2009年11月28日 星期六

DHTML code for closing current window in Web Browser [2008-11-29]

 

 

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DHTML code for closing current window in Web Browser, close, Internet Explorer

 

Homework: Try to find out a way to download the text shown on this web page?

 
Homework: Try to find out a way to download the text shown on this web page?
 
 

2009年11月25日 星期三

On Glutathione ii. A Thermostable Oxidation-Reduction System. [1922](IR92)


On Glutathione ii. A Thermostable Oxidation-Reduction System.

Sir Frederick Hopkins, The Nobel Prize in Physiology or Medicine 1929

By F. Gowland Hopkins and M. Dixon.
(From the Biochemical Department, University of Cambridge, Cambridge,
England.)
(Received for publication, September 12, 1922.)

A tissue washed until it no longer "respires" will, when suitably treated and supplied with glutathione, again take up oxygen and yield carbon dioxide.

Such part of its reducing power and respiratory activity as is regained by a washed tissue on the restoration of glutathione remains almost unaffected when the tissue is heated to
100°C. or even thoroughly extracted with boiling water.



On glutathione - ii. A thermostable oxidation-reduction system [1922](IR92) (1_of_3).png
On glutathione - ii. A thermostable oxidation-reduction system [1922](IR92) (2_of_3).png
On glutathione - ii. A thermostable oxidation-reduction system [1922](IR92) (3_of_3).png
Sir Frederick Hopkins (1861~1947), The Nobel Prize in physiology or Medicine 1929; discoverer of glutathione (GSH)(IR90).jpg
The Nobel Prize in Physiology or Medicine 1929, Sir Frederick Gowland Hopkins, University of Cambridge; Christiaan Eijkman, Utrecht University, Netherlands.jpg


Glutathione, depletion, cancer.jpg

Glutathione, depletion, cancer.jpg
 

Glutathione, depletion at HighWire.jpg

Glutathione, depletion at HighWire.jpg

http://en.wikipedia.org/wiki/Antioxidant

http://en.wikipedia.org/wiki/Antioxidant

www.Google.com

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www.Google.com

Wiki, antioxidant

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2009年11月5日 星期四

Fall 2009 Mid Exam of Network Planning [2009-11-08]


Fall 2009 Mid Exam of Network Planning [2009-11-08]

中華民國
98 11 08


' Begin: Fall 2009 Mid Exam of Network Planning [2009-11-08]

1.
請略述 [交換式集線器 (Switching Hub)] [集線器 (Hub)] 的主要差異為何?就安全上而言,何者較好些?

2.
為什麼我們說 [乙太網路 (Ethernet)] 是屬於一種 [廣播網路 (broadcasting network)] ?請略述它如何傳送訊號。

3. [
封包交換 (packet switching)] [線路交換 (circuit switching)] 有何不同?請略述它們如何運作。

4.
在網路相關的書中,常會看到類似「...要傳送的 [封包 (packet)] ...」和「... [訊框 (frame)] 傳送到...」的文字;到底 [封包 (packet)] [訊框 (frame)] 是一樣的東西嗎?還是有什麼差別?請稍微解釋一下。

5.
請略述 [路由器 (router)] 主要的功能為何?

6.
在今天,當人們把許多電腦不斷地連上 [網際網路 (Internet)] 時,僅管帶來了許多方便,卻也對電腦的安全造成了重大的威脅。請略述會造成此一現象的根本原因為何?

7.
請略述是那些主要的技術,使得我們可以只用一台電腦,以及一條高速的網路連線,就可以同時和100個人,透過 [網際網路 (Internet)] 來進行語音通話?

8.
請略述TCPUDP通訊協定有何不同,以及它們是分別被設計來做哪些方面的應用?

9.
從科技的角度來看,為什麼一般而言,使用光纖進行通訊遠比使用無線通訊來得安全?

10. What is Cloud Computing (
雲端運算)?

' End: Fall 2009 Mid Exam of Network Planning [2009-11-08]