principle of 3D printing. In normal ink-jet printing, the 2D (two dimensional) printing program steers the printing nozzle from right to left and instructs the deposition of ink droplets to form a line of drawing or of text. When the paper advances the width of the line, the next pass of the nozzle deposits a slightly different pattern. Thus line by line the complete text or the drawing is formed
II. How is CBM formed
Coalbed methane (CH4) forms in one of two ways. During the earliest stage of coalification (the process that turns plant detritus into coal), biogenic methane is generated as a by-product of bacterial respiration. Aerobic bacteria (those that use oxygen in respiration) first metabolize any free oxygen left in the plant remains and the surrounding sediments. In fresh water
General Process of 3D printing
FDM - Fused Deposition Molding
FDM works on an "additive" principle by laying down material in layers.
The model is produced by extruding small beads of thermoplastic material to form layers as the material hardens immediately after extrusion from the nozzle.
The nozzle can be moved in both horizontal and vertical directions by a numerically controlled mechanism
forming units, cfu)로 표현된다. 식품공전에 의하면 살균된 시유와 배양시키지 않은 유제품은 세균수가 1ml당(또는 1g당) 40,000을 넘지 않아야 하며 대장균수는 10이하이어야 한다고 명시되어 있고 발효유는 유산균수가 1ml당 10,000,000개 이상(단, 농후발효유는 100,000,000개 이상)이어야 한다고 명시되어 있다.
2
principle of cloud computing is to gather each computer’s resource which exist in another physical place by virtualization. It can be demonstrated as we can borrow IT resource from cloud as a form of service.
Cloud computing serves three kind of services, SAAS, PaaS, IaaS.
1. SaaS (Software as a Service)
Get out of the ordinary package way which has to buy software license and install each h
3D printing 레포트
석탄층 메탄가스(CBM·coal bed methane)개발 및 발전 연구(영문)
3D 프린팅의 원리
