Results 11 to 20 of about 339,817 (328)

Generating a Sustained Oxygen-Stable Atomic Concentration in a High-Temperature Gas Effect Investigation

Micromachines, 2023
Modulated laser absorption spectroscopy is an ideal technique for evaluating flow-field parameters and determining flow-field quality by measuring the atoms dissociated in high-temperature environments.
Dong Zhi, Yu Chang, Long Huang, Wei Chen, Yunfei Li, Luping Wang, Lunhua Deng   +6 more
doaj   +1 more source

Determination and evaluation of principal minerals in Negella sativa by atomic absorption technical methods

مجلة بغداد للعلوم, 2011
Determination and evaluation of principal minerals in Negella sativa by atomic absorption technical methods were showed, using wet ashing method. This work was done on Negella sativa because of wide using of this plant in many formulations ( in ...
Baghdad Science Journal
doaj   +1 more source

Temporal build-up of electromagnetically induced transparency and absorption resonances in degenerate two-level transitions [PDF]

, 2002
The temporal evolution of electromagnetically induced transparency (EIT) and absorption (EIA) coherence resonances in pump-probe spectroscopy of degenerate two-level atomic transition is studied for light intensities below saturation.
A. Lezama, A. Lezama, A. Lezama, A.D. Greentree, A.M. Akulshin, A.V. Taichenachev, B.D. Agap’ev, D.F. Phillips, E. Arimondo, E.A. Korsunsky, E.A. Korsunsky, F. Renzoni, F. Renzoni, F. Renzoni, H. Failache, H.X. Chen, I.V. Jyotsna, J.R. Kuklinsky, L.V. Hau, M. Fleischhauer, M. Fleischhauer, M.M. Kash, P. Valente, P. Valente, S.E. Harris, Y. Dancheva, Yong-qing Li   +26 more
core   +2 more sources

Recent Applications of Flame Atomic Absorption Spectrometry to Environmental Measurements [PDF]

, 2002
Atomic absorption spectroscopy is very useful for the determination of a large number of elements, especially at trace levels. It is a widely used technique for analysis of a wide variety of sample matrices including biota, soils, and water.
Janusa, Michael A
core   +2 more sources

ASAS: Computational code for Analysis and Simulation of Atomic Spectra

SoftwareX, 2017
The laser isotopic separation process is based on the selective photoionization principle and, because of this, it is necessary to know the absorption spectrum of the desired atom.
Jhonatha R. dos Santos, Luiz F.N. Barreta, Maria E. Sbampato, Marcelo G. Destro   +3 more
doaj   +1 more source

The Shroud Around the Twin Radio Jets in NGC 1052 [PDF]

, 2002
(Abridged) We discuss multiple VLBI continuum and spectral line observations and WSRT spectroscopy of NGC 1052. Sub-parsec scale features move outward at approximately 0.26c in bi-symmetric jets, most likely oriented near the plane of the sky. Absorption
Antonucci, Barth, Becklin, Braatz, Carter, Claussen, Cohen, Davies, E. Ros, Frayer, Gabel, Guainazzi, Guainazzi, H. J. van Langevelde, Hagiwara, Hagiwara, Heeschen, Heeschen, Heeschen, J. A. Zensus, Jones, Jones, K. I. Kellermann, Kaastra, Kameno, Kellermann, Kellermann, Knapp, Levinson, M. H. Cohen, O'Dea, Omar, Paragi, Pihlström, Plana, R. C. Vermeulen, Sargent, Shostak, van Gorkom, van Langevelde, van Langevelde, Vermeulen, Walker, Wang, Weaver, Wiklind, Wrobel, Zensus   +47 more
core   +3 more sources

Detection of Cold Atomic Clouds in the Magellanic Bridge [PDF]

, 1998
We report a detection of cold atomic hydrogen in the Magellanic Bridge using 21-cm absorption spectroscopy toward the radio source B0312-770. With a column density of N_HI=1.2E20 cm^-2, a maximum absorption optical depth of tau=0.10 and a maximum 21-cm ...
Courtes G., Despois D., Dickey J. M., Henry A. Kobulnicky, Hindman J. V., Israel F. P., John M. Dickey, Johnson P. G., Kalberla P. W. M., Meaburn J., Mebold U., Murai T., Otrupcek R., Pagel B. E. J., Rubio M., Schwering P. B. W., Shapley H.   +16 more
core   +2 more sources

Measurement of Cellular Copper in Rhodobacter capsulatus by Atomic Absorption Spectroscopy

Bio-Protocol, 2016
Copper is an essential micronutrient and functions as a cofactor in many enzymes such as heme-Cu oxygen reductases, Cu-Zn superoxide dismutases, multi-copper oxidases and tyrosinases.
Petru-Iulian Trasnea, Dorian Marckmann, Marcel Utz, Hans-Georg Koch   +3 more
doaj   +1 more source

Organotin compounds in marine water and sediments from the port of Ensenada, Baja California, Mexico

Ciencias Marinas, 1997
 During September and October 1995, samples of surface sediments and water were collected to develop an analytical set-up to determine the concentrations of the organic compounds known as tributyltins (TBTs), including tributyl-, dibutyl- and ...
V Macías-Carranza, JV Macías-Zamora, JA Villaescusa-Celaya   +2 more
doaj   +1 more source

Investigation and evaluation of cadmium in crabs sold in Beijing from 2018 to 2020

Zhongguo shipin weisheng zazhi, 2021
ObjectiveTo detect the content of Cadmium (Cd) in crab sold in Beijing from 2018 to 2020 and carry out health risk assessment.MethodsRandom sampling method was adopted, common crab sold in Beijing were sampled.
XING Shige, Liu Tong, LI Yongliang, YAO Guihong, ZHANG Yujia, WANG Haiyue, ZHANG Feng   +6 more
doaj   +1 more source