r*s
发帖数: 2555 | 1 A neutron walks into a bar and asks "how much for a beer?" The bartender
says, "for you? no charge." |
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d*******y
发帖数: 322 | 2 高级笑话
[在 rbs (jay) 的大作中提到：]
：A neutron walks into a bar and asks "how much for a beer?" The
bartender
：says, "for you? no charge."
：........... |
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A******u
发帖数: 1279 | 3 at this moment, neutrino walks through the door and says: hey free beer? can
I get that too?
for you? hmmm, that would depend on the flavor. answers the bartender,
pouring beer for the neutron. |
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s*x
发帖数: 8041 | 4 a positron came in for a beer, the bartender turned around and asked the
neutron: I thought I heard someone asking for a beer, hmmm, where's that
electron? he forgot to take his $100 bill...
$ |
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u****q
发帖数: 24345 | 5 不知道neutron star爆炸会不会也产生引力不哦 |
|
发帖数: 1 | 6 A neutron walks into a bar and asks "how much for a beer?" The bartender
says, "for you? no charge."
Two atoms are walking down the street.
One says "shit, I lost an electron!"
"Are you sure?"
"Yeah, I'm positive"
Physics quote of the day: Anything that doesn't matter has no mass.
According to Einstein's Theory of Relatives, the probability of in-laws
visiting you is directly proportional to how much you feel like being left
alone.
There is a sign in Munich that reads, "Heisenberg might have sle... 阅读全帖 |
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r*s
发帖数: 2555 | 7 尼玛87篇参考文献就不能加一篇施教授或能教授的CNS？
References
1. Ruska, E., Nobel Lectures, Physics 1981-1990, Tore Frängsmyr and
Gösta Ekspong, Eds. (1993) World Scientific Publishing, Singapore
2. Marton, L. (1934) Electron microscopy of biological objects. Nature
133, 911-911
3. Althoff, T., Mills, D. J., Popot, J. L., and Kühlbrandt, W. (2011)
Arrangement of electron transport chain components in bovine mitochondrial
supercomplex I1III2IV1. The EMBO Journal 30, 4652-4664
4. Letts, J. A., Fied... 阅读全帖 |
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t*****T
发帖数: 226 | 8 it's called neutron scattering, and it has existed for over 60 years...
the real problem is the possibility for crystalization |
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k****u
发帖数: 1686 | 9 声明
1.此资料中内容是六爻占卜术的最基础的知识；
2.我能整理此资料，并不代表我的技术高，这只是个人机缘的关系。
3.资料中的内容、观点与论坛无关。
整理此资料的目的
1.为了让不懂六爻占卜的朋友对其有所了解；
2.给想学习六爻占卜的易友一个入门的基础资料；
3.为了大家相互交流与个人卦技的提高。
资料内容简述如下：
第一部分 为占卜术基础内容，此中内容为所有占卜方法都使用的基础知识；
第二部分 为六爻占卜术的基础内容，其为六爻占卜方法专用的基础知识。
第三部分 为六爻占卜中一些常见的基础问题的个人浅见。
学习方法：
学习占卜不是一天两天的事儿，我们以六爻为例，你学会了起卦的方法，这并不代
表你就会解卦了，有的人学习了十几年，几十年也没有看到门，可是有的人学了几个月
甚至几天就可以分析简单的卦了，有的人不服气，有的人不明白，其实这其中除了个人
的机缘与命运不同以外，还有个学习方法的问题。（以下内容为一家之言，仅供参考）
1、学习六爻占卜术，首先要有一个稳定的心态，因为时下派系繁多，又都有各自
的一套技法，而我们这些新人也没有办法去分析那一家对那一家错，所以我建议... 阅读全帖 |
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G******e
发帖数: 9567 | 10 DNA Deoxyribonucleic Acid
DNA Department(al) Network Administrator
DNA Does Not Apply
DNA Genentech, Inc (stock symbol)
DNA Did Not Attack (Dana Carvey)
DNA Did Not Attend
DNA Designated National Authority
DNA Do Not Ask
DNA Did Not Answer
DNA Data Not Available
DNA Defense Nuclear Agency
DNA Directia Nationala Anticoruptie (Romanian)
DNA Do Not Answer (cell phone)
DNA Do Not Approve
DNA Distributed interNet Applications
DNA Digital Network Archite... 阅读全帖 |
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c*********s
发帖数: 85 | 11 Throwing a twist into the discussion: why create "man" the way we are rather
than just another part of creation?
