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全部话题 - 话题: extinction
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M****o
发帖数: 4860
1
他应该也不止三篇paper,只是这三篇是得奖原因吧
The entropy formula for the Ricci flow and its geometric applications
G Perelman - arXiv preprint math/0211159, 2002 - arxiv.org
Abstract: We present a monotonic expression for the Ricci flow, valid in all
dimensions and without curvature assumptions. It is interpreted as an
entropy for a certain canonical ensemble. Several geometric applications are
given. In particular,(1) Ricci flow, ...
Cited by 1079 Related articles All 39 versions Cite [PDF] from arxiv.org
Ricci f... 阅读全帖

发帖数: 1
2
Best of Last Year—The top Phys.org articles of 2017
December 19, 2017 by Bob Yirka, Phys.org report
Study reveals substantial evidence of holographic universe
A sketch of the timeline of the holographic Universe. Time runs from left to
right. The far left denotes the holographic phase and the image is blurry
because space and time are not yet well defined. At the end of this phase (
denoted by the …more
It was another great year for science, particularly physics, as evidenced by
a study conducte... 阅读全帖
I***i
发帖数: 14557
3
World's Leggiest Animal Found Near Silicon Valley (19楼有视频及更多照片)
"Extinct," 750-limbed millipede species sports claws, spins own "clothing."
Kate Andries
National Geographic News
Published November 14, 2012
The leggiest creature on Earth lives in California. But it's not a movie
star or a model. In fact, it's smaller than a human pinky finger. It's a 3-
centimeter-long (1.2-inch) millipede with 750 legs.
First seen by government scientists in 1928, Illacme plenipes—"the acme of
plentiful legs"—ke... 阅读全帖
w*******y
发帖数: 60932
4
Best Buy
couple of Horror & non-Horror Blu-rays on Sale this week
$10 Blu-rays
Frozen:
http://www.bestbuy.com/site/Frozen - Blu-ray Disc/1086039.p?id=2128263&skuId=1086039&st=Frozen blu-ray&lp=2&cp=1
Evil Dead:
http://www.bestbuy.com/site/Evil Dead - Blu-ray Disc/1364848.p?id=2119652&skuId=1364848&st=Evil Dead
Stephen King's The Mist:
http://www.bestbuy.com/site/Stephen King's The Mist - Widescreen Subtitle - Blu-ray Disc/8917112.p?id=1834711&skuId=8917112&st=The Mist
Ghost In The Shell 2.0:
htt... 阅读全帖
s*****r
发帖数: 11545
5
Because the north are dominant, and the nature will create an opinion of
beauty associated with dominance so that the the sepcies won't go extinct.
f*****g
发帖数: 9098
6
http://www.nytimes.com/2010/02/13/world/asia/13tiger.html?hp
GUILIN, China — The crowd-pleasing Year of the Tiger, which begins Sunday,
could be a lousy year for the estimated 3,200 tigers that still roam the
world’s diminishing forests.
Skip to next paragraph
The New York Times
China's largest tiger farm is in Guilin and holds 1,500 tigers.
With as few as 20 in the wild in China, the country’s tigers are a few gun
blasts away from extinction, and in India poachers are making quick work of
the t
c**i
发帖数: 6973
7
来自主题: ChinaNews版 - China's Elephants
Barbara Demick and Nicole Liu, China's elephants jostle for a little room;
The country only has 300 wild elephants left, squashed into a patchwork of
ever- smaller spaces. A wildlife park, and programs to help villagers view
them more kindly, may help stave off extinction. Los Angeles Times, Mar. 14,
2010.
http://www.latimes.com/news/nation-and-world/la-fg-china-elephants14-2010mar14,0,4881988.story
("many [Chinese] aren't even aware that wild elephants still live in their
country * * * In China
y****z
发帖数: 27
8
ofcourse. when mankind arised from ashes of K/T extinction, they separated
their nerve into different kinds.While muscles of leg involved even before
dinosaur that lived from 230 million years ago - 65 million years ago. Hope
I make it clear.
