Results 41 to 50 of about 29,708 (266)

Analysis of force and impulse of a hydrophobic rod rotating into water

Micro and Nano Systems Letters, 2019
This paper investigates the change of the relative magnitudes of force and impulse components generated by the rotational motion of a hydrophobic carbon rod moving into water from the water surface, by varying the rod length. Whereas added mass force and
Sun Gi Park, Min Chul Lee, Hyeong Jun Tak, Jong Soo Ko   +3 more
doaj   +1 more source

Drag Reduction Using Passive Methods on KIA PRIDE Car Model

Journal of Engineering, 2020
An experimental study on a KIA pride (SAIPA 131) car model with scale of 1:14 in the wind tunnel was made beside the real car tests. Some of the modifications to passive flow control which are (vortex generator, spoiler and slice diffuser) were added to ...
Zahraa Mahdi Saleh, Anmar Hamid Ali, Mustafa Sabeeh Abood   +2 more
doaj   +1 more source

Electrospun Wood‐Derived Biopolymers as Electrodes in Electrochemical Energy Storage Technologies

Advanced Functional Materials, EarlyView.
Electrospinning transforms wood‐derived cellulose and lignin into architecturally defined, binder‐free carbon electrodes with tuneable porosity and functionality. This review shows how fibre design enables decoupled charge and mass transport, enhancing performance across battery systems, while identifying key challenges in spinnability, scalability ...
Michael W. Thielke, Hattie R. Chisnall, Jesus Vazquez Chavez, Ana B. Jorge Sobrido   +3 more
wiley   +1 more source

Evaluation of Drag Force for Selected .223 Rem Projectiles Across Different Flight Regimes

Technologies
This paper presents a study in the field of external ballistics focusing on the drag force of selected .223 rem projectiles. The drag force characteristics of projectiles with different geometric features were compared, including variations in projectile
Pavel Šafl, Jiří Maxa, Pavla Šabacká, Zdeněk Novotný, Robert Bayer, Tomáš Binar, Petr Bača, Jana Švecová, Jaroslav Talár, Robert Kutil   +9 more
doaj   +1 more source

Structural fatigue assessment of a fixed mono-pile platform

Advances in Mechanical Engineering, 2016
Fatigue assessment of fixed offshore platforms is essentially important to ensure their structural safety. Because of the small-scale leg diameter, these structures are often drag dominated, and linearized wave force is often utilized for the fatigue ...
Shuqing Wang, Xiancang Song, Weichen Ding, Junfeng Du   +3 more
doaj   +1 more source

Bio‐Inspired Artificial Ionic Mechanoreceptor

Advanced Functional Materials, EarlyView.
A skin‐inspired artificial mechanoreceptor based on ionic interactions is presented for biomimetic tactile sensing. Pressure‐driven ionic redistribution within microfluidic channels generates a self‐powered electrical signal without external bias. The generated waveform exhibits mechanoreceptor‐like temporal features, including overshoot and undershoot,
Mohammad Akbari, Jeppe Don, Lasse A. N. Pedersen, John Noee, Rassoul Tabassian   +4 more
wiley   +1 more source

Influences of Excitation Force Forms of the Hydraulic Oscillator on Drag Reduction Efficiency

Shiyou jixie, 2023
The excitation force forms of the hydraulic oscillator have been rarely reported.Considering the nonlinear effect of frictional forces, a dynamics model of the drill string equipped with the hydraulic oscillator was built by introducing the initial ...
Shi Xiaolei, Huang Wenjun, Gao Deli
doaj  

An Epigenetic Fate Converter Based on Nuclei‐Targeting Lipid Nanoparticles Drives Neuronal Programming of Stem Cells for Spinal Cord Repair

Advanced Functional Materials, EarlyView.
Schematic illustration of LNP‐MPG nuclei‐targeting delivery of HMW‐FGF2 promoting histone acetylation to regulate the fate of DPSCs and treat spinal cord injury. LNPs components include pHMW‐FGF2 plasmid, DSPC, Dlin‐MC3‐DMA, cholesterol, and PEG2000, and are modified with MPG to form HMW‐FGF2@LNP‐MPG (HLM). HLM nuclei‐targets DPSCs to deliver HMW‐FGF2,
Heng Zhou, Qiang Qin, Xiqin Li, Hanyu Ding, Chun Xu, Yan He, Qingsong Ye   +6 more
wiley   +1 more source

Mean Drag Force of Flexible Riser Under Bidirectionally Sheared Flow

Shanghai Jiaotong Daxue xuebao
There exists a special bidirectionally sheared flow field due to solitons in the South China Sea. An experimental study of the mean drag force of a flexible riser undergoing vortex-induced vibration under bidirectionally sheared flow is conducted.
FU Xuepeng, FU Shixiao, ZHANG Mengmeng, XU Yuwang, REN Haojie, SUN Tongxiao
doaj   +1 more source

Biodegradable 3D‐Printable and Coatable Antifouling Composites for Marine Applications

Advanced Functional Materials, EarlyView.
Marine biofouling damages submerged surfaces and raises greenhouse gas emissions. Biodegradable antifouling biocomposites were developed by hot‐mixing beeswax, Tween 80, and calcium stearate or stearic acid. Adjusting the component ratio enables processing via hot‐pressing, 3D‐printing, or dip‐coating.
Gabriele Corigliano, Lorenzo Ravelli, Martina Nardi, Ruowen Tu, Elena Bellini, Valerio Isa, Carlo Filippeschi, Roberta Finazzi, Luca Ceseracciu, Niloofar Paknezhad, Vincenzo Scribano, Paolo Galli, Silvia Lavorano, Simone Montano, Barbara Mazzolai, Marco Contardi, Pietro Cataldi, Athanassia Athanassiou   +17 more
wiley   +1 more source