Specifics differences between "man" and the rest of creation include:
- soul
- free will
- made in likeness of God the creator
Could have just created neutron stars and played marbles. (actually that
might be fun) |
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P****S
发帖数: 2286 | 12 （二）经部的观点
经部关于微观世界的观点，基本上与一切有部相似。二者之间的差别，在于经部进一步
将时间、空间、速度、方向等判定为非实有。
何谓空间？所谓空间，就是在一个范围内没有被任何物体所占据的位置，这种没有被占
的位置，就是空间，除此以外，并没有空间的存在。如果有东西占据了某个位置，这个
位置就没有空间了；当物体被移走后，腾出来的位置就是空间。由此可见，所谓的空间
，实际上是假立的、不实在的。
再说时间，不论是一分钟或一小时，一个月或一年，都只不过是物质变化的过程而已，
除此之外，并不存在所谓的时间。我们只能通过世上万物的变化来判定时间，譬如根据
气候的变化过程，而建立起春夏秋冬的时间概念等等。这种物质变化的过程，我们称之
为时间。
我们可以设想，如果太空中没有任何星球的话，我们能算定时间吗？不能。由此可知，
时间只不过是以物质变化为基础，由人的意识而增上安立的法。
虽然现代物理学对时间也有不同说法，到底时间存不存在，它的本体究竟为何，都是学
术界激烈讨论的课题之一，但经部的论师们却认为，时间只是人的一种概念而已，除了
物质的变化以外，实际上并不存在独立的时间本质。
那么速度又是什... 阅读全帖 |
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X*****r
发帖数: 2521 | 13 con@
materials having structures ordered down to the molecular level. This goal
can't be reached by conventional "top-down" approaches and remains as the "
holy grail" using synthetic
Applied Chemistry, Chinese Academy of Sciences (1999); Ph.D University of
Massachusetts, Amherst (2004); Postdoc University of Pennsylvania and Cold
Neutron for Biology and Techn |
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G****e
发帖数: 11198 | 14 introduction:
http://chem.berkeley.edu/people/faculty/xu/xu.html
group page:
http://www.mse.berkeley.edu/groups/xu/index.htm
Research Interests: Polymers, Biomaterials, Materials Chemistry
The key to future technology is the design and fabrication of functional materials having structures ordered down to the molecular level. This goal can't be reached by conventional "top-down" approaches and remains as the "holy grail" using synthetic materials such as block copolymers. In addition, there have ... 阅读全帖 |
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X*****r
发帖数: 2521 | 15 con@
materials having structures ordered down to the molecular level. This goal
can't be reached by conventional "top-down" approaches and remains as the "
holy grail" using synthetic
Applied Chemistry, Chinese Academy of Sciences (1999); Ph.D University of
Massachusetts, Amherst (2004); Postdoc University of Pennsylvania and Cold
Neutron for Biology and Techn |
|
u***n
发帖数: 1263 | 16 昨天是poster的最后一天,想想,闲着也是闲着,于是过去走走,
一去,都是physical和organ的,看也看不懂,同去的一个博士后倒
是见人就问,还博古采今,旁征博引的问,觉得无聊就在过道里站着,
一瞥就看到一个mm比较眼熟,一看不是chortle是谁,过去一看,
比以前愈发pp了,伊人也消瘦了不少,他乡遇故知,上去一阵狂聊,
不时有一些不时时务者上前问chemistry的问题,chortle mm现在也是
科学狂人,轻轻抛出small angle neutron scattering就可以吓死不少人.
谈的正高兴的时候,突然杀出一个黑壮,chortle花容失色,连连解释:这是我
同学,并向我介绍,这个是我bf.
