Results 81 to 90 of about 55,459 (323)

Time-Resolved Ultraviolet Observations of the Globular Cluster X-ray Source in NGC 6624: The Shortest Known Period Binary System

, 1997
Using the Faint Object Spectrograph (FOS) aboard the Hubble Space Telescope, we have obtained the first time-resolved spectra of the King et al. ultraviolet-bright counterpart to the 11-minute binary X-ray source in the core of the globular cluster NGC ...
Auriere M., Auriere M., Bruce Margon, Deutsch E. W., Eric W. Deutsch, Homer L., Richard G. Allen, Ronald A. Downes, Scott F. Anderson   +8 more
core   +1 more source

Self‐Assembled Fluorophore‐Based Probe for Efficient Detection of Endogenous Nitroreductase Activity in Escherichia Coli

Advanced Optical Materials, EarlyView.
A self‐assembled fluorophore‐based probe for nitroreductase is created as the result of structure‐activity relationship studies, having a superior signal‐to‐noise ratio with enough reactivity toward endogenous nitroreductase in Escherichia coli. Abstract Fluorescent probes are functional molecules whose fluorescent properties are transformed as a ...
Eiji Nakata, Yoshihiro Yukimachi, Hirokazu Kariyazono, Yoshijiro Nazumi, Futa Komatsubara, Mashal Asif, Yoshihiro Uto, Hitoshi Hori   +7 more
wiley   +1 more source

VALIDATION METHOD OF ULTRAVIOLET SPECTROPHOTOMETRY DETERMINATION OF CONTENT IN AMBROXOL HCl TABLET

Jurnal Natural, 2015
Ambroxol Hydrochloride (Ambroxol HCI) is one of mucolytic drugs that is commonly used to dilute thesecretion within the respiratory tract. This process is completed by lowering the viscosity of mucopolysaccharides, in which its characteristic which is ...
Tedy Kurniawan Bakri, Fathur Rahman Harun, Misrahanum ., Sadli .   +3 more
doaj   +2 more sources

Reactivity and kinetics of 1,3-butadiene under ultraviolet irradiation at 254 nm

BMC Chemistry, 2022
The reaction process of gaseous 1,3-butadiene following ultraviolet irradiation at the temperature range from 298 to 323 K under nitrogen atmosphere was monitored by UV–vis spectrophotometry. A gaseous mini-reactor was used as a reaction vessel and could
Min Liang, Chang Yu, Suyi Dai, Haijun Cheng, Weiguang Li, Fang Lai, Li Ma, Xiongmin Liu   +7 more
doaj   +1 more source

Reduced Wolf-Rayet Line Luminosities at Low Metallicity

, 2005
New NTT/EMMI spectrophotometry of single WN2-5 stars in the Magellanic Clouds are presented, from which HeII 4686 line luminosities have been derived, and compared with observations of other Magellanic Cloud WR stars.
Barba, Bartzakos, Bouchet, Breysacher, Breysacher, Brown, Chandar, Chen, Conti, Conti, Crowther, Crowther, Crowther, Crowther, Crowther, Crowther, de Mello, Foellmi, Foellmi, Galama, Garnett, Gibson, Gräfener, Gräfener, Heap, Hilditch, Hillier, Hillier, Hillier, Howarth, Izotov, Izotov, Kingsburgh, Kingsburgh, Koenigsberger, L. J. Hadfield, Langer, Legrand, Li, Lundström, MacFadyen, Maeder, Massey, Massey, Massey, Massey, Massey, Meynet, Moffat, Morgan, Morris, P. A. Crowther, Pagel, Schaerer, Schaerer, Schaerer, Schmutz, Schmutz, Seaton, Shapley, Smith, Smith, Smith, Smith, Smith, Stanek, Terlevich, Torres-Dodgen, Udalski, Vacca, Van Marle, Vink, Vreeswijk, Walborn   +73 more
core   +1 more source

Far-ultraviolet spectrophotometry of SPICA

The Astrophysical Journal, 1989
A spectrum of the star Spica (Alpha Virginis) from 960 to 1270 A was recorded by a rocket-borne spectrograph March 13, 1988. The spectrum, which has 3.4 A resolution, shows a much sharper drop-off in intensity near 1050 A than similar measurements made by the Voyager UVS, but is in good agreement with the spectrum obtained by Brune et al.
Webster Cash, Timothy A. Cook, Theodore P. Snow   +2 more
openaire   +2 more sources

Polarization‐Dependent Color Modulation in Electrodeposited Cellulose Nanocrystals and Birefringent Multilayers

Advanced Optical Materials, EarlyView.
This work demonstrates that wavelength selective reflection of circularly polarized light (CPL) of both handedness (right‐R or left‐L) can be achieved from self‐assembled cellulose nanocrystals (CNCs), breaking the inherent limitation of obtaining only L‐CPL reflection.
Alexandre Fonseca, Paul Grey, Bruno Mendes, Wadood Y. Hamad, Elvira Fortunato, Rodrigo Martins, Luís Pereira, Diana Gaspar   +7 more
wiley   +1 more source

Simultaneous determination of moxifloxacin and cefixime by first and ratio first derivative ultraviolet spectrophotometry

Chemistry Central Journal, 2012
Background The new combination of moxifloxacin HCl and cefixime trihydrate is approved for the treatment of lower respiratory tract infections in adults.
Attimarad Mahesh, Al-Dhubiab Bander E, Alhaider Ibrahim A, Nair Anroop B, N Sree, K Mueen   +5 more
doaj   +1 more source

Ultraviolet cometary spectrophotometry [PDF]

During the 13 shifts dedicated to observations of Comet Bradfield (including the two European shifts), five high dispersion exposures were obtained with the LWR camera, 27 low dispersion images with the LWR camera, and 36 low dispersion images with the ...
Ahearn, M. F.
core   +1 more source

Index to NASA Tech Briefs, 1975 [PDF]

, 1976
This index contains abstracts and four indexes--subject, personal author, originating Center, and Tech Brief number--for 1975 Tech ...

core   +1 more source