Friday, December 24, 2010

为了X

开学初:开学一周后: 
开学两周后:
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期中考试前:期中考试:
期中考试1天后:
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期末快到了: 得知考试时间: 
考前7天:
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考前6天:考前5天: 
考前4天:
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考前3天:考前2天: 
考前1天:
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考前一天晚上:考前1小时:
考试中:
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走出考场:     对某老师的想法……


说的严肃的事情有点多了,也来点调侃。不过这个时候几乎找不到不严肃的事情。考试考完了,很累。就那样呆呆地坐在在那儿,一动不动,却看别人还有那精力“打打杀杀”,好体力啊。整个那一场景然我想起一个成语:虚无缥缈。

站在天堂看地狱,人生就像情景剧;站在地狱看天堂,为谁辛苦为谁忙。

Green2

Green3

增加了一圈

记不清何时拍的了,看元数据吧

Friday, December 17, 2010

Run Run

很久没有写点东西了,果然是忙碌啊。一天到晚是连轴转。

不知不觉就到了十二月的后半段,在这么大的压力下,我感觉时间过得更快,以前还觉得一个星期中的后几天过得慢,可现在连星期几都不在乎了,当然这与新的假期政策有一定的关系,再说现在也顾不上太多了。

也就用这稀有的几天,做了一点好久没做的事 —— FSX。波士顿到纽约,特地选了一条短线路。看到熟悉的画面却又感到一些陌生,不知不觉又忘掉了一些东西,又把文档里的文章看了一遍才开始,剩下的疑问恐怕也没时间问了。自己又用相机拍了许多,只不过时间的限制还有这干旱的天气增添了一些困难。

希望,好久没说了。这半个多月的一些时候,我曾感觉自己已经失去了这个东西,可昨天突然明白,自己并没有真正的失去它,只是暗暗埋藏在心里。就像什么也没有,但确实存在。我知道,随着时间的流逝,这希望终会被某种现实所代替,不过到那时候,所有的事不知道会变成什么样。不管怎样,心中还是留着那一片净土。

Friday, December 3, 2010

Get Your Biology Textbook...and an Eraser!

©2010 Henry Bortman 
Geomicrobiologist Felisa Wolfe-Simon, collecting lake-bottom sediments in the shallow waters of Mono Lake in California. Wolfe-Simon cultured the arsenic-utilizing organisms from this hypersaline and highly alkaline environment. Credit: ©2010 Henry Bortman

One of the basic assumptions about life on Earth may be due for a revision thanks to research supported by NASA’s Astrobiology Program. Geomicrobiologist Felisa Wolfe-Simon has discovered a bacterium in California’s Mono Lake that uses arsenic instead of phosphorus in its DNA. Up until now, it was believed that all life required phosphorus as a fundamental piece of the ‘backbone’ that holds DNA together. The discovery of an organism that thrives on otherwise poisonous arsenic broadens our thinking about the possibility of life on other planets, and begs a rewrite of biology textbooks by changing our understanding of how life is formed from its most basic elemental building blocks. Astrobiology Magazine has the story.

Wolfe-Simon’s research is supported by NASA’s Exobiology and Evolutionary Biology (Exo/Evo) Program and the NASA Astrobiology Institute. Among the goals of these programs is determining the evolution of genes, metabolic pathways, and microbial species on Earth in order to understand the potential for life on other worlds. Wolfe-Simon’s discovery represents the first time in the history of biology that an organism has been found to use a different element to build one of its most basic structures. The paper appears in today’s issue of “Science Express“ and will subsequently be published in the journal Science.

砷终于代替了磷……这样,生命就不再是我们所说的生命了。很早以前就想也许外星生命并不像我们想的那样,那么遥远,那么神秘。也许它很微小,就在这地球上。现在,DNA中的磷都能被代替,那还有什么不可能的呢?