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See detailReview of Stuart Parker, Reflective Teaching and the Postmodern World.
Biesta, Gert UL

in Journal of Curriculum Studies (2000), 32(1), 124-128

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See detailEvaluation of RDS/Peripherin and ROM1 as candidate genes in generalised progressive retinal atrophy and exclusion of digenic inheritance
Runte, Maren UL; Dekomien, Gabriele; Epplen, Jörg T

in Animal Genetics (2000), 31(3), 223-227

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See detailLogical foundation of fuzzy preferential systems with application to the electre decision aid methods
Bisdorff, Raymond UL

in Computers and Operations Research (2000), 27(7-8), 673-687

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See detailLow-Complexity Estimators for Distributed Sources
Bengtsson, Mats; Ottersten, Björn UL

in IEEE Transactions on Signal Processing (2000), 48(8), 21852194

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See detailDer wintschaffene (wetterwendische) Christus und die Transparenz der Dichtung in Gottfrieds von Straßburg ‚Tristan‘
Dembeck, Till UL

in Zeitschrift für Germanistik. Neue Folge (2000), 10

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See detailIdentität und Äquilibration. Von Metaphern und Goldwaagen bei Heinrich von Kleist
Mein, Georg UL

in Kleist-Jahrbuch (2000)

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See detailAre You Ready for the 21st Century? Quality in English Language Teaching
Weber, Jean-Jacques UL; Horner, Kristine

in Praxis des Neusprachlichen Unterrichts (2000), 47

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See detailSimulación Numérica de la Combustión en Lecho Estacionario
Peters, Bernhard UL

in Ingenieria Quimica -Madrid- (2000), 366

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See detailEmploi et chômage (1994-1999)»,
Fehlen, Fernand UL; Pigeron-Piroth, Isabelle UL

in Bulletin du STATEC. Luxembourg. Service Central de la Statistique et des Etudes Economiques (2000), 3

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See detailPestalozzis Weg vom politischen zum christlichen Republikanismus
Tröhler, Daniel UL

in Schweizerische Zeitschrift für Geschichte (2000), 50

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See detailThe Global Community, Religion, and Education: The Modernity of Dewey's Social Philosophy
Tröhler, Daniel UL

in Studies in Philosophy & Education (2000), 19(1–2), 159-186

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See detailCharge-state evolution of highly charged ions transmitted through microcapillaries
Tokesi, K.; Wirtz, Ludger UL; Lemell, C. et al

in Physical Review. A (2000), 61(2),

The charge-state evolution of highly charged ions transmitted through microcapillaries is studied theoretically by a classical trajectory Monte Carlo simulation.: The interaction of highly charged ions ... [more ▼]

The charge-state evolution of highly charged ions transmitted through microcapillaries is studied theoretically by a classical trajectory Monte Carlo simulation.: The interaction of highly charged ions with the internal surface of the capillary is treated within the framework of dielectric response theory. We analyze the distance of closest approach and the angular distributions of the highly charged ions at the exit of the microcapillary. We find the charge-state fraction of transmitted N6+ projectiles, in: good agreement with first measurements. Moreover, our calculations indicate that grazing collisions with the microcapillary surface hold the promise of direct observation of charge transfer and hollow-atom formation at a large distance from the surface. [less ▲]

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See detailFrom parathyroid to thymus, via glial cells.
Balling, Rudi UL; Erben, R. G.

in Nature Medicine (2000), 6(8), 860-1

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See detailIntegrated photometer with porous silicon interference filters
Hunkel, D.; Marso, Michel UL; Butz, R. et al

in Materials Science and Engineering: A: Structural Materials: Properties, Microstructures and Processing (2000), B69-70((2000)), 100-103

Porous silicon transmission interference filters with laterally varying transmission wavelengths are used to manufacture a photometer. Because of the linear varying transmission characteristic of the ... [more ▼]

Porous silicon transmission interference filters with laterally varying transmission wavelengths are used to manufacture a photometer. Because of the linear varying transmission characteristic of the filter it is possible to measure, beyond small regions of the porous layer, the correlated spectral photo current. It is therefore necessary to bring up a series of ohmic metal contacts along the porous filter. Between two neighbouring contacts one can measure the spectral photo current of the transmission wavelength at this specific point of the surface. By measuring multiple pairs of contacts, the whole spectrum between 400 and 1100 nm wavelength can be recorded. First results of the resolution capability and sensitivity are demonstrated. [less ▲]

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See detailAntiferroelectric liquid crystals with 45° tilt - a new class of promising electro-optic materials
D’havé, K.; Dahlgren, A; Rudquist, Per et al

in Ferroelectrics (2000), 244

Antiferroelectric liquid crystals with a tilt angle of 45 degrees have very interesting optical properties, which seem to have been overlooked so far perhaps because such materials have hardly been ... [more ▼]

Antiferroelectric liquid crystals with a tilt angle of 45 degrees have very interesting optical properties, which seem to have been overlooked so far perhaps because such materials have hardly been available. We have prepared a four-component mixture of partially fluorinated compounds with a SmC/sub n/* phase in the interval between 27.4 degrees C and 121.6 degrees C, in which the tilt angle theta saturates at 45 degrees for T<or=80 degrees C, and we investigate the optical properties, theoretically and experimentally. One of the surprising features of 45 degree materials is that they permit a remarkably high contrast by virtue of an excellent dark-state, in spite of the fact that AFLC materials are notoriously difficult to align. This is because a 45 degrees AFLC turns out to be (negatively) uniaxial instead of biaxial. We describe these properties and propose a number of potentially interesting new applications, including a polarizer-free display mode and a three-level ``phase-only'' modulator. [less ▲]

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See detailGenetic analysis of the alpha2-macroglobulin gene in early- and late-onset Parkinson's disease.
Krüger, Rejko UL; Menezes-Saecker, A. M.; Schols, L. et al

in Neuroreport (2000), 11(11), 2439-42

Recent association studies investigating polymorphisms in the alpha2-macroglobulin (A2M) gene provided evidence for an involvement of this protease inhibitor in the pathogenesis of Alzheimer's disease (AD ... [more ▼]

Recent association studies investigating polymorphisms in the alpha2-macroglobulin (A2M) gene provided evidence for an involvement of this protease inhibitor in the pathogenesis of Alzheimer's disease (AD). The partially overlapping pathology between AD and Parkinson's disease (PD) led us to investigate the role of A2M in PD. We performed association studies in a large sample of 328 German PD patients and 322 closely matched healthy controls. Analyzing the Val1000Ile polymorphism and a pentanucleotide deletion in the 5' splice site of exon 18 of the A2M gene we found an excess of homozygosity for the A2M deletion in early-onset PD (EOPD) patients (age at onset < 50 years) compared to late-onset PD (LOPD) patients (age at onset > 50 years; p = 0.008, p(p)c = 0.064, chi2 = 7.017). Therefore our data might indicate an age at onset modulating effect of the homozygous A2M deletion in PD. [less ▲]

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See detailThe IL-10 gene is not involved in the predisposition to inflammatory bowel disease.
Klein, Wolfram; Tromm, Andreas; Griga, Thomas et al

in Electrophoresis (2000), 21(17), 3578-3582

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See detailContributions of leukemia inhibitory factor receptor and oncostatin M receptor to signal transduction in heterodimeric complexes with glycoprotein 130
Hermanns, H. M.; Radtke, S.; Haan, Claude UL et al

in Journal of Immunology (2000), 163(12), 6651-8

Leukemia inhibitory factor (LIF), cardiotrophin-1, ciliary neurotrophic factor, and oncostatin M (OSM) lead to heterodimerization of LIF receptor (LIFR) or the OSM-specific receptor (OSMR) with ... [more ▼]

