Results 31 to 40 of about 209,601 (301)

‘Specific’ Interaction of Organic Compounds with Polyethylene

Adsorption Science & Technology, 1999
The ultraviolet absorption spectra of substituted benzenes incorporated in thin films of low-density polyethylene have been studied. Conclusions have been drawn regarding the 'specific' interactions between the polymer and pyridine, N,N-dimethylaniline ...
Nikolai V. Nikolenko, Helen S. Smirnova, Irina A. Shmarova   +2 more
doaj   +1 more source

Potentials of N-(2, 4-dinitro-1-naphthyl)-p-toluenesulphonamide and 2, 4-dinitro-1-naphthol as novel charge transfer acceptors in pharmaceutical analysis of some quinolones and cephalosporins

Future Journal of Pharmaceutical Sciences, 2022
Background Quinolones and cephalosporins are antibiotic agents with activity against Gram-positive and Gram-negative bacteria. They contain chromophores and amine groups which are electron-rich centres capable of donating electrons to electron-deficient ...
O. E. Umoh, O. A. Adegoke, D. E. Effiong
doaj   +1 more source

Croconic Acid Doped Triglycine Sulfate: Crystal Structure, UV-Vis, FTIR, Raman, Photoluminescence Spectroscopy, and Dielectric Properties

Crystals, 2022
Triglycine sulfate (TGS) single crystals doped with croconic acid (CA) were grown by evaporation from aqueous solutions. X-ray diffraction analysis shows a slight reduction in unit cell volume in TGS:CA compared to pure TGS crystals.
Elena Balashova, Aleksandr A. Levin, Valery Davydov, Alexander Smirnov, Anatoly Starukhin, Sergey Pavlov, Boris Krichevtsov, Andrey Zolotarev, Hongjun Zhang, Fangzhe Li, Hua Ke   +10 more
doaj   +1 more source

Iron abundances of B-type post-Asymptotic Giant Branch stars in globular clusters: Barnard 29 in M 13 and ROA 5701 in omega Cen [PDF]

, 2007
High resolution optical and ultraviolet spectra of two B-type post-Asymptotic Giant Branch (post-AGB) stars in globular clusters, Barnard 29 in M 13 and ROA 5701 in omega Cen, have been analysed using model atmosphere techniques. The optical spectra have
A. A. Zijlstra, Adelman, Auer, Barnes, Blöcker, Cacciari, Cardelli, Cheng, Cohen, Conlon, Conlon, Conlon, D'Antona, D. L. Lambert, De Boer, Deroo, Dixon, Dufton, Dufton, F. P. Keenan, Gies, Giridhar, Grevesse, Grigsby, H. M. A. Thompson, Hambly, Harris, Harris, Herwig, Howarth, Hubeny, Hubeny, Hubeny, Hunter, Hunter, Iben, J. V. Smoker, Kaufer, Kendall, Kendall, Kilian, Kilian, Kwok, Landsman, Landsman, Lee, Lehner, Mathis, Meyer, Meyer, Moehler, Moehler, Mooney, Mooney, Nahar, Napiwotzki, Nieva, Norris, Origlia, Oudmaijer, P. L. Dufton, Parthasarathy, Proffitt, R. S. I. Ryans, Ryans, Ryans, Savage, Sigut, Smith, Sneden, Snow, Thompson, Toner, Trundle, Tull, Valdes, Van Winckel, Van Winckel, Waters, Wilms, Yong, Zinn   +81 more
core   +2 more sources

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Identification of Two Kinds of Seawater Cultured Gray Pearls by Fourier Transform Infrared Spectroscopy and Ultraviolet-visible Absorption Spectroscopy

Yankuang ceshi, 2019
BACKGROUND Akoya pearl is a biomineralized organic gemstone. The mineral composition and microtextural analysis, and the identification method of color formation of this type of pearl are still lacking.
SHAO Hui-ping, YAN Xue-jun, YAN Jun, WANG Jin, YU Si-yi, PENG Qiu-jin, HU Xian-chao   +6 more
doaj   +1 more source

Absolute vacuum ultraviolet absorption spectra of picolines

Journal of Molecular Spectroscopy, 1986
Abstract Absolute extinction coefficient and oscillator strength values of 2-, 3-, and 4-picolines were found from their medium-resolution spectra in the region of 4.0–9.5 eV. Valence π→π ∗ and n→π ∗ transitions as well as a 3s Rydberg band are presented and discussed.
Kosmidis, C., Bolovinos, A., Tsekeris, P.   +2 more
openaire   +2 more sources

Interstellar H2 toward HD 147888

, 2011
The ultraviolet and far--ultraviolet spectra of HD 147888 allows to access the v=0 as well as higher vibrational levels of the ground H2 electronic level.
Abgrall, Agúndez, Black, Cartledge, Cartledge, Federman, Gnaciński, Jensen, Le Petit, Meyer, P. Gnaciński, Pan, Pan, Pineau des Forêts, Rachford, Rodrígez-Merino, Sheffer, Shippony, Shull, Snow, Snow, Sonnentrucker, Sternberg, Sultanov, van Dishoeck, Wilgenbus   +25 more
core   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

Observations of the SW Sextantis star DW Ursae Majoris with the Far Ultraviolet Spectroscopic Explorer

, 2003
We present an analysis of the first far-ultraviolet observations of the SW Sextantis-type cataclysmic variable DW Ursae Majoris, obtained in November 2001 with the Far Ultraviolet Spectroscopic Explorer.
Biro I. B., Casares J., Christian Knigge, Cynthia S. Froning, D. W. Hoard, Dhillon V. S., Dickinson R. J., Knox S. Long, Koester D., Norton A. J., Paula Szkody, Rosen S. R., Rosen S. R., Rutten R. G. M., Vogt N., Zhang E.   +15 more
core   +1 more source