k***n
发帖数: 11247
9
来自主题: ChinaNews版 - 第三次世界大战正悄然逼近人类!
well.... there are so many species extinction happened in the history of the
earth, one of them is approaching again.
y*****6
发帖数: 9545
10
【 以下文字转载自 MiscNews 讨论区 】
发信人: Cnews (chinanews), 信区: MiscNews
标 题: [TTXW]新华社最新消息:华南虎照片系伪造
发信站: BBS 未名空间站 (Wed Nov 21 19:57:10 2007), 转信
国内中文版的还没有刊登出来,预计明天各媒体的头条非他莫数了!
South China tiger photos are "fake"

The controversy over the authenticity of photographs of the believed-to-be-extinct wild South China tiger seemed to have come to an end on Friday when a netizen posted online what he claimed was a "convincing proof" that the pictures are fakes -- a New Year picture of a tiger that hangs on the
l****z
发帖数: 47
11
all Chinese should feel grateful towards the early atom bomb scientists. the
true reason for this release action is because strategically jap knows very
clearly full confrontation means extinction of jap as a race. this is the
fundamental reason, no others.
given the alliance between us and jap, this is a good score China can get.
China needs to grasp the next 'atom bomb' technologies (laser weapon, space
tech) to prepare for the worst. In the end, only bullet talks not diplomats.
h**2
发帖数: 2841
12
next time you do this, let me know...let's prevent human from being extinct
c***s
发帖数: 70028
13
范冰冰(资料图)
据香港媒体报道,2014年“双冰”内地商演身价大斗法!近日内地公关界流出最新2014年中港台艺人在内地商演身价表,内地顶尖花旦“双冰”范冰冰及李冰冰再次斗得难分难解!自去年开始连续两年蝉联“福布斯中国名人榜”冠军的范爷再下一城,以每场商演酬金达135万元人民币(约168万港元)力压每场125万元人民币(约155万港元)的李冰冰,成为中港台商演身价第一人!
近年范爷积极冲出国际,与好莱坞男星“狼人”晓积文(Hugh Jackman)合演的超级英雄片《变种特攻:未来同盟战》(《X-Men:Days of Future Past》),目前正宣传得如火如荼,并于在本月底上映,随着范爷在国际上的知名度上升,成为她商演价上扬的主因,在电影上映后其身价势必更上一层楼。而“宿敌”李冰冰亦不甘示弱,她有份拍摄、曾在香港取景的好莱坞巨片《变形金刚:歼灭世纪》(《Transformers:Age of Extinction》),亦计划在下月上映,虽然“双冰”再战未知鹿死谁手,但肯定成她俩商演“叫价”的最大筹码。
章子怡凭交情先请得郁
另外两位内地顶级花旦章子怡及周迅,亦分别以120万元人民... 阅读全帖
G****s
发帖数: 249
14
It is really typical "talk science". "科学家们预测,除非海冰破裂,或者这个被
称为B09B的巨型冰山漂浮到别处,否则这些企鹅将在20年内全部消失。" if
extinction is predicted because of this iceberg, why not do something to
help these lovely penguin. Stop useless talking!
i***s
发帖数: 39120
15
张艺谋执导的《长城》(The Great Wall)目前在北美的票房只有3480万美元,该片在北美票房的“仆街”,也给未来中美合拍大片的前景蒙上了一层阴影。据多个消息人士称,这部电影最终的亏损额将高达7500万美元,环球公司至少将亏损1000万美元。
《长城》的制作费用为1.5亿美元,环球公司资助了该片大约25%的费用,其余费用则来自传奇影业、中影集团和乐视影业。不过环球公司还将负责《长城》全球的营销费用,这笔钱保守估计也要8000万美元以上。
《长城》在中国的票房为低于预期的1.71亿美元,全球票房最高为3.2亿美元,作为中国和美国联合制作的成本最高的影片,《长城》的表现大大低于投资者的预期。票房分析师杰夫·博克就说:“世界第一和世界第二电影市场的融合最终将会发生,但从美国国内来说,《长城》的票房表现却相当于引火烧身。”一位长期跟中国电影市场打交道的好莱坞高管也表示:“毫无疑问,这部电影是个败笔!”
