Browsing Complete repository Arts & humanities   Archaeology   Art & art history   Classical & oriental studies   History   Languages & linguistics   Literature   Performing arts   Philosophy & ethics   Religion & theology   Multidisciplinary, general & others Business & economic sciences   Accounting & auditing   Production, distribution & supply chain management   Finance   General management & organizational theory   Human resources management   Management information systems   Marketing   Strategy & innovation   Quantitative methods in economics & management   General economics & history of economic thought   International economics   Macroeconomics & monetary economics   Microeconomics   Economic systems & public economics   Social economics   Special economic topics (health, labor, transportation…)   Multidisciplinary, general & others Engineering, computing & technology   Aerospace & aeronautics engineering   Architecture   Chemical engineering   Civil engineering   Computer science   Electrical & electronics engineering   Energy   Geological, petroleum & mining engineering   Materials science & engineering   Mechanical engineering   Multidisciplinary, general & others Human health sciences   Alternative medicine   Anesthesia & intensive care   Cardiovascular & respiratory systems   Dentistry & oral medicine   Dermatology   Endocrinology, metabolism & nutrition   Forensic medicine   Gastroenterology & hepatology   General & internal medicine   Geriatrics   Hematology   Immunology & infectious disease   Laboratory medicine & medical technology   Neurology   Oncology   Ophthalmology   Orthopedics, rehabilitation & sports medicine   Otolaryngology   Pediatrics   Pharmacy, pharmacology & toxicology   Psychiatry   Public health, health care sciences & services   Radiology, nuclear medicine & imaging   Reproductive medicine (gynecology, andrology, obstetrics)   Rheumatology   Surgery   Urology & nephrology   Multidisciplinary, general & others Law, criminology & political science   Civil law   Criminal law & procedure   Criminology   Economic & commercial law   European & international law   Judicial law   Metalaw, Roman law, history of law & comparative law   Political science, public administration & international relations   Public law   Social law   Tax law   Multidisciplinary, general & others Life sciences   Agriculture & agronomy   Anatomy (cytology, histology, embryology...) & physiology   Animal production & animal husbandry   Aquatic sciences & oceanology   Biochemistry, biophysics & molecular biology   Biotechnology   Entomology & pest control   Environmental sciences & ecology   Food science   Genetics & genetic processes   Microbiology   Phytobiology (plant sciences, forestry, mycology...)   Veterinary medicine & animal health   Zoology   Multidisciplinary, general & others Physical, chemical, mathematical & earth Sciences   Chemistry   Earth sciences & physical geography   Mathematics   Physics   Space science, astronomy & astrophysics   Multidisciplinary, general & others Social & behavioral sciences, psychology   Animal psychology, ethology & psychobiology   Anthropology   Communication & mass media   Education & instruction   Human geography & demography   Library & information sciences   Neurosciences & behavior   Regional & inter-regional studies   Social work & social policy   Sociology & social sciences   Social, industrial & organizational psychology   Theoretical & cognitive psychology   Treatment & clinical psychology   Multidisciplinary, general & others      by title 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z or enter first few letters:    OK Showing results 72981 to 73000 of 113612     3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655     New learning in dementia: transfer and spontaneous use of learning in everyday life functioning. Two case studies.Bier, Nathalie; Provencher, Veronique; Gagnon, Lise et alin Neuropsychological Rehabilitation (2008), 18(2), 204-35The purpose of these two case studies was to explore the effectiveness of learning methods in dementia when applied in real-life settings and the integration of new skills in daily life functioning. The ... [more ▼]The purpose of these two case studies was to explore the effectiveness of learning methods in dementia when applied in real-life settings and the integration of new skills in daily life functioning. The first participant, DD, learned to look at a calendar with the spaced retrieval method to answer his repeated questions about the current date and calls made to family. Progressive cuing was used by his wife to increase spontaneous use of the calendar, but DD had difficulty integrating the calendar into his routine. The second patient, MD, relearned a leisure activity (listening to music on a cassette radio) and how to participate in a social