Results 41 to 50 of about 664,376 (346)

Mineralogical Characteristics and Colouration Mechanism of Blue Opals from Peru

Yankuang ceshi, 2017
In recent years, the study of blue opal has been limited to the mineral composition and coloration mechanism. However, the chemical composition, infrared spectrum, and Raman spectrum of the blue opal have not been studied in details.
XING Ying-ying, QI Li-jian, WANG Hai-tao
doaj   +1 more source

Insights into Sulfhemoglobin Detection: UV-Vis and Fluorescence Spectroscopy Correlations

Journal of Chemistry, 2023
The mechanisms by which drugs and several sulfur chemicals induce sulfhemoglobin formation have not yet been elucidated. However, enzymes producing hydrogen sulfide in mammalian tissues and organs suggest sulfhemoglobin and sulfmyoglobin formation ...
Lysmarie Santos-Velázquez, Juan López-Garriga   +1 more
doaj   +1 more source

Highly Crystalline MIL-100 (Fe) Nanoparticles Prepared from Ferrous Salts and Applications in Photodegradation of Organic Dyes

Cailiao gongcheng, 2018
In order to prepare highly crystalline and stable metal-organic frameworks (MOFs) nanoparticles in a straightforward and low cost method, trimesic acid was depronated by three equivalent NaOH in water, and mixed with ferrous salts (e.g. FeCl2 and Fe(OAc))
LIU Xiang-yue, ZHANG Yu, WANG Chen, MAO Hui-ling, DU Xuan, CHENG Hu, ZHUANG Jin-liang   +6 more
doaj   +1 more source

Stormwater monitoring using on-line UV-Vis spectroscopy

Environmental Science and Pollution Research, 2021
Stormwater runoff contains a myriad of pollutants, including faecal microbes, and can pose a threat to urban water supplies, impacting both economic development and public health. Therefore, it is a necessity to implement a real-time hazard detection system that can collect a substantial amount of data, assisting water authorities to develop preventive
Jianyin Huang, Christopher W. K. Chow, Zhining Shi, Rolando Fabris, Amanda Mussared, Gary Hallas, Paul Monis, Bo Jin, Christopher P. Saint   +8 more
openaire   +4 more sources

In Situ Water Quality Monitoring Using an Optical Multiparameter Sensor Probe

Sensors, 2023
Optical methods such as ultraviolet/visible (UV/Vis) and fluorescence spectroscopy are well-established analytical techniques for in situ water quality monitoring.
Tobias Goblirsch, Thomas Mayer, Stefanie Penzel, Mathias Rudolph, Helko Borsdorf   +4 more
doaj   +1 more source

Studi Penggunaan Uv-vis Spectroscopy Dan Kemometrika Untuk Mengidentifikasi Pemalsuan Kopi Arabika Dan Robusta Secara Cepat [PDF]

, 2017
There are two popular coffees in Indonesia, namely Arabica and Robusta coffees. Arabica coffee has a better quality than Robusta do. This research aimed to identify the purity of Arabica coffee; and Robusta as mixture ingredient, by using technology of ...
Iriani, R. (Riri), Sugianti, C. (Cicih), Suhandy, D. (Diding), Waluyo, S. (Sri), Yulia, M. (Meinilwita)   +4 more
core  

Insights into the Activity and Deactivation of the Methanol-to-Olefins Process over Different Small-Pore Zeolites As Studied with Operando UV–vis Spectroscopy

ACS Catalysis, 2017
The nature and evolution of the hydrocarbon pool (HP) species during the Methanol-to-Olefins (MTO) process for three small-pore zeolite catalysts, with a different framework consisting of large cages interconnected by small eight-ring windows (CHA, DDR ...
J. Goetze, F. Meirer, I. Yarulina, J. Gascón, F. Kapteijn, J. Ruiz‐Martinez, B. Weckhuysen   +6 more
semanticscholar   +1 more source

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Synthesis, characterization and photocatalytic activity of Mn2O3/Al2O3/Fe2O3 nanocomposite for degradation of malachite green

Bulletin of the Chemical Society of Ethiopia, 2018
A Mn2O3/Al2O3/Fe2O3 nanocomposite photocatalyst was prepared by a co-precipitation method. Flame atomic absorption spectroscopy (FAAS), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscope (SEM), and UV ...
N. R. Habib, A. M. Taddesse, A. Temesgen
doaj   +1 more source

ABA triblock copolymers: from controlled synthesis to controlled function [PDF]

, 2003
The ABA amphiphilic block copolymers, poly(hydroxyethyl methacrylate-hlock-methylphenylsilane-block-hydroxyethyl methacrylate) (PHEMA-PMPS-PHEMA) and poly[oligo(ethylene glycol) methyl ether methacrylate-block-methylphenylsilane-block-oligo(ethylene ...
Allen, Asuke, Asuke, Beers, Brustolin, Bukalov, Caruso, Chen, Chert-Tsun Yeoh, Coessens, Davis, de Boer, Demoustier-Champagne, Demoustier-Champagne, Demoustier-Champagne, Discher, Discher, Fasolka, Fossum, Fossum, Geraldine G. Durand, Haddleton, Haddleton, Hamley, Holder, Jenekhe, Jenekhe, Jones, Jones, Jones, Kakizawa, Karatsu, Kataoka, Kros, Liu, Lodge, Lutsen, Mark J. Boerakker, Matyjaszewski, Michl, Miller, Miller, Nicholas A. A. Rossi, Nico A. J. M. Sommerdijk, Popescu, Riegel, Robinson, Rossi, Russell, Sakamoto, Sanji, Sanji, Sanji, Sanji, Sanji, Sanji, Sanji, Schwegler, Simon J. Holder, Sommerdijk, Stalmach, Steinmetz, Szwarc, van Hutten, Wang, Wang, Wang, Wang, Widawski, Xie, Zhang, Zhang   +71 more
core   +2 more sources