d********O 发帖数: 1196 | 1 Title: Ultraviolet spectra and structure of zinc-cellulose complexes in zinc
chloride solution
Journal: Journal of Applied Polymer Science
Year: 1999 Vol: 71 page:1441-1446
Thank you again! |
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h*******o 发帖数: 1114 | 3 非常感谢!就是说我有40多个Raman谱图(是从零时间到全部生成产物的终点),是水
解反应A+H2O---〉B+C+D——〉C+D,B是intermediate,最后全部生成C(完全水解产物
),没有calibration spectra,在这种情况下,用PCA建Model还需要做cross
validation吗?如何分析data以求得rate constant(假定反应为first order)? |
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h*******o 发帖数: 1114 | 4 请麻烦推荐一个适合MCR(multivariate curve resolution) model 的preprcocessing
method for Raman spectra data.
I used baseline(weighed least squares) and Normalization. Any other comments?
非常感谢!大包子献上! |
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a***i 发帖数: 109 | 5 Quantum-chemical calculations of the IR absorption spectra of modified
polytetrafluoroethylene forms.
Russian Journal of Physical Chemistry (2006), 80, (12), 1940-1948. Publisher
Thanks |
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p******e 发帖数: 247 | 6 Ab initio study of phenyl benzoate: structure, conformational analysis,
dipole moment, IR and Raman vibrational spectra.
Journal of molecular modeling (2003), 9, (4), 248-58.
Please send to x**********[email protected]
Thanks~ |
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j******0 发帖数: 258 | 7 Sjöblom, J., O. Svensson, M. Josefson, H. Kullberg and S. Wold, “An
evaluation of orthogonal signal correction applied to calibration transfer
of near infrared spectra,”
Chemo. and Intell. Lab. Sys.,
44, 229-244, 1998. |
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j******0 发帖数: 258 | 8 Wold, S., H. Antti, F. Lindgren, J. Ohman.
"Orthogonal signal correction of near-infrared spectra",
Chemometrics and Intelligent Laboratory Systems, 44: 175--185. 1998.
Many thanks! |
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s*********g 发帖数: 1107 | 9 Deconvolution of electrochemical impedance spectra for the identification of
electrode reaction
mechanisms in solid oxide fuel cells
Author(s): Schichlein H, Muller AC, Voigts M, Krugel A, Ivers-Tiffee E
Source: JOURNAL OF APPLIED ELECTROCHEMISTRY Volume: 32 Issue: 8
Pages: 875-882
Published: AUG 2002 |
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d**a 发帖数: 3715 | 10 得到UV-Vis Spectra 后,怎么计算optical band gap? |
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d**a 发帖数: 3715 | 11 我的那个6.0版本45天的试用期过了。主要想做一下coupling constant 和NMR spectra
stack 分析。谢谢 |
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i*********s 发帖数: 2451 | 12 【作者】:
Author(s): Sawai Y (Sawai, Yoshitaka)1, Takimoto B (Takimoto, Baku)1, Nabika
H (Nabika, Hideki)1, Murakoshi K (Murakoshi, Kei)1
【文题】:
Anti-Stokes/Stokes ratio of surface-enhanced Raman scattering spectra
observed at a metal nano-gap arrayed on a solid surface
【期刊名,年份,卷,起止页码】:
Source: CANADIAN JOURNAL OF ANALYTICAL SCIENCES AND SPECTROSCOPY Volume:
52 Issue: 3 Pages: 142-149 Published: 2007
【链接】:
http://apps.isiknowledge.com/full_record.do?product=WOS&search_mode=GeneralSearch |
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b******k 发帖数: 37 | 13 Journal of Raman Spectroscopy
1975 ,Volume 3 Issue 2-3, Pages 133 - 141
Raman spectra of gases. XV: Hydrazine and hydrazine-d4
J. R. Durig, M. G. Griffin, R. W. Macnamee
Many thanks. |
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i*o 发帖数: 202 | 14 【 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!! |
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f******n 发帖数: 137 | 15 I guess it might be caused by the scattering of large particles crashing out
during the evaporation of the solvent. There is nothing wrong with the
instrument itself because it always give some reasonable spectra for
solutions. |
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g********9 发帖数: 14 | 16 1) Evaluation of a delayed coking process by 1H and 13C NMR spectroscopy. 1.
Material balances.
Rodriguez, Joaquin; Tierney, John W.; Wender, Irving.
Fuel (1994), 73(12), 1863-9.
2) Evaluation of a delayed coking process by 1H and 13C NMR spectroscopy. 2.
