Th\u00fa bi\u1ec3n bao g\u1ed3m r\u00e1i c\u00e1 bi\u1ec3n, b\u00e1o bi\u1ec3n, s\u01b0 t\u1eed bi\u1ec3n, c\u00e1 heo v\u00e0 c\u00e1 voi v.v.. Ch\u00fang c\u0169ng th\u1edf b\u1eb1ng ph\u1ed5i gi\u1ed1ng nh\u01b0 b\u00f2, ng\u1ef1a, d\u00ea s\u1ed1ng tr\u00ean c\u1ea1n v\u1eady. Tuy nhi\u00ean, ch\u00fang ph\u1ea3i th\u01b0\u1eddng xuy\u00ean nh\u00f4 l\u00ean kh\u1ecfi m\u1eb7t n\u01b0\u1edbc, nh\u01b0ng ch\u00fang c\u0169ng c\u00f3 th\u1ec3 \u1edf d\u01b0\u1edbi n\u01b0\u1edbc m\u1ed9t th\u1eddi gian t\u01b0\u01a1ng \u0111\u1ed1i d\u00e0i. V\u00ed d\u1ee5 th\u1eddi gian l\u1eb7n d\u00e0i nh\u1ea5t c\u1ee7a r\u00e1i c\u00e1 bi\u1ec3n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c 20 ~ 30 ph\u00fat, c\u1ee7a b\u00e1o bi\u1ec3n Wader c\u00f3 th\u1ec3 l\u1eb7n \u0111\u01b0\u1ee3c \u1edf d\u01b0\u1edbi n\u01b0\u1edbc s\u00e2u h\u01a1n 600 m, duy tr\u00ec l\u00e2u \u0111\u01b0\u1ee3c 43 ph\u00fat, c\u1ee7a lo\u1ea1i c\u00e1 voi c\u1ee1 l\u1edbn th\u1eadm ch\u00ed c\u00f3 th\u1ec3 l\u1eb7n \u0111\u01b0\u1ee3c 1 ~ 2 ti\u1ebfng d\u01b0\u1edbi n\u01b0\u1edbc.<\/p>\n\n\n\n
Th\u00fa bi\u1ec3n \u0111\u00e3 th\u1edf b\u1eb1ng ph\u1ed5i, t\u1ea1i sao \u1edf d\u01b0\u1edbi n\u01b0\u1edbc m\u1ed9t th\u1eddi gian d\u00e0i nh\u01b0 v\u1eady m\u00e0 kh\u00f4ng b\u1ecb ch\u1ebft ng\u1ea1t nh\u1ec9? C\u00e1c nh\u00e0 khoa h\u1ecdc ph\u00e1t hi\u1ec7n th\u1ea5y trong c\u01a1 th\u1ec3 c\u1ee7a th\u00fa bi\u1ec3n c\u00f3 “kho” t\u00edch tr\u1eef oxy \u0111\u1eb7c bi\u1ec7t. \u0110\u00f3 ch\u00ednh l\u00e0 m\u00e1u v\u00e0 c\u01a1 th\u1ecbt c\u1ee7a ch\u00fang r\u1ea5t \u0111\u1eb7c bi\u1ec7t.<\/p>\n\n\n\n
Ch\u00fang ta bi\u1ebft r\u1eb1ng, trong m\u00e1u c\u00f3 th\u1ec3 ch\u1ee9a m\u1ed9t l\u01b0\u1ee3ng l\u1edbn oxy v\u00e0 kh\u00ed \u0111ioxit cacbon, c\u00f2n t\u1ec9 l\u1ec7 m\u00e1u chi\u1ebfm trong th\u1ec3 tr\u1ecdng c\u1ee7a th\u00fa bi\u1ec3n th\u00f4ng th\u01b0\u1eddng nhi\u1ec1u h\u01a1n so v\u1edbi \u0111\u1ed9ng v\u1eadt s\u1ed1ng tr\u00ean c\u1ea1n. V\u00ed d\u1ee5 m\u00e1u c\u1ee7a ng\u01b0\u1eddi, th\u00f4ng th\u01b0\u1eddng chi\u1ebfm kho\u1ea3ng 7% th\u1ec3 tr\u1ecdng, c\u00f2n m\u00e1u c\u1ee7a c\u00e1 heo l\u1ea1i chi\u1ebfm kho\u1ea3ng 10% ~ 11% th\u1ec3 tr\u1ecdng, c\u00f2n th\u00fa bi\u1ec3n chi\u1ebfm kho\u1ea3ng 18%.<\/p>\n\n\n\n
