Results 61 to 70 of about 332,106 (256)

How Chemometrics Revives the UV-Vis Spectroscopy Applications as an Analytical Sensor for Spectralprint (Nontargeted) Analysis

Chemosensors, 2022
In recent years, methodologies based on spectral analysis, using ultraviolet–visible (UV-Vis) radiation, have experienced an amazing development and have been widely applied in various fields such as agricultural, food, pharmaceutical, and environmental ...
Rocío Ríos-Reina, Silvana M. Azcarate
doaj   +1 more source

Novel Tailoring of Ternary ZnS‐MXene‐TiO2 Nanocomposite Heterojunction and Its Tunable Electrochemical Properties With Enhanced Photocatalytic Degradation

Advanced Engineering Materials, EarlyView.
ZnS‐MXene‐TiO2 nanocomposite heterojunction for photocatalytic decomposition of this methylene blue dye (MB) greatly improves light absorption, charge separation, and active site area. Two‐dimensional MXene forms nanocomposites by easily combining them with 0D (quantum dots), 1D (tube and wire), 2D (plane and sheet), and 3D (particle and lamellar ...
Latiful Kabir, Dohyun Kim, Minho Song, Jae Doc Na, Young Jun Joo, Kwang Youn Cho, Karna Wijaya, Won‐Chun Oh   +7 more
wiley   +1 more source

Spectroscopic and first-principles calculation studies of the chemical forms of palladium ion in nitric acid solution for development of disposal of high-level radioactive nuclear wastes

AIP Advances, 2018
We have investigated the chemical forms of palladium (Pd) ion in nitric acid solution, using XAFS/UV-vis spectroscopic and first-principles methods in order to develop the disposal of high-level radioactive nuclear liquid wastes (HLLW: radioactive metal ...
Shinta Watanabe, Toshikazu Sato, Tomoko Yoshida, Masato Nakaya, Masahito Yoshino, Takanori Nagasaki, Yusuke Inaba, Kenji Takeshita, Jun Onoe   +8 more
doaj   +1 more source

Non-Destructive Classification of Fruits Based on Vis-nir Spectroscopy and Principal Component Analysis

Jurnal Biodjati, 2019
Fruits are one of the sources of nutrition needed for health. Fruit quality is generally assessed by physical and chemical properties. Measurement of fruit internal quality is usually done by destructive techniques. Ultraviolet, visible and near-infrared
Kusumiyati Kusumiyati, Yuda Hadiwijaya, Ine Elisa Putri   +2 more
doaj   +1 more source

Enhancing STEM Education by Integrating Research and Teaching in Photochemistry: An Undergraduate Chemistry Laboratory in Spectroscopy and Photochemistry

Education Sciences, 2022
Molecular spectroscopy and photochemistry constitute an integral field in modern chemistry. However, undergraduate level classes provide limited opportunities for hands-on experimentation of photochemistry and photophysics.
Eleanor J. Stelz-Sullivan, Jared M. Racca, Julia C. McCoy, Dana L. Charif, Lajmi Islam, Xiao-Dong Zhou, Barbara Marchetti, Tolga N. V. Karsili   +7 more
doaj   +1 more source

STUDIES ON PLANT BILE PIGMENTS. [PDF]

, 1982
The (4 Z, 10 2, 15Ej-2,3-dihydrobilindione 4, along with the fully unsaturated (E, 2, Z)-analogue 8, has been prepared from the corresponding (Z, Z, Z)-isomer by a variation of Falk's method (Falk et ul., 1980).
Cmiel, Edmund, Kufer, Werner, Rüdiger, W., Scheer, Hugo, Schneider, Siegfried, Thümmler, F.   +5 more
core  

Characterization and digital restauration of XIV-XV centuries written parchments by means of non-destructive techniques. Three case studies [PDF]

, 2018
Parchment is the primary writing medium of the majority of documents with cultural importance. Unfortunately, this material suffers of several mechanisms of degradation that affect its chemical-physical structure and the readability of text.
Pronti, L., Perino, Michela, Cursi, M., Santarelli, M. L., Felici, A. C., Bracciale, M. P.   +5 more
core   +3 more sources

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

Advanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff, Finn‐Lennard Janthur, Sascha Zimmermann, Sarah Seffer, Jörg Hermsdorf, René Gustus, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Christian Klose   +9 more
wiley   +1 more source

High Fluorescent Porphyrin-PAMAM-Fluorene Dendrimers

Molecules, 2015
Two new classes of dendrimers bearing 8 and 32 fluorene donor groups have been synthesized. The first and second generations of these porphyrin-PAMAM-fluorene dendrimers were characterized by 1H-NMR, 13C-NMR, FTIR, UV-vis spectroscopy, elemental analyses
Karla I. Garfias-Gonzalez, Ulises Organista-Mateos, Andrés Borja-Miranda, Virginia Gomez-Vidales, Simon Hernandez-Ortega, Sandra Cortez-Maya, Marcos Martínez-García   +6 more
doaj   +1 more source

Photocatalytic Degradation of Anti-inflammatory Drug on Ti Doped BaBiO3 Nanocatalyst under Visible Light Irradiation [PDF]

Iranica Journal of Energy and Environment, 2016
Nanosized perovskites BaBiO3 and BaBi4Ti4O15 were prepared using Pechini method. These structures were confirmed through thermogravimetric analysis (TGA), X-ray diffraction (XRD), UV-Vis diffusion reflection spectroscopy (UV-Vis DRS), Fourier transform ...
S. Jain, K, Sharma, U. Chandrawat
doaj   +1 more source