魔神坛斗士

http://tupian.hudong.com/a2_42_86_01300000836651127569862289715_jpg.html

http://www.tangdou.com/html/playlist/1610/337123.html
http://www.tangdou.com/html/playlist/1612/337578.html

Finding Atlantis

http://www.youtube.com/watch?v=FyDEOuAO2OU

commutation rectifier

single phase two diode rectifier. LR output. time constant = L/R >> 1/f.
D2 is free wheeling diode.

average output current = Vr/R = 2.5/100 = 0.025A.

adding L3, commutation takes place.

L3 << L1, output current remains constant, the blur in output happens when commutation takes place.

for ideal case, the firing angle = cos-1(1-2*pi*f*L1*Iout/Vin) ~= 1degree.

in reality, the firing angle is much larger, the clear trace in the diagram is produced in the period of commutation, because during commutation both diode are on; therefore, Voltage at port 2 of L3 is 0v. VL3 = Vin.

Asian Tsunami

http://www.youtube.com/watch?v=tA5IRvOon6g&feature=related

ADS

http://www.360doc.com/content/11/1108/11/6992572_162720433.shtml
http://edocs.soco.agilent.com/display/downloads/ADS+2009+Download#

2009 crack
http://ishare.iask.sina.com.cn/f/16958237.html

Kobe Earthquake

http://www.youtube.com/watch?v=y6S6U1HjqRY&feature=related

Zeebrugge Ferry Disaster

http://www.youtube.com/watch?v=TBCCOFc-rdE&feature=related

fuel cell economic

energy /ft3 natural gas

http://hypertextbook.com/facts/2002/JanyTran.shtml

natural gas price

http://www.gasalberta.com/pricing-market.htm

assume natural gas price $2.7/GJ. 

1000Btu = 37MJ.

$2.7/27.027KBtu. 

$0.1/KBtu. 

operational analysis

fuel cell:

29898KBtu/2190KWh.

13.652KBtu/KWh.

$1.3652/KWh.

TEG:

747447KBtu/2190KWh

341.3KBtu/KWh

$34.13/KWh

life span analysis

fuel cell:

$22000/unit

10year/unit

assume maintenance $2000/year

equipment + maintenance = $42000 over 10 years.

energy produced = 21900KWh over 10 years.

energy bill = $29897.88 over 10 years.

total cost $71897.88 over 10 years.

$3.28/KWh

将军称号

http://zhidao.baidu.com/question/217815449.html

Hotel Collapse Singapore

http://www.youtube.com/watch?v=DtYKCu9XBDA&feature=related

Runaway Train

http://www.youtube.com/watch?v=KYWX4-tG8uU&feature=related

三眼神童

http://www.youtube.com/watch?v=s-V7PwkEMVU

Texas Oil Explosion

http://www.youtube.com/watch?v=4I1GjRA3MZ8&feature=related