Results 11 to 20 of about 556,407 (206)

Enhanced characterization of SO₂ plume height and column density using the second UV spectral band of TROPOMI [PDF]

Atmospheric Measurement Techniques
Volcanic emissions of sulfur dioxide (SO2) affect the environment, climate, and society. Their detection and quantification rely extensively on remote sensing techniques, which are used to track SO2 and monitor volcanic activity worldwide. In particular,
L. Fabris, L. Fabris, N. Theys, L. Clarisse, B. Franco, J. Vlietinck, H. Yu, H. Brenot, T. Danckaert, P. Hedelt, M. Van Roozendael   +10 more
doaj   +1 more source

The VIS detector system of SOXS [PDF]

, 2018
SOXS will be a unique spectroscopic facility for the ESO NTT telescope able to cover the optical and NIR bands thanks to two different arms: the UV-VIS (350-850 nm), and the NIR (800-1800 nm). In this article, we describe the design of the visible camera
Achrén, Jani, Aliverti, Matteo, Araiza-durán, José Antonio, Arcavi, Iair, Baruffolo, Andrea, Ben-ami, Sagi, Bianco, Andrea, Biondi, Federico, Brucalassi, Anna, Campana, Sergio, Capasso, Giulio, Cappellaro, Enrico, Claudi, Riccardo U., Colapietro, Mirko, Cosentino, Rosario, D'alessio, Francesco, D'avanzo, Paolo, D'orsi, Sergio, Della Valle, Massimo, Diner, Oz, Evans, Christopher J., Fantinel, Daniela, Fynbo, Johan, Gal-yam, Avishay, Genoni, Matteo, Hirvonen, Mika, Ives, Derek, Kotilainen, Jari, Kumar, Tarun, Kuncarayakti, Hanindyo, Landoni, Marco, Lehti, Jussi, Li Causi, Gianluca, Marafatto, Luca, Mattila, Seppo, Mehrgan, Leander H., Munari, Matteo, Pariani, Giorgio, Pignata, Giuliano, Rappaport, Michael, Ricci, Davide, Riva, Marco, Rubin, Adam, Salasnich, Bernardo, Schipani, Pietro, Scuderi, Salvatore, Simard, Luc, Smartt, Stephen, Takami, Hideki, Turatto, Massimo, Vitali, Fabrizio, Zánmar Sánchez, Ricardo   +51 more
core   +2 more sources

Water Soluble Cationic Porphyrin Sensor for Detection of Hg2+, Pb2+, Cd2+, and Cu2+ [PDF]

, 2016
Here we report the sensing properties of the aqueous solution of mesotetra(N-methyl-4-pyridyl)porphine tetrachloride (1) for simultaneous detection of toxic metal ions by using UV-vis spectroscopy.
Orr, Christopher, Uherek, Miranda, Zamadar, Matibur   +2 more
core   +4 more sources

ANALISA FLAVONOID DARI EKSTRAK ETANOL 96% KULIT BUAH OKRA MERAH (Abelmoschus esculentus L. Moench) SECARA KROMATOGRAFI LAPIS TIPIS DAN SPEKTROFOTOMETRI UV-VIS

JIIS: Jurnal Ilmiah Ibnu Sina, 2016
Telah dilakukan penelitian tentang Analisa Flavonoid dari Ekstrak Etanol 96% Kulit Buah Okra Merah Secara Kromatografi Lapis Tipis dan Spektrofotometer UV-Vis.
Nia Lisnawati, Indri Astuti Handayani, Ni'matul Fajrianti   +2 more
doaj   +3 more sources

Machine learning prediction of UV–Vis spectra features of organic compounds related to photoreactive potential

Scientific Reports, 2021
Machine learning (ML) algorithms were explored for the classification of the UV–Vis absorption spectrum of organic molecules based on molecular descriptors and fingerprints generated from 2D chemical structures.
Rafael Mamede, Florbela Pereira, João Aires-de-Sousa   +2 more
doaj   +1 more source

Classification of Makasar Fruit Extract (Brucea javanica L. Merr.) Based on The Level of Ripeness Using a Combination of FTIR and UV-Vis Spectroscopy with Chemometrics

Jurnal Kimia Sains dan Aplikasi, 2023
Makasar fruit (Brucea javanica L. Merr) is a medicinal plant frequently utilized in Indonesia for its anti-malarial, anti-diabetic, antioxidant, and antibacterial properties. This research aims to classify extracts from B.
Charles Banon, Deni Agus Triawan, Morina Adfa, Monica Santa Ana Sihite, Ria Nurwidiyani, Widia Rahmi   +5 more
doaj   +1 more source

Estratégias para aumento de sensibilidade em espectrofotometria UV-VIS Strategies to increase sensitivity in UV-VIS spectrophotometry

Química Nova, 2004
Spectrophotometry is one of the most widespread analytical techniques due to its simplicity, reliability, and low-cost instrumentation for both direct measurements and coupled to other techniques or processes such as chromatography, electrophoresis and ...
Fábio R. P. Rocha, Leonardo S. G. Teixeira   +1 more
doaj   +1 more source

Thermodynamic characterisation of triazol ylimino-DNA interaction by UV–Vis spectroscopy

Journal of Photochemistry and Photobiology, 2020
To efficiently design improved therapeutic agent, study of molecule-DNA interaction is a crucial step. In our previous study, we investigated comprehensive mechanism of some 1,2,4 triazol-4-ylimino derivatives, and they exhibited excellent in vitro anti ...
Rafia Nimal, Afzal Shah, Muhammad Saddiq
doaj   +1 more source

Data Fusion of UV-Vis and FTIR Spectra Combined with Principal Component Analysis for Distinguishing of Andrographis paniculata Extracts Based on Cultivation Ages and Solvent Extraction

Indonesian Journal of Chemistry, 2021
Andrographis paniculata is one of the medicinal plants used for the treatment of antidiabetic. Cultivation ages and solvent extraction affected metabolites' composition and concentration that directly cause the plant's efficacies.
Antonio Kautsar, Wulan Tri Wahyuni, Utami Dyah Syafitri, Syifa Muflihah, Nursifa Mawadah, Eti Rohaeti, Zulhan Arif, Bambang Prajogo, Muhammad Bachri Amran, Abdul Rohman, Mohamad Rafi   +10 more
doaj   +1 more source

Diclofenac analysis in natural waters using UV-visible absorption spectrometric method

Macedonian Journal of Chemistry and Chemical Engineering, 2023
In this work, we developed an UV-visible (UV-VIS) absorption spectrometric method for the quantification of sodium diclofenac in natural waters. Several UV-VIS absorption method parameters were optimized.
Jean-Marie Bakhoum, Olivier Mbaye, Jean-Pierre Bakhoum, Mame Diabou Gaye-Seye, Clément Trellu, Coly Atanasse, Jean-Jacques Aaron   +6 more
doaj   +1 more source