Results 1 to 10 of about 32,182 (211)

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

open access: diamondDrug 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.
Ana Kogawa, Hérida Regina Nunes Salgado
doaj   +12 more sources

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

open access: greenThe 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 associated
Peter J. McGregor   +2 more
openalex   +6 more sources

Infrared array imaging and spectrophotometry of the nuclear region of the 'hot-spot' galaxy NGC 2903

open access: bronzeThe Astrophysical Journal, 1988
Previous studies of the hot-spot galaxy NGC 2903 at a variety of wavelengths have shown that considerable star formation is occurring within the complex hot-spot structures in this galaxy's nuclear region. A K-band (2.2 microns) image of the galaxy's nuclear region has been obtained with an infrared CCD and compared to V-band (0.55 micron) and 1-micron
D. A. Simons   +5 more
openalex   +3 more sources

A study of low surface brightness spiral galaxies. II Optical surface photometry, infrared photometry, and H II region spectrophotometry

open access: closedThe Astrophysical Journal Supplement Series, 1983
Presentation d'un ensemble important d'observations photometriques et spectroscopiques obtenues pour un echantillon de galaxies spirales de faible brillance de surface (FBS).
W. Romanishin, K. M. Strom, S. E. Strom
openalex   +3 more sources

The Attractant Bioactivity Test of Semi-Polar Fraction of the Datuan Stem Bark (Ficus vasculosa Wall. Ex Miq) against Warehouse Pest (Sitophilus oryzae L.)

open access: yesJournal of Pure and Applied Microbiology, 2021
Bioactive isolation was performed on the stem bark of Datuan (Ficus vasculosa Wall. Ex Miq), and extraction was carried out via the maceration method using acetone as a solvent. Furthermore, an attractant bioactivity test was conducted on acetone extract,
Syaiful Bahri   +4 more
doaj   +1 more source

Development of Methods for Identifying BAS Exhibiting Anticoagulant Activity

open access: yesРазработка и регистрация лекарственных средств, 2023
Introduction. Vascular pathologies associated with thromboembolism are common complications and the leading cause of morbidity and mortality among patients of various nosological groups.
E. S. Berezina   +4 more
doaj   +1 more source

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

open access: yesJournal 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   +5 more
openaire   +4 more sources

Spectroscopy Characteristics and Color-Influencing Factors of Green Iron-Bearing Elbaite

open access: yesCrystals, 2023
The color-influencing factors and spectroscopy of 22 green elbaite samples were investigated using X-Rite SP62 spectrophotometry, ultraviolet–visible (UV–Vis) spectroscopy, laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), and ...
Lianyi Cui   +3 more
doaj   +1 more source

Do Water Molecules Displaced by Hydrophobic Interactions Stabilize Antigen-Antibody Binding? Physico-chemical background of antigen-antibody reactions analyzed by fluorescent and Fourier-transform infrared spectroscopy on FITC – anti-FITC (IgG1) model

open access: yesSoutheastern European Medical Journal, 2022
BACKGROUND: Antigen-antibody reactions are a special field of molecular interactions. The physico-chemical nature of antigen-antibody binding and ligand-induced changes in the fine molecular structures of antigens during immunocomplex formation are less ...
Peter Nemeth
doaj   +1 more source

Synthesis and Characterization of SCDs/TiO2 Composite

open access: yesCHEESA, 2022
Synthesis of sulphur-doped carbon nanodots immobilized on the TiO2 surface (SCDs/TiO2) composite was carried out using the sol-gel method with SCDs and titanium tetraisopropoxide (TTIP) as precursors. SCDs were prepared from citric acid monohydrate, urea,
Anthoni Batahan Aritonang   +4 more
doaj   +1 more source

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