Results 1 to 10 of about 31,861 (162)

Quantitative analysis of pharmaceutical products by spectrophotometry in the infrared region: a practical review

Drug Analytical Research, 2023
Quality control in the chemical-pharmaceutical industry to identify and quantify the active ingredient has fundamental importance to guarantee the quality of the final product. Its lack can generate irreparable consequences, and therefore its existence is extremely important.
Kogawa, Ana, Salgado, Hérida Regina Nunes   +1 more
openaire   +6 more sources

Spectrophotometry of compact embedded infrared sources in the 0.6-1.0 micron wavelength region [PDF]

The Astrophysical Journal, 1984
Spectrophotometry at 20 Å resolution in the 0.6- 1.0 μm wavelength range is presented for the compact embedded infrared sources GL 490, GL 437S, IC 1848A, GL 961, S106/IRS 3, M17/IRS 1, S235B, and M8E, for the compact H II regions GL 437W and NGC 7538/IRS 2, and for the visible objects LkHα 101, MWC 297, MWC 349, V645 Cyg, and the fan nebula ...
McGregor, P. J., Persson, S. E., Cohen, J. G.   +2 more
openaire   +2 more sources

Regional Differences of Hemodynamics and Oxygenation in the Human Calf Muscle Detected with Near-Infrared Spectrophotometry [PDF]

Journal of Vascular and Interventional Radiology, 2007
Measurements in muscle tissue are often performed at a selected single location over the muscle of interest. The hypothesis is that the values obtained reflect the status within the entire muscle or muscle group. This, however, may not be the case. The study was performed to investigate whether this hypothesis is true for hemodynamics and oxygenation ...
Wolf, Ursula, Wolf, Martin, Choi, Jee H, Paunescu, L Adelina, Michalos, Antonios, Gratton, Enrico   +5 more
openaire   +4 more sources

Autotrophic and Heterotrophic Growth Conditions Modify Biomolecole Production in the Microalga Galdieria sulphuraria (Cyanidiophyceae, Rhodophyta) [PDF]

, 2020
Algae have multiple similarities with fungi, with both belonging to the Thallophyte, a polyphyletic group of non-mobile organisms grouped together on the basis of similar characteristics, but not sharing a common ancestor.
Barone, R., Carraturo, F., D'Elia, L., De Napoli, L., Gambino, E., Guida, M., Lorito, M., Marra, R., Mayol, L., Paolucci, M., Pollio, A., Vinale, F., Volpe, M. G., Woo, S. L.   +13 more
core   +1 more source

Bispectrum speckle interferometry observations and radiative transfer modelling of the red supergiant NML Cyg: Multiple dust-shell structures evidencing previous superwind phases [PDF]

, 2001
(abridged) NML Cyg is a highly evolved OH/IR supergiant and supposed to be among the most luminous supergiants in the galaxy. We present the first diffraction limited 2.13micron observations of NML Cyg with 73mas resolution.
Benson, Blöcker, Boboltz, Bowers, David, de Jager, Diamond, Dickinson, Draine, Dyck, Dyck, Dyck, Dyck, Dyck, Dyck, Engels, Fix, Forbes, G. Weigelt, Gauger, Goss, Gregory, Habing, Hackwell, Harris, Harvey, Heger, Herbig, Hofmann, Hyland, Ivezic, Ivezic, Johnson, Johnson, Johnson, Justtanont, K.-H. Hofmann, Knapp, Kruzewski, Krüger, Labeyrie, Langer, Lee, Lohmann, Low, Masheder, Mathis, Merrill, Monnier, Monnier, Morris, Morris, Neugebauer, Ossenkopf, Perrin, Richards, Ridgway, Savage, Schwartz, Schwartz, Sibille, Snyder, Sopka, Strecker, Strecker, Sudol, Suh, T. Blöcker, Walmsley, Weigelt, Wilson, Winters, Y. Balega   +72 more
core   +2 more sources

The timing and location of dust formation in the remnant of SN 1987A [PDF]

, 2014
The discovery with the {\it Herschel Space Observatory} of bright far infrared and submm emission from the ejecta of the core collapse supernova SN\,1987A has been interpreted as indicating the presence of some 0.4--0.7\,M$_\odot$ of dust.
Barlow, M. J., Ercolano, B., Matsuura, M., Wesson, R.   +3 more
core   +4 more sources

Observations of convection in A-type stars [PDF]

, 2004
Convection and turbulence in stellar atmospheres have a significant effect on the emergent flux from A-type stars. The recent theoretical advancements in convection modelling have proved a challenge to the observers to obtain measurements with sufficient
Smalley, Barry
core   +2 more sources

The high-field polar RX J1007.5-2017 [PDF]

, 2012
We report optical and X-ray observations of the high-field polar RXJ1007.5-2017 performed between 1990 and 2012. It has an orbital period of 208.60 min determined from the ellipsoidal modulation of the secondary star in an extended low state.
Beuermann, K., Burwitz, V., Reinsch, K., Schwope, A. D., Thomas, H. -C.   +4 more
core   +2 more sources

5-micron photometry of late-type dwarfs [PDF]

, 2001
We present narrowband-M photometry of nine low-mass dwarfs with spectral types ranging from M2.5 to L0.5. Combining the (L'-M') colours derived from our observations with data from the literature, we find colours consistent with a Rayleigh-Jeans flux ...
Berriman G., I. Neill Reid, Johnson H. L., Jones H. R. A., K. L. Cruz, Reid I. N., Sinton W. M., Tsuji T., Wehrse R.   +8 more
core   +3 more sources

Transit spectrophotometry of the exoplanet HD189733b. I. Searching for water but finding haze with HST NICMOS [PDF]

, 2009
We present Hubble Space Telescope near-infrared transit photometry of the nearby hot-Jupiter HD189733b. The observations were taken with the NICMOS instrument during five transits, with three transits executed with a narrowband filter at 1.87 microns and
A. Lecavelier des Etangs, A. Vidal-Madjar, Ballester, Barber, Bigot, Bouchy, Brown, Burrows, Carter, Charbonneau, Claret, D. K. Sing, Deming, Désert, Désert, Fortney, Fortney, G. E. Ballester, G. Hebrard, G. W. Henry, Grillmair, Grillmair, Henry, Hubeny, Hébrard, J.-M. Désert, Knutson, Knutson, Knutson, Lecavelier des Etangs, Lecavelier des Etangs, Mandel, Moutou, Neckel, Pont, Pont, Pont, Pont, Pál, Redfield, Sing, Sing, Snellen, Swain, Swain, V. Parmentier, Vidal-Madjar, Vidal-Madjar, Vidal-Madjar, Winn, Zahnle   +50 more
core   +3 more sources