{"id":18014,"date":"2020-06-24T23:40:02","date_gmt":"2020-06-24T23:40:02","guid":{"rendered":"https:\/\/www.radiation-dosimetry.org\/o-que-e-exemplo-de-doses-em-rems-definicao\/"},"modified":"2020-07-23T07:13:58","modified_gmt":"2020-07-23T07:13:58","slug":"o-que-e-exemplo-de-doses-em-rems-definicao","status":"publish","type":"post","link":"https:\/\/www.radiation-dosimetry.org\/pt-br\/o-que-e-exemplo-de-doses-em-rems-definicao\/","title":{"rendered":"O que \u00e9 exemplo de doses em rems &#8211; Defini\u00e7\u00e3o"},"content":{"rendered":"<div class=\"su-quote su-quote-style-default\">\n<div class=\"su-quote-inner su-u-clearfix su-u-trim\">Exemplos de doses em rems.\u00a0Nos pontos a seguir, tentamos expressar enormes faixas de exposi\u00e7\u00e3o \u00e0 radia\u00e7\u00e3o em rems, que podem ser obtidas de v\u00e1rias fontes.\u00a0Dosimetria de Radia\u00e7\u00e3o<\/div>\n<\/div>\n<div class=\"su-divider su-divider-style-dotted\"><\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights lgc-first lgc-last\">\n<div class=\"inside-grid-column\">\n<p><a href=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/roentgen-equivalent-man-definition-min.png\"><img loading=\"lazy\" class=\"alignright size-medium wp-image-25393 lazy-loaded\" src=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/roentgen-equivalent-man-definition-min-300x267.png\" alt=\"roentgen homem equivalente - rem\" width=\"300\" height=\"267\" data-lazy-type=\"image\" data-src=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/roentgen-equivalent-man-definition-min-300x267.png\" \/><\/a>Na prote\u00e7\u00e3o contra radia\u00e7\u00e3o, o\u00a0<strong>rem<\/strong>\u00a0(uma abrevia\u00e7\u00e3o de\u00a0<strong>Roentgen Equivalent Man<\/strong>\u00a0) \u00e9 a unidade n\u00e3o SI da\u00a0<strong>dose equivalente<\/strong>\u00a0, usada predominantemente nos EUA.\u00a0O\u00a0<strong>rem<\/strong>\u00a0representa o efeito biol\u00f3gico equivalente ao dep\u00f3sito de\u00a0<strong>cem ergs<\/strong>\u00a0(\u00a0<a href=\"https:\/\/www.radiation-dosimetry.org\/pt-br\/o-que-e-rad-dose-absorvida-por-radiacao-definicao\/\"><strong>um rad<\/strong><\/a>\u00a0) de energia de raios gama em um quilograma de tecido humano.\u00a0O\u00a0<strong>rem<\/strong>\u00a0n\u00e3o \u00e9 derivado da unidade de\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/radiation-protection\/radiation-exposure\/\">exposi\u00e7\u00e3o<\/a>\u00a0, o\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/radiation-protection\/radiation-exposure\/roentgen-unit-of-exposure\/\">roentgen<\/a>\u00a0.\u00a0O acr\u00f4nimo agora \u00e9 um artefato hist\u00f3rico enganoso, pois 1 roentgen realmente deposita cerca de 0,96 rem em tecido biol\u00f3gico mole, quando todos os fatores de pondera\u00e7\u00e3o s\u00e3o iguais \u00e0 unidade.<\/p>\n<h2>Exemplos de doses em rems<\/h2>\n<p><span>Devemos notar que a\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/radiation\/\"><span>radia\u00e7\u00e3o<\/span><\/a><span>\u00a0est\u00e1 \u00e0 nossa volta.\u00a0Dentro, ao redor e acima do mundo em que vivemos. \u00c9 uma for\u00e7a de energia natural que nos rodeia.\u00a0\u00c9 uma parte do nosso mundo natural que est\u00e1 aqui desde o nascimento do nosso planeta.\u00a0Nos pontos a seguir, tentamos expressar enormes faixas de exposi\u00e7\u00e3o \u00e0 radia\u00e7\u00e3o, que podem ser obtidas de v\u00e1rias fontes.<\/span><\/p>\n<ul>\n<li><strong><span>0,005 mrem<\/span><\/strong><span>\u00a0&#8211; Dormindo ao lado de algu\u00e9m<\/span><\/li>\n<li><strong><span>0,009 mrem<\/span><\/strong><span>\u00a0\u00a0&#8211; Morando at\u00e9 48 quil\u00f4metros de uma usina nuclear por um ano<\/span><\/li>\n<li><strong><span>0,01 mrem<\/span><\/strong><span>\u00a0\u00a0&#8211; Comendo uma banana<\/span><\/li>\n<li><strong><span>0,03 mrem<\/span><\/strong><span>\u00a0\u00a0&#8211; Morando a 80 quil\u00f4metros de uma usina a carv\u00e3o por um ano<\/span><\/li>\n<li><strong><span>1 mrem<\/span><\/strong><span>\u00a0\u00a0&#8211; dose di\u00e1ria m\u00e9dia recebida do fundo natural<\/span><\/li>\n<li><strong><span>2 mrem<\/span><\/strong><span>\u00a0\u00a0&#8211; radiografia de t\u00f3rax<\/span><\/li>\n<li><strong><span>4 mrem<\/span><\/strong><span>\u00a0\u00a0&#8211; Um voo de avi\u00e3o de 