activity (saying the rosary in a group) with a combination of learning methods. Transfer of these skills in similar contexts was difficult for MD. She never integrated the cassette radio into her daily life routine but she went regularly to the rosary activity, which was cued by an alarm clock. In sum, the learning methods used were very effective with these patients but transfer and spontaneous use were difficult. Since these aspects are essential to rehabilitation, they should be further explored in order to increase the effectiveness of cognitive interventions. [less ▲]Detailed reference viewed: 39 (7 ULg) New Level Determinations in Ne VBastin, Thierry ; Biémont, Emile ; Dumont, Paul-Dominique et alPoster (1996)Detailed reference viewed: 7 (2 ULg) New ligands for the living high-molecular-weight anionic (co)polymerization of acrylates in toluene at 0°C.1,2 3. Ligation of sec-butyllithium by lithium silanolatesZundel, Thomas; Teyssié, Philippe; Jérôme, Robert in Macromolecules (1998), 31(17), 5577-5581sec-Butyllithium combined with a new family of ligands, (i.e., lithium silanolates), has been used to initiate the ligated anionic polymerization of n-butyl acrylate (BuA) in toluene at low temperature ... [more ▼]sec-Butyllithium combined with a new family of ligands, (i.e., lithium silanolates), has been used to initiate the ligated anionic polymerization of n-butyl acrylate (BuA) in toluene at low temperature. Compared to other μ-ligands, sBuMe2SiOLi is a more efficient stabilizer of the active centers. Thus, under selectively chosen reaction conditions, the polymerization proceeds quantitatively at −40 °C, producing a high-molecular-weight polymer with narrow-molecular-weight distribution (Mw/Mn < 1.2). When the copolymerization of BuA is initiated by a living {PMMALi, 5·sBuDLi} in toluene at −78 °C, the experimental data agree with a well-controlled block copolymerization reaction, since the final molecular-weight distribution is very narrow (Mw/Mn ≤ 1.1) and the polymerization efficiency very high. [less ▲]Detailed reference viewed: 16 (2 ULg) New ligands for the living isotactic anionic polymerization of methyl methacrylate in toluene at 0°C. 1. Ligation of butyllithium by lithium silanolatesZundel, Thomas; Teyssié, Philippe; Jérôme, Robert in Macromolecules (1998), 31(8), 2433-2439sBuLi and tBuLi have been combined with a new family of ligands, i.e. lithium silanolates, and used as initiators for the ligated anionic polymerization (LAP) of methyl methacrylate (MMA) in toluene at 0 ... [more ▼]sBuLi and tBuLi have been combined with a new family of ligands, i.e. lithium silanolates, and used as initiators for the ligated anionic polymerization (LAP) of methyl methacrylate (MMA) in toluene at 0 °C. Compared to other known μ-ligands, the accordingly formed Bu(Me2)SiOLi are more efficient stabilizers for the active centers. Under appropriate reaction conditions, a fast polymerization proceeds quantitatively without self-termination at 0 °C and leads to high molecular weight polymer of narrow molecular weight distribution (Mw/Mn < 1.2) and high isotacticity (90% isotactic triads). [less ▲]Detailed reference viewed: 12 (3 ULg) New ligands for the living isotactic anionic polymerization of methyl methacrylate in toluene at 0°C. 2. 7Li NMR analysis of sec-butyllithium ligated by lithium silanolatesZundel, Thomas; Zune, Catherine; Teyssié, Philippe et alin Macromolecules (1998), 31(13), 4089-4092The mixed associated species {xsBuLi, (y − x)sBuMe2SiOLi} formed by reaction of sec-Butyllithium (sBuLi) with octamethylcyclotetrasiloxane (Me2SiO)4 in toluene have been used to initiate the anionic ... [more ▼]The mixed associated species {xsBuLi, (y − x)sBuMe2SiOLi} formed by reaction of sec-Butyllithium (sBuLi) with octamethylcyclotetrasiloxane (Me2SiO)4 in toluene have been used to initiate the anionic polymerization of methyl methacrylate (MMA) in that solvent at 0 °C. The active species generated by this new type of initiator have been characterized by 7Li NMR at 0 °C. The 7Li NMR spectra of sBuLi and sBuMe2SiOLi mixtures in toluene show that only one single type of {sBuLi, 5sBuMe2SiOLi} mixed species prevails at [sBuMe2SiOLi]/[sBuLi] molar ratios higher than ca. 21, as result of a large excess of {6sBuMe2SiOLi} species. The 7Li NMR has also concluded to the formation of {PMMALi, 5sBuMe2SiOLi} species upon the addition of MMA to that initiator solution, supporting the theory that only one type of ionic species is active during the MMA conversion. These active centers are stable for at least 1 h at 0 °C as confirmed by 7Li NMR. [less ▲]Detailed reference viewed: 25 (2 ULg) New light on the driving mechanism in roAp stars. I. Effects of metallicityThéado, S.; Dupret, Marc-Antoine ; Noels-Grötsch, Arlette et alin Astronomy and Astrophysics (2009), 493Context: