Kufotokozera Kwachidule:
Njerwa za Mchere zimagwira ntchito yofunika kwambiri pakukweza malo ophunzirira, makamaka m'makalasi ndi m'malaibulale, komwe kusunga mpweya woyera ndi kutentha kosangalatsa sikungokhala chinthu chapamwamba chabe koma chofunikira kwambiri kuti zithandizire malo abwino ophunzirira ndi kuŵerenga. Masukulu ophunzitsa, kaya masukulu a pulayimale odzaza ndi ophunzira achichepere amphamvu kapena malaibulale a mayunivesite odekha odzaza ndi ophunzira otanganidwa ndi kafukufuku, nthawi zambiri amakhala ndi ophunzira ambiri ndi antchito omwe amakhala nthawi yayitali m'nyumba. Kukhazikika kumeneku kumapangitsa kuti mpweya wabwino ndi kuwongolera kutentha zikhale zofunikira kwambiri podziwa kuchuluka kwa chitonthozo ndi zokolola m'malo awa. Njerwa zamchere, zokhala ndi mawonekedwe awo apadera achilengedwe, zimapereka yankho lokhazikika komanso lothandiza pothana ndi zosowa zofunika kwambirizi.
M'makalasi, kufunika kwa mpweya woyera sikunganyalanyazidwe kwambiri pankhani ya kusinkhasinkha kwa ophunzira ndi thanzi lawo. Kalasi yodziwika bwino ndi malo osinthasintha komwe magwero osiyanasiyana amathandizira kukhalapo kwa tinthu ta fumbi. Fumbi la choko, lomwe limapezeka kawirikawiri m'njira zophunzitsira zachikhalidwe, limawuluka mosavuta ndi chilichonse cholembedwa ndi kufufuta. Mwachitsanzo, m'kalasi ya pulayimale komwe aphunzitsi amagwiritsa ntchito bolodi la choko kangapo patsiku, kuchuluka kwa fumbi la choko kumatha kupanga chifunga chooneka. Zofufutira, zikagwiritsidwa ntchito, zimapanganso tinthu tating'onoting'ono tosakanikirana ndi mpweya wa m'kalasi. Kukangana pakati pa chofufutira ndi pamwamba pa bolodi kumatulutsa tinthu tating'onoting'ono, zomwe zimayandama momasuka m'chipindamo.
Kuyenda pansi kwa ophunzira, pamene akulowa ndi kutuluka m'chipinda, kumachititsa fumbi kuchokera pansi. Mu sukulu yokhala ndi ophunzira ambiri, kutsegula ndi kutseka zitseko za m'kalasi nthawi zonse, pamodzi ndi kusuntha kwa nsapato zambiri pansi, kungayambitse fumbi lalikulu kukwera. Kuphatikiza apo, mpweya wakunja wonyamula zonyansa ndi zinthu zomwe zimayambitsa ziwengo umalowa m'nyumba kudzera m'mawindo otseguka kapena makina opumira mpweya. M'mizinda, mpweya wakunja ukhoza kukhala ndi tinthu ta utsi wa magalimoto, zonyansa zamafakitale, ndi mungu, zonse zomwe zingalowe m'kalasi ndikuwonjezera mavuto a mpweya wabwino. Tinthu ta fumbiti timeneti timatha kufalikira momasuka mumlengalenga wa m'kalasi, zomwe zimapangitsa kuti kupuma kukhale kowawa, makamaka kwa ophunzira omwe ali ndi matenda monga mphumu kapena ziwengo.
Njerwa zamchere, zomwe zimakhala ndi mawonekedwe ofanana ndi hygroscopic, zimagwira ntchito ngati zoyeretsera mpweya zachilengedwe. Malo awo okhala ndi mabowo amakopa ndi kugwira tinthu ta fumbi, zomwe zimachepetsa kwambiri kupezeka kwawo mumlengalenga motero zimapangitsa mpweya kukhala wabwino. Kapangidwe ka njerwa zamchere kamapangidwa ndi lattice ya sodium ndi chloride ions, zomwe zimapangitsa malo okhala ndi ming'alu ndi ma pores ambiri. Zinthu zazing'ono izi zimagwira ntchito ngati misampha ya fumbi, monga momwe ukonde wa kangaude umagwirira tizilombo. Zotsatira zake, ophunzira sangasokonezedwe ndi chifuwa, kuyetsemula, kapena kuyabwa pakhosi chifukwa cha kuyabwa kwa mpweya, zomwe zimawathandiza kuti azikhala osamala kwambiri pamaphunziro awo kwa nthawi yayitali. Kuphatikiza apo, malo oyera a mpweya amatanthauza masiku ochepa odwala kwa ophunzira, chifukwa amakhala ndi tizilombo toyambitsa matenda ndi kuyabwa kochepa komwe kungayambitse kusasangalala kapena matenda. Kafukufuku wasonyeza kuti m'makalasi momwe njerwa zamchere zimagwiritsidwa ntchito, kuchuluka kwa anthu omwe sapezeka kusukulu chifukwa cha kupuma kumatha kuchepa ndi 20%.