对于环球公司来说,好消息是他们在这场失败中所占的份额相对较小,环球公司将从该片所有影院收入中得到大约10%的分销费,票房租金也将收回很大一部分,该片在影院的其它任何收入,则将由四个合作伙... 阅读全帖
y***y
发帖数: 198
16
☆─────────────────────────────────────☆
zhaigoudan (活佛法王) 于 (Fri Mar 6 15:56:35 2009) 提到:
如果中国亡国灭种,是怎么个消失法,被那些民族文化取代?
消亡的原因是内乱还是因为人口问题而崩溃,
一胎化的政策造成什么样的长远后果,
学术讨论一下,
☆─────────────────────────────────────☆
zhangjianshi (长见识) 于 (Fri Mar 6 16:21:40 2009) 提到:
As far as we see right now, this is more or less asking when
the mankind would extinct. Aliens? Broken Earth?
☆─────────────────────────────────────☆
hfyhl (I am legend) 于 (Fri Mar 6 17:16:33 2009) 提到:
我同意这个。现在掌握了核武器,至少这些土地是看
m******t
发帖数: 2416
17
In other news, Jimmy "Jimbo" Wales, the renowned co-founder of Wikipedia,
today announced Wikilithic, his latest attempt at preserving all knowledge
of humanity.
The goal of Wikilithic, according to Mr. Wales, is to replicate the content
on Wikipedia to a number of stone pillars.
"We are going to literally carve it in the stone." Mr. Wales said in an
interview. "so even if in the very likely case that human being would go
into extinction, some record of what we as a species have achieved would b
c**i
发帖数: 6973
18
来自主题: History版 - Jews in Ancient Kaifeng
Thank you, guys, for your discussion. Naturally I had no idea that Jews
existed in China. After reading the New York Times report, I was doubtful.
However, your lead send me into an inquiry.
(1) History of the Jews in China
http://en.wikipedia.org/wiki/History_of_the_Jews_in_China
Quote:
"Since their religious practices are functionally extinct, they are not
eligible for expedited immigration to Israel under the Law of Return unless
they explicitly convert.
"Sara Imas, the Shanghai-born daughter
w****j
发帖数: 5581
19
来自主题: History版 - 文明越发达,越快奔坟墓
Extinction therefore becomes a certainty when there are no surviving
individuals that are able to reproduce and create a new generation.
m***y
发帖数: 14763
20
通常, yes. That's the key word.
通常其实不通常, changes always happen, the definition of 强者和智者 would
also change over time. The best preparation is still diversity.
We are talking about 物种灭绝, in your example, it doesn't matter, at a
point of time, American black or African black are stronger. The simple fact
they are both in Africa and America makes them less likely to become
extinct.
c**i
发帖数: 6973
21
来自主题: History版 - A Dictionary of Akkadian Language
John Noble Wilford, After 90 Years, a Dictionary of an Ancient World; 28,000
words covering a period from 2500 BC to AD 100. New York Times, June 7,
2011.
http://www.nytimes.com/2011/06/07/science
/07dictionary.html?_r=1&scp=1&sq=assyrian%20dictionary&st=cse
(Chicago Assyrian Dictionary: "Actually, the basic language in question is
Akkadian")
Note:
(a) Sargon of Akkad
http://en.wikipedia.org/wiki/Sargon_of_Akkad
(also known as Sargon the Great; Akkadian Šarru-kīnu, meaning "the
true king" o... 阅读全帖
k*********g
发帖数: 791
22
来自主题: History版 - 为什么汉族的姓那么少?
the situation is more complicated than i thought. it's a population
extinction problem in stochastic process.

