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2. Proactiv - Wikipedia

   en.wikipedia.org/wiki/Proactiv

   Proactiv is an American brand of skin-care products developed by two American dermatologists, Katie Rodan and Kathy A. Fields, and launched in 1995 by Guthy-Renker, a California-based direct marketing company, that was endorsed by famous celebrities [2] The range includes moisturizers, body washes and treatment products, but the brand is known for its three-step anti-acne Solutions 3-step ...

3. Proactivity - Wikipedia

   en.wikipedia.org/wiki/Proactivity

   Proactivity. Proactivity or proactive behavior refers to self-initiated behavior that endeavours to solve a problem before it has occurred. [ 1] Proactive behavior involves acting in advance of a future situation, rather than reacting. It refers to taking control of a situation and making early changes, rather than adjusting to a situation or ...

4. Piranha solution - Wikipedia

   en.wikipedia.org/wiki/Piranha_solution

   Piranha solution, also known as piranha etch, is a mixture of sulfuric acid ( H2SO4) and hydrogen peroxide ( H2O2 ). The resulting mixture is used to clean organic residues off substrates, for example silicon wafers. [ 1] Because the mixture is a strong oxidizing agent, it will decompose most organic matter, and it will also hydroxylate most ...

5. Strengthening mechanisms of materials - Wikipedia

   en.wikipedia.org/wiki/Strengthening_mechanisms...

   High-strength steels generally fall into three basic categories, classified by the strengthening mechanism employed. 1- solid-solution-strengthened steels (rephos steels) 2- grain-refined steels or high strength low alloy steels (HSLA) 3- transformation-hardened steels Transformation-hardened steels are the third type of high-strength steels.

6. Stability constants of complexes - Wikipedia

   en.wikipedia.org/wiki/Stability_constants_of...

   Stability constants of complexes. In coordination chemistry, a stability constant (also called formation constant or binding constant) is an equilibrium constant for the formation of a complex in solution. It is a measure of the strength of the interaction between the reagents that come together to form the complex.

7. Solid solution strengthening - Wikipedia

   en.wikipedia.org/wiki/Solid_solution_strengthening

   Solid solution strengthening. In metallurgy, solid solution strengthening is a type of alloying that can be used to improve the strength of a pure metal. [1] The technique works by adding atoms of one element (the alloying element) to the crystalline lattice of another element (the base metal), forming a solid solution.