Ⅰ. Introduction of Study
1. Background of study
Although the name of 'QR code' was difficult to remember at first, the recognition rate of 'QR Code' is increasing day by day. As smart phones have become popular globally, various marketings which are using it have appeared. One of the typical marketings is QR code marketing. If QR code which is also called 2D barcode is scanned, it simpl
Introduction
The DeskJet printer was introduced in 1988 and had become one of HP`s most successful products. Even though sales had grown steadily, inventory growth had tracked sales growth closely. And the organization in Europe was claiming that inventory levels there needed to be raised even further to maintain satisfactory product availability. Representatives from each countries discussed bu
Ⅱ. 1차 조사 자료
1. 정제공정 및 공정도
1) 원 유 (CRUDE OIL)
원유(Crude Oil)는 지층에서 천연적으로 산출되는 가연성 액체로서, 이를 정제하여 만든 제품이 석유제품(Petroleum Products)이며, 원유와 석유제품을 총칭하여 석유(Petroleum)라고 한다.
(1) 원유의 성분과 조성
원