English
Erlenmeyer shake flasks mikrobiologiya va hujayra biologiyasi sohalarida keng qoʻllaniladi. Ular katta hajmli kultura shakerlari bilan ishlatilishi mumkin va to'liq vaqtli suspenziya madaniyati, o'rtacha tayyorlash yoki saqlash uchun javob beradi. Hujayralar atrof-muhit uchun juda yuqori talablarga ega, shuning uchun odatda erlenmeyer shake flasks uchun qanday material ishlatiladi?
Material. erlenmeyer chayqaladigan kolba asosan plastik, asosan polikarbonat (PC) va PETG materialidir. Polikarbonat (inglizchada qisqacha PC) molekulyar zanjirda karbonat guruhlarini o'z ichiga olgan yuqori molekulyar og'irlikdagi polimerdir. Rangsiz va shaffof, issiqlikka chidamli, zarbaga chidamli, olovga chidamli, BI-darajali va oddiy ish haroratida yaxshi mexanik xususiyatlarga ega. U qurilish materiallari sanoati, avtomobil ishlab chiqarish, tibbiy asbob-uskunalar, aerokosmik, qadoqlash, optik linzalar va boshqa sohalarda keng qo'llaniladi. U tibbiy stakanlar, naychalar, shishalar, stomatologiya uskunalari, farmatsevtika idishlari va jarrohlik uskunalari uchun ishlatilishi mumkin va hatto sun'iy buyrak va sun'iy o'pka kabi sun'iy organlar sifatida ham qo'llanilishi mumkin.
PETG shaffof, kristalli bo'lmagan kopoliesterdir. Uning mahsulotlari juda shaffof va mukammal zarba qarshiligiga ega. Ayniqsa, qalin devorli shaffof mahsulotlarni shakllantirish uchun javob beradi. U mukammal qayta ishlash va qoliplash xususiyatlariga ega va dizaynerning niyatiga ko'ra har qanday shaklda ishlab chiqilishi mumkin. Plitalar, choyshablar, yuqori samarali shrink plyonkalar, shishalar va profilli materiallar bozorida keng qo'llanilishi mumkin bo'lgan an'anaviy ekstruziya, in'ektsiya, puflash va blister kalıplama usullaridan foydalanishi mumkin. Shu bilan birga, u mukammal ikkilamchi qayta ishlash ko'rsatkichlariga ega va an'anaviy ishlov berish modifikatsiyasi uchun ishlatilishi mumkin.
Polikarbonat (PC) va PETG materiallari erlenmeyer silkituvchi flasks uchun keng tarqalgan bo'lib foydalaniladigan materiallardir. Qaysi material tanlangan bo'lishidan qat'i nazar, u hujayra madaniyatining silliq rivojlanishini ta'minlash uchun hujayra madaniyatining turli ehtiyojlarini qondirishi 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.