Leukemia inhibitory factor (LIF), cardiotrophin-1, ciliary neurotrophic factor, and oncostatin M (OSM) lead to heterodimerization of LIF receptor (LIFR) or the OSM-specific receptor (OSMR) with glycoprotein (gp) 130, the common receptor subunit for IL-6-type cytokines. Thereby intracellular signaling via Janus kinases (Jaks) and STAT transcription factors is initiated. We investigated the contributions of LIFR and OSMR to signal transduction in the context of heterodimers with gp130. Chimeric receptors based on the extracellular parts of the IL-5R alpha- and beta-chains were generated, allowing the induced heterodimerization of two different cytoplasmic tails. Our studies demonstrate that upon heterodimerization with the gp130 cytoplasmic region, the cytoplasmic parts of both LIFR and OSMR were critical for activation of an acute phase protein promoter in HepG2 hepatoma cells. The membrane-proximal region of LIFR or OSMR was crucial for the ability of such receptor complexes to induce DNA binding of STAT1 and STAT3 in COS-7 cells. Membrane-distal regions of LIFR and OSMR contributed to STAT activation even in the absence of gp130 STAT recruitment sites. We further show that the Janus kinases Jak1 and Jak2 constitutively associated with receptor constructs containing the cytoplasmic part of LIFR, OSMR, or gp130, respectively. Homodimers of the LIFR or OSMR cytoplasmic regions did not elicit responses in COS-7 cells but did in HepG2 cells and in MCF-7 breast carcinoma cells. Thus, in spite of extensive functional similarities, differential signaling abilities of gp130, LIFR, and OSMR may become evident in a cell-type-specific manner. [less ▲]

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See detailSandra Kobelt: Nonkonformist am Pranger: Johannes Frey (1743-1800)
Tröhler, Daniel UL

in Neue Pestalozzi-Blätter (2000), 6(1), 37-39

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See detailTagungsbericht Unternehmensrecht und Internet
Zetzsche, Dirk Andreas UL

in Multimedia und Recht (2000)

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See detailSOCS3 exerts its inhibitory function on interleukin-6 signal transduction through the SHP2 recruitment site of gp130.
Schmitz, J.; Weissenbach, M.; Haan, Serge UL et al

in Journal of Biological Chemistry (2000), 275(17), 12848-56

Interleukin-6 is involved in the regulation of many biological activities such as gene expression, cell proliferation, and differentiation. The control of the termination of cytokine signaling is as ... [more ▼]

Interleukin-6 is involved in the regulation of many biological activities such as gene expression, cell proliferation, and differentiation. The control of the termination of cytokine signaling is as important as the regulation of initiation of signal transduction pathways. Three families of proteins involved in the down-regulation of cytokine signaling have been described recently: (i) SH2 domain-containing protein-tyrosine phosphatases (SHP), (ii) suppressors of cytokine signaling (SOCS), and (iii) protein inhibitors of activated STATs (PIAS). We have analyzed the interplay of two inhibitors in the signal transduction pathway of interleukin-6 and demonstrate that the tyrosine phosphatase SHP2 and SOCS3 do not act independently but are functionally linked. The activation of one inhibitor modulates the activity of the other; Inhibition of SHP2 activation leads to increased SOCS3-mRNA levels, whereas increased expression of SOCS3 results in a reduction of SHP2 phosphorylation after activation of the interleukin-6 signal transduction pathway. Furthermore, we show that tyrosine 759 in gp130 is essential for both SHP2 and SOCS3 but not for SOCS1 to exert their inhibitory activities on interleukin-6 signal transduction. Besides SHP2, SOCS3 also interacts with the Tyr(P)-759 peptide of gp130. Taken together, our results suggest differences in the function of SOCS1 and SOCS3 and a link between SHP2 and SOCS3. [less ▲]

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See detailExtrapyramidal motor signs in degenerative ataxias.
Schols, L.; Peters, S.; Szymanski, S. et al

in Archives of neurology (2000), 57(10), 1495-500

BACKGROUND: Extrapyramidal motor signs (EPS) are well-known symptoms of degenerative ataxia. However, little is known about frequency and appearance of EPS in subtypes of ataxia. METHODS: We characterized ... [more ▼]

BACKGROUND: Extrapyramidal motor signs (EPS) are well-known symptoms of degenerative ataxia. However, little is known about frequency and appearance of EPS in subtypes of ataxia. METHODS: We characterized 311 patients with ataxia clinically and genetically. Course of the disease and EPS were investigated according to a standardized protocol. Diagnostic and prognostic impact of EPS in subtypes of ataxia was analyzed by Kaplan-Meier plots. RESULTS: Extrapyramidal motor signs occurred in all forms of ataxia, but frequency and type of EPS varied between genetically and clinically defined subtypes. Postural tremor in hereditary ataxias was typical for spinocerebellar ataxia type 2 (SCA2). Dystonia was generally rare in ataxias, but, if present, suggested SCA3. We observed a parkinsonian variant of SCA3 in which parkinsonism was present in the beginning of the disease and responded well to levodopa therapy, leading to diagnostic confusion. Parkinsonism in SCA3 was independent of CAG repeat length but ran in families, suggesting modifying genes. In idiopathic sporadic cerebellar ataxia (ISCA), EPS are more frequent in late-onset than in early-onset forms. In 50% of ISCA patients with parkinsonism, the diagnosis of multiple system atrophy remained questionable because of normal autonomic function. CONCLUSIONS: Extrapyramidal motor signs can help to predict the genetic subtype of ataxia. Extrapyramidal motor signs were more frequent in genetic subtypes in which basal ganglia affection has been demonstrated by postmortem studies. However, no type of EPS was specific for an underlying mutation. In ISCA, EPS are an adverse prognostic factor. Parkinsonism is especially associated with a more rapid course of the disease. Arch Neurol. 2000;57:1495-1500 [less ▲]

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See detailLarge torsion subgroups of split Jacobians of curves of genus two or three
Howe, Everett; Leprévost, Franck UL; Poonen, Björn

in Forum Mathematicum (2000), 12

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See detailModel selection for regression on a fixed design
Baraud, Yannick UL

in Probab. Theory Related Fields (2000), 117(4), 467--493

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See detailCoherent state embeddings, polar divisors and Cauchy formulas
Berceanu, Stefan; Schlichenmaier, Martin UL

in Journal of Geometry and Physics (2000), 34

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See detailInitial-irregular oblique derivative problems for nonlinear parabolic complex equations of second order with measurable coefficients
Wen, Guochun; Zou, Benteng UL

in Nonlinear Analysis: Theory, Methods and Applications (2000)

In this paper, initial-irregular oblique derivative boundary value problems for nonlinear and non-divergence parabolic complex equations of second order in multiply connected domains are discussed, where ... [more ▼]

In this paper, initial-irregular oblique derivative boundary value problems for nonlinear and non-divergence parabolic complex equations of second order in multiply connected domains are discussed, where coefficients of equations are measurable. Firstly, the uniqueness of solutions for the above problems is verified, and then a priori estimates of solutions for the problems are given. Finally, by using the above estimates and the Leray-Schauder theorem, the existence of solutions of the initial-boundary value problems is proved. [less ▲]

