Ihe Ohiri isi olu

Ụfụ Nchekwa na-ekpo ọkụ
Emepụtara ụfụfụ ebe nchekwa na-ekpo ọkụ na 1960 site n'aka Healthman, onye enyemaka nke NASA. Ọ na-egosipụta nhazi sel mepere emepe{2} ma nwee njirimara nke enyemaka nrụgide na-emetụ ọkụ, na-eme ka ọ bụrụ nrụgide na-emetụ ọkụ{3}} ihe na-ebelata ihe. Onye ahụike ji ihe a mee ihe na ụgbọ elu. Emebere ya iji belata nchekasị na ndị na-enyocha mbara igwe ma chebe ọkpụkpụ azụ ha, karịsịa n'oge nlọghachi na ọpụpụ na ụgbọ elu mbara igwe, mgbe nrụgide dị na ndị astronauts kacha dị egwu ma dị ize ndụ. Emepụtara ihe a iji chebe nchekwa ndị na-agụ kpakpando. Na mmalite 1990s, ụlọ ọrụ Swedish Fagerdala rụgharịrị ya maka iji ndị nkịtị (ọgwụ) eme ihe, na mbụ nweta nnabata zuru oke na nlekọta ahụike mberede na usoro nlekota oru. O wee nweta ewu ewu ngwa ngwa na mba ndị mepere emepe, ọkachasị ahụike{10}} mba dị ka Japan.

Na-akpụ akpụ
Nke a emelitere ohiri isi U{0}, nke ejiri PVC mee, na-enye nkwado dị nro nke ohiri isi U{1} nwere uru agbakwunyere nke ibugharị na nchekwa dị mfe. Ọ bụ nhọrọ a ma ama maka njem, ịnya ụgbọ ala, ụlọ ọrụ, na klaasị. Otú ọ dị, n'ihi na PVC bụ ihe siri ike, a na-agbakwụnyekarị plasticizers n'oge usoro mmepụta iji mee ka ọ dị nro. Ihe PVC nkịtị, nke a makwaara dị ka phthalates, nwere ike ịnwe 20% ruo 60% phthalates. Mmetụta ọjọọ nke phthalates bụ: n'ime mmadụ na anụmanụ, phthalates na-eme ka estrogen, na-amụba ohere nke ọrịa ara ara na ụmụ nwanyị ma na-emerụ usoro ọmụmụ nke ụmụ nwoke n'ọdịnihu, na mmetụta ahụike na-apụta ìhè maka ụmụaka. Ọzọkwa, iji adhesives eme ihe mgbe ị na-etinye ìgwè atụrụ ahụ n'elu PVC na-abawanye nsi nke ngwaahịa ahụ.

Ọdịdị oyiri{{0} okpukpu abụọ

N'ihi enweghị ike ịsacha PVC, ohiri isi U{1} na-eweta ihe ịma aka nhicha. A na-atụfukarị ha mgbe ụfọdụ ejiri ya mee ihe, na-ebelata ndụ ha. Ọzọkwa, nnukwu ihe PVC a tụfuru atụfu na-enye aka na mmetọ gburugburu ebe obibi. Ya mere, ihe owuwu okpukpu abụọ-ọkwa oyi- ihe mkpuchi dị n'ime + apụtala n'ahịa. The U{10}ọgwụgwọ magnetik therapy ahụike U{11}}ohiri isi bụ ihe atụ ama ama. Ọ na-eji eriri dị n'ime inflatable nke ihe eji eme gburugburu ebe obibi na ahụike, na-enweghị ihe egwu ahụike jikọtara ya na PVC ọkọlọtọ. N'otu oge ahụ, n'ihi na mkpuchi nke mpụta ya bụ nke velvet dị nro, ọ na-adị nro ma dị mma karị, na ejiji ejiji yiri ụfụfụ ebe nchekwa.