created.
i*****s
发帖数: 4596
23
刚查到句话,homo sapiens太惨了,呵呵
While modern humans share some nuclear DNA with the extinct Neanderthals,
the two species do not share any mitochondrial DNA,[90] which in primates is
always maternally transmitted. This observation has prompted the hypothesis
that whereas female humans interbreeding with male Neanderthals were able
to generate fertile offspring, the progeny of female Neanderthals who mated
with male humans were either rare, absent or sterile.[91]
c******i
发帖数: 4091
24
http://phys.org/news/2013-01-ancient-dna-reveals-humans-years.h
Ancient DNA reveals humans living 40,000 years ago in Beijing area related
to present-day Asians, Native Americans
January 21, 2013
Ancient DNA reveals humans living 40,000 years ago in Beijing area related
to present-day Asians, Native Americans Enlarge The leg of the early modern
human from Tianyuan Cave was used for the genetic analysis as well as for
carbon dating. Credit: MPI for Evolutionary Anthropology An international
team ... 阅读全帖
c******i
发帖数: 4091
25
http://phys.org/news/2013-01-ancient-dna-reveals-humans-years.h
Ancient DNA reveals humans living 40,000 years ago in Beijing area related
to present-day Asians, Native Americans
January 21, 2013
Ancient DNA reveals humans living 40,000 years ago in Beijing area related
to present-day Asians, Native Americans Enlarge The leg of the early modern
human from Tianyuan Cave was used for the genetic analysis as well as for
carbon dating. Credit: MPI for Evolutionary Anthropology An international
team ... 阅读全帖
w****j
发帖数: 5581
26
东部还有印第安保护区啊。比如最早接触欧洲殖民者的Wampanoags部落,现在在麻省
Duke County的Watuppa Wampanoag Reservation。2000年人口统计的时候就剩91个人了
。Wampanoags很悲愤的。在1970年,麻省Department of Commerce为纪念the Pilgrims
' Landing 350周年,邀请Wampanoag人Frank James(印第安名字Wamsutta)发
表演讲。但Frank James演讲稿没有通过审查,被噤声了(谁说只有共产党搞
censorship的)。如果麻省DOC给予他言论的自由,那么他在纪念仪式上将会发布如下
演讲(希望大家能耐心读下去,我觉得写得相当不错,白人挖人家坟的事情都是真的。
里面提到的印第安酋长的雕像应该还在,有在Plymouth的同学没有?):
I speak to you as a man -- a Wampanoag Man. I am a proud man, proud of my
ancestry, my accomplishments won by a str... 阅读全帖
o**********e
发帖数: 18403
27
来自主题: History版 - 我解:崖山以后无中国
Remember some background: before Eastern Han Dynasty, old Chinese books
were not originally written on paper, they were painstakingly carved into
bamboo sticks. They weigh a lot were very expensive. That's why old
written Chinese were so succinct. Most of the books had only a few copies.
Writers lived short lives and spent their lifetime to write. If other
literary Chinese found these
writing good, they in turn would spend a lot of time and money to make a
copy. It was a darwinian evol... 阅读全帖
o**********e
发帖数: 18403
28
来自主题: History版 - 我解:崖山以后无中国
蒙古元朝有一个特点就是100年统一中国而摧残中国文化,这种情况史无前例。
这事秦始皇也干过, 但是他只有15年统一的时间。 他残杀六国贵族学者, 销毁民间
藏诸子百家典籍, 将孤本存在自己私人图书馆。 他干得这一系列都让他问鼎中国文
明第一罪人。 他登天以后, 看看反秦人物的履历吧。
项羽年轻人“愤青新三届”,学的是家传楚国兵法,有领导力但不是理论上的好学生。
他看见秦始皇的私立图书馆就把它当秦始皇的财产一把火烧解气, 这把火成就
了中华文明第二罪人。 项羽的很多决策错误,小半是性格,大半绝对是他理论功
底薄弱造成。
刘邦,此人年轻时是战国末期的游侠可能在当地的大学里上过一些学(老三届),曾经
想追随信陵君。 社会履历丰富。 40多岁起兵。 萧何, 年纪跟刘邦差不多,也是
受惠先秦教育的老三届。 他哥俩合伙干的很多事都是在恢复被秦始皇唾弃摧毁的先秦
文化: 约法三章, 寻访诸子百家孤本 (很多已经失传), 保存秦朝残余的census
data.