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See detailScreening for dysmorphological abnormalities--a powerful tool to isolate new mouse mutants.
Fuchs, H.; Schughart, K.; Wolf, E. et al

in Mammalian Genome (2000), 11(7), 528-30

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See detailGeneralized progressive retinal atrophy of Sloughi dogs is due to an 8-bp insertion in exon 21 of the PDE6B gene
Dekomien, Gabriele; Runte, Maren UL; Goedde, René et al

in CytoGenetics and Cell Genetics (2000), 90(3-4), 261-267

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See detailVariation and trends in incidence of childhood diabetes in Europe
De Beaufort, Carine UL

in Lancet (2000), 355

BACKGROUND: To study the epidemiology of childhood-onset type 1 insulin-dependent diabetes in Europe, the EURODIAB collaborative group established in 1988 prospective geographically-defined registers of ... [more ▼]

BACKGROUND: To study the epidemiology of childhood-onset type 1 insulin-dependent diabetes in Europe, the EURODIAB collaborative group established in 1988 prospective geographically-defined registers of new cases diagnosed under 15 years of age. This report is based on 16 362 cases registered during the period 1989-94 by 44 centres representing most European countries and Israel and covering a population of about 28 million children. METHODS: Multiple sources of ascertainment were used in most centres to validate the completeness of registration by the capture-recapture method. Trends in incidence during the period were analysed by Poisson regression, the data from centres within each country being pooled. FINDINGS: The standardised average annual incidence rate during the period 1989-94 ranged from 3.2 cases per 100000 per year in the Former Yugoslav Republic of Macedonia to 40.2 cases per 100000 per year in two regions of Finland. By pooling over all centres, the annual rate of increase in incidence was 3.4% (95% CI 2.5-4.4%), but in some central European countries it was more rapid than this. Pooled over centres and sexes, the rates of increase were 6.3% (4.1-8.5%) for children aged 0-4 years, 3.1% (1.5-4.8%) for 5-9 years, and 2.4% (1.0-3.8%) for 10-14 years. INTERPRETATION: The results confirm a very wide range of incidence rates within Europe and show that the increase in incidence during the period varied from country to country. The rapid rate of increase in children aged under 5 years is of particular concern. PMID: 10752702 [PubMed - indexed for MEDLI [less ▲]

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See detailAn MMP-9 mutant without gelatinolytic activity as a novel TIMP-1-antagonist
Roeb, E.; Behrmann, Iris UL; Grötzinger, J. et al

in FASEB Journal (2000), 14(12), 1671-3

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See detailLarge-scale N-ethyl-N-nitrosourea mutagenesis of mice--from phenotypes to genes.
Rathkolb, B.; Fuchs, E.; Kolb, H. J. et al

in Experimental Physiology (2000), 85(6), 635-44

The most important tool for obtaining insight into the function of genes is the use of mutant model organisms. Homologous recombination in embryonic stem cells allows the systematic production of mouse ... [more ▼]

The most important tool for obtaining insight into the function of genes is the use of mutant model organisms. Homologous recombination in embryonic stem cells allows the systematic production of mouse mutants for any gene that has been cloned. Gene trap strategies have been designed to interrupt even unknown genes which are tagged by the inserted vector and can be characterised structurally and functionally. Complementary to such 'gene-driven' approaches, 'phenotype-driven' approaches are necessary to identify new genes or gene products through a search for mutants with specific defects, uncovering the function of genetic pathways in physiological and pathological processes. Mutagenesis using the alkylating agent N-ethyl-N-nitrosourea (ENU) is a powerful approach for the production of such mouse mutants. Since ENU induces mainly point mutations in premeiotic spermatogonia, this strategy allows the production of multiple alleles of a particular gene, which is pivotal for a fine tuned analysis of its function. [less ▲]

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See detailDécision de la Cour de cassation, 1ère Civ., 22 juin 1999
Cuniberti, Gilles UL

in Revue Critique de Droit International Privé (2000)

Connexité internationale

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See detailGrowing an actin gel on spherical surfaces.
Noireaux, V.; Golsteyn, R. M.; Friederich, Evelyne UL et al

in Biophysical journal (2000), 78(3), 1643-54

Inspired by the motility of the bacteria Listeria monocytogenes, we have experimentally studied the growth of an actin gel around spherical beads grafted with ActA, a protein known to be the promoter of ... [more ▼]

Inspired by the motility of the bacteria Listeria monocytogenes, we have experimentally studied the growth of an actin gel around spherical beads grafted with ActA, a protein known to be the promoter of bacteria movement. On ActA-grafted beads F-actin is formed in a spherical manner, whereas on the bacteria a "comet-like" tail of F-actin is produced. We show experimentally that the stationary thickness of the gel depends on the radius of the beads. Moreover, the actin gel is not formed if the ActA surface density is too low. To interpret our results, we propose a theoretical model to explain how the mechanical stress (due to spherical geometry) limits the growth of the actin gel. Our model also takes into account treadmilling of actin. We deduce from our work that the force exerted by the actin gel on the bacteria is of the order of 10 pN. Finally, we estimate from our theoretical model possible conditions for developing actin comet tails. [less ▲]

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See detailMutations in ABC1 in Tangier disease and familial high-density lipoprotein deficiency
Brooks-Wilson, A.; Marcil, M.; Clee, S. M. et al

in Nature Genetics (1999), 22(4), 336-45

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See detailCharacterization of some aggregation functions stable for positive linear transformations
Marichal, Jean-Luc UL; Mathonet, Pierre UL; Tousset, Eric

in Fuzzy Sets and Systems (1999), 102(2), 293-314

This paper deals with the characterization of some classes of aggregation functions often used in multicriteria decision making problems. The common properties involved in these characterizations are ... [more ▼]

This paper deals with the characterization of some classes of aggregation functions often used in multicriteria decision making problems. The common properties involved in these characterizations are "increasing monotonicity" and "stability for positive linear transformations". Additional algebraic properties related to associativity allow to completely specify the functions. [less ▲]

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See detailEffect of familiarity on the processing of human faces
Dubois, S; Rossion, B; Schiltz, Christine UL et al

in NeuroImage (1999), 9(3), 278289

Most brain imaging studies on face perception have investigated the processing of unknown faces and addressed mainly the question of specific face processing in the human brain. The goal of this study was ... [more ▼]

Most brain imaging studies on face perception have investigated the processing of unknown faces and addressed mainly the question of specific face processing in the human brain. The goal of this study was to highlight the effects of familiarity on the visual processing of faces. Using [15O]water 3D Positron Emission Tomography, regional cerebral blood flow distribution was measured in 11 human subjects performing an identical task (gender categorization) on both unknown and known faces. Subjects also performed two control tasks (a face recognition task and a visual pattern discrimination task). They were scanned after a training phase using videotapes during which they had been familiarized with and learned to recognize a set of faces. Two major results were obtained. On the one hand, we found bilateral activations of the fusiform gyri in the three face conditions, including the so-called fusiform-face area, a region in the right fusiform gyrus specifically devoted to face processing. This common activation suggests that different cognitive tasks performed on known and unknown faces require the involvement of this fusiform region. On the other hand, specific regional cerebral blood flow changes were related to the processing of known and unknown faces. The left amygdala, a structure involved in implicit learning of visual representations, was activated by the categorization task on unknown faces. The same task on known faces induced a relative decrease of activity in early visual areas. These differences between the two categorization tasks reveal that the human brain processes known and unknown faces differently. [less ▲]

