Results 61 to 70 of about 3,157 (237)

Direct numerical simulations of aeolian sand ripples

open access: yes, 2014
Aeolian sand beds exhibit regular patterns of ripples resulting from the interaction between topography and sediment transport. Their characteristics have been so far related to reptation transport caused by the impacts on the ground of grains entrained ...
Andreotti, Bruno   +2 more
core   +1 more source

Sticky Yet Slippery: Molecular Ordering Reconciles Bubble‐Surface Affinity With Ultralow Friction at the Nanoscale

open access: yesAdvanced Science, EarlyView.
By engineering the molecular order and thickness of PDMS layers, we reconcile the stickiness and slipperiness during bubble transport. AFM measurements and MD simulations further reveal how these nanoscale architectures tune hydrophobic interaction FHB and friction force f.
Shishuang Zhang   +7 more
wiley   +1 more source

Study of Lubricant Jet Flow Phenomena in Spur Gears: Out of Mesh Condition [PDF]

open access: yes
Oil jet lubrication on the disengaging side of a gear mesh was analyzed. Results of the analysis were computerized and used to determine the oil jet impingement depth for several gear ratios and oil jet to pitch line velocity ratios.
Akin, L. S., Townsend, D. P.
core   +1 more source

Evaluation of facilities performance on students’ satisfaction in Northern Nigerian Universities [PDF]

open access: yes, 2017
Performance evaluation of academic facilities of HEIs is very critical to educational effectiveness. Presently, there is limited or no research/data in Nigeria to assess how extensively the use of or lack of academic facilities benchmarking practices ...
Abdullahi, Isa
core  

A Piezo‐Mimetic Ionic Hydrogel Harnessing Joint Motion for Cartilage Repair

open access: yesAdvanced Science, EarlyView.
A piezo‐mimetic ionic hydrogel converts mechanical deformation into bioactive ionic currents via stress‐induced asymmetric ion migration. Coupled with sustained Mg2+ release, this mechano‐electrochemical platform bridges mechanical loading and cellular signaling, enabling load‐adaptive stimulation and enhanced cartilage regeneration. ABSTRACT Articular
Chenyuan Gao   +14 more
wiley   +1 more source

Concentric Rheostat Decoupled 3D Force‐Sensing Module for Smart Table Tennis Training

open access: yesAdvanced Intelligent Systems, EarlyView.
A 3D‐printed sensor array intrinsically decouples normal and shear forces through a unique concentric structural design. By integrating piezoresistive, sliding area‐varying capacitive, and concentric rheostat mechanisms, the 12‐sensor module achieves high‐resolution 3D force mapping without complex algorithms.
Zhe Liu   +7 more
wiley   +1 more source

Effect of lubricant jet location on spiral bevel gear operating temperatures [PDF]

open access: yes
An experimental study was conducted to determine the effect of lubricant jet location on spiral bevel gear bulk temperatures. Transient surface temperatures were also measured.
Handschuh, Robert F.
core   +1 more source

Clotrimazole‐loaded PLGA microparticles for local drug delivery to the vagina: Shape does matter

open access: yesAnimal Models and Experimental Medicine, EarlyView.
Clotrimazole‐loaded PLGA microparticles for intravaginal delivery. Abstract Background Intravaginal drug administration is the most promising strategy for treating vaginal infections to protect women's health, such as vulvovaginal candidiasis (VVC). However, conventional vaginal formulations in the clinic face challenges such as drug leakage and low ...
Yanyu Li   +8 more
wiley   +1 more source

Liposomal Delivery of L‐2‐Hydroxyglutarate for Targeting Epigenetic Dysregulation in Osteoarthritis

open access: yesAdvanced NanoBiomed Research, EarlyView.
Osteoarthritis involves cartilage degeneration, inflammation, and epigenetic dysregulation. A liposomal formulation of the TET1 inhibitor L‐2‐hydroxyglutarate to overcome rapid joint clearance was developed. The formulation showed good physicochemical properties, reduced inflammatory and catabolic gene expression in chondrocytes, and alleviated ...
Denise Murgia   +10 more
wiley   +1 more source

Analysis of splash lubrication cooling characteristics in urban rail transit train gearbox

open access: yesJixie chuandong
ObjectiveThe gear drive device of urban rail trains adopts splash lubrication method. To study the influence of lubrication and cooling characteristics on the transmission efficiency and service life of gearboxes under splash lubrication mode, reveal its
YANG Linjie   +4 more
doaj  

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