Chii urea? Rondedzera nyore oornag

Chii urea, uye chii ndiyo nhoroondo yaro mavambo? Sei zvichinzi atumidzwa, apo rinoshandiswa? Edza kunzwisisa.

History of kuwanikwa urea

Zvakaratidza kuti nemvura iye ane zvakananga ukama. Muna 1773, kemisiti French Hilaire Ruel Maren sarudza kubva weti kwevanhu. Gare gare, muna 1828, ari kemisiti German uye chiremba Fridrih Voler nokuda kwemvura kuti ichiputswa Ammonium cyanate (NH ₄ CNO) agamuchira kubva ane inorganic fuma ane makemikari remubatanidzwa nezvinotendwa maitiro urea kwakadaro. Ndizvo chete chiitiko ichi kunotanga nhoroondo makemikari kemisitiri, uyewo yokutanga makemikari remubatanidzwa inotengwa zvokugadzirwa nevanhu. Haasi wose zvinobva kwesainzi anozvikudza kuti buri racho ari sayenzi itsva.

Chii urea uye kwainobva

Kunyange zvakadaro, urea - chii? Izvi kwemakemikari remubatanidzwa iro rine hwakasimba marongerwo uye anopa kuputsanya chena kana zvakaneta mavara odorless crystalline granules. Formula urea - NH2CONH2. mamwe zita rayo - urea. The fuma iri nyore soluble mumvura. Mugumisiro urea yeimwe pamwe chicherwa acids, yakakwirira makemikari basa iri munyu.
On wokuti chii urea, kubva nemaonero pamusoro physiology muviri, unogona kupindurwa, ndiwo magumo chigadzirwa mapuroteni kugaya mune mhuka uye hove. The nokukanganisika Zvinoumba Ropa kunodiwa dzine urea. Kunonyanyisa urea wokuyera vana ropa kusvika makore 14 - 6.4 mmol / L, pamwe zera, zviri urea muropa ichiwedzerwa kusvika 7.5 mmol / l.

Preparation of urea kunoitika maindasitiri nzira chete carbon dioxide inobvisa uye amoniya usage maitiro Bazarova. Nokuda kwaizvozvi, kugadzirwa urea unobatanidzwa pakubudiswa nezvimwewo kwakavakirwa amoniya.

Sei urea

Uye chii urea ari indasitiri? Nokuti chii zvitarisirwa ayo synthesized? Mugore maindasitiri kugadzirwa Inogadzirwa nemasiridzi anobuda mumiti, adhesives akashandiswa zvaAtemisi faibha mapuranga uye midziyo indasitiri, achishandisa zviratidzo A. Urea Urea chete muchiso rinoshandiswa peturu indasitiri chokubvisa zvinhu kubva paraffinic anonhuwirira uye kubva mafuta. Izvi anosunungura nyoro Paraffin, zvakafanira pakuburitswa mapuroteni-vhitamini nzira, mafuta acids uye alcohols, siyana detergents.

Imwe nzvimbo kushandiswa urea - kusukwa oxides ose senitrogen achibuda utsi chafariz simba nembesa tsvina marara, bhaira uye zvichingodaro.

Chii urea mune zvokurapa indasitiri?

Urea chokuita osmotic diuretics pamwe slabodeystvuyuschim maturo. Ndiwo mbishi mashoko kugadzirwa kugadzirira outputting mvura kubva (kupera mvura mumuviri zvigadzirwa) dzemuviri. zvinodhaka izvi anodiwa kuti kurapa hydrocephalus, chepfungwa edema pamusoro etiologies siyana. Uyezve, urea rinoshandiswa nokuda kwezvifananidzo zvaAtemisi hypnotics.

Regai kurasikirwa mukana wako chinhano uye urea yaigadzira zvokudya. E927b zvokudya chirungiso - hazvina mumwe kupfuura urea. Zvinonzi inopupuma ehupfumi, anoita somunhu gudzazwi uye anonhuhwirira uhwiro nezvokudya. Rinoshandiswa zvaAtemisi kutsenga chingamu, kuvandudza upfu bhekari zvigadzirwa. Kana kuwedzera mbiriso mukanyiwa urea anoita somunhu inotonhorera svikiro uye senitrogen nokutengesa kuti mbiriso mutsika.

Asi chikuru chikamu urea munyika (wepagore kugadzirwa mamiriyoni 4 matani pagore pamusoro) anoenda kurima. Kugadzirwa kubva urea fetiraiza B giredhi urea senitrogen nokutengesa kunokosha, sezvo izvozvo - pfuurei 46%. Pasinei chokwadi kuti urea iri zvakakwana soluble nemvura, iye pachake absorbs mvura kwazvo nokuchema. Ichi maitiro akanaka kunokosha chaizvo uye anobvumira kuti vawanire kuti fetiraiza akawanda, pasina kutya kuti mumatanda slezhatsya uye dzikava kuchengetera ibwe. Urea ane refu reactivity ndobva chaizvo kunyura miti. Kazhinji, urea inoshandiswa preplant kurapwa maitikiro, boka ouswa guru zvinomera.