Yintoni urea? Chaza ezilula ezilula

Yintoni urea, yaye yintoni na ke imbali imvelaphi yayo? Nto ibizwa ngokuba kunjalo, apho kusetyenziswa khona? Zama ukuqonda.

Imbali ngexesha lokufunyanwa urea

Kubonakala ukuba piss ufumene ubudlelwane ngqo. Ngowe-1773, isazi semichiza French Hilaire Ruel Maren khetha kuyo umchamo yabantu. Kamva, ngowe-1828, lo usomachiza waseJamani nogqirha Fridrih Voler ngu komphunga yachithwa Ammonium cyanate (H. ₄ CNO) ezivela i iziyobisi ezingaphiliyo an organic ezimbaxa, ngeempawu zalo urea ezinjalo. Yiyo nale siganeko iqala imbali of chemistry zomgquba, kwakunye ezimbaxa yokuqala zomgquba ifunyenwe izithako. Ayizizo zonke imveliso yophando lwenzululwazi baqhayise emnyango walo kwesayensi entsha.

Yintoni na urea nalapho uvela

Sekunjalo, urea - ntoni na? Le compound imichiza ene-isakhiwo eqinileyo uneyona ukusasazeka granules crystalline esha ezimhlophe okanye abebala nguvumazonke. Formula urea - NH2CONH2. elinye igama layo - urea. Le nto ayikho lula enyibilikayo emanzini. Isiphumo iikhompawundi urea isakudityaniswa nee-asidi ezimbiwa, umsebenzi omkhulu imichiza yi netyuwa.
Ngomhla umbuzo wokuba yintoni na urea, ukususela kwinqanaba Ngenxa amalungu aloo mzimba mnye, unokuphendulwa, oko imveliso ekupheleni leeprothini ukwetyisa in ezincancisayo kunye nentlanzi. I ezinto Ukubunjwa igazi kufuneka luqulathe urea. Ubuninzi urea norm abantwana igazi ukuya kwiminyaka eli-14 - 6.4 mmol / l, kunye ubudala, isiqulatho urea egazini inyuswe ukuya 7.5 mmol / l.

Ukulungiswa urea lwenzeka ngendlela kwimizi icarbon dioxide kunye ammonia kuyondelelaniswe zisabela Bazarova. Ngenxa yoku, imveliso urea kudityaniswe ukuvelisa nezinye iimveliso esekelwe ammonia.

Kungani urea

Kwaye yintoni ke urea kweli shishini? Kuba yintoni iinjongo zayo ziya kuhlanganiswa? Xa imveliso woshishino nentlaka, yokuncamathelisa ezisetyenziswa xa kusenziwa iibhodi ifayibha kunye kushishino ifanitshala, besebenzisa amanqaku A. Urea Urea uhlobo efanayo isetyenziswa neshishini le- petroleum ngenxa yokubulala zingangeni oyile paraffinic kwaye ukusuka amafutha. Oku ukhupha iparafini ethambileyo, kuyimfuneko ekuvelisweni protein-vitamin kuthetha, okunamafutha acid kunye alkoholi, amabala ezahlukeneyo.

Enye indawo isicelo of urea - nokususwa oxides zenitrogen ephuma nomsi ezivela kwizityalo wamandla oshushu ukuze zirisayikilisheke inkunkuma, kwibhoyila njalo njalo.

Yintoni urea kushishino zonyango?

Urea inxulumene womchamo osmotic ukususela slabodeystvuyuschim. It is a ekrwada izinto lokuvelisa ngamalungiselelo kukukhupha amanzi emzimbeni womntu (iimveliso emzimbeni). La machiza ziyafuneka ukuze unyango lwe hydrocephalus, nokudumba ebuchotsheni of etiologies ezahlukeneyo. Ngaphezu koko, urea isetyenziselwa nokuveliswa hypnotics.

Ungaphoswa ithuba wakho ukuba bathathe inxaxheba yaye urea kwishishini kokutya. E927b additive ukutya - akunto enye ngaphezu urea. Kuye amagwebu mihlaba, wenza njengoko ngombhobho kwaye iimveliso zokutya flavoring enuka kamnandi. Ezisetyenziswayo xa kwenziwa imveliso ye ukuhlafuna itshungama, ukuphucula umgangatho umgubo kunye yokubhaka iimveliso. Xa elongeze urea intlama igwele lisebenza njengolwimi ngesondo umthengisi-nitrogen ngamasiko nagwele.

Kodwa inxalenye enkulu urea kweli lizwe (imveliso iitoni-4 million kunyaka ngamnye ngonyaka), uya kwezolimo. Ezenziwa urea isichumiso kwibakala B Umthengisi urea nitrogen kubalulekile, kuba oko - phezu nje 46%. Nangona isibakala sokuba urea enyibilikayo ngokugqibeleleyo emanzini, yona afunxa amanzi kabuhlungu kakhulu. Olu phawu HIV lubaluleke kakhulu kwaye ikuvumela ukuba bathenge isichumiso kukuninzi, ngaphandle koloyiko ukuba isitokhwe slezhatsya jikisa ilitye yokugcina. Urea has a reactivity eliphezulu kwaye lula kakhulu wendele zizityalo. Ngokubanzi, urea isetyenziswa ngokwezigaba unyango preplant, iseti ubunzima eluhlaza zezityalo.