نتایج جستجو برای: sodium adsorption

تعداد نتایج: 239693  

Journal: :international journal of advanced biological and biomedical research 2014
a. gholami h. r. asgari z. saeidifar

this study was designed to investigate the effects of different tillage systems on some parameters such as soil salinity (ph, ec, sar), soil density and nutrients in a nested experimental design with three treatments (no tillage, reduced tillage and conventional tillage) and three replications. chenaran city fields were selected as the case study areas. result of the statistical analysis indica...

Journal: :The Journal of biological chemistry 1980
G N Levy D Aminoff

Exo-alpha-N-acetylgalactosaminidase has been purified 8000-fold from Clostridium perfringens by gel filtration, ion exchange chromatography, isoelectric precipitation, and negative adsorption on human O type erythrocytes. The resulting enzyme is active at physiological pH and temperature. Phenyl glycosides, oligosaccharides, mucins, glycolipids, and cell membranes are substrates for this enzyme...

2003
N. J. Turro

The role of sequential adsorption of a non-interacting pair of polymer (polyacrylic acidPAA) and surfactant (sodium dodecyl sulfate-SOS) on alumina particles and in determining the stability of their suspensions was studied with particular attention to the confonnation of the polymer. It was found that the sequence of addition is of critical importance in detennining the dispersion/flocculation...

2006
PATRICK J. PHELAN SHAS V. MATTIGOD

-Adsorption of Mo(VI) on 2-0.2-um size fraction of sodium-saturated kaolinite at 25 _+ 2~ and at a constant pH of 7.00 _+ 0.05 was studied. The kaolinite sample was pretreated to remove any surface oxide and hydroxide coatings. The initial concentrations of Mo in solution ranged from 1 to 11 mg/liter in a NaC104 background electrolyte at a constant ionic strength of 0.09 _+ 0.01. Calculations o...

Journal: :Postgraduate medical journal 1977
J C Garnham T Kaspi C M Kaye V M Oh

The influence of oral sodium bicarbonate and aluminium hydroxide on the absorption of indomethacin has been studied in normal volunteers. While sodium bicarbonate appeared to increase indomethacin absorption, aluminium hydroxide markedly reduced both the rate and extent of absorption. The buccal absorption of indomethacin over the pH range 5-9 was also studied in normal volunteers, and showed t...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2011
Minglei Chen Chuchuan Dong Jeff Penfold Robert K Thomas Thomas J P Smyth Amedea Perfumo Roger Marchant Ibrahim M Banat Paul Stevenson Alyn Parry Ian Tucker Richard A Campbell

The adsorption of the lactonic (LS) and acidic (AS) forms of sophorolipid and their mixtures with the anionic surfactant sodium dodecyl benzene sulfonate (LAS) has been measured at the air/water interface by neutron reflectivity, NR. The AS and LS sophorolipids adsorb with Langmuir-like adsorption isotherms. The more hydrophobic LS is more surface active than the AS, with a lower critical micel...

2010
Obsidiana Abril Debbie C. Crans George M. Whitesides

An enzymatic procedure for the synthesis of adenosine 5'-O-(3-thiotriphosphate) (ATP-r-S) on a 5O-mmol scale from dihydroxyacetone, sodium thiophosphate, ADP, and phosphoenol pyruvate is described. The synthesis uses polyacrylamide gel immobilized glycerokinase coupled to a pymvate kinase catalyzed ATP cofactor regeneration system, and polyacrylamide gel immobilized triosephosphate isomerase, g...

Journal: :Journal of Chemical Engineering & Process Technology 2017

Lobat Taghavi, Raziyeh Zandipak, Soheil Sobhanardakani*,

Background: The rapid increase in agricultural and industrial development has made heavy metal pollution a serious environmental problem and public health threat; therefore, removal of heavy metals from water is important. The current study prepared DNPH@SDS@Fe3O4 nanoparticles as a novel and effective adsorbent for removal of Hg(II) ions from an aqueous solution. Methods: A selective adsorben...

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