M\u1ecdi ng\u01b0\u1eddi \u0111\u1ec1u bi\u1ebft, c\u00e1c \u00f4 t\u00f4 m\u00e0 ch\u00fang ta th\u1ea5y tr\u00ean \u0111\u01b0\u1eddng c\u00e1i, h\u1ea7u nh\u01b0 \u0111\u1ec1u ch\u1ec9 d\u00f9ng ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng b\u1eb1ng x\u0103ng ho\u1eb7c d\u1ea7u \u0111i\u00eazen. Tuy nhi\u00ean, c\u00e1c ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng \u1ea5y kh\u00f4ng th\u1ec3 ch\u00e1y ho\u00e0n to\u00e0n trong \u0111\u1ed9ng c\u01a1 \u0111\u1ed1t trong, do \u0111\u00f3 s\u1ebd x\u1ea3 ra m\u1ed9t l\u01b0\u1ee3ng kh\u00ed th\u1ea3i nh\u1ea5t \u0111\u1ecbnh, g\u00e2y \u00f4 nhi\u1ec5m v\u1edbi m\u00f4i tr\u01b0\u1eddng, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ee9c kho\u1ebb con ng\u01b0\u1eddi.<\/p>\n\n\n\n
\u0110i \u0111\u00f4i v\u1edbi s\u1ed1 l\u01b0\u1ee3ng \u00f4 t\u00f4 ng\u00e0y c\u00e0ng nhi\u1ec1u, t\u00ecnh tr\u1ea1ng \u00f4 nhi\u1ec5m kh\u00f4ng kh\u00ed c\u0169ng tr\u1edf n\u00ean ng\u00e0y c\u00e0ng nghi\u00eam tr\u1ecdng, c\u00e1c nh\u00e0 khoa h\u1ecdc b\u1eaft \u0111\u1ea7u t\u00ecm ki\u1ebfm ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng m\u1edbi cho \u00f4 t\u00f4.<\/p>\n\n\n\n
Cu\u1ed1i n\u0103m 1997, c\u00e1c nh\u00e0 khoa h\u1ecdc M\u1ef9 \u0111\u00e3 ch\u1ebf t\u1ea1o ra m\u1ed9t chi\u1ebfc \u00f4 t\u00f4 ki\u1ec3u m\u1edbi l\u1ea5y nit\u01a1 l\u1ecfng l\u00e0m \u0111\u1ed9ng l\u1ef1c. S\u1ef1 d\u1eabn \u0111\u1ed9ng c\u1ee7a lo\u1ea1i \u00f4 t\u00f4 n\u00e0y \u0111\u01b0\u1ee3c ph\u00e1t \u0111\u1ed9ng b\u1eb1ng nit\u01a1 l\u1ecfng m\u00e0 nit\u01a1 l\u1ecfng th\u00ec do m\u1ed9t b\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t cung c\u1ea5p. Khi kh\u00f4ng kh\u00ed c\u00f3 nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n t\u1eeb b\u00ean ngo\u00e0i ch\u1ea1y v\u00e0o b\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t, th\u00ec s\u1ebd l\u00e0m cho nit\u01a1 l\u1ecfng bi\u1ebfn th\u00e0nh ch\u1ea5t kh\u00ed, l\u1ea1i do ch\u1ea5t kh\u00ed \u0111\u00f3 k\u00e9o c\u00e1nh g\u1ea1t l\u00e0m cho \u0111\u1ed9ng c\u01a1 \u00f4 t\u00f4 quay. T\u00f3m l\u1ea1i, nguy\u00ean l\u00fd c\u01a1 b\u1ea3n c\u1ee7a n\u00f3 l\u00e0 cho nit\u01a1 l\u1ecfng b\u1ed1c h\u01a1i, khi\u1ebfn ch\u1ea5t kh\u00ed n\u1edf ra, v\u00ec v\u1eady m\u00e0 c\u00f3 ng\u01b0\u1eddi g\u1ecdi \u00f4 t\u00f4 ch\u1ea1y b\u1eb1ng nit\u01a1 l\u1ecfng l\u00e0 “\u0111\u1ea7u m\u00e1y h\u01a1i n\u01b0\u1edbc kh\u00f4ng c\u00f3 m\u00e1y h\u01a1i n\u01b0\u1edbc”.<\/p>\n\n\n\n
\u00d4 t\u00f4 ch\u1ea1y b\u1eb1ng nit\u01a1 l\u1ecfng so v\u1edbi \u00f4 t\u00f4 th\u00f4ng th\u01b0\u1eddng c\u00f3 nh\u1eefng \u0111i\u1ec3m \u01b0u vi\u1ec7t n\u00e0o?<\/p>\n\n\n\n
