Results 121 to 130 of about 158,534 (314)

An Electrochemical and Raman Investigation of Guanine as an Environmentally Friendly Corrosion Inhibitor for API 5L X65 Steel in HCl Solutions [PDF]

open access: yesMaterials Research
Guanine was investigated as a potential green corrosion inhibitor to API 5L X65 carbon steel in HCl 0.1 mol.dm-3 solution, at pH = 2.0, under hydrodynamic conditions using electrochemical, weight loss and Raman spectroscopy experiments.
Elaine F. Silva   +5 more
doaj   +1 more source

Chirality Induced Spin Selectivity – the Photoelectron View

open access: yesIsrael Journal of Chemistry, Volume 62, Issue 11-12, December 2022., 2022
Abstract In this short overview we discuss the manifestation of the chirality‐induced spin selectivity (CISS) effect in photoelectron spectroscopy experiments with direct spin analysis. Various systems, from the initially investigated monolayers of molecular biosystems and organic hepta‐helicene to recent chirally grown solid oxide films, are evaluated.
Paul V. Möllers   +2 more
wiley   +1 more source

Intermediate filaments spatially organize intracellular nanostructures to produce the bright structural blue of ribbontail stingrays across ontogeny

open access: yesFrontiers in Cell and Developmental Biology
In animals, pigments but also nanostructures determine skin coloration, and many shades are produced by combining both mechanisms. Recently, we discovered a new mechanism for blue coloration in the ribbontail stingray Taeniura lymma, a species with ...
Michael J. Blumer   +7 more
doaj   +1 more source

Refinement of synthetic guanine crystals for fast diamagnetic rotation

open access: yesAIP Advances, 2019
Synthetic guanine crystals, with the same magnetic controllable reflection property as a biogenic guanine crystal from fish scales, were prepared using a classical Ostwald ripening method for crude crystals, from the aqueous sodium hydroxide solution of ...
Archana Mootha   +6 more
doaj   +1 more source

Optical control of DNA-base radio-sensitivity [PDF]

open access: yesJ. Chem. Phys. B 113, 6938 (2009), 2009
{\bf Purpose}: Manipulation of the radio-sensitivity of the nucleotide-base driven by the spin blockade mechanism of diffusive free radicals against ionizing radiation. {\bf Materials and methods}: We theoretically propose a mechanism which uses the simultaneous application of circularly polarized light and an external magnetic field to control the ...
arxiv  

Guanine tetraplex formation by short DNA fragments containing runs of guanine and cytosine

open access: yesBiophysical Journal, 1997
Using CD spectroscopy, guanine tetraplex formation was studied with short DNA fragments in which cytosine residues were systematically added to runs of guanine either at the 5' or 3' ends. Potassium cations induced the G-tetraplex more easily with fragments having the guanine run at the 5' end, which is just an opposite tendency to what was reported ...
M. Vorlicková, H. Penázová
openaire   +3 more sources

pH‐Directed Capture‐SELEX for Nanomolar Affinity Aptamers for Kanamycin Detection

open access: yesAnalysis &Sensing, EarlyView.
Considering the four pKa values of kanamycin A being all close to 7, two parallel SELEX experiments were carried out at pH 6 and 8. The pH 6 selection yielded a kanamycin aptamer with nanomolar affinity, which was used for fluorescent biosensor development.
Yichen Zhao, Juewen Liu
wiley   +1 more source

Histochemical indications for a chemically complex signal produced by the cervical gill slit gland of the pygmy sperm whale (Kogia breviceps)

open access: yesThe Anatomical Record, EarlyView.
Abstract The pygmy sperm whale (Kogia breviceps) possesses an exocrine gland associated with its false gill slit pigmentation pattern. The cervical gill slit gland is a compound tubuloalveolar gland that produces a holocrine secretion and displays maturational changes in size and secretory histology. While the morphology of the cervical gill slit gland
Tiffany F. Keenan   +13 more
wiley   +1 more source

Influence of Renal Function on Phosphoramide Mustard Exposure: A Nonlinear Mixed‐Effects Analysis

open access: yesThe Journal of Clinical Pharmacology, Volume 63, Issue 1, Page 135-142, January 2023., 2023
Abstract Phosphoramide mustard (PM) is the final cytotoxic metabolite formed from the parent compound cyclophosphamide through a complex metabolic pathway, primarily through hepatic metabolism. Little is known about the effect of renal elimination on the disposition of PM.
Mutaz M. Jaber   +5 more
wiley   +1 more source

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