{"id":7848,"date":"2017-11-23T01:21:48","date_gmt":"2017-11-22T18:21:48","guid":{"rendered":"http:\/\/ttud.com.vn\/?p=7848"},"modified":"2017-12-04T01:22:45","modified_gmt":"2017-12-03T18:22:45","slug":"o-nhiem-anh-sang-tang-nhanh-tren-pham-vi-toan-cau","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/o-nhiem-anh-sang-tang-nhanh-tren-pham-vi-toan-cau\/","title":{"rendered":"\u00d4 nhi\u1ec5m \u00e1nh s\u00e1ng t\u0103ng nhanh tr\u00ean ph\u1ea1m vi to\u00e0n c\u1ea7u"},"content":{"rendered":"

\"alt\"<\/p>\n

Nhi\u1ec1u n\u01a1i tr\u00ean th\u1ebf gi\u1edbi \u0111\u01b0\u1ee3c th\u1eafp s\u00e1ng h\u01a1n, nh\u01b0ng c\u00e1c nh\u00e0 khoa h\u1ecdc cho r\u1eb1ng \u0111\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 \u0111i\u1ec1u t\u1ed1t.<\/p>\n

Theo c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u, d\u1eef li\u1ec7u v\u1ec7 tinh ng\u00e0y 22\/11 cho th\u1ea5y b\u1ec1 m\u1eb7t ngo\u00e0i tr\u1eddi \u1edf Tr\u00e1i \u0111\u1ea5t \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng nh\u00e2n t\u1ea1o v\u00e0o ban \u0111\u00eam t\u0103ng kho\u1ea3ng 2% m\u1ed7i n\u0103m v\u1ec1 \u0111\u1ed9 s\u00e1ng v\u00e0 di\u1ec7n t\u00edch t\u1eeb n\u0103m 2012 \u0111\u1ebfn n\u0103m 2016, l\u00e0m d\u1ea5y l\u00ean m\u1ed1i lo ng\u1ea1i v\u1ec1 t\u00e1c \u0111\u1ed9ng sinh th\u00e1i c\u1ee7a \u00f4 nhi\u1ec5m \u00e1nh s\u00e1ng \u0111\u1ed1i v\u1edbi con ng\u01b0\u1eddi v\u00e0 \u0111\u1ed9ng v\u1eadt.<\/p>\n

C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u cho bi\u1ebft C\u01a1 quan Qu\u1ea3n l\u00fd \u0110\u1ea1i d\u01b0\u01a1ng v\u00e0 Kh\u00ed quy\u1ec3n Qu\u1ed1c gia M\u1ef9 (NOAA) c\u00f3 th\u1ec3 kh\u00f4ng quan t\u00e2m \u0111\u1ebfn t\u00ecnh h\u00ecnh v\u00ec c\u1ea3m bi\u1ebfn c\u1ee7a n\u00f3 kh\u00f4ng th\u1ec3 ph\u00e1t hi\u1ec7n ra m\u1ed9t s\u1ed1 \u00e1nh s\u00e1ng LED \u0111ang ng\u00e0y c\u00e0ng lan r\u1ed9ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u00e1nh s\u00e1ng m\u00e0u xanh.<\/p>\n

Nh\u00e0 v\u1eadt l\u00ed Christopher Kyba thu\u1ed9c Trung t\u00e2m Nghi\u00ean c\u1ee9u \u0111\u1ecba ch\u1ea5t c\u1ee7a \u0110\u1ee9c, ng\u01b0\u1eddi \u0111\u1ee9ng \u0111\u1ea7u nghi\u00ean c\u1ee9u cho bi\u1ebft tr\u00ean t\u1ea1p ch\u00ed Science Advances: Tr\u00e1i \u0111\u1ea5t \u0111ang tr\u1edf n\u00ean s\u00e1ng s\u1ee7a h\u01a1n v\u00e0o m\u1ed7i \u0111\u00eam. T\u00f4i th\u1ef1c s\u1ef1 kh\u00f4ng mong \u0111\u1ee3i \u0111i\u1ec1u \u0111\u00f3.<\/p>\n

