듐 방사선에서 알파선과 베타선 이외에 투과성이 매우 강한 감마선이 있음을 알아내었습니다.
그림 11.1을 보시면 방사선이 전기적으로 대전된 판에 의해서 3가지요소로 나눠지는 것을 볼수있습니다. 첫성분은 음전하를 띠는 판으로 끌어 당겨졌고 그래서 양전하를 띤다. 이것을 알파입자입니다. 양전
⑵ 이산화탄소 포집기술 (carbon dioxide capture)
연소 후 포집기술은 연소공정을 거친 후 발생한 배기가스 내 포함되어 있는 이산화탄소와 질소를 분리하는 기술이다. 연소 후 포집은 대기압, 저온에서 운전이 가능하며 상대적으로 상용화에 가장 근접해 있다는 장점이 있으나, 에너지 비용이 과다한 문제
조직의 전략과 조직구조와의 관계
※ 30년전까지만 해도 조직구조를 결정하는 데에 조직의 전략은 가장 중요한 유일한 요소로
생각하였다. 그 이유는 폐쇄적 체계의 관점에서 조직은 경제의 법칙에 따라 목표를 향해 가 장 효율적으로 움직이는 수단으로 파악한 데서 기인한다. 그렇다면, 전략
reactors.
=> Techniques that increase the natural convection heat transfer rates should be developed.
* previous techniques
techniques and devices
shortness
use a finned surface
thicknesses become very large
install promoter
(small roughness elements,
rectangular ribs)
no appreciable increase
in heat transfer rates
Present authors have proposed a unique type of promoter : "
losing her. Launch the buoy!
The Exec opens the door to a small box and punches a button. A red light
comes on. The Captains takes a deep breath.
EXT. MONTANA 12
A tiny transmitter is ejected from the subs hell and begins its long ascent
to the surface. A second later the sub slams down like a piledriver onto a
ledge, tearing open its pressure hull.
INT. MONTANA 13
VARIOUS QUICK CUTS, just
small,
barely enough to vaporize twelve city
blocks. However, when it explodes in
contact with an object the size of a planet,
it starts a chain-reaction in the very
matter of that planet, turning it into
a giant reactor which destroys itself
in one staggering thermal flash.
These bombs are equipped with sophisticated
thought and speech mechanisms, to allow
them to make executive decisions in the
reactors that are designed to withstand very high pressures (up to one thousand atmospheres) and high temperatures (about 700°C or 1300°F). The reactors also resist attack by hydrogen gases which can corrode many metals, especially at high temperature and pressure. The catalyst in commercial ammonia synthesis is usually an iron oxide mixed with a small amount of additional "promoter" material.
reactor has eaten through four levels... Six levels... The
ship is disintegrating
LAREDO
Your orders sir?... Sir, your orders?
The Commander walks into close up; Steely determination.
COMMANDER
Activate the Omega 13.
The crewmates exchange expectant and terrified glances. CLOSE UP
of a crewmans hand as he operates a series controls which in
turn opens five layers of mechanical locks revealing a s
small RADAR DISHES, angled
down, scanning every inch of the area, save for the waterfall itself.
In other words: This was the only way in.
RETURN ON BOND -
007 shrugs. From his backpack, he takes out TWO CIGAR-SIZED BLACK
CANISTERS, and an ELONGATED BLACK BOX. He presses a button on the
side of the box, and - fwap, fwap, fwap - SNOW SKIS unfold.
He presses buttons on the canisters: TELESCOPIC SKI