Results 31 to 40 of about 2,938 (191)

Experimental Investigation of a Highly Loaded Half-Journal Bearing

Lubricants
A dedicated experimental rig is presented for a half-journal bearing operating under highly loaded, well-controlled hydrodynamic lubrication conditions relevant to turbomachinery.
James Layton, Humberto Medina, Hasna Fadhila, Benjamin C. Rothwell, Stephen Ambrose, Katrina Farbrother, Carol Eastwick   +6 more
doaj   +1 more source

Multi-objective analysis design of spiral groove conical bearing considering cavitation effects

Results in Engineering, 2022
As the element of rotary motion, the evaluation of hydrodynamic behavior for spiral groove conical bearing (SGCB) is related with the stability of multibody systems and the influence of cavitation on the lubrication performance of SGCB is an important ...
Yu Chen, Xiaofang Shi, Xiuying Wang, Hongchang Wang, Chengtao Yu, Yu Sun   +5 more
doaj   +1 more source

Dual‐Dynamically Crosslinked Nanogels Enable Prolonged Ocular Retention for Multimodal Dry Eye Therapy

Advanced Science, EarlyView.
This berberine‐loaded dual‐dynamically crosslinked nanogel integrates tannic acid‐zinc metal‐phenolic networks and carboxymethyl chitosan/aldehyde‐functionalized poly(ethylene glycol) dynamic Schiff base networks, achieving 1‐year colloidal and antioxidant stability, sustained corneal berberine exposure for 24 h to support convenient once‐daily dosing,
Yanru Xin, Sisi Chen, Shengli Huang, Mengqi Huang, Jingyan Zhu, Zijian Wang, Jianliang Shen, Qinxiang Zheng   +7 more
wiley   +1 more source

Characterizing Biopolymer Electrolytes in Zinc–Air Batteries: Challenges, Best Practices, and a Robust Workflow Guiding Future Research Paths

Advanced Energy Materials, EarlyView.
Bio‐based gel polymer electrolytes promise sustainable, mechanically adaptable zinc–air batteries, yet their progress is constrained by inconsistent characterization. This review critically links formulation, structure, interfaces, and cell performance, identifies methodological gaps under alkaline operating conditions, and proposes application ...
Matteo Milanesi, Hiba Ali, Barbara Belza, Mattia F. Palermo, Claudio Gerbaldi, Giuseppe Antonio Elia, Nagore Ortiz‐Vitoriano   +6 more
wiley   +1 more source

Identifying the optimal interfacial parameter correlated with hydrodynamic lubrication

Friction, 2016
The effects of boundary (liquid/solid) slip on hydrodynamics are well recognized. However, it is extremely difficult to quantify in-situ boundary slip in a lubrication contact.
Liang Guo, Patrick Wong, Feng Guo
doaj   +1 more source

The Role of Lubrication Mechanisms in the Knee Synovial Joints

مجلة النهرين للعلوم الهندسية, 2008
Synovial joints form the most important feature of the human body as they represent the centers of the most essential and basic activity in the human beings, which is motion.
Aseel Mohammed Ali, Albert E. Yousif
doaj  

Tribological and Sealing Performance of Squamous Textured Mechanical Sealing Faces: Experimental and Theoretical Analysis

Lubricants
Mechanical seal faces frequently operate under harsh and dynamic conditions, where maintaining stable and efficient lubrication remains a critical challenge.
Xianghua Zhan, Na Zhang, Zhentao Li, Xiaoying Li, Dengke Chen, Yancong Liu   +5 more
doaj   +1 more source

Alkali‐Catalyzed Synthesis of Acylglycerol Estolides Exclusively from Castor Oil

Journal of the American Oil Chemists' Society, EarlyView.
This work advances sustainable chemistry by converting renewable castor oil into high‐performance estolides via solvent‐free, low‐energy catalysis. ABSTRACT Estolides are oligomers composed of fatty acid (FA) monomers linked through secondary ester bonds located along the mid‐chain region.
Lucas Natã de Melo, Simoni Margareti Plentz Meneghetti, Mario Roberto Meneghetti, Janaína Heberle Bortoluzzi   +3 more
wiley   +1 more source

Investigation of Microflow Effects in Textures on Hydrodynamic Performance of Journal Bearings Using CFD Simulations

Lubricants, 2023
Adequately designed and positioned surface textures are recognized as a promising way to increase load-carrying capacity and reduce frictional losses of journal bearings.
Yujun Wang, Georg Jacobs, Florian König, Shuo Zhang, Stephan von Goeldel   +4 more
doaj   +1 more source

Morphological description of the oropharyngeal cavity of Kinosternon scorpioides scorpioides (Linnaeus, 1766), (Testudines: Kinosternidae)

The Anatomical Record, EarlyView.
Gross morphology, Light Microscopy and Scanning Electron Microscopy revealed the structural organization of the oropharyngeal cavity of Kinosternon scorpioides scorpioides, characterized by mucous epithelium, epithelial pores, and developed lingual papillae.
Andréa Magalhães Bezerra, Diego Ferreira de Sousa, Luane Botelho, André Luís Nogueira Lima, Érika Branco, Elane Guerreiro Giese, Washington Luís Pereira, Ana Rita de Lima   +7 more
wiley   +1 more source