Silica GelSilicon DioxideGelsChromatography, Thin LayerChromatography, High Pressure LiquidFermentationPhysicochemical PhenomenaChemistry, PhysicalSilicosisStreptomycesPsychomotor PerformanceTask Performance and AnalysisSpectrophotometry, InfraredMagnetic Resonance SpectroscopyBenzylammonium CompoundsBoric AcidsEthylenethioureaMolecular StructureAdsorptionChromatographyIndicators and ReagentsCoccidiostatsHexanesSilver NitrateForssman AntigenSpectrometry, Mass, Fast Atom BombardmentSpectrophotometry, UltravioletPlant ExtractsMetals, Rare EarthEnzymes, ImmobilizedSpectrophotometry, AtomicDensitometryChromatography, GasChemistryChemical PhenomenaCerebrosidesReproducibility of ResultsMethodsSensitivity and SpecificityAthletic PerformanceSurface PropertiesMicrochemistryNiobiumMass SpectrometrySilanesHydrogen-Ion ConcentrationStereoisomerismFungiStigmasterolAnti-Bacterial AgentsGlycolipids