topics

全部话题 - 话题: absorption
1 2 3 4 5 末页 (共10页)
a***a
发帖数: 40617
1
来自主题: loseweight版 - high protein diet and calcium absorption
刚看到一贴,刚登陆上来回复,帖子被删了,快速回复一下
Heaney, R.P., "Dietary Protein and Phosphorous Do not Affect Calcium
Absorption," The American Journal of Clinical Nutrition, 72(3), 2000,pages
758-761.
Summary:
The purpose of this study was to evaluate whether variation in phosphorus
and protein intakes is associated with variation in calcium absorption.
Over a 20-year period, 191 Roman Catholic nuns (with an average age 49 years
) were studied approximately three times. At each check-up, calcium and
phosphorus level... 阅读全帖
d*****s
发帖数: 313
2
来自主题: Macromolecules版 - what determines the absorption wavelength of liqu
I know something about atomic absorption, not knowing much about
molecular absorption. But my naive thoughts tell me that every
absorption comes with radiation and satuation. Therefore, at a
stage, all absorpted photons will be radiated out, which leads
to white color whatsoever. I just do not know.
d*****s
发帖数: 313
3
来自主题: Macromolecules版 - what determines the absorption wavelength of liqu
I do not know.
What I am thinking now is, since in liquid, the distribution of molecules
is random, therefore, the "packing" of molecules should not be a factor.
Therefore, this leads to the assumption that the absorption wavelength of
liquids comes individual molecules.
However, what lets the individual molecule have color preference? Why
the absorption wavelength of metals is not governed by this molecular
absorption preference?
i*o
发帖数: 202
4
【 以下文字转载自 Physics 讨论区 】
发信人: ito (恩恩), 信区: Physics
标 题: 请教 2photon absorption and emission wavelengths
发信站: BBS 未名空间站 (Thu Aug 26 13:39:40 2010, 美东)
请教一下有没有人有以下各种dye 的2photon absorption and emission spectra 的资料
PE
PE Texas Red
PE cy7
PerCp-Cy5.5
APC
APC-cy7
Alexa Fluo 430
任何信息都可以 谢谢!!
i*o
发帖数: 202
5
【 以下文字转载自 Physics 讨论区 】
发信人: ito (恩恩), 信区: Physics
标 题: 请教 2photon absorption and emission wavelengths
发信站: BBS 未名空间站 (Thu Aug 26 13:39:40 2010, 美东)
请教一下有没有人有以下各种dye 的2photon absorption and emission spectra 的资料
PE
PE Texas Red
PE cy7
PerCp-Cy5.5
APC
APC-cy7
Alexa Fluo 430
任何信息都可以 谢谢!!
l*****n
发帖数: 1679
6
how to measure absorption & photoluminescence for solar cell???
请问用什么仪器能测量,FILM SAMPLE的absorption & photoluminescence啊?
谢谢
w******r
发帖数: 43
7
来自主题: Macromolecules版 - what determines the absorption wavelength of liqu
The crytal color comes from the impurities in the crystalline. If there is no
moleculer absorbtion, the crystal should be colorless.
The color of metal comes from its energy band structure, that means the band
gap determine its color.
The color of liquid shold be determined by the molecule structure, by its
molecule absorption. The mechanism is just like UV absorption.
g***y
发帖数: 4784
8
大家觉得DNA-CNT有意义吗?我一直认为是炒作概念
Optical Absorption of DNA-Carbon Nanotube Structures
Mary E. Hughes, Eric Brandin, and Jene A. Golovchenko*
School of Engineering and Applied Sciences, Harvard University, Cambridge,
Massachusetts 02138, Department of Molecular and Cellular Biology, Harvard
University, Cambridge, Massachusetts 02138, and Department of Physics,
Harvard University, Cambridge, Massachusetts 02138
Abstract:
We measured the UV optical absorption of single-stranded DNA bound to single
-walle
y***e
发帖数: 6082
9
this is a hot one, hehe

大家觉得DNA-CNT有意义吗?我一直认为是炒作概念
Optical Absorption of DNA-Carbon Nanotube Structures
Mary E. Hughes, Eric Brandin, and Jene A. Golovchenko*
School of Engineering and Applied Sciences, Harvard University, Cambridge,
Massachusetts 02138, Department of Molecular and Cellular Biology, Harvard
University, Cambridge, Massachusetts 02138, and Department of Physics,
Harvard University, Cambridge, Massachusetts 02138
Abstract:
We measured the UV optical absorption of single-stranded D
l*****n
发帖数: 1679
10
how to measure absorption & photoluminescence for solar cell???
