نتایج جستجو برای: breakthrough curve

تعداد نتایج: 139336  

Journal: :Journal of contaminant hydrology 2005
Gilbert Barth Mary C Hill

Using one- and two-dimensional homogeneous simulations, this paper addresses challenges associated with sensitivity analysis and parameter estimation for virus transport simulated using sorptive-reactive processes. Head, flow, and conservative- and virus-transport observations are considered. The paper examines the use of (1) observed-value weighting, (2) breakthrough-curve temporal moment obse...

Journal: :Oncology 1998
R B Patt N M Ellison

"Breakthrough pain" is a common clinical term that has not been conclusively defined or described. Breakthrough pain is a transitory flare of pain experienced when baseline pain has been reduced to a mild or moderate level. Breakthrough pain may be characterized by its relationship to a fixed around-the-clock (ATC) opioid dose, rapid onset and short duration, precipitating events, predictabilit...

Journal: :Journal of physics 2022

Abstract Elliptic Curve Cryptography (ECC) is one of the strongest and most efficient cryptographic techniques in modern cryptography. This paper gives following introduction: The introduction cryptography’s development; elliptic curve; principle ECC; horizontal comparison between ECC other types cryptography; breakthrough applications by using a method literature review. study’s findings indic...

Journal: :Applied and environmental microbiology 1993
A K Camper J T Hayes P J Sturman W L Jones A B Cunningham

Three strains of Pseudomonas fluorescens with different motility rates and adsorption rate coefficients were injected into porous-medium reactors packed with l-mm-diameter glass spheres. Cell breakthrough, time to peak concentration, tailing, and cell recovery were measured at three interstitial pore velocities (higher than, lower than, and much lower than the maximal bacterial motility rate). ...

2014
Hary Demey-Cedeño Montserrat Ruiz Jesús Alberto Barron-Zambrano Ana Maria Sastre

BACKGROUND A column sorption study was carried out using calcium alginate gel beads as adsorbent for the removal of boron from aqueous solutions. The breakthrough curve was obtained as a function of pH, initial concentration of boron, feed flow rate, adsorbent mass and column diameter. The breakthrough capacity values and adsorption percentage of calcium alginate gel for boron were...

2013
Fatemeh Kafshgari Ali Reza Keshtkar Mohammad Ali Mousavian

Molybdenum (VI) biosorption process was investigated by marine algae Cystoseria indica pretreated with 0.1 M CaCl2 solution in a packed bed column. The biosorbent was characterized by FTIR, BET and SEM analyses. The results showed that Mo (VI) ions should be chelated with the hydroxyl, carboxyl and amine groups of the biomass. The effects of inlet metal concentration and flow rate on biosorptio...

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