{"id":17240,"date":"2013-04-23T12:41:20","date_gmt":"2013-04-23T10:41:20","guid":{"rendered":"https:\/\/ocasapiens-dweb.blogautore.repubblica.it\/?p=17240"},"modified":"2021-09-24T22:47:47","modified_gmt":"2021-09-24T20:47:47","slug":"patchwork","status":"publish","type":"post","link":"https:\/\/archivio.ocasapiens.org\/index.php\/2013\/04\/23\/patchwork\/","title":{"rendered":"Patchwork"},"content":{"rendered":"<p style=\"text-align: left;\"><span style=\"font-size: 13px; line-height: 19px;\">Avvertenza: ci si prova da <a href=\"http:\/\/www.cell.com\/trends\/biotechnology\/abstract\/S0167-7799(12)00112-6\" target=\"_blank\" rel=\"noopener\"><strong>vent&#8217;anni<\/strong><\/a>, per ora miracoli niente. <\/span><\/p>\n<p style=\"text-align: left;\"><span style=\"font-size: 13px; line-height: 19px;\">Sui\u00a0<em>PNAS<\/em>, il gruppo di Stephen Aves e John Love &#8211; univ. di Exeter &#8211; <a href=\"http:\/\/www.pnas.org\/content\/early\/2013\/04\/17\/1215966110\" target=\"_blank\" rel=\"noopener\"><strong>descrive<\/strong><\/a> un nuovo sistema per trasformare un&#8217;<em>Escherichia coli<\/em> in un pozzo di petrolio (link miei):<\/span><\/p>\n<p><em>The activity of the fatty acid (FA) reductase complex from <\/em><a href=\"http:\/\/en.wikipedia.org\/wiki\/Photorhabdus_luminescens\" target=\"_blank\" rel=\"noopener\"><strong>Photorhabdus luminescens<\/strong><\/a><em> was coupled with aldehyde decarbonylase from <\/em><a href=\"http:\/\/genome.jgi.doe.gov\/nospu\/nospu.home.html\" target=\"_blank\" rel=\"noopener\"><strong>Nostoc punctiforme<\/strong><\/a><em> to use free FAs as substrates for alkane biosynthesis&#8230;\u00a0Genetic components for targeted manipulation of the FA pool included expression of a thioesterase from <\/em><a href=\"http:\/\/upload.wikimedia.org\/wikipedia\/commons\/a\/a2\/Cinnamomum_camphora_Turramurra_railway.jpg\" target=\"_blank\" rel=\"noopener\"><strong>Cinnamomum camphora<\/strong><\/a> <em>(camphor) to alter alkane Cn and expression of<\/em><em> (&#8230;)<\/em><em> protein synthase III from <\/em><a href=\"http:\/\/it.wikipedia.org\/wiki\/Bacillus_subtilis\" target=\"_blank\" rel=\"noopener\"><strong>Bacillus subtilis<\/strong><\/a> <em>to synthesize branched (iso-) alkanes<\/em><\/p>\n<p>Componenti fatti e assemblati in casa, e depositati nella Genbank (non brevettabili).<\/p>\n<p><em>Rather than simply reconstituting existing metabolic routes to alkane production found in nature, these results demonstrate the ability to design and implement artificial molecular pathways for the production of renewable, industrially relevant fuel molecules.<\/em><\/p>\n<p><span style=\"font-size: 13px; line-height: 19px;\">Rinnovabili s\u00ec, ma anche un bastardo di\u00a0<em>E. coli<\/em> deve mangiare. Gli acidi grassi da ridurre col suo complesso, <a href=\"http:\/\/blogs.smithsonianmag.com\/science\/2013\/04\/genetically-modified-e-coli-bacteria-can-now-synthesize-diesel-fuel\/\" target=\"_blank\" rel=\"noopener\"><strong>dove li prende<\/strong><\/a>?