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Follow-up of Helicobacter pylori infection in children over two decades (1988-2007): persistence, relapse and acquisition rates.
Humans Male Metronidazole Multivariate Analysis Recurrence Stomach Abstract: Helicobacter pylori culture on gastric biopsy was performed on 4964 subjects aged <18 years from 1988 to 2007 at a central ...
Evaluation of the migration of 15 photo-initiators from cardboard packaging into Tenax(®) using ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS).
extracted using acetonitrile, followed by analysis on ultra-performance liquid chromatography-tandem mass spectrometry (UPLC- MS / MS). Quantification was carried out using benzophenone-d10 (BP-d10) as ...
Distinction between persistent and transient infection in a bovine viral diarrhoea (BVD) control programme: appropriate interpretation of real-time RT-PCR and antigen-ELISA test results.
to assess the performances of diagnostic assays used in the testing scheme for BVD as proposed by the two Belgian regional laboratories. Individual blood samples were collected from 4972 animals, and ...
Laboratory diagnosis of paediatric tuberculosis in the European Union/European Economic Area: analysis of routine laboratory data, 2007 to 201136508
paediatric performance Predictive value Questionnaire RANGE RATES routine routine laboratory Sample Samples SB- IM SENSITIVITY specificity sputum survey Test tests Tuberculosis UK United Kingdom United-kingdom ...
Multi-dye residue analysis of triarylmethane, xanthene, phenothiazine and phenoxazine dyes in fish tissues by ultra-performance liquid chromatography-tandem mass spectrometry.
ultra-performance liquid chromatography-tandem mass spectrometry. Samples were extracted with acetonitrile, followed by an oxidation step using 2,3-dichloro-5,6-dicyanobenzoquinone. Further clean-up was performed by ...
MALDI-TOF mass spectrometry identification of filamentous fungi in the clinical laboratory2175
Laboratories limitation MALDI-TOF Mass Mass Spectrometry means method methods MS ON performance result results routine routine laboratory Sample Species study teaching Universities university university hospital ...
Commutability of food microbiology proficiency testing samples.
Keywords: Food Microbiology Laboratory Proficiency Testing Reference Standards Abstract: AIM: Food microbiology proficiency testing (PT) is a useful tool to assess the analytical performances among ...
Application of a cell-based protease assay for testing inhibitors of picornavirus 3C proteases.
performed in vitro, using heterologously expressed proteases and peptide substrates. To deal with the disadvantages associated with in vitro assays, we modified a cell-based protease assay for picornavirus ...
Characterization of suspected illegal skin whitening cosmetics.
EU market. A newly developed screening method using ultra high performance liquid chromatography-time off flight-mass spectrometry allows routine analysis of suspected products. 163 suspected skin ...
Dietary intake of lycopene by the Belgian adult population.
assessment. Determination of the lycopene content in foods was performed with HPLC- UV. Individual food consumption data were multiplied by the actual mean concentrations of lycopene per food. SUBJECTS: ...