Observations suggest that a relationship exists between the driving mechanism of roAp star pulsations and the heavy element distribution in these stars. Aims: We attempt to study the effects of ... [more ▼]Context: Observations suggest that a relationship exists between the driving mechanism of roAp star pulsations and the heavy element distribution in these stars. Aims: We attempt to study the effects of local and global metallicity variations on the excitation mechanism of high order p-modes in A star models. Methods: We developed stellar evolutionary models to describe magnetic A stars with different global metallicity or local metal accumulation profiles. These models were computed with CLES (Code Liègeois d'évolution stellaire''), and the stability of our models was assessed with the non-adiabatic oscillation code MAD. Results: Our models reproduce the blue edge of the roAp star instability strip, but generate a red edge hotter than the observed one, regardless of metallicity. Surprisingly, we find that an increase in opacity inside the driving region can produce a lower amount of driving, which we refer to as the inverse kappa-mechanism''. [less ▲]Detailed reference viewed: 10 (2 ULg) New light on the peculiar star HD108Nazé, Yaël ; Barbieri, C.; Segafredo, A. et alin Information Bulletin on Variable Stars (2006), 5693HD 108 is a peculiar massive star of type Of?p, which present recurrent line profile variations. Archival data confirm the very long (50-60 yr) period of this star. Recent data show that the minimum state ... [more ▼]HD 108 is a peculiar massive star of type Of?p, which present recurrent line profile variations. Archival data confirm the very long (50-60 yr) period of this star. Recent data show that the minimum state is not yet reached. [less ▲]Detailed reference viewed: 29 (1 ULg) A new lineage of lichenized basidiomycetes inferred from a two-gene phylogeny: the Lepidostromataceae with three species from the TropicsErtz, Damien; Lawrey, J. D.; Sikaroodi, M. et alin American Journal of Botany (2008), 95Detailed reference viewed: 30 (2 ULg) New linear lipopeptides produced by pseudomonas cichorii SF1-54 are involved in virulence, swarming motility, and biofilm formationPauwelyn, E.; Huang, C. J.; Ongena, Marc et alin Molecular Plant-Microbe Interactions [=MPMI] (2013), 26(5), 585-598Pseudomonas cichorii is the causal agent of lettuce midrib rot, characterized by a dark-brown to green-black discoloration of the midrib. Formation of necrotic lesions by several plant-pathogenic ... [more ▼]Pseudomonas cichorii is the causal agent of lettuce midrib rot, characterized by a dark-brown to green-black discoloration of the midrib. Formation of necrotic lesions by several plant-pathogenic pseudomonads is associated with production of phytotoxic lipopeptides, which contribute to virulence. Therefore, the ability of P. cichorii SF1-54 to produce lipopeptides was investigated. A cell-free culture filtrate of SF1-54 showed surfactant, antimicrobial, and phytotoxic activities which are typical for lipopeptides. High-performance liquid chromatography analysis of P. cichorii SF1-54 culture filtrate revealed the presence of seven compounds with lipopeptide characteristics. Two related lipopeptides, named cichofactin A and B, were studied in more detail: they are linear lipopeptides with a decanoic and dodecanoic lipid chain, respectively, connected to the N-terminus of an eight-amino-acid peptide moiety. Both cichofactins are new members of the syringafactin lipopeptide family. Furthermore, two nonribosomal peptide synthethase-encoding genes, cifA and cifB, were identified as responsible for cichofactin biosynthesis. A cifAB deletion mutant no longer produced cichofactins and was impaired in swarming motility but showed enhanced biofilm formation. Upon spray inoculation on lettuce, the cichofactindeficient mutant caused significantly less rotten midribs than the wild type, indicating that cichofactins are involved in pathogenicity of P. cichorii SF1-54. Further analysis revealed that P. cichorii isolates vary greatly in swarming motility and cichofactin production. © 2013 The American Phytopathological Society. [less ▲]Detailed reference viewed: 17 (0 ULg) New lithostratigraphical, sedimentological, mineralogical and palaeontological data on the Mesozoic of Belgian Lorraine: a progress reportBoulvain, Frédéric ; Belanger, I.; Delsate, D. et alin Geologica Belgica (2001), 3(1-2), 3-33A multidisciplinary study of some extensively cored boreholes together with the new 1/25.000 geological mapping of wallonia lead us to propose a new lithostratigraphic canvas for belgian lorraine. This ... [more ▼]A multidisciplinary study of some extensively cored boreholes together with the new 1/25.000 geological mapping of wallonia lead us to propose a new lithostratigraphic canvas