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全部话题 - 话题: scatter
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发帖数: 1
1
橡树岭国家实验室散裂中子源诚招有物理和计算背景的博后。
课题为运用高性能计算增强非弹性散射中子谱仪的分辨率。年薪约$65k。
https://recruiting.ornl.gov/sap/bc/webdynpro/sap/zornl_hrrcf_c_post_doc?sap-
language=EN&sap-client=010#
Job Posting Title
Postdoctoral Research Associate in Super-Resolution Inelastic Neutron
Scattering
Purpose
The Neutron Sciences Directorate (NScD) at Oak Ridge National Laboratory (
ORNL) operates the High Flux Isotope Reactor (HFIR), the United States'
highest flux reactor based neutron source, and the Spallation Neutron Source
(... 阅读全帖

发帖数: 1
2
橡树岭国家实验室散裂中子源诚招有物理和计算背景的博后。
课题为运用高性能计算增强非弹性散射中子谱仪的分辨率。年薪约$65k。
https://recruiting.ornl.gov/sap/bc/webdynpro/sap/zornl_hrrcf_c_post_doc?sap-
language=EN&sap-client=010#
Job Posting Title
Postdoctoral Research Associate in Super-Resolution Inelastic Neutron
Scattering
Purpose
The Neutron Sciences Directorate (NScD) at Oak Ridge National Laboratory (
ORNL) operates the High Flux Isotope Reactor (HFIR), the United States'
highest flux reactor based neutron source, and the Spallation Neutron Source
(... 阅读全帖
a**********y
发帖数: 2367
3
来自主题: Faculty版 - how to visualize 3D scattered data?
I have some data that has two principle factors (a and b), but after
considering these two there will still be some scattering because there are
also some other minor factors. What is the most effective way of visualizing
the influence of the two variables as well as the scattering? I cannot do a
surface or contour plot because there is still scattering.
What I can think of is plotting several 2D scattered plots, with a on the x-
axis and a different b for each plot, but that will take up a lot ... 阅读全帖
b********6
发帖数: 16
4
大坑,别跳了.....inverse scattering国内很多做的人都是数学系出身的,当然你要
去UIUC做inverse scattering还是可以的,那里氛围很好,不过大部分军方的项目不知
道你能不能做; 另外医学成像是Inverse scattering的出路之一了
C***S
发帖数: 175
5
来自主题: Macromolecules版 - Scattering A in B or B in A
More specifically, can X-ray or Neutron scattering tell the difference of
polymer in water from water in polymer system. In my case, it is Nafion
ionomer.
Some groups think even in dry state, Nafion still has the polymer in water
structure. I think it is weird. As the Babinet priciple states: due to the
autocorrelation property of scattering, we cannot tell the positive or negtive
image. So A in B case will give the same scattering as B in A.
Am I right?
S******y
发帖数: 1123
6
Does anybody know how to adding colors to data points in scatter plot in R?
I have the following R data frame -
Voter_Name, Education_years, Income, Registered
Ricky, 18, 40000, Y
Lisa, 20, 34000, N
Jon, 10, 35000, Y
...
I am doing a scatter plot in R for those data points - Income vs.
EducationYears.
I would also like to using different colors to differentiate whether that
data point is a Registered Voter or not.
Does anybody know how to adding colors to data points in scatter plot in R?
Thanks
S******y
发帖数: 1123
7
I have x, y two variables and I can successfully plot them in R -
plot(x,y)
It looked OK. However, it would be nice to change it into a contour-
like scatter plot (or density scatter plot or heat scatter plot).
Can anybody tell me a simple way to do that?
Thanks!!
T***T
发帖数: 85
8
【 以下文字转载自 Chemistry 讨论区 】
发信人: TROST (楚斯特), 信区: Chemistry
标 题: 关于NEUTRAL SCATTERING测定溶液中分子组装行为的问题
发信站: BBS 未名空间站 (Fri Nov 27 23:19:03 2009, 美东)
请教大牛:
NEUTRAL SCATTERING是如何测定溶液中分子组装行为的,例如可以确定分子在水溶液中
组装成“rod”,但不知如何解释给出这样的结果? 不胜感谢!合理解答的包子奉送
a*****e
发帖数: 4577
9
来自主题: Physics版 - diffraction和scattering 有什么区别
如果讨论电磁波的话
按照wiki上的说法
Diffraction is normally taken to refer to various phenomena which occur when
a wave encounters an obstacle.
