Results 31 to 40 of about 1,064,285 (340)

Determination of Vitamin C in Foods Using the Iodine-Turbidimetric Method Combined with an Infrared Camera

Applied Sciences, 2020
A novel method was proposed for the determination of vitamin C (VC) using an infrared camera combined with the iodine-turbidimetric method. Based on the redox between VC and iodine, the residual iodine was measured using the turbidimetric method with an ...
Yi Miao, Yuanyang Zhu, Wenzhu Zhao, Changshuai Jiao, Hongwei Mo, Xincheng Zhang, Sheng Liu, Hongwen Gao   +7 more
doaj   +1 more source

Fourier Transform Infrared Spectrophotometry Studies of Chromium Trioxide-Phthalic Acid Complexes

, 2016
In the present investigation Cr-metal complexes has been prepared using chromium trioxide and phthalic acid. FTIR spectra of solid samples were recorded.
M. Mishra
semanticscholar   +1 more source

The timing and location of dust formation in the remnant of SN 1987A [PDF]

, 2014
The discovery with the {\it Herschel Space Observatory} of bright far infrared and submm emission from the ejecta of the core collapse supernova SN\,1987A has been interpreted as indicating the presence of some 0.4--0.7\,M$_\odot$ of dust.
Barlow, M. J., Ercolano, B., Matsuura, M., Wesson, R.   +3 more
core   +4 more sources

Synthesis, Characterization and Antimicrobial Activities of Copper-Tea Leaves (Camellia Sinensis) Extract Nanoparticles.

Journal of Nigerian Society of Physical Sciences, 2022
Nanoparticles, NPs synthesis has gained attention recently due to their ease of preparation (especially green synthesis), availability of raw materials and usefulness. The green synthesis of copper nanoparticles (CuNPs) was done using Tea leaves extract-
Boniface Tersoo Iorhuna, Timothy Tertsea Awuhe, Igbalagh Chia Azuaga, Ernest Isaac, Faisal Shuaibu, Banwala Yohanna   +5 more
doaj   +1 more source

Detection of Solvents by Infrared Spectrophotometry [PDF]

Journal of AOAC INTERNATIONAL, 1967
Abstract The solvent used in the recrystallization of a solid may be determined by use of the IR spectrum and gas cell. Recrystallized powders retain a minute amount of solvent which is not detectable in a KBr disk of the powder, but is detectable when a gas cell is vised.
Evelyn Sarnoff, George Schwartzman, Daniel J Sullivan   +2 more
openaire   +1 more source

Oleochemicals I: Studies on the preparation and the structure of lithium soaps.

Grasas y Aceites, 1999
Lithium stéarate, palmitate, myristate, laurate, caprate and caprylate were prepared by means of fusion method. Elementary analysis and the infrared absorptions spectra of the prepared lithium soaps as well as their X-ray diffractions and the ...
Zein E. Shoeb, Bayed M. Hammad, A. A. Yousef   +2 more
doaj   +1 more source

The high-field polar RX J1007.5-2017 [PDF]

, 2012
We report optical and X-ray observations of the high-field polar RXJ1007.5-2017 performed between 1990 and 2012. It has an orbital period of 208.60 min determined from the ellipsoidal modulation of the secondary star in an extended low state.
Beuermann, K., Burwitz, V., Reinsch, K., Schwope, A. D., Thomas, H. -C.   +4 more
core   +2 more sources

Exoplanet Research with the Stratospheric Observatory for Infrared Astronomy (SOFIA)

, 2017
When the Stratospheric Observatory for Infrared Astronomy (SOFIA) was conceived and its first science cases defined, exoplanets had not been detected. Later studies, however, showed that optical and near-infrared photometric and spectrophotometric follow-
B Placek, B Placek, D Angerhausen, D Angerhausen, D Angerhausen, D Angerhausen, EW Dunham, F Pont, H Rauer, H Zinnecker, J Eastman, JZ Gazak, M Hippke, MJ Person, MR Swain, PW Sullivan, RD Gehrz, RT Zellem, Sz. Csizmadia, Sz. Csizmadia   +19 more
core   +1 more source

Training Graduate Students in Utilization of Analytical Instruments in a Failure Analysis Course [PDF]

, 2019
Department of Engineering Technology at University of North Texas offers a graduate course on failure analysis (MSET 5150) during spring semesters. Partial requirement for the course is for students to submit a term paper based on their collected data ...
Gamez-Rivas, F., Nasrazadani, S., Padamati, N., Sekar, S., Wang, X.   +4 more
core   +1 more source

A 2.4 - 12 microns spectrophotometric study with ISO of Cygnus X-3 in quiescence

, 2002
We present mid-infrared spectrophotometric results obtained with the ISO on the peculiar X-ray binary Cygnus X-3 in quiescence, at orbital phases 0.83 to 1.04.
A. Claret, Abergel, Becklin, Bonnet-Bidaud, Cherepashchuk, Choudhury, Churchwell, Crowther, Crowther, Ergma, Fender, Fender, Fender, Gabriel, Giacconi, Haas, Hanson, J.-M. Bonnet-Bidaud, Kessler, Kitamoto, L. Koch-Miramond, Levine, Lutz, Martí, Martí, Mason, McCollough, Mioduszewski, Mioduszewski, Mitra, Morel, Morris, Morris, Ogley, P. Ábrahám, Pittard, Schmid-Burgk, Skinner, Starck, Stevens, van den Heuvel, van der Hucht, van Kerkwijk, van Kerkwijk, Vanbeveren, Williams, Wright, Y. Fuchs   +47 more
core   +1 more source