Detailed interpretation of liquid NMR spectra.
Rodriguez, Joaquin; Tierney, John W.; Wender, Irving.
Fuel (1994), 73(12), 1870-5.
j*******[email protected]
Thanks. 10 Baozi |
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d********y 发帖数: 176 | 18 i forgot to mention that gas phase IR spectra usually have P/R branches
with many sharp bands. the feature you mentioned didn't have that.
IR
cut |
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d****i 发帖数: 360 | 19 Carbon-13 and Proton Nuclear Magnetic Resonance Spectra of Veratrum
Alkaloids
First PageHi-Res PDF[420 KB]Citing ArticlesWilliam Gaffield, Mabry Benson,
Robert E. Lundin, Richard F. Keeler
J. Nat. Prod., 1986, 49 (2), pp 286–292
Thanks a lot! |
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f*********e 发帖数: 1144 | 20 sounds quite complicated for undergrads:) espcially the de novo part, I have
a lot of trouble manually interpreting spectra as a postdoc in MS field |
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b****u 发帖数: 2771 | 23 你把条件具体些 不然大家怎么帮你
蛋白多大, 是单蛋白还是混合物
Do you observe good LC peaks, good MS2 spectra?
1) 楼上 说的 换protease, you can try Glu-C
2) in ur search engine (e.g MASCOT) include methionine oxidation,and N, Q
deamidation, (or 1 C13)
one mis-cleavage. After the first search, select all query and re-search
with error tolerant search. BTW, make sure your search settings are
compliance to the LTQ characteristics.
3) the most comprehensive way,(may be overkill for your purpose) you can use
MUDPIT setup and do a shor... 阅读全帖 |
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m*********s 发帖数: 323 | 24 No, do not trust the H-NMR from Chemdraw (11). Far from the real spectra. ( |
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k***e 发帖数: 62 | 25 Ultraviolet–visible absorption spectra of the colloidal metallic elements
J. Chem. Soc., Faraday Trans., 1991, 87, 3881-3891
多谢多谢! |
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b*****y 发帖数: 175 | 26 Thanks a lot for all your responses.
I did just inject the sample directly (highly acidic) and I did not have a
good spectra at all. The reason I am doing basic pH was based on our
previous experience and the recommended column conditions. Also I always
perform intact protein analysis and tryptic digestion peptide analysis
together. Trypsin works best at pH7-8 so I always try to use ammonium
bicarbonate to achieve this pH and have minimum salt after lyophilization.
I highly suspect vitamin C con... 阅读全帖 |
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w*****9 发帖数: 1 | 27 Describe the purpose of this job and why it exists:
The xxx Chemical Company is offering an exciting and challenging opportunity for an Inorganic Chemist. This position is responsible for developing nano-scale inorganic particles for photovoltaic.
The individual must have experience and in-depth knowledge of nano inorganic particle synthesis. The experience on synthesis of down-converting or up-converting materials for photovoltaic applications is highly preferred.
Qualifications:
Ph.D degree ... 阅读全帖 |
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j******0 发帖数: 258 | 28 Paper
Standardization of Raman spectra for transfer of spectral libraries across
different instruments
Jason D. Rodriguez, Benjamin J. Westenberger, Lucinda F. Buhse and John F.
Kauffman
Analyst, 2011, Advance Article
DOI: 10.1039/C1AN15636E |
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v*****s 发帖数: 20290 | 29 absorption spectra? 完全没问题。 |
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w**********n 发帖数: 90 | 31 I, II, III, IV的电子版,非常感谢! |
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h********g 发帖数: 143 | 37 Also, the 13C-79Br coupling constant is about 135 Hz.
But the coupling constant in my spectra are 26 Hz and 16 Hz. |
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h****a 发帖数: 580 | 38 Title: H-1-NMR SPECTRA AND CONFORMATIONS OF PROPANE-1,2-DIOL, MESO-RACEMIC
AND RACEMIC BUTANE-2,3-DIOLS, AND SOME ALDITOLS IN NONAQUEOUS MEDIA
Author(s): GALLWEY FB; HAWKES JE; HAYCOCK P; et al.
Source: JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2 Issue: 11
Pages: 1979-1985 DOI: 10.1039/p29900001979 Published: NOV 1990
请发到 i*************[email protected]
Thanks. |
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z***3 发帖数: 496 | 39 D. Owens and R. Wendt, "Estimation of the Surface Free Energy of Polymers",
Journal of Applied Polmer Science, v13 (1969) 1741.