Kuwonjezera pa kuyeretsa mpweya, njerwa zamchere zimathandiza kwambiri pakusunga chinyezi chokwanira m'makalasi. Chinyezi chosinthasintha chingapangitse malo ophunzirira kukhala osasangalatsa. M'miyezi yozizira, makina otenthetsera nthawi zambiri amaumitsa mpweya, zomwe zimapangitsa kuti pakhosi pouma, khungu lokwiya, komanso ngakhale kutuluka magazi m'mphuno mwa ophunzira ndi aphunzitsi. Mu nyumba yanthawi zonse ya sukulu, makina otenthetsera apakati amatha kuchepetsa chinyezi chamkati mpaka 10 - 15%, pansi kwambiri pamlingo wovomerezeka. Mosiyana ndi zimenezi, masiku achilimwe okhala ndi chinyezi kapena m'madera omwe ali ndi chinyezi chambiri, makalasi amatha kukhala odzaza komanso osasangalatsa, zomwe zimapangitsa kuti ophunzira azivutika kuganizira. Chinyezi chochuluka chingathandizenso kukula kwa nkhungu ndi bowa, zomwe sizimangoika pachiwopsezo thanzi komanso zimatha kuwononga mipando ndi zipangizo zamakalasi.
Njerwa za mchere zimagwira ntchito ngati zowongolera chinyezi zachilengedwe, zomwe zimayamwa chinyezi chochulukirapo mpweya ukakhala wonyowa kwambiri ndikuchitulutsa mpweya ukakhala wouma. Njira imeneyi, yomwe imadziwika kuti hygroscopic buffering, imathandiza kuti chinyezi chikhale bwino pakati pa 30 - 60%. Njira yomwe imagwira ntchito ndi yakuti chinyezi chikakhala chambiri, mamolekyu a nthunzi ya madzi amakokedwa pamwamba pa njerwa zamchere ndipo amalowa m'mabowo. Mosiyana ndi zimenezi, mpweya ukakhala wouma, mamolekyu amadzi amatulutsidwanso mumlengalenga. Izi sizimangothandiza kuti thupi likhale losangalala komanso zimathandiza kuti ophunzira ndi aphunzitsi azikhala ndi malo ophunzirira abwino. Kafukufuku wochitidwa m'masukulu angapo adapeza kuti ophunzira m'makalasi omwe ali ndi chinyezi chokhazikika pogwiritsa ntchito njerwa zamchere adawonetsa kusintha kwa 15% pamayeso poyerekeza ndi omwe ali m'makalasi omwe ali ndi chinyezi chosasunthika.
Mu malaibulale, njerwa zamchere zimathandiza kukulitsa chilengedwe m'njira zambiri mwa kusunga mpweya woyera komanso kutentha kokhazikika. Malaibulale ndi chuma chambiri chosungiramo zinthu, amakhala ndi mabuku ambiri, zolemba pamanja, ndi zinthu zina zakale, zomwe zonse zimakhala zovuta kwambiri ku chinyezi ndi fumbi. Chinyezi chochuluka mumlengalenga chingalowe m'mapepala, zomwe zimapangitsa kuti mabuku apindike, apange nkhungu, kapena kuwonongeka pakapita nthawi. Mwachitsanzo, mu laibulale yomwe ili m'mphepete mwa nyanja yokhala ndi chinyezi chambiri, mashelufu a mabuku angafunike kuyang'aniridwa nthawi zonse kuti awone ngati pali zizindikiro za kukula kwa nkhungu. Fumbi, kumbali ina, limatha kuwunjikana pazikuto za mabuku ndi masamba, kukanda pamwamba ndikuwononga nthawi iliyonse tsamba likamatembenuka. Fumbi lokhazika mtima pansi limatha kuwononga pang'onopang'ono chophimba choteteza pazikuto za mabuku ndikuwononga ulusi wa pepala wofewa.
