Overview
The printer that is widely used is 2D printer. 2D printer is operated with papers and ink. It can print the letters, shapes and colored pictures on the paper. However, 3D printer can make 3D structure with ink like polymer. 3D printers make the product with not the top-down method but the bottom-up method. The most useful advantage of 3D printer is that it is the more useful device wh
5.2 Drug Delivery System
5.2.1 Advantage of Nano-drug delivery system
By diagnosis, and for treatment, we need enhanced drug delivery system. Drug delivery system of these days is just eat and let it flow through the body. It is not good at efficiency. Because the digestive system sometimes digest and remove the drug before it reaches to the target.
For enhancing the efficiency of drug
Figure 9. Electrostatic field simulation.
(a) The electrostatic field(E.F) contour lines are plotted
(b) The absolute value of the E.F against height.
FE-SEM micrographs of electrospun fiber mats at various surface velocities:
4.3 m/s, (b) 8.6 m/s,
(c) 12.9 m/s, and (d) 17.2 m/s.
(The direction of rotating drum is downward.)
3.B University of Colorado CU)
콜로라도 주 Boulder에 위치한 University of Colorado at Boulder는 콜로라도 주에서 가장 큰 대학교이다. 학교 내에 위치한 ATLAS Building은 Leadership in Energy and Environmental Design program(이하, LEED program) 으로 미국의 Green Building Council의 gold rating을 받았다.
LEED program은 green building의 디자인, 설
Piezoelectric crystal, e.g. Quartz and PLZT (Pb, La,
Zr, TiOx) are well known for their sensitivity to
pressure on their crystal surfaces. In addition,
the oscillating frequency of a piezoelectrc crystal
decreases on adsorption of a foreign substance
onto its surface.
The variation of oscillating frequency is
proportional to the mass of foreign
molecules deposited on the crystal surf
- 가장 보편화된 나노기술현재 인간이 가지고 있는 보편화된 기술 중 가장 미세한 구조물을 만들어내는 방법이 있다면 그것은 포토리소그래피일 것이다.포토리소그래피는 실제 전자집적회로> 제작에 사용되는 기술로써 그 원리는 다음과 같다.크롬층과 유리기판의 맨 위에 놓인 감광고분자 막 위에 레
system)
: 내부통제 목적상(internal control purpose)
(1) 현금수입은 당일자로 예입하고, 지출은 수표발행을 해야 하지만, 통신비, 여비, 교통비, 운반비, 잡비 등 일상적인 소액지출시 매번 수표를 발행한다면 현금관리의 효율성이 없고, 수표발행과 동시에 분개를 해야 하므로 이 또한 번거로울 뿐이지 효익이
system is a task currently important.
Regulation of nanoparticles.
Size : 10~100nm (EPR effect)
Coating PEG polymer
Why nanoparticles?
1) It can deliver a larger quantity of drugs with better safety.
2) Easy to attach targeting ligands.
3) It is enough size to deliver multi-drugs.
4) Can regulate releasing of drug particles.
5) Can avoid multidrug resistance through cell-surface pro
system in which the fluctuation is fixed within a certain standard (-+1%)
1945. 10 The official won-dollar exchange rate was enacted to 15 won per dollar by U.S. authorities.
1948. 02 The dealing rate about 850 won per dollar was formed after the enforcement of the foreign exchange slip of deposit policy.
1948. 10 After the establishment of a government, the official exchange rate was for
금지하는 법령이다
60. Clean float : A floating exchange rate system in which there is absolutely no intervention by governments.
정부로 부터의 전도가 없는 평평한 환율 체계
61. Closed shop : A firm where workers are forced to become union members as a condition of employment.
고용의 조건으로 노동자가 조합의 일원이 되도록 강요받는 회사.