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See detailA characterization of the ordered weighted averaging functions based on the ordered bisymmetry property
Marichal, Jean-Luc UL; Mathonet, Pierre UL

in IEEE Transactions on Fuzzy Systems (1999), 7(1), 93-96

This paper deals with a characterization of a class of aggregation operators. This class concerns operators which are symmetric, increasing, stable for the same positive linear transformations and present ... [more ▼]

This paper deals with a characterization of a class of aggregation operators. This class concerns operators which are symmetric, increasing, stable for the same positive linear transformations and present a property close to the bisymmetry property: the ordered bisymmetry property. It is proved that the class investigated contains exactly the ordered weighted averaging operators (OWA) introduced by Yager in 1988. [less ▲]

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See detailNeuronal mechanisms of perceptual learning: Changes in human brain activity with training in orientation discrimination
Schiltz, Christine UL; Bodart, M. J; Dubois, S et al

in NeuroImage (1999), 9(1), 46-62

Using 15O-water 3D positron emission tomography, regional cerebral blood flow was measured twice in six human subjects: before and after extensive training in orientation discrimination. In each session ... [more ▼]

Using 15O-water 3D positron emission tomography, regional cerebral blood flow was measured twice in six human subjects: before and after extensive training in orientation discrimination. In each session subjects performed two orientation discrimination tasks, during which they discriminated the orientation of a grating at either the trained or untrained reference orientation, and a control task, during which they detected a randomly textured pattern. By comparing the discrimination to the detection tasks, we observed a main effect of task bilaterally in the posterior occipital cortex, extending into the left posterior fusiform gyrus and the right inferior occipital gyrus, bilaterally in the intraparietal sulcus, as well as in the cerebellum, thalamus, and brainstem. When we compared the activation pattern before and after the training period, all the changes observed were activity decreases. The nonspecific changes, which were not related to the orientation used during the training, were situated in the cerebellum and bilaterally in the extrastriate visual cortex. The orientation-specific changes, on the other hand, were restricted to the striate and extrastriate visual cortex, more precisely the right calcarine sulcus, the left lingual gyrus, the left middle occipital, and the right inferior occipital gyrus. These findings confirm our hypothesis concerning the existence of learning related changes at early levels of visual processing in human adults and suggest that mechanisms resulting in neuronal activity decreases might be involved in the present kind of learning. [less ▲]

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See detailLes représentations pré-algébriques des élèves sortant de l'enseignement primaire
DEMONTY, I; Vlassis, Joëlle UL

in Informations Pédagogiques (1999), 47

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See detailAn InAlAs-InGaAs OPFET with Responsivity Above 200 A/W at 1.3 µm Wavelength
Marso, Michel UL; Gersdorf, P.; Fox, A. et al

in IEEE Photonics Technology Letters (1999), 11

The optoelectronic dc and RF behavior of an InAlAs–InGaAs optically controlled field-effect transistor based on a high electron mobility transistor layer structure is investigated at 1.3- um wavelength ... [more ▼]

The optoelectronic dc and RF behavior of an InAlAs–InGaAs optically controlled field-effect transistor based on a high electron mobility transistor layer structure is investigated at 1.3- um wavelength light. The device is backside-illuminated to increase the responsivity. A transistor with 0.3-u m gate length and an active area of 50 x 50 u m2 exhibits a responsivity of 235 A/W, at 11- W incident optical power. The photoconductive response is higher than for an metal–semiconductor–metal photodetector with the same InGaAs absorption layer thickness up to 10 GHz. [less ▲]

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See detailPeter Shor, prix Nevanlinna 1998
Leprévost, Franck UL

in Gazette des Mathématiciens (1999), 81

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See detailAmerikanisierung des Raumes? Muster und Metapher spätindustrieller Stadt- und Raumentwicklung.
Hesse, Markus UL; Schmitz, Stefan

in Geographische Rundschau (1999), 51(10), 576-578

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See detailAspekte des Moralischen im Nibelungenlied
Sieburg, Heinz UL

in SVMMA CUM PROBITATE. Mélanges offert à Jean-Paul Harpes par ses collègues et amis. Publications du Centre Universitaire du Luxembourg 199 (1999)

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See detailPax1 and Pax9 synergistically regulate vertebral column development.
Peters, H.; Wilm, B.; Sakai, N. et al

in Development (1999), 126(23), 5399-408

The paralogous genes Pax1 and Pax9 constitute one group within the vertebrate Pax gene family. They encode closely related transcription factors and are expressed in similar patterns during mouse ... [more ▼]

The paralogous genes Pax1 and Pax9 constitute one group within the vertebrate Pax gene family. They encode closely related transcription factors and are expressed in similar patterns during mouse embryogenesis, suggesting that Pax1 and Pax9 act in similar developmental pathways. We have recently shown that mice homozygous for a defined Pax1 null allele exhibit morphological abnormalities of the axial skeleton, which is not affected in homozygous Pax9 mutants. To investigate a potential interaction of the two genes, we analysed Pax1/Pax9 double mutant mice. These mutants completely lack the medial derivatives of the sclerotomes, the vertebral bodies, intervertebral discs and the proximal parts of the ribs. This phenotype is much more severe than that of Pax1 single homozygous mutants. In contrast, the neural arches, which are derived from the lateral regions of the sclerotomes, are formed. The analysis of Pax9 expression in compound mutants indicates that both spatial expansion and upregulation of Pax9 expression account for its compensatory function during sclerotome development in the absence of Pax1. In Pax1/Pax9 double homozygous mutants, formation and anteroposterior polarity of sclerotomes, as well as induction of a chondrocyte-specific cell lineage, appear normal. However, instead of a segmental arrangement of vertebrae and intervertebral disc anlagen, a loose mesenchyme surrounding the notochord is formed. The gradual loss of Sox9 and Collagen II expression in this mesenchyme indicates that the sclerotomes are prevented from undergoing chondrogenesis. The first detectable defect is a low rate of cell proliferation in the ventromedial regions of the sclerotomes after sclerotome formation but before mesenchymal condensation normally occurs. At later stages, an increased number of cells undergoing apoptosis further reduces the area normally forming vertebrae and intervertebral discs. Our results reveal functional redundancy between Pax1 and Pax9 during vertebral column development and identify an early role of Pax1 and Pax9 in the control of cell proliferation during early sclerotome development. In addition, our data indicate that the development of medial and lateral elements of vertebrae is regulated by distinct genetic pathways. [less ▲]

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See detailLe gage-espèces (de l’accession en matière monétaire)
Cuniberti, Gilles UL

in Petites Affiches, la Loi (1999)

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See detailEffects of nicotine administered via a transdermal delivery system on vigilance: a repeated measure study.
Mancuso, Giovanna UL; Andres, P.; Ansseau, M. et al

in Psychopharmacology (1999), 142(1), 18-23

Fifteen 18- to 25-year-old male smokers were tested in a within-subjects design to determine the influence of a transdermal patch of 21 mg nicotine on vigilance. Subjects were tested on the RVIP test ... [more ▼]