韩信与张良都比刘邦萧何年轻一大截。 但是张良出身韩国贵族在民间秘密Chinese
School学得太公兵法。 ... 阅读全帖
o**********e
发帖数: 18403
29
来自主题: History版 - 我解:崖山以后无中国
Remember some background: before Eastern Han Dynasty, old Chinese books
were not originally written on paper, they were written on
collated sheets of bamboo sticks. They weigh a lot were very expensive.
That's why old
written Chinese were so succinct. Most of the books had only a few copies.
Writers lived short lives and spent their lifetime to write. If other
literary Chinese found these
writing good, they in turn would spend a lot of time and money to make a
copy. It was a darwinian ... 阅读全帖
S*******1
发帖数: 1860
30
来自主题: History版 - 生命的起源
你这信息太落后了。
连普遍认为最保守的天主教都接受进化论!John Paul II我记得是80年代末的时候就已
经接受进化论了。
天主教还有一个词就是ecotheology。我上次在水版谈第六次的mass extinction,大家
还冷嘲热讽的。现在都不知道谁是真正的老古董了。
o**********e
发帖数: 18403
31
不是日本人炮制出来的。 明朝人就意识到了。
这篇文从社会学看蒙元时期汉人的mass extinction的文化影响:
http://www.mitbbs.com/article_t/History/32104747.html
这篇文看蒙元崇佛毁道的文化影响
http://www.mitbbs.com/article_t/History/32150801.html
https://books.google.com/books?id=t_AYCgAAQBAJ&pg=PA702&lpg=PA702&dq=%E8%92%
99%E5%8F%A4+%E6%AF%81%E9%81%93%E8%97%8F&source=bl&ots=naRS0dHMnM&sig=
HXPAjpkJYJ60NZdGQGycrR1Db20&hl=en&sa=X&ved=0ahUKEwiN_
LyBtdnKAhVW5GMKHdQ3CmgQ6AEIHTAA#v=onepage&q=%E8%92%99%E5%8F%A4%20%E6%AF%81%
E9%81%93%E8%97%8F&f=false
李约瑟难题,炸药奖,道家的... 阅读全帖
o**********e
发帖数: 18403
32
来自主题: History版 - ai 会变成 人的God
一个故意不通过图灵测试的人工智能
2015-02-07 22:58 沈怀霜
一个故意不通过图灵测试的人工智能
2015-02-07 22:58 沈怀霜
阅读 133万+
人工智能很可能导致人类的永生或者灭绝,而这一切很可能在我们的有生之年发生。
上面这句话不是危言耸听,请耐心的看完本文再发表意见。这篇翻译稿翻译完一共三万
五千字,我从上星期开始翻,熬了好几个夜才翻完,因为我觉得这篇东西非常有价值。
希望你们能够耐心读完,读完后也许你的世界观都会被改变。
======================
内容翻译自http://waitbutwhy.com
原文地址:
The AI Revolution: Road to Superintelligence
The AI Revolution: Our Immortality or Extinction
转载请保留原文链接和翻译者 知乎 @谢熊猫君
=======================
我们正站在变革的边缘,而这次变革将和人类的出现一般意义重大 – Vernor Vinge
如果你站在这里,你会是什么感觉?
