Results 11 to 20 of about 65,160 (264)

DETERMINATION OF THE OCTANE NUMBER OF AUTOMOTIVE GASOLINES BY FTIR SPECTROMETRY WITH CHEMOMETRICS

Perner’s Contacts, 2022
The quality of motor fuels is more and more strictly controlled in connection with many factors - users are particularly interested in the anti-knock resistance of automotive gasolines, quantitatively expressed by the value of the research octane number (
Ivana Hurtová, Marie Sejkorová
doaj   +1 more source

The Detection of Substitution Adulteration of Paprika with Spent Paprika by the Application of Molecular Spectroscopy Tools

Foods, 2020
The spice paprika (Capsicum annuum and frutescens) is used in a wide variety of cooking methods as well as seasonings and sauces. The oil, paprika oleoresin, is a valuable product; however, once removed from paprika, the remaining spent product can be ...
Pamela Galvin-King, Simon A. Haughey, Christopher T. Elliott   +2 more
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New applications and insights using an old technique [PDF]

EPJ Web of Conferences
It has been almost 60 years since the first commercial high-resolution FTIR spectrometer was launched. In gas metrology, such FTIR spectrometers have traditionally been used for a few niche applications, but they have never become a real workhorse.
Persijn Stefan
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Estimation of the Number of Scans Required per Hard-to-Clean Location and Establishing the Limit of Quantification of a Partial Least Squares Calibration Model When the FTIR Is Used for Pharmaceutical Cleaning Verification

Molecules, 2022
This study aims to identify two critical components required for pharmaceutical cleaning verification when an FTIR is used: (a) the number of scans required per hard-to-clean location, and (b) the limit of quantification (LOQ) of the FTIR instrument when
Apu Sarwar, Conor McSweeney, Mark Smith, Eric Moore   +3 more
doaj   +1 more source

Development of a screening method for adulteration detection in coconut milk via mid-infrared spectroscopy: A study of linear and nonlinear regression method

Journal of Agriculture and Food Research, 2022
In the present study, we developed a screening method for detection of adulteration in coconut milk via mid-infrared spectroscopy. Linear and nonlinear regression methods (principal component regression (PCR), partial least squares regression (PLSR), and
Agustami Sitorus, Ramayanty Bulan
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Non-invasive identification of polymers in cultural heritage collections: evaluation, optimisation and application of portable FTIR (ATR and external reflectance) spectroscopy to three-dimensional polymer-based objects

Heritage Science, 2019
The conservation of polymer-based cultural heritage is a major concern for collecting institutions internationally. Collections include a range of different polymers, each with its own degradation processes and preservation needs, however, they are ...
Julianne Bell, Petronella Nel, Barbara Stuart   +2 more
doaj   +1 more source

Different Flotation Behaviors of Ca2+-Activated Quartz in the Presence of 18-Carbon Fatty Acids with Different Saturation

Kuangchan zonghe liyong, 2023
This is an essay in the field of mineral processing engineering. In this study, sodium palmitate, sodium oleate and sodium linoleate were applied as collectors for the flotation of Ca2+-activated quartz.
Liqun Peng, Runzhe Liu, Lan Lyu, Shu Fang, Ning Li, Lifen Liu   +5 more
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Evaluation of a Cost-Effective Ammonia Monitoring System for Continuous Real-Time Concentration Measurements in a Fattening Pig Barn

Sensors, 2019
Ammonia (NH3) emission is one of the major environmental issues in livestock farming. Gas measurements are required to study the emission process, to establish emission factors, and to assess the efficiency of emission reduction techniques.
Shaojie Zhuang, Philippe Van Overbeke, Jürgen Vangeyte, Bart Sonck, Peter Demeyer   +4 more
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Application of FTIR spectroscopy and chemometrics for correlation of antioxidant activities, phenolics and flavonoid contents of Indonesian Curcuma xanthorrhiza

International Journal of Food Properties, 2022
Curcuma xanthorrhiza is one of the most commonly used herbals found in Indonesian Traditional Medicine. This herb has been known as antioxidant. The phenolics and flavonoids are believed to be responsible for these activities. The objective of this study
Awal P. Kusumadewi, Ronny Martien, Suwidjiyo Pramono, Anita A. Setyawan, Anjar Windarsih, Abdul Rohman   +5 more
doaj   +1 more source

GRAFTING TEMBAGA(II) PADA SILIKA MODIFIKASI

Jurnal Riset Kimia, 2015
A copper(II) acetonitrile complex has been grafted on modified silica and characterized by Fouruer Transform Infra Red (FTIR) and Energy Dispersive X-ray (EDX).
Syukri -
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