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:root :where(.wp-block-pullquote){font-size: 1.5em;line-height: 1.6;}#mvp-wallpaper {
background: url() no-repeat 50% 0;
}
#mvp-foot-copy a {
color: #f58634;
}
#mvp-content-main p a,
#mvp-content-main ul a,
#mvp-content-main ol a,
.mvp-post-add-main p a,
.mvp-post-add-main ul a,
.mvp-post-add-main ol a {
box-shadow: inset 0 -4px 0 #f58634;
}
#mvp-content-main p a:hover,
#mvp-content-main ul a:hover,
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.mvp-post-add-main p a:hover,
.mvp-post-add-main ul a:hover,
.mvp-post-add-main ol a:hover {
background: #f58634;
}
a,
a:visited,
.post-info-name a,
.woocommerce .woocommerce-breadcrumb a {
color: #ff005b;
}
#mvp-side-wrap a:hover {
color: #ff005b;
}
.mvp-fly-top:hover,
.mvp-vid-box-wrap,
ul.mvp-soc-mob-list li.mvp-soc-mob-com {
background: #020068;
}
nav.mvp-fly-nav-menu ul li.menu-item-has-children:after,
.mvp-feat1-left-wrap span.mvp-cd-cat,
.mvp-widget-feat1-top-story span.mvp-cd-cat,
.mvp-widget-feat2-left-cont span.mvp-cd-cat,
.mvp-widget-dark-feat span.mvp-cd-cat,
.mvp-widget-dark-sub span.mvp-cd-cat,
.mvp-vid-wide-text span.mvp-cd-cat,
.mvp-feat2-top-text span.mvp-cd-cat,
.mvp-feat3-main-story span.mvp-cd-cat,
.mvp-feat3-sub-text span.mvp-cd-cat,
.mvp-feat4-main-text span.mvp-cd-cat,
.woocommerce-message:before,
.woocommerce-info:before,
.woocommerce-message:before {
color: #020068;
}
#searchform input,
.mvp-authors-name {
border-bottom: 1px solid #020068;
}
.mvp-fly-top:hover {
border-top: 1px solid #020068;
border-left: 1px solid #020068;
border-bottom: 1px solid #020068;
}
.woocommerce .widget_price_filter .ui-slider .ui-slider-handle,
.woocommerce #respond input#submit.alt,
.woocommerce a.button.alt,
.woocommerce button.button.alt,
.woocommerce input.button.alt,
.woocommerce #respond input#submit.alt:hover,
.woocommerce a.button.alt:hover,
.woocommerce button.button.alt:hover,
.woocommerce input.button.alt:hover {
background-color: #020068;
}
.woocommerce-error,
.woocommerce-info,
.woocommerce-message {
border-top-color: #020068;
}
ul.mvp-feat1-list-buts li.active span.mvp-feat1-list-but,
span.mvp-widget-home-title,
span.mvp-post-cat,
span.mvp-feat1-pop-head {
background: #f58634;
}
.woocommerce span.onsale {
background-color: #f58634;
}
.mvp-widget-feat2-side-more-but,
.woocommerce .star-rating span:before,
span.mvp-prev-next-label,
.mvp-cat-date-wrap .sticky {
color: #f58634 !important;
}
#mvp-main-nav-top,
#mvp-fly-wrap,
.mvp-soc-mob-right,
#mvp-main-nav-small-cont {
background: #020068;
}
#mvp-main-nav-small .mvp-fly-but-wrap span,
#mvp-main-nav-small .mvp-search-but-wrap span,
.mvp-nav-top-left .mvp-fly-but-wrap span,
#mvp-fly-wrap .mvp-fly-but-wrap span {
background: #ffffff;
}
.mvp-nav-top-right .mvp-nav-search-but,
span.mvp-fly-soc-head,
.mvp-soc-mob-right i,
#mvp-main-nav-small span.mvp-nav-search-but,
#mvp-main-nav-small .mvp-nav-menu ul li a {
color: #ffffff;
}
#mvp-main-nav-small .mvp-nav-menu ul li.menu-item-has-children a:after {
border-color: #ffffff transparent transparent transparent;
}
#mvp-nav-top-wrap span.mvp-nav-search-but:hover,
#mvp-main-nav-small span.mvp-nav-search-but:hover {
color: #f58634;
}
#mvp-nav-top-wrap .mvp-fly-but-wrap:hover span,
#mvp-main-nav-small .mvp-fly-but-wrap:hover span,
span.mvp-woo-cart-num:hover {
background: #f58634;
}
#mvp-main-nav-bot-cont {
background: #020068;
}
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#mvp-nav-bot-wrap .mvp-search-but-wrap span {
background: #ffffff;
}
#mvp-nav-bot-wrap span.mvp-nav-search-but,
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color: #ffffff;
}
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}
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border-bottom: 5px solid #f58634;
}
#mvp-nav-bot-wrap .mvp-fly-but-wrap:hover span {
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}
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}
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span.mvp-post-excerpt,
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span.mvp-feat-caption,
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span.mvp-author-box-name a,
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a.mvp-inf-more-but,
span.mvp-cont-read-but,
span.mvp-cd-cat,
span.mvp-cd-date,
