Results 31 to 40 of about 9,108,764 (249)

Surface Hierarchy: Macroscopic and Microscopic Design Elements for Improved Sliding on Ice

open access: yesLubricants, 2021
Frictional interaction with a surface will depend on the features and topography within the contact zone. Describing this interaction is particularly complex when considering ice friction, which needs to look at both the macroscopic and microscopic ...
Karlis Agris Gross   +5 more
doaj   +1 more source

Evaluation of the real contact area in three-body dry friction by micro-thermal analysis [PDF]

open access: yes, 2009
Many tribological properties and wear mechanisms occurring on the micro-and nanoscale are strongly controlled by the so-called real contact area (Ar) which is a small fraction of the nominal or apparent contact area (Aa). The determination of Ar is often
Djilali, Toufik   +11 more
core   +1 more source

High-Precision Tribometer for Studies of Adhesive Contacts

open access: yesSensors, 2023
Herein, we describe the design of a laboratory setup operating as a high-precision tribometer. The whole design procedure is presented, starting with a concept, followed by the creation of an exact 3D model and final assembly of all functional parts. The
Iakov A. Lyashenko   +3 more
doaj   +1 more source

Clinical evaluation of differences in proximal contact strength of various fixed dental prosthesis materials

open access: yesIndian Journal of Dental Research, 2018
Objective: The study compared the proximal contact strength (CS) of different fixed dental prosthesis (FDP) materials. Materials and Methods: Thirty volunteers participated in this study with definitive inclusion and exclusion criteria. Participants were
N Gopi Chander, Arnob Biswas
doaj   +1 more source

Finite element based surface roughness study for ohmic contact of microswitches [PDF]

open access: yes, 2012
Finite element method (FEM) is used to model ohmic contact in microswitches. A determinist approach is adopted, including atomic force microscope (AFM) scanning real contact surfaces and generating rough surfaces with three-dimensional mesh.
Colin, Stephane   +12 more
core   +1 more source

Experimental Study on Pot Damage and Contact Stress Distribution Characteristics of Oil Sunflower Plug Seedlings

open access: yesApplied Sciences, 2022
To reveal the collision damage mechanisms of plug seedlings and improve the quality of seedlings, the kinetics equations of the plug seedlings were established based on the generalized Hertz-theory.
Fandi Zeng   +5 more
doaj   +1 more source

Effect of Storage Reservoir on Fluid Velocity in Lateral Flow Paper Device

open access: yesEngineering Proceedings, 2023
Paper-based microfluidics provides a versatile platform for numerous applications, including diagnostics at the point of care, environmental detection, and food quality control.
Hamza Abbas   +5 more
doaj   +1 more source

Study on Contact Between Double Metal Composite and Pipe Power Slip for Offshore Well

open access: yesPolish Maritime Research, 2017
The whole process of clamping offshore well double metal composite pipe was established, Reviewing the problems that in the oil and gas wells the double metal composite pipes frequently get plastic damage or even fracture failure when the power slips ...
Yu Wang   +3 more
doaj   +1 more source

MD simulation of the effect of contact area and tip radius on nanoindentation [PDF]

open access: yes, 2004
Molecular dynamics simulations of nanoindentation are performed on monocrystal copper. A new "contact atoms" method is presented for calculating the contact area.
Chen SD   +2 more
core   +1 more source

Factors influencing the length of the interproximal dental papilla between maxillary anterior teeth

open access: yesJournal of Dental Sciences, 2009
The presence of interproximal dental papillae in maxillary anterior teeth is a key esthetic factor and a great concern for dentists and patients. The aim of this study was to determine the factors associated with the length of the interproximal dental ...
Min-Chieh Chen   +7 more
doaj   +1 more source

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