请问用什么仪器能测量,FILM SAMPLE的absorption & photoluminescence啊?
谢谢
l*****n
发帖数: 1679
11
how to measure absorption & photoluminescence for solar cell???
请问用什么仪器能测量,FILM SAMPLE的absorption & photoluminescence啊?
谢谢
n***e
发帖数: 11
12
来自主题: Environmental版 - light absorption 或 remote sensing 审稿机会
light absorption 的研究想发表在continental and shelf research或类似的期刊,
感兴趣想做审稿人的,请站内联系。谢谢。
n***e
发帖数: 11
13
来自主题: Environmental版 - light absorption 或 remote sensing 审稿机会
主要分析了海水中三种吸收光的成份: phytoplankton, CDOM, 和 non-algal
particles. 对三种成份进行了比较详细的分析和讨论,以及得出一些可用于remote
sensing modeling的参数.
发表过light absorption 研究的,或者是应用bio-optical characteristics从remote
sensing data推算水质的同学都适合做审稿人.
n***e
发帖数: 11
14
light absorption 的研究想发表在continental and shelf research或类似的期刊,
感兴趣想做审稿人的,请站内联系。谢谢。
d*****s
发帖数: 313
15
来自主题: Macromolecules版 - what determines the absorption wavelength of liqu
of liquid.
I understand why crystals can show different colors, the optical bands
play the critical role there. But to liquids, I have no idea at all.
What determines the absorption wavelength? molecule size? or whatever?
Thanks.
x*o
发帖数: 1037
16
来自主题: Macromolecules版 - what determines the absorption wavelength of liqu
Band gap between different orbitals?
Like UV: n-->Pai* et al...
Visible absorption is the same?
t***s
发帖数: 163
17
you can measure film sample reflection.
There are many commercial available instruments to measure absorption and
photoluminescence of film sample.
i*o
发帖数: 202
18
请教一下有没有人有以下各种dye 的2photon absorption and emission spectra 的资料
PE
PE Texas Red
PE cy7
PerCp-Cy5.5
APC
APC-cy7
Alexa Fluo 430
任何信息都可以 谢谢!!
c**e
发帖数: 236
19
来自主题: Physics版 - 请教: Low Temperature Absorption
Low Temperature Absorption是用来研究材料什么物理性质的呢?
谢谢
c**e
发帖数: 236
20
来自主题: Physics版 - 请教: Low Temperature Absorption
深奥。。。谢谢
对于材料的光学性质呢?
比如exciton
absorption spectrum会随温度有怎样的变化呢

gives
c**m
发帖数: 1632
21
来自主题: Physics版 - 请教: Low Temperature Absorption
You have to state your scenario clearly, not like this, hide your research
interest......
Exciton absorption is another old topic. Schmitt-Rink has developped a Green
function model for semiconductor lasers and usable. Exciton itself is
already a wide topic, and that really depends on your research interest and
scenario.
m******y
发帖数: 2207
22
My understanding:
Absorption is directly related to the band gap (for oxides or semiconductors
), photons with energy less than the band gap won't be absorbed and thus
transmits through the material.
My question:
Sapphire single crystal substrate being heated to 100C. I don't see any
emissions using an IR camera with a detection range of 0.248 eV to 1.24 eV.
Why it doesn't emits lights within that range?
Thank you.
a*******r
发帖数: 7558
23
有没有相关文献 讲sapphire ir emission之类的?

My understanding:
Absorption is directly related to the band gap (for oxides or semiconductors
), photons with energy less than the band gap won't be absorbed and thus
transmits through the material.