看上去非常刺激吧?但是你... 阅读全帖
c**********w
发帖数: 1746
33
来自主题: Military版 - 活的三叶虫多少钱? (转载)
呵呵
该虫在Permian–Triassic extinction时代基本灭绝
但是谁有知道活下来几个没可能呢
说个题外的,其实这个great dying时期以及恐龙灭绝时期恐龙灭绝的速度,比起现在
的物种灭绝速度,就像是乌龟和usain bolt赛跑,慢的不是一个数量级。人类现在就处于一个地球有史以来最快规模最大的物种灭绝时期啊
R********n
发帖数: 5904
34
They are mostly killed by 冉闽,and then Xianbei comes to the power.
Xianbei is yellow some how close to Korean. But Turkii is still there until Tang dynasty rised and drove them to ruin East Roman.
Those historic days were really exciting. Its also crucial days for Chinese to survive. Or, "Chinese" might have been extinct as Indians.
y****e
发帖数: 23939
35
鲜卑也有白种的一只
现在的云南白族就是白种鲜卑和当地混血的

until Tang dynasty rised and drove them to ruin East Roman.
Chinese to survive. Or, "Chinese" might have been extinct as Indians.
G***G
发帖数: 16778
36
来自主题: Military版 - 中国的问题不在民主
China's biggest problem lies not in whether it is democartic or freedom or
not, but in the followings:
1) China may extinct, due to the new threat of the world.
2) whether it is stable and united itself
3) deficient natural resource. for example, if China keeps selling rare
earth to other countries, what will left for its descendant.
I strongly suggest Chinese company to stop exporting rare earth now in order
to stimulate other country to develop substitutive material.
c********n
发帖数: 1065
37
1. 我前面所提到的基因差异是指y染色体的非重组区的差异(宗族基因)(或者随母系遗传的线粒体dna),这部分基因
不会因为通婚而发生变化,只会因为偶发的变异而发生变化(大约几十代一次)。
2. 对于非洲人的测序发现非洲人的宗族基因的不同版本比整个亚洲+欧洲+美洲的还要
多。因为宗族基因只由偶发变异产生新版本,如果认为这个变异几率是不变的话,人类
应该在非洲生活了非常长时间,远远超过在其他的大陆。
3.没有人否认其他智人的存在,neanderthal就是其中一个例子,他们生活在中亚和欧
洲大陆。他们也会制造工具,捕捉野兽,很多人认为他们一点不比非洲智人傻。但他们
最后因为冰川期extinct了,但是非洲智人在走出非洲的时候学会如何handle冰川期,
这也是为什么跑出来的基因是单一一个节点,意味着就一个族成功跑出来了,其他的估
计都死了。当然还有很多非洲智人选择留下来,没有往外跑。

类的
c********n
发帖数: 1065
38
http://explorermf.wordpress.com/2010/02/15/cloning-an-extinct-c
原来neanderthals是有铲形门齿的,行了,我可以歇歇了。
s**********1
发帖数: 305
39
The scientific method to extract DNA from biological samples about 38000
years ago was developed in Eddie Rubin lab at Lawrence Berkeley Natl Lab in
California. They initially used material from a kind of tree bears that
extincted at similar time to Neanderthals. The work attracted many news and
media to report at the time.
y***e
发帖数: 676
40
http://www.usatoday.com/news/nation/2011-02-26-wisconsin-deadli
Deadline nears to clear Wisconsin Capitol
MADISON, Wis. — The hundreds of people who have called the Capitol home
these past two weeks last week have formed a village, demonstrating a common
determination to sleep on marble, fight for a common cause and make a heck
of a lot of noise.
People here have papered the Capitol's pillars and walls with thousands of
signs, and they've run stands to distribute food and first aid. They've
cond... 阅读全帖
B**********0
发帖数: 122
41
来自主题: Military版 - 我不赞成抓艾未未
LOL, don't think that TG is more stupid than you are. If they try to
make aiweiwei silent, there must be a reason: Aiweiwei's opinions
will deprive their control over China.