Fifteen 18- to 25-year-old male smokers were tested in a within-subjects design to determine the influence of a transdermal patch of 21 mg nicotine on vigilance. Subjects were tested on the RVIP test (Rapid Visual Information Processing test) 1.30, 3.00 and 6.30 h after patch application, to verify the involvement of the dose of nicotine on the performance. This study confirms and extends the increasing effects of nicotine on vigilance previously found with orally and transdermally given nicotine. Moreover, it showed that such performance was independent of the time of nicotine absorption (1.30, 3.00 and 6.30 h after patch application), which suggests that a relatively low dose of nicotine suffices to activate vigilance processing. Regarding motor performance, no convincing effect of nicotine was observed on reaction time. [less ▲]

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See detailWess-Zumino-Witten-Novikov theory, Knizhnik-Zamolodchikov equations, and Krichever-Novikov algebras, I
Schlichenmaier, Martin UL; Sheinman, Oleg K.

in Russian Mathematical Surveys (1999), 54(1), 213-250

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See detailThreshold for potential sputtering of LiF
Hayderer, G.; Schmid, M.; Varga, P. et al

in Physical Review Letters (1999), 83(19), 3948-3951

We have measured total sputtering yields for impact of slow (less than or equal to 100 eV) singly and doubly charged ions on LiF. The minimum potential energy necessary to induce potential sputtering (PS ... [more ▼]

We have measured total sputtering yields for impact of slow (less than or equal to 100 eV) singly and doubly charged ions on LiF. The minimum potential energy necessary to induce potential sputtering (PS) from UF was determined to be about 10 eV. This threshold coincides with the energy necessary to produce a cold hole in the valence band of LiF by resonant neutralization. This allows the first unambiguous identification of PS induced by cold holes. Further stepwise increase of the sputtering yield with higher projectile potential energies provides evidence for additional defect-mediated sputtering mechanisms operative in alkali halides. [less ▲]

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See detailAppendice : quelques données statistiques
Fermigier, Stéphane; Leprévost, Franck UL; FIEKER, Claus

in Journal of Number Theory (1999), 78

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See detailSaar-Lor-Lux, un espace modèle pour l'intégration européenne?
Schulz, Christian UL

in Géographies. Bulletin de l'Association de Géographes Français (1999), 76(4), 397-407

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See detailFrauen- und Geschlechterforschung in der Themenselektion der "Zeitschrift für Päd­agogik
Priem, Karin UL

in Feministische Studien (1999), 17

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See detailAntenna Arrays for Communications
Ottersten, Björn UL; Swindlehurst, Andrew Lee

in IEEE Signal Processing Magazine (1999), 16(2), 2527

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See detailCohomologie de l'algèbre de Lie des opérateurs différentiels sur une variété à coefficients dans les fonctions
Poncin, Norbert UL

in Comptes Rendus de l'Académie des Sciences. Série I. Mathématique (1999), 328(9), 789--794

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See detailInterference filters from porous silicon with laterally varying wavelength of reflection
Hunkel, D.; Butz, R.; Arens-Fischer, R. et al

in Journal of Luminescence (1999), 80(1999), 133-136

Porous silicon reflection interference filters of Bragg type consists of up to 40 quarter wave layers with alternating high- and low-refraction index. The refraction index depends on the porosity of the ... [more ▼]

Porous silicon reflection interference filters of Bragg type consists of up to 40 quarter wave layers with alternating high- and low-refraction index. The refraction index depends on the porosity of the silicon. The reflection wavelength can vary over a wide range and depends on the thickness and refraction index of the porous layers. A laterally continuously varying wavelength with linear profile of the filter can be achieved by manipulating the porosity and thickness of the silicon in the lateral direction. Our approach is to vary the Fermi level laterally by applying a potential parallel to the surface of the wafer. The slope of the Fermi level is easily controlled by the magnitude of the potential. The lateral current density and thus the porosity and thickness is related to the potential difference between the laterally varying Fermi level and the potential induced by the counter electrode. This relation is the well-known current-voltage characteristic of a Silicon hydrofluoric acid contact. The linearity of the etch profile across the wafer is demonstrated and the properties of preliminary reflection filters are shown. [less ▲]

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See detailPsychologische Operationsvorbereitung Erwachsener
Vögele, Claus UL

in Hygiene und Medizin (1999), (24), 184-188

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See detailQuantitative measurement of proteins by western blotting with Cy5-coupled secondary antibodies.
Fradelizi, J.; Friederich, Evelyne UL; Beckerle, M. C. et al

in BioTechniques (1999), 26(3), 484-6488490

The concentration of proteins in cells is an important parameter that determines how a protein will interact with other proteins or pharmacological agents. Recent developments in Western blotting ... [more ▼]

The concentration of proteins in cells is an important parameter that determines how a protein will interact with other proteins or pharmacological agents. Recent developments in Western blotting techniques have now made this a method of choice to measure protein concentration in complex solutions such as total cell extracts. We show that detection of Cy5-coupled secondary antibodies by PhosphorImager analysis produces signals that approach linearity with respect to protein concentration over a 20-fold range. We used this technique to estimate cellular levels of zyxin, which is an important protein component of the actin cytoskeleton in mammalian cells. By producing specific protein standards based on sequences that are available from public databases, it is now possible to estimate the concentration of almost any protein by this technique. [less ▲]

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See detailDer »edle Unglückliche«. Fouqué über Kleist.
Amann, Wilhelm UL

in Brandenburger Kleist-Blätter (1999), 9

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See detailRobust Blind Second-Order Deconvolution
Gorokhov, Alexei; Kristensson, Martin; Ottersten, Björn UL

in IEEE Signal Processing Letters (1999), 6

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See detailPsychological and physiological reactivity to stress: an experimental study on bulimic patients, restrained eaters and controls
Tuschen-Caffier, Brunna; Vögele, Claus UL

in Psychotherapy & Psychosomatics (1999), 68

BACKGROUND: Binge eating behavior in bulimic patients is thought to play a crucial role in the regulation of psychophysiological arousal in stressful situations. Previous results suggest that ... [more ▼]

BACKGROUND: Binge eating behavior in bulimic patients is thought to play a crucial role in the regulation of psychophysiological arousal in stressful situations. Previous results suggest that interpersonal stress and achievement challenge are perceived as particularly stressful by bulimic individuals. It is not clear, however, whether bulimic individuals respond to stress with an increased desire to binge, and whether this increase is accompanied by higher psychophysiological reactivity compared to healthy controls. METHODS: Twenty-seven patients with bulimia nervosa (DSM-IV), 27 restrained eaters, and 27 controls participated in two experimental sessions in which continuous measures of heart rate, blood pressure, respiration rat e, and ecectrodermal activity were monitored under conditions of achievement challenge (mental arithmetic, Stroop test) and interpersonal stress provoking feelings of loneliness and social rejection (film, imagery task). Ratings of desire to binge, negative mood, and hunger were obtained between experimental trials. Groups were matched for age and body mass index. RESULTS: There was a marked difference in subjective ratings during interpersonal stress. Bulimic patients responded to the imagery task with increases in both desire to binge and hunger, whereas restrained eaters and controls showed no change. There were no substantial group differences in psychophysiological reactivity. CONCLUSIONS: The dissociation between emotional responses and physiological activation may have important therapeutic implications. [less ▲]