.mvp-feat4-main-text p,
span.mvp-woo-cart-num,
span.mvp-widget-home-title2,
.wp-caption,
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#mvp-feat6-text p {
font-family: 'Roboto', sans-serif;
font-display: swap;
}
.mvp-blog-story-text p,
span.mvp-author-page-desc,
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.mvp-widget-feat2-left-text p,
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.rwp-summary,
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.mvp-feat5-small-main-text p,
#mvp-content-main .wp-block-button__link,
.wp-block-audio figcaption,
.wp-block-video figcaption,
.wp-block-embed figcaption,
.wp-block-verse pre,
pre.wp-block-verse {
font-family: 'PT Serif', sans-serif;
font-display: swap;
}
.mvp-nav-menu ul li a,
#mvp-foot-menu ul li a {
font-family: 'Oswald', sans-serif;
font-display: swap;
}
.mvp-feat1-sub-text h2,
.mvp-feat1-pop-text h2,
.mvp-feat1-list-text h2,
.mvp-widget-feat1-top-text h2,
.mvp-widget-feat1-bot-text h2,
.mvp-widget-dark-feat-text h2,
.mvp-widget-dark-sub-text h2,
.mvp-widget-feat2-left-text h2,
.mvp-widget-feat2-right-text h2,
.mvp-blog-story-text h2,
.mvp-flex-story-text h2,
.mvp-vid-wide-more-text p,
.mvp-prev-next-text p,
.mvp-related-text,
.mvp-post-more-text p,
h2.mvp-authors-latest a,
.mvp-feat2-bot-text h2,
.mvp-feat3-sub-text h2,
.mvp-feat3-main-text h2,
.mvp-feat4-main-text h2,
.mvp-feat5-text h2,
.mvp-feat5-mid-main-text h2,
.mvp-feat5-small-main-text h2,
.mvp-feat5-mid-sub-text h2,
#mvp-feat6-text h2,
.alp-related-posts-wrapper .alp-related-post .post-title {
font-family: 'Oswald', sans-serif;
font-display: swap;
}
.mvp-feat2-top-text h2,
.mvp-feat1-feat-text h2,
h1.mvp-post-title,
h1.mvp-post-title-wide,
.mvp-drop-nav-title h4,
#mvp-content-main blockquote p,
.mvp-post-add-main blockquote p,
#mvp-content-main p.has-large-font-size,
#mvp-404 h1,
#woo-content h1.page-title,
.woocommerce div.product .product_title,
.woocommerce ul.products li.product h3,
.alp-related-posts .current .post-title {
font-family: 'Oswald', sans-serif;
font-display: swap;
}
span.mvp-feat1-pop-head,
.mvp-feat1-pop-text:before,
span.mvp-feat1-list-but,
span.mvp-widget-home-title,
.mvp-widget-feat2-side-more,
span.mvp-post-cat,
span.mvp-page-head,
h1.mvp-author-top-head,
.mvp-authors-name,
#mvp-content-main h1,
#mvp-content-main h2,
#mvp-content-main h3,
#mvp-content-main h4,
#mvp-content-main h5,
#mvp-content-main h6,
.woocommerce .related h2,
.woocommerce div.product .woocommerce-tabs . h2,
.woocommerce div.product .product_title,
.mvp-feat5-side-list .mvp-feat1-list-img:after {
font-family: 'Roboto', sans-serif;
font-display: swap;
}
#mvp-main-body-wrap {
padding-top: 20px;
}
#mvp-feat2-wrap,
#mvp-feat4-wrap,
#mvp-post-feat-img-wide,
#mvp-vid-wide-wrap {
margin-top: -20px;
}
@media screen and (max-width: 479px) {
#mvp-main-body-wrap {
padding-top: 15px;
}
#mvp-feat2-wrap,
#mvp-feat4-wrap,
#mvp-post-feat-img-wide,
#mvp-vid-wide-wrap {
margin-top: -15px;
}
}
#mvp-leader-wrap {
position: relative;
}
#mvp-site-main {
margin-top: 0;
}
#mvp-leader-wrap {
top: 0 !important;
}
.mvp-nav-links {
display: none;
}
.single .mvp-post-main-out,
.single .mvp-post-main-in {
margin-right: 0 !important;
}
#mvp-post-feat-img img {
width: 100%;
}
#mvp-post-content,
#mvp-post-add-box {
float: none;
margin: 0 auto;
max-width: 750px;
}
.alp-advert {
display: none;
}
.alp-related-posts-wrapper .alp-related-posts .current {
margin: 0 0 10px;
}
.mvp-nav-small-mid-right {
max-width:100%!important;
}
.mvp-feat5-main-wrap h3.mvp-feat1-pop-head {
display:none;
}
.mvp-feat5-small-wrap {
margin:0 0 0 3.529411765%;
}
.mvp-feat5-mid-wrap {
float:left !important;
}
.mvp-feat5-mid-sub-out {
margin:0 !important;
}
.mvp-vid-box-wrap {
color:#FFF!important;
}
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Molécula rara em Vênus pode sinalizar presença de vida extraterrestre 5ha13
Mundo 42626n Molécula rara em Vênus pode sinalizar presença de vida extraterrestre 5ha13
Concentração de molécula pode ser resultado de atividade orgânica
Publicado há
5 anos em
14/09/2020
Um grupo internacional de astrônomos anunciou nesta segunda-feira (14) a presença da fosfina na atmosfera venusiana. O estudo foi publicado na revista Nature Astronomy – periódico britânico científico especializado em artigos científicos.