于是我落荒而逃,后事不表. |
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T********l
发帖数: 1670 | 17 受一位德高望重的老先生委托，查了一下浙大解放前的部分nature论文，由于文献资料
不全，难免有遗漏。
1)Pei.S.C.(浙江大学生物系贝时璋教授). Constitution of the salivary gland
chromosome of Chironomussp. Nature. 1945, 155:482.
2)Wang,K.C.(浙江大学物理系王淦昌教授) and Tsao,H.L. Relationship between
nuclear force and gravitational force. Nature. 1945, 155:512-513.
3)Wang,K.C.(浙江大学物理系王淦昌教授). Radioactivity of the neutron. Nature.
1945, 155:574.
4)Hsin P. Soh(浙江大学物理系束星北教授)Relativenature of electromagetic
radiation. Nature. 1946, 157:809.
5)Ho,T.L.(浙江大学物理系何增禄教授), and W.S.Lu |
|
a*****a
发帖数: 438 | 18 use transaction
and in your client side program, you can detect whether
commit transaction is successful, if it fails, resend it.
~{!>~} ~{TZ~} neutron (~{VPWS~}) ~{5D4sWwVPLa5=~}: ~{!?~} |
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f*****m
发帖数: 416 | 19 open daylight, 已经开源了。VMW也是 gold member, 已经放在 openstack neutron
的ML2 下面了 |
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f*****m
发帖数: 416 | 20 open daylight, 已经开源了。VMW也是 gold member, 已经放在 openstack neutron
的ML2 下面了 |
|
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s********z
发帖数: 5411 | 22 多谢
刚才跳了Corsair Neutron GTX 240GB，现在又纠结了，不知道是不是该等８４０ ｐ
ｒｏ，不知道２４０ｇｂ是不是有点小
ｓｉｇｈ... |
|
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s******o
发帖数: 298 | 24 Another pulsar turns up with an age that defies conventional wisdom.
by Richard Talcott
A thousand years ago, most astronomers thought Earth lay at the center of the
cosmos. One hundred years ago, most thought the universe consisted of a
single galaxy. And just two years ago, most would have said they understood
how neutron stars and pulsars evolve. Conventional wisdom, it seems has taken
another beating.
For the second time in the past two years, astronomers have found a pulsar
that doesn’t con |
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s******o
发帖数: 298 | 25 By Govert Schilling
April 24, 2002 | Using NASA's Rossi X-ray Timing Explorer satellite,
astronomers have found definitive proof that low-mass X-ray binary stars are
the precursors of millisecond pulsars. New observations of two X-ray binaries
provide convincing evidence that neutron stars are, indeed, whipped up to high
spin rates by mass transfer from a lower-mass companion star.
About 150 low-mass X-ray binaries (LMXBs) are known. In all cases, the X-rays
are due to gas from the companion sta |
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s*****t
发帖数: 1994 | 26 M51: X-Rays from the Whirlpool
Explanation: Fresh from yesterday's episode, a popular pair of interacting galaxies known
as the Whirlpool debut here beyond the realm of visible light -- imaged at high energies by
the orbiting Chandra X-ray Observatory. Still turning in a remarkable performance, over 80
glitering x-ray stars are present in the Chandra image data from the region. The number of
luminous x-ray sources, likely neutron star and black hole binary systems within the
confines of M51, is |
|
s*****t
发帖数: 1994 | 27 The Crab Nebula Pulsar Shrugs
Credit: J. Hester (ASU), CXC, HST, NRAO, NSF, NASA
Explanation: How does a city-sized neutron star power the vast Crab Nebula? The
expulsion of wisps of hot gas at high speeds appears to be at least part of the answer.
Yesterday time-lapse movies taken from both the Chandra X-ray Observatory and the
Hubble Space Telescope were released showing a wisp of gas moving out at about half the
speed of light. Wisps like this likely result from tremendous electri |
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s*****t
发帖数: 1994 | 28 Accretion Disk Simulation
Credit: Michael Owen, John Blondin (North Carolina State Univ.)