Ngo\u00e0i m\u00e1u ra, c\u01a1 th\u1ecbt c\u0169ng c\u00f3 th\u1ec3 t\u00edch tr\u1eef oxy. Trong c\u01a1 th\u1ecbt c\u1ee7a th\u00fa bi\u1ec3n c\u00f3 m\u1ed9t lo\u1ea1i protein c\u01a1 h\u1ed3ng, r\u1ea5t d\u1ec5 k\u1ebft h\u1ee3p v\u1edbi oxy. Khi ch\u00fang nh\u00f4 l\u00ean kh\u1ecfi m\u1eb7t n\u01b0\u1edbc thay \u0111\u1ed5i kh\u00f4ng kh\u00ed, oxy \u0111\u01b0\u1ee3c h\u00edt v\u00e0o c\u00f3 m\u1ed9t ph\u1ea7n v\u1edbi protein c\u01a1 h\u1ed3ng h\u00ecnh th\u00e0nh tr\u1ea1ng th\u00e1i k\u1ebft h\u1ee3p ho\u00e1 h\u1ecdc, t\u00edch tr\u1eef trong c\u01a1 th\u1ecbt, cung c\u1ea5p cho ho\u1ea1t \u0111\u1ed9ng c\u01a1 th\u1ecbt b\u1ecb ti\u00eau hao. Protein c\u01a1 h\u1ed3ng n\u00e0y c\u00e0ng nhi\u1ec1u, th\u00ec oxi \u0111\u01b0\u1ee3c t\u00edch tr\u1eef c\u0169ng c\u00e0ng nhi\u1ec1u. Protein c\u01a1 h\u1ed3ng m\u00e0 \u0111\u01b0\u1ee3c ch\u1ee9a trong c\u01a1 th\u1ecbt c\u1ee7a th\u00fa bi\u1ec3n n\u00e0y ph\u1ea3i cao h\u01a1n nhi\u1ec1u so v\u1edbi \u0111\u1ed9ng v\u1eadt s\u1ed1ng tr\u00ean c\u1ea1n, oxy d\u1ef1 tr\u1eef c\u00f3 th\u1ec3 chi\u1ebfm 50% l\u01b0\u1ee3ng d\u1ef1 tr\u1eef oxy to\u00e0n th\u00e2n ch\u00fang. Ch\u00ednh v\u00ec protein c\u01a1 h\u1ed3ng trong c\u01a1 th\u1ecbt t\u01b0\u01a1ng \u0111\u1ed1i nhi\u1ec1u, n\u00ean m\u00e0u s\u1eafc c\u1ee7a th\u1ecbt c\u00e1 voi v\u00e0 th\u1ecbt th\u00fa bi\u1ec3n \u0111\u1ec1u c\u00f3 m\u00e0u t\u00edm th\u1eabm.<\/p>\n\n\n\n
Ngo\u00e0i ra, t\u1ea7n s\u1ed1 th\u1edf b\u00ecnh th\u01b0\u1eddng c\u1ee7a th\u00fa bi\u1ec3n tuy r\u1ea5t th\u1ea5p, nh\u01b0ng kh\u1ea3 n\u0103ng h\u00edt kh\u00ed oxy v\u00e0 n\u00e9n kh\u00ed \u0111ioxit cacbon l\u1ea1i r\u1ea5t cao. \u0110i\u1ec1u n\u00e0y c\u0169ng c\u00f3 l\u1ee3i \u0111\u1ed1i v\u1edbi cu\u1ed9c s\u1ed1ng d\u01b0\u1edbi n\u01b0\u1edbc c\u1ee7a ch\u00fang. Ng\u01b0\u1eddi b\u00ecnh th\u01b0\u1eddng m\u1ed9t l\u1ea7n th\u1edf ch\u1ec9 c\u00f3 th\u1ec3 thay \u0111\u1ed5i 15% – 20% kh\u00ed trong ph\u1ed5i c\u1ee7a h\u1ecd. C\u00f2n lo\u00e0i c\u00e1 voi l\u1ea1i c\u00f3 th\u1ec3 thay \u0111\u1ed5i tr\u00ean 80%. \u0110a s\u1ed1 \u0111\u1ed9ng v\u1eadt s\u1ed1ng tr\u00ean c\u1ea1n, k\u1ec3 c\u1ea3 ng\u01b0\u1eddi, r\u1ea5t nh\u1ea1y c\u1ea3m v\u1edbi \u0111i\u00f4x\u00edt cacbon trong m\u00e1u. N\u1ebfu h\u00e0m l\u01b0\u1ee3ng \u0111ioxit cacbon trong m\u00e1u t\u0103ng l\u00ean, th\u00ec t\u1ea7n su\u1ea5t th\u1edf c\u1ee7a ng\u01b0\u1eddi s\u1ebd t\u0103ng l\u00ean g\u1ea5p 5 l\u1ea7n b\u00ecnh th\u01b0\u1eddng. Nh\u01b0ng th\u00fa bi\u1ec3n l\u1ea1i kh\u00f4ng nh\u01b0 v\u1eady, m\u1eb7c d\u00f9 \u0111ioxit cacbon trong m\u00e1u t\u0103ng l\u00ean c\u0169ng s\u1ebd kh\u00f4ng x\u1ea3y ra s\u1ef1 c\u01b0\u1ee1ng ch\u1ebf th\u1edf. C\u00f3 ng\u01b0\u1eddi \u0111\u00e3 t\u1eebng th\u1eed nghi\u1ec7m, \u0111eo cho th\u00fa bi\u1ec3n m\u1ed9t m\u1eb7t n\u1ea1 h\u00f4 h\u1ea5p \u0111\u1eb7c bi\u1ec7t, \u0111\u1ec3 ch\u00fang h\u00f4 h\u1ea5p kh\u00ed c\u00f3 gi\u1edbi h\u1ea1n. Ng\u01b0\u1eddi ta \u0111\u00e3 ph\u00e1t hi\u1ec7n th\u1ea5y khi h\u00e0m l\u01b0\u1ee3ng \u0111ioxit cacbon trong \u0111\u00f3 cao \u0111\u1ebfn 10% th\u00ec ho\u1ea1t \u0111\u1ed9ng th\u1edf c\u1ee7a th\u00fa bi\u1ec3n v\u1eabn gi\u1eef \u0111\u01b0\u1ee3c b\u00ecnh th\u01b0\u1eddng. \u0110i\u1ec1u n\u00e0y \u0111\u00e3 gi\u00fap cho ch\u00fang s\u1ed1ng \u0111\u01b0\u1ee3c d\u01b0\u1edbi n\u01b0\u1edbc m\u1ed9t th\u1eddi gian t\u01b0\u01a1ng \u0111\u1ed1i d\u00e0i.<\/p>\n","protected":false},"excerpt":{"rendered":"
Th\u00fa bi\u1ec3n bao g\u1ed3m r\u00e1i c\u00e1 bi\u1ec3n, b\u00e1o bi\u1ec3n, s\u01b0 t\u1eed bi\u1ec3n, c\u00e1 heo v\u00e0 c\u00e1 voi v.v.. Ch\u00fang c\u0169ng th\u1edf b\u1eb1ng ph\u1ed5i gi\u1ed1ng nh\u01b0 b\u00f2, ng\u1ef1a, d\u00ea s\u1ed1ng tr\u00ean c\u1ea1n v\u1eady. Tuy nhi\u00ean, ch\u00fang ph\u1ea3i th\u01b0\u1eddng xuy\u00ean nh\u00f4 l\u00ean kh\u1ecfi m\u1eb7t n\u01b0\u1edbc, nh\u01b0ng ch\u00fang c\u0169ng c\u00f3 th\u1ec3 \u1edf d\u01b0\u1edbi n\u01b0\u1edbc m\u1ed9t th\u1eddi gian t\u01b0\u01a1ng […]<\/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":[15,10],"tags":[],"class_list":["post-8647","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-sinh-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/8647","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=8647"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/8647\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=8647"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=8647"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=8647"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}