M\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p ngo\u1ea1i l\u1ec7, \u00e1nh s\u00e1ng ban \u0111\u00eam \u0111\u01b0\u1ee3c th\u1ea5y nhi\u1ec1u \u1edf kh\u1eafp Nam M\u1ef9, Ch\u00e2u Phi v\u00e0 Ch\u00e2u \u00c1. \u00c1nh s\u00e1ng ch\u1ec9 \u1ed5n \u0111\u1ecbnh \u1edf m\u1ed9t s\u1ed1 qu\u1ed1c gia, bao g\u1ed3m m\u1ed9t s\u1ed1 n\u01b0\u1edbc s\u00e1ng nh\u1ea5t th\u1ebf gi\u1edbi nh\u01b0 \u00dd, H\u00e0 Lan, T\u00e2y Ban Nha v\u00e0 M\u1ef9 m\u1eb7c d\u00f9 c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u cho bi\u1ebft, m\u1ed9t s\u1ed1 c\u1ea3m bi\u1ebfn \u00e1nh s\u00e1ng kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng c\u00f3 th\u1ec3 che gi\u1ea5u s\u1ef1 gia t\u0103ng tr\u00ean th\u1ef1c t\u1ebf.<\/p>\n

Nh\u1eefng khu v\u1ef1c \u0111\u01b0\u1ee3c th\u1eafp s\u00e1ng c\u1ee7a \u00dac gi\u1ea3m do ch\u00e1y r\u1eebng. \u00c1nh s\u00e1ng ban \u0111\u00eam c\u0169ng gi\u1ea3m xu\u1ed1ng trong nh\u1eefng n\u01b0\u1edbc b\u1ecb chi\u1ebfn tranh t\u00e0n ph\u00e1 nh\u01b0 Syrian v\u00e0 Yemen.<\/p>\n

Nh\u00e0 sinh th\u00e1i h\u1ecdc Franz H\u00f6lker thu\u1ed9c Vi\u1ec7n Nghi\u00ean c\u1ee9u Sinh v\u1eadt h\u1ecdc v\u00e0 th\u1ee7y s\u1ea3n tr\u00ean c\u1ea1n (IGB) t\u1ea1i \u0110\u1ee9c cho r\u1eb1ng \u00f4 nhi\u1ec5m \u00e1nh s\u00e1ng g\u00e2y h\u1eadu qu\u1ea3 sinh th\u00e1i, v\u1edbi chu k\u1ef3 \u00e1nh s\u00e1ng t\u1ef1 nhi\u00ean b\u1ecb gi\u00e1n \u0111o\u1ea1n b\u1edfi \u00e1nh s\u00e1ng nh\u00e2n t\u1ea1o trong m\u00f4i tr\u01b0\u1eddng ban \u0111\u00eam. Theo \u00f4ng, b\u1ea7u tr\u1eddi ban \u0111\u00eam s\u00e1ng h\u01a1n c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn gi\u1ea5c ng\u1ee7 c\u1ee7a con ng\u01b0\u1eddi.<\/p>\n

Ngo\u00e0i vi\u1ec7c \u0111e do\u1ea1 30% \u0111\u1ed9ng v\u1eadt c\u00f3 x\u01b0\u01a1ng s\u1ed1ng s\u1ed1ng – lo\u00e0i \u0103n \u0111\u00eam v\u00e0 tr\u00ean 60% \u0111\u1ed9ng v\u1eadt kh\u00f4ng x\u01b0\u01a1ng s\u1ed1ng ho\u1ea1t \u0111\u1ed9ng v\u1ec1 \u0111\u00eam, \u00e1nh s\u00e1ng nh\u00e2n t\u1ea1o c\u0169ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn th\u1ef1c v\u1eadt v\u00e0 vi sinh v\u1eadt. N\u00f3 \u0111e do\u1ea1 \u0111a d\u1ea1ng sinh h\u1ecdc th\u00f4ng qua c\u00e1c th\u00f3i quen ban \u0111\u00eam thay \u0111\u1ed5i, nh\u01b0 m\u00f4 h\u00ecnh sinh s\u1ea3n ho\u1eb7c di c\u01b0 c\u1ee7a nhi\u1ec1u lo\u00e0i kh\u00e1c nhau nh\u01b0: c\u00f4n tr\u00f9ng, l\u01b0\u1ee1ng c\u01b0, c\u00e1, chim, d\u01a1i v\u00e0 c\u00e1c \u0111\u1ed9ng v\u1eadt kh\u00e1c – H\u00f6lker cho bi\u1ebft.<\/p>\n

