experiment may have half a callus undergo a treatment as the experimental group, while the other half undergoes a similar but non-active treatment as the control group.
Plant cell calluses may be made to differentiate into the specialized tissues of a whole plant, with the addition of a number of hormones or enzymes. This is an ability known as totipotency.
A callus is often the target of a gen
To understand the principle of laboratory distillation
To separate a binary mixture with different boiling points through fractional distillation
Practice the application of distillation devices
Measure the efficiency of distillation column
Calculate the minimum ideal plates
Superheated vapor feed(q<0)
Saturated vapor feed(q=0)
Partially vaporized feed(q=0.5)
Saturated liquid
Significantly higher surface area and much narrower pore size distribution in the mesopore region
A large amount of amine-type CO2 capturing agent into its mesopores in a well dispersed manner
Synthesis of MA
PEI impregnation on MA
Amine grafting on MCM-41
Characterization of the materials prepared
CO2 adsorption-desorption measurement
Al(i-PrO)3 (41.68g)+ Alcohol solvent
design
It is much more efficient than a simple retort due to its use for liquid cooling
a Liebig condenser can condense a much greater flow of incoming vapour than an air condenser or retort
1.Place 18.3ml of nitrobenzene and add 25g of iron
powder in 3-neck flask with shaking.
2. Add the 6ml of hydrochloric acid slowly, as cooling
nitrobenzene using condenser. (Keep
투입이 이루어지는 집단
CG : 통제집단(Control Group)
실험집단에 대응되는 집단,
처리방법이 가해지지 않는 집단,
1.원시실험설계 (pre-experimental design)
실험변수 조작의 어려움
실험적 통제가 거의 불가능
인과관계를 규명하는데 부적절
가설의 검증보다는 문제의 도출을 위하여
탐색조사의 성격