Kwiinduli eziqengqelekayo zaseCrestview Valley, ifama eyayiphethwe lusapho ebizwa ngokuba yiGreen Pastures yachuma phantsi kwezandla zomlimi omdala, uDavid Thompson, kunye nentombi yakhe, uEmily. Babelima izityalo ezichumayo zombona, iimbotyi zesoya, kunye neentlobo ngeentlobo zemifuno, kodwa njengabalimi abaninzi, babesokola nxamnye namandla endalo angaqikelekanga. Izinambuzane, imbalela, kunye nemozulu engaqikelekanga yayiziingxaki ababejongene nazo rhoqo. Nangona kunjalo, yayilumgangatho wobonelelo lwamanzi ababenawo owawubakhathaza kakhulu.
ICrestview Valley yayilikhaya ledama elizolileyo elityalwa ngumlanjana omncinci, owawungumthombo wobomi kumadlelo aluhlaza. Ukuze kugcinwe impilo yezityalo zabo, uDavid wayesazi ukuba ukugcina umgangatho wamanzi uphezulu kwakubalulekile, kodwa wayengenayo indlela ethembekileyo yokulinganisa amanqanaba eoksijini enyibilikileyo edamini. Iityhefu ezivela kumasimi angqongileyo kunye nemiphumo yotshintsho lwemozulu zazisongela amanzi abo, nto leyo eyayichaphazela ngokuthe ngqo isivuno sabo. Ekhathazekile kwaye exhalabile ngempilo yezityalo zabo, uDavid wayedla ngokuchitha iiyure ezama ukujonga umgangatho wamanzi ngokuqikelela.
Ngenye intsasa enelanga, uEmily weza ebaleka enyuka intaba, uvuyo luphuma ebusweni bakhe. “Tata, ndivile ngezi sensors zintsha zeoksijini ezinyibilikisiweyo! Zifanele ukuba zitshintshe umdlalo kubalimi abafana nathi!”
Enomdla kodwa ethandabuza, uDavid wamamela uEmily njengoko wayechaza indlela ezisebenza ngayo ezi sensor. Ngokungafaniyo novavanyo lwekhemikhali oluqhelekileyo olunika iziphumo ezibambezelekileyo kunye nobuchule obufunekayo, ii sensor zeoksijini ezinyibilikisiweyo ezibonakalayo zibonelela ngokufundwa kwangoko nangokuqhubekayo. Basebenzise ubuchwepheshe obuphambili ukulinganisa ukukhanya okufunxwa ziimolekyuli zeoksijini emanzini, benika abalimi idatha yexesha langempela malunga nomgangatho wamanzi abo. Bekhuthazwe lolu lwazi, bagqiba ekubeni batyale imali kwi sensor.
Ukufunyanwa Kotshintsho
Njengoko i-optical dissolved oxygen sensor ifakwe kufutshane nedama, uEmily wajonga idatha kwifowuni yakhe. Ngosuku lokuqala, bafumanisa ukuba amanqanaba eoksijini edissolved ayephantsi kunoko bekulindelwe. Bexhotyiswe ngolu lwazi, uEmily noDavid bathatha amanyathelo ngokukhawuleza, bongeza ii-aerator edama. Kwiintsuku ezimbalwa, i-sensor yabonisa ukunyuka kwamanqanaba eoksijini.
Njengoko babejonga amanzi kwiiveki ezilandelayo, i-sensor yabanceda ukuba bachonge iipateni kunye notshintsho lwexesha lonyaka. Ekupheleni kwehlobo, xa amanzi eqala ukufudumala, baqaphela ukwehla kweoksijini enyibilikayo. Oku kwabashukumisela ukuba basebenzise izityalo zomthunzi ezijikeleze ichibi ukuze zipholise amanzi, bedala indawo yokuhlala enempilo yezilwanyana zasemanzini kwaye baqinisekise ukuba izityalo zabo zifumana umgangatho wamanzi owaneleyo.
Isivuno Esininzi
Iingenelo zokwenyani zesensor zabonakala ngexesha lokuvuna. Izityalo zachuma ngendlela engazange ibonwe ngaphambili, kunye nemifuno eluhlaza emi ide emva kwentlambo. UDavid noEmily bavuna isivuno sabo esihle kakhulu kwiminyaka emininzi—umbona oqinileyo, onempilo kunye nemifuno ephilayo eyabangela uvuyo kwimarike yabalimi basekuhlaleni. Abalimi abavela kumasimi akufutshane beza kubo ukuze bafunde imfihlo yabo.
“Umgangatho wamanzi! Konke kuxhomekeke kwioksijini emanzini,” u-Emily ucacise ngokuzingca. “Ngesivamvo sethu seoksijini esinyibilikisiweyo se-optical, sinokusabela ngokukhawuleza kutshintsho. Kusincede sagcina inkqubo yendalo ichuma.”
Njengoko iindaba zisasazeka kulo lonke iCrestview Valley, abalimi abaninzi baqala ukwamkela obu buchwephesha. Uluntu lufumene inkqubo entsha yenkxaso apho babelane khona ngedatha kunye neendlela ezilungileyo. Badale uthungelwano olungekho sesikweni lokuxoxa ngomgangatho wamanzi kunye nempembelelo yawo engenakuphikiswa kwimpilo yezityalo. Babengasalwi nemingeni yabo bodwa; endaweni yoko, babeyinxalenye yentshukumo enkulu eya ekuzinzeni nasekuqineni.
Ikamva Elizinzileyo
Emva kweenyanga, njengoko amaxesha onyaka ayeguquka kwaye ifama ilungiselela ubusika, uDavid wacinga ngendlela eza kuhamba ngayo. I-optical dissolved oxygen sensor ayizange iguqule kuphela iindlela zabo zokulima kodwa yakha nonxibelelwano oluhlala ixesha elide kuluntu lwabo. Babengaphezulu nje kwabalimi ngoku; babengabaphathi bendalo, bezimisele ukukhusela amanzi abo, izityalo, nomhlaba abawuthandayo.
Ngeqhayiya, uDavid noEmily bahlanganisana elunxwemeni lwedama, bebukele ilanga litshona phezu kwamanzi aphilayo. Umoya wawuvutha yingxolo yendalo, kwaye izityalo zazimi ziqinile emasimini angasemva kwabo. Babesazi ukuba bathathe amanyathelo anentsingiselo ukuya kwikamva elizinzileyo—apho amanzi aphilileyo akhokelela kwizityalo ezisempilweni, eqinisekisa ukuba ifama yabo ihlala ixesha elide kwizizukulwana ezizayo.
Njengoko babemi kunye, uEmily wancuma kuyise, “Ngubani owayesazi ukuba inzwa encinci ingenza umahluko omkhulu kangaka?”
“Ngamanye amaxesha, ezona zisombululo zilula zinamandla amakhulu. Kufuneka nje sizimisele ukuzamkela,” waphendula uDavid, ejonge umhlaba ochumileyo ngethemba lekamva.
Ukuze ufumane ulwazi oluthe kratya malunga nesensa yomgangatho wamanzi,
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Ixesha leposi: Jan-22-2025