Results 51 to 60 of about 2,782 (186)

Effect of Zinc Oxide Nanoparticles From Infant Formula Milk Powder on Colon Cells In Vitro

Journal of Applied Toxicology, EarlyView.
ABSTRACT Zinc is an essential trace element that participates in numerous metabolic processes; however, excessive exposure may interfere with the absorption of other metals, such as copper. In recent years, nanotechnology has experienced rapid growth, and zinc oxide nanoparticles (ZnO NPs) have garnered significant attention due to their versatile ...
Gloria Salinas‐Lucero, Karla Juarez‐Moreno, Rafael Vazquez‐Duhalt   +2 more
wiley   +1 more source

Numerical Simulation of the Lubrication Performance of the Stator and Rotor Friction Pair Surface Rhombus-like Texture in Screw Pumps

Lubricants
To address wear failure in screw pump stator and rotor friction pairs, this study constructed a numerical model of a rhombus-like micro-dimple texture on friction pair surfaces based on the scale structure of rhombus rattlesnakes.
Xiangzhi Shi, Xinfu Liu, Chunhua Liu, Zhongxian Hao, Shouzhi Huang, Yi Sun, Xinglong Niu   +6 more
doaj   +1 more source

CFD analysis of partial slip effect on the performance of hydrodynamic lubricated journal bearings

MATEC Web of Conferences, 2018
Slip modification of the lubricated bearing such hydrophobic coating has proven to improve the hydrodynamic performance. The present paper investigates the effect of partial slip on the journal bearing performance using computational fluid dynamic (CFD ...
Muchammad, Yunianto Bambang, Tauviqirrahman Mohammad, Wicaksono Widhi Ahmad, Jamari   +4 more
doaj   +1 more source

Gait alterations increase friction of degenerated articular cartilage: A tribological study

Knee Surgery, Sports Traumatology, Arthroscopy, EarlyView.
Abstract Purpose To investigate the effect of gait alterations associated with osteoarthritis (OA) on the frictional properties of porcine articular cartilage (AC) in intact and degenerative conditions. Methods Forty‐eight cylindrical AC samples were harvested from 12 porcine femur condyles and equally divided between four groups with n = 12 samples ...
Luisa de Roy, Graciosa Quelhas Teixeira, Maria Ahrens, Benjamin Mayer, Cornelia Horsch, Anita Ignatius, Andreas Martin Seitz   +6 more
wiley   +1 more source

Static and Dynamic Analysis of Porous Gas Bearings Lubricated With Air, Refrigerant R‐134a, Helium and Hydrogen

Lubrication Science, EarlyView.
ABSTRACT Porous gas bearings (PGBs) enable high‐speed, oil‐free operation in modern rotating machinery. This study develops a coupled thermo‐hydrodynamic (THD) model for a cylindrical porous gas bearing lubricated with four working fluids—air, R‐134a, helium and hydrogen.
S. Bechiri, B. Bouchehit, B. Bou‐Saïd
wiley   +1 more source

EEMD-TFMST-Based Vibration Feature Identification and Performance Analysis of Water-Lubricated Stern Bearings Under Long-Term Service Conditions

Lubricants
Under long-term service conditions, vibration signals of water-lubricated stern bearings exhibit strong nonlinearity, nonstationarity, and multicomponent coupling, which makes accurate feature extraction challenging.
Xinyi Liu, Qilin Liu, Gao Wan, Yong Jin, Wu Ouyang   +4 more
doaj   +1 more source

Sustainable Composites From Almond Shell Powder and Recycled Polyolefin Blends: Effect of Compatibilizer on Interfacial Adhesion and Properties

Polymer Composites, EarlyView.
Schematic illustration of sustainable recycled polyolefin/almond shell composites showing the effect of MA‐g‐PP compatibilizer on interfacial adhesion, void reduction, and composite morphology for lightweight automotive applications. ABSTRACT This study reports injection‐molded sustainable composites developed from a hybrid recycled polymer matrix ...
Rebecca Sanchez, Suman Kumar Ghosh, Nur Fazreen Alias, Amar K. Mohanty, Manjusri Misra   +4 more
wiley   +1 more source

Experimental Study on Fine Sediment Infiltration (FSI) Processes in Different Gravel Mixtures

River Research and Applications, EarlyView.
ABSTRACT Fine sediment infiltration (FSI) can lead to riverbed clogging, thereby degrading important habitats for aquatic biota in the hyporheic interstitial zone of gravel‐bed rivers (e.g., by reducing oxygen availability). This stress on rivers may increase from anthropogenic influences and can be counteracted by artificial gravel augmentation to ...
Michael Paster, Gábor Fleit, Helmut Habersack, Christoph Hauer   +3 more
wiley   +1 more source

Mammalian Osteoderm Ultrastructure in the Armored Acomys Spiny Mouse Tail

Small, EarlyView.
The ultrastructure of armored platelets – termed osteoderms – in the tail skin of Acomys cahirinus spiny mice is characterized using 2D and 3D microscopy methods. The imbricated structure is composed of calcium phosphate biomineral and has select structural elements that are bone‐like and tooth‐like in nature.
Joseph Deering, Malcolm Maden, Marc D. McKee   +2 more
wiley   +1 more source

Europium‐ and dysprosium‐modified strontium aluminate: A luminescent marker system for enhanced gunshot residue detection

Journal of Forensic Sciences, EarlyView.
Abstract Forensic ballistics is essential in analyzing evidence from firearm use in criminal investigations, with gunshot residue (GSR) detection providing key information about the firearm and shooting conditions. Traditional methods like spectroscopy and scanning electron microscopy (SEM) have limitations in sensitivity, cost, and accessibility ...
Paulo Tonin, Cesar Aguzzoli, Sidnei Moura   +2 more
wiley   +1 more source