Results 1 to 10 of about 65,160 (264)

Discrepancies in degree of conversion measurements by FTIR

Brazilian Oral Research, 2014
The purpose of this study was to evaluate the influence of the internal standard peak on the measured degree of conversion (DC) for methacrylate-based resins analyzed by Fourier-transform infrared spectroscopy (FTIR).
Fabrício Mezzomo Collares, Fernando Freitas Portella, Vicente Castelo Branco Leitune, Susana Maria Werner Samuel   +3 more
doaj   +5 more sources

Simultaneous SANS/FTIR measurement system incorporating the ATR sampling method. [PDF]

J Appl Crystallogr, 2023
Kaneko F, Radulescu A, Nakagawa H.
europepmc   +2 more sources

Formaldehyde total column densities over Mexico City: comparison between multi-axis differential optical absorption spectroscopy and solar-absorption Fourier transform infrared measurements [PDF]

Atmospheric Measurement Techniques, 2021
Formaldehyde (HCHO) total column densities over the Mexico City metropolitan area (MCMA) were retrieved using two independent measurement techniques: multi-axis differential optical absorption spectroscopy (MAX-DOAS) and Fourier transform infrared (FTIR)
C. Rivera Cárdenas, C. Guarín, C. Guarín, W. Stremme, M. M. Friedrich, M. M. Friedrich, A. Bezanilla, D. Rivera Ramos, C. A. Mendoza-Rodríguez, M. Grutter, T. Blumenstock, F. Hase   +11 more
doaj   +1 more source

Identifying pharmaceutical manufacturing equipment's surface roughness and mitigating robustness concerns when using specular reflectance Fourier-transform infrared (FTIR) spectroscopy for rapid cleaning verification

Talanta Open, 2022
Preventing cross-contamination during manufacturing is a regulatory requirement in the pharmaceutical manufacturing industry. One element of measures to prevent cross-contamination is the validation of cleaning processes for manufacturing equipment by ...
Apu Sarwar, Conor McSweeney, Joep Timmermans, Eric Moore   +3 more
doaj   +1 more source

1997–2007 CO trend at the high Alpine site Jungfraujoch: a comparison between NDIR surface in situ and FTIR remote sensing observations [PDF]

Atmospheric Chemistry and Physics, 2011
Within the atmospheric research community, there is a strong interest in integrated datasets, combining data from several instrumentations. This integration is complicated by the different characteristics of the datasets, inherent to the measurement ...
B. Dils, J. Cui, S. Henne, E. Mahieu, M. Steinbacher, M. De Mazière   +5 more
doaj   +1 more source

Measuring Kinematic Viscosity of Engine Oils: A Comparison of Data Obtained from Four Different Devices

Sensors, 2021
The aim of this paper is to compare the results of kinematic viscosity of lubricating oils measurements at 40 °C, obtained with three different rapid evaluation devices, and the standardized method using an Ubbelohde Capillary viscometer.
Artur Wolak, Grzegorz Zając, Tomasz Słowik   +2 more
doaj   +1 more source

Application of a Portable FTIR for Measuring On-road Emissions [PDF]

SAE Technical Paper Series, 2005
<div class="htmlview paragraph">The objective of this work was the development of an on-road in-vehicle emissions measurement technique utilizing a relatively new, commercial, portable Fourier Transform Infra-Red (FTIR) Spectrometer capable of identifying and measuring (at approximately 3 second intervals) up to 51 different compounds.
Daham, Basil, Andrews, Gordon E., Li, Hu, Rosario, Ballesteros, Bell, Margaret, Tate, James, Ropkins, Karl   +6 more
openaire   +2 more sources

First continuous measurements of δ¹⁸O-CO₂ in air with a Fourier transform infrared spectrometer [PDF]

Atmospheric Measurement Techniques, 2015
The continuous in situ measurement of δ18O in atmospheric CO2 opens a new door to differentiating between CO2 source and sink components with high temporal resolution.
S. N. Vardag, S. Hammer, M. Sabasch, D. W. T. Griffith, I. Levin   +4 more
doaj   +1 more source

An improved method for measuring epi-wafer thickness based on the infrared interference principle: Addressing interference quality and multiple interferences in double-layer structures

Results in Physics, 2023
The precise measurement of the thickness of substrate and epitaxial layers in epi-wafers is essential in the semiconductor chip fabrication process.
Jiaxing Sun, Zhisong Li, Haojie Zhang, Jinlong Song, Tianbao Zhai   +4 more
doaj   +1 more source

Structural, morphological and electrical properties of chitosan/methylcellulose blend polymer doped with different concentrations of NH4NO3

Materials Research Express, 2021
Polymer blend electrolytes based on chitosan: methylcellulose loaded with ammonium nitrate (NH _4 NO _3 ) were fabricated by solution cast method and characterized by XRD, FTIR, EIS, FESEM, and TNM techniques.
Sarkew S Abdulkareem
doaj   +1 more source