Kuyini urea? Chaza elula futhi ezingabizi

Kuyini urea, futhi uyini umlando umsuka waso? Kungani it is kanjalo ngokungeyikho, lapho isetshenziswa? Zama ukuqonda.

History of the ukutholakala urea

It kuvela Piss enendawo okusobala. Ngo 1773, umthaki wemithi French Hilaire Ruel Maren ukhethe khona kusuka umchamo womuntu. Kamuva, ngo-1828, umthaki German nodokotela Fridrih Voler ukuhwamuka of ziyoncibilika ammonium cyanate (NH ₄ CNO) etholakele nemiyo wezinto i organic kwakwakhe, ngezici zalo urea ezinjalo. Kungenxa nalesi umcimbi uqala umlando yokuthakwa kwamakhemikhali organic, kanye kwakwakhe lokuqala organic etholwe synthetically. Akuwona wonke umkhiqizo ocwaningweni olwalwenziwe kungaba ozibongayo ukuthi ukuvulwa salo kwesayensi entsha.

Uyini urea futhi uvelaphi

Noma kunjalo, urea - kuyini? Le ngxube yamakhemikhali elinendawo isakhiwo esiqinile futhi presents kusakazeka omhlophe noma ezinemibala wavuma crystalline ayinaphunga granules. Formula urea - NH2CONH2. elinye igama layo - urea. Ingqikithi okubonakala kalula oncibilikayo emanzini. Umphumela urea compounds nge acid yezimbiwa, okusezingeni eliphezulu umsebenzi kumakhemikhali usawoti.
On umbuzo yini urea, kusukela umbono we physiology umzimba, zingaphendulwa, kuba umkhiqizo ekupheleni amaprotheni agayeke ezincelisayo nenhlanzi. I kwamakhemikhali yokwakheka igazi liyadingeka aqukethe urea. Ubuningi urea kuyinsakavukela igazi ezineminyaka engaba 14 - 6.4 mmol / l, ngeminyaka, okuqukethwe urea egazini luyanda 7.5 mmol / l.

Ukulungiselela we urea kwenzeka ngendlela ezimbonini nge-carbon dioxide futhi ammonia zamagama ukusabela Bazarova. Ngenxa yalokhu, ukukhiqizwa kwanoma urea kuhlanganiswa nama-ukukhiqizwa neminye imikhiqizo esekelwe ammonia.

Kungani urea

Futhi iyini urea embonini? Ukuze lokho Izinjongo zalo kwemiqondo? Esikhathini ukukhiqizwa yezimboni of inhlaka, inhlaka asetshenziswe ekukhiqizeni fibre amabhodi embonini ifenisha, usebenzisa izimpawu A. Urea Urea brand efanayo isetshenzisiwe umkhakha petroleum zokususa izinto kusukela amafutha paraffinic futhi kusukela nophethiloli. Lokhu kukhipha upharafini elithambile, kudingekile ekukhiqizeni amaprotheni-Vitamin izindlela, ama-fatty acid kanye alcohols, insipho nomjuluko ahlukahlukene.

Esinye isici esibangela isicelo urea - ukususwa oxides nitrogen ephuma intuthu ezishisayo izitshalo amandla izibi kabusha, kubhayela nokunye.

Kuyini urea embonini yezokwelapha?

Urea iphathelene isisu osmotic nge slabodeystvuyuschim umphumela. Kuyinto impahla eluhlaza womshini amalungiselelo outputting amanzi nomzimba womuntu (imikhiqizo amanzi emzimbeni). Le mithi kudingeka for ekwelapheni iphimbo, edema cerebral of etiologies ehlukahlukene. Ngaphezu kwalokho, urea isetshenziswa womshini hypnotics.

Ungaphuthelwa ithuba kwakho ukuhlanganyela futhi urea embonini yezokudla. E927b ukudla okufakiwe - ke akulutho ngaphandle urea. Kuye yesivini izakhiwo, uba-amplifier kanye imikhiqizo isithokela ukudla elimnandi. Asetshenziswa womshini ushingamu, ukuthuthukisa izinga kafulawa nesitolo imikhiqizo. Lapho wanezela kuya urea imvubelo inhlama izenzo njengendlela medium izakhi kanye nitrogen umhlinzeki amasiko nemvubelo.

Kodwa ingxenye enkulu ye urea kuleli zwe (ukukhiqizwa yonyaka ka 4 amathani ayizigidi ezingu ngonyaka) iya kwezolimo. Manufactured kusukela urea Umanyolo grade B urea nitrogen umphakeli ibalulekile, njengoba-ke - phezu nje 46%. Naphezu kweqiniso lokuthi urea kuyinto encibilikayo ngokuphelele emanzini, yena ubamba amanzi ngokungathandi kakhulu. Lesi sici esihle nalolu lubaluleke kakhulu futhi ikuvumela ukuba sithenge Umanyolo obuningi, ngaphandle kokwesaba ukuthi amasheya slezhatsya jikisa itshe USB. Urea has a reactivity okusezingeni eliphezulu futhi ngokukhulu ukushesha zimuncwe yizimila. Ngokuvamile, urea isetshenziswa preplant ukwelashwa izigaba, iqoqo mass oluhlaza izitshalo.