(주)이산은 각 분야별 전문지식과 경험을 축적한 기술진이 최신의 전산시스템, 공학적 전문프로그램으로 사업특성에 맞는 최적의 엔지니어링 서비스를 제공하고 있는 기업이다. 건축전기설비계의 대가인 (주)이산 정춘병 환경플랜트부 부사장을 만나 그의 삶과 리더십에 대해 들어본다.

Huge amount of energy produced by an underground nuclear test is released into the surrounding rock. Depending on the properties of the bed rock surrounding the detonation and overlaying it a variety of effects can occur. At some particular depth the increasing amount of material thrown upward is exactly balanced by the decreasing fraction escaping the crater, the crater volume reaches to a maximum. This depth is called the optimum depth of burial and varies somewhat with the geology of the site, being greater for less dense and structurally weaker material.

The KEPCO Research Institute has developed Molten Carbonate Fuel Cell(MCFC) since 1993. Recently, an 125-kW MCFC system was operated at Boryeong thermal power plant, Korea from December, 2009 to March, 2010, This system is composed of an 125-kW stack, mechanical balance of plant (MBOP), and Power Conditioning System. The stack has 200 unit cells of which effective area is 10,000 cm2. Especially, MBOP is mainly made up of ejector and catalytic combustor which help this system to be supplied with cathode inlet gas using anode tail gas and fresh air. After the pretreatment of this system was performed for about 20 days, initial load operation was performed at January. 2010. Moreover, this system had been operated for 3,270 hours.

말로만 듣던 고대 인류의 도서야 교통로인 비단길(실크로드) 즉 돈황, 하미, 선선, 투루판, 우루무치 지역의 역사유적지의 유물들을 실제로 단기간 탐방하는 기회를 갖게 되어 주마간산 격으로 체험한 관광기행문을 실크로드 개요와 탐방현지를 중심으로 소개한다.