Results 11 to 20 of about 73,155 (264)

Biodiesel and Bioplastic Production from Waste-Cooking-Oil Transesterification: An Environmentally Friendly Approach

Energies, 2022
Alternative sources of fuel have been a concern in the last few decades. The growth of urbanization and industrialization will lead to the exhaustion of fossil fuels, attracting studies on alternative routes.
Cristina Almeida da Silva, Raíssa Nunes dos Santos, Geiser Gabriel Oliveira, Talita Pereira de Souza Ferreira, Nelson Luis Gonçalves Dias de Souza, Aline Souza Soares, Joece Ferreira de Melo, Carla Jovania Gomes Colares, Ueric José Borges de Souza, Renisson Neponuceno de Araújo-Filho, Raimundo Wagner de Souza Aguiar, Gil Rodrigues dos Santos, Evgeni Evgeniev Gabev, Fabrício Souza Campos   +13 more
doaj   +1 more source

The Spectral Characteristics and Identification Techniques for Colorless and Near-colorless HPHT Synthetic Diamonds

Yankuang ceshi, 2016
Melee-sized colorless HPHT synthetic diamonds mixed with natural diamonds in jewellery have been reported by gem testing laboratory. It was noted that the differences of the fluorescence and phosphorescence between natural and synthetic diamonds are the ...
SONG Zhong-hua, LU Tai-jin, SU Jun, GAO Bo, TANG Shi, HU Ning, KE Jie, ZHANG Jun   +7 more
doaj   +1 more source

Determination of Sulfur in Different Types of Geochemical Samples by ICP-OES with Acid Dissolution and Combustion-Infrared Absorption Spectrometry

Yankuang ceshi, 2022
BACKGROUND Inductively coupled plasma-optical emission spectrometry (ICP-OES) and combustion-infrared absorption spectrometry are the most widely used methods to measure sulfur content in geological samples.
SHI Youchang, CHEN Guiren, ZHAO Mengsheng, LYU Zhenlong, YANG Jinguo   +4 more
doaj   +1 more source

Physicochemical Characterization of Biopolymer Chitosan Extracted from Shrimp Shells [PDF]

علوم و تکنولوژی پلیمر, 2015
Chitosan is a deacetylated derivative of chitin, which is a naturally abundant mucopolysaccharide, supporting the matter of crustaceans, insects, and fungi.
Nezamaddin Mengelizadeh, Nematollah Jafarzadeh Haghighifard, Afshin Takdastan, Mina Hormozinejad   +3 more
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Study on the Infrared Spectral Characteristics of H2OⅠ-type Emerald and the Controlling Factors

Yankuang ceshi, 2019
BACKGROUND The infrared absorption mechanism is mainly related to the Si-O lattice, channel structure water, other alkaline metal cations, and vibration of molecules.
QIAO Xin, ZHOU Zheng-yu, NONG Pei-zhen, LAI Meng, LI Ying-bo, GUO Kai-peng, ZHONG Qian, WANG Han, ZHOU Yan   +8 more
doaj   +1 more source

Identification of Synthetic Cannabinoid New Psychoactive Substances 4F-MDMB-BUTINACA and MDMB-4en-PINACA [PDF]

Fayixue Zazhi, 2021
Objective To establish a method that combines a series of techniques including Fourier transform infrared spectrum （FTIR）, gas chromatography-mass spectrometry （GC-MS）, high resolution mass spectrometry and nuclear magnetic resonance spectroscopy （NMR ...
WANG Kua-dou, YUAN Xiao-liang, ZHANG Yu-rong, et al.
doaj   +1 more source

Imputation of missing milk Fourier transform mid-infrared spectra using existing milk spectral databases: A strategy to improve the reliability of breeding values and predictive models

Journal of Dairy Science, 2023
: The use of milk Fourier transform mid-infrared (FT-MIR) spectrometry to develop management and breeding tools for dairy farmers and industry is growing and supported by the availability of numerous new predicted phenotypes to assess the nutritional ...
H. Soyeurt, X.-L. Wu, C. Grelet, M.L. van Pelt, N. Gengler, F. Dehareng, C. Bertozzi, J. Burchard   +7 more
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Bubble Identification in On-Line Determination of High Concentration Heavy Water via IR

He huaxue yu fangshe huaxue
High concentration heavy water is used as moderator and coolant in a reactor, and its concentration closely related to the safety and performance of the reactor.
Yan LIU, Chao WU, Ying REN, Bin-yong ZHANG, Yu-fei WANG   +4 more
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Studying optical characteristics of aviation fuels samples stored under various conditions

Semiconductor Physics, Quantum Electronics & Optoelectronics, 2020
In this work the SPR method has been investigated. And it has been shown that this SPR method is the simple and reliable approach to study the quality of aviation kerosenes. The device “Plasmon-71” developed at the V.
O.V. Andrieiev, V.B. Lupkin, M.N. Zhurybeda, V.P. Maslov, V.J. Larin, V.O. Morozhenko, G.V. Dorozinsk, N.V. Kachur, H.V. Dorozinska, A.V. Turovska   +9 more
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Is it possible to predict milk processing into butter using infrared spectroscopy?

Biotechnologie, Agronomie, Société et Environnement, 2021
Description of the subject. Given the current low price of milk, a lot of producers have decided to process their milk into products with a higher added-value, including butter. However, all milks are not suitable to be transformed into butter.
Émilie Lefébure, Thibault Troch, Younés Noutfia, Frédéric Colinet, Amaury Gérard, Frédéric Dehareng, Vincent Baeten, Nicolas Gengler, Marianne Sindic   +8 more
doaj   +1 more source