5 horas<\/span><\/li>\n<li><strong><span>60 mrem<\/span><\/strong><span>\u00a0\u00a0&#8211; mamografia<\/span><\/li>\n<li><strong><span>100 mrem<\/span><\/strong><span>\u00a0\u00a0&#8211; Limite de dose para membros individuais do p\u00fablico, dose efetiva total por ano<\/span><\/li>\n<li><strong><span>365 mrem<\/span><\/strong><span>\u00a0\u00a0&#8211; Dose m\u00e9dia anual recebida do fundo natural<\/span><\/li>\n<li><strong><span>580 mrem<\/span><\/strong><span>\u00a0\u00a0&#8211; tomografia computadorizada do t\u00f3rax<\/span><\/li>\n<li><strong><span>1 000 mrem<\/span><\/strong><span>\u00a0\u00a0&#8211; Dose m\u00e9dia anual recebida da natureza em Ramsar, Ir\u00e3<\/span><\/li>\n<li><strong><span>2.000 mrem<\/span><\/strong><span>\u00a0\u00a0&#8211; tomografia computadorizada de corpo inteiro<\/span><\/li>\n<li><strong><span>17 500 mrem<\/span><\/strong><span>\u00a0\u00a0&#8211; Dose anual de radia\u00e7\u00e3o natural em uma praia de monazita perto de Guarapari, Brasil.<\/span><\/li>\n<li><strong><span>500 000 mrem<\/span><\/strong><span>\u00a0\u00a0&#8211; dose que mata um ser humano com um risco de 50% dentro de 30 dias (LD50 \/ 30), se a dose for recebida por um per\u00edodo\u00a0<\/span><strong><span>muito curto<\/span><\/strong><span>\u00a0.<\/span><\/li>\n<\/ul>\n<p><span>Como pode ser visto, doses baixas s\u00e3o comuns na vida cotidiana.\u00a0Os exemplos anteriores podem ajudar a ilustrar magnitudes relativas.\u00a0Do ponto de vista das consequ\u00eancias biol\u00f3gicas, \u00e9 muito importante distinguir entre doses recebidas em\u00a0<strong>per\u00edodos\u00a0<\/strong><\/span><strong><span>curtos<\/span><\/strong><span>\u00a0e\u00a0<\/span><strong><span>prolongados<\/span><\/strong><span>\u00a0.\u00a0Uma \u201c\u00a0<\/span><strong><span>dose aguda<\/span><\/strong><span>\u00a0\u201d \u00e9 aquela que ocorre por um per\u00edodo curto e finito de tempo, enquanto uma \u201c\u00a0<strong>dose cr\u00f4nica<\/strong>\u00a0\u201d<\/span><span>\u201d\u00c9 uma dose que continua por um longo per\u00edodo de tempo, para que seja melhor descrita por uma taxa de dose.\u00a0Altas doses tendem a matar c\u00e9lulas, enquanto doses baixas tendem a danific\u00e1-las ou alter\u00e1-las.\u00a0Doses baixas espalhadas por longos per\u00edodos de tempo n\u00e3o causam problemas imediatos a nenhum \u00f3rg\u00e3o do corpo.\u00a0Os efeitos de baixas doses de radia\u00e7\u00e3o ocorrem no n\u00edvel da c\u00e9lula e os resultados podem n\u00e3o ser observados por muitos anos.<\/span><\/p>\n<\/div>\n<p>&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;.<\/p>\n<p>Este artigo \u00e9 baseado na tradu\u00e7\u00e3o autom\u00e1tica do artigo original em ingl\u00eas. Para mais informa\u00e7\u00f5es, consulte o artigo em ingl\u00eas. Voc\u00ea pode nos ajudar. Se voc\u00ea deseja corrigir a tradu\u00e7\u00e3o, envie-a para: translations@nuclear-power.com ou preencha o formul\u00e1rio de tradu\u00e7\u00e3o on-line. Agradecemos sua ajuda, atualizaremos a tradu\u00e7\u00e3o o mais r\u00e1pido poss\u00edvel. Obrigado.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Exemplos de doses em rems.\u00a0Nos pontos a seguir, tentamos expressar enormes faixas de exposi\u00e7\u00e3o \u00e0 radia\u00e7\u00e3o em rems, que podem ser obtidas de v\u00e1rias fontes.\u00a0Dosimetria de Radia\u00e7\u00e3o Na prote\u00e7\u00e3o contra radia\u00e7\u00e3o, o\u00a0rem\u00a0(uma abrevia\u00e7\u00e3o de\u00a0Roentgen Equivalent Man\u00a0) \u00e9 a unidade n\u00e3o SI da\u00a0dose equivalente\u00a0, usada predominantemente nos EUA.\u00a0O\u00a0rem\u00a0representa o efeito biol\u00f3gico equivalente ao dep\u00f3sito de\u00a0cem ergs\u00a0(\u00a0um &#8230; <a title=\"O que \u00e9 exemplo de doses em rems &#8211; Defini\u00e7\u00e3o\" class=\"read-more\" href=\"https:\/\/www.radiation-dosimetry.org\/pt-br\/o-que-e-exemplo-de-doses-em-rems-definicao\/\" aria-label=\"More on O que \u00e9 exemplo de doses em rems &#8211; Defini\u00e7\u00e3o\">Ler mais<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[51],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>O que \u00e9 exemplo de doses em rems - Defini\u00e7\u00e3o<\/title>\n<meta name=\"description\" content=\"Exemplos de doses em rems. 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