نتایج جستجو برای: f d spectroscopy
تعداد نتایج: 977550 فیلتر نتایج به سال:
Four new triterpenoid saponins, 3-O-([beta-D-glucopyranosyl-(1-->2)]-beta-D-galactopyranosyl)-11alpha-methoxy-23-hydroxylongispinogenin, 3-O-([beta-D-glucopyranosyl-(1-->2)]-beta-D-galactopyranosyl)-11alpha-methoxy-23,29-dihydroxylongispinogenin, 3-O-([beta-D-glucopyranosyl-(1-->2)]-beta-D-galactopyranosyl)-29-hydroxysaikogenin F and 3-O-([beta-D-glucopyranosyl-(1-->2)]-beta-D-galactopyranosyl)...
M. Stanoiu,1,2,3 D. Sohler,4 O. Sorlin,2 Zs. Dombrádi,4 F. Azaiez,1 B. A. Brown,5 C. Borcea,3 C. Bourgeois,1 Z. Elekes,4 Zs. Fülöp,4 S. Grévy,2 D. Guillemaud-Mueller,1 F. Ibrahim,1 A. Kerek,6 A. Krasznahorkay,4 M. Lewitowicz,2 S. M. Lukyanov,7 J. Mrázek,8 F. Negoita,3 Yu.-E. Penionzhkevich,7 Zs. Podolyák,9 M. G. Porquet,10 P. Roussel-Chomaz,2 M. G. Saint-Laurent,2 H. Savajols,2 G. Sletten,11 J....
A novel podand based anion receptor bearing benzimidazole motifs as recognition sites was designed and synthesized by reaction of 1,7-bis(2'-methylbenzoate)-1,4,7-trioxaheptane and phenylenediamine. The binding properties of anionic guest with this receptor were studied using UV-Vis and fluorescence spectroscopy. These studies revealed that this receptor exhibit selective recognition towar...
We describe and characterize alternative configurations for Doppler-free polarization spectroscopy. The suggested apparatus enables complete pump/probe beam overlap and allows substantial miniaturization. Its utility and performance for narrow linewidth, high-stability frequency locking is discussed for the /5S(1/2)F=2>-->/5P(3/2)F(')>D(2) transition in (87)Rb.
A sensor system based on a continuous wave, external-cavity quantum-cascade laser (CW EC-QCL) was demonstrated for simultaneous detection of atmospheric H2O, HDO, N2O and CH4 using a compact, dense pattern multi-pass gas cell with an effective path-length of 57.6 m. The ECQCL with a mode-hop-free spectral range of 1225-1285 cm operating at ~7.8 μm was scanned covering four neighboring absorptio...
Pierluigi Cudazzo,1,2 Matteo Gatti,3,2,4 and Angel Rubio1,2,5 1Nano-Bio Spectroscopy Group, Departamento Fı́sica de Materiales, Universidad del Paı́s Vasco, Centro de Fı́sica de Materiales CSIC-UPV/EHU-MPC and DIPC, Avenida Tolosa 72, E-20018 San Sebastián, Spain 2European Theoretical Spectroscopy Facility (ETSF) 3Laboratoire des Solides Irradiés, École Polytechnique, CNRS-CEA/DSM, F-91128 Palaise...
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