<\/span><\/p>\n<p><span style=\"font-size: 13px; line-height: 19px;\"><strong>Coincidenza<\/strong><\/span><br \/>\n<span style=\"font-size: 13px; line-height: 19px;\">Su <\/span><em>PLoS One<\/em><span style=\"font-size: 13px; line-height: 19px;\"> &#8211; a proposito dei &#8220;<a href=\"http:\/\/www.cbd.int\/sp\/targets\" target=\"_blank\" rel=\"noopener\"><strong>20 obiettivi di Aichi<\/strong><\/a>&#8221; per il 2020 (Convenzione per la biodiversit\u00e0) &#8211; Kent Redford <\/span><span style=\"font-size: 13px; line-height: 19px;\"><em>et al. <\/em><a href=\"http:\/\/www.plosbiology.org\/article\/info%3Adoi%2F10.1371%2Fjournal.pbio.1001530;jsessionid=27A4D2C6E7ABE29B1320CAC73A7B0EA7\" target=\"_blank\" rel=\"noopener\"><strong>scrivono<\/strong><\/a> che prima di creare nuovi organismi che finiranno nell&#8217;ambiente, bisogna pensare alle possibile conseguenze. Invece di pensarci dopo come si \u00e8 fatto per oltre un secolo con la chimica sintetica:<\/span><\/p>\n<p><em>Despite growing general debate, there has been surprisingly limited consideration of the risks or advantages of synthetic organisms to the conservation of biological diversity. <\/em><br \/>\nFerve il dibattito sugli aspetti filosofici, legali e sociali, ma non sulle ripercussioni pratiche. Gli autori identificano vantaggi e svantaggi per le cinque categorie di Aichi:<\/p>\n<p>Non so se conviene invocare \u00a0l&#8217;idea di natura, come se ne esistesse una sola, comunque l&#8217;articolo \u00e8 utile per le Ong, trovo, anche per la bibliografia in gran parte open access.<\/p>\n<p><strong>Ramazza solare <\/strong><br \/>\nNell&#8217;infrarosso, la tempesta solare dell&#8217;8-10 marzo ha &#8220;illuminato la termosfera come un albero di Natale&#8221; \u00a0con 26 miliardi di chilowatt\/ora,\u00a0<a href=\"http:\/\/science.nasa.gov\/science-news\/science-at-nasa\/2012\/22mar_saber\/\" target=\"_blank\" rel=\"noopener\"><strong>dicevano<\/strong><\/a> alla NASA un mese fa. Per fortuna, CO2 e NO hanno fatto da termostato e riflesso il 95% dell&#8217;energia. Altra metafora os\u00e9e:<\/p>\n<p><em>During the heating impulse, the thermosphere puffed up like a marshmallow held over a campfire, temporarily increasing the drag on low-orbiting satellites.\u00a0 This is both good and bad.\u00a0 On the one hand, extra drag helps clear space junk out of Earth orbit.\u00a0 On the other hand, it decreases the lifetime of useful satellites by bringing them closer to the day of re-entry.<\/em><br \/>\n<em>\u201cWe\u2019re just emerging from a deep solar minimum,\u201d says Russell.\u00a0 \u201cThe solar cycle is gaining strength with a maximum expected in 2013.\u201d <\/em><\/p>\n<p>Smentir\u00e0 le <a href=\"http:\/\/www.slideshare.net\/esaops\/esa-media-fact-sheet-space-debris-22-april-2013\"><strong>previsioni<\/strong><\/a> sui <strong><a href=\"http:\/\/congrexprojects.com\/13a09\/introduction\" target=\"_blank\" rel=\"noopener\">rischi da pattume crescente<\/a><\/strong> nella &#8220;regione orbitale economicamente vitale&#8221;, come dicevano ieri all&#8217;ESA fuor di metafora?<\/p>\n<p><strong>&#8220;<a href=\"http:\/\/www.matematicamente.it\/approfondimenti\/problem_solving\/il_libro_della_natura_e_scritto_in_lingua_matematica_o_oscuro_labirinto?_%5Bgalilei%5D_200907225622\/\" target=\"_blank\" rel=\"noopener\">Egli \u00e8 scritto in lingua matematica<\/a>&#8220;?<\/strong><br \/>\nIl 5 aprile sul <em>Wall Street Journal <\/em>&#8211; of all places&#8230; &#8211; \u00a0E. O. Wilson <a href=\"http:\/\/online.wsj.com\/article\/SB10001424127887323611604578398943650327184.html\" target=\"_blank\" rel=\"noopener\"><strong>aveva scritto<\/strong><\/a> che conta formulare bene il problema, la matematica &#8220;viene dopo&#8221;. <a href=\"http:\/\/blogs.scientificamerican.com\/guest-blog\/2013\/04\/09\/sciences-cult-of-calculation\/\" target=\"_blank\" rel=\"noopener\"><strong>Da allora<\/strong><\/a> <strong><a