Mbiri yachitukuko cha matumba oyika vacuum

Chikwama cha vacuumUkadaulo udayambika m'zaka za m'ma 40, popeza filimu yapulasitiki ya 50s idagwiritsidwa ntchito bwino pakuyika zinthu, ukadaulo wa thumba la vacuum wapangidwa mwachangu.Kupaka pamlingo wina kumawonetsa kuchuluka kwa sayansi ndiukadaulo komanso kutukuka kwa dziko.Kafukufuku waukadaulo wamachikwama opaka vacuum waku China ndikugwiritsa ntchito akadali wakhanda.
Choyamba, mu 1962, Ordal akufuna filimu yosasunthika imatha kulepheretsa kukula kwa tizilombo toyambitsa matenda, kulongedza nyama yatsopano kungathe kuwonjezera moyo wake wa alumali.
Chachiwiri, Baltzer kuti vakuyumu ma CD matumba atsopano nyama kuposa aerobically mmatumba mwatsopano nyama alumali moyo wautali pazifukwa zotsatirazi: (1) chiwerengero cha tizilombo mu anaerobic zinthu kumawonjezera pang`onopang`ono;(2) kuwola ndi kuchepetsa ntchofu;(3) mutatha kusungirako, chiwerengero chomaliza cha tizilombo toyambitsa matenda mu phukusi la vacuum ndi chocheperapo kuposa aerobic phukusi.Izi zikusonyeza kuti impermeable filimu vakuyumu ma CD mwatsopano nyama, pamene mpweya mmenemo n'kukhala mpweya woipa, impermeable filimu angalepheretse mpweya kunja kulowanso phukusi, kotero vakuyumu ma CD thumba akhoza kuwonjezera alumali moyo wa nyama yatsopano.
Chachitatu, mu 1970, Pierson ndi zoyika zina zofufutira kuti apange mitundu yosiyanasiyana ya tizilombo tating'onoting'ono ndi milingo ya "ecosystem".1974 kampani ya SCOPA idayamba kugwiritsa ntchito MAP (ModifiedAtmospherePackage, ndi vacuum poyamba, kenako Mu 1974, SCOPA idayamba kugwiritsa ntchito MAP (Modified AtmospherePackage, yomwe ndi mtundu wapaketi womwe umatsukidwa ndikudzazidwa ndi gawo linalake la kusakaniza kwa gasi) kuti apake. zinthu za nyama.
Chachinayi, Pesis et al.(1986) adavomereza izimatumba onyamula vacuumNdi njira yabwino kwambiri yosungira bwino komanso kuuma kwa zipatso za persimmon.Izi zikuwonetsa kuti chitukuko ndi kutchuka kwa teknoloji yosungiramo zinthu ndi kusungirako kumayamikiridwa kwambiri ndi opanga, ogwira ntchito ndi ogula.Mbali ina ya zida zofunika ma CD vakuyumu ndi ma CD chidebe, ma CD zotengera zamitundu yambiri, pali pulasitiki, pulasitiki ndi pepala, zojambulazo za aluminiyamu ndi zinthu zina zophatikizana zopangidwa ndi pawiri, mabotolo agalasi, zotengera zitsulo ndi pulasitiki yolimba, etc., kusankha ma CD zotengera ayenera zochokera chikhalidwe cha vakuyumu-odzaza chakudya, monga chakudya zamzitini ntchito mabotolo galasi kapena zitini zitsulo, monga Chinese mankhwala azitsamba ndi zotayidwa zojambulazo kapena pulasitiki, etc. Ngakhale pali mitundu yambiri ya zida zotengera vacuum ma CD matumba, koma ambiri ndi pulasitiki filimu.
Mkubwela kwa kuphatikiza chuma padziko lonse, China pamwamba pulasitiki makampani kukhala "opikisana kwambiri kusintha ma CD mtsogoleri" monga cholinga, kupitiriza kukhala, luso, ndi kuyembekezera kugwira ntchito ndi anzako ambiri kunyumba ndi kunja kuti akonze mawa bwino.