Results 31 to 40 of about 222,063 (100)

Theory predicts UV/vis-to-IR photonic down conversion mediated by excited state vibrational polaritons

Nature Communications, 2023
This work proposes a photophysical phenomenon whereby ultraviolet/visible (UV/vis) excitation of a molecule involving a Franck-Condon (FC) active vibration yields infrared (IR) emission by strong coupling to an optical cavity.
Connor K. Terry Weatherly, Justin Provazza, Emily A. Weiss, Roel Tempelaar   +3 more
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C₆₀ Fullerene as an Effective Nanoplatform of Alkaloid Berberine Delivery into Leukemic Cells

Pharmaceutics, 2019
A herbal alkaloid Berberine (Ber), used for centuries in Ayurvedic, Chinese, Middle-Eastern, and native American folk medicines, is nowadays proved to function as a safe anticancer agent.
Anna Grebinyk, Svitlana Prylutska, Anatoliy Buchelnikov, Nina Tverdokhleb, Sergii Grebinyk, Maxim Evstigneev, Olga Matyshevska, Vsevolod Cherepanov, Yuriy Prylutskyy, Valeriy Yashchuk, Anton Naumovets, Uwe Ritter, Thomas Dandekar, Marcus Frohme   +13 more
doaj   +1 more source

LÁSER de Xe NEUTRO y MULTI-IÓNICO UV – VIS – IR

Anales (Asociación Física Argentina), 2004
El láser de Xe pulsado, ha sido perfeccionado en el tiempo y es hoy un emisor de radiación estimulada en numerosas transiciones que cubren el rango de 220 a 2200 nm.
M. Gallardo, M. Raineri, M. Giulani, C. Lagorio, S. Padilla, J. Reyna Almandos   +5 more
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Tautomerism and switching in 7-hydroxy-8-(azophenyl)quinoline and similar compounds

Beilstein Journal of Organic Chemistry
Tautomerism in two new azo dyes, based on 7-hydroxyquinoline, has been considered from the viewpoint of the proton crane concept. Although 8-(phenyldiazenyl)quinolin-7-ol exists in solution as a mixture of azo and two hydrazone tautomers, as shown by the
Lidia Zaharieva, Vera Deneva, Fadhil S. Kamounah, Nikolay Vassilev, Ivan Angelov, Michael Pittelkow, Liudmil Antonov   +6 more
doaj   +1 more source

Photodegradation Pathways of Typical Phthalic Acid Esters Under UV, UV/TiO2, and UV-Vis/Bi2WO6 Systems

Frontiers in Chemistry, 2019
Photolysis and photocatalysis of typical phthalic acid esters (dimethyl phthalate, DMP; diethyl phthalate, DEP; dibutyl phthalate, DBP) were carried out in UV, UV/TiO2, and UV-Vis/Bi2WO6 systems.
Chunying Wang, Ting Zeng, Chuantao Gu, Chuantao Gu, Sipin Zhu, Qingqing Zhang, Xianping Luo   +6 more
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Color and Near‐Infrared Reflectance Covary in Distinct Ways Across Taxa

Ecology and Evolution
Solar radiation reaching Earth spans 300–2500 nm, covering ultraviolet (UV), visible (Vis), and near‐infrared (NIR) wavelengths. Its reflectance is critical for animal signaling, camouflage, and thermoregulation, likely leading to selective trade‐offs ...
Jonathan Goldenberg, Jessica L. Dobson, Gerben Debruyn, Michaël P. J. Nicolaï, Svana Rogalla, Bram Vanthournout, Federico Massetti, Susana Clusella‐Trullas, Diederik Strubbe, Katrien De Wolf, Dries Bonte, Bastiaan Star, Matthew D. Shawkey, Liliana D'Alba   +13 more
doaj   +1 more source

Luwak Coffee Classification Using UV-Vis Spectroscopy Data: Comparison of Linear Discriminant Analysis and Support Vector Machine Methods

Aceh International Journal of Science and Technology, 2018
UV-Vis spectroscopy has been used as a promising method for coffee quality evaluation including in authentication of several high-economic coffee types.
Diding Suhandy, Meinilwita Yulia
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Adjusting UV‐Vis Spectrum of Alizarin by Insertion of Auxochromes

ChemistryOpen
First synthesized in 1868, alizarin became one of the first synthetic dyes and was widely used as a red dye in the textile industry, making it more affordable and readily available than the traditional red dyes derived from natural sources.
Zahra Noori, Dr. Ibério deP. R. Moreira, Prof. Dr. Josep Maria Bofill, Prof. Dr. Jordi Poater   +3 more
doaj   +1 more source

Spectrophotometer standardization in UV-Vis spectral region

Journal of Measurement Science and Instrumentation, 2016
Ultraviolet-visible（UV-Vis）spectrophotometry is commonly used in analytical laboratories for qualitative and quantitative analyses.To make the data obtained reliable,an experimental instrument must be calibrated.National Institute for Standards（NIS）in ...
Alaa-Eldin A Abd-Elmageed, Essam M Elmoghazy, Fatma Elsharkawy   +2 more
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REFLECTANCE UV-VIS AND UV RESONANCE RAMAN SPECTROSCOPY IN CHARACTERIZATION OF KRAFT PULPS

BioResources, 2009
Reflectance UV-Vis spectroscopy and UV resonance Raman (UVRR) spectroscopy are both nondestructive techniques that are applicable to study trace concentrations of lignin in-situ.
Anni Lähdetie, Tiina Liitiä, Tarja Tamminen, Anna-Stiina Jääskeläinen   +3 more
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