Who is interested in the process?
Alongside traditional methods of processing and preserving food, the technology of food irradiation is gaining more and more attention around the world. Although regarded as a new technology by some individuals, research on food irradiation dates back to the turn ofthe century with the first USA and British patents being issued in 1905 for the use of ionizing
* Dye is varied depending on the
type of substituent X
* 3 conditions are needed
- absorb all visible light.
- bond with nano-oxided substance.
- resist against heat and optics.
* Dye have a major impact in the
efficient of DSSCs
1.Illumination of Sunlight
- Absorbed by Dye sensitized.
2. Excited Dye molecule injects
electron to TiO2.
Converts sunlight directly into electricity
Non polluting
Long lasting sources of energy
No need of maintenance
In the long run, solar electricity is cheaper
Electrons ofdye absorb solar energy
Electrons ofdye are excited & Generate electron-hole pairs
Electrons transfer from dye to FTO via TiO2
1/2 I3- + e 3/2 I- at counter electrode
3/2 I- 1/2
For comparative purposes the corresponding peak-to-background ratios were: 4.4, 7.1 and 7.9 for 5kV, 10kV and 15kV, respectively. In addition to Nb, other elemental peaks could be detected from the surrounding materials. The Al and Si peaks were generated from the holder (the O peak was visible due to oxidation ofthe holder itself), the Ni peak originated from the sample grid and the extraction
We figured that Cold Stone has problems with their emplacement. Therefore, Cold Stone could improve their strategies to compensate the problems. Cold Stone is an urgent need to increase the number of stores on a priority basis due to the current limited number of stores. Attracting various customers due to how small their visibility is in the streets. In big cities or in Seoul for example, there
In the semiconductors, when the energy excesses the band gap, electrons and holes are generated.
Similar to this, photons must overcome the photonic band gap energy to generate the color.
Then, if we know the specific color band gap, we can make that color by control the atomic structures.
Also, we can use this in ‘Information and communications technology’ by controls of total internal
slightly thinner and elongated than B-DNA conformation.
The conformational change readily occurs in alternating Purine and Pyrimidine sequence.
Z-DNA is a higher energy conformation than B-DNA (ΔG near +4kcal/mol)
The roles of Z – DNA in biologic system are not clearly identified and an area of active study.
A high affinity Z-DNA Binding Protein , DRADA
hollow cylinders consisti
Inorganic phosphor
○ A phosphor, most generally, is a substance that exhibits the phenomenon of luminescence.
○ Phosphors are often transition metal compounds or rare earth compounds of various types.
○“Classical” inorganic phosphors usually consist of a host lattice with activator ions doped into it in small concentrations, typically a few mole percent or less.
Host lattice &
2. Resonance structure of TPP
TPP의 공명구조 – 18개의 p electron 관여
TPP의 ring에 존재하는 22개의 π electron
이 중에서 18개의 전자가 교대로 공명구조에 참여한다.
평면구조 가짐 /conjugation / 4n+2 개의 π 전자 aromatic compound
보다 안정해진다.
1번 실험의 driving force
Spin-Orbit Coupling
: 원자번호가 클