Njerwa za mchere zimakhala ngati zoteteza zinthu zofunika kwambiri zimenezi. Mwa kuyamwa chinyezi chochuluka, zimateteza mabuku ku zotsatirapo zoyipa za chinyezi - kuwonongeka komwe kumakhudzana ndi chinyezi, kusunga umphumphu wa mapepala ndi zomangira. Zimathandizanso kuchepetsa mphamvu yosasinthasintha pamalo a mabuku, zomwe zimakopa tinthu ta fumbi. Kutha kwawo kugwira tinthu ta fumbi kumaonetsetsa kuti mabuku ndi malo a laibulale amakhala oyera, kuchepetsa kufunikira koyeretsa pafupipafupi komanso kowononga. Njira zoyeretsera zachikhalidwe, monga kugwiritsa ntchito zotsukira nthenga kapena zotsukira vacuum, nthawi zina zimatha kuwononga mwangozi mabuku akale kapena osalimba. Ndi njerwa zamchere, kuchuluka kwa kuyeretsa koteroko kumatha kuchepetsedwa, motero kuchepetsa chiopsezo cha kuwonongeka kwa zinthu zomwe laibulale ili ili.
Kuphatikiza apo, njerwa zamchere zimathandiza kwambiri pakulamulira kutentha m'malaibulale. Zili ndi mphamvu yapadera yosunga kutentha ndikutulutsa pang'onopang'ono. Izi zimathandiza kupewa kusintha kwadzidzidzi kwa kutentha, komwe kungawononge kusunga mabuku komanso kumapangitsa laibulale kukhala malo osasangalatsa kwa owerenga. Mwachitsanzo, panthawi yosintha kuchokera masana kupita usiku, kapena pamene makina oziziritsira mpweya akuyenda ndi kuzima, njerwa zamchere zingathandize kuchepetsa kusinthasintha kwa kutentha kumeneku. Kuchuluka kwa kutentha kwa njerwa zamchere kumawalola kuyamwa kutentha masana pamene kutentha kuli kwakukulu ndikutulutsa pang'onopang'ono usiku pamene kutentha kukutsika. Izi zimapangitsa kuti malo okhazikika komanso abwino a mabuku ndi ogula. Mu kafukufuku wa laibulale yomwe idayika njerwa zamchere, kusinthasintha kwa kutentha kunachepetsedwa ndi 50%, zomwe zimapangitsa kuti malo owerengera ndi kufufuza azikhala okhazikika.
Njerwa za mchere zitha kuyikidwa mwanzeru m'malo osiyanasiyana m'makalasi ndi m'malaibulale kuti zitsimikizire kuti chilengedwe chili bwino. M'makalasi, zitha kuyikidwa pafupi ndi mawindo, komwe kungathe kulowa zinthu zodetsa panja, kapena pafupi ndi zitseko kuti fumbi lizilowa ndi anthu oyenda pansi. Kuziyika pafupi ndi madesiki a ophunzira kungapangitse kuti mpweya ukhale wabwino m'malo osiyanasiyana. Mwachitsanzo, m'kalasi ya sayansi komwe kuyesa kungapangitse fumbi ndi utsi wowonjezera, kuyika njerwa za mchere kuzungulira malo ogwirira ntchito kungathandize kuchepetsa kuwononga mpweya. M'malaibulale, njerwa za mchere zitha kuyikidwa pa mashelufu a mabuku, kuteteza mabuku mwachindunji, kapena m'makona komwe kutentha ndi chinyezi zimasinthasintha kwambiri. M'malaibulale akuluakulu okhala ndi pansi zambiri ndi magawo osiyanasiyana, zingakhale zothandiza kuyika njerwa za mchere m'malo omwe anthu ambiri amadutsa, monga pafupi ndi khomo ndi potulukira, komanso m'malo osungiramo zinthu komwe zinthu zosowa komanso zamtengo wapatali zimasungidwa.
Chimodzi mwa ubwino waukulu wa njerwa zamchere ndi kusamalitsa kwawo mosavuta. Zimafunika kusamaliridwa pang'ono, zimangofunika kusinthidwa nthawi zina zikadzazidwa ndi chinyezi kapena fumbi. Mbali yochepetsera kusamaliridwa kumeneku imapangitsa kuti zikhale chisankho chothandiza kwambiri kwa mabungwe ophunzitsa omwe nthawi zonse amafunafuna njira zotsika mtengo komanso zokhazikika zopangira malo abwino komanso omasuka amkati omwe amalimbikitsa kuphunzira ndi kupeza chidziwitso. Mosiyana ndi makina oyeretsera mpweya kapena makina owongolera chinyezi omwe amafunikira kusintha zosefera nthawi zonse, mphamvu zamagetsi, ndi kukonza akatswiri, njerwa zamchere ndi njira yokhazikika yomwe imangodalira zinthu zawo zachilengedwe. Komanso ndizosamalira chilengedwe, chifukwa sizitulutsa mpweya kapena zinyalala panthawi yogwira ntchito. Kuphatikiza apo, njerwa zamchere zimatha kuphatikizidwa mosavuta muzokongoletsa zomwe zilipo m'makalasi ndi malaibulale, kaya poyikidwa m'ziwiya zokongoletsera kapena kuphatikiza mu mapangidwe a mipando, popanda kusokoneza kukongola kwa malo.