Kyba cho r\u1eb1ng \u00e1nh s\u00e1ng ban \u0111\u00eam c\u0169ng che khu\u1ea5t c\u00e1c ng\u00f4i sao xu\u1ea5t hi\u1ec7n tr\u00ean b\u1ea7u tr\u1eddi trong h\u00e0ng thi\u00ean ni\u00ean k\u1ef7.<\/p>\n

C\u00e1c chuy\u00ean gia mong mu\u1ed1n vi\u1ec7c s\u1eed d\u1ee5ng \u0111\u00e8n LED hi\u1ec7u su\u1ea5t cao ng\u00e0y c\u00e0ng hi\u1ec7u qu\u1ea3 c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m vi\u1ec7c s\u1eed d\u1ee5ng n\u0103ng l\u01b0\u1ee3ng tr\u00ean to\u00e0n th\u1ebf gi\u1edbi. Tuy nhi\u00ean, c\u00e1c ph\u00e1t hi\u1ec7n m\u1edbi cho th\u1ea5y vi\u1ec7c s\u1eed d\u1ee5ng \u00e1nh s\u00e1ng nh\u00e2n t\u1ea1o thay v\u00e0o \u0111\u00f3 \u0111ang t\u0103ng l\u00ean, l\u00e0m t\u0103ng nhu c\u1ea7u s\u1eed d\u1ee5ng n\u0103ng l\u01b0\u1ee3ng.<\/p>\n

M\u1eb7c d\u00f9 \u0111\u00e8n LED ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p c\u1ee5 th\u1ec3, v\u00ed d\u1ee5 khi m\u1ed9t th\u00e0nh ph\u1ed1 chuy\u1ec3n to\u00e0n b\u1ed9 \u00e1nh s\u00e1ng \u0111\u01b0\u1eddng ph\u1ed1 t\u1eeb \u0111\u00e8n Natri sang \u0111\u00e8n LED, nh\u01b0ng khi quan s\u00e1t d\u1eef li\u1ec7u v\u00e0 c\u1ea5p \u0111\u1ed9 qu\u1ed1c gia v\u00e0 to\u00e0n c\u1ea7u, kho\u1ea3n ti\u1ebft ki\u1ec7m \u0111\u01b0\u1ee3c b\u00f9 \u0111\u1eafp b\u1eb1ng \u0111\u00e8n m\u1edbi ho\u1eb7c \u0111\u00e8n chi\u1ebfu s\u00e1ng h\u01a1n \u1edf nh\u1eefng n\u01a1i kh\u00e1c, Kyba nh\u1ea5n m\u1ea1nh.<\/p>\n

(TN&MT)<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Nhi\u1ec1u n\u01a1i tr\u00ean th\u1ebf gi\u1edbi \u0111\u01b0\u1ee3c th\u1eafp s\u00e1ng h\u01a1n, nh\u01b0ng c\u00e1c nh\u00e0 khoa h\u1ecdc cho r\u1eb1ng \u0111\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 \u0111i\u1ec1u t\u1ed1t. Theo c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u, d\u1eef li\u1ec7u v\u1ec7 tinh ng\u00e0y 22\/11 cho th\u1ea5y b\u1ec1 m\u1eb7t ngo\u00e0i tr\u1eddi \u1edf Tr\u00e1i \u0111\u1ea5t \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng nh\u00e2n t\u1ea1o v\u00e0o ban \u0111\u00eam t\u0103ng kho\u1ea3ng 2% m\u1ed7i n\u0103m […]<\/p>\n","protected":false},"author":18,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-7848","post","type-post","status-publish","format-standard","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/7848","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/users\/18"}],"replies":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/comments?post=7848"}],"version-history":[{"count":1,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/7848\/revisions"}],"predecessor-version":[{"id":7849,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/7848\/revisions\/7849"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=7848"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=7848"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=7848"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}