Results 11 to 20 of about 375,783 (265)

Spectral Study of Some Pharmaceuticals and Cosmetics [PDF]

Engineering and Technology Journal, 2015
The current study deals with hazards and safety precautions of some pharmaceutical and cosmetic creams used extensively in Iraq. UV absorption - related diseases of these products and people unawareness of side effects and the weak quality control are ...
Abdulhadi Kadhim, Leiqaa A.Hameed, Raid S.Jawad   +2 more
doaj   +1 more source

Rational design and performance prediction of organic photosensitizer based on TATA+ dye for hydrogen production by photocatalytic decomposition of water

Frontiers in Chemistry, 2023
In comparison to metal complexes, organic photosensitive dyes employed in photocatalytic hydrogen production exhibit promising developmental prospects. Utilizing the organic dye molecule TA+0 as the foundational structure, a series of innovative organic ...
Yuening Yu, Zhenqing Yang, Yuhong Xia, Yuzhuo Lv, Wansong Zhang, Chundan Lin, Changjin Shao   +6 more
doaj   +1 more source

Influence of overlapping between the fluorescence spectra of dye molecules and the spectrum of plasmon absorption of silver nanoparticles on the luminescence of laser dyes in ethyl alcohol

Eurasian Journal of Physics and Functional Materials, 2021
In the present work, the influence of the degree of overlapping between the plasmon absorption spectrum of silver nanoparticles and the luminescence spectra of P6Zh, phenalamine 160, and oxazine 17 on their luminescence was studied.
A. K. Aimukhanov, N. Kh. Ibrayev
doaj   +1 more source

Rapid Identification of Extra Virgin Olive Oil by Spectrometry

Shipin gongye ke-ji, 2023
In this paper, the spectral characteristics of extra virgin olive oil mixed with different proportions of olive oil (refined olive oil), rapeseed oil, corn oil and soybean oil were investigated.
Cong TANG, Shijun SHAO, Yujie WEN, Qing LIANG, Shuqing DONG   +4 more
doaj   +1 more source

Spectral Characteristic, Storage Stability and Antioxidant Properties of Anthocyanin Extracts from Flowers of Butterfly Pea (Clitoria ternatea L.)

Molecules, 2021
Anthocyanins from flowers of the butterfly pea (Clitoria ternatea L.) are promising edible blue food colorants. Food processing often faces extreme pHs and temperatures, which greatly affects the color and nutritional values of anthocyanins.
Xueying Fu, Qiang Wu, Jian Wang, Yanli Chen, Guopeng Zhu, Zhixin Zhu   +5 more
doaj   +1 more source

Theoretical Study on Electronic, Magnetic and Optical Properties of Non-Metal Atoms Adsorbed onto Germanium Carbide

Nanomaterials, 2022
Nine kinds of non-metal atoms adsorbed into germanium carbide (NM-GeC) systems wereare investigated by first-principles calculations. The results show that the most stable adsorption positions vary with the NM atoms, and C-GeC exhibits the strongest ...
Lin Zhang, Zhen Cui
doaj   +1 more source

Pseudo-Continuous Flow FTIR System for Glucose, Fructose and Sucrose Identification in Mid-IR Range

Micromachines, 2018
In this paper, we present a new FTIR-based microfluidic system for Glucose, Fructose and Sucrose detection. The proposed microfluidic system is based on a pseudo-continuous flow coupled to a microscope-FTIR instrument.
Hamza Landari, Mourad Roudjane, Younès Messaddeq, Amine Miled   +3 more
doaj   +1 more source

Simulating Absorption Spectra of Flavonoids in Aqueous Solution: A Polarizable QM/MM Study

Molecules, 2020
We present a detailed computational study of the UV/Vis spectra of four relevant flavonoids in aqueous solution, namely luteolin, kaempferol, quercetin, and myricetin.
Sulejman Skoko, Matteo Ambrosetti, Tommaso Giovannini, Chiara Cappelli   +3 more
doaj   +1 more source

Ultra-Sensitive Si-Based Optical Sensor for Nanoparticle-Size Traditional Water Pollutant Detection

Photonics, 2022
A low-cost Si-based optical nano-sensor that monitors traditional water pollutants is introduced in this paper. The introduced sensor works in the near-infrared region, 900 nm to 2500 nm spectral range.
Ahmed Emara, Amr Yousef, Khaled Elleithy
doaj   +1 more source

Gaussian Decomposition vs. Semiclassical Quantum Simulation: Obtaining the High-Order Derivatives of a Spectrum in the Case of Photosynthetic Pigment Optical Properties Studying

Sensors, 2023
In this paper, a procedure for obtaining undistorted high derivatives (up to the eighth order) of the optical absorption spectra of biomolecule pigments has been developed.
Andrei P. Razjivin, Vladimir S. Kozlovsky, Aleksandr A. Ashikhmin, Roman Y. Pishchalnikov   +3 more
doaj   +1 more source