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See detailCadherin-11 is highly expressed in rhabdomyosarcomas and during differentiation of myoblasts in vitro.
Markus, M. A.; Reichmuth, C.; Atkinson, M. J. et al

in Journal of Pathology (1999), 187(2), 164-72

Rhabdomyosarcomas bear a morphological and genetic resemblance to developing skeletal muscle. Apart from myogenic marker genes (bHLH factors, myosin, actin), cell adhesion molecules such as N-cadherin and ... [more ▼]

Rhabdomyosarcomas bear a morphological and genetic resemblance to developing skeletal muscle. Apart from myogenic marker genes (bHLH factors, myosin, actin), cell adhesion molecules such as N-cadherin and N-CAM have been reported to be expressed both in rhabdomyosarcomas and during myogenesis. The present study demonstrates the expression of another cadherin, cadherin-11, in rhabdomyosarcomas and during differentiation of myoblasts in vitro: cadherin-11, a predominantly mesenchymal cell adhesion molecule, is highly expressed in embryonal rhabdomyosarcomas and alveolar rhabdomyosarcomas, which do not bear the Pax-3-FKHR fusion previously described. Cadherin-11 is down-regulated in normal skeletal muscle and after myotube formation in vitro. The results of this study suggest that cadherin-11 might be involved in myogenesis and that rhabdomyosarcomas may re-express or fail to down-regulate cadherin-11. Since alveolar rhabdomyosarcomas bearing the t(2;13) translocation do not express cadherin-11, it is postulated that Pax-3 and cadherin-11 might be linked and involved in the same myogenic pathway. [less ▲]

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See detailInterkulturelles Lernen. Eine Auseinandersetzung mit der Kritik an einem umstrittenen Konzept.
Hu, Adelheid UL

in Zeitschrift für Fremdsprachenforschung (1999), 10(2), 277-303

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See detailOperational semantics for MSC'96
Mauw, Sjouke UL; Reniers, M. A.

in Computer Networks & ISDN Systems (1999), 31(17), 1785-1799

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See detailIdentification of a Leu-lle internalization motif within the cytoplasmic domain of the leukaemia inhibitory factor receptor
Thiel, S.; Behrmann, Iris UL; Timmermann, A. et al

in Biochemical Journal (1999), 339 (Pt 1)

Leukaemia inhibitory factor (LIF) signals via a heterodimeric receptor complex comprised of the LIF receptor (LIFR) and the interleukin (IL)-6 signal transducer gp130. Upon binding to its cognate receptor ... [more ▼]

Leukaemia inhibitory factor (LIF) signals via a heterodimeric receptor complex comprised of the LIF receptor (LIFR) and the interleukin (IL)-6 signal transducer gp130. Upon binding to its cognate receptor LIF is internalized. In this study, we show that the LIFR is endocytosed independently of gp130. By using a heterochimaeric receptor system we identified a dileucine-based internalization motif within the cytoplasmic domain of the LIFR. Our findings suggest that a heterodimeric LIFR/gp130 complex and homodimeric gp130/gp130 complex are endocytosed via distinct internalization signals. [less ▲]

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See detailDiagnose der Posttraumatischen Belastungsstörung bei Bankangestellten nach einem Überfall
De Boer, Claudia; Steffgen, Georges UL; Bollendorff, Claude

in Arbeitsmedizin, Sozialmedizin, Umweltmedizin (1999), 33

Im Rahmen einer Informationsveranstaltung des arbeitsmedizinischen Dienstes des luxemburger Finanzdienstleistungssektors wurden 29 Bankangestellte, die Opfer von Überfällen waren, hinsichtlich ... [more ▼]

Im Rahmen einer Informationsveranstaltung des arbeitsmedizinischen Dienstes des luxemburger Finanzdienstleistungssektors wurden 29 Bankangestellte, die Opfer von Überfällen waren, hinsichtlich posttraumatischer Belastungsreaktionen untersucht. Ziel des Beitrages ist es, ein ökonomischen und rationelles Verfahren zur Diagnose der „Posttraumatischen Belastungsstörung“ vorzustellen. Die Diagnosen ergaben, dass über ein Drittel der Befragten (34,5%) als hoch belastet anzusehen sind. Diejenigen, die mehr als einen Banküberfall miterlebt haben, weisen dabei im Durchschnitt eine höhere Zahl an posttraumatischen Symptomen auf. Eine hohe Komorbidität der PTBS mit Somatisierungs- und Angstreaktionen ist ebenfalls zu verzeichnen. Die Befunde belegen zudem, dass der auf Grundlage des „Diagnostischen Interviews bei Psychischen Störungen“ entwickelte Diagnose-Fragebogen sich als nützliches sowie aussagekräftiges Verfahren erweist. Weitergehende Analysen und Erprobungen sind jedoch erforderlich. Aufgrund der Ergebnisse der Untersuchung wurde für den luxemburgischen Bankensektor ein umfassendes Präventionsprogramm zu PTBS etabliert. [less ▲]

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See detailCoupling of insect antennae to field-effect transistors for biochemical sensing
Schroth, P.; Schöning, M. J.; Schütz, S. et al

in Electrochimica Acta (1999), 44(1999), 3821-3826

A bioelectronic interface based on the coupling of an intact insect antenna to a field-e effct transistor (FET) has been realised in a whole-beetle BioFET (Biologically sensitive FET) and an isolated ... [more ▼]

A bioelectronic interface based on the coupling of an intact insect antenna to a field-e effct transistor (FET) has been realised in a whole-beetle BioFET (Biologically sensitive FET) and an isolated-antenna BioFET configuration. The intrinsic BioFET characteristics, such as current-voltage curves, transconductance and signal-to-noise ratio clearly depend on the chip layout. Therefore, the experiments were performed with three di erent gate geometries: linear shape (5 um x 100 um), U shape (5 um x 1000 um) and meander shape (10 um x 6000 um). The BioFET allows the determination of the `green-leaf odour' Z-3-hexen-l-ol down to the low ppb concentration range. Thus, the detection of plant damages is possible with this novel kind of biosensor. [less ▲]

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See detailNumerical simulation of the motion and combustion of granular material.
Peters, Bernhard UL; Dziugys, Algis

in Industrial Heat Engineering (1999), 21

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See detailAnalysis of the parkin deletion in sporadic and familial Parkinson's disease. Short communication.
Krüger, Rejko UL; Vieira-Sacker, A. M.; Kuhn, W. et al

in Journal of Neural Transmission (1999), 106(2), 159-63

Recently a mutation in the parking gene has been identified as the cause for an autosomal-recessively inherited form of early onset Parkinson's disease (EOPD). The disease causing minimal deletion has ... [more ▼]

Recently a mutation in the parking gene has been identified as the cause for an autosomal-recessively inherited form of early onset Parkinson's disease (EOPD). The disease causing minimal deletion has been defined as a homozygous exon 4 loss in the parkin gene among Japanese patients. We investigated 140 sporadic and familial EOPD patients of German ancestry for the exon 4 deletion in the parkin gene. None of our patients exhibited a homozygous deletion of exon 4, suggesting a minor role of this mutation for EOPD in Caucasians. Nevertheless a detailed mutation analysis is warranted to explore the overall significance of mutations in the parkin gene in EOPD. [less ▲]

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See detailThe Effects of Local Scattering on Direction of Arrival Estimation with MUSIC
Asztély, David; Ottersten, Björn UL

in IEEE Transactions on Signal Processing (1999), 47(12), 32203234

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See detailDécision de la Cour de cassation, 1ère Civ., 24 novembre 1998
Cuniberti, Gilles UL

in Revue Critique de Droit International Privé (1999)

Conflit international de décisions.