F. Boerioa, J. Boerioa, and R. Bozian, "Infrared Spectroscopy of Thin
Organic Films on Metal Surfaces", Applied Surface Science, v31 (1988) 42
A. Girlando and J. Gordon, "Raman Spectra of Molecules on Metal Surfaces",
Surface Science, v101 (1980) 417.
Thanks for your help :)
2*********[email protected] |
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s********n 发帖数: 235 | 40 Title: INVESTIGATION OF THE FERMI EDGE IN SODIUM TUNGSTEN BRONZES BY PHOTO-
ELECTRON SPECTROSCOPY
Author(s): EGDELL, RG; HILL, MD
Source: CHEMICAL PHYSICS LETTERS Volume: 85 Issue: 2 Pages: 140-144
DOI: 10.1016/0009-2614(82)80318-7 Published: 1982
http://www.sciencedirect.com/science/article/pii/00092614828031
Title: OPTICAL TRANSITION TO FERMI LEVEL IN NAXWO3
Author(s): GIULIANI, G; STELLA, A; GUSTINET.A
Source: PHYSICS LETTERS A Volume: A 38 Issue: 7 Pages: 515-& DOI: 10.
1016/0... 阅读全帖 |
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K*********e 发帖数: 183 | 41 It is OK, I can accept that I made mistakes and the fact that I forgot
things I used to know.
OK, I fixed my last question, I will say if it is in acidic condition (
Positive mode), the bottom two -OHs are basic enough to take the H+.
When I was doing my chores, I realized no matter what, alcohol should be
more acidic than basic, it is my bad.
I still have questions, but without the spectra, it is hard to discuss
further.
Thank you anyway. |
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K*********e 发帖数: 183 | 42 It is OK, I can accept that I made mistakes and the fact that I forgot
things I used to know.
OK, I fixed my last question, I will say if it is in acidic condition (
Positive mode), the bottom two -OHs are basic enough to take the H+.
When I was doing my chores, I realized no matter what, alcohol should be
more acidic than basic, it is my bad.
I still have questions, but without the spectra, it is hard to discuss
further.
Thank you anyway. |
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a*****e 发帖数: 97 | 43 We even separated the peak from the mixture by LC fraction collector and
shows the 406 and 264nm. This peak is interesting coze it has the above UV
spectra with little fluoresence at(ex 420 em 480nm) and may be a new
cofactor. Hard to pinpoint a really new guy in metabolomics.
mixture. |
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a*****e 发帖数: 97 | 44 We even separated the peak from the mixture by LC fraction collector and
shows the 406 and 264nm. This peak is interesting coze it has the above UV
spectra with little fluoresence at(ex 420 em 480nm) and may be a new
cofactor. Hard to pinpoint a really new guy in metabolomics.
mixture. |
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i*n 发帖数: 9793 | 45 E. Dinc, F. Onur, Application of a new spectrophotometric method for the ana
lysis of a ternary mixture
containing metamizol, paracetamol and caffeine in tablets. Analytica chimica
acta 359 (1998) 93-106.
A. Afkhami, M. Bahram, Mean centering of ratio spectra as a new spectrophoto
metric method for the
analysis of binary and ternary mixtures. Talanta 66 (2005) 712-720. |
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s********n 发帖数: 235 | 46 Title: Bi-209 NQR spectra of Bi2M4O9 (M=Al, Ga) and Bi2Ge3O9
Author(s): Kravchenko, EA; Hai, FS; Kargin, YF
Source: INORGANIC MATERIALS Volume: 33 Issue: 8 Pages: 847-849
Published: AUG 1997
Title: OPTICAL-PROPERTIES OF BI2GE3O9 SINGLE-CRYSTALS - X-RAY-IRRADIATION
EFFECTS
Author(s): ZALDO, C; CONTRERAS, L; ARIZMENDI, L; et al.
Source: PHYSICA STATUS SOLIDI A-APPLIED RESEARCH Volume: 114 Issue: 1
Pages: 397-405 DOI: 10.1002/pssa.2211140142 Published: JUL 16 1989
Title: CRYSTAL-GRO... 阅读全帖 |
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h***o 发帖数: 350 | 49 Temperature Characteristics of Raman Spectra in Nanometer Material Titanium
Dioxide
Wu Xijun1,2, Zhang Ming-sheng1, Yin Zhen1,3, Ji Xiaoli1,4 and Chen Qiang1
1994 Chinese Phys. Lett. 11 685
doi:10.1088/0256-307X/11/11/008
http://iopscience.iop.org/0256-307X/11/11/008
Thank you very much! |
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