My question:
Sapphire single crystal substrate being heated to 100C. I don't see any
emissions using an IR camera with a detection range of 0.248 eV to 1.24 eV.
Why it doesn't emits lights within that range?
Thank you.
b***y
发帖数: 14281
24
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
p*********l
发帖数: 26270
25
补铁主要还是靠吃红肉或者肝,谷物和绿叶菜里面的铁吸收很差的。另外,不用担心吃
铁吃多了,人体自己会知道该吸收多少。
What affects iron absorption?
Iron absorption refers to the amount of dietary iron that the body obtains
and uses from food. Healthy adults absorb about 10% to 15% of dietary iron,
but individual absorption is influenced by several factors [1,3,8,11-15].
Storage levels of iron have the greatest influence on iron absorption. Iron
absorption increases when body stores are low. When iron stores are high,
absorption decreases to help protect ... 阅读全帖
h******i
发帖数: 661
26
你们学校ap能发这么多paper?
1989
Cosmological implications of quasar-galaxy associations, L.Z.Fang, Y.Q.Chu
and X.F. Zhu, Mod. Phys. Lett., 4, 887.
Geometrical optics in an inhomogeneous universe, L.Z.Fang and X.P.Wu,
Chinese Phys. Lett., 6, 233.
Quasar clustering and its cosmological implication, L.Z.Fang, Inter. J. Mod.
Phys. A4, 3477.
L'Osservatorio astronomico di Pechino: la sua storia, il presente, L.Z.Fang,
Scienza e Tecnica, Annuario della EST 88/89 404.
Overview on the frontier of high energy astr... 阅读全帖
S******8
发帖数: 24594
27
老方到美国后发的文章列表,你自己看吧:
1990
174. Biased clustering in a universe with hot dark matter and a cosmic
string, L.Z.Fang, S.P.Xiang and L.Yan, Astr. & Astrophys. 233, 1.
175. Periodicity of redshift distribution in a T-3 universe, L.Z.Fang, Astr.
& Astrophys. 239, 24.
176. An upper limit to quasar's peculiar velocity, L.Z.Fang, Y.Q.Chu, X.F.
Zhu and L.F. Wang, Inter. J. Mod. Phys., 5, 2993.
177. Quasar pair and quasar's peculiar velocity, L.Z.Fang, Developments in
general relativity, astrophysics and qu... 阅读全帖
z********0
发帖数: 9013
28
来自主题: Fitness版 - SkyDrive For Fitness
VOLUME 1: JERKS
Introduction
How to Use This DVD Series
How NOT to Use This DVD Series
Phases of Jerk Lift, an overview
[Phase 1]: Introduction to 'Rack' Position
[Phase 1]: Key Points of Rack Position
[Phase 1]: Limiting Factors and Variations of Rack position
[Phase 1]: Practicing Rack Position: Active Rack 'Meditation'
[Phase 1]: Practicing Rack Position: Rack 'Meditation'
[Phase 2]: Overview: primary movers, trajectory
[Phase 2]: Proper Hand Positi... 阅读全帖
z********0
发帖数: 9013
29
来自主题: Fitness版 - SkyDrive For Fitness
VOLUME 1: JERKS
Introduction
How to Use This DVD Series
How NOT to Use This DVD Series
Phases of Jerk Lift, an overview
[Phase 1]: Introduction to 'Rack' Position
[Phase 1]: Key Points of Rack Position
[Phase 1]: Limiting Factors and Variations of Rack position
[Phase 1]: Practicing Rack Position: Active Rack 'Meditation'
[Phase 1]: Practicing Rack Position: Rack 'Meditation'
[Phase 2]: Overview: primary movers, trajectory
[Phase 2]: Proper Hand Positi... 阅读全帖
b***y
发帖数: 14281
30
来自主题: Military版 - 方励之的学术成就全记录
No. The search include his early works up to 1978. Here is the same list
sorted by year.
1) The Influence of Gravitation on the Vacuum State.
By Li-Zhi Fang.
Acta Phys. Sinica 27 ( 1978) 181-18.
2) THE STRUCTURE AND STABILITY OF THE ABNORMAL NEUTRON STAR.