Scattering is a general physical process where some forms of radiation, such
as light, sound, or moving particles, are forced to deviate from a straight
trajectory by one or more localized non-uniformities in the medium through
which they pass.
如果平面波照射到一个点阵上,这个叫做diffraction还是scattering?
l**n
发帖数: 908
10
来自主题: Physics版 - diffraction和scattering 有什么区别
对于你说的情况,即可以包括单晶的X-ray diffraction,也可以包括相应的Raman
scattering。
个人理解,diffration更强波的概念,scattering则更多强调个体(比如单个电子或光
子)的behavior,尤其是inelastic effect存在的时候。比如说,XRD关心的是反射光
形成的pattern所反映的点阵结构,而Raman谱则反映能量由于非弹性效应引起的变化。
当然,wave和个体之间是有联系的。
l**n
发帖数: 908
11
来自主题: Physics版 - diffraction和scattering 有什么区别
有道理,diffraction确实是考虑从不同点出来的电磁波间相互作用的结果,所以说“
波”的概念在这里很重要,而在能量上一般都是属于弹性范畴。而scattering应该说考
虑的是单个的行为,其关注的可以是弹性行为,但更多的是非弹性行为。虽然说
scattering的研究是以统计为主,但各事件之间一般是看作相对独立,统计是在各结果
的基础上,而不涉及事件之间的相互作用。
B*******y
发帖数: 198
12
van de Hulst's book (1957) is only for single scattering!!!
My suggestions, based on my 5+ years experience in this field:
The solutions are greatly affected by the size parameter (=2pi*r/lamda) of
your spheres.
If you know the positions of each sphere, and if the size parameters of the
spheres are much larger than ~50, use ray tracing to get the total scattered
field. See Andre Macke's papers. Search "Michael Mishchenko" on google, then
on his web page you'll find links to codes and papers.
If
E*******1
发帖数: 3464
13
来自主题: Faculty版 - how to visualize 3D scattered data?
an easy way is to plot it with Matlab or Origin, they have built in
scattered 3D plot tools.

are
visualizing
a
x-
.
d*******n
发帖数: 1566
14
有没有人读过这篇paper!
http://prb.aps.org/abstract/PRB/v58/i19/p12899_1
Phys. Rev. B 58, 12899–12907 (1998)
Phonon dispersion and Raman scattering in hexagonal GaN and AlN
Abstract
References
Citing Articles (122)
Download: PDF (182 kB) Buy this article Export: BibTeX or EndNote (RIS)
V. Yu. Davydov*, Yu. E. Kitaev, I. N. Goncharuk, and A. N. Smirnov
Ioffe Physical Technical Institute, St. Petersburg 194021, Russia
J. Graul, O. Semchinova, and D. Uffmann
LFI Universitat Hannover, Schneiderberg 32, 30167
s********l
发帖数: 648
15
定好这周末去的,可是天气预报都是Scattered T-Storms,有过类似经验的童鞋们,这
样子能玩好吗?谢谢!
v****s
发帖数: 1112
16
需要用matlab做几个插图,请问达人:
如何在scatter plot里面的(x,y)位置插入位图?
类似于:
l**********1
发帖数: 5204
17
来自主题: Biology版 - 如何做microarray的scatter plot图?
pls refer
> posted on FRIDAY, JULY 6, 2012
Fix Overplotting with Colored Contour Lines
I saw this plot in the supplement of a recent paper comparing microarray
results to RNA-seq results. Nothing earth-shattering in the paper - you've
probably seen a similar comparison many times before - but I liked how they
solved the overplotting problem using heat-colored contour lines to indicate
density. I asked how to reproduce this figure using R on Stack Exchange,
and my question was quickly answered b... 阅读全帖
T***T
发帖数: 85
18
请教大牛:
NEUTRAL SCATTERING是如何测定溶液中分子组装行为的,例如可以确定分子在水溶液中
组装成“rod”,但不知如何解释给出这样的结果? 不胜感谢!合理解答的包子奉送
a****n
发帖数: 3082
19
you mean neutron scattering?
