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Scientist performing MTT assay in a cell biology laboratory for assessing cell viability.

MTT Assay for Measuring Cell Viability

The MTT assay is a colorimetric method for assessing cell metabolic activity, which serves as a proxy for cell viability, proliferation, and cytotoxicity. Viable cells

Artisans engaged in upcycling processes, transforming waste materials into valuable products.

Upcycling

The term ‘upcycling’ was first coined in 1994 by German engineer Reiner Pilz in an interview with journalist Thornton Kay. Pilz contrasted it with ‘down-cycling,’

Lead-acid battery with lead anode and lead dioxide cathode in a historical lab setting.

Lead-Acid Battery Chemistry

The first commercially successful rechargeable battery. It uses a lead (Pb) anode, a lead dioxide (PbO₂) cathode, and a sulfuric acid (H₂SO₄) electrolyte. During discharge,

Research laboratory analyzing single p-n junction solar cell efficiency based on Shockley–Queisser Limit.

Shockley–Queisser Limit

The Shockley–Queisser limit is the maximum theoretical efficiency for a single p-n junction solar cell. It considers only radiative recombination and black-body radiation losses. For

Five Platonic solids: tetrahedron, cube, octahedron, dodecahedron, icosahedron in geometry.

The Five Platonic Solids

The Platonic solids are the only five convex regular polyhedra: a regular polyhedron has congruent regular polygonal faces and the same number of faces meeting

Team collaboration in Six Sigma project meeting focused on process improvement.

Six Sigma Methodology

Six Sigma is a disciplined, data-driven methodology for eliminating defects in any process – from manufacturing to transactional and from product to service. The statistical

Astronomical observatory with telescope, illustrating perihelion precession in relativity.

Perihelion Precession of Mercury

General relativity provided the first accurate explanation for the anomalous precession of Mercury’s perihelion. Newtonian gravity could not fully account for the slow, gradual shift

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