English
Braitheann fás na gcealla ní hamháin ar chothaithigh flúirseach, ach ní mór freisin a bheith laistigh de raon luach pH oiriúnach le haghaidh gnáthfhás agus atáirgeadh. Mar sin, sula n-úsáidtear an cell factory le haghaidh cultúr cille ar scála mór, ní mór luach pH an mheán a thomhas agus a choigeartú ar dtús.
Tagraíonn an luach pH don chóimheas idir líon iomlán na n-ian hidrigine. sa réiteach ar an méid iomlán na substaintí. Go ginearálta, is é 7.2-7.4 luach pH an mheán atá ag teastáil le haghaidh fás cille. Ní chabhródh ró-ard nó ró-íseal le fás cille. Úsáideann an mhonarcha cealla meán leachtach chun cealla a shaothrú, ar féidir é a thomhas le méadar pH. Is ionstraim speisialta é an méadar pH chun luach pH tuaslagáin a thomhas. Tomhaiseann sé pH an tuaslagáin trí leictreoid roghnúcháin pH (cosúil le leictreoid ghloine), agus is féidir leis an toradh tomhais a bheith cruinn go dtí dhá ionad deachúla.
Ní mór é a chalabrú le tuaslagán maolánach caighdeánach de pH aitheanta (pH de ghnáth). 4~7) roimh úsáid. Déantar leictreoid an mhéadair pH a rinsiú le huisce driogtha agus ansin tumtha i meán an eascra, agus is féidir pH an mheáin a léamh ó scála an mhéadair pH. Soláthraíonn gach monaróir treoracha oibriúcháin mionsonraithe do gach méadar pH éagsúla.
Tar éis an tomhais, má tá luach pH an mheáin a úsáideann an mhonarcha cille diall, ní mór é a choigeartú dá réir sin. Is féidir an méadar pH a chalabrú le tuaslagán maolánach caighdeánach de pH ar a dtugtar, ansin cuirtear an leictreoid ilchodach agus an teirmiméadar friotaíochta sa mheán cultúir, agus cuirtear méid cuí aigéad hidreaclórach agus hiodrocsaíd sóidiam go mall ó dheireadh an eascra ar shiúl ó. an leictreoid chun meán cultúir a dhéanamh. An pH atá ag teastáil a bhaint amach agus a chothabháil.
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.