{"id":11386070,"date":"2019-11-07T00:00:00","date_gmt":"2019-11-06T23:00:00","guid":{"rendered":"https:\/\/alertdiver.eu\/uncategorized-fi_fi\/gfn-laskeminen\/"},"modified":"2019-11-07T00:00:00","modified_gmt":"2019-11-06T23:00:00","slug":"gfn-laskeminen","status":"publish","type":"post","link":"https:\/\/alertdiver.eu\/fi_FI\/artikkelit\/gfn-laskeminen\/","title":{"rendered":"GF:n laskeminen"},"content":{"rendered":"<p style=\"text-align: justify;\"><span lang=\"FI\">Dekompression tutkija Erik Baker kehitti 1990-luvulla gradienttifaktorit <strong>(Gradient Factors, GF)<\/strong>, joita k&auml;ytet&auml;&auml;n yleisesti Buhlmannin dekompressiomallien kanssa pyritt&auml;ess&auml; tekem&auml;&auml;n sukelluksista konservatiivisi&auml;. Gradienttifaktorit edustavat osaa reagoimattoman kaasun maksimisupersaturaatiosta tai M-arvosta, jonka jokainen teoreettinen kudostyyppi tai Buhlmannin mallin mukainen &quot;lokero&quot; kykenee siet&auml;m&auml;&auml;n ilman sukeltajantaudin kehittymist&auml;. Suositussa Buhlmannin ZH-16 -mallissa on 16 kudostyyppi&auml;, joiden saturaation ja desaturaation puoliintumisajat vaihtelevat 4 minuutista 635 minuuttiin.&nbsp;<\/span><\/p>\n<p style=\"text-align: justify;\"><span lang=\"FI\">Useimmat sukellustietokoneet tai dekompressiota suunnittelevat ohjelmat mahdollistavat sen, ett&auml; k&auml;ytt&auml;j&auml; asettaa yhden GF:n s&auml;&auml;t&auml;&auml;kseen sukelluksen alustavan nousuvaiheen. T&auml;m&auml; tapahtuu rajoittamalla supersaturaatiota tai ylipaineistamalla &quot;johtava kudos&quot; (&quot;lokero&quot;, jossa on korkein supersaturaatiotaso) murto-osaan ex: 50 % kyseisen kudoksen M-arvosta. K&auml;ytt&auml;j&auml;t asettavat tyypillisesti toisen GF:n rajoittaakseen supersaturaatiota kudostyypeiss&auml; viimeisen nousun aikana ennen pintaa.<\/span><\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" class=\"fr-dib fr-draggable\" src=\"\/wp-content\/uploads\/imgimport\/986\/computer-1500.jpg\" style=\"width: auto;\"><\/p>\n<p style=\"text-align: justify;\"><span lang=\"FI\">Gradienttifaktoreita<\/span><span lang=\"FI\">&nbsp;voidaan k&auml;ytt&auml;&auml; my&ouml;s typen supersaturaation mittaamiseen johtavassa kudoksessa sukellusprofiilin miss&auml; tahansa annetussa ajassa ja syvyydess&auml; pintaan nousun aikana. Tutkijat laskivat sukeltajantaudin riskitekij&auml;tutkimuksessa GF-arvot 16 kudostyypille jokaista tutkimuksessa k&auml;ytetty&auml; sukellusprofiilia koskien. Sitten he tallensivat GF:n maksimiarvon johtavalle kudokselle jokaiseen sukellukseen liittyen. Voimme ajatella, ett&auml; siin&auml; mitattiin kyseess&auml; olevan sukellusprofiilin konservatiivisuutta.&nbsp;<\/span><\/p>\n<p style=\"text-align: justify;\"><\/p>\n<hr>\n<p style=\"\"><\/p>\n<p style=\"\"><strong><span style=\"font-size: 18px;\">Tietoa artikkelin kirjoittajasta<\/span><\/strong><\/p>\n<p style=\"text-align: justify;\">Michael Menduno on palkittu toimittaja ja tekniikan alan asiantuntija, joka on kirjoittanut sukeltamisesta ja sukellusteknologiasta monen vuosikymmenen ajan. H&auml;n on luonut termin &quot;tekniikkasukellus&quot;, ja h&auml;nen kirjoituksiaan on julkaistu esimerkiksi seuraavissa lehdiss&auml;: Alert Diver, DIVER, Quest, Scientific American, Scuba Times, Sports Diver, Undercurrent, Undersea Journal, WIRED ja X-Ray. Menduno perusti aquaCORPS-lehden ja toimi sen p&auml;&auml;toimittajana. T&auml;m&auml; lehti auttoi osaltaan tekniikkasukellusta p&auml;&auml;sem&auml;&auml;n mukaan urheilusukelluksen valtavirtaan. Mendunon ansiota ovat my&ouml;s ensimm&auml;iset Tek-, EuroTek- ja AsiaTek-konferenssit. <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dekompression tutkija Erik Baker kehitti 1990-luvulla gradienttifaktorit (Gradient Factors, GF), joita k&auml;ytet&auml;&auml;n yleisesti Buhlmannin dekompressiomallien kanssa pyritt&auml;ess&auml; tekem&auml;&auml;n sukelluksista konservatiivisi&auml;. Gradienttifaktorit edustavat osaa reagoimattoman kaasun&#8230;<\/p>\n","protected":false},"author":1,"featured_media":11376307,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[385],"tags":[1920],"authors":[1487],"class_list":["post-11386070","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-artikkelit","tag-laaketieteellinen-linja","authors-michael-menduno"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>GF:n laskeminen - Alert Diver<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/alertdiver.eu\/fi_FI\/artikkelit\/gfn-laskeminen\/\" \/>\n<meta property=\"og:locale\" content=\"fi_FI\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"GF:n laskeminen - Alert Diver\" \/>\n<meta property=\"og:description\" content=\"Dekompression tutkija Erik Baker kehitti 1990-luvulla gradienttifaktorit (Gradient Factors, GF), joita k&auml;ytet&auml;&auml;n yleisesti Buhlmannin dekompressiomallien kanssa pyritt&auml;ess&auml; tekem&auml;&auml;n sukelluksista konservatiivisi&auml;. 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