s*****t
发帖数: 1994 | 1 Henize 3-401: An Elongated Planetary Nebula
Explanation: How do dying stars eject their outer layers? Stars that create elegant planetary
nebulas like Henize 3-401, pictured above, are not unusual, causing speculation that, one day,
our own Sun may look like this. Henize 3-401 is one of the most elongated planetary nebulas
yet discovered, a particularly odd feat for a seemingly round star. Perhaps, some astronomers
hypothesize, the elongated shape gives a clue to the expulsion mechanism. Genesis |
|
s*****t
发帖数: 1994 | 2 Henize 3-401: An Elongated Planetary Nebula
Explanation: How do dying stars eject their outer layers? Stars that create elegant planetary
nebulas like Henize 3-401, pictured above, are not unusual, causing speculation that, one day,
our own Sun may look like this. Henize 3-401 is one of the most elongated planetary nebulas
yet discovered, a particularly odd feat for a seemingly round star. Perhaps, some astronomers
hypothesize, the elongated shape gives a clue to the expulsion mechanism. Genesis |
|
B**F
发帖数: 38 | 3 Physics of the Earth and Planetary Interiors
Volume 44, Issue 4, December 1986, Pages 293–303
"A dense polymorph of Ca3(PO4)2: a high pressure phase of apatite
decomposition and its geochemical significance"
John Kyohei Murayamaa, Sento Nakaib, Manabu Katob, Mineo Kumazawa
请发到b*******[email protected]
包子酬谢！ |
|
z**x
发帖数: 3629 | 4 http://blogs.youwheel.com/2015/03/31/acura-sh-awd-comprehensive
Acura SH-AWD: A Comprehensive Analysis
Written By Editor on 2015-03-31, Posted in Car Chat, Technical Talk | 2
comments
The Acura SH-AWD system (short for: Super Handling-All Wheel Drive) is often
described ambiguously in most automobile literature. Some articles even
said it is an enhanced version of the Honda VTM-4, which is incorrect.
2012_Acura_TL_Rear
In this article, we will analyze the SH-AWD in detail, focusing on these
thre... 阅读全帖 |
|
发帖数: 1 | 5 继错过大航海时代以后，中国即将错过大航天时代
2018年06月29日 14:46 爱情之所以为爱情多久
上个月，美国有线电视台 Syfy 宣布取消旗下科幻美剧《苍穹浩瀚》（The Expanse）
第四季续订的消息一经发出，就引起了追剧粉丝的热烈讨论。不过，紧接着，亚马逊和
蓝色起源创始人、亿万富翁杰夫·贝索斯就在国际太空发展大会（International
Space Development Conference）上亲自宣布接盘该剧。
图丨《无垠的太空》剧照
《苍穹浩瀚》中的场景设定在 200 年后的未来：人类在月球和火星上建立了定居点，
并开始在位于火星和木星之间的小行星带（Asteroid Belt）建立殖民地。人类对太空
探索的渴望由来已久，而殖民小行星带则是近年来的一个新的关注点，最主要的原因是
盯上了其上面埋藏的丰富矿藏。
目前，Deep Space Industries 公司准备向目标开采行星发射载人开采器，英国的
Asteroids Mining 公司则准备向富含白金矿藏的行星发射小型太空开采器。导演詹姆
斯·卡梅隆担任顾问的 Planetary Resources 公... 阅读全帖 |
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h*****9
发帖数: 6643 | 6 没听说过是你自己无知。这只能说明你是个很容易被骗的无知之徒， 你又要凭你自己的无知骂人，你又无耻了。
揭露 BIG-BANG 是披着科学外衣的宗教，这在10年前就有很多文章了。
THE "BIG BANG" IS JUST RELIGION DISGUISED AS SCIENCE
by Michael Rivero
Once upon a time, a long time ago, there was this guy named Aristotle.
Pretty sharp fellow; he thought up a lot of good things. But, occasionally
he made a mistake.
One mistake he made was to toss an orange up in the air and watch it come
straight back down to his hand. Aristotle reasoned that if he was moving,
the orange would have flown... 阅读全帖 |
|
D***0
发帖数: 5214 | 7 Chevy的官网上是说汽油机是做REx的啊。而且这个REx engine在volt上有84hp， i3那
个则小很多，只有35hp。Also
http://www.greencarreports.com/news/1094005_2014-bmw-i3-rex-vs-
Different philosophies
Although both Volt and i3 are classified as range-extended electric cars,
Chevy and BMW engineers came to their drafting boards with very different
marching orders from management.
