characterization of the preformed polymers
Limitation
-cannot produce dense polymer brushes
-polymer thickness limit
Grafting from
‘‘Grafting-from’’ involves an in situ polymerization of an initiator functionalized surface with monomer.
Advantage
-can produce polymer brushes of high grafting density
-control over film thickness and composition
Limitation
-initiator
characterization of biological agents, being necessary to identify and detach the frequency shifts coming from the added mass and the stiffness changes.[10]
When working in the dynamic mode, the resolution of the system, Df, is determined by the quality factor, Q, following the expression △f=f/Q. The quality factor quantifies the energy dissipation and is defined as the ratio between the mec
In black, we hear a chain-gang chant, many voices together, spaced around the unison strike of picks against rock. A title burns in:
O muse!
Sing in me, and through me tell the story
Of that man skilled in all the ways of contending...
A wanderer, harried for years on end...
On the sound of an impact we cut to:
A PICK
splitting a rock.
As the chant continues, wider angles show the chain-gang at w
Enamel
√ Hard and white substance covering the teeth
√ The hardest and most highly mineralized
√ Protects the fragile underlying parts of the teeth
√ Covers the crown and supported by dentin
Component of enamel
√ 96% of enamel : mineral, water, organic material
√ contain two unique classes of proteins amelogenins and enamelins
√ The basic unit of enamel is called
1. Introduction
"Relationships with customers and suppliers allow us to know what we must be able to supply in real time and then very quickly and precisely meet that demand while maintaining low inventory."
(Dave Schneider, engineering manager of Dell)
As of July 2002, Dell Computer Corporation (Dell) was the world’s largest direct selling computer company, with 34,800 employees in more tha
1. Environmental Analysis of the Premium Ice cream Market
Economic Environment
● Expand of the Premium Ice cream Market, premium ice cream companies have continued expand sales channels. Premium ice cream entrenched position as favorite food for four seasons
● Purchasing Power - Floating population of the region located the stores
● Exchange rate
Recent U.S. financial crisis a
투과전자현미경은 주로 시료의 내부구조나 단면을 관찰하는데 쓰이고 있다. 원리는 광학현미경과 비슷하다. 전자현미경에서의 광원은 높은 진공 상태(1x10-4 이상)에서 고속으로 가속되는 전자선으로 이 전자선이 표본을 투과하여 형광판이나 사진필름에 초점을 맞추어 투사된다. 이 전자의 파장은 가
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
A filter is widely used in overall RF system. There are many species and structures in filter. A filter seems to be simple, but there are many considerations to design filter. In this paper, we design microstrip bandpass filter which has bandwidth of 500 MHz and center frequency of 2.5 GHz. Alumina is used as substrate, and chromium is used as conductor. Final results are achieved as follows. Ins