If yes, it is easy.
f*******i
发帖数: 8492
20
实验室里的light scattering photometer是一套很老的设备了,灯泡已经不好用了,
需要更换
原配的灯泡是GE H85A3/UV (Mercury Ultraviolet Lamp)
这里有这个灯泡的详细信息:
http://www.lamptech.co.uk/Spec%20Sheets/GE%20H85A3UV.htm
现在的问题是,我联系过GE公司,被告知这个灯泡已经停产了。我尝试用该型号在网上
搜索,能搜到的仅有的3个私人卖家都回复说已经没货了(包括欧洲的卖家)。
我看了一下这个灯泡的信息,原厂说明上说这个灯泡是从民用的mercury vapor lamp改
进过来的。因为民用的mercury vapor lamp的外层玻璃是要阻止UV radiation的,而这
个灯泡仅仅是在民用灯泡的基础上,把外层玻璃改成了UV transmitting的玻璃。
我现在的问题有两个:
1.对于实验室的photometer,光源经过filter过滤后,我最后只能得到436nm和546nm两
种波长的光源。这两种波长都是高于紫外线的波长,那么是不是说明,我用普通的
merc... 阅读全帖
g*********n
发帖数: 808
21
求DIFFRACplus Nanofit 软件包?
想做 small angle X-Ray scattering数据分析,求DIFFRACplus NANOFIT。
那位若恰有此软件, 请不吝打包发一份给我。
w****[email protected]
谢谢了
E*******r
发帖数: 370
22
Difference in refractive index provides contrast for light scattering.
Contrast is needed for correlation function.
s*****y
发帖数: 37
23
【 以下文字转载自 Macromolecules 讨论区,原文如下 】
发信人: spindly (Rice killer), 信区: Macromolecules
标 题: 谁有dynamic light scattering的资料阿
发信站: Unknown Space - 未名空间 (Tue Mar 22 19:02:21 2005) WWW-POST
introductory的,选了化工的一门课,真上当啊,要做这个题目的project,现在还不知
道怎么回事。明白的大人们指教指教俺,救命啊
c********x
发帖数: 232
24
来自主题: Macromolecules版 - Scattering A in B or B in A
whoever claims they can tell a in b or b in a through diffraction is
bullshiting. Scattering only tells intensity distribution. That means
all the contrast (A-B) and (B-A) will get squared. Therefore you can
never tell whether it is A-B or B-A.
C********g
发帖数: 211
25
需要用到back scattered electron(BSE) modes of SEM来表征SiNW的core-shell
structure, p-core, i- and n- shells. 如果doping量很少, 比如Si:B or Si:P 大
约在1000:1,甚至更少,BSE work or not?
3Q!
h***c
发帖数: 13
26
Ping Sheng, "Introduction to wave scattering, localization, and mesoscopic p
henomena" (Academic New York 1995)
本人急需拜读,有没有朋友有这本书的电子版?如果有的话可否share?
如果可以的话,请发送到:y*******[email protected] 非常感谢!
a****n
发帖数: 3082
27
来自主题: Physics版 - Scattering expert Please help me
I am doing small angle scattering on biomolecules
Someone says I need to run as long time as I can on buffer since the error
bar is larger for buffer than the sample
Somebody else says I need to run longer time on Sample than buffer.
Any idea on that and please explain.
Thanks
a*******r
发帖数: 7558
28
来自主题: Physics版 - diffraction和scattering 有什么区别
衍射是散射的一部分
射到点阵上,如果只考虑单散射,那么就只有衍射,也可以笼统说被散射;
如果点之间的衍射还相互作用,就是多重散射multiple scattering

when
such
straight
through
a*****e
发帖数: 4577
29
来自主题: Physics版 - diffraction和scattering 有什么区别
我觉得挺奇怪的一点就是
点阵如果是阵列,有一定的周期性, 一般就会成为diffraction
如果是随机点阵,就被成为scattering
按照你说的这个各事件独立为散射,事件相互关联为衍射的说法似乎比较套的上
a*******r
发帖数: 7558
30
来自主题: Physics版 - diffraction和scattering 有什么区别
我老推荐两本书:
http://books.google.com/books?id=Q-ycZeZ8AWYC&dq=diffraction+effects+in+semi-
classical+scattering&printsec=frontcover&source=bl&ots=IpYlphws0b&sig=_
a3haUixmlfpdFnZiNi8YxfvNbQ&h
l=en&ei=pOY6S_zVIs6IkAXAsuHPBQ&sa=X&oi=book_result&ct=result&resnum=7&ved=
0CBwQ6AEwBg
http://books.google.com/books?
id=e5dHu9otWz0C&pg=PT1&lpg=PT1&dq=sommerfeld+mathematical+theory+of+
diffraction&source=bl&ots
=ih74mthZ5M&sig=MOCeRkhu-
Wv5_EkaXKG8Q3LCjDI&hl=en&ei=6eY6S_GOCs6TkAXmoIjuCA&sa=X&oi=book_result&ct
d*******n
发帖数: 1566
31
有没有人读过这篇paper,
期末考试是要将这一篇paper,无耐不是我的背景,
应该是比较经典的文章,如果有人熟悉可以帮忙一下感谢万分!