The Volt has an EPA all-electric range of 38 miles, enough to cover about 80
percent of typical daily commutes, according to GM. The 84-hp range-
extender engin... 阅读全帖 |
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t******g
发帖数: 17520 | 8 http://www.spacew.com/pipermail/forum/2004-August/000675.html
It is a measure of how disturbed the Earth's magnetic field is. It varies in
value from 0 to about 400, in linear steps. It is computed from the actual
deviations (non-quiet-time deviations) measured at a number of geomagnetic
observatories (mostly mid-latitude ones) around the world. A value of 30
represents minor storm conditions. Values of 50 represent major storm
conditions and values greater than 100 represent severe storm condit... 阅读全帖 |
|
d********t
发帖数: 29 | 9 http://www.nasonline.org/site/PageServer?pagename=News_May_3_20
News
Date: May 3, 2011
FOR IMMEDIATE RELEASE
National Academy of Sciences
Members and Foreign Associates Elected
The National Academy of Sciences today announced the election of 72 new
members and 18 foreign associates from 15 countries in recognition of their
distinguished and continuing achievements in original research.
Those elected today bring the total number of active members to 2,113 and
the total number of foreign associat... 阅读全帖 |
|
j**********k
发帖数: 296 | 10 http://www.nasonline.org/site/PageServer?pagename=News_May_3_20
Date: May 3, 2011
FOR IMMEDIATE RELEASE
National Academy of Sciences
Members and Foreign Associates Elected
The National Academy of Sciences today announced the election of 72 new
members and 18 foreign associates from 15 countries in recognition of their
distinguished and continuing achievements in original research.
Those elected today bring the total number of active members to 2,113 and
the total number of foreign associates to... 阅读全帖 |
|
k*****n
发帖数: 417 | 11 【 以下文字转载自 Biology 讨论区 】
发信人: jurassicpark (猪拉稀·怕渴), 信区: Biology
标 题: NAS elected 72 new members
发信站: BBS 未名空间站 (Tue May 3 10:48:47 2011, 美东)
http://www.nasonline.org/site/PageServer?pagename=News_May_3_20
Date: May 3, 2011
FOR IMMEDIATE RELEASE
National Academy of Sciences
Members and Foreign Associates Elected
The National Academy of Sciences today announced the election of 72 new
members and 18 foreign associates from 15 countries in recognition of their
distinguished and continuing achieve... 阅读全帖 |
|
l*******G
发帖数: 1191 | 12 Postdoctoral Scholar
Department of Earth and Planetary Sciences, Johns Hopkins University.
Johns Hopkins University invites applications for the Morton K. Blaustein
Postdoctoral Scholar in the Earth and Planetary Sciences.
We seek an outstanding individual with a recent Ph. D. from any area of
the Earth and Planetary Sciences. The successful candidate will be free to
pursue his/her independent research interests, but projects that
complement our existing research programs will be given special
c |
|
r****y
发帖数: 1437 | 13 HDF format is adopted in early 1990s for EOS satellites,
not necessary a format used in planetary science.
The convention of level0, 1A, 1B, etc is also largely
in earth remote sensing community, though some planetary folks
might use it as well.
Many Mars data are openly available, google PDS planetary.
Some from Europe Space Agency (ESA) are not released yet.
What do you wanna? |
|
k*****n
发帖数: 417 | 14 【 以下文字转载自 Biology 讨论区 】
发信人: jurassicpark (猪拉稀·怕渴), 信区: Biology
标 题: NAS elected 72 new members
发信站: BBS 未名空间站 (Tue May 3 10:48:47 2011, 美东)
http://www.nasonline.org/site/PageServer?pagename=News_May_3_20
Date: May 3, 2011
FOR IMMEDIATE RELEASE
National Academy of Sciences
Members and Foreign Associates Elected
The National Academy of Sciences today announced the election of 72 new
members and 18 foreign associates from 15 countries in recognition of their
distinguished and continuing achieve... 阅读全帖 |
|
c*********r
发帖数: 19468 | 15 尻，刚说SH-AWD比Twinster优越，不经意间，现版的SH-AWD已经改成和Twinster大同小
异的了：
Development of High Efficiency Next-Generation SH-AWD Rear Drive Unit
We introduced a Super Handling-All Wheel Drive (SH-AWD) rear drive.
