Results 101 to 110 of about 667,586 (301)

Abundance studies of sdB stars using UV echelle HST/STIS spectroscopy

, 2006
Aims: We test the hypothesis that the pulsations in sdB stars are correlated with the surface abundances of iron-group elements. Any correlation might explain why, when given two spectroscopically similar stars, one will pulsate while the other will not.
Baschek, Baschek, Behara, Charpinet, Charpinet, Charpinet, Chayer, Edelmann, Edelmann, Edlén, Grevesse, Han, Heber, Heber, Heber, Heber, Heber, Heber, Kilkenny, Kilkenny, Koen, Koen, Lamontagne, Lamontagne, Maxted, Morton, Morton, O'Toole, O'Toole, O'Toole, Przybilla, Quirion, Raassen, S. J. O'Toole, Saffer, U. Heber, Unglaub, Uylings   +37 more
core   +1 more source

Green Synthesis of Gold and Silver Nanoparticles Using Averrhoa bilimbi Fruit Extract

Journal of Nanotechnology, 2013
We report on rapid one-step green synthesis of gold and silver nanoparticles using fruit extract of Averrhoa bilimbi Linn. UV-Vis absorption spectroscopy was used to monitor the quantitative formation of gold and silver nanoparticles. The characteristics
R. S. Rimal Isaac, G. Sakthivel, Ch. Murthy   +2 more
doaj   +1 more source

Enhancing Optoelectronic Properties in Phthalocyanine‐Based SURMOFs: Synthesis of ABAB Linkers by Avoiding Statistical Condensation with Tailored Building Blocks

Advanced Functional Materials, EarlyView.
A novel phthalocyanine (PC)‐based metal–organic framework (MOFs) is synthesized using ditopic PC linkers obtained through regioselective statistical condensation. The resulting MOF exhibits significant improvements in electronic absorption, thereby enhancing the material's performance in light harvesting and energy conversion.
Lukas S. Langer, Mareen Stahlberger, Xiaojing Liu, Yi Luo, Niklas E. Häußermann, Puja Singhvi, Yidong Liu, Olaf Fuhr, Martin Nieger, Lars Heinke, Thomas Heine, Christof Wöll, Stefan Bräse   +12 more
wiley   +1 more source

Sub-20-fs UV–XUV Beamline for Ultrafast Molecular Pump-Probe Spectroscopy [PDF]

EPJ Web of Conferences
The experimental investigation of chemically and biologically relevant dynamics induced by visible or ultraviolet (UV) light requires high temporal resolution and spectroscopic techniques capable of resolving the complexity of these processes.
Severino Stefano, Mai Lorenzo, Crego Aurora, Medeghini Fabio, Vismarra Federico, Frassetto Fabio, Poletto Luca, Lucchini Matteo, Reduzzi Maurizio, Nisoli Mauro, Borrego-Varillas Rocío   +10 more
doaj   +1 more source

Photoswitchable Conductive Metal–Organic Frameworks

Advanced Functional Materials, EarlyView.
A conductive material where the conductivity can be modulated remotely by irradiation with light is presented. It is based on films of conductive metal–organic framework type Cu3(HHTP)2 with embedded photochromic molecules such as azobenzene, diarylethene, spiropyran, and hexaarylbiimidazole in the pores.
Yidong Liu, Mersad Mostaghimi, Abhinav Chandresh, Saibal Jana, Wolfgang Wenzel, Lars Heinke   +5 more
wiley   +1 more source

Ensuring hemodialysis adequacy by dialysis dose monitoring with UV spectroscopy analysis of spent dialyzate. [PDF]

Int J Artif Organs, 2022
Zhang L, Liu W, Hao C, He Y, Tao Y, Sun S, Jakob M, Marcelli D, Barth C, Chen X.   +9 more
europepmc   +1 more source

POLYEXTRACTION OF HERBS OF ECHINACEA BY SYSTEMS OF EXTRACENTS WITH RISING POLARITY

Разработка и регистрация лекарственных средств, 2019
The process of extracting the Echinacea herbs (Echinacea Moench) has been developed with a series of water-alcohol solutions with an alcohol concentration of 70%, 40%, 20%. Extraction was carried out in the vacuum boiling mode with periodic pulsations of
V. A. Vainshtein, I. E. Kauhova, P. S. Amelina, Yu. A. Koldashova, S. A. Minina, A. V. Ivanova   +5 more
doaj  

Solvent-driven stability: UV spectroscopy study of phenolic substances

International Journal of Secondary Metabolite
In contemporary industry, the analysis of various substances often requires handling samples with appropriate solvents, relying on stock solutions for research purposes.
Annegowda Hardur Venkatappa, Manoj Madanahalli Ramesh, Richard Lobo   +2 more
doaj   +1 more source

Intermolecular Interactions as Driving Force of Increasing Multiphoton Absorption in a Perylene Diimide‐Based Coordination Polymer

Advanced Functional Materials, EarlyView.
This study uncovers the unexplored role of intermolecular interactions in multiphoton absorption in coordination polymers. By analyzing [Zn2tpda(DMA)2(DMF)0.3], it shows how the electronic coupling of the chromophores and confinement in the MOF enhance two‐and three‐photon absorption.
Simon Nicolas Deger, Anna Mauri, Yang Cui, Sebastian Josef Weishäupl, Ali Deniz Özdemir, Hamad Syed, Aleksandr Ovsianikov, Wolfgang Wenzel, Alexander Pöthig, Jürgen Hauer, Mariana Kozlowska, Roland Augustinus Fischer   +11 more
wiley   +1 more source

Formulation and development of Serratiopeptidase enteric coated tablets and analytical method validation by UV Spectroscopy. [PDF]

Int J Anal Chem, 2021
Panthi VK, Jha SK, Chaubey R, Pangeni R.
europepmc   +1 more source