谢谢
(站内信)
http://prb.aps.org/abstract/PRB/v58/i19/p12899_1
Phys. Rev. B 58, 12899–12907 (1998)
Phonon dispersion and Raman scattering in hexagonal GaN and AlN
Abstract
References
Citing Articles (122)
Download: PDF (182 kB) Buy this article Export: BibTeX or EndNote (RIS)
V. Yu. Davydov*, Yu. E. Kitaev, I. N. Goncharuk, and A. N. Smirnov
Ioffe Physical Technical Institute, St. Petersburg 194021, Russia
J. Graul, O. Semchinova,

发帖数: 1
32
把骨灰洒在迪士尼乐园里,乍听浪漫,但细思极恐。《华尔街日报》最近证实,真的有
人这么做,而且这么做的人还不少。为了应对遍布园区的骨灰,迪士尼也有特殊的“法
宝”。你猜这些骨灰最后去哪了?
Disney has something of a cult following, so it shouldn't be much of a
surprise that some people want to stay in the entertainment giant's theme
parks... forever.
迪士尼有狂热的粉丝,所以如果你听说有些人想留在迪士尼主题公园……直到永远,也
不用感到惊讶。
As a report in the Wall Street Journal has just confirmed, some people
really try to do that - by having loved ones scatter their cremains.
《华尔街日报》的一篇报道最近证实,有些人真的这样做了——他们让亲人把自己的骨
灰洒在迪士尼乐园。
At Disn... 阅读全帖
f**d
发帖数: 768
33
来自主题: Neuroscience版 - eBook: From computer to brain
这是一本计算神经科学的优秀著作,全文拷贝这里(图和公式缺),有兴趣的同学可以
阅读
如需要,我可以分享PDF文件(--仅供个人学习,无商业用途)
From Computer to Brain
William W. Lytton
From Computer to Brain
Foundations of Computational Neuroscience
Springer
William W. Lytton, M.D.
Associate Professor, State University of New York, Downstato, Brooklyn, NY
Visiting Associate Professor, University of Wisconsin, Madison
Visiting Associate Professor, Polytechnic University, Brooklyn, NY
Staff Neurologist., Kings County Hospital, Brooklyn, NY
In From Computer to Brain: ... 阅读全帖
d********y
发帖数: 176
34
好像以前也在这里也回答过你的光谱学问题。
透射光 should refer to the forward-traveling laser excitation. so it is not
Rayleigh scattering.
if you only worry about 透射光, then a 90 degree or a back scattering (which
most modern commercial instruments use) doesn't have this problem because
by definition 透射光 doesn't go to the detector.
but if you worry about Rayleigh, regardless what geometry is used (back
scattering, forward scattering, 90
degree), the Rayleigh scattering is usually many many times stronger than
the Raman ... 阅读全帖
s*********g
发帖数: 46
35
在各种论坛上提问了很久,都没有找到合适的答案,在这里碰碰运气吧。
请教各位GGJJ,
我想用zemax的非序列模式仿真玻璃diffuser的透射及反射场。
我用的是thorlabs ground glass diffuser,技术参数如下:http://www.thorlabs.de/newgrouppage9.cfm?objectgroup_id=1132
Material: N-BK7 (Uncoated)
Scratch-Dig: 80-50
Clear Aperture: >90%
DiameterPolished Side Surface Irregularity: <4λ
Gaussian Intensity Profile
120, 220, 600, or 1500 grit
请问是否可以使用zemax的内建散射模型?如果可以,应该使用哪一种?谢谢!!
Built-in scattering models
Lambertian
BSDF = 1/p
The scattered ray projection vector has equal probabilit... 阅读全帖
m****s
发帖数: 18160
36
来自主题: TrustInJesus版 - [合集] 查经贴-使徒行传
☆─────────────────────────────────────☆
Dramaer (不要问我从那里来) 于 (Fri Oct 22 12:02:52 2010, 美东) 提到:
Act 1:1-11 Jesus Taken Up Into Heaven
1In my former book, Theophilus, I wrote about all that Jesus began to do and
to teach 2until the day he was taken up to heaven, after giving
instructions through the Holy Spirit to the apostles he had chosen. 3After
his suffering, he showed himself to these men and gave many convincing
proofs that he was alive. He appeared to them over a period of forty days
... 阅读全帖
l**********1
发帖数: 5204
37
庄只是徐福炼丹 给秦始皇炼那个长生不老丹吧?
