Sleeving an engine block: The pros and cons explained

To sleeve or to bore your engine block? That's the several-hundred-dollar question (maybe into the thousands) as you ...

Don't use soda to remove corrosion from your battery terminals – do this instead

You may have heard that Coca-Cola will clean corrosion from battery terminals. It will ... but it's still a bad idea. Here's why, and what to do instead.
SciELO

Versatile Applications of Cyanoacetic Acid in Organic Chemistry: Active Methylene Compound for the Knoevenagel Condensation and Organocatalyst for the Biginelli Reaction

The Knoevenagel and Biginelli reactions are very important protocols for organic chemistry. The Knoevenagel condensation is a type of aldol reaction widely used in the construction of new C–C bonds.