Featuring left & right identical planetary gear sets with electromagnetic
clutch packs, it varied rear side-to-side torque distribution using an
Accelerator device, achieving rear wheel “speed increasing ratio” up to 5.
7%. Later, a simpler SH-AWD rear drive unit was introduced in mid-2006, for
other AW... 阅读全帖 |
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J**i
发帖数: 166 | 16 Since completing the Astronomia nova, Kepler had intended to compose an
astronomy textbook.[53] In 1615, he completed the first of three volumes of
Epitome astronomia Copernicanae (Epitome of Copernican Astronomy); the first
volume (books I-III) was printed in 1617, the second (book IV) in 1620, and
the third (books V-VII) in 1621. Despite the title, which referred simply
to heliocentrism, Kepler's textbook culminated in his own ellipse-based
system. The Epitome became Kepler's most influential ... 阅读全帖 |
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c***l
发帖数: 238 | 17 都是北大生物系毕业的。
本月上些时候，北大数学系毕业的郁彬，伯克利统计系计算机系教授，
当选为人文与科学院院士。
发信人: ipdang (iphone5), 信区: Biology
标 题: New elected NAS members
发信站: BBS 未名空间站 (Tue Apr 30 11:05:44 2013, 美东)
http://www.nasonline.org/news-and-multimedia/news/2013_04_30_NA
The National Academy of Sciences announced today the election of 84 new
members and 21 foreign associates from 14 countries in recognition of their
distinguished and continuing achievements in original research.
Those elected today bring the total number of active mem... 阅读全帖 |
|
b*******y
发帖数: 4304 | 18 How Do We Know When Voyager Reaches Interstellar Space?
Sept 12, 2013
Artist's concept of Voyager's distances
You Are Here, Voyager: This artist's concept puts huge solar system
distances in perspective. The scale bar is measured in astronomical units (
AU), with each set distance beyond 1 AU representing 10 times the previous
distance. Each AU is equal to the distance from the sun to the Earth. It
took from 1977 to 2013 for Voyager 1 to reach the edge of interstellar space.
Image Credit: NASA/J... 阅读全帖 |
|
b********n
发帖数: 38600 | 19 AngloZionist: Short primer for the newcomers
http://vineyardsaker.blogspot.com/2014/09/anglozionist-short-primer-for-newcomers.html
Why do I speak of "AngloZionists"? I got that question many times in the
past, so I will make a separate post about it to (hopefully) explain this
once and for all.
1) Anglo:
The USA in an Empire. With roughly 1000 overseas bases (depends on how you
count), a undeniably messianic ideology, a bigger defense offense budget
then the rest of the planet combined, 16+ s... 阅读全帖 |
|
发帖数: 1 | 20 An asteroid could destroy humanity like it did dinosaurs. A Hopkins team has
a plan to save the world.
Andy Cheng, chief scientist at the Johns Hopkins Applied Physics Laboratory
in Laurel, is co-lead investigator on the Double Asteroid Redirection Test
mission, NASA's first test of a defense mission to deflect an asteroidt by
smashing a spacecraft into it. (Kim Hariston/Baltimore Sun)
By Tim Prudente February 4 at 6:53 PM
A team of scientists, astronomers and engineers meets weekly in a confere... 阅读全帖 |
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l****z
发帖数: 29846 | 21 The FBI is looking for a star Ohio State professor from China with NASA ties
who disappeared
Natasha Bertrand and Peter Jacobs
Sep. 9, 2015, 1:44 PM 17,732 14
A world-renowned Ohio State University (OSU) professor who had access to
restricted defense information as part of his work with NASA is under
investigation by the FBI for failing to disclose his ongoing connections to
Chinese scientists, The Columbus Dispatch has reported.
