Results 41 to 50 of about 1,928,738 (354)

Preresonance Raman spectra of methylpyridines

Journal of Raman Spectroscopy, 1990
AbstractPreresonance Raman spectra of methylpyridines (picolines) are presented for different incident laser wavelengths. A strong intensity variation of the non‐totally symmetric vibration 10α is observed, which implies a vibronic coupling of the lowest nπ* excited state with the next ππ* (B2u and B1u) states. In addition an intensity increase of some
Kosmidis, C., Bolovinos, A., Tsekeris, P.   +2 more
openaire   +2 more sources

Lymph node pathology using optical spectroscopy in cancer diagnostics [PDF]

, 2008
Raman and infrared spectroscopy are optical spectroscopic techniques that use light scattering (Raman) and light absorption (infrared) to probe the vibrational energy levels of molecules in tissue samples.
Vipond, M., M. Isabelle, N. Shepherd, Barr, Hugh, N. Stone, M. Vipond, Rogers, Keith, Shepherd, N., K. Rogers, H. Barr, Stone, N., Isabelle, Martin   +11 more
core   +1 more source

Rapid Discrimination of Clinically Important Pathogens Through Machine Learning Analysis of Surface Enhanced Raman Spectra

Frontiers in Microbiology, 2022
With its low-cost, label-free and non-destructive features, Raman spectroscopy is becoming an attractive technique with high potential to discriminate the causative agent of bacterial infections and bacterial infections per se. However, it is challenging
Jia-Wei Tang, Jia-Qi Li, Xiao-Cong Yin, Wen-Wen Xu, Ya-Cheng Pan, Qing-Hua Liu, Bing Gu, Bing Gu, Xiao Zhang, Liang Wang, Liang Wang   +10 more
doaj   +1 more source

Integrated waveguide and nanostructured sensor platform for surface-enhanced Raman spectroscopy [PDF]

, 2014
Limitations of current sensors include large dimensions, sometimes limited sensitivity and inherent single-parameter measurement capability. Surface-enhanced Raman spectroscopy can be utilized for environment and pharmaceutical applications with the ...
Pollard, M., Kalsi, S., Oo, Swe Zin, Pearce, S., Chen, R., Charlton, M.D.B   +5 more
core   +1 more source

An FT-Raman, FT-IR, and Quantum Chemical Investigation of Stanozolol and Oxandrolone

Biosensors, 2017
We have studied the Fourier Transform Infrared (FT-IR) and the Fourier transform Raman (FT-Raman) spectra of stanozolol and oxandrolone, and we have performed quantum chemical calculations based on the density functional theory (DFT) with a B3LYP/6-31G ...
Tibebe Lemma, Fabiano de Barros Souza, Claudio A. Tellez Soto, Airton A. Martin   +3 more
doaj   +1 more source

High-throughput computation of Raman spectra from first principles

Scientific Data, 2023
Raman spectroscopy is a widely-used non-destructive material characterization method, which provides information about the vibrational modes of the material and therefore of its atomic structure and chemical composition.
Mohammad Bagheri, Hannu-Pekka Komsa
doaj   +1 more source

Combined information from Raman spectroscopy and optical coherence tomography for enhanced diagnostic accuracy in tissue discrimination [PDF]

, 2014
We thank the UK EPSRC for funding, the CR-UK/EPSRC/MRC/DoH (England) imaging programme, the European Union project FAMOS (FP7 ICT, contract no. 317744) and the European Union project IIIOS (FP7/2007-2013, contract no. 238802).
C. Simon Herrington, Bavishna B. Praveen, Herrington, C.S., Andrew Riches, Bellini, N., Ashok, P.C., Praveen, B.B., Nicola Bellini, Riches, A., Dholakia, K., Praveen C. Ashok, Kishan Dholakia   +11 more
core   +1 more source

Effects of vinyl substitutions on resonance Raman spectra of (bacterio)chlorophylls [PDF]

, 1994
Soret resonance and Qy preresonance Raman spectra are reported and compared for a series of (bacterio)chlorophylls. Chlorophyll a, 2-acetylchlorophyll a, bacteriochlorophyll a and 2-vinylbacteriochlorophyll a were studied in the non-protic solvent ...
Scheer, Hugo, Lutz, M., Katheder, Ingrid, Mattioli, Tony A., Robert, B., Feiler, Ute   +5 more
core   +1 more source

UiO‐66 metal–organic frameworks in biomedicine: From structural tunability to bioimaging, photodiagnostics, and photodynamic cancer therapy

FEBS Open Bio, EarlyView.
UiO‐66(Zr) metal–organic frameworks are chemically stable, biocompatible, and highly tunable nanomaterials. Their modular structure enables controlled drug delivery, multimodal bioimaging, and light‐activated photodynamic therapy, supporting integrated diagnostic and therapeutic (theranostic) applications in cancer and biomedical research.
Veronika Huntošová, Grigorii Rakhalskii, Miroslav Almáši   +2 more
wiley   +1 more source

Vibrational analysis of Ag3(PO2NH)3, Na3(PO2NH)3.H2O, Na3(PO2NH)3.4H2O, [C(NH2)3]3(PO2NH)3.H2O and (NH4)4(PO2NH)4.4H2O [PDF]

, 2001
FT IR and FT Raman spectra of Ag3(PO2NH), (Compound I), Na3(PO2NH)3.H2O (Compound II), Na3(PO2NH)3.4H2O (Compound III), [C(NH2)3]3(PO2NH)3.H2O (Compound IV) and (NH4)4(PO2NH)4.4H2O (Compound V) are recorded and analyzed on the basis of the anions ...
Philip, Daizy, Stock, Norbert, Devanarayanan, S., Schnick, Wolfgang, John, Annamma   +4 more
core   +1 more source