Results 51 to 60 of about 54,718 (284)

Bioprinting Organs—Science or Fiction?—A Review From Students to Students

open access: yesAdvanced Healthcare Materials, EarlyView.
Bioprinting artificial organs has the potential to revolutionize the medical field. This is a comprehensive review of the bioprinting workflow delving into the latest advancements in bioinks, materials and bioprinting techniques, exploring the critical stages of tissue maturation and functionality.
Nicoletta Murenu   +18 more
wiley   +1 more source

Piston Ring Projection and Catching in Cylinder Ports of Two-Stroke Cycle Engine

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2012
In a two-stroke cycle engine, the piston and its piston rings slide over the cylinder wall and its cylinder ports. This study investigates how those piston rings project and catch in cylinder ports, and examines the effects of engine speed and round ...
Kohei NAKASHIMA   +5 more
doaj   +1 more source

Solar engine [PDF]

open access: yes, 1982
A solar engine is disclosed in which a fluid, which is first heated and then cooled, forces a piston outward as the fluid is heated, and then draws the piston inward as the fluid is cooled. The piston is connected to a shaft and produces work as it moves
Jensen, R. N.
core   +1 more source

Tunicate‐Inspired Carboxymethyl Cellulose Hydrogel Filler for Treating Age‐Associated Vocal Fold Atrophy

open access: yesAdvanced Healthcare Materials, EarlyView.
The pyrogallol‐conjugated carboxymethylcellulose (CMC‐PG) hydrogel is applicated as a filler for the treatment of presbylaryngis, a vocal fold atrophy. CMC‐PG provides a bulking effect to the vocal folds. CMC‐PG is readily injectable and tissue adhesive, enabling sustained release of growth factor over long period.
Jihoon Jeon   +7 more
wiley   +1 more source

Piston Rings

open access: yesIzvestiya MGTU MAMI, 2013
The article describes the development of technology for the manufacture of steel piston rings by cold plastic deformation during drawing. It defines conditions of thermal treatment at recrystallisation tempering, thermofixation and thermostabilization.
G. A Okolovich, A. G Okolovich
openaire   +1 more source

Detection And Analysis Signal Energy Of Piston Ring Damages On Four Strokes Engine [PDF]

open access: yes, 2014
The purpose of this study is to develop the piston ring damage detection technique using vibration analysis. Vibration analysis was performed by measuring vibration in four stroke engine which were worn and scratched on its piston ring, then compare it ...
, Ir. Pramuko Ilmu Purboputro, MT.   +2 more
core  

Highly Tunable and Cell‐Remodelable Thiol‐ene Alginate‐Peptide Crosslinked Hydrogels to Recreate Cellular and Organoid Microenvironments for Biofabrication

open access: yesAdvanced Healthcare Materials, EarlyView.
Norbornene‐functionalized alginate is crosslinked with a di‐thiolated peptide sequence cleavable by cell‐secreted matrix metalloproteinases and decorated with cell‐adhesion peptides upon exposure to UV. Thyroid follicles, endometrial and intestinal organoids are encapsulated in a gentle manner with high cell viability and correct phenotype ...
Julia Fernández‐Pérez   +8 more
wiley   +1 more source

Tribological Properties of MoS2 Films on Piston Ring Surface under Dry Friction and Lean Oil Lubrication [PDF]

open access: yesCailiao Baohu
Diesel engines with large power, long stroke and high explosive pressure are the main power equipment for the fields of transportation, construction machinery, national defense equipment and nuclear emergency generators.
LI Nan, CHE Yinhui, WANG Mingchang
doaj   +1 more source

TEMPERATURE EFFECT IN MINIMUM OIL FILM THICKNESS MEASUREMENTS IN A SIMPLIFIED SINGLE-RING TEST RIG USED TO SIMULATE THE PISTON-CYLINDER ASSEMBLY [PDF]

open access: yesProceedings on Engineering Sciences, 2019
As part of the study of the complex lubrication phenomena between the piston-ring and the cylinder liner, it is important to characterize the oil film thickness in view of new designs that can be implemented for the piston-ring assembly.
Polychronis S. DELLIS
doaj   +1 more source

Thermohydrodynamic Lubrication Characteristics of Piston Rings in Diesel Engine Considering Transient Heat Transfer under the Parameterized Surface Texture of Cylinder Liners

open access: yesEnergies, 2023
The cylinder liner and piston ring form the most crucial friction pair in the diesel engine, contributing 35–40% of its overall friction losses. Recent research indicates that transient heat transfer significantly affects piston ring lubrication. However,
Hongyang Zhang   +5 more
doaj   +1 more source

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