Search Results - "Béguin, A."

Atom Interferometry with Coherent Enhancement of Bragg Pulse Sequences by Béguin, A., Rodzinka, T., Calmels, L., Allard, B., Gauguet, A.

“…We report here on the realization of light-pulse atom interferometers with large-momentum-transfer atom optics based on a sequence of Bragg transitions. We…”
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A LC–tandem MS assay for the simultaneous measurement of new antiretroviral agents: Raltegravir, maraviroc, darunavir, and etravirine by Fayet, A., Béguin, A., Zanolari, B., Cruchon, S., Guignard, N., Telenti, A., Cavassini, M., Günthard, H.F., Buclin, T., Biollaz, J., Rochat, B., Decosterd, L.A.

“…Raltegravir (RAL), maraviroc (MVC), darunavir (DRV), and etravirine (ETV) are new antiretroviral agents with significant potential for drug interactions. This…”
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Sensitive determination of d-lactic acid and l-lactic acid in urine by high-performance liquid chromatography-tandem mass spectrometry by Henry, H., Marmy Conus, N., Steenhout, P., Béguin, A., Boulat, O.

“…ABSTRACT d‐Lactic acid in urine originates mainly from bacterial production in the intestinal tract. Increased d‐lactate excretion as observed in patients…”
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Tropopause level Rossby wave breaking in the Northern Hemisphere: a feature‐based validation of the ECHAM5‐HAM climate model by Béguin, A., Martius, O., Sprenger, M., Spichtinger, P., Folini, D., Wernli, H.

“…ABSTRACT Breaking synoptic‐scale Rossby waves (RWB) at the tropopause level are central to the daily weather evolution in the extratropics and the subtropics…”
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Determination of imatinib (Gleevec ®) in human plasma by solid-phase extraction–liquid chromatography–ultraviolet absorbance detection by Widmer, N, Béguin, A, Rochat, B, Buclin, T, Kovacsovics, T, Duchosal, M.A, Leyvraz, S, Rosselet, A, Biollaz, J, Decosterd, L.A

“…A sensitive HPLC method has been developed for the assay of imatinib in human plasma, by off-line solid-phase extraction followed by HPLC coupled with UV-Diode…”
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Determination of the novel non-peptidic HIV-protease inhibitor tipranavir by HPLC–UV after solid-phase extraction by Colombo, S., Béguin, A., Marzolini, C., Telenti, A., Biollaz, J., Decosterd, L.A.

“…An HPLC method previously described for the assay of amprenavir (APV), ritonavir (RTV), indinavir (IDV), saquinavir (SQV), nelfinavir (NFV), lopinavir (LPV),…”
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Determination of lopinavir and nevirapine by high-performance liquid chromatography after solid-phase extraction: application for the assessment of their transplacental passage at delivery by Marzolini, C, Béguin, A, Telenti, A, Schreyer, A, Buclin, T, Biollaz, J, Decosterd, L.A

“…An adaptation of the HPLC method previously described for the simultaneous assay of amprenavir, ritonavir, indinavir, saquinavir, nelfinavir and efavirenz…”
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Ultralow loss ring resonators using 3.5% index-contrast Ge-doped silica waveguides by Bourdon, G., Alibert, G., Beguin, A., Bellman, B., Guiot, E.

“…Ring resonators (RRs) with a round-trip loss below 0.1 dB and a maximum free-spectral range (FSR) of 62.7 GHz were successfully fabricated. Single-mode…”
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Adaptive Pairwise Comparison for Educational Measurement by Crompvoets, Elise A. V., Béguin, Anton A., Sijtsma, Klaas

“…Pairwise comparison is becoming increasingly popular as a holistic measurement method in education. Unfortunately, many comparisons are required for reliable…”
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On the Bias and Stability of the Results of Comparative Judgment by Crompvoets, Elise A. V., Béguin, Anton A., Sijtsma, Klaas

“…Comparative judgment is a method that allows measurement of a competence by comparison of items with other items. In educational measurement, where comparative…”
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Multilevel Latent Class Analysis for Large-Scale Educational Assessment Data: Exploring the Relation Between the Curriculum and Students' Mathematical Strategies by Fagginger Auer, Marije F., Hickendorff, Marian, Van Putten, Cornelis M., Béguin, Anton A., Heiser, Willem J.

“…A first application of multilevel latent class analysis (MLCA) to educational large-scale assessment data is demonstrated. This statistical technique addresses…”
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Intracellular measurements of anti-HIV drugs indinavir, amprenavir, saquinavir, ritonavir, nelfinavir, lopinavir, atazanavir, efavirenz and nevirapine in peripheral blood mononuclear cells by liquid chromatography coupled to tandem mass spectrometry by COLOMBO, S, BEGUIN, A, TELENTI, A, BIOLLAZ, J, BUCLIN, T, ROCHAT, B, DECOSTERD, L. A

“…A sensitive and accurate liquid chromatography-tandem mass spectrometric (LC-MS/MS) method for the intracellular determination of nine antiretroviral drugs in…”
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Determination of aciclovir and ganciclovir in human plasma by liquid chromatography–spectrofluorimetric detection and stability studies in blood samples by Perrottet, N., Beguin, A., Meylan, P., Pascual, M., Manuel, O., Buclin, T., Biollaz, J., Decosterd, L.A.

“…A sensitive HPLC method has been developed for the assay of aciclovir and ganciclovir in human plasma, by HPLC coupled with spectrofluorimetric detection…”
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The Effect of Differential Motivation on IRT Linking by Mittelhaëuser, Marie-Anne, Béguin, Anton A., Sijtsma, Klaas

“…The purpose of this study was to investigate whether simulated differential motivation between the stakes for operational tests and anchor items produces an…”
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Mcmc estimation and some model-fit analysis of multidimensional irt models by BEGUIN, A. A, GLAS, C. A. W

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Obtaining a Common Scale for Item Response Theory Item Parameters Using Separate Versus Concurrent Estimation in the Common-Item Equating Design by Hanson, Bradley A., Béguin, Anton A.

“…Item response theory item parameters can be estimated using data from a common-item equating design either separately for each form or concurrently across…”
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Educational measurement issues and implications of high stakes decision making in final examinations in secondary education in the Netherlands by van Rijn, P.W., Béguin, A.A., Verstralen, H.H.F.M.

“…While measurement precision is relatively easy to establish for single tests and assessments, it is much more difficult to determine for decision making with…”
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Poly-phased matrix converter for large synchronous generators - Design of the voltage surge protection by Beguin, A., Rufer, A., Lacaze, A.

“…This paper introduces a special mx3 matrix converter connected between the stator of a poly-phased synchronous generator and a power grid. Some commutations of…”
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HCV genotype distribution in Flanders and Brussels (Belgium): unravelling the spread of an uncommon HCV genotype 5a cluster by Verbeeck, J, Kwanten, L, D'Heygere, F, Beguin, A, Michiels, S, Desombere, I, Leroux-Roels, G, Lemey, P, Nevens, F, Van Ranst, M

“…In order to study the hepatitis C virus (HCV) epidemiology in Flanders, Belgium, the HCV genotype of 2,301 patients diagnosed with HCV between 2001 and 2009…”
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Using Classical Test Theory in Combination with Item Response Theory by Bechger, Timo M., Maris, Gunter, Verstralen, Huub H. F. M., Béguin, Anton A.

“…This study is about relations between classical test theory (CTT) and item response theory (IRT). It is shown that CTT is based on the assumption that measures…”
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