Results 61 to 70 of about 20,341 (264)

Early Endoscopic Repair of Traumatic Skull Base Dural Injuries: Challenging the Dogma of Conservative Management

open access: yesInternational Forum of Allergy &Rhinology, EarlyView.
ABSTRACT Introduction Traditional management of traumatic skull base dural injury has often favored observation and conservative therapy, despite the risk of delayed intracranial complications. This paradigm originated when operative intervention required craniotomy and carried significant morbidity.
Jessica W. Grayson   +9 more
wiley   +1 more source

Three-dimensional profile inspection method for bipolar plates based on line laser scanning

open access: yes四川大学学报. 自然科学版
As a key component of proton exchange membrane (PEM) electrolyzers, bipolar plates play a decisive role in collecting and conducting hydrogen/oxygen,thereby ensuring the safe and reliable operation of the overall system.
XIAO Yuhang   +8 more
doaj  

Numerical model for non-penetrating laser welding of bipolar plates based on BP neural network

open access: yesHanjie xuebao
Laser welding technology has significant advantages in the precision machining and mass production of metal bipolar plates for fuel cells due to its characteristics of high precision and high efficiency.
Wei LI   +4 more
doaj   +1 more source

Enhanced performance of Ti–Nb–N film modified 316L stainless steel and Ti bipolar plates for proton exchange membrane water electrolyser

open access: yesJournal of Materials Research and Technology
Proton exchange membrane water electrolyser (PEMWE) is crucial for contemporary hydrogen generation technology. However, the corrosion of bipolar plates (BPPs) poses a significant challenge primarily due to the high anodic potential and acidic ...
Zhongxiu Yu   +6 more
doaj   +1 more source

Evaluating the Effect of Metal Bipolar Plate Coating on the Performance of Proton Exchange Membrane Fuel Cells

open access: yesEnergies, 2018
Environmental concerns of greenhouse gases (GHG) effect from fossil commodities and the fast increase in global energy demand have created awareness on the need to replace fossil fuels with other sources of clean energy.
Oluwatosin Ijaodola   +7 more
doaj   +1 more source

A Fixed‐Charge Interphase Synchronizes Ion Transport to Suppress Space‐Charge‐Driven Inefficiency Under Nanoliter Confinement

open access: yesAngewandte Chemie International Edition, EarlyView.
Electrochemical energy storage breaks down under extreme miniaturization, where interfaces and space‐charge dominate device behavior. This work introduces a fixed‐charge selective interphase (FCSI) integrated into a twin‐tube micro‐Swiss‐roll architecture.
Yaping Yan   +12 more
wiley   +1 more source

Manufacturing of Metallic Bipolar Plate Channels by Rolling

open access: yesJournal of Manufacturing and Materials Processing, 2019
Producing metallic bipolar plates for Proton Exchange Membrane (PEM) fuel cells by forming is still a topic of research. So far, it has mainly been applied for small batches, but it offers substantial advantages regarding both costs and installation ...
Alexander Bauer   +2 more
doaj   +1 more source

Integrating whole‐bone and regional analyses to understand human scapular growth

open access: yesThe Anatomical Record, EarlyView.
Abstract This study investigates ontogenetic changes in human scapular morphology using three‐dimensional geometric morphometrics with whole‐bone and region‐specific analyses. The aim is to evaluate whether the scapula follows a regular developmental pattern and whether its functionally distinct components, the scapular spine (SS) and glenoid fossa ...
Azahara Salazar‐Fernández   +3 more
wiley   +1 more source

Magnetron-Sputtered Amorphous Carbon Films for Aluminium Proton-Exchange-Membrane Fuel Cell Bipolar Plates

open access: yesPhyschem
Aluminium is an attractive material for proton-exchange-membrane fuel cell bipolar plates as it has a much lower density than steel and is easier to form than both steel and graphite.
Parnia Navabpour   +4 more
doaj   +1 more source

Hyperostosis frontalis interna: Observed patterns, prevalence, and dementia associations in older adults

open access: yesThe Anatomical Record, EarlyView.
Abstract Hyperostosis frontalis interna (HFI) is a frequently underrecognized condition characterized by overgrowth of the frontal endocranium, most commonly observed in post‐menopausal women. Although its etiology remains unclear, hormonal influences and a possible relationship with neurocognitive changes have been proposed.
Danielle Felsberg   +5 more
wiley   +1 more source

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