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Functional groups strongly affect amino acid LC-MS derivatization
Systematic evaluation of derivatization agents for LC-MS amino acid analysis identifies isoquinoline-6-carboxylic acid NHS ester as optimal, achieving nanomolar sensitivity and long-term stability.
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RFS mode improved chromatography efficiency and lowered pressure
Novel radial flow stream splitting HPLC columns reduce analysis time by 40 percent while maintaining quantitative accuracy for pharmaceutical drug testing.
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Open communication lowers work stress and burnout
Quantitative analysis of 107 employees examines how open, hierarchical, and disorganized business communication cultures influence work stress, burnout dimensions, and perceived control.
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Validated HPLC method for clofazimine and pyrazinamide analysis
RP-DAD-HPLC method development and ICH Q2 validation for simultaneous quantitative analysis of clofazimine and pyrazinamide in fixed-dose combination topical delivery systems.