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See detail«Ecrire le visage: Michaux, Blanchot, Klossowski, Genet»
Roelens, Nathalie UL

in Word & Image (1999)

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See detailA Subspace Method for Direction of Arrival Estimation of Uncorrelated Emitter Signals
Jansson, Magnus; Göransson, Bo; Ottersten, Björn UL

in IEEE Transactions on Signal Processing (1999), 47(4), 945956

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See detailThe EURODIAB Substudy 2 Study Group Vitamin D supplement in early childhood and risk for Type I (insulin-dependent) diabetes mellitus
De Beaufort, Carine UL

in Diabetologia (1999), 42(1), 51-55

The initiation of the immunopathogenetic process that can lead to Type I (insulin-dependent) diabetes mellitus in childhood probably occurs early in life. Studies in vitro have shown that vitamin D3 is ... [more ▼]

The initiation of the immunopathogenetic process that can lead to Type I (insulin-dependent) diabetes mellitus in childhood probably occurs early in life. Studies in vitro have shown that vitamin D3 is immunosuppressive or immunomodulating and studies in experimental models of autoimmunity, including one for autoimmune diabetes, have shown vitamin D to be protective. Seven centres in Europe with access to population-based and validated case registers of insulin-dependent diabetes patients participated in a case-control study focusing on early exposures and risk of Type I diabetes. Altogether data from 820 patients and 2335 control subjects corresponding to 85% of eligible patients and 76% of eligible control subjects were analysed. Questions focused on perinatal events and early eating habits including vitamin D supplementation. The frequency of vitamin D supplementation in different countries varied from 47 to 97% among control subjects. Vitamin D supplementation was associated with a decreased risk of Type I diabetes without indication of heterogeneity. The Mantel-Haenszel combined odds ratio was 0.67 (95% confidence limits: 0.53, 0.86). Adjustment for the possible confounders: a low birth weight, a short duration of breast feeding, old maternal age and study centre in logistic regression analysis did not affect the significant protective effect of vitamin D. In conclusion, this large multicentre trial covering many different European settings consistently showed a protective effect of vitamin D supplementation in infancy. The findings indicate that activated vitamin D might contribute to immune modulation and thereby protect or arrest an ongoing immune process initiated in susceptible people by early environmental exposures. [less ▲]

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See detailSpatio-temporal distribution of chondromodulin-I mRNA in the chicken embryo: expression during cartilage development and formation of the heart and eye.
Dietz, U. H.; Ziegelmeier, G.; Bittner, K. et al

in Developmental Dynamics : An Official Publication of the American Association of Anatomists (1999), 216(3), 233-43

To define genes specifically expressed in cartilage and during chondrogenesis, we compared by differential display-polymerase chain reaction (DD-PCR) the mRNA populations of differentiated sternal ... [more ▼]

To define genes specifically expressed in cartilage and during chondrogenesis, we compared by differential display-polymerase chain reaction (DD-PCR) the mRNA populations of differentiated sternal chondrocytes from chicken embryos with mRNA species modulated in vitro by retinoic acid (RA). Chondrocyte-specific gene expression is downregulated by RA, and PCR-amplified cDNAs from both untreated and RA-modulated cells were differentially displayed. Amplification products only from RNA of untreated chondrocytes were further analyzed, and a cDNA-fragment of the chondromodulin-I (ChM-I) mRNA was isolated. After obtaining full length cDNA clones, we have analyzed the mRNA expression patterns at different developmental stages by RNase protection assay and in situ hybridization. Analysis of different tissues and cartilage from 17-day-old chicken embryos showed ChM-I mRNA only in chondrocytes. During somitogenesis of the chicken embryo, ChM-I transcripts were detected in the notochord, the floor and the roof plate of the neural tube, and in cartilage precursor tissues such as the sclerotomes of the somites, the developing limbs, the pharyngeal arches, the otic vesicle, and the sclera. ChM-I continued to be expressed in differentiated cartilages derived from these tissues and also in noncartilaginous domains of the developing heart and retina. Thus, in the chicken, the expression of ChM-I is not restricted to mature cartilage but is already present during early development in precartilaginous tissues as well as in heart and eye. [less ▲]

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See detailReview of: Michael Toolan. Language in Literature
Weber, Jean-Jacques UL

in Social Semiotics (1999), 9

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See detailIncreased susceptibility to sporadic Parkinson's disease by a certain combined alpha-synuclein/apolipoprotein E genotype.
Krüger, Rejko UL; Vieira-Saecker, A. M.; Kuhn, W. et al

in Annals of neurology (1999), 45(5), 611-7

Parkinson's disease (PD) is one of the most common neurodegenerative disorders affecting about 1% of Western populations older than age 50. The pathological hallmark of PD are Lewy bodies, that is ... [more ▼]

Parkinson's disease (PD) is one of the most common neurodegenerative disorders affecting about 1% of Western populations older than age 50. The pathological hallmark of PD are Lewy bodies, that is, intracytoplasmic inclusion bodies in affected neurons of the substantia nigra. Recently, alpha-synuclein (alpha-SYN) has been identified as the main component of Lewy bodies in sporadic PD, suggesting involvement in neurodegeneration via protein accumulation. The partially overlapping pathology of PD and Alzheimer's disease, as well as striking structural similarities of alpha-SYN and apolipoprotein E, which is a major risk factor for late-onset Alzheimer's disease, prompted us to investigate the influence of different alpha-SYN and apolipoprotein E alleles for developing sporadic PD. We performed association studies in 193 German PD patients and 200 healthy control subjects matched for age, sex, and origin. A polymorphism in the promoter region of the alpha-SYN gene (NACP-Rep1) as well as of the closely linked DNA markers D4S1647 and D4S1628 revealed significant differences in the allelic distributions between PD patients and the control group. Furthermore, the Apo epsilon4 allele but not the Th1/E47 promoter polymorphism of the apolipoprotein E gene was significantly more frequent among early-onset PD patients (age at onset, <50 years) than in late-onset PD. Regarding the combination of the Apo epsilon4 allele and allele 1 of the alpha-SYN promoter polymorphism, a highly significant difference between the group of PD patients and control individuals has been found, suggesting interactions or combined actions of these proteins in the pathogenesis of sporadic PD. PD patients harboring this genotype have a 12.8-fold increased relative risk for developing PD during their lives. [less ▲]

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See detailMixture density estimation based on Maximum Likelihood and test statistics
Vlassis, Nikos UL; Papakonstantinou, G.; Tsanakas, P.

in Neural Processing Letters (1999), 9(1), 63-76

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See detailSoziale Netze im Alter: Selektivität in der Netzwerkgestaltung, wahrgenommene Qualität der Sozialbeziehungen und Affekt.
Ferring, Dieter UL; Filipp, Sigrun-Heide

in Zeitschrift für Entwicklungspsychologie und Padagogische Psychologie (1999), 31(3)

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See detail19 GHz vertical Si p-channel MOSFET
Moers, J.; Klaes, D.; Tönnesmann, A. et al

in Electronics Letters (1999), 35(1999), 239-240

Vertical Si p-MOSFETs with channel lengths of 100nm were fabricated using selective low pressure chemical vapour deposition (LPCVD) epitaxial growth and conventional i-line lithography. The layout, called ... [more ▼]

