Results 21 to 30 of about 47,074 (301)

Convection, Thermal Bifurcation, and the Colors of A stars [PDF]

, 1997
Broad-band ultraviolet photometry from the TD-1 satellite and low dispersion spectra from the short wavelength camera of IUE have been used to investigate a long-standing proposal of Bohm-Vitense that the normal main sequence A- and early-F stars may ...
Balona L. A., Berthet S., Boggess A., Bohlin R. C., Bohlin R. C., Bohm-Vitense E., Bohm-Vitense E., Bohm-Vitense E., Bohm-Vitense E., Cayrel R., Coupry M. F., Dravins D., Edvardsson B., Garhart M. P., Garhart M. P., Garhart M. P., Hauck B., Hilditch R. W., Kjeldsen H., Lane M. C., Lemke M., Lopez de Coca P., Malaise F., Mantegazza L., Monier R., Moon T. T., Napiwotzki R., Nichols J. S., Nordlund, Oliversen N., Saxner M., Simon T., Smalley B., Smalley B., Smalley B., Theodore Simon, Veer-Menneret C., Veer-Menneret C., Wayne B. Landsman   +38 more
core   +4 more sources

Screening of wheat grains enriched with wall-bound phenolic compounds

MethodsX, 2023
Phenolic compounds are dominant antioxidant factors in whole grains and are essential quality traits in future breeding programs. We proposed a robust set of methods for extraction, screening, and quantitative analysis of soluble and wall-bound (WB ...
Yi-Lin Gong, Jin-Ying Gou
doaj   +1 more source

Green Synthesis of Highly Luminescent Carbon Quantum Dots from Lemon Juice

Journal of Nanotechnology, 2019
Highly luminescent carbon dots (C-dots) were synthesized by the one-pot simple hydrothermal method directly from lemon juice using different temperatures, time, aging of precursors, and diluted solvents to control the luminescence of C‐dots. The obtained
Bui Thi Hoan, Phuong Dinh Tam, Vuong-Hung Pham   +2 more
doaj   +1 more source

UVB-311 nm phototherapy and NAD(+)/NADH metabolism in keratinocytes in patients with psoriasis

Przegląd Dermatologiczny, 2019
Narrow band (311 nm) UVB phototherapy is established treatment for psoriasis. DNA is a target for UVB via formation of cyclobutane pyrimidine dimers, which trigger loss of dendritic cells and macrophages, and inhibit CD4+ and CD8+ T cells.
Małgorzata Bernacka, Agata Liszewska, Ewa Robak, Anna Woźniacka, Jarosław Bogaczewicz   +4 more
doaj   +1 more source

A UV Spectrophotometric method for simultaneous determination of Ibuprofen and Paracetamol concentration in suspensions

Rwanda Medical Journal, 2023
INTRODUCTION: Paracetamol is a standard antipyretic and analgesic which is widely used since the 19th century. Currently, paracetamol is the first-line treatment for pain management of different types.
E. Mugwiza, I. Hahirwa, T. Umumararungu
doaj   +1 more source

Quantitative ultraviolet measurements on wetted thin-layer chromatography plates using a charge-coupled device camera [PDF]

, 2008
This paper presents the first study of the UV imaging of spots on thin-layer chromatographic plates whilst still wet with solvent. Imaging of spots of benzophenone during and after development was carried out using a charge-coupled device camera.
Bergstrom, E.T., Goodall, D.M., Lancaster, M., McCrossen, S., Myers, P.   +4 more
core   +1 more source

Interpreting Flux from Broadband Photometry [PDF]

, 2016
We discuss the transformation of observed photometry into flux for the creation of spectral energy distributions and the computation of bolometric luminosities.
Breeveld, Alice, Brown, Peter J., Roming, Peter W. A., Siegel, Michael   +3 more
core   +4 more sources

The effect of pH on the simultaneous determination of Sulfamethoxazole and Trimethoprim by Ultraviolet Spectrophotometry and Multivariate Calibration

Drug Analytical Research, 2017
Analytical techniques based on Ultraviolet (UV) spectrophotometry are widely used in pharmaceutical analysis, because they are simple and inexpensive. The choice of pH is critical in the development of univariate methods for pharmaceutical quantitation ...
Fabiana E.B. da Silva, Willian R.R. Almeida, Fávero R. Paula, Aline L.H. Müller, Érico M.M. Flores, Marco F Ferrão   +5 more
doaj   +9 more sources

Development and validation of RP-LC and uv spectrophotometric methods to assay bromopride in oral and injectable solutions

Química Nova, 2010
A reversed-phase liquid chromatographic (LC) and ultraviolet (UV) spectrophotometric methods were developed and validated for the assay of bromopride in oral and injectable solutions. The methods were validated according to ICH guideline.
Márcia Camponogara Fontana, Felipe Kellermann Hurtado, Micheli Wrasse, Aline Augusti Boligon, Tarcieli Pozzebon Venturini, Clarice Madalena Bueno Rolim, Ruy Carlos Ruver Beck   +6 more
doaj   +1 more source

M4-18: The planetary nebula and its WC10 central star [PDF]

, 1999
We present a detailed analysis of the planetary nebula M4-18 (G146.7+07.6) and its WC10-type Wolf-Rayet central star, based on high quality optical spectroscopy (WHT/UES, INT/IDS, WIYN/DensPak) and imaging (HST/WFPC2).
Crowther, Paul A., De Marco, Orsola
core   +3 more sources