Commands
10
Queries
65.80 ms
Query time
0
Failed Queries
| # | Time | Connection | Command |
|---|---|---|---|
| 1 | 0.42 ms | cache | CONNECT redis.internal 6379 5 <null> 5 5 |
| 2 | 2.30 ms | cache | SELECT 0 |
| 3 | 0.23 ms | cache | MGET wJo3GJ9dRH:data > anonymous-media > id=7044,locale=en,domain=www |
| 4 | 1.29 ms | cache | INFO Memory |
| 5 | 0.04 ms | cache | MULTI 2 |
| 6 | 0.20 ms | cache | SETEX wJo3GJ9dRH:data > anonymous-media > id=7044,locale=en,domain=www 2678398 �q�A �_ Oa:2:{i:0;s:13:"cache-service";i:1;s:36:"cache-service-data > anonymous-media";}a:15:{s:2:"id";i:952;s:5:"title";s:9:"Fuel cell";s:4:"slug";s:9:"fuel-cell";s:9:"mediaType";s:10:"simulation";s:14:"thumbnailSizes";a:3:{s:9:"node_pack";s:157:"https://www.preprod-yousg3q-etbsswybjvlic.fr-3.platformsh.site/media-cache/media_thumbnail_node_pack/uploads/media/thumbnails/952-6545f48909cb8084859499.webp";s:10:"suggestion";s:158:"https://www.preprod-yousg3q-etbsswybjvlic.fr-3.platformsh.site/media-cache/media_thumbnail_suggestion/uploads/media/thumbnails/952-6545f48909cb8084859499.webp";s:5:"title";s:153:"https://www.preprod-yousg3q-etbsswybjvlic.fr-3.platformsh.site/media-cache/media_thumbnail_title/uploads/media/thumbnails/952-6545f48909cb8084859499.webp";}s:19:"thumbnailBackground";s:7:"#b51d8e";s:11:"publishedAt";O:17:"DateTimeImmutable":3:{s:4:"date";s:26:"2020-03-17 00:00:00.000000";s:13:"timezone_type";i:3;s:8:"timezone";s:3:"UTC";}s:8:"isExpert";b:0;s:5:"goals";s:220:"<ul> <li>To illustrate the oxidation and reduction reactions.</li> <li>To discover the operating principle of the fuel cell.</li> <li>To teach the advantages and disadvantages of the hydrogen fuel cell.</li> </ul>";s:5:"width";i:550;s:6:"height";i:350;s:11:"description";s:1626:"<p>The fuel cell works as follows:</p> <ul> <li>On the anode side (-), an oxidation reaction takes electrons from a fuel.</li> <li>On the cathode side (+), a reduction reaction allows an oxidant to capture electrons.</li> <li>The electrons follow a separate path and deliver an exploitable current.</li> </ul> <p>There are several types of fuel (ethanol, methanol) but it is mainly dihydrogen that is used. This is known as a "hydrogen fuel cell". The oxidant is always the oxygen of the air (O<sub>2</sub>).</p> <p>The hydrogen fuel cell is considered a clean energy source. It consumes hydrogen and oxygen, two elements that are abundant on Earth. In addition, the production of electricity from such a battery only emits water (H<sub>2</sub>O). However, there are still some negative points that need to be resolved before considering scaling up:</p> <ul> <li>Platinum is used as a catalyst. It is a rare and polluting metal.</li> <li>As much as the hydrogen element (H) is abundant, so much the dihydrogen (H<sub>2</sub>) is not. It must therefore be produced upstream, for example by electrolysis. This production consumes energy. The energy gain of the hydrogen fuel cell is reduced accordingly.</li> <li>Once H<sub>2</sub> is produced, it must be transported and stored. Dihydrogen is "extremely flammable" (remember the Hindenburg accident) and it takes a lot of energy to compress it in the gaseous or liquid state (at -250 ° C).</li> </ul> <p>It remains a promising source of energy and many research projects are trying to solve or get around these problems.