Xiaoliang Sunney Xie
Raman Scattering is King Route to 单分子Raman scattering 光 (possible)
1)
Single DNA molecule detection in an optical trap using surface-enhanced Raman scattering
//apl.aip.org/resource/1/applab/v96/i21/p213701_s1
Abstract:
Raman spectra from single DNA molecules in their natural aqueous environment are presented. A DNA molecule that is anchored between two optically trapped dielectric beads is suspended in a solution with nanosized silver colloid particl... 阅读全帖
b***y
发帖数: 14281
38
来自主题: Military版 - 方励之的学术成就全记录
既然有人争论方的学术水平,就上网搜了一下。应该说这个水平对于一个junior
faculty来说可以算是很牛B了,但是对于老方这种senior的已经搞了一辈子的人来说,
就只能算so so。不要说是院士,离aps fellow的级别也还差了不少。引用率最高的一
篇文章还是95年到了arizona之后跟老外合作的,被引118次,这也是方唯一一篇被引用
上百次的文章。可见方励之89之前确实没有做出过什么重要的工作,他的名声和地位绝
对是靠政治得来的,当然其中部分的也是80年在中国搞科普所得,必须承认科普工作也是
有重要的社会意义的。
(BTW,有人说你这个搜索未必完整。不错,确实不能保证100%毫无遗漏。但是我
用的search engine is THE search engine everybody in this community uses today.
So, if any article is not found by this search engine, sadly, it simply doesn't matter,
because no one would ever n... 阅读全帖
g*********r
发帖数: 1443
39
来自主题: Fishing版 - 水深与颜色
今天学了点新知识,和大家分享:
Reflection, Refraction, and Color
The uppermost, sunlit layer of the ocean where 70 percent of the entire
amount of photosynthesis in the world takes place is called the euphotic
zone. It generally extends to a depth of 100 meters (330 feet). Below this
is the disphotic zone, between 100 and 1,000 meters (330 and 3,300 feet)
deep, which is dimly lit. Some animals are able to survive here, but no
plants. Although the amount of light is measurable at this range of depths,
there is ... 阅读全帖
E**********l
发帖数: 264
40
来自主题: TrustInJesus版 - 地球的年龄有多大?
各位,我不参与信仰讨论,不过这篇讨论地球年龄上了首页,进来看一下。
请问给出的“三位”中第一位的博士论文能否给个详细说明的链接,我查阅此人只能找到
https://aas.org/obituaries/john-allen-eddy-1931-2009
http://en.wikipedia.org/wiki/John_A._Eddy#Childhood_and_educati
说的都是同一个人,但是此人的研究似乎不是地球年龄,他的博士论文内容简介如下,
也与这个无关:
Eddy completed his PhD Thesis at the University of Colorado at Boulder in
December 1961 titled "The Stratospheric Solar Aureole".[6]
Abstract: The theory of light scattering by small particles is summarized to
develop the formulae needed to interpret solar aureo... 阅读全帖
k******6
发帖数: 7
41
Purpose
The Center for Nanophase Materials Sciences (CNMS) at Oak Ridge National
Laboratory (ORNL) is seeking a Postdoctoral Research Associate with
experience and expertise in organic spintronics, with a strong emphasis on
the design, fabrication and characterization of organic spintronic device.
The CNMS http://cnms.ornl.qov/ is a nanoscience research facility supported by the Office of Science, U.S. Department of Energy (DOE). The CNMS has a diverse spectrum of nanoscience activities includ... 阅读全帖
o********e
发帖数: 34
42
来自主题: Macromolecules版 - SAXS profile calculation
I agree.
Nod nod. That is why it is so difficult to get accurate shape information of
clusters in solid. Structure factor is always the killing factor.
I think the incoherent scattering is not a big issue. He can always treat it
as a fitting parameter since incoherent scattering is always the same at
different scattering wavevector.
Are you a scattering guy?
k******6
发帖数: 7
43
Purpose
The Center for Nanophase Materials Sciences (CNMS) at Oak Ridge National
Laboratory (ORNL) is seeking a Postdoctoral Research Associate with
experience and expertise in organic spintronics, with a strong emphasis on
the design, fabrication and characterization of organic spintronic device.