Professor Rongxing Li, 56, unexpectedly resigned from h... 阅读全帖 |
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t*****0
发帖数: 264 | 22 ☆─────────────────────────────────────☆
fjcruiser (FJ) 于 (Fri Jan 21 01:47:10 2011, 美东) 提到:
四驱是一个很复杂的概念，广大不明真相的群众很容易看一些无良厂商制作的
youtube录像受骗上当。一个四驱车到底怎么样，*至少*要从以下八个方面看：
公路驾驶指标(AWD)
AWD类型: 适时(on-demand) / 全时 (full-time)
中差: 无/ 开放 / 限滑
后差: 开放 / 限滑 / 其它(SH-AWD)
前差: 开放 / 限滑
越野驾驶指标(4WD, 4x4)
低速档: 无/有
中差锁(分动箱锁): 无/有
后差锁: 无/有
前差锁: 无/有
下面，我们以一些本版常讨论的车型为例，分析一下这些四驱车到底都是什么货。
（待续）
☆─────────────────────────────────────☆
fjcruiser (FJ) 于 (Fri Jan 21 01:57:46 2011, 美东) 提到:
四驱系统案例：Gra... 阅读全帖 |
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d***a
发帖数: 13752 | 23
marketing
我再查了一下VTM-4和SH-AWD的资料，SH-AWD和VTM-4在机械上有一个关键的差别。VTM-
4的设计是用multi-plate clutch直接把动力传到左/右后轴上。SH-AWD的设计，是用
multi-plate clutch把动力传到一个planetary gear（行星齿轮组），再传到左/右轴
上。Multi-plate clutch是套在planetary gear的外环上。
我以前一直有个疑问，SH-AWD怎么能用锁定左右multi-plate clutch的方式做到full-
time AWD（哪怕是90/10的split）。这种方式类似于锁定中后差的4WD，在公路上行驶
，前后轮和左右轮的差速怎么办？现在知道了：行星齿轮组的一个主要作用就是提供差
速。所以VTM-4只能做到part-time AWD，SH-AWD能做到full time。
RL版的SH-AWD还在中轴上做了一个后轮加速设备，也是一个clutch加一个行星齿轮组，
把后轮最高轮速提高5.7%。这样转弯时后轮走得快，转弯就更敏捷。MDX上的SH-AWD没
有这个加速设备。直... 阅读全帖 |
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j*******n
发帖数: 10868 | 24 http://legacygt.com/forums/showthread.php/explanation-continuou
There is a lot of confusion about the differences between the various Subaru
AWD systems:
Continuous (for 5MT)
Active (for 4EAT)
VTD (for 5EAT)
availability or non-availability of Rear LSD
So heres an attempt to explain the differences....
1. Continuous AWD System:
The manual transmission’s all-wheel drive is referred to as a continuous
all-wheel drive system. It uses a center differential located inside the
transmission case that i... 阅读全帖 |
|
b*****t
发帖数: 840 | 25
一看就知道你不懂什么是hybrid
第一，本田没有虚标，为什么？见第二
第二，accord hybrid技术比pruis更先进，动能转化效率更高，
为啥？
本田的这代accord是最新的hybrid技术，过去的本田hybrid只有一个电机，安装在发动
机和变速箱之间。
新的hybrid有两个电机，和prius的非常类似，但prius用一组planetary gear来连接两
组电机形成多种动力输出组合，honda最新的hybrid只有两组电机，省去了planetary那
组东西，所以理论上有更好的动能转化效率。
但是，hybrid本身的动力来源依然是petrol engine，不懂的人看到混合动力这几个字
就觉得好像这车不比petrol车多几倍的MPG都不好意思拿出来见人，但是hybrid本身只
通过回收制动所损失的一部分动能还有减少engine空转还有连续性的transmission来提
高MPG。所以hybrid只有在市区才有MPG的优势，上了高速和普通车没有什么差别。
hybrid的电池和气温关系也很大，冬天肯定MPG比夏天少。综合的因素影响MPG非常的多
，但是基本上大多数人... 阅读全帖 |
|
B*Z
发帖数: 7062 | 26 SH AWD里面有至少两个planetary gear set （RL有三个），和一般有机械中差的齿轮
组一样多。我觉得可以理解为把中差里面的齿轮和后差速器里面的一部分分成了两个
planetary gear set代替，分别放在左右后半轴。配置上来说比有中差的一样厚道，外
加实现了后轴torque vectoring功能。造价比有中差的还贵。如果说错了，希望高手指
正。 |
|
B*Z
发帖数: 7062 | 27 而且SH AWD从变速箱，到分动箱，到后差速器的hypoid gear，到planetary gear sets
，到半轴，全部是齿轮连接。是硬连接。扭矩常态扭矩分配是按照差速器和planetary
gear set的比例分配的。这个也和有机械中差的AWD一样的。电磁摩擦片限滑和制动也和
最好的机械AWD一样。所以SH AWD看起来和有机械中差的AWD是一样的。如果想要常态50
：50分配，改变tranfer case里面的齿轮，和后差速器和行星齿轮的比例就好了。本田
现在的比例完全是因为是前驱车而设计的，看不出来为什么不可以搞的偏向后轴。 |
|
B*Z
发帖数: 7062 | 28 主要说的是中央差速器。这个是网上一个文章。附件是现在的subaru中央差速器分类。
There is a lot of confusion about the differences between the various Subaru
AWD systems:
? Continuous (for 5MT)
? Active (for 4EAT)
? VTD (for 5EAT)
? availability or non-availability of Rear LSD
So heres an attempt to explain the differences....