By Li-Zhi Fang, Qin-Yue Qu, Zhen-Ru Wang, Tan Lu, Liao-Fu Luo.
Sci.Sin.22:187-198,1979.
3) Some Recent Developments in Astrophysics. (Talk).
By Li-Zhi Fang, A. Qadir, R. Ruffini.
In *Nathiagali 1980, Proceedings, Physics and Contemporary Needs... 阅读全帖
b****i
发帖数: 11322
31
来自主题: loseweight版 - 糖就是毒药 (转载)
let me bring out wiki, yet, again:
fructose absorption:
The mechanism of fructose absorption in the small intestine is not
completely understood. Some evidence suggests active transport, because
fructose uptake has been shown to occur against a concentration gradient.[23
] However, the majority of research supports the claim that fructose
absorption occurs on the mucosal membrane via facilitated transport
involving GLUT5 transport proteins. Since the concentration of fructose is
higher in the lu... 阅读全帖
w*********g
发帖数: 30882
32
平井宪夫揭示日本核电业惊天内幕——素人造核电,豆腐渣工程
作者:蜀中行 更新时间:2011-3-16
设施配管1级技士平井宪夫(1997年1月因癌症逝世)生前的最后吶喊。
/来自中华网社区 club.china.com/
/来自中华网社区 club.china.com/
关于平井宪夫:
1997年1月逝世。设施配管1级技士,核电事故调查国民会议顾问,核电劳工救济中
心代表,北陆电力志贺核电厂停止诉讼原告特别辅佐人,东北电力女川核电停止诉讼原
告特别辅佐人,福岛二号核电厂三号机运转停止诉讼原告证人。「核电劳工救济中心代
表」在他仙逝后,因后继无人关闭
"我不是反核运动家。这20年来,我一直在核电厂工作。社会上有听不完的拥核反
核理论,但我只想在这里告诉大家:「所谓的核电厂是这样一回事。」大部份的人都不
知道核电内部的实际情形。希望大家有耐心把这篇文章读完。所谓核电,跟各位所想的
或许有点出入。在那里,每天都有遭受放射线污染的工人,以及严重的岐视产生。
我的专长,是负责大型化学工场的内部配管施工与维修。快30岁时,日本掀起了一
阵核电建设的... 阅读全帖
s******a
发帖数: 317
33
来自主题: Ski版 - portes du soleil归来加点心得
我们可以从whaw今天那贴讨论里面偷学不少东西出来。
“要永远保持身体重心压在雪板头上,身体不要有起伏,转弯的时候
上身不能转,而是扭膝盖。。。”
如何不后坐,保持身体重心压在雪板头上?一个可能有用的方法就是尽量用小腿前部压
雪鞋的前舌,只有身体重心在前的时候你才能感觉到小腿压雪鞋的sensation。如何让
重心向前,他们讨论得很清楚了,利用点杖(点杖在中大turn中是用来initiate turn)
而在mogul 中是用来弥补吸收(absorption)过程中身体有可能落在后面。 至于whaw说
的不要点杖,他也解释得很清楚,不用点杖来initiate turn.
“absorption & extension(AE)是滑蘑菇控制速度
的两大法宝之一,另外一个是edging。"
absorption 很关键,好的absorption 为好的extension 提供基层,为什么“身体重心
压在雪板头上"? , 因为这样在extension 阶段雪橇才能全面接触雪面, 起到减速作
用。 很多人把absorption 比作骑自行车时的后踏动作,车链空转的时候? 这个时候
你的膝盖弯曲并
s******a
发帖数: 317
34
来自主题: Ski版 - portes du soleil归来加点心得

我们可以从whaw今天那贴讨论里面偷学不少东西出来。
“要永远保持身体重心压在雪板头上,身体不要有起伏,转弯的时候
上身不能转,而是扭膝盖。。。”
如何不后坐,保持身体重心压在雪板头上?一个可能有用的方法就是尽量用小腿前部压
雪鞋的前舌,只有身体重心在前的时候你才能感觉到小腿压雪鞋的sensation。如何让
重心向前,他们讨论得很清楚了,利用点杖(点杖在中大turn中是用来initiate turn)
而在mogul 中是用来弥补吸收(absorption)过程中身体有可能落在后面。 至于whaw说
的不要点杖,他也解释得很清楚,不用点杖来initiate turn.
