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Showing 1 to 16 of 16 for “"hydroxyl ion"”.
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Raman-Scattering From the Hydroxyl Ion in Alkali-Halides
Made available in DSpace on 2015-05-12T21:41:54Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7013307.PDF: 2659365 bytes, checksum: defbf62f5fdba09aa65489cbb2583700 (MD5) Previous issue date: 1969
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Raman scattering from the hydroxyl ion in alkali halides
"Raman scattering has been observed from the hydroxyl ion in NaCl, KCl. and KBr crystals. The measurements were made using an argon ion laser as a light source and a tandem double monochromator with photoelectric detection. The crystals were cleaved and mounted in such a way that the directions and …
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Raman measurements on the hydroxyl ion in several alkali-halide crystals
… An argon laser was used as the source of excitation. Filtration of the scattered light provided by -1 an iodine cell permitted direct observation of the spectra below 40 cm for the first time. In NaCl:OH, a line was observed in the Eg spectrum at 3.2 cm-l. It represented the transition between …
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Near Infrared Absorption Bands of the Hydroxyl Ion in Alkali-Halide Crystals
Made available in DSpace on 2015-05-12T21:41:43Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 6801880.PDF: 2794999 bytes, checksum: efd2c87f4a26755cda473293c629510a (MD5) Previous issue date: 1967
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Near infrared absorption bands of the hydroxyl ion in alkali halide crystals
The near infrared absorption bands due to OH- in NaC1, NaBr, KCI, KBr, KI, and RbC1 have been measured at temperatures ranging from 1.4~ to 380 oK. Energy levels of the hydroxyl dipole in the crystal lattice were determined from the spectra. The crystals were grown by the Czochra1ski m~thod in a …
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An ultrasonic study of hydroxyl ion in single crystals of rubidium chloride
Ultrasonic measurements o~ absorption and velocity changes of sound waves on single crystals of RbCl containing OH ions were made as a function of polarization, frequency, concentration and temperature from 0.6 K to 24 K. A rise in absorption of the low frequency (10 to 70 MHz) Cmode sound waves …
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Apical and radial pH diffusion through root dentin from five modern intracanal medicaments: a twelve-week evaluation of alkaline dynamics
… the temporal and spatial behavior of hydroxyl ion diffusion through root dentin from five contemporary intracanal medicaments over 12 weeks, with emphasis on vehicle composition and apical diffusion beyond the medicament terminus. METHODS: Sixty-six extracted single-rooted human teeth …
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Effect of adsorption of non-protolyzable anions on goethite (alpha-FeOOH) mobility
… CONTROLS ON THE MOBILITY OF MANY INORGANIC IONS IN THE ENVIRONMENT. ANION ADSORPTION ON IRON HYDROXIDE USUALLY DECREASES THE PARTICLE MOBILITY AND MAKES THE PARTICLE SURFACE LESS POSITIVE. HOWEVER, FOR SOME NON-PROTOLYZABLE ANIONS LIKE FLUORIDE AND ARSENITE, THE ADSORPTION HAS ALMOST NO …
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Silicon-based pH sensor for biological and environmental applications
In biological and environmental applications, it is desirable to be able to measure hydrogen and hydroxyl ion concentrations (pH levels). Conventionally, the measurement processes take a considerable amount of time involving several calibration steps and handling of fragile electrodes. Here we …
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The control of alkali silica reaction using blended cements
… previously established that alkali silica reaction (ASR) in concrete may be controlled by blending Portland cement with suitable hydraulic or pozzolanic materials. The controlling mechanism has been attributed to the dilution of the cement's alkali content and reduced mobility of ions in …
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The ring opening polymerization of ring strained cyclic ethers
… and mechanisms of the ring-opening polymerization of oxetane were studied using cationic and coordinated anionic catalysts. The cationic initiators used were BF30Et2!/ethanol, BF30Et2!/ethanediol and BF30Et2/propantriol. Kinetic determinations with the BF30Et2/diol system indicated that a 1: 1 …
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A factorial approach to the study of alkali-silica reaction in concrete
… certain aspects of the alkali-silica reaction in concrete. A factorial approach was adopted for the experimental stages of the investigation. Such an approach is based on proven statistical techniques and has the advantage of allowing any interaction between the experimental factors to be …
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Dipole-Dipole Interactions in Alkali Halides Doped with Hydroxyl
Submitted by Jesse Garrison (jagarris@illinois.edu) on 2011-06-10T16:27:13Z No. of bitstreams: 1 1981_potter.pdf: 3658463 bytes, checksum: 3b170f5a7503b36a6d1012bd8b556457 (MD5)
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Importance of Self-Interaction Correction in Hydrogen-Bonded Water Clusters and Water-Ion Clusters
Density functional theory is the most commonly used computational tool to study properties of solids and molecules. Self-interaction error, that arises due to improper cancellation of the self-Hartree and the self exchange correlation energy, has long been identified as a major limitation of …
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Vertically-aligned carbon nanotube membranes for water desalination and ultrafiltration
… shortage of fresh water. Modern water filtration techniques includes Reverse Osmosis (RO), Forward Osmosis (FO), and Solar Distillation etc. Due to its high separation performance and comparatively low prices, membrane technology is widely applied in many fields such as medical science, …
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Characterization of bio-hybrid interfaces under ambient conditions
… samples were explored under various conditions before and after sputtering with 1 keV nitrogen N2 ions, followed by the functionalization with deionized water (H2O) and neutral L-cysteine (C3H7NO2S) molecules. Atomic force microscopy (AFM), low energy electron diffraction (LEED), and X-ray …