1. Continuous AWD System:
The manual transmission’s all-wheel drive is referred to as a continuous al
l-wheel drive system. It uses a center differential located inside the trans
mission... 阅读全帖 |
|
b*****t
发帖数: 840 | 29
二货又出来丢人现眼，几巴掌还你这傻二还没吃够，丫二货还狂吠吃屎？
我老跟你这二货说hydraulics，你这二货说planetary gear，我老说planetary gear，你
这二货就扯DCT，无知煞笔到极点，
尼玛就让你德国主子喂你几口屎你就开心了
http://www.volkswagen.co.uk/technology/transmissions-and-drivet
Mechatronics - electronics and mechanics in one unit
Clutches and gearbox units are operated hydraulically by the gearbox
mechatronics (a combination of mechanics and electronics) housed in the DSG.
The electronic transmission control unit, sensors and hydraulic control
unit form one compact unit.
The co... 阅读全帖 |
|
d***a
发帖数: 13752 | 30 这是Honda这个设计的优点吧，没有了那个planetary齿轮组，驱动效率更高。Accord能
做到差不多和Prius相同的gas mileage，效果还是很明显的。
不过说Honda没有变速箱有误导性质，因为很多别的hybrid也没有传统意义上的变速箱
。Honda只是更进一步，不用planetary齿轮组来变速。
...
... |
|
l*****n
发帖数: 2446 | 31 http://www.xici.net/b11777/d74263569.htm
英文占星书籍list(zz)
1.＜The Best of Charles Jayne＞
书名：The Best of Charles Jayne
作者：Charles Jayne
内容：专论的汇编，包括"Horoscope Interpretation Outlined"、"Introduction to
Locality Astrology"、"Parallels:Their Hidden Meaning"、"The Technique of
Rectification"。
评价：☆☆☆☆☆(属於相当专业性的研究书籍)
购买：可直接向AFA(美国占星家协会)购买。
2.＜Rules For Planetary-Pictures＞
书名：Rules For Planetary-Pictures
作者：Ludwig Rudolph；译者：Richard Svehla
内容：以三颗行星或敏感点的组合，来论断可能会发生的事件。
评价：☆☆☆☆☆(研究「汉堡占星学派」的必备书籍)
购买：同上。
3.＜The T |
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t***y
发帖数: 182 | 33 source:
http://www.astrologyzone.com/forecasts/monthly/virgo_full.php
Virgo Horoscope for March 2012
By Susan Miller
Early March will be simply magical, the best planetary alignments you have
seen in years. The challenges you at faced some point during the years 2007
to mid-2011 were hard, but this month will be just the opposite - a gorgeous
bouquet of planetary vibrations, sent straight to you by a loving universe.
The universe did not forget you, dear Virgo.
A golden triangle - called a "gran... 阅读全帖 |
|
k****w
发帖数: 3753 | 34 General Micro Tips:
1. Are your zealots in front of your stalkers?
2. Are your low-health units in the back of your army before you attack?
3. Are your immortals attacking armored units?
4. Are your colossus attacking clumped up units? If the entire enemy army is
clumped, than focus on attacking light units (marines, hydras, zealots)
5. When defending your ramp,
A. Are you units in a concave at the top of your ramp?
B. Are you cutting his army into bite-size pieces?
C. Are your... 阅读全帖 |
|
t*******n
发帖数: 4445 | 35 http://slashdot.org/article.pl?sid=04/06/19/2112244
An anonymous reader writes "Related to the future of Mars, NASA released the
transcript of an expert panel which debated terraforming the red planet.
