ES
Volver a Research
YouTube
Elsevier
Create a free website with Framer, the website builder loved by startups, designers and agencies.
![](data:image/svg+xml,<svg display="block" role="presentation" viewBox="0 0 50 50" xmlns="http://www.w3.org/2000/svg"><g d="M 25 0 C 26.267 0 27.513 0.094 28.729 0.276 C 31.293 0.659 32.576 0.851 33.788 2.258 C 35 3.664 35 5.317 35 8.623 L 35 41.376 C 35 44.682 35 46.335 33.788 47.742 C 32.576 49.148 31.294 49.34 28.73 49.724 C 27.513 49.906 26.267 50 25 50 C 23.733 50 22.487 49.906 21.27 49.724 C 18.706 49.34 17.424 49.148 16.212 47.742 C 15 46.335 15 44.682 15 41.376 L 15 8.623 C 15 5.317 15 3.664 16.212 2.258 C 17.424 0.851 18.707 0.659 21.271 0.276 C 22.487 0.094 23.733 0 25 0 Z M 11 42.552 C 11 43.898 9.51 44.67 8.5 43.782 C 7.567 42.941 7.016 41.519 7 40.263 L 7 9.727 C 7.015 8.471 7.72 6.925 8.653 6.084 C 9.663 5.195 11 6.102 11 7.447 Z M 39 7.447 C 39 6.102 40.49 5.329 41.5 6.218 C 42.433 7.059 42.984 8.481 43 9.737 C 43 9.71 43 9.768 43 9.737 L 43 40.263 C 42.984 41.519 42.433 42.941 41.5 43.782 C 40.49 44.67 39 43.898 39 42.552 Z M 3 30.558 C 3 32.221 1.122 32.614 0.725 31 C 0.484 30.021 0.3 29.02 0.178 28 C 0.06 27.016 0 26.015 0 25 C 0 23.985 0.06 22.984 0.178 22 C 0.3 20.98 0.484 19.979 0.725 19 C 1.122 17.386 3 17.779 3 19.442 Z M 47 19.442 C 47 17.779 48.878 17.386 49.275 19 C 49.516 19.979 49.7 20.98 49.822 22 C 49.94 22.984 50 23.985 50 25 C 50 26.015 49.94 27.016 49.822 28 C 49.7 29.02 49.516 30.021 49.275 31 C 48.878 32.614 47 32.221 47 30.558 Z" fill="transparent" height="50px" id="ptFS_5mUT" width="50px"><path d="M 10 0 C 11.267 0 12.513 0.094 13.729 0.276 C 16.293 0.659 17.576 0.851 18.788 2.258 C 20 3.664 20 5.317 20 8.623 L 20 41.376 C 20 44.682 20 46.335 18.788 47.742 C 17.576 49.148 16.294 49.34 13.73 49.724 C 12.513 49.906 11.267 50 10 50 C 8.733 50 7.487 49.906 6.27 49.724 C 3.706 49.34 2.424 49.148 1.212 47.742 C 0 46.335 0 44.682 0 41.376 L 0 8.623 C 0 5.317 0 3.664 1.212 2.258 C 2.424 0.851 3.707 0.659 6.271 0.276 C 7.487 0.094 8.733 0 10 0 Z" fill="rgb(255, 0, 0)" height="50px" id="IRbLWyqVN" transform="translate(15 0)" width="20px"/><path d="M 4 36.823 C 4 38.168 2.51 38.941 1.5 38.052 C 0.567 37.212 0.016 35.789 0 34.534 L 0 3.997 C 0.015 2.741 0.72 1.195 1.653 0.354 C 2.663 -0.534 4 0.372 4 1.717 Z" fill="rgb(255, 0, 0)" height="38.43276939795944px" id="mNRjCD6L5" transform="translate(7 5.73)" width="4px"/><path d="M 0 1.61 C 0 0.265 1.49 -0.508 2.5 0.381 C 3.433 1.222 3.984 2.644 4 3.9 C 4 3.873 4 3.931 4 3.9 L 4 34.426 C 3.984 35.682 3.433 37.104 2.5 37.945 C 1.49 38.833 0 38.06 0 36.715 Z" fill="rgb(255, 0, 0)" height="38.325321298496235px" id="BlHFL_AC1" transform="translate(39 5.837)" width="3.9997777777777515px"/><path d="M 3 12.586 C 3 14.248 1.122 14.642 0.725 13.028 C 0.484 12.049 0.3 11.048 0.178 10.028 C 0.06 9.044 0 8.043 0 7.028 C 0 6.013 0.06 5.011 0.178 4.028 C 0.3 3.008 0.484 2.006 0.725 1.028 C 1.122 -0.587 3 -0.193 3 1.47 Z" fill="rgb(255, 0, 0)" height="14.055313120728165px" id="Hnn1zfE6O" transform="translate(0 17.972)" width="3px"/><path d="M 0 1.47 C 0 -0.193 1.878 -0.587 2.275 1.028 C 2.516 2.006 2.7 3.008 2.822 4.028 C 2.94 5.011 3 6.013 3 7.028 C 3 8.043 2.94 9.044 2.822 10.028 C 2.7 11.048 2.516 12.049 2.275 13.028 C 1.878 14.642 0 14.248 0 12.586 Z" fill="rgb(255, 0, 0)" height="14.055304811643886px" id="gPKyD9eBe" transform="translate(47 17.972)" width="3px"/></g></svg>)