Results 131 to 140 of about 173,446,445 (198)

Design and Multibody Dynamics Modeling of a Novel High‐Static‐Low‐Dynamic‐Stiffness Vibration Isolation Mechanism Based on Euler Buckling Characteristics

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Vibration isolation has long been a critical area of research, with the design of isolators based on the mechanical properties of Euler buckling beams representing one of the primary approaches. Traditionally, the focus has been on utilizing the negative stiffness characteristics of a post‐buckled Euler beam in parallel with positive stiffness
Yichang Feng, Yongpeng Gu, Gexue Ren, Suyuan Yu   +3 more
wiley   +1 more source

Temporal Hydrogen‐Bond Network Analysis Reveals Substrate‐Directed Connectivity in Dihydrofolate Reductase

Proteins: Structure, Function, and Bioinformatics, EarlyView.
ABSTRACT Hydrogen‐bond networks are central to protein function, but most network analyses rely on static representations that neglect how interactions evolve in time. Here, we introduce a framework that combines instantaneous and temporal graph analysis of hydrogen‐bond networks derived from molecular dynamics (MD) trajectories to quantify ligand ...
Tandac F. Guclu, Canan Atilgan, Ali Rana Atilgan   +2 more
wiley   +1 more source

Stair‐Climbing Wheelchairs for Enhanced Mobility: A Comprehensive Review of Fundamental Mechanisms, Design Concepts, and Performance Analysis

Journal of Field Robotics, EarlyView.
ABSTRACT People with physical disabilities face significant mobility challenges while climbing uneven surfaces and staircases. In these circumstances, traditional wheelchairs do not provide stable, safely controlled mobility, underscoring the importance of building superior stair‐climbing wheelchairs for both medical and infrastructure purposes.
Gopisetti Manikanta, S. M. Abhinandan, Anand Reddy, G. Chandana, Divya, P. Anil Kumar, Ch. Venkata Rao, Ashish Garg, Ravi C. Soni, Jogendra Kumar, Bhargav Akkinepally   +10 more
wiley   +1 more source

Robotics for Crop Pollination: Recent Advances and Future Direction

Journal of Field Robotics, EarlyView.
ABSTRACT There is great interest in alternative pollination strategies for crop production in the face of climate change and perennial threats to the traditional pollination mechanisms. This review explores the potential of robotic pollination as a promising solution to these challenges affecting crop fertilization, agricultural sustainability, and ...
Ranjan Sapkota, Matthew D. Whiting, Dawood Ahmed, Manoj Karkee   +3 more
wiley   +1 more source

Reduction of Primary and Secondary Vibrations of Reciprocating Machine with a Single Slider-Crank Mechanism by Balancer Shaft [PDF]

The vibration of the reciprocating machine is induced by unbalanced inertia force due to the motion of these machine elements, slider, crank and connecting rod, during its operation.
13360, Goto, Daichi, 13363, 13364, ニシハタ, ユウト, ゴトウ, ダイチ, 岡部, 匡, 西畠, 裕人, 濱畑, 貴之, オカベ, タダシ, 12735, Hamahata, Takayuki, 後藤, 大地, ハマハタ, タカユキ, Nishihata, Yuto, 30347, 12734, Okabe, Tadashi, 濵畑, 貴之   +18 more
core  

Machine learning‐driven advances in carbon‐based quantum dots: Opportunities accompanied by challenges

Responsive Materials, EarlyView.
Machine learning provides a unifying framework to connect structure, fluorescence properties, and applications of carbon‐based quantum dots. This review highlights how data‐driven strategies enable fluorescence regulation, reveal underlying mechanisms, and accelerate the rational design of functional carbon dots.
Liangfeng Chen, Siwei Yang, Xiangqian Cui, Ziheng Liu, Hang Wang, Yongqiang Li, Peng He, Miao Wang, Guqiao Ding   +8 more
wiley   +1 more source

How ventures maintain stakeholder support amidst operational legitimacy threats

Strategic Entrepreneurship Journal, EarlyView.
Abstract Research Summary We explore how ventures mitigate operational legitimacy threats—threats that originate within the venture and challenge claims relating to the venture's ability to deliver on its promised value proposition. Through an inductive study of four ventures working to deliver their promised products following successful crowdfunding ...
Alex Murray, Susan Cohen, Farhan Iqbal
wiley   +1 more source

Crank mechanism of a gas V-sixteen engine

, 2010
Diploma thesis is trying to analyze crank mechanism of a gas V-sixteen engine. Kinematics and balance crank mechanism are analyzed, dynamic model parameters are dermined, natural frequency of the torsional system are calculated, coupling parameters are ...
Čep, David
core  

CMesh: A Polymer‐Free Carbon Nanotube Scaffold for Robust TEM Specimen Preparation of Porous Graphene

Small, EarlyView.
CMesh, a polymer‐free carbon nanotube scaffold, reinforces pristine and pre‐existing porous graphene during TEM specimen preparation while preserving clean suspended imaging windows. The tunable mesh enables high‐yield transfer onto standard grids, atomic‐resolution imaging of nanopores and defects, and in situ observation under demanding microscopy ...
Yueqing Shen, Emad Oveisi, Ranadip Goswami, Zongyao Zhou, Heng‐Yu Chi, Kuang‐Jung Hsu, Archisman Ghosh, Kumar Varoon Agrawal   +7 more
wiley   +1 more source

Cross‐Scale Engineering of Single‐Atom Catalysts from Local Planar Coordination to Spatial Architectures

Small, EarlyView.
This Review presents a cross‐scale framework for single‐atom catalysts, spanning in‐plane and out‐of‐plane coordination; primary coordination, secondary‐sphere interactions, through‐space microenvironments and support interfaces; individual sites and macroscopic architectures; and static design and directed dynamic reconstruction.
Dazhi Yao, Siheng Yang, Shuhao Wang, Bernt Johannessen, Cheng Tang   +4 more
wiley   +1 more source