“absorption & extension(AE)是滑蘑菇控制速度
的两大法宝之一,另外一个是edging。"
absorption 很关键,好的absorption 为好的extension 提供基层,为什么“身体重心
压在雪板头上"? , 因为这样在extension 阶段雪橇才能全面接触雪面, 起到减速作
用。 很多人把absorption 比作骑自行车时的后踏动作,车链空转的时候? 这个时候
你的膝盖弯曲
G**********e
发帖数: 11693
35
几乎零卡路里,低GI,粗纤维,抑制食欲,天然的肠胃清道夫,清肠解毒,降血脂血糖
,绝对的好东西
Amorphophallus konjac is a large, perennial exotic Asian plant. It grows a
single, elongated center called a corm and a single large leaf that wraps
around it. The corm is the part of the plant that is used, as well as its
tuber, which is commonly called the konnyaku potato. Glucomannan is its
scientific name, and its other common names include konjac mannan, devil's
tongue, konjac, elephant-foot yam, snake plant and konnyaku.
Significance
Amorphop... 阅读全帖
d****y
发帖数: 2180
36
UW 题目里面列了肌注和皮下注射,然后选了肌注,说是肌注起效快。我觉得这题目真
是坑爹啊。( 另外还有一个怀疑Cushing syndrome到底是先做Dexamethasone
overnight suppression test 还是先测24小时cortisol的也是很让人抓狂。传统的是
先做Dexamethasone overnight suppression test, 然后Mayo Clinic 是推崇先测24
小时cortisol的。考试如果碰到这两个同时出现的,到底选哪个? 肯定要晕了。 )
另外我从Medscape 找到的:
The pros and cons of epinephrine administration through various routes are
summarized in Table 2.[1,8•,12–18,19•,20•] Intramuscular
injection into the mid-anterolateral aspect of the thigh is recommended as
t... 阅读全帖
C****o
发帖数: 1549
37
Kai Sun, Shengkai Wang, Ritobrata Sur, Xing Chao, Jay B. Jeffries, Ronald K.
Hanson, "Time-resolved in situ detection of CO in a shock tube using cavity
-enhanced absorption spectroscopy with a quantum-cascade laser near 4.6μm,"
Optics Express (2014), 22(20), 24559-24565.
Kai Sun, Shengkai Wang, Ritobrata Sur, Xing Chao, Jay B. Jeffries, Ronald K.
Hanson, "Sensitive and rapid laser diagnostic for shock tube kinetics
studies using cavity-enhanced absorption spectroscopy," Optics Express (2014
), ... 阅读全帖
D*****0
发帖数: 35
38
来自主题: NextGeneration版 - 孕妇维生素/钙片/牛奶一起吃没问题吧

刚好我最近也做了一些research,铁片要空腹吃,和钙片,牛奶一起会妨碍吸收,最好
橙汁(维他命C)送服。
http://en.wikipedia.org/wiki/Iron_supplements
“Iron forms an insoluble complex with several other drugs, resulting in
decreased absorption of both iron and the other drug. Examples include
tetracycline, penicillamine, methyldopa, levodopa, bisphosphonates and
quinolones.
The same can occur with elements in food, such as calcium. Absorption of
iron is better at a low pH (an acid environment), and resorption is
decreased if there is a simul... 阅读全帖
w****a
发帖数: 2049
39
来自主题: NextGeneration版 - 可以拒绝做 high-risk ultrasound 吗?
high risk ultrasound is just ultrasound for high risk mom. ultrasound is
quite safe.
Ultraschall Med. 2012 Jun;33(3):215-7. doi: 10.1055/s-0032-1312759. Epub
2012 Jun 14.
[Obstetrical ultrasound: can the fetus hear the wave and feel the heat?].
[Article in German]
Abramowicz JS, Kremkau FW, Merz E.