for belgian lorraine. This area is located on the n-e border of the paris basin, south of the ardennes; the studied stratigraphic interval covers the keuper to the toarcian. Each of the newly defined units is sedimentologicaly interpreted on the basis of macroscopic and microscopic observations. Detailed palynological and claystratigraphical analyses have been performed, providingadditional stratigraphical, palaeoecological and sedimentological data. Moreover, a first sequence stratigraphic interpretation is proposed for this highly transgressive sedimentary body. The habay formation (conglomerates and red mudstones) is a fluvial unit, with immature channel conglomerates and paleosoils; the attert formation (dolomitic marls with gypsum and pseudomorphs) exhibites an evaporitic trend. The Mortinsart formation (sands and marls) corresponds to a restricted marine unit, evolving towards an alluvial plain (levallois member). The second cycle begins with the Jamoigne Formation (bioturbated marls and limestones), a marine subtidal restricted unit, evolving towards a more sandy sedimentary body (Metzert Member). The base of the third cycle corresponds to the rest of the Luxemburg Formation, comprising a succession of sandy waves. The Ethe Formation (laminar mudstones and marls) marks a deepening of the basin and the outset of open marine dysaerobic conditions. The Aubange Formation (bioturbated marls with sandstones and limestones) is characterized by the reappearance of a normal benthic fauna. The Grandcourt Formation (laminar mudstones and marls) marks a return to open marine dysaerobic conditions. The Mont-Saint-Martin Formation (marls, sandy marls and oolitic ironstone) is a highly regressive unit, while the Longwy Formation (limestones) marks the initiation of a carbonate platform. [less ▲]Detailed reference viewed: 32 (0 ULg) A new longirostrine ichthyosaur (Reptilia) from the Toarcian of France broadens the ecological diversity of the genus TemnodontosaurusMartin, Jeremy; Fischer, Valentin ; Vincent, Peggy et alPoster (2011, September)The ichthyosaur genus Temnodontosaurus has always been viewed as a top predator of the Early Jurassic marine environments, while other contemporaneous ichthyosaurs such as leptonectids and stenopterygiids ... [more ▼]The ichthyosaur genus Temnodontosaurus has always been viewed as a top predator of the Early Jurassic marine environments, while other contemporaneous ichthyosaurs such as leptonectids and stenopterygiids were occupying the lower trophic levels. We describe here an almost complete skeleton of this successful genus from the middle Toarcian (Lower Jurassic) of the Beaujolais foothills near Lyon, France, and assign it to a new species of Temnodontosaurus. This specimen exhibits cranial peculiarities such as a thin, elongated, and likely edentulous rostrum, as well as a reduced quadrate. Such morphological combination indicates dietary preferences that markedly differ from other species referred to as Temnodontosaurus. Despite a conservative postcranial skeleton, we propose that Temnodontosaurus is one of the most ecologically diverse genera of ichthyosaurs, including apex predators, small and soft prey longirostrine hunters, and generalized forms. Ammonites collected along the described specimen indicate that the new species is younger (bifrons ammonite zone) than most known Toarcian ichthyosaurs and therefore slightly postdates the severe environmental changes and marine invertebrate extinctions that occur during the Toarcian Oceanic Anoxic Event. The present study hence raises the question whether the speciation of Temnodontosaurus towards a new ecological niche, may have been a consequence of the post-crisis marine ecosystem reorganization. [less ▲]Detailed reference viewed: 113 (2 ULg) A new look at Herrmann's formulation of incompressibilityDebongnie, Jean-François in Wellford, L.; Carter, Jr. (Eds.) Proceedings of the symposium on applications of computer methods in engineering (vol.2) (1977, August)An exposition of Herrmann's formulation is given first, and its extension to the anisotropic case is presented following a new way. Using this method, the matrix of material coefficients can be calculated ... [more ▼]An exposition of Herrmann's formulation is given first, and its extension to the anisotropic case is presented following a new way. Using this method, the matrix of material coefficients can be calculated in a fully automated manner. The existence of the solution is briefly discussed next. A necessary and sufficient condition is obtained which turns to be of unpratical use. Fortunately, this condition is in most practical cases equivalent to another one, which is of fairly simple use. These concepts are illustrated by an example. [less ▲]Detailed reference viewed: 122 (4 ULg) A New Look at Ichthyosaur