Tsis txhob rub, nuv lossis sib tsoo nrog lwm yam khoom thaum lub sijhawm ua haujlwm hnyav

Peb lub teb chaws cov hnab yas woven hnab yog tsuas yog xa tawm mus rau Nyiv thiab Kaus Lim Qab Teb, thiab tseem muaj zog tsim kev lag luam hauv Middle East, Africa, Tebchaws Asmeskas thiab Europe. Raws li kev tsim cov roj thiab cov cement, Middle East muaj kev xav tau zoo rau cov khoom ntim khoom ntim khoom; nyob rau hauv teb chaws Africa, yuav luag txhua lub xeev cov tuam txhab roj yog feem ntau koom nrog kev tsim cov khoom siv yas, thiab qhov kev thov rau cov hnab ntim khoom kuj zoo heev. Africa tuaj yeem lees txais qhov zoo thiab qib ntawm Tuam Tshoj lub thawv ntim khoom, yog li tsis muaj teeb meem loj hauv kev qhib kev lag luam hauv Africa. Tebchaws Asmeskas thiab Europe muaj cov kev xav tau siab heev rau qhov zoo ntawm cov thawv ntim khoom, thiab Tuam Tshoj lub thawv ntim khoom tsis tuaj yeem ua tau raws li lawv cov kev xav tau. Qhov zoo ntawm cov hnab ntim khoom yog qhov tseem ceeb heev. Yog li ntawd, kev lag luam thoob ntiaj teb muaj nws tus kheej cov qauv nruj rau cov khoom ntim ntim khoom. Lub hom phiaj ntawm cov qauv yog txawv. Nyiv ua tib zoo saib xyuas cov ntsiab lus, Australia them sai sai rau daim ntawv, thiab cov qauv EC tau saib xyuas cov khoom ntsuas kev ua tau zoo, uas yog qhov tseeb thiab meej. Tebchaws Asmeskas thiab Europe muaj cov kev cai nruj rau cov thawv ntim khoom raws li UV tsis kam, kev laus tiv thaiv, kev nyab xeeb, thiab lwm yam. "Safety factor" yog qhov sib piv ntawm qhov siab tshaj plaws ntawm cov khoom muaj peev xwm thiab cov qauv tsim qauv. Feem ntau, nws nyob ntawm seb puas muaj qhov txawv txav ntawm cov ntsiab lus thiab lub cev lub hnab, thiab seb qhov kev sib txuas puas puas thaum lub thawv ntim khoom ntim nrog ob peb zaug cov ntsiab lus thiab rov ua dua. Hauv cov qauv zoo sib xws hauv tsev thiab txawv teb chaws, qhov kev nyab xeeb feem ntau yog teem rau ntawm 5-6 zaug. Cov khoom ntim khoom ntim nrog tsib-fold kev nyab xeeb tuaj yeem siv tau ntev dua. Yog tias muaj cov tshuaj tiv thaiv ultraviolet ntxiv, lub hnab ntim khoom muaj ntau yam kev siv thiab kev sib tw muaj zog. Qhov no yog qhov tseeb indisputable. Thaum lub sling txuas nrog lub hnab lub cev, muaj ntau ntau yam xws li sab saum toj dai, hauv qab dai, sab dai, thiab lwm yam, thiab lawv txuas nrog sutures, yog li cov sutures kuj tseem ceeb heev. Tsuas yog tso siab rau lub zog siab ntawm lub sling, lub hauv paus ntaub thiab sutures tsis tuaj yeem ncav cuag ib lub zog, thiab tag nrho cov kev ua tau zoo ntawm lub thawv ntim tsis tuaj yeem ua kom ntseeg tau. Lub hnab ntim khoom feem ntau muaj cov khoom thaiv, granular lossis hmoov, thiab lub cev ntom ntom thiab xoob ntawm cov ntsiab lus kuj tseem muaj qhov sib txawv hauv cov txiaj ntsig tag nrho. Rau lub hauv paus rau kev txiav txim siab kev ua tau zoo ntawm lub thawv ntim khoom, nws yog ib qho tsim nyog yuav tsum siv cov khoom nyob ze rau cov neeg siv khoom thauj khoom ntau npaum li qhov ua tau rau kev sim. Qhov no yog "tus qauv muab tub lim rau kev sim" sau rau hauv tus qauv, thiab cov txheej txheem kev lag luam yuav tsum tau siv ntau li ntau tau kom tau raws li cov kev cov nyom ntawm kev lag luam kev lag luam.