Vertical Si p-MOSFETs with channel lengths of 100nm were fabricated using selective low pressure chemical vapour deposition (LPCVD) epitaxial growth and conventional i-line lithography. The layout, called VOXFET, reduces gate to source/drain overlap capacitances, thus improving high speed applications. Transistors with a gate width of 12 um and gate oxide thickness of 10nm show transconductances gM of 200mS/mm and measured cutoff frequencies of fT = 8.7GHz and fMAX = 19.2 GHz. [less ▲]

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See detailA class of exactly solvable matrix models
del Sol Mesa, Antonio UL

in Journal of Mathematical Chemistry (1999)

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See detailLa cuisine bonifacienne. Un marqueur emblématique face au changement
Reckinger, Rachel UL

in Strade. Travaux du Centre d’Etudes Corses n° 7 (1999)

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See detailA Matrix Extension of the Cauchy-Schwarz Inequality
Tripathi, Gautam UL

in Economics Letters (1999), 63

Detailed reference viewed: 237 (3 UL)
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See detailIsolation of measles virus from a naturally-immune, asymptomatically re-infected individual
Vardas, E. A B; Kreis, Stephanie UL

in Journal of Clinical Virology (1999), 13(3), 173-179

Background: The changing epidemiology of measles with mild measles cases increasingly being recognised in previously-vaccinated individuals, suggests that more asymptomatic or subclinical cases might be ... [more ▼]

Background: The changing epidemiology of measles with mild measles cases increasingly being recognised in previously-vaccinated individuals, suggests that more asymptomatic or subclinical cases might be occurring. Although this has been clearly documented in previously-vaccinated individuals, the frequency of these asymptomatic infections in individuals previously naturally-infected with measles is not known. Also, it is not known whether these asymptomatic or mildly-infected individuals who do not display the full range of clinical signs of measles are capable of transmitting the virus to other susceptible persons. Objectives: To demonstrate the isolation of measles virus (MV) from previously, naturally-immune individuals asymptomatically infected with measles while in close contact with acutely infected family members and to document the secondary immune responses (SIR) associated with asymptomatic measles infection. Study Design: Throat swab and urine specimens from five acute measles cases and their family contacts, taken within 5 days of onset of rash in each acute case, were used to isolate MV by tissue culture. Positive tissue culture results were confirmed by indirect immunofluorescence (IF) staining. Measles specific antibodies (IgG and IgM), IgG urea avidity and measles-neutralising antibodies were measured in the one family (index family) where an asymptomatic measles infection of a contact was demonstrated. Results: The acutely infected patient in the index family (T1/96) had a measles-neutralising antibody titre of < 1:10, measles IgG urea avidity of 24% and MV was isolated and confirmed by IF from urine and throat swab specimens. T1/96 represents acute measles infection after primary vaccine failure because he had a clear history of being vaccinated against measles as a child. MV was also successfully isolated from throat swab and urine specimens from the other four acute cases and from the urine but not the throat swab of an asymptomatically infected family contact in the index family (mother, T2/96). T2/96 had a history of natural measles infection as a child approximately 50 years ago. In addition to detectable MV in urine this contact also had a SIR with a rise in measles specific neutralising antibody titre. No virus was isolated from the other contact in the index family (father, T3/96) or from the contacts of the other four acute cases examined. Conclusions: This is the first report of a confirmed asymptomatic MV infection, by MV isolation and IF testing and a concurrent SIR, in a previously naturally-immune contact of an acute case. The importance of these findings to the epidemiology and control of MV as well as the diagnostic value of MV urine isolation and IF confirmation for mild or asymptomatic cases must be examined further. [less ▲]

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See detailSugawara operators for higher genus Riemann surfaces
Schlichenmaier, Martin UL

in Reports on Mathematical Physics (1999), 43

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See detailDécision de la Cour de cassation, 1ère Civ., 2 mars 1999
Cuniberti, Gilles UL

in Juris-Classeur périodique (1999)

Portée des conventions bilatérales d’entraide judiciaire.

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See detailSelective effects of nicotine on attentional processes.
Mancuso, Giovanna UL; Warburton, D. M.; Melen, M. et al

in Psychopharmacology (1999), 146(2), 199-204

RATIONALE: It is now well established from electrophysiological and behavioural evidence that nicotine has effects on information processing. The results are usually explained either by a primary effect ... [more ▼]

RATIONALE: It is now well established from electrophysiological and behavioural evidence that nicotine has effects on information processing. The results are usually explained either by a primary effect of nicotine or by a reversal effect of a nicotine-induced, abstinence deficit. In addition, there is dispute about the cognitive processes underlying the changes in performance. METHODS: This study has approached the first question by using the nicotine patch, in order to administer nicotine chronically. In addition, we examined the effects of nicotine on attention with a selection of tests which assessed the intensity and selectivity features of attention, using the Random Letter Generation test, the Flexibility of Attention test and the Stroop test. RESULTS: Nicotine enhanced the speed of number generation and the speed of processing in both the control and interference conditions of the Stroop test. There were no effects on attentional switching of the Flexibility of Attention test. CONCLUSION: The results are consistent with the hypothesis that nicotine mainly improves the intensity feature of attention, rather than the selectivity feature. [less ▲]

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See detailOptimierung der Wickelgüte in der Spinnvliesproduktion mit Fuzzy Control
Voos, Holger UL; Hartel, Harald; Schmitt, Peter

in Automatisierungstechnische Praxis (1999), 41(6), 48-54

This work introduces a new control concept for a re-winder in the spunweb production. The rewinder serves to cut the spunweb-rolls into several rolls of customer-specified width. High customer demands ... [more ▼]

This work introduces a new control concept for a re-winder in the spunweb production. The rewinder serves to cut the spunweb-rolls into several rolls of customer-specified width. High customer demands toward roll quality were, so far, only met unsatisfactorily with PID control of the web-tension. The newly developed control concept uses fuzzy control. It provides a modular design and is specifically adjusted to the different states of the machine that occur during production. It was proven that this concept rapidly increases roll quality. The control concept is implemented on a PLC and used in industrial spunweb production at Freudenberg Vliesstoffe KG in Kaiserslautern. [less ▲]

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See detailDer Strukturwandel von Warenwirtschaft und Logistik und seine Bedeutung für die Stadtentwicklung.
Hesse, Markus UL

in Geographische Zeitschrift (1999), 87(3-4), 223-237

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See detailSpatial Signature Estimation for Uniform Linear Arrays with Unknown Receiver Gains and Phases
Asztély, David; Swindlehurst, Andrew Lee; Ottersten, Björn UL

in IEEE Transactions on Signal Processing (1999), 47(8), 21282138

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See detailBipolar ranking from pairwise fuzzy outrankings
Bisdorff, Raymond UL

in Belgian Journal of Operations Research, Statistics and Computer Science (1999), 37(4), 379-387

In this paper we propose to apply the concept of L-valued kernels to the problem of constructing a global ranking from a pairwise L-valued outranking relation defined on a set of decision alternatives as ... [more ▼]

In this paper we propose to apply the concept of L-valued kernels to the problem of constructing a global ranking from a pairwise L-valued outranking relation defined on a set of decision alternatives as encountered in the fuzzy preference modelling context. Our approach is based on a repetitive selection of best and worst candidates from sharpest L-valued or most credible initial and terminal kernels. A practical illustration will concern the global ranking of movies from individual evaluations of a given set of movie critics. [less ▲]

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