Explanation: Don't be fooled by the familiar symmetry. The graceful spiral structure seen
in this computer visualization does not portray winding spiral arms in a distant galaxy of
stars. Instead, the graphic shows spiral shock waves in a three dimensional simulation of an
accretion disk -- material swirling onto a compact central object that could represent a white
dwarf star, neutron star, or bla |
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s*****t
发帖数: 1994 | 29 （五）中子星、超新星和黑洞(Neutron Star, Supernova and Black Hole)
离开主序时质量超过八倍太阳的恒星能制造重原子核。在温度升到六亿开氏度时，
碳保不住了，相互猛撞并聚合成氖和镁。一条“生产线”就此建立，因为每个新的热核
反应都能释放更多的能量，使温度升得更高，从而导致新的转变。然而核转变并不能就
无限制地继续，反应的洪流最后都朝着一个元素汇集：铁。铁是大质量恒星核心的最后
灰烬。与此同时恒星还不断地膨胀其外壳以调节平衡，它会膨胀到一个异常巨大的尺度
，成为红超巨星。红超巨星是宇宙中最大的恒星。如果把这样一个星放在太阳系中心，
它将吞没包括远在五十亿公里外的冥王星在内的所有行星。
虽然铁核的温度在十亿度以上，却没有能量从中流出。它不足以使超巨星维持引力
平衡，铁核就会被压得更紧密，使其中的电子处于简并态。当简并电子的巨大压力能暂
时地支持外层的重量时，恒星活动会出现一个间歇。但是当核心里铁和简并电子的质量
超过一点四个太阳质量时，电子已简并的核突然塌陷，剧烈收缩，在十分之一秒内温度
猛升到五十亿度。涌出的光子带有的巨大能量将铁原子核炸开，蜕变成氦原 |
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r******y
发帖数: 21907 | 30 Scientists watch black hole born in split-second light flash
After 30 years, they finally caught one. Scientists on Monday have for the f
irst time detected and pinned down the location of a so-called "short" gamma
-ray burst, lasting only 50 milliseconds.
The burst marks the birth of a black hole. The astronomy community is buzzin
g with speculation on what could have caused the burst, perhaps a collision
of two older black holes or two neutron stars. A multitude of follow-up obse
rvations are |
|
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d*****r
发帖数: 2583 | 32 其实中国１９４９之前还是有很多single author CNS paper的，都是大牛，我感觉现
在的所谓大牛跟他们比起来还是要弱很多，比如王淦昌的那篇Nature好像是诺贝尔奖level的发
现。。。。我觉得这里面应该有从来没发过CNS的。不过，中国未来的希望就靠你了。。。
这个是从饶毅那个解放前的CNS文章里面选的：
12) Woo, Y. H. (清华大学物理系吴有训) (1930). Intensity of total
scattering of x-rays by monatomic gases. Nature 126: 501-502.
13) Woo, Y. H. (清华大学物理系吴有训) (1931). Scattering of x-rays by
mercury vapour. Nature 127:556-557.
22) Li, J.-C. (燕京大学生物系李汝祺) (1937). A six chromosome Ascaris
in Chinese horses. Science 86:101-102.
