- physical
Young's modulus(TPa): ~ 1
Tensile strength(GPa): 13 ~ 53
Elongation(%): 16- electrical
- electrical
n=m, metallic
n-m is a multiple of 3, semiconductor
(of course, it has exceptions)
The direction
parallel to the graphene sheets /
the direction perpendicular to them.
resistant varieties of crops, and they have cultivated south-facing slopes as well as richer bottomlands to ensure production even in years with summer frosts. Most farmland had originally been either forest or swamp, and the soil had usually required treatment with lime and years of cultivation to neutralise excess acid and to develop fertility. Irrigation was generally not necessary, but draina
sheet. Each of these three types had advantages, however the main fact we considered was visibility. So before making prototype, we tested 3 types of LEDs by using general voltage. In addition, location of LEDs on umbrella was important. All of the top, middle, and bottom side of an umbrella were important considerations. Through many times of experiments, we decided to use one straight lighted L
We organized stakeholder groups
to design
new power supplier of glucometer.
Harvesting energy by converting walking motion from the human body into electric power
1. Piezoelectric sheet is easy to be
torn by the outer pressure.
resistance to her mother’s efforts to make her into someone she is not. The narrator’s strategy is one of quiet and passive resistance. She lies about her practice time and does only what she has to do during her lessons. Subsequently, her mother has no idea how poor and undisciplined a musician she is. At her piano recital, her awful, unpracticed playing embarrasses herself as well as her mo
Resistance to Punture): 유크레아 LLDPE필름은 인장강도와 신장률이 우수하기 때문에 기존의 고압법 LDPE필름보다 최소한 2~3배 정도 우수하며, 내핀홀성 또한 최소한 4배이상 우수하다.
c) 고압법 LDPE와 혼합사용: 유크레아 LLDPE는 단독으로 사용되어 기존의 고압법 LDPE의 많은 분야에 대체,사용되고 있으며, 필
resistance increases with increasing molecular weight.
The solutes separate by passing through the membrane that
behaves like a fibre filter and separation occurs by a sieving
action based on the pore diameter and particle size
(i.e. smaller molecules will diffuse faster than larger molecules).
Transport proceedes via diffusion through a nonporous membranes.
Membranes are highly swol
To understand cost account that we learned in the class and to know how it used in construction site.
The site has inclination . So, the area which resist high pressure use CIP and the area which resist low pressure use H Pile+Timber.
Using the Top-down method, it can excavate both
side at the same time. They don’t need to excavate
next site. Therefore, it could reduce the d
be heated slowly.
2)The reason why there is a difference so as to increase heat-treatment time
time Conductivity Resistivity
Such a reason difference
electrical conduction is affected by concentration and mobility
- p-type : mobility more suddenly decrease than the sheep that concentration increases because hall is a major carriers
- n-type : Decreasing
total amount of CO2 gas
Structure of an automobile
Chassis
Mg-Zn-Zr alloy
Magnesium alloy + Zr
Grain refinement
Mg-Ce alloy
Precipitation Ce on GB at high temp.
High creep strength
Engine parts(Introduction)
Basic engine part
High engine weight ratio
Require strength
Require heat resistance
Require easy casting property