4) Methods to measure density
Specific gravity-bottle method
Sink-and-float method
Density gradient method
Displacement method
Sink-and-float method
uses heavy, light solvents and a solution that has the same density of our target polymer.
ρ₁ = the density of heavy solvent
ѵ₁ = the volume ratio of heavy solvent
ρ₂ = the density of light solvent
ѵ₂ = the v
use disposable gown -too expensive for private hospital.
Operating gown
- Safety : from bacteria, blood
Hygiene
Especially Dupont™, they offer many choices, so we can meet satisfaction.
- Environment-friendly
Inner wear
- Comfort – due to wide sleeves
- Various designs and colors
Make linen operating gowns mark the polluted part with fluorescent material. When the surgeons
Fuel Cell?
The fuel cell is a device that transforms chemical energy generated by oxidation of fuel(hydrogen, methanol, natural gas etc.) into electric energy
The reaction of hydrogen and oxygen generates electricity. It is a reversed reaction that generates hydrogen and oxygen by doing water electrolysis
(중략)
Polyelectrolyte fuel cell
Using a membrane with a proton conduction as an
2. Objective
1) To investigate of solid-liquid mixture flow characteristics in a slim hole annulus
2) Effect of pipe rotation, fluid property, annulus inclination on the particle transport velocity, transport efficiency and pressure drop
3. Theoretical background
3.1 Reynolds number
Reynolds number can be defined for a number of different situations where a fluid is in relativ
The lens is used to focus the sectioned UV light down to a smaller area on the chip. The smallest feature size capable of being written on the wafer is a function of the numerical aperture of the lens as well as the wavelength of the light.
uses a patterned elastomer(e.g. PDMS(Poly DiMethyl Siloxane)) as the stamp, mold, or mask to generate micro-patterns and microstructures
C
PVAc (Poly vinyl acetate)
A rubbery synthetic polymer
with the formula (C4H6O2)n
A hard, colorless, and nontoxic substance.
An intermediate product in the synthesis of polyvinyl alcohol.
Emulsion Polymerization
starts with an emulsion incorporating water, monomer, and surfactant.
Advantage
- High molecular weight polymers can be made.
- Heat can be removed
use a system of progressive taxation. On the other hand, the Republican Party’s platform generally reflects American conservatism in the U.S. political spectrum and is considered center-right. They emphasize the role of free markets and individual achievement rather than government as the primary factors for economic prosperity (Wiki, 2011).
The law of the United States was originally largely
use nanotechnology, especially nanoparticles that can carry the drug molecules to the target safely.
5.2.2 Nanocarriers - Nanoparticles
Before starting with the functionalization of nanoparticles, it is important to keep in mind a range of useful properties we wish to have in any drug delivery across the BBB(Blood brain barrier). In this context, owing to their small size, customizable su
3. Investigation
⑴ What is biofilter?
- Technology processed gas pollutants by biological methods, immobilized on porous carrier by the metabolic activity of microorganisms decompose into harmless substances
- Depending on the configuration and operation of the device, it can classify as Biofilter, Biological Trikling Filter, Bioscrubber and Air Lift Bioreactor
Example of use of Biof
onto an electrode !
“We can make better capacitor by
Improving quality of nanowires
Made from SLS mechanism”
1. Make template(Anodic Aluminium Oxide – AAO method)
2. Fill the catalyst in the template
- Use electrodeposition to fill template
3. Use SLS mechanism
- InP nanowire made from SLS has linear shape along the
normal direction of the template