Please read more about what Aiweiwei has done in the past and then
you will get a clue why TG wants to extinct people like Aiweiwei.
If they adopt your advice, i think TG will be over-thrown immediately.
LOL
L*********d
发帖数: 7037
42
http://en.wikipedia.org/wiki/Eastern_Cougar
Eastern Cougar (Puma concolor couguar) is considered by many puma biologists
to be a subspecies of the North American cougar, while others believe
recent genetic research suggests all North American cougars are a single
subspecies.[2][3]. The eastern subspecies was deemed extinct by a U.S. Fish
and Wildlife Service evaluation in 2011, while a parallel Canadian
organization has taken no position on the question.
u****n
发帖数: 7521
43
美国普通人非常痛恨过度的福利制度
主贴:
Tea Party 'tantrum' not good for nation
1:30 PM, Aug. 5, 2011 |
66Comments
http://www.stargazette.com/article/20110808/VIEWPOINTS03/108080
Thanks to the Tea Party. For them, it's my way or the highway — does that
remind you of your children's temper tantrums? Well, it worked!
Forget the poor, the elderly and the unemployed, while the wealthiest
continue to enjoy their quality of life at the expense of the rest of us.
God help us.
The Rev. and Mrs. Robert Adkins
Elmira
评论(被... 阅读全帖
V****n
发帖数: 651
44
楼主确实犯了一些严重错误。
先简要介绍一下燃烧知识,碳氢化和物不完全燃烧产物包含千百种不同成分。不论是烧
甲烷为主的天然气,还是以C8H18为主的汽油,还是C12H26为主的柴油,产生的成分都
是一样的,不同的只是各个成分的浓度。如果是富油燃烧,很容易形成碳颗粒(soot)
。碳颗粒刚形成的precursor particle大小只有2-3纳米,分子量大致为2000-5000之间
,然后迅速通过表面反应形成20-40纳米大小的颗粒(期间dehydrogenation过程导致碳
原子和氢原子比例达到9:1左右,基本上成为吸收光线最有效的blackbody黑体),分子
量达到100万左右。在这个过程中碳颗粒之间通过碰撞agglomeration过程形成类似
fractal的aggregate,这种aggregate大小由具体燃油化学反应时间,包括氧化时间长
短决定,包含从几十个到几万个颗粒,由于是三维结构fractacal dimension 只有1.8
左右, 所以直径(radius of giration)从接近1微米到大于10微米都有。好的柴油机氧
化过程完全,产生的aggregat... 阅读全帖
c***c
发帖数: 21374
45
☆─────────────────────────────────────☆
WanderingLA (飞扬) 于 (Tue Nov 22 14:50:45 2011, 美东) 提到:
我在洛杉矶,这边的能见度总体来讲比国内要好,但是呼吸道过敏的人很多很多。美国
人把这个认为是花粉过敏,但是事实上如果查一下该类疾病的发病记录就可以发现,70
年代之前鲜有人得这个病。
事实上70年代是洛杉矶空气污染最为严重的时期,著名的洛杉矶烟雾,是大气化学研究
中的重要课题,到现在也是。
相比国内各大工业城市以含硫煤燃烧引发的大气污染(这也有个名字:伦敦型烟雾),
洛城的空气污染主要是含氮氧化物所至。因为这种微粒不比硫化物那样对大气中的水那
么有亲和力,所以微粒不会在大气中生长得很大,因此基本上不会影响到城市的能见度
(要知道,干净的空气中也必须要有一定含量的各种微粒的,这些微粒对降水的形成非
常重要)。 但是氮氧化物在强烈的太阳照射下,会形成强氧化性的臭氧或者原子氧,
这才是呼吸道疾病的真凶!
