Results 31 to 40 of about 149,089 (310)
Temperature and Humidity Effects on the Dynamic Stiffness of a Polyester Mooring Rope
Journal of Marine Science and Engineering, 2023 In this paper, the nonlinear stiffness of a polyester rope under dynamic loads at different temperatures was experimentally investigated. The effects and evolution of the average load, load period and load amplitude on dynamic stiffness were studied. The
Wenhua Li +5 more
doaj +1 more source
Research on Nonlinear Dynamics Modeling and Simulation of Harmonic Gear Drive
Jixie chuandong, 2021 Due to the particularity of the structure，the hysteretic stiffness and dynamic friction belong to the inherent properties of harmonic gear drive. Traditional models consider the stiffness as a fixed stiffness or segmented stiffness model，and the friction
Yang Luo +4 more
doaj
Seismic Resistance of Non-Linearly Deformable Large-Span Spatial Structures of Unique Buildings
Железобетонные конструкции, 2023 Analytical, computer and experimental modeling methods are applied in the study of seismic resistance and changing dynamic parameters of long-term loaded non-linearly deformed large-span spatial shell structures.
Saidmaksud R. Razzakov
doaj +1 more source
Reliable Dynamic Motions for a Stiff Quadruped [PDF]
, 2009 We present a kinodynamic planning methodology for a high-impedance quadruped robot to negotiate a wide variety of terrain types with high reliability. We achieve motion types ranging from dynamic, double-support lunges for efficient locomotion over extreme obstacles to careful, deliberate foothold and body pose selections which allow for precise ...
Roy, Nicholas +4 more
openaire +3 more sources
Biophysical approaches for studying viral entry
FEBS Letters, EarlyView.Viruses infect all living organisms and have been responsible for major epidemics and pandemics. Their ongoing evolutionary battle with host defenses creates a constant need for improved tools to study viral behavior. Advancing methods to probe viral attachment, fusion, and genome release deepen our understanding of how infections begin and support the
Inbar Yosibash, Raya Sorkin
wiley +1 more source
Dynamically variable negative stiffness structures
Science Advances, 2016 A novel active structure supports loads while dynamically and continuously changing stiffness by more than 100× in less than 10 ms.
Christopher B. Churchill +4 more
openaire +2 more sources
FEBS Letters, EarlyView.Cancer progression is regulated by the dynamic matrix code of the tumor microenvironment, which influences cellular behavior and disease development. Importantly, matrix remodeling in three‐dimensional cancer models more accurately reflects in vivo conditions compared to conventional two‐dimensional systems.
Sylvia Mangani +3 more
wiley +1 more source
A New Variable Stiffness Design: Matching Requirements of the Next Robot Generation
, 2008 — Facing new tasks, the conventional rigid design of robotic joints has come to its limits. Operating in unknown environments current robots are prone to failure when hitting unforeseen rigid obstacles. Moreover, safety constraints are a major aspect for
Hirzinger, Gerd +3 more
core +1 more source
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 +13 more
wiley +1 more source
Concentric left ventricular remodeling and aortic stiffness: a comparison of obesity and hypertension. [PDF]
, 2013 BACKGROUND: Increased thoracic ascending aortic stiffness is thought to contribute to concentric left ventricular hypertrophy and increased mortality, a pattern seen in hypertension.
Francis, JM +15 more
core +1 more source