Publications
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Optimal performance trade-offs in repetitive control: Experimental validation on an active air bearing setup KU Leuven
In repetitive control, the Bode Sensitivity Integral dictates a fundamental trade-off between improved suppression of periodic disturbances and degraded performance for nonperiodic inputs. This paper experimentally demonstrates the implications of this trade-off by applying a recently developed systematic repetitive control design approach to an active air bearing setup. This design methodology translates the fundamental trade-off into trade-off ...
Assessment of the sensitization potential of persulfate salts used for bleaching hair KU Leuven
BACKGROUND: Persulfate salts have been associated with both allergic contact dermatitis and bronchial asthma. Because there is currently no experimental data available on the sensitizing properties of persulfate salts (ammonium, sodium, and potassium persulfates), we determined their dermal sensitizing capacity, using the murine local lymph node assay (LLNA). MATERIAL AND METHODS: For three consecutive days, BALB/c mice were dermally treated ...
High human exposure to cobalt and other matals in Katanga, a mining area of the Democratic Rpublic of Congo KU Leuven
BACKGROUND AND OBJECTIVES: The human health impact of the historic and current mining and processing of non-ferrous metals in the African Copperbelt is not known. This study assessed the exposure to metals in the population of Katanga, in the south east of the Democratic Republic of Congo, using biomonitoring. METHODS: Seventeen metals (including Cd, Co, Cu, Pb, U) and non-metals (including As) were measured by ICP-MS in urine spot samples from ...
Time to Treatment as an Important Factor for the Response to Methotrexate in Juvenile Idiopathic Arthritis KU Leuven
OBJECTIVE: Methotrexate (MTX) is the most commonly used disease-modifying antirheumatic drug in juvenile idiopathic arthritis (JIA). Currently, individual response to MTX cannot be reliably predicted. Identification of clinical and genetic factors that influence the response to MTX could be helpful in realizing the optimal treatment for individual patients. METHODS: A cohort of 128 JIA patients treated with MTX were studied retrospectively. ...
Do Nanomedicines Require Novel Safety Assessments to Ensure their Safety for Long-Term Human Use? KU Leuven
Nanomaterials have different chemical, physical and biological characteristics than larger materials of the same chemical composition. These differences give nanotechnology a double identity: their use implies novel and interesting medical and/or industrial applications but also potential danger for human and environmental health. Here, we briefly review the most important types of nanomaterials, the difficulties in assessing safety or toxicity, ...
Communicative aspects of definitions in classroom interaction: Learning to define in class for first and second language learners. Vrije Universiteit Brussel
This paper studies the interactive structure and the interactive meaning of definitions in primary school classroom interaction. The classes that were chosen are classes which consisted solely or for a large part of second language learners, as definitions might have a special importance for them in their second language acquisition. Three categories of definitions will be analyzed: teacher definitions, pupil definitions and jointly formulated ...
The unbearable heaviness of myth Vrije Universiteit Brussel
Induction of IL-6 and inhibition of IL-8 secretion in the human airway cell line CALU-3 by urban particulate matter collected with a modified method of PM sampling KU Leuven
Exposure to particulate matter (PM) induces inflammatory cytokines. In the present study, we evaluated the secretion of IL-6 and IL-8 by an airway cell line exposed to PM with a mean aerodynamic size equal to or less than 10 or 2.5 microm (PM10 and PM2.5, respectively) collected in Mexico City, using a modified high-volume sampling method avoiding the use of solvents or introducing membrane components into the samples. PM was collected on ...