De acordo com a pesquisa, na Terra, a fosfina – ou hidreto de fósforo (PH3) – só pode ser encontrada decorrente de dois processos: ou pela fabricação de forma industrial ou pela ação de micróbios que se desenvolvem em ambientes sem oxigênio – chamados anaeróbicos. Utilizando telescópios avançados, a equipe formada por astrônomos do Reino Unido, Estados Unidos e Japão pôde confirmar a presença da molécula em Vênus. A primeira detecção ocorreu pelo Telescópio James Clerk Maxwell (JCMT), operado pelo Observatório do Leste Asiático no Havaí.
“Quando descobrimos os primeiros indícios de fosfina no espectro de Vênus, ficamos em choque!”, declarou a líder da equipe internacional Jane Greaves, da Universidade de Cardiff, no Reino Unido. Para confirmação do achado, foram usadas 45 antenas do Atacama Large Millimeter/submillimeter Array (ALMA) – instalação astronômica no Chile, do qual o ESO – Observatório Europeu do Sul – é parceiro.
O telescópio, considerado muito mais sensível, localizou pequenas concentrações da fosfina na atmosfera de Vênus, cerca de 20 moléculas em cada bilhão. Com base em cálculos, descartou-se que a quantidade observada seria decorrente de processos não biológicos naturais no planeta, como a luz solar, ou a ação de vulcões e relâmpagos, por exemplo. No caso destas fontes, seriam criados, no máximo, dez milésimos da quantidade de fosfina identificada no planeta.
Já que, segundo a análise, não seriam estes processos responsáveis por criar a quantidade de fosfina liberada, os cientistas aram a considerar, então, a possibilidade que um tipo de organismo possa ser fonte deste biomarcador. A equipe destaca que na Terra, as bactérias expelem a fosfina ao retirar o fosfato de minerais ou de material biológico, acrescentando hidrogênio. Mas, qualquer organismo no planeta vizinho, ressalta o estudo, “provavelmente será muito diferente dos primos terrestres.”
Atmosfera ácida
Os astrônomos veem esta descoberta como bastante significativa, mas reconhecem muito trabalho pela frente para confirmar presença de ''vida''. Isso porque a atmosfera de Vênus é extremamente ácida, com cerca de 90% de ácido sulfúrico, o que dificultaria a sobrevivência de micróbios, destaca o Observatório Europeu do Sul.
Esta incógnita é apontada como desafio pela integrante da equipe, Clara Sousa Silva, do Massachusetts Institute of Technology nos Estados Unidos, que investiga a liberação de fosfina como uma bio de gás de vida anaeróbica em planetas que orbitam outras estrelas.
“Encontrar fosfina em Vênus foi um bônus inesperado. A descoberta levanta muitas questões, tais como é que os organismos poderão sobreviver na atmosfera do planeta vizinho. Na Terra, alguns micróbios conseguem ar até cerca de 5% de ácido no seu meio — mas as nuvens de Vênus são quase inteiramente feitas de ácido”, diz a pesquisadora.
Embora a descoberta aumente as expectativas quanto à existência de vida fora da Terra, o astrônomo do ESO e gerente de operações do ALMA na Europa, Leonardo Testi, diz que a missão agora é investigar a origem química da fosfina. ''É essencial acompanhar este intrigante resultado com estudos teóricos e observacionais para excluir a possibilidade de que a fosfina em planetas rochosos possa ter também uma origem química diferente da Terra”, diz Testi.
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