Results 101 to 110 of about 5,336 (243)

Experimental study on tribological properties of PTFE and glass reinforced PTFE-C15 for skid transport of heavy structures

open access: yesMaterials Research Express
Efficient transportation requires minimal frictional resistance. Skidding has become an alternative method of transporting heavy structures in recent years.
Cihan Gunes, Murat Makaraci
doaj   +1 more source

Experimental research steel grade «Steel 45» to abrasion wear, depending on the exit angle macrostructure fibers on the contact surface

open access: yesMATEC Web of Conferences, 2017
This paper describes the experimental research of the influence of the angle of exit of microstructure fibers to the contact surface wear abrasion steel grade «Steel 45».
Allenov Maksim Gennadievich   +2 more
doaj   +1 more source

Considerations for the Design of Sinusoidal Slug Testing Methods

open access: yesGroundwater, EarlyView.
Periodic hydraulic tests estimate aquifer properties using controlled groundwater‐level oscillations. Evaluating two sinusoidal slug‐test designs shows large motion errors when transfer‐link and flywheel ratios are high or variable. Rotating‐drive mechanisms are therefore suboptimal; stepper‐motor winches generate more accurate sinusoidal motion ...
Chris Turnadge   +2 more
wiley   +1 more source

Load‐To‐Failure of Cantilevered Provisional Implant‐Supported Prostheses: Conventional Versus 3D‐Printed Resins

open access: yesJournal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objective Cantilever extensions in full‐arch implant‐supported provisional prostheses represent a clinical challenge frequently associated with biomechanical complications. This study aimed to evaluate the load‐to‐failure and deflection of acrylic and 3D‐printed resins used in the cantilever region of implant‐supported provisional prostheses ...
Térsia Cristina Silva Macedo   +4 more
wiley   +1 more source

Constructing the perfect piston

open access: yes, 2011
CalculusThe blue line represents the outer boundary of the piston and the dashed lines represent the range of tolerances for the area. The diameter slider adjusts the size of the blue lines, indicative of the process a machinist goes though when ...
Fritz, Joshua   +2 more
core   +1 more source

Recent progress in high pressure metrology in Europe

open access: yesEPJ Web of Conferences, 2014
Five European national metrology institutes in collaboration with a university, a research institute and five industrial companies are working on a joint research project within a framework of the European Metrology Research Programme aimed at ...
Sabuga Wladimir   +2 more
doaj   +1 more source

Facilitating Feeling?: The Relationship between Memorials and Emotions

open access: yesSociological Inquiry, EarlyView.
This article explores if and how national memorials impact collective emotions among local residents, focusing on the National Memorial for Peace and Justice (NMPJ) in Montgomery, Alabama. This understudied question is of sociological importance given the change in federal policy regarding public memorials, particularly the removal of references to ...
Ashley V. Reichelmann, James E. Hawdon
wiley   +1 more source

Online Monitoring of Engine Oil Quality Based on AE Signal Analysis

open access: yes, 2010
This paper studies online condition monitoring of engine oil by analysing the acoustic emission (AE) signals. The AE signals were measured using an AE sensor mounted on the thrust side between second and third cylinders in a four cylinder diesel engine.
Gu, Fengshou   +2 more
core  

Isometric training at longer muscle–tendon complex lengths: A potential countermeasure to impaired neuro‐muscle–tendon function during space travel

open access: yesExperimental Physiology, EarlyView.
Abstract Manned space exploration to distant destinations, including Mars, continues to be an aspiration of humankind. Space travel does, however, present many challenges to the body, amongst which adaptation to microgravity is perhaps the largest. For instance, both short and long manned spaceflight missions have shown substantial deleterious effects ...
Gerard McMahon   +2 more
wiley   +1 more source

Thermal analysis of a ceramic coating diesel engine piston using 3-D finite element method

open access: yes, 2007
In this study, firstly, thermal analyses are investigated on a conventional (uncoated) diesel piston, made of aluminum silicon alloy and steel. Secondly, thermal analyses are performed on pistons, coated with MgO-ZrO2 material by means of using a ...
Büyükkaya, Ekrem, Cerit, Muhammet
core   +1 more source

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