Abstract
"Fetuses can hear ultrasound and the sound is as loud as a subway train
entering a station." This statement originates in a single report in a non-
peer reviewed journal, despite its name 1, ... 阅读全帖
n**e
发帖数: 2026
40
来自主题: WaterWorld版 - 朱令案眼科问题再答质疑
“月亮湾”网友对尼罗河提出的眼药投毒不可行论提出了质疑。这篇文章就此展开讨论。
1:眼药水能到达视网膜吗? 回答是肯定的。
这是一家视网膜专科研究所的网站:http://retinaspecialty.com/about-us/research/product-development/。这这里你可以看到药物送达视网膜的4种方式:直接注射,滴眼药水,全身给药和在眼睛周围埋至药物。至于是通过血循环还是非血液循环,我们不讨论。我认为两种都有。
2:滴眼药水有多少能到达视网膜? 没有具体数椐。因为你文中列出的原因和机制,能
到达视网膜只有很少的一部分。这也是很多治疗视网膜疾病的药物不得不选择直接注射
的方式。

“月亮湾”与尼罗河的关键分歧点在眼药水能否直达视网膜的问题上。就在这个网站首
页上,可以看到有四种方法可以向视网膜给药:
•Direct Injection
•Eye Drops
•Systemic Medicine
•placement of Medicine Around the eyes
滴眼液被列为方法之一。但是,网站没有说... 阅读全帖
x****h
发帖数: 300
41
来自主题: Chemistry版 - Paper Help, Thanks
都是中文文献:
1. SPECTROSCOPY AND SPECTRAL ANALYSIS , volume 25, issue 5 2005 P 792-795
authors:Kang WJ, Liang SX, Jia LH, et al.
title: Determination of trace cadmium in environment water samples by
flame atomic absorption spectrometry using flow injection on-line
preconcentration with double microcolumns
2. SPECTROSCOPY AND SPECTRAL ANALYSIS, volume 26, issue 7, 2006 P 1345-1348
authors: Wang AX, Guo LP, Wu DM
title: Determination of Pb and Cd in environmental water sample by on-
line... 阅读全帖

发帖数: 1
42
来自主题: Military版 - zt 百年宇宙线研究的中国故事
从乌蒙山到念青唐古拉——百年宇宙线研究的中国故事
2016-08-01 中科院物理所
宇宙射线是来自宇宙深处的高能粒子流(少数来自太阳爆发事件),其中能量最高者可达
到现今最大人工加速器所产生粒子能量的百万倍.伴随着宇宙透明、天体演化,它一直
充斥在宇宙空间;数十亿年来,它还突破太阳和地球磁场的封锁而时刻普照着地球,而
在后来出现的地球生物却对此一直习以为常、浑然不觉.直到一百年前,人们在大量热
气球高空观测中才发现了它的存在(Victor Franz Hess 于1912).自此,人类得知了这
种自动送上门来的宇宙的物质样品和信息使者,也找到了当时唯一能轰开原子核的“粒
子炮弹”,从而可以去打开微观世界神秘的大门,促成了粒子物理学的诞生和人工加速
器的发展;并在今天人类活动范围日益扩大的背景下,将它与地球的空间环境密切关联
了起来.在庆祝宇宙射线这个身兼宇观、微观和环境三重属性的宇宙的使者被人类发现
100 周年之际,全世界的相关学者都在盘点前辈们艰苦卓绝的探索历程和丰硕成果,此
时此刻,国人一定想知道,在人类百年宇宙线研究中,我们中国人做过些什么,占有何
等的位置.正如大家知道的,... 阅读全帖
C****o
发帖数: 1549
43
来自主题: Military版 - 超星念书念了12年 脑子瓦特了
其实就4篇, 杂志都不咋地
Kai Sun, Shengkai Wang, Ritobrata Sur, Xing Chao, Jay B. Jeffries, Ronald K.
Hanson, "Time-resolved in situ detection of CO in a shock tube using cavity
-enhanced absorption spectroscopy with a quantum-cascade laser near 4.6μm,"
Optics Express (2014), 22(20), 24559-24565.