The CNMS http://cnms.ornl.qov/ is a nanoscience research facility supported by the Office of Science, U.S. Department of Energy (DOE). The CNMS has a diverse spectrum of nanoscience activities includ... 阅读全帖
k******6
发帖数: 7
44
Purpose
The Center for Nanophase Materials Sciences (CNMS) at Oak Ridge National
Laboratory (ORNL) is seeking a Postdoctoral Research Associate with
experience and expertise in organic spintronics, with a strong emphasis on
the design, fabrication and characterization of organic spintronic device.
The CNMS http://cnms.ornl.qov/ is a nanoscience research facility supported by the Office of Science, U.S. Department of Energy (DOE). The CNMS has a diverse spectrum of nanoscience activities includ... 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
h*****h
发帖数: 264
46
http://www.pku.edu.cn/ 头条
http://pkunews.pku.edu.cn/xwzh/2018-07/02/content_303545.htm
2018年7月1日起,北大生物动态光学成像中心主任、北京未来基因诊断高精尖创新中心
主任——谢晓亮正式全职回到母校北大任教,担任北京大学李兆基讲席教授。
谢晓亮
1998年,谢晓亮成为改革开放后哈佛大学聘任的第一位来自中国大陆的终身教授;2009
年,他成为改革开放后第一位哈佛冠名讲席教授的中国大陆学者;他是美国国家科学院
院士、美国国家医学院院士、美国艺术与科学院院士、美国物理化学和生物物理界最高
奖获得者,是获得美国生命医学大奖——阿尔伯尼生物医学奖的第一位华人。
附:谢晓亮教授为北大120周年校庆撰写的纪念文章:
梦想的启航与归程——我和北大的故事
光阴似箭,岁月如梭,历经百廿沧桑,母校北京大学今年迎来120周年华诞。
我生于北大,长于北大,熟悉这里的一草一木,一山一水。从北大幼儿园、北大附小、
北大附中到北京大学,我在北大度过了大部分的学生时光,与北大一起经历了中国的历
史变迁,建立了无法割舍的联系。每次回... 阅读全帖
w********2
发帖数: 632
47
来自主题: Military版 - 我来说两句谢晓亮
我的意思是raman和ir都是分子振动这一级别的,nmr是原子核自转一级别的,别歪曲。
Comparison of Raman and IR Spectroscopy
By
Dr. Mehboob Peeran
Reviewed By
Dr. K.G. Srinivasamurthy
Mutual exclusion principle
In a molecule with a center of symmetry it is seen that vibrations that are
Raman active are IR inactive and vice-versa, this is called the Principle of
mutual exclusion (eg, as in CO2 see details in the end). In molecules with
different elements of symmetry, certain bands may be active in IR, Raman,
both or neither. For a compl... 阅读全帖
l***d
发帖数: 1798
48
来自主题: Faculty版 - 北大职称内幕(转摘)
这个龚 算是老学霸了
查了一下肖, 龚co-corresponding author的文章
净挑好文章,当co-corresponding authors
2010年龚有三篇只是署名,
估计肖被警告了
以后基本都是co-correspond authors
国内这种欺负 青椒 太tnnd恶心了
2013
Yong-Chun Liu, Yun-Feng Xiao*, You-Ling Chen, Xiao-Chong Yu, and Qihuang Gon
g*, "Parametric Down-Conversion and Polariton Pair Generation in Optomechani
cal Systems," Phys. Rev. Lett. 111(8), 083601 (2013).
Linbo Shao, Xue-Feng Jiang, Xiao-Chong Yu, Bei-Bei Li, William R. Clements,
Frank Vollmer, Wei Wang, Yun-Feng Xiao*, and Qihuang Gong*, "De... 阅读全帖
e********t
发帖数: 9607
49
来自主题: Living版 - 给同学们看看本周天气预报
Tonight
May 23 Strong Storms / Wind 64° 80 %
Tue
May 24 Scattered T-Storms 73°/60° 60 %
Wed
May 25 PM T-Storms 80°/66° 50 %
Thu
May 26 Strong Storms 73°/56° 70 %
Fri
May 27 T-Showers 65°/55° 50 %
Sat
May 28 Scattered T-Storms 76°/62° 40 %
Sun
May 29 Scattered T-Storms 82°/63° 40 %
a**i
发帖数: 2
50
The Neutron Scattering Science Division at Oak Ridge National Laboratory
seeks to fill a postdoctoral research associate position in neutron
scattering studies of soft-condensed matter systems. A PhD or equivalent
degree in physics, materials science, chemistry or related field is required
. The successful candidate is expected to have a background and experience
in soft matter studies and proficiency with applications of scattering
methods to structural/dynamical characterization.
The candidate
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