\u0110i\u1ec1u quan tr\u1ecdng nh\u1ea5t l\u00e0 lo\u1ea1i \u00f4 t\u00f4 n\u00e0y c\u00f3 l\u1ee3i h\u01a1n cho vi\u1ec7c b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng. V\u00ec d\u00f9ng nit\u01a1 l\u1ecfng \u0111\u1ec3 l\u00e0m ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng n\u00ean kh\u00ed th\u1ea3i duy nh\u1ea5t c\u1ee7a \u00f4 t\u00f4 l\u00e0 nit\u01a1, m\u00e0 trong b\u1ea7u kh\u00f4ng kh\u00ed chung quanh ta c\u00f3 ch\u1eebng 80% l\u00e0 nit\u01a1, v\u00ec v\u1eady n\u00f3 kh\u00f4ng th\u1ec3 l\u00e0m t\u1ed5n h\u1ea1i \u0111\u1ebfn c\u01a1 th\u1ec3 con ng\u01b0\u1eddi.<\/p>\n\n\n\n
Ngo\u00e0i ra, \u00f4 t\u00f4 l\u1ea5y nit\u01a1 l\u1ecfng l\u00e0m \u0111\u1ed9ng l\u1ef1c, th\u00ec d\u00f9 c\u00f3 g\u1eb7p s\u1ef1 c\u1ed1 giao th\u00f4ng, m\u1ee9c \u0111\u1ed9 nguy hi\u1ec3m c\u0169ng gi\u1ea3m nhi\u1ec1u so v\u1edbi \u00f4 t\u00f4 th\u00f4ng th\u01b0\u1eddng, b\u1edfi v\u00ec nhi\u00ean li\u1ec7u c\u1ee7a n\u00f3 l\u00e0 nit\u01a1 l\u1ecfng, kh\u00ed tr\u00e0n ra kh\u1ecfi “th\u00f9ng d\u1ea7u” s\u1ebd l\u1eadp t\u1ee9c bay h\u01a1i trong kh\u00f4ng kh\u00ed, kh\u00f4ng th\u1ec3 g\u00e2y n\u00ean c\u00e1c t\u00ecnh hu\u1ed1ng \u0111\u00e1ng s\u1ee3 nh\u01b0 ch\u00e1y, n\u1ed5 v.v.<\/p>\n\n\n\n
T\u1eeb kho\u00e1: Nit\u01a1 l\u1ecfng; N\u0103ng l\u01b0\u1ee3ng \u00f4t\u00f4<\/p>\n","protected":false},"excerpt":{"rendered":"
M\u1ecdi ng\u01b0\u1eddi \u0111\u1ec1u bi\u1ebft, c\u00e1c \u00f4 t\u00f4 m\u00e0 ch\u00fang ta th\u1ea5y tr\u00ean \u0111\u01b0\u1eddng c\u00e1i, h\u1ea7u nh\u01b0 \u0111\u1ec1u ch\u1ec9 d\u00f9ng ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng b\u1eb1ng x\u0103ng ho\u1eb7c d\u1ea7u \u0111i\u00eazen. Tuy nhi\u00ean, c\u00e1c ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng \u1ea5y kh\u00f4ng th\u1ec3 ch\u00e1y ho\u00e0n to\u00e0n trong \u0111\u1ed9ng c\u01a1 \u0111\u1ed1t trong, do \u0111\u00f3 s\u1ebd x\u1ea3 ra m\u1ed9t l\u01b0\u1ee3ng kh\u00ed th\u1ea3i nh\u1ea5t \u0111\u1ecbnh, […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[15,16],"tags":[],"class_list":["post-8832","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-ky-thuat"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/8832","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=8832"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/8832\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=8832"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=8832"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=8832"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}