Kai Sun, Shengkai Wang, Ritobrata Sur, Xing Chao, Jay B. Jeffries, Ronald K.
Hanson, "Sensitive and rapid laser diagnostic for shock tube kinetics
studies using cavity-enhanced absorption spectroscopy," Optics Exp... 阅读全帖
w********2
发帖数: 632
44
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
C**R
发帖数: 1047
45
来自主题: Military2版 - 很传奇的关于J20的评论。。。
铁和铁的氧化物的都有
Fabrication, Characterization and Microwave Properties of Polyurethane
Nnaocomposites Reinforced with Iron Oxide and Barium Titanate Nanoparticles
Z. Guo*; S. E. Lee; H. Kim; S. Park; H. T. Hahn; A. B. Karki; D. P. Young
Acta Materialia, 57, 267-277 (2009). [pdf linkage]
Microwave Absorptive Polyurethane Nanocomposites with Insulating Silica-Iron
Nanoparticles
R. Patil, J. Zhu, S. Wei, A. Karki, D. Young and Z. Guo
Materials Science & Technology 2010 - Structural Materials for Ae... 阅读全帖
U*****g
发帖数: 366
46
My area: semiconductor device and physics / electrical engineering
CV:
QIUGUI ZHOU
Email: q**[email protected]
Phone: 1+(434) 243-2147
===========================================================================
EDUCATION
UNIVERSITY OF VIRGINIA
Charlottesville, VA
Ph.D. in Electrical Engineering
2011
UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA(中国科学技术大学)
Hefei, CHINA
Master of Science in Optics ... 阅读全帖
m**n
发帖数: 156
f******o
发帖数: 484
48
来自主题: NextGeneration版 - 有吃过GNC姐妹吗
想买维生素怀孕前三个月吃,在GNC网上看有三种哪种好?非常感谢!
GNC Women's Prenatal Program, 30-Day Program 一天四片
http://www.gnc.com/product/index.jsp?productId=3359445
1,000 mcg of folic acid to support healthy fetal development
200 mg of DHA vital for baby’s brain and eye development
1,200 mg of bone-strengthening calcium
400 IU of vitamin D-3 to enhance calcium absorption
Prenatal Formula – 60 Caplets, Calcium 600 – 30 Caplets, DHA 200 – 30
Softgels
GNC Women's Prenatal Formula with Iron, Caplets 这种还分含with ... 阅读全帖
q*d
发帖数: 22178
49
☆─────────────────────────────────────☆
swjtuer (swjtuer) 于 (Tue Mar 30 23:56:30 2010, 美东) 提到:
星期一
早餐 牛奶,煮鸡蛋,玉米馒头,榨菜
早点 芦柑
午餐 中大:绿豆饭,木须肉,海米冬瓜,棒骨菠菜汤
小婴:绿豆饭,三叶瓜炒肉,海米冬瓜,棒骨菠菜汤
午点 冰糖山楂水,蔬菜饼
晚餐 棒骨冬苋菜瘦肉粥,卤肉秋叶夹馍

星期二
早餐 牛奶,蒸鸡蛋,枣泥糕
早点 香蕉
午餐 中大:胡萝卜饭,芹菜炒牛肉,珊瑚豆腐,棒骨凤尾汤
小婴:胡萝卜饭,芹菜炒肉,珊瑚豆腐,棒骨凤尾汤
午点 果汁,卤猪肝
晚餐 豌豆肉末焖饭,番茄虾皮紫菜汤
星期三
早餐 南瓜粥,卤蛋,如意肉卷
早点 脐橙
午餐 中大:金银饭,咸烧白,海米儿菜,棒骨冬苋菜汤
小婴:金银饭,樱桃肉,海米儿菜,棒骨冬苋菜汤
午点 牛奶,蛋卷
晚餐 米饭,蒜苔炒肉,芙蓉蒸蛋,棒骨海带萝卜汤
星期四
早餐 牛奶,蒸鸡蛋,奶香馒头
早点 苹果
午餐 中大:南瓜饭,什锦鱼丸,韭菜炒豆干,番茄菌类鱼汤
... 阅读全帖
m**n
发帖数: 156
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