Results 11 to 20 of about 9,736 (218)

Wave control of a flexible space tether based on elastic metamaterials

International Journal of Mechanical System Dynamics, 2023
This study proposes a spider‐web elastic metamaterial to suppress vibrations in space slender structures, such as flexible space tethers. The metamaterial consists of unit cells that are periodically distributed on the space tether to obtain band gaps ...
Yexiong Huang, Enmin Chen, Jialiang Sun, Dongping Jin   +3 more
doaj   +2 more sources

Correlations between pathogenic variants in DNA repair genes and anticancer treatment efficacy in stage IV non-small cell lung cancer: A large real-world cohort and review of the literature. [PDF]

Thorac Cancer, 2023
Our retrospective data suggest that in patients with stage 4 NSCLC, pathogenic variants in DDR pathway genes may be associated with higher efficacy of radiotherapy and immune checkpoint inhibitors. This should be further explored prospectively. Abstract Background Mutations in genes involved in DNA damage repair (DDR), a hallmark of cancer, are ...
Averbuch I, Tschernichovsky R, Icht O, Goldstein DA, Mutai R, Dudnik E, Rotem O, Peled N, Allen AM, Laufer-Geva S, Goldberg Y, Zer A.   +11 more
europepmc   +2 more sources

Fluorescence-line-selective soft X-ray absorption spectroscopy: a novel approach to element-specific electronic structure analysis. [PDF]

J Synchrotron Radiat
Fluorescence‐line‐selective soft X‐ray spectroscopy using a superconducting tunnel junction (STJ) detector was applied to probe the electronic states of strontium titanate, demonstrating the capability of the STJ detector for high‐energy‐resolution soft X‐ray absorption spectroscopy.A novel approach to soft X‐ray fluorescence‐yield absorption ...
Naito K, Nakajima N, Shiki S.
europepmc   +2 more sources

In-plane nonlinear postbuckling and buckling analysis of Lee’s frame using absolute nodal coordinate formulation

Curved and Layered Structures, 2023
In this study, four absolute nodal coordinate formulation (ANCF)-based approaches are utilized in order to predict the buckling load of Lee’s frame under concentrated load.
Shaukat Abdur Rahman, Lan Peng, Wang Jia, Wang Tengfei, Lu Nianli   +4 more
doaj   +1 more source

Concept of mathematical modeling of lumbar and thoracic spine based on elastic beam theory

Journal of Biomechanical Science and Engineering, 2022
Modeling of the human spine is important for establishing quantitative assessment methods of low back pain (LBP) caused by manual material handling (MMH). This study developed mathematical models of the lumbar and thoracic spine based on the elastic beam
Naoki KUDO, Yoji YAMADA, Xiaohan XIANG, Hibiki NAKAMURA, Yasuhiro AKIYAMA   +4 more
doaj   +1 more source

Dimensionless numerical analysis method for flexible body with large deformation, displacement and time-varying length

Nihon Kikai Gakkai ronbunshu, 2021
A tethered system, which is a multibody system in which multiple rigid bodies are connected via a flexible tether, is currently used for space and deep-sea exploration.
Riko OGAWARA, Yoshiaki TERUMICHI
doaj   +1 more source

Mechanical Deformation Analysis of a Flexible Finger in Terms of an Improved ANCF Plate Element

Machines, 2022
In recent years, flexible continuum robots have been substantially developed. Absolute nodal coordinates formulation (ANCF) gives a feasible path for simulating the behavior of flexible robots. However, the model of finger-shaped robots is often regarded
Yu Xing, Lei Liu, Chao Liu, Bo Li, Zishen Wang, Pengfei Li, Erhu Zhang   +6 more
doaj   +1 more source

Effects of Orbital Perturbations on Deployment Dynamics of Tethered Satellite System Using Variable-Length Element

IEEE Access, 2021
Orbital perturbations caused by the space environment will induce deviations compared with the prescribed motion trajectory or dynamic performance of the tethered satellite system (TSS).
Zhengfeng Bai, Xin Jiang
doaj   +1 more source

A Variable-Length Rational Finite Element Based on the Absolute Nodal Coordinate Formulation

Machines, 2022
The variable-length arbitrary Lagrange–Euler absolute nodal coordinate formulation (ALE-ANCF) finite element, which employs nonrational interpolating polynomials, cannot exactly describe rational cubic Bezier curves such as conic and circular curves. The
Zhishen Ding, Bin Ouyang
doaj   +1 more source

Reversible Transition between Discrete and 1D Infinite Architectures: A Temperature‐Responsive Cu(I) Complex with a Flexible Disilane‐Bridged Bis(pyridine) Ligand

Chemistry – A European Journal, Volume 29, Issue 38, July 6, 2023., 2023
Thermoresponsive molecular structure based on a disilane‐bridged bis(pyridyl) ligand and CuI is reported. Single‐crystal X‐ray analysis revealed that there were two polymorphs in the Cu(I) complex: octanuclear copper(I) complex at 20 °C and 1D staircase copper(I) polymer complex at −173 °C. The formation of these polymorphs is due to the flexibility of
Yongjin Zhao, Toyotaka Nakae, Satoshi Takeya, Mineyuki Hattori, Daisuke Saito, Masako Kato, Yoshinori Ohmasa, Shun Sato, Osamu Yamamuro, Tomasz Galica, Eiji Nishibori, Shiori Kobayashi, Tomohiro Seki, Teppei Yamada, Yoshinori Yamanoi   +14 more
wiley   +1 more source