</p>";s:11:"suggestions";a:6:{i:0;a:9:{s:2:"id";i:825;s:5:"title";s:32:"Video: History of Transportation";s:4:"slug";s:31:"video-history-of-transportation";s:9:"mediaType";s:5:"video";s:14:"thumbnailSizes";a:3:{s:9:"node_pack";s:157:"https://www.preprod-yousg3q-etbsswybjvlic.fr-3.platformsh.site/media-cache/media_thumbnail_node_pack/uploads/media/thumbnails/825-6545f45470e8e161824453.webp";s:10:"suggestion";s:158:"https://www.preprod-yousg3q-etbsswybjvlic.fr-3.platformsh.site/media-cache/media_thumbnail_suggestion/uploads/media/thumbnails/825-6545f45470e8e161824453.webp";s:5:"title";s:153:"https://www.preprod-yousg3q-etbsswybjvlic.fr-3.platformsh.site/media-cache/media_thumbnail_title/uploads/media/thumbnails/825-6545f45470e8e161824453.webp";}s:19:"thumbnailBackground";s:7:"#b51d8e";s:11:"publishedAt";O:17:"DateTimeImmutable":3:{s:4:"date";s:26:"2015-06-05 00:00:00.000000";s:13:"timezone_type";i:3;s:8:"timezone";s:3:"UTC";}s:8:"isExpert";b:0;s:5:"goals";N;}i:1;a:9:{s:2:"id";i:57;s:5:"title";s:25:"Erosion and deforestation";s:4:"slug";s:25:"erosion-and-deforestation";s:9:"mediaType";s:10:"simulation";s:14:"thumbnailSizes";a:3:{s:9:"node_pack";s:156:"https://www.preprod-yousg3q-etbsswybjvlic.fr-3.platformsh.site/media-cache/media_thumbnail_node_pack/uploads/media/thumbnails/57-6545f3b6c6ce2672721279.webp";s:10:"suggestion";s:157:"https://www.preprod-yousg3q-etbsswybjvlic.fr-3.platformsh.site/media-cache/media_thumbnail_suggestion/uploads/media/thumbnails/57-6545f3b6c6ce2672721279.webp";s:5:"title";s:152:"https://www.preprod-yousg3q-etbsswybjvlic.fr-3.platformsh.site/media-cache/media_thumbnail_title/uploads/media/thumbnails/57-6545f3b6c6ce2672721279.webp";}s:19:"thumbnailBackground";s:7:"#f6951d";s:11:"publishedAt";O:17:"DateTimeImmutable":3:{s:4:"date";s:26:"2015-05-11 00:00:00.000000";s:13:"timezone_type";i:3;s:8:"timezone";s:3:"UTC";}s:8:"isExpert";b:0;s:5:"goals";s:214:"<ul> <li>To illustrate the link between deforestation and the erosion of soils.</li> <li>To understand the impact of deforestation on the environment (ecosystem, climate, landslides…..)</li> </ul>";}i:2;a:9:{s:2:"id";i:713;s:5:"title";s:21:"Electrolysis of water";s:4:"slug";s:21:"electrolysis-of-water";s:9:"mediaType";s:10:"simulation";s:14:"thumbnailSizes";a:3:{s:9:"node_pack";s:157:"https://www.preprod-yousg3q-etbsswybjvlic.fr-3.platformsh.site/media-cache/media_thumbnail_node_pack/uploads/media/thumbnails/713-6545f41e18511905554854.webp";s:10:"suggestion";s:158:"https://www.preprod-yousg3q-etbsswybjvlic.fr-3.platformsh.site/media-cache/media_thumbnail_suggestion/uploads/media/thumbnails/713-6545f41e18511905554854.webp";s:5:"title";s:153:"https://www.preprod-yousg3q-etbsswybjvlic.fr-3.platformsh.site/media-cache/media_thumbnail_title/uploads/media/thumbnails/713-6545f41e18511905554854.webp";}s:19:"thumbnailBackground";s:7:"#f487b9";s:11:"publishedAt";O:17:"DateTimeImmutable":3:{s:4:"date";s:26:"2015-05-11 00:00:00.000000";s:13:"timezone_type";i:3;s:8:"timezone";s:3:"UTC";}s:8:"isExpert";b:0;s:5:"goals";s:237:"<ul> <li>To describe an oxidation-reduction reaction.</li> <li>To define the following terms: electrolysis, electrolyte, anion, cation, anode, cathode, electric current</li> <li>To know how to read a net equation.