Results 31 to 40 of about 8,550 (288)

Testing of Concrete Abrasion Resistance in Hydraulic Structures on the Lower Sava River [PDF]

open access: yes, 2012
The paper deals with the issues of resistance of concrete linings to long-term abrasion loading caused by waterborne particles, particularly for the proposed hydro power plants on the Sava River in Slovenia.
Kralj, Miha   +5 more
core   +2 more sources

Effects of Carbon Nanoparticles on Triboelectro‐Induced Surface Defects

open access: yesAdvanced Engineering Materials, EarlyView.
Carbon nanoparticles added to grease modify the electrocontact behavior. The synergy of particle concentration and electric current dominates the surface damage of metals in contact. Electrical surface damage caused by current leakage is a critical challenge in high‐performance applications such as electric vehicle (EV) drivetrains and wind turbine ...
Mohsen Tajedini   +6 more
wiley   +1 more source

Intercostal leiomyoma in a child: review of the literature

open access: yesThe Pan African Medical Journal, 2017
Leiomyomas of the chest wall are very rare. In a review of the current literature twelve cases were found, of which only one concerns of an intercostal leiomyoma of the chest wall.
Kleanthis Anastasiadis   +4 more
doaj   +1 more source

Process for preparing liquid metal electrical contact device [PDF]

open access: yes, 1977
The parts of an electrical contact device are treated by sputter etching to remove the parent metal oxide. Prior to exposure of the electrodes to any oxygen, a sacrificial metal is sputter deposited on the parts.
Berkopec, F. D.   +2 more
core   +1 more source

Can Ti‐Based MXenes Serve as Solid Lubricants for Brake Applications? A Tribological Study

open access: yesAdvanced Engineering Materials, EarlyView.
This study explores the first implementation of Ti‐based MXenes materials in brake pad friction composite material. The resulting composite material exhibits a 48% reduction in the wear rate; alongside significant improvements are observed for thermal and mechanical properties.
Eslam Mahmoud   +7 more
wiley   +1 more source

The process of interaction between abrasive disk and a workpiece while grinding under ultrasonic vibrations

open access: yesMATEC Web of Conferences, 2018
This research includes the analysis of kinematic relations between abrasive disk grains and the workpiece in the abrading process while applying ultrasonic vibrations (USV) on the workpiece.
Unyanin Alexandr, Khazov Alexandr
doaj   +1 more source

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

open access: yesAdvanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner   +9 more
wiley   +1 more source

A Case Report of Blood Sucking Behavior in a Patient with Borderline Personality Disorder [PDF]

open access: yesJournal of Kerman University of Medical Sciences, 2005
Self-mutilation is defined as intentional damaging of the body without intention to die. Patients with borderline personality disorder frequently mutilate themselves by means of cutting, burning and abrading their skin.
N Banazadeh, A.R Ghaffari Nejad
doaj  

How river rocks round: resolving the shape-size paradox [PDF]

open access: yes, 2014
River-bed sediments display two universal downstream trends: fining, in which particle size decreases; and rounding, where pebble shapes evolve toward ellipsoids. Rounding is known to result from transport-induced abrasion; however many researchers argue
Domokos, G.   +3 more
core   +5 more sources

Micropatterned Biphasic Printed Electrodes for High‐Fidelity on‐Skin Bioelectronics

open access: yesAdvanced Functional Materials, EarlyView.
Micropatterned biphasic printed electrodes achieve unprecedented skin conformity and low impedance by combining liquid‐metal droplets with microstructured 3D lattices. This scalable approach enables high‐fidelity detection of ECG, EMG, and EEG signals, including alpha rhythms from the forehead, with long‐term comfort and stability.
Manuel Reis Carneiro   +4 more
wiley   +1 more source

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