25) Yu, S. H. (英国曼彻斯特大学... 阅读全帖 |
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g********e
发帖数: 46 | 33 谢谢大家的建议，明天跟老板说说看她的反应（她在外地）。因为已经据了两个
academic lab, 不知道她还会不会给我写推荐信。
另外也请大家参谋一下关于工作选择：如果是你会选哪一个？
（1） Oak Ridge National lab的薄厚offer，他们pay的还挺好，做neutron protein
crystallography 的，虽然地方在中部，但是我看重他们的多样化课题和跟facility
user 打交道的机会。
（2）Genentech 的薄厚，用SAXS 研究抗体formulation。因为Genentech 的地理优势
，LD 找工作会比较容易，但是Genentech的起薪比National lab低不说，那里生活成本
也高，
还有一个让我很难做决定的就是National lab支持H1b, Genentech只支持 J1。但是两
个都是两年的薄厚，都还要重新找工作。
National lab的这周末应该必须给答复了，Genentech的可以拖拖，选择（3） 拖着
Genentech看能不能去Kobilka 实验室面试，然后再决定。
欢迎大家给建议或拍砖，我和... 阅读全帖 |
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s******y
发帖数: 17729 | 34 【 以下文字转载自 Military 讨论区 】
发信人: rbs (jay), 信区: Military
标 题: 诺委会太不像话了 (转载)
发信站: BBS 未名空间站 (Wed Oct 4 10:58:51 2017, 美东)
发信人: rbs (jay), 信区: Joke
标 题: 诺委会太不像话了
发信站: BBS 未名空间站 (Wed Oct 4 10:23:52 2017, 美东)
尼玛87篇参考文献就不能加一篇施教授或能教授的CNS？
References
1. Ruska, E., Nobel Lectures, Physics 1981-1990, Tore Frängsmyr and
Gösta Ekspong, Eds. (1993) World Scientific Publishing, Singapore
2. Marton, L. (1934) Electron microscopy of biological objects. Nature
133, 911-911
3. Althoff, T., Mi... 阅读全帖 |
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o********e
发帖数: 34 | 35 Link: http://www.che.udel.edu/postdoc.html
POSTDOCTORAL RESEARCHER position is available immediately with Dr. Yun Liu
and Professor Norman J. Wagner in the Center for Molecular and Engineering
Thermodynamics and the Center for Neutron Science of the Department of
Chemical Engineering at the University of Delaware. Initial appointment will
be for one year, with renewal subject to both satisfactory progress and the
availability of funds.
QUALIFICATIONS: We are seeking a motivated postdoctoral rese |
|
|
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m***c
发帖数: 1403 | 38 lol. H is a disaster for neutron diffraction. |
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m***c
发帖数: 1403 | 39 all the X-ray gives only lattice of electron, photon-nuclei interaction is
negligible,while neutron diffraction gives the lattice of nuclei.
high hkl (high Q) only means smaller d-spacings from the heavy elements can
be detected.
密度 |
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a****n
发帖数: 3082 | 40 you mean neutron scattering?
If yes, it is easy. |
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d********O
发帖数: 1196 | 41 Pore morphology and pore surface roughening in rocks: a small-angle neutron
scattering investigation
Volume 37, Number 5 / March, 2002
DOI 10.1023/A:1014391629262
Please send to D********[email protected], if this is more convenient for you.
Thanks again and have a nice day! |
|
|
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e****n
发帖数: 165 | 44 中国人可以去national lab 作x-ray or neutron scattering么？
中国属于sensitive country么？ |
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j*********5
发帖数: 6221 | 45 I remembered you call yourself Formulation Chemist
and your specialty has nothing to do with x-ray or neutron scattering ah |
|
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h***o
发帖数: 350 | 47 Lattice vibration spectra. Part LXXXII. Brucite-type hydroxides M(OH)2 (M =
Ca, Mn, Co, Fe, Cd) — IR and Raman spectra, neutron diffraction of Fe(OH)2
H.D. Lutz
H. Möller,
M. Schmidt
Journal of Molecular Structure
Volume 328, 1 December 1994, Pages 121–132
Thank you very much. |
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a*****c
发帖数: 53 | 48 Please help on these papers
Basic research interests in nanoscale radiation sensing
Calvin Shipbaugh
Proc. SPIE 8373, Micro- and Nanotechnology Sensors, Systems, and
Applications IV, 83730G (May 1, 2012); doi: 10.1117/12.918026
Graphene field effect transistor as a radiation and photodetector
Ozhan Koybasi, Isaac Childres, Igor Jovanovic, Yong P. Chen
Proc. SPIE 8373, Micro- and Nanotechnology Sensors, Systems, and
Applications IV, 83730H (May 1, 2012); doi: 10.1117/12.919628
Characteris... 阅读全帖 |
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n*****e
发帖数: 19 | 49 Postdoctoral Openings at Center for Nanophase Materials Sciences, Oak Ridge
National Laboratory
Two postdoctoral positions are available immediately in the Macromolecular
Nanomaterials Group at the Center for Nanophase Materials Sciences at the
Oak Ridge National Laboratory (ORNL), focusing on theory and simulation of
dynamics and rheology of dynamically-bonded polymers [e.g. Nature Materials
10, 14-27 (2011)], in collaboration with the synthetic chemists and
experimental polymer physicists in t... 阅读全帖 |
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