</li> </ul>";}i:3;a:9:{s:2:"id";i:826;s:5:"title";s:18:"Video: Ecomobility";s:4:"slug";s:17:"video-ecomobility";s:9:"mediaType";s:5:"video";s:14:"thumbnailSizes";a:3:{s:9:"node_pack";s:157:"https://www.preprod-yousg3q-etbsswybjvlic.fr-3.platformsh.site/media-cache/media_thumbnail_node_pack/uploads/media/thumbnails/826-6545f454c8d49308736273.webp";s:10:"suggestion";s:158:"https://www.preprod-yousg3q-etbsswybjvlic.fr-3.platformsh.site/media-cache/media_thumbnail_suggestion/uploads/media/thumbnails/826-6545f454c8d49308736273.webp";s:5:"title";s:153:"https://www.preprod-yousg3q-etbsswybjvlic.fr-3.platformsh.site/media-cache/media_thumbnail_title/uploads/media/thumbnails/826-6545f454c8d49308736273.webp";}s:19:"thumbnailBackground";s:7:"#f25821";s:11:"publishedAt";O:17:"DateTimeImmutable":3:{s:4:"date";s:26:"2015-06-17 00:00:00.000000";s:13:"timezone_type";i:3;s:8:"timezone";s:3:"UTC";}s:8:"isExpert";b:0;s:5:"goals";N;}i:4;a:9:{s:2:"id";i:976;s:5:"title";s:9:"Watershed";s:4:"slug";s:9:"watershed";s:9:"mediaType";s:10:"simulation";s:14:"thumbnailSizes";a:3:{s:9:"node_pack";s:157:"https://www.preprod-yousg3q-etbsswybjvlic.fr-3.platformsh.site/media-cache/media_thumbnail_node_pack/uploads/media/thumbnails/976-6545f492985be646618409.webp";s:10:"suggestion";s:158:"https://www.preprod-yousg3q-etbsswybjvlic.fr-3.platformsh.site/media-cache/media_thumbnail_suggestion/uploads/media/thumbnails/976-6545f492985be646618409.webp";s:5:"title";s:153:"https://www.preprod-yousg3q-etbsswybjvlic.fr-3.platformsh.site/media-cache/media_thumbnail_title/uploads/media/thumbnails/976-6545f492985be646618409.webp";}s:19:"thumbnailBackground";s:7:"#ec008d";s:11:"publishedAt";O:17:"DateTimeImmutable":3:{s:4:"date";s:26:"2023-03-20 00:00:00.000000";s:13:"timezone_type";i:3;s:8:"timezone";s:3:"UTC";}s:8:"isExpert";b:0;s:5:"goals";s:249:"<ul> <li>To define what a watershed and a water divide line are.</li> <li>To explain the time lag between precipitation, flooding, and recession.</li> <li>To explain how land-use planning can limit or exacerbate the risk of floods.</li> </ul>";}i:5;a:9:{s:2:"id";i:659;s:5:"title";s:8:"Dilution";s:4:"slug";s:8:"dilution";s:9:"mediaType";s:10:"simulation";s:14:"thumbnailSizes";a:3:{s:9:"node_pack";s:157:"https://www.preprod-yousg3q-etbsswybjvlic.fr-3.platformsh.site/media-cache/media_thumbnail_node_pack/uploads/media/thumbnails/659-6545f3f447560672709451.webp";s:10:"suggestion";s:158:"https://www.preprod-yousg3q-etbsswybjvlic.fr-3.platformsh.site/media-cache/media_thumbnail_suggestion/uploads/media/thumbnails/659-6545f3f447560672709451.webp";s:5:"title";s:153:"https://www.preprod-yousg3q-etbsswybjvlic.fr-3.platformsh.site/media-cache/media_thumbnail_title/uploads/media/thumbnails/659-6545f3f447560672709451.webp";}s:19:"thumbnailBackground";s:7:"#f6951d";s:11:"publishedAt";O:17:"DateTimeImmutable":3:{s:4:"date";s:26:"2015-05-11 00:00:00.000000";s:13:"timezone_type";i:3;s:8:"timezone";s:3:"UTC";}s:8:"isExpert";b:0;s:5:"goals";s:253:"<ul> <li>To describe the list of materials needed to carry out the preparation of a solution.</li> <li>To illustrate each of the steps in carrying out a dilution.</li> <li>To know how to carry out the experimental protocol.</li> </ul>";}}s:4:"tags";a:7:{i:0;s:7:"battery";i:1;s:11:"electricity";i:2;s:11:"electrolyte";i:3;s:6:"energy";i:4;s:8:"hydrogen";i:5;s:9:"oxidation";i:6;s:9:"reduction";}s:12:"baseNodeName";s:33:"Environmental science and Ecology";} |
| 7 | 0.11 ms | cache | SADD wJo3GJ9dRH:tagscache-service wJo3GJ9dRH:data > anonymous-media > id=7044,locale=en,domain=www |
| 8 | 0.09 ms | cache | SADD wJo3GJ9dRH:tagscache-service-data > anonymous-media wJo3GJ9dRH:data > anonymous-media > id=7044,locale=en,domain=www |
| 9 | 20.10 ms | cache | EXEC |
| 10 | 41.04 ms | cache | MGET wJo3GJ9dRH:data > locale-page-groups > locale=en |