English
Hujayralarni o'stirishda biz ko'pincha turli xil hujayralar ifloslanishidan tashvishlanamiz. Hujayralar ifloslanganidan so'ng, bu nafaqat hujayra o'sishiga ta'sir qiladi, balki ba'zi hollarda biz hujayralarni tashlab, ularni qayta o'stirishimiz kerak, bu esa tajriba jarayoniga ta'sir qiladi. Hujayra fabrikalari keng miqyosli hujayra madaniyatida keng qo'llaniladi va ularning umumiy ifloslanishlari asosan quyidagi uchta toifaga kiradi:
1. Jismoniy ifloslanish: asosan harorat, tebranish, radiatsiya va radiatsiya kabi jismoniy omillarning hujayralarga zarar etkazishini anglatadi. Hujayra madaniyati muhitiga radiatsiya yoki ultrabinafsha nurlar ta'siri kabi hujayra metabolizmida o'zgarishlarga olib keladi. Inkubator atrofida mexanik tebranishlar hosil qiladigan qurilmalar mavjud bo'lib, ular hujayra o'sishiga ham ma'lum ta'sir ko'rsatishi mumkin.
2. Kimyoviy ifloslanish
Hujayra madaniyati uchun ishlatiladigan muhit va suv avtoklavda sterilizatsiya qilinishi kerak. Ular orasida zardob hujayra madaniyatida keng qo'llaniladigan vositadir va sarum potentsial kimyoviy ifloslanishga ega. Bundan tashqari, sarumning tarkibi noaniq va sarumning turli hujayralar o'sishiga ta'siri, shu jumladan toksik va yon ta'siri har xil.
3. Mikrob bilan ifloslanish
Mikrobial ifloslanish hujayra fabrikalarida hujayralar o'sib chiqqanda o'sadigan bakteriyalar, mog'orlar, mikoplazmalar va qora qurtlar kabi turli xil ifloslanish manbalariga ishora qiladi. Qora elim hasharotlari bilan ifloslanganidan keyin hujayralarda kichik qora dog'lar paydo bo'ldi va tartibsiz harakatlarni yuqori kattalashtirish mikroskopida ko'rish mumkin edi. Madaniyat muhitining loyqaligi aniq emas va u hujayralarning o'sish holatiga katta ta'sir ko'rsatmaydi.
Yuqoridagilar hujayralarni ekish uchun hujayra zavodlaridan foydalanganda uchta keng tarqalgan ifloslanish turidir. Ifloslanish manbalaridan ta'sirlanishdan tashqari, hujayralar ishlab chiqarish muhiti, harorat, osmotik bosim, pH qiymati va boshqa omillar bo'yicha ham qat'iy talablarga ega. Faqatgina mos o'sish muhiti yaxshi hujayra o'sishini ta'minlaydi. holat.
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.