Buried Waveguides With Nearly Circular Cross-Sections Produced By Solid Phase Silver Ion Exchange

1989 ◽  
Author(s):  
C. Gunther ◽  
D. Jestel ◽  
H. J. Lilienhof
Keyword(s):  
Ion Exchange ◽  
Cross Sections ◽  
Solid Phase ◽  
Silver Ion

scholarly journals Sensitive determination of gentamicin in plasma using ion-exchange solid-phase extraction followed by UHPLC-MS/MS analysis

2021 ◽  
pp. e00246
Author(s):  
Ana Laura Anibaletto dos Santos ◽  
Anne Caroline Cezimbra da Silva ◽  
Lilian de Lima Feltraco Lizot ◽  
Anelise Schneider ◽  
Roberta Zilles Hahn ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Phase Extraction ◽  
Ms Analysis ◽  
Sensitive Determination

Ion-exchange temperature matching technology in GRIN glass containing silver ion

2004 ◽  
Author(s):  
Zhimei Su ◽  
Tong Liu ◽  
Lijun Kang ◽  
Yu'e Kong
Keyword(s):  
Ion Exchange ◽  
Silver Ion

Effects of silver ion exchange and subsequent treatments on the UV–VIS spectra of silicate glasses. I. Undoped, CeO2-doped, and (CeO2+Sb2O3)-codoped photo-thermo-refractive matrix glasses

2013 ◽  
Vol 378 ◽  
pp. 213-226 ◽  
Author(s):  
Evgenii M. Sgibnev ◽  
Alexander I. Ignatiev ◽  
Nikolay V. Nikonorov ◽  
Andrei M. Efimov ◽  
Evgenii S. Postnikov
Keyword(s):  
Ion Exchange ◽  
Silver Ion ◽  
Silicate Glasses

Comparative Assessment of Turbulence Models for Prediction of Flow-Induced Corrosion Damages

2011 ◽  
Author(s):  
Kaushik Das ◽  
Debashis Basu ◽  
Todd Mintz
Keyword(s):  
Corrosion Rate ◽  
Cross Sections ◽  
Volume Fraction ◽  
Solid Phase ◽  
Turbulence Models ◽  
Reynolds Stress Model ◽  
Continuous Phase ◽  
Comparative Assessment ◽  
Solid Particles ◽  
Protective Film

The present study makes a comparative assessment of different turbulence models in simulating the flow-assisted corrosion (FAC) process for pipes with noncircular cross sections and bends, features regularly encountered in heat exchangers and other pipeline networks. The case study investigates material damage due to corrosion caused by dissolved oxygen (O2) in a stainless steel pipe carrying an aqueous solution. A discrete solid phase is also present in the solution, but the transport of the solid particles is not explicitly modeled. It is assumed that the volume fraction of the solid phase is low, so it does not affect the continuous phase. Traditional two-equation models are compared, such as isotropic eddy viscosity, standard k-ε and k-ω models, shear stress transport (SST) k-ω models, and the anisotropic Reynolds Stress Model (RSM). Computed axial and radial velocities, and turbulent kinetic energy profiles predicted by the turbulence models are compared with available experimental data. Results show that all the turbulence models provide comparable results, though the RSM model provided better predictions in certain locations. The convective and diffusive motion of dissolved O2 is calculated by solving the species transport equations. The study assumes that solid particle impingement on the pipe wall will completely remove the protective film formed by corrosion products. It is also assumed that the rate of corrosion is controlled by diffusion of O2 through the mass transfer boundary layer. Based on these assumptions, corrosion rate is calculated at the internal pipe walls. Results indicate that the predicted O2 corrosion rate along the walls varies for different turbulence models but show the same general trend and pattern.

Effects of contaminant radioactivity on results of 125I-radioligand assay.

1979 ◽  
Vol 25 (11) ◽  
pp. 1975-1977 ◽  
Author(s):  
L R Witherspoon ◽  
S E Shuler ◽  
M M Garcia ◽  
L A Zollinger
Keyword(s):  
Polyethylene Glycol ◽  
Ion Exchange ◽  
Exchange Resin ◽  
Solid Phase ◽  
Ion Exchange Resin ◽  
Dose Estimation ◽  
Imaging Procedures ◽  
Nonspecific Binding ◽  
Endogenous Ligand ◽  
Dose Concentration

Abstract Diagnostic radionuclide imaging procedures are often used in patients whose sera are later assayed by use of 125I-labeled radioligands; thus, it is important to identify those assays that potentially may be affected by contaminating radioactivity. Results obtained with assays in which specific separation methods (solid-phase primary antibody, second antibody) or small (10--25 micdo L) sample volumes are used are little affected by the presence of such contaminating radioactivity. Less-specific techniques (polyethylene glycol, charcoal, ion-exchange resin) segregate some of the contaminant activity into the bound fraction. The degree to which such activity is protein bound and the concentration of endogenous ligand then contribute to the resulting error in dose estimation. Samples for these assays should be screened for radioactivity before the assay is begun. Inclusion of nonspecific binding tubes for patients' samples when contamination is present permits the contaminating radioactivity to be evaluated and the patient's dose concentration to be more accurately estimated.

Structural Characterisation of Silver Ion Exchange in Alumino-Silicate Glasses

1993 ◽  
Vol 32 (S2) ◽  
pp. 667 ◽  
Author(s):  
J. Marie Inman ◽  
Susan N. Houde-Walter ◽  
G. Neville Greaves ◽  
Andrew J. Dent ◽  
Barry R. Dobson
Keyword(s):  
Ion Exchange ◽  
Silver Ion ◽  
Silicate Glasses ◽  
Structural Characterisation ◽  
Alumino Silicate

Solid-phase nanoreactor based on calix[4]resorcinarene: Gel diffusion kinetics of ion exchange

2009 ◽  
Vol 43 (1) ◽  
pp. 43-49 ◽  
Author(s):  
O. H. Altshuler ◽  
N. V. Malyshenko ◽  
G. J. Shkurenko ◽  
H. N. Altshuler
Keyword(s):  
Ion Exchange ◽  
Solid Phase ◽  
Diffusion Kinetics ◽  
Kinetics Of ◽  
Gel Diffusion ◽  
Kinetics Of Ion Exchange
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