Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Alexander Kachanov"'
Publikováno v:
Scientific Review: Theory and Practice. 9:1738-1747
Autor:
Igor Gerasimenko, Sergey Minaev, Mikhail Annenkov, Elena Tovkan, Alexander Obedin, Alexander Kachanov
Publikováno v:
Medical news of the North Caucasus. 11
Исследование посвящено актуальной проблеме ранней реабилитации новорожденных с некротическим энтероколитом (НЭК). Пациенты были распр
Publikováno v:
Journal of Chromatography A. 1216:3423-3430
Thermal lensing (TL) permits ultra-sensitive measurements of optical absorption of analytes in very small liquid volumes. We report the construction and use of a TL detector based on pulsed ultraviolet (UV) laser excitation (266 nm). We applied this
Autor:
Boris Kharlamov, Ed H. Wahl, David R. Bowling, Bernard Fidric, Chris W. Rella, Sergei Koulikov, Bruce A. Richman, Sze Meng Tan, Alexander Kachanov, Barbara A. Paldus, Shashi Kalaskar, Eric R. Crosson
Publikováno v:
Isotopes in Environmental and Health Studies. 42:21-35
Recent measurements of carbon isotopes in carbon dioxide using near-infrared, diode-laser-based cavity ring-down spectroscopy (CRDS) are presented. The CRDS system achieved good precision, often better than 0.2 per thousand, for 4% CO2 concentrations
Publikováno v:
Optics express. 13(9)
High fluences inside cavity ring-down spectroscopy optical resonators lend themselves to fluorescence or nonlinear optical spectroscopy. An instrument at 488 nm was developed to measure extinction, and fluorescence of aerosols. A detection limit of 6
Publikováno v:
Analytical chemistry. 79(14)
A collinear-beam thermal lens detector has been constructed and its properties were characterized. Its application to the high-performance liquid chromatography (HPLC) separation of a mixture of five anthraquinone dyes dissolved in water shows a line
Autor:
Richard N. Zare, Alexander Kachanov
Publikováno v:
Frontiers in Optics 2007/Laser Science XXIII/Organic Materials and Devices for Displays and Energy Conversion.
Cavity ringdown spectroscopy, cavity-enhanced spectroscopy, and thermal lensing are compared as UV-Vis detectors for high performance liquid chromatography and capillary electrophoresis separations. Thermal lensing shows the best performance, yieldin
Publikováno v:
2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference.
We measured the isotopic ratio of 18O/16O in water using a cavity ring-down spectrometer operating near 1392 nm wavelength. Spectral scans took 5 seconds, and the per-scan ratio noise was 0.7 parts per thousand.
Publikováno v:
Analytical chemistry. 77(4)
We describe the use of liquid-phase continuous-wave cavity ring-down spectroscopy for the detection of an HPLC separation. This technique builds on earlier work by Snyder and Zare using pulsed laser sources and improves upon commercially available UV