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Electrokinetic behavior of borax in saturated solutions and its role in flotation
Published in Gülhan Özbayoğlu, Çetin Hoşten, M. Ümit Atalay, Cahit Hiçyılmaz, A. İhsan Arol, Mineral Processing on the Verge of the 21st Century, 2017
M. Müdüroğlu, M.S. Çelik, M. Hançer, J.D. Miller
The viscosity measurements are very sensitive to impurities in solutions, and special care must be taken during the experiment. All the inorganic salts used in viscosity measurements were reagent grade. Mili Q water (18MΩ) used in all experiments. The viscosity measurements were performed using an Ubbelohde Viscometer for transparent liquid, purchased from Cannon Instrument Co. This viscometer has the estimated accuracy of ±0.1% provided by the producer. Viscometer was cleaned with chromic acid followed by rinsing with Milli Q water. Viscometer then was placed into the holder and placed in the constant temperature bath where the temperature was set to 25 °C. Saturated solutions were filtered from the 0.45-micron filter to remove the dust particles from solutions. In this viscometer, basically efflux time is being measured while the solution flows freely between the two marked lines. Kinematic viscosity of the solution in mm2/s or centistokes (cSt) is then calculated multiplying the efflux time in seconds by the viscometer constant provided by the manufacturer.
Thermal properties and CT-DNA/BSA binding behavior of a binuclear Cu(II) complex with acylhydrazone containing naphthalene ring
Published in Journal of Coordination Chemistry, 2018
Ming-Kun Yu, Xiang-Rong Liu, Jin-Wen Ren, Jing-Jing Liu, Zai-Wen Yang, Shun-Sheng Zhao
All reagents and chemicals were purchased from commercial sources and used without purification. Elemental analyses were performed on a P.E.2400-II instrument. The structures were determined by a Bruker Smart Apex II CCD diffractometer equipped with graphite monochromated Mo-Kα radiation (λ = 0.71073 Å), solved by direct methods and refined by full-matrix least-squares on F2 with the SHELXL program. IR spectra were recorded on a P.E. GXIV5.0.1 instrument using KBr disks from 400 to 4000 cm−1. UV–vis spectra were obtained with a TU-1900 spectrophotometer. EPR spectra were displayed using a Bruker EMX-10/12 spectrophotometer. Magnetic susceptibility experiments for [Cu2L2(NO3)2] were carried out with a Quantum Design MPMS-XL-7 magnetometer under an applied magnetic field of 1000 Oe. Thermal gravimetric analyses were investigated by a Mettler-Toledo TG-DSC1 HT instrument. Viscosity measurements were carried out by a Ubbelohde viscometer. Interaction heat flows between compounds with CT-DNA were measured with a C80 microcalorimeter. BSA binding behavior of compounds was analyzed by a P.E. Fluorescence Spectrometer LS55 (λex = 280 nm).
Syntheses, crystal structures, thermal stabilities, CT-DNA, and BSA binding characteristics of a new acylhydrazone and its Co(II), Cu(II), and Zn(II) complexes
Published in Journal of Coordination Chemistry, 2020
Jing-Jing Liu, Xiang-Rong Liu, Shun-Sheng Zhao, Zai-Wen Yang, Zheng Yang
Elemental analyses (C, H, and N) were performed on a Perkin-Elmer 2400-II instrument. The single-crystal structures were determined on a Bruker Smart Apex II CCD diffractometer. Thermogravimetric analyses were carried out using a Mettler-Toledo TG-DSC1 HT instrument. UV–vis absorption spectra data were collected with a TU-1950 spectrophotometer. Viscosity experiments were investigated by an Ubbelohde viscometer. Fluorescence spectra were recorded on a PE-LS-55 spectrometer. The heat flows were measured using a C80 microcalorimeter.