Planetary scientists including NASA's Planetary Protection Officer, John
Rummel, and science fiction writers (Kim Robinson, Arthur C. Clarke, and Greg
Bear) chimed in. When asked if Mars should be transformed to a place where
humans could walk without life support suits ("naked"), Sir Clarke respo |
|
c***l
发帖数: 238 | 36 还有一个复旦转学到美国的。
Majored in Biochem, 1980-83, Fudan University, Shanghai
B.A. in Biochem, 1985, SUNY at Stony Brook
发信人: ipdang (iphone5), 信区: Biology
标 题: New elected NAS members
发信站: BBS 未名空间站 (Tue Apr 30 11:05:44 2013, 美东)
http://www.nasonline.org/news-and-multimedia/news/2013_04_30_NA
The National Academy of Sciences announced today the election of 84 new
members and 21 foreign associates from 14 countries in recognition of their
distinguished and continuing achievements in original research.
... 阅读全帖 |
|
s******o
发帖数: 298 | 37 Scientists at this week's Lunar and Planetary Science Conference propose that
a long-lost fifth terrestrial planet could have induced a period of
bombardment in the early solar system.
by Vanessa Thomas
About 3.9 billion years ago — when our solar system was still very young —
a torrent of debris rained down on Earth's moon. At least that's the story
pieces of the moon (lunar meteorites and samples returned by Apollo and
Russian Luna missions) have been telling planetary scientists for decades. |
|
s******o
发帖数: 298 | 38 An aging spacecraft has its final hurrah.
by Richard Talcott
Having absorbed more than three times the radiation it was designed to, the
Galileo spacecraft seems to experience more bad days than good. But for one
glorious stretch last October, Galileo performed flawlessly as it swept past
Jupiter’s moon Io. Planetary scientists presented the latest findings gleaned
from this flyby on Thursday to their colleagues at the 33rd Lunar and
Planetary Science Conference in Houston, Texas.
Rosaly Lopes o |
|
s*****t
发帖数: 1994 | 39 Gomez's Hamburger: A Proto-Planetary Nebula
Explanation: What, in heaven, is that? Sometimes astronomers see things on the sky they
don't immediately understand. In 1985 this happened to Arturo Gomez, and the object became
known as Gomez's Hamburger for its distinctive yet familiar shape. After some investigation,
the object was identified as a proto-planetary nebula, a gas cloud emitted by a Sun-like star just
after its central hydrogen fuel has all been fused to helium. Gomez's Hamburger is on |
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s*****t
发帖数: 1994 | 40 Halo of the Cat's Eye
Credit: R. Corradi (Isaac Newton Group), D. Goncalves (Inst. Astrofisica de Canarias)
Explanation: The Cat's Eye Nebula (NGC 6543) is one of the best known planetary nebulae in the
sky. Its haunting symmetries are seen in the very central region of this stunning false-color picture,
processed to reveal the enormous but extremely faint halo of gaseous material, over three
light-years across, which surrounds the brighter, familiar planetary nebula. Made with data from
the |
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s*****t
发帖数: 1994 | 41 NGC 6369: The Little Ghost Nebula
Credit: Hubble Heritage Team, NASA
Explanation: This pretty planetary nebula, cataloged as NGC 6369, was discovered by 18th
century astronomer William Herschel as he used a telescope to explore the constellation
Ophiucus. Round and planet-shaped, the nebula is also relatively faint and has acquired the
popular moniker of Little Ghost Nebula. Planetary nebulae in general are not at all related to
planets, but instead are created at the end of a |
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s*****t
发帖数: 1994 | 42 Celebrating Hubble With NGC 6751
Credit: A. Hajian (USNO) et al., Hubble Heritage Team (STScI/ AURA), NASA
Explanation: Planetary nebulae can look simple, round, and planet-like in
small telescopes. But images from the orbiting Hubble Space Telescope
have become well known for showing these fluorescent gas shrouds of dying
Sun-like stars to possess a staggering variety of detailed symmetries
and shapes. This composite color Hubble image of NGC 6751 is a beautiful
example of a classic planetary n |
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S***n
发帖数: 330 | 43 Astronomers from McMaster University in Hamilton, Ontario find that "dead
zones"- which typically extend out to 13 astronomical units from the central
star of an extrasolar planetary system - can significantly slow planetary
migration so that planets are not lost to the systems. This release
summarizes work to be described in a press conference at the American
Astronomical Society meeting in Calgary, Alberta on June 5, 2006, and in an
invited talk at a scientific session during the meeting.
