linear degradation
31Photovieillissement accéléré en SEPAP — SEPAP UN OUTIL POUR ÉVALUER LA DURÉE DE VIE DES MATIÈRES PLASTIQUES * 4 lampes à vapeur de mercure de 400Watts émettant intensément entre 290 et 450nm * Un contrôle de température de la surface de l échantillon entre 45 °C et 80  …
32Polyethylene terephthalate — PETE redirects here. For the first name, see Peter (disambiguation). For other uses, see Pete (disambiguation). Polyethylene terephthalate fibre IUPAC name …
33List of cutaneous conditions — This is an incomplete list, which may never be able to satisfy particular standards for completeness. You can help by expanding it with reliably sourced entries. See also: Cutaneous conditions, Category:Cutaneous conditions, and ICD 10… …
34Protein — Proteins are large organic compounds made of amino acids arranged in a linear chain and joined together by peptide bonds between the carboxyl and amino groups of adjacent amino acid residues. The sequence of amino acids in a protein is defined by …
35Phonograph cylinder — Two Edison cylinder records (on either end) and their cardboard storage cartons (center) Phonograph cylinders were the earliest commercial medium for recording and reproducing sound. Commonly known simply as records in their era of greatest… …
36Gene expression — For vocabulary, see Glossary of gene expression terms. For a non technical introduction to the topic, see Introduction to genetics. Genes are expressed by being transcribed into RNA, and this transcript may then be translated into protein. Gene… …
37Ecosystem ecology — Figure 1. A riparian forest in the White Mountains, New Hampshire (USA). Ecosystem ecology is the integrated study of biotic and abiotic components of ecosystems and their interactions within an ecosystem framework. This science examines how… …
38Waxy corn — (maize) was found in China in 1909. As this plant showed many peculiar traits, the American breeders long used it as a genetic marker to tag the existence of hidden genes in other maize breeding programs. In 1922 a researcher found that the… …
39river — river1 riverless, adj. riverlike, adj. /riv euhr/, n. 1. a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels. 2. a similar stream of something other than water: a… …
40Phonograph — Turntable redirects here. For other uses, see Turntable (disambiguation). Edison cylinder phonograph ca. 1899 …
