupled steady-state equations, can be derived to describe the mechanism.
Lowenberg, Mark H, James Knowles (1252122), Neild, Simon A, Simon A. Neild (5491001), Knowles, James A C, Mark H. Lowenberg (7121948), Bernd Krauskopf (100472), Krauskopf, Bernd   +7 more
core   +1 more source

Design of a Variable Stiffness Joint Module to Quickly Change the Stiffness and to Reduce the Power Consumption

IEEE Access, 2020
Variable stiffness actuators (VSA) are finding wide applications in robotics to enhance safety during interactions with stiff environments. Researchers have proposed various design architectures like antagonistic actuation, which requires both the motors
Nagamanikandan Govindan, Shashank Ramesh, Asokan Thondiyath   +2 more
doaj   +1 more source