Results 61 to 70 of about 686 (201)

Characterisation of human hair follicle development

open access: yesJournal of Anatomy, EarlyView.
Schematic of hair follicle development in human skin. Hair follicle primordia of similar sizes, but different densities, are laid out across the skin. The distinction between terminal and vellus hair sites is not obvious at early stages of hair follicle development.
Zoe R. Sudderick   +4 more
wiley   +1 more source

按急回要求设计曲柄滑块机构的一种新解析法

open access: yesJixie chuandong, 2005
In the paper, a new method designing slider-crank mechanism is put forward. By solving a simple system of linear equation or utilizing the analytical formula given in the paper, the dimensions of slider-crank mechanism which meets the demands of quick ...
李建功, 王家金
doaj  

Analysis and simulation of Wiseman hypocycloid engine

open access: yesCogent Engineering, 2014
This research studies an alternative to the slider-crank mechanism for internal combustion engines, which was proposed by the Wiseman Technologies Inc. Their design involved replacing the crankshaft with a hypocycloid gear assembly.
Priyesh Ray, Sangram Redkar
doaj   +1 more source

TipQuant: a robust algorithm for quantitative analysis of spatiotemporally dynamic activities in tip‐growing cells

open access: yesNew Phytologist, EarlyView.
Tip Quantification enables quantitative analyses over versatile selections of regions of interest. Summary Cell polarity and tip growth rely on the dynamic spatial organization of signaling and structural components. Quantitative characterization of these spatiotemporal dynamics is critical for understanding polarized cell growth, yet manual ...
Jingzhe Guo   +7 more
wiley   +1 more source

Mechanism Design and Kinematics Analysis of Adaptive Rehabilitation Apparatus for Human Knee Joint

open access: yesJixie chuandong, 2020
The knee adaptive rehabilitation apparatus is designed, which consists of a swinging guide linkand a crank slider mechanism.According to ergonomics,the size range of the shank in the adaptive rehabilitation apparatus is determined by analyzing the motion
Tongtong Zhong   +4 more
doaj  

Understanding extracellular vesicle biology, isolation, and characterization: The theory of EV‐erything

open access: yesPeriodontology 2000, EarlyView.
Abstract Background Extracellular vesicles (EVs), especially exosomes, are nanoparticles increasingly recognized as key regulators of intercellular communication in both physiological and pathological aspects. Despite rapid progress, inconsistencies in nomenclature, isolation, and characterization continue to restrict translational advancement.
Paras Ahmad   +6 more
wiley   +1 more source

Investigating Behavior of Slider–Crank Mechanisms with Bearing Failures Using Vibration Analysis Techniques

open access: yesMathematics
This study focuses on investigating the behavior of slider–crank mechanisms with different bearing failures using a vibration analysis technique. The reliability and lifespan of bearings are crucial for such mechanisms, which convert rotary motion to ...
Mofareh Hassan Ghazwani, Van Vinh Pham
doaj   +1 more source

Fish Scales: A Multifunctional Biomaterial from Nature

open access: yesENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 5, September 2026.
Fish scales demonstrate nature's solution to impact protection through overlapping multilayered architecture. This biological design combines mineralized surfaces with collagen networks to achieve both flexibility and fracture resistance. The structural principles inspire advanced protective materials and biomedical implants, where damage tolerance ...
Liyao Dong, Xiaojie Sun, Xiguang Chen
wiley   +1 more source

机械式压力机曲柄六杆机构运动学特性分析

open access: yesJixie chuandong, 2011
Compared with crank and slider mechanism,the ultimate output component with crank toggle as a combination transmission mechanism has some better characteristics for transmitting movement and force.The relation of position,speed and acceleration between ...
王粟   +4 more
doaj  

Actuation Strategies for Underwater Jet‐Propelled Soft Robots

open access: yesJournal of Field Robotics, Volume 43, Issue 6, Page 3868-3892, September 2026.
ABSTRACT This review article examines jet‐propulsion mechanisms in underwater soft robotic systems, focusing exclusively on physically fabricated and experimentally validated robots. Covering research published from 2013 to 2025, this study classifies and evaluates jet‐propulsion robots based on their actuation mechanisms.
Angel Kitone   +3 more
wiley   +1 more source

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