Isakhamuzi saseDeltona uWhite siyazibuza ukuthi kungani idolobha lingazange libe nezingxoxo eziningi zomphakathi ngaphambi kokuthatha isinqumo sokumisa ukugaywa kabusha. Kuye, kwakubonakala sengathi idolobha “lalikulungele ukuyiyeka, ngokushesha futhi ngaphandle kwezingxoxo eziningi.”

Abakhi abaningi baye bathuthukisa imishini yabo yokushisela ye-TIG eminyakeni embalwa edlule, futhi abantu abaningi abazi ukuthi baqale kuphi ukwenza izilungiselelo emishinini yabo emisha ye-inverter yesimanje. Lesi sifundo esifushane kufanele sikwenze usheshe ngokushesha futhi kalula.

Sitshele ukuthi umkhiqizo ngowani nokuthi uqondiswe kubani. Bathini abakhiqizi ngakho? Lokho kuqhathaniswa kanjani nemizwa yakho ngakho?

I-Hazaribagh iyikhaya lamaphesenti aphakathi kuka-90 nama-95 azo zonke izimboni zesikhumba e-Bangladesh, futhi, ngenxa yalokho, inendawo ebalulekile embonini yesikhumba eya ngokuya ingenisa imali eningi e-Bangladesh. Kusukela ngoJuni 2011 kuya kuJulayi 2012, abakhiqizi besikhumba baseBangladesh bathumela kwamanye amazwe impahla yesikhumba nesikhumba ecela ezigidini ezingu-663—njengezicathulo, izikhwama, amapotimende namabhande—emazweni angaba ngu-70 emhlabeni wonke, kuhlanganise neChina, iSouth Korea, Japan, Italy, Germany, Spain. , kanye ne-United States. Kule minyaka eyishumi edlule, ukuthunyelwa kwesikhumba kwamanye amazwe kukhule ngesilinganiso samaRandi ayizigidi ezingu-41 unyaka ngamunye.

"Iqoqo liwufanekisela kahle umqondo womhlaba kuya esibhakabhakeni," kusho isitudiyo. "Umhlaba ngobuciko bezandla, isando sensimbi, ubunzima bezinto zokwakha. Isibhakabhaka esinezinga eliphezulu lezithombe eziqoshiwe, njengezidalwa eziyigugu ezilengiswe emoyeni."

Muva nje i-SciAps yethule i-Z, isihlaziyi esiphathwa ngesandla esinobuchwepheshe be-LIBS. I-Z, njengoba kukhonjisiwe kuMfanekiso 1, iletha ukusebenza kwenombolo ye-athomu ephansi ye-OES yeselula, kuyilapho igcina ukuphatheka kwe-XRF ephathwayo.

Lena indatshana yokufinyelela okuvulekile esatshalaliswa ngaphansi kwemigomo yelayisense ye-Creative Commons Attribution 4.0 International.

Ku-RDG yegesi eqinile, indawo yokukhiqiza yokuqala eyagunyazwa ngaphambili ifinyezwa ama-scfs ayizigidi ezingu-90, alingana nemiphongolo engu-15,000. Ngaphezu kwalokho, ukuqedwa kwamatheminali kagesi ekupheleni konyaka wezimali kuzokwengeza amanye ama-scfs ayizigidi ezingu-90, okungaba imiphongolo engu-15,000.

Ikholomu elandelayo yimenyu ye-Gas Dig. Isilungiselelo esiphezulu esokugeleza kwangaphambili, noma inani lesikhathi ofuna ukuthi igesi evikelayo igeleze ngaphambi kokuthi i-arc iqale. Okukodwa noma okubili kweshumi kwesekhondi kufanele kube kuhle ezinhlelweni eziningi. Isilungiselelo esimaphakathi esokugeleza kokuthunyelwe, noma inani lesikhathi igesi iqhubeka nokugeleza ngemva kokumiswa kwe-arc. Isekhondi elilodwa kuwo wonke ama-amps ayi-10 yilungiselelo elinconyiwe. Isilungiselelo esingezansi sisetshenziselwa ukusiza ukuvimbela i-electrode ukuthi ingami noma ifinyele lapho i-stick welding.

Indawo yokwakhiwa kwesikole esisha seColonial Elementary School iku-142 Murray Drive eTroutville. Isikole sizovula ekwindla ka-2020 kusenesikhathi.

I-Novelis, indlunkulu yayo e-US, ingumkhiqizi womhlaba wonke wemikhiqizo ye-aluminium eqedwe kancane kanye ne-recycler ye-aluminium. Isebenza ezindaweni zokukhiqiza eziningana kulo lonke elaseNyakatho Melika, eNingizimu Melika, eYurophu nase-Asia. I-Novelis iyinkampani engaphansi kwe-Hindalco Industries Limited, inkampani yase-India ehlinzeka nge-aluminium nethusi.

Imithombo yesibili—okuhlanganisa nocwaningo lwezemfundo, imibiko yephrojekthi, kanye nokusakazwa kwemithombo yezindaba—kwabuyekezwa futhi kwafakwa ukuze kuqinisekiswe ulwazi oluvela kubahlali noma izisebenzi zesikhumba. Lo mbiko uhlanganisa imithombo yesibili evela eminyakeni yawo-1990: lena yakhethwa ngamabomu ukukhombisa ubude besikhathi lezi zindaba okuxoxwe ngazo esidlangalaleni. Ucwaningo lwakamuva lusekela okutholwe yilolu cwaningo lwangaphambilini futhi lufakiwe kulo mbiko. Imithetho nezinqubomgomo zase-Bangladesh nazo zabuyekezwa.