Search results for "Surface barrier"

showing 3 items of 3 documents

The decay of $^{31}$Ar

1990

10 pages, 1 table, 4 figures.

PhysicsNuclear and High Energy PhysicsMeasured β-delayed Ep pp coinProtonBranching fractionOn-line mass separationNuclear Theory31Ar deduced decay channelsCaO targetNuclear physicsRadioactivity 31Ar(β+) [from Ca(p 3pxn) reaction]Physics::Accelerator PhysicsSurface barrier Si detectorsNuclear Physics - ExperimentLimit (mathematics)Atomic physicsNuclear ExperimentGround state
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Two-proton emission in the decay of Ar-31

1998

18 pages, 7 figures, 2 tables.-- PACS nrs.: 23.40.Hc; 27.30.+t.

PhysicsNuclear and High Energy PhysicsRadioactivity Ar-31(beta(+)p) [from Ca(p3pxn) reaction]Be-6Delayed 2-proton emissionNuclear TheoryOn-line mass separationAl-22Measured beta-delayed E-p pp-coinCaO target3-particle decaysNucleiNuclear physicsSystematicsIsobaric processSurface barrier Si detectorsAtomic physicsProton emissionNuclear ExperimentGround stateSpin (physics)Ar-31 deduced beta 2p-decay channels
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Packing meterials with surface barriers, controlled distribution and topography of ligands for sample clean-up and analysis of biologically active so…

1991

Various types of, so-called, restricted access packings have been developed for sample clean-up and analysis of biologically active solutes by means of HPLC. The unique feature of these packings is that they prevent the access of matrix components such as protein whilst selectively retaining the drug components and their metabolites. This results from the fact that the particles of the packings possess a surface barrier for large solutes at the external or internal surface area and exhibit a controlled gradient in the chemical surface composition. They are grouped, according to their particle structures, into internal-surface reversed phases (ISRP), shielded hydrophobic phases (SHP), semi-p…

Surface (mathematics)Surface barrierChromatographyChemistryOrganic ChemistryClinical BiochemistryRestricted accessBiological activityBiochemistryHigh-performance liquid chromatographyAnalytical ChemistryClean-upMatrix (chemical analysis)ParticleChromatographia
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