3D printing
3D printing or additive manufacturing (AM) refers to any of the various processes for printing a three-dimensional object. Primarily additive processes are used, in which successive layers of material are laid down under computer control. These objects can be of almost any shape or geometry, and are produced from a 3D model or other electronic data source.
Basic principles
If the
2. Analysis of project
1) Course of pipeline from knock-out drum on the first floor to storage tank on the third floor.
It is ideal to design pipelines using straight line for economic feasibility and efficiency but that is impossible for the reason of structure of plant. So It is necessary to inspect the structure of plant.
2) What kinds of pipe do we decide?
Considering economi
and biological properties that differ from those of their larger, or bulk counterparts
Nanotechnology: The National Nanotechnology Initiative(NNI)-> the science of materials and phenomena in the range of 1 to 100nm in diameter
*Features of ‘nanoparticles’
Size
Shape
Surface area
Permeability
ex) liposome, polymer, quantum dot, magnetic particle, carbon nanotube, nanoshell
What is Bioenergy?
Bioenergy is renewable energy made available from materials derived from biological sources. Biomass is any organic material which has stored sunlight in the form of chemical energy. As a fuel it may include wood, wood waste, straw, manure, sugarcane, and many other byproducts from a variety of agricultural processes.
So, Why do we produce Bioenergy?
One reason governments
X-ray photoelectron Spectroscopy는 광전자분광법(XPS)중 광원으로서 X선을 이용하는 방법으로 ESCA(Electron Spectroscopy for Chemical Analysis)라고도 한다. X선이 물질에 입사하여 흡수되면 그 에너지에 의해서 허용되는 내각전자로부터 가전자까지 여기되어 원자는 이온화한다. 이 여기된 전자는 고체 시료의 경우, 일부