Surv |
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S***n
发帖数: 330 | 44 http://news.yahoo.com/most-extreme-space-discoveries-2012-12084
Astronomical discoveries in 2012 have reshaped what we know about the
universe and pushed some instruments to the very limits of their observing
power.
Scientists discovered a galaxy that harbors an enormous central black hole
17 billion times more massive than the sun. Another research group spotted a
scorching-hot rocky planet in the closest star system to our own. Meanwhile
,the records for most massive galaxy cluster and most di... 阅读全帖 |
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T**********t
发帖数: 1604 | 45 http://www.huffingtonpost.com/2010/12/02/nasa-could-announce-arsenic-eating-bacteria_n_790954.html
WASHINGTON — The discovery of a strange bacteria that can use arsenic as
one of its nutrients widens the scope for finding new forms of life on Earth
and possibly beyond.
While researchers discovered the unusual bacteria here on Earth, they say it
shows that life has possibilities beyond the major elements that have been
considered essential.
"This organism has dual capability. It can grow with eit... 阅读全帖 |
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d*****r
发帖数: 2583 | 46 Zhang Feng以前的老板:
Deisseroth, Karl; associate professor of bioengineering and psychiatry,
Stanford University, Stanford, Calif.
竟然是Associate Professor...就当选院士了，史无前例的Rising Star...
http://www.nasonline.org/news-and-multimedia/news/2012_05_01_NA
News from the National Academy of Sciences
Date: May 1, 2012
FOR IMMEDIATE RELEASE
National Academy of Sciences Members and Foreign Associates Elected
The National Academy of Sciences today announced the election of 84 new
members and 21 foreign associates ... 阅读全帖 |
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i****g
发帖数: 3896 | 47 http://www.nasonline.org/news-and-multimedia/news/2013_04_30_NA
The National Academy of Sciences announced today the election of 84 new
members and 21 foreign associates from 14 countries in recognition of their
distinguished and continuing achievements in original research.
Those elected today bring the total number of active members to 2,179 and
the total number of foreign associates to 437. Foreign associates are
nonvoting members of the Academy, with citizenship outside the United States
.
N... 阅读全帖 |
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m*****e
发帖数: 129 | 48 Rank Full Journal Title Total Cites Journal Impact Factor
1 CA-A CANCER JOURNAL FOR CLINICIANS 20,488 131.723
2 NEW ENGLAND JOURNAL OF MEDICINE 283,525 59.558
3 NATURE REVIEWS DRUG DISCOVERY 25,460 47.12
4 LANCET 195,553 44.002
5 NATURE BIOTECHNOLOGY 48,650 43.113
6 NATURE REVIEWS IMMUNOLOGY 31,545 39.416
7 NATURE MATERIALS 72,306 38.891
8 NATURE REVIEWS MOLECULAR CELL BIOLOGY 36,784 38.602
9 NATURE 627,846 ... 阅读全帖 |
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q***l
发帖数: 177 | 49 News from the National Academy of Sciences
Date: May 1, 2012
FOR IMMEDIATE RELEASE
National Academy of Sciences Members and Foreign Associates Elected
The National Academy of Sciences today announced the election of 84 new
members and 21 foreign associates from 15 countries in recognition of their
distinguished and continuing achievements in original research.
Those elected today bring the total number of active members to 2,152 and
the total number of foreign associates to 430. Foreign associat... 阅读全帖 |
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c***l
发帖数: 238 | 50 速度够快！
标 题: 北大生物系校友邓兴旺陈雪梅当选美国科学院院士！
发信站: BBS 未名空间站 (Tue Apr 30 11:56:12 2013, 美东)
还有一个复旦转学到美国的。
Majored in Biochem, 1980-83, Fudan University, Shanghai
B.A. in Biochem, 1985, SUNY at Stony Brook
发信人: ipdang (iphone5), 信区: Biology
标 题: New elected NAS members
发信站: BBS 未名空间站 (Tue Apr 30 11:05:44 2013, 美东)
http://www.nasonline.org/news-and-multimedia/news/2013_04_30_NA
The National Academy of Sciences announced today the election of 84 new
members and 21 foreign associates from 14 countries in rec... 阅读全帖 |
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