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2. Hair matrix - Wikipedia

   en.wikipedia.org/wiki/Hair_matrix

   The hair matrix, or simply matrix, produces the actual hair shaft as well as the inner and outer root sheaths of hair. [1] References

3. Head & Shoulders - Wikipedia

   en.wikipedia.org/wiki/Head_&_Shoulders

   Head & Shoulders (H&S) is an American brand of anti-dandruff and non-dandruff shampoo produced by parent company Procter & Gamble. The active anti-fungal ingredient in Head & Shoulders is piroctone olamine [2] or zinc pyrithione, [3] with some "clinical strength" varieties also containing selenium disulfide. [2] [3]

4. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

5. Metal matrix composite - Wikipedia

   en.wikipedia.org/wiki/Metal_matrix_composite

   In materials science, a metal matrix composite (MMC) is a composite material with fibers or particles dispersed in a metallic matrix, such as copper, aluminum, or steel. The secondary phase is typically a ceramic (such as alumina or silicon carbide ) or another metal (such as steel [ 1 ] ).

6. Sodium dodecyl sulfate - Wikipedia

   en.wikipedia.org/wiki/Sodium_dodecyl_sulfate

   2 SO 3 + ROH → ROSO 2 −O−SO 3 H ROSO 2 −O−SO 3 H → ROSO 3 H + SO 3. Several million tons are produced annually. [2] SDS can also be synthesized by treating lauryl alcohol with chlorosulfuric acid. [24] The resulting half ester of sulfuric acid is then neutralized with alkali. Lauryl alcohol can be used in pure form or as a mixtures ...

7. Matrix exponential - Wikipedia

   en.wikipedia.org/wiki/Matrix_exponential

   For matrix-matrix exponentials, there is a distinction between the left exponential Y X and the right exponential X Y, because the multiplication operator for matrix-to-matrix is not commutative. Moreover, If X is normal and non-singular, then X Y and Y X have the same set of eigenvalues. If X is normal and non-singular, Y is normal, and XY ...