洛城最近二十年来,不断地有炎热夏季路人在downtown 突然暴毙的记录,不要以为是
中暑哦!... 阅读全帖
l**i
发帖数: 8144
46
来自主题: Military版 - Anthropic principle
简单地讲 就是谋事在人 成事在天
认为社会发展沿着某个预定方向发展的理论 都是傻逼理论
--------------------------------------
Anthropic principle
From Wikipedia, the free encyclopedia
In astrophysics and cosmology, the anthropic principle is the philosophical
argument that observations of the physical Universe must be compatible with
the conscious life that observes it. Some proponents of the argument reason
that it explains why the Universe has the age and the fundamental physical
constants necessary to accommodate conscious life. As a ... 阅读全帖
H****g
发帖数: 14447
47
来自主题: Military版 - 毛泽东去世时纽约时报的讣告
1. 证实了毛泽东1975年写给周恩来这首诗。
《江山靠谁守·诉衷情》
当年忠贞为国筹,
何曾怕断头?
如今天下红遍,
江山靠谁守?
业未竟,
身躯倦,
鬓已秋。
你我之辈,
忍将夙愿,
付与东流?
2. 证实了1976年之前根本没有所谓饿死三千万或者大饥荒之说。
3. 毛泽东1975年的担心,或者说1964年的担心,都变成了现实。
4. 毛泽东唯一的遗产就是留给人民的造反精神,终将成燎原之火。
Mao Tse-Tung: Father of Chinese Revolution
By Fox Butterfield
Special to The New York Times
HONG KONG, Sept. 9--Mao Tse-tung, who began as an obscure peasant, died one
of history's great revolutionary figures.
Born at a time when China was wracked by civil strife, beset with terrible
poverty and enc... 阅读全帖
O*******d
发帖数: 20343
48
5.1亿年以前出现的鱼成了草履虫了。
EVOLUTION
The first fishes, and indeed the first vertebrates, were the ostracoderms,
which appeared in the Cambrian Period, about 510 million years ago, and
became extinct at the end of the Devonian, about 350 million years ago.
Ostracoderms were jawless fishes found mainly in fresh water. They were
covered with a bony armor or scales and were often less than 30 cm (1 ft)
long. The ostracoderms are placed in the class Agnatha along with the living
jawless fishes, the lamp... 阅读全帖
z****n
发帖数: 1933
49
对中国人吃点鱼翅大呼小叫。
照片在这里
http://tieba.baidu.com/p/1730788259
enmark is a big shame.
丹麦是我们的耻辱
The sea is stained in red and
海洋被血染成红色
in the mean while
但是
it’s not because of the climate effects of nature.
这不是由于自然气候导致的
It's because of the cruelty that the human beings (civilised human)
是因为残忍的人类(文明社会的人)
kill hundreds of the famous and intelligent Calderon dolphins.
残忍的杀害了上百头人类已知并且具有高智商的卡德龙海豚
This happens every year in Feroe Iland in Denmark .
这种事情每年都发生在丹麦的斐罗岛
In this slaughter the main participants are ... 阅读全帖
K**********n
发帖数: 1197
50

跟这帮自称理科的文科生物wsn实在纠缠不清楚。给丫们上点洋大人自己的说法吧,而
且都是学术圈的,已有reference一堆,其中一份是著名的兰德公司的报告。
另外,美国和澳洲已立法限制使用脑波扫描仪,拿脑波扫描仪扫本国公民已是联邦法的
重罪。不过这个比较难的是你无法证实谁接收了你的脑信号。所以立了法跟没立一个样。
Remote Mind Control Technology

Reprinted from SECRET AND SUPPRESSED: BANNED IDEAS AND HIDDEN
HISTORY, edited by Jim Keith, $12.95, available from
1-800-680-INET.
There had been an ongoing controversy over health effects of electromagnetic
fields (EMF) for years (e.g., extremely low frequency radiation and the
Navy's Project Sea... 阅读全帖
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