These mesopores played a major role in oxidation reactions and improved the electrochemical performance. Using the rotating ring disk electrode method, they discovered that macropores also allowed a ...

In a mixed electrolyte of 1 mol L-1 KOH and 0.1 mol L-1 glycerol, the onset potential of the electrode dropped to 1.16 V RHE, significantly outperforming OER. Rotating ring-disk electrode (RRDE) ...

The idea is to pass a small spool of magnet wire through the toroid’s core while simultaneously rotating the toroid ... That obviously requires a winding ring that can be opened up to allow ...

When it's a ramjet that uses rotating detonation technology to propel aircraft at hypersonic speeds. A case in point is Venus Aerospace's new Venus Detonation Ramjet 2000 lb Thrust Engine (VDR2).

A hard disk comprises one or more aluminum or glass platters, coated with a ferromagnetic material. Although the terms "hard disk" and "hard drive" are used synonymously; technically, the disk ...

The Ring of Fire is home to 75% of the world's volcanoes and 90% of its earthquakes. 2 min read The Ring of Fire is a roughly 25,000-mile chain of volcanoes and seismically active sites that ...

This tutorial will show you how to take a disk drive Offline or bring a disk Online in a Windows 11/10 computer. Once a disk becomes offline, it will remain inaccessible and can’t be mountable.

The Oura Ring 4 builds in major upgrades spec for spec from the Oura Ring Generation 3. In its slimmest design to date, it comes in a streamlined titanium build and trims its interior recessed ...

Like its predecessor, the Oura Ring 4 offers users a subtle, passive health-tracking experience with a device that blends into their daily lives by mimicking traditional jewelry. The new model ...

4. Along the bottom, you'll see an icon that looks like a box with arrows that mimic a rotating motion. Tap this icon to crop your photo and open the rotation function. Once you have the rotation ...