Results 71 to 80 of about 12,048 (309)
, 2014 The variation of the shear strength of infilled rock joints under cyclic loading and constant normal stiffness conditions is studied. To simulate the joints, triangular asperities inclined at angles of 9.5° and 18.5° to the shear movement were cast using
Aziz, Naj +2 more
core +1 more source
Compliant Pneumatic Feet with Real‐Time Stiffness Adaptation for Humanoid Locomotion
Advanced Robotics Research, EarlyView.A compliant pneumatic foot with real‐time variable stiffness enables humanoid robots to adapt to changing terrains. Using onboard vision and pressure control, the foot modulates stiffness within each gait cycle, reducing impact forces and improving balance. The design, cast in soft silicone with embedded air chambers and Kevlar wrapping, offers durable,
Irene Frizza +3 more
wiley +1 more source
, 1992 To use the distinct element method, it is necessary to discretize the problem domain into polygons in two dimensions (2 D) or into polyhedra in three dimensions (3 D).
H. Ucpirti +9 more
core +1 more source
The Planar Shape of Rock Joints [PDF]
Rock Mechanics and Rock Engineering, 2009 Knowing the planar shape of discontinuities is important when characterizing discontinuities in a rock mass. However, the real discontinuity shape is rarely known, since the rock mass is usually inaccessible in three dimensions. Information on discontinuity shape is limited and often open to more than one interpretation. This paper discusses the planar
Zhang, Lianyang, Einstein, Herbert H.
openaire +3 more sources
Muscle Control of an Extra Robotic Digit
Advanced Robotics Research, EarlyView.This study compares muscle‐ and movement‐based control for operating a supernumerary robotic thumb. While movement control performs better in the proposed tasks, muscle‐based (EMG) control promotes broader motor learning. The results highlight the promise and challenges of using biosignals for human augmentation, offering new insights into intuitive ...
Julien Russ +7 more
wiley +1 more source
CHARACTERIZATION OF JOINTED ROCK MASSES FOR ROCK ANCHORS
Doboku Gakkai Ronbunshu, 1994 ロックアンカーの設計・施工における定量的な岩盤評価を目的に, 原位置引抜き実験を行った岩盤を対象にして詳細な調査・試験を実施し, 調査・試験手法による結果の相違, 調査・試験結果間相互の関係を考察した. その結果から, ロックアンカーを対象構造物とした場合の岩盤の力学特性推定法として, 表面波探査とボーリング孔内載荷試験とを組み合わせた方法を提案し, その具体的な手順, 精度および適用性を示した.
Seiji Ebisu +3 more
openaire +2 more sources
Grip and Grasp: Lizard Claw Inspired Robotic Manipulators
Advanced Robotics Research, EarlyView.Our study identifies the most effective lizard claw shape for use as an end effector in a bioinspired robotic manipulator. By examining key geometric features and combining them into comparative indices, the Crotaphytus collaris claw is found to be the best fit.
Hyeon Lee +4 more
wiley +1 more source
Characterisation and numerical modelling of the geometry of rock joints
, 2022 This paper describes the measurement and analysis of the roughness of natural rock joints with the aim of proceeding to their characterisation and comparison.
Ramos, A. +4 more
core
CD4+ Tregs Drive Post‐Ischemic Sprouting Angiogenesis via Endothelial YY1/MAML1 Reactivation
Advanced Science, EarlyView.ABSTRACT Microvascular complications of diabetes are chronic diseases of small vessels. We previously found that CD4+ regulatory T‐cells (Tregs) are markedly reduced in type 2 diabetes (T2D) after ischemic injury in both mice and humans, and that Treg deficiency in immunodeficient mice impairs vascular regeneration.
Hang Qu +10 more
wiley +1 more source
Advanced Science, EarlyView.Pancreatic neuroendocrine tumors frequently silence MEN1 through epigenetic mechanisms. Here, SIRT7 recruits DNMT1 to the MEN1 promoter, drives hypermethylation, and enhances DNA repair. Inhibiting SIRT7 restores MEN1, reduces MRN complex abundance, impairs double‐strand break repair, and sensitizes PanNET models to radiation, supporting SIRT7 as a ...
Jianyun Jiang +11 more
wiley +1 more source