href=\"http:\/\/www.slate.com\/articles\/health_and_science\/science\/2013\/04\/e_o_wilson_is_wrong_about_math_and_science.html\" target=\"_blank\" rel=\"noopener\">apriti<\/a> <a href=\"http:\/\/scienceblogs.com\/principles\/2013\/04\/12\/e-o-wilson-and-learning-the-wrong-lesson\/\" target=\"_blank\" rel=\"noopener\">cielo<\/a> e <a href=\"http:\/\/smallpondscience.com\/2013\/04\/08\/tribalism-in-the-sciences-empiricists-vs-theoreticians\/\" target=\"_blank\" rel=\"noopener\">riapriti<\/a> e <a href=\"http:\/\/jonfwilkins.com\/2013\/04\/e-o-wilson-is-wrong-again-not-about-math-but-about-collaboration\/\" target=\"_blank\" rel=\"noopener\">riapriti<\/a> <a href=\"http:\/\/dynamicecology.wordpress.com\/2013\/04\/19\/bonus-friday-link-the-issue-with-e-o-wilson-isnt-math-its-collaboration\/\" target=\"_blank\" rel=\"noopener\">cielo<\/a>.<\/strong> (<a href=\"http:\/\/rabett.blogspot.it\/2013\/04\/on-mathematics-and-science.html\" target=\"_blank\" rel=\"noopener\">h\/t<\/a>)<\/p>\n<p><strong>E-cat LOL<\/strong><br \/>\nIl <a href=\"http:\/\/22passi.blogspot.it\/2013\/04\/a-tutti-i-ricercatori-lenrfusione.html\" target=\"_blank\" rel=\"noopener\"><strong>Fourth Party Report<\/strong><\/a> suscita\u00a0<strong><a href=\"http:\/\/www.e-catworld.com\/2013\/04\/what-is-passerini-saying\/\" target=\"_blank\" rel=\"noopener\">entusiasmo<\/a> (not).<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Avvertenza: ci si prova da vent&#8217;anni, per ora miracoli niente. Sui\u00a0PNAS, il gruppo di Stephen Aves e John Love &#8211; univ. di Exeter &#8211; descrive un nuovo sistema per trasformare un&#8217;Escherichia coli in un pozzo di petrolio (link miei): The activity of the fatty acid (FA) reductase complex from Photorhabdus luminescens was coupled with aldehyde&hellip; <a class=\"more-link\" href=\"https:\/\/archivio.ocasapiens.org\/index.php\/2013\/04\/23\/patchwork\/\">Continua a leggere <span class=\"screen-reader-text\">Patchwork<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,6,19,23],"tags":[856,1600,1909,2088,5060],"class_list":["post-17240","post","type-post","status-publish","format-standard","hentry","category-ambiente","category-biologia","category-matematica","category-non-profit","tag-biocarburanti","tag-convenzione-per-la-biodiversita","tag-detriti-spaziali","tag-e-cat","tag-organismi-sintetici","entry"],"_links":{"self":[{"href":"https:\/\/archivio.ocasapiens.org\/index.php\/wp-json\/wp\/v2\/posts\/17240","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/archivio.ocasapiens.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/archivio.ocasapiens.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/archivio.ocasapiens.org\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/archivio.ocasapiens.org\/index.php\/wp-json\/wp\/v2\/comments?post=17240"}],"version-history":[{"count":2,"href":"https:\/\/archivio.ocasapiens.org\/index.php\/wp-json\/wp\/v2\/posts\/17240\/revisions"}],"predecessor-version":[{"id":41477,"href":"https:\/\/archivio.ocasapiens.org\/index.php\/wp-json\/wp\/v2\/posts\/17240\/revisions\/41477"}],"wp:attachment":[{"href":"https:\/\/archivio.ocasapiens.org\/index.php\/wp-json\/wp\/v2\/media?parent=17240"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/archivio.ocasapiens.org\/index.php\/wp-json\/wp\/v2\/categories?post=17240"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/archivio.ocasapiens.org\/index.php\/wp-json\/wp\/v2\/tags?post=17240"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}