English
Muhit organizmdagi hujayralar o'sishini sun'iy ravishda taqlid qiluvchi va mikroorganizmlar, o'simliklar yoki hayvonlar (yoki to'qimalar) o'sishi va ko'payishini ta'minlaydigan ozuqa muhitini anglatadi va turli oziq moddalarni birlashtirish orqali tayyorlangan ozuqa matritsasi hisoblanadi. Muhit qanday saqlanishi kerak va media shishalar uchun qanday talablar bor?
Muhitni saqlash quyidagi tamoyillarga amal qilishi kerak:
1. Tijorat tashuvchisi yo'riqnomada ko'rsatilgan talablarga muvofiq saqlanishi kerak. Muhitning yorlig'ida partiya raqami, ishlab chiqarilgan sana, yaroqlilik muddati va vositaning tegishli xususiyatlari ko'rsatilgan bo'lishi kerak. Amaldagi saqlash va tashish sharoitlari muhitdan namlik yo'qotilishini minimallashtirishi va mexanik himoyani ta'minlashi kerak.
2. Tayyorlangan vosita qorong'i muhitda 2 ~ 25 ℃ haroratda saqlanishi kerak. Agar u havo o'tkazmaydigan idishda saqlansa, u odatda uch hafta ichida ishlatiladi; agar u yopiq idishda saqlansa, u odatda bir yil ichida ishlatiladi. Muzlashdan jel xususiyatlariga zarar yetkazmaslik uchun agar muhiti 0 °C yoki undan past haroratda saqlanmasligi kerak. Agar vosita uzoq vaqt davomida saqlanishi kerak bo'lsa, agar plitalari suv yo'qotilishining oldini olish uchun mahkam o'ralgan yoki havo o'tkazmaydigan idishga joylashtirilishi kerak.
3. Muhit sterilizatsiya qilingandan so'ng darhol olib tashlanishi kerak va vosita sifatiga ta'sir qilmaslik uchun avtoklavda saqlanmasligi kerak. Tayyorlangan muhit qorong'i muhitda 2-25 ° C haroratda saqlanishi kerak.
4. Namlikni yo'qotmaslik va saqlash muddatini uzaytirish uchun havo o'tkazmaydigan idishda saqlang.
5. Sterilizatsiyadan keyin qattiq muhitni qayta eritish isitiladigan suv hammomida yoki aylanma bug' yordamida amalga oshirilishi kerak, faqat bir marta ruxsat beriladi va eritilgan muhit suv hammomiga 45-50 ° C haroratda joylashtirilishi kerak. 8 soatdan ortiq.
Muhit asosan hujayra kulturasida ishlatiladi. Hujayra o'sishi uchun zarur bo'lgan muhitga nisbatan yuqori talablar tufayli, muhit ifloslanmaganligini ta'minlash uchun, vosita shishasi odatda DNase, RNase va issiqlik manbalaridan xoli bo'lishi uchun elektron nurlar bilan sterilizatsiya qilinadi. Muhitning sig'imini kuzatishni osonlashtirish uchun media butilkalarining xom ashyosi asosan yuqori shaffoflikka ega poliester materiallardan iborat bo'lib, shisha tanasida o'ziga xos tarozilar belgilanadi.
Hujayra o'sishi uchun muhim ozuqa sifatida, muhit yaxshi saqlanadimi, hujayralarning normal o'sishi bilan bog'liq. Media shishasini tanlashda uning muhitni saqlash talablariga javob berishiga alohida e'tibor berilishi kerak.
The FAI climbed 5.9 percent year-on-year in the first 11 months of 2018, quickening from the 5.7-percent growth in Jan-Oct, the National Bureau of Statistics (NBS) said Friday in an online statement.
The key indicator of investment, dubbed a major growth driver, hit the bottom in August and has since started to rebound steadily.
In the face of emerging economic challenges home and abroad, China has stepped up efforts to stabilize investment, in particular rolling out measures to motivate private investors and channel funds into infrastructure.
Friday's data showed private investment, accounting for more than 60 percent of the total FAI, expanded by a brisk 8.7 percent.
NBS spokesperson Mao Shengyong said funds into weak economic links registered rapid increases as investment in environmental protection and agriculture jumped 42 percent and 12.5 percent respectively, much faster than the average.
In breakdown, investment in high-tech and equipment manufacturing remained vigorous with 16.1-percent and 11.6-percent increases respectively in the first 11 months. Infrastructure investment gained 3.7 percent, staying flat. Investment in property development rose 9.7 percent, also unchanged.