Long Bone Microanatomy and Histology: Implications for Their Adaptation to an Aquatic LifeHoussaye, Alexandra; Scheyer, Torsten; Kolb, Christian et alin PLoS ONE (2014), 9(4), 95637Background Ichthyosaurs are Mesozoic reptiles considered as active swimmers highly adapted to a fully open-marine life. They display a wide range of morphologies illustrating diverse ecological grades ... [more ▼]Background Ichthyosaurs are Mesozoic reptiles considered as active swimmers highly adapted to a fully open-marine life. They display a wide range of morphologies illustrating diverse ecological grades. Data concerning their bone microanatomical and histological features are rather limited and suggest that ichthyosaurs display a spongious, “osteoporotic-like” bone inner structure, like extant cetaceans. However, some taxa exhibit peculiar features, suggesting that the analysis of the microanatomical and histological characteristics of various ichthyosaur long bones should match the anatomical diversity and provide information about their diverse locomotor abilities and physiology. Methodology/Principal Findings The material analyzed for this study essentially consists of mid-diaphyseal transverse sections from stylopod bones of various ichthyosaurs and of a few microtomographic (both conventional and synchrotron) data. The present contribution discusses the histological and microanatomical variation observed within ichthyosaurs and the peculiarities of some taxa (Mixosaurus, Pessopteryx). Four microanatomical types are described. If Mixosaurus sections differ from those of the other taxa analyzed, the other microanatomical types, characterized by the relative proportion of compact and loose spongiosa of periosteal and endochondral origin respectively, seem to rather especially illustrate variation along the diaphysis in taxa with similar microanatomical features. Our analysis also reveals that primary bone in all the ichthyosaur taxa sampled (to the possible exception of Mixosaurus) is spongy in origin, that cyclical growth is a common pattern among ichthyosaurs, and confirms the previous assumptions of high growth rates in ichthyosaurs. Conclusions/Significance The occurrence of two types of remodelling patterns along the diaphysis, characterized by bone mass decrease and increase respectively is described for the first time. It raises questions about the definition of the osseous microanatomical specializations bone mass increase and osteoporosis, notably based on the processes involved, and reveals the difficulty in determining the true occurrence of these osseous specializations in ichthyosaurs. [less ▲]Detailed reference viewed: 10 (0 ULg) New look at the (70,1-) baryon multiplet in the 1/N(c) expansionMatagne, Nicolas; Stancu, Floarea in Nucl. Phys. (2008), A811So far, the masses of excited states of mixed orbital symmetry and in particular those of nonstrange $[{\bf 70},1^-]$ baryons derived in the $1/N_c$ expansion were based on the separation of a system of ... [more ▼]So far, the masses of excited states of mixed orbital symmetry and in particular those of nonstrange $[{\bf 70},1^-]$ baryons derived in the $1/N_c$ expansion were based on the separation of a system of $N_c$ quarks into a symmetric core and an excited quark. Here we avoid this separation and show that an advantage of this new approach is to substantially reduce the number of linearly independent operators entering the mass formula. A novelty is that the isospin-isospin term becomes as dominant in $\Delta$ as the spin-spin term in $N$ resonances. [less ▲]Detailed reference viewed: 6 (0 ULg) New look at the [70,1-] nonstrange and strange baryons in the 1/Nc expansionMatagne, Nicolas ; Stancu, Floarea in AIP Conference Proceedings (2011), 1343The masses of excited nonstrange and strange baryons belonging to the multiplet $[{\bf 70},1^-]$ are calculated in the $1/N_c$ expansion to order $1/N_c$ with a new method which allows to considerably ... [more ▼]The masses of excited nonstrange and strange baryons belonging to the multiplet $[{\bf 70},1^-]$ are calculated in the $1/N_c$ expansion to order $1/N_c$ with a new method which allows to considerably reduce the number of linearly independent operators entering the mass formula. This study represents an extension to SU(6) of our work on nonstrange baryons, the framework of which was SU(4). [less ▲]Detailed reference viewed: 20 (10 ULg) A new look to an old measurement.Pierard, Luc ; Magne, Julien in Journal of the American College of Cardiology (2009), 54(21), 1969-70Detailed reference viewed: 5 (1 ULg) A new low-cost and non-intrusive feet trackerPierard, Sébastien ; PHAN BA, Remy ; Van Droogenbroeck, Marc et alin Workshop on Circuits, Systems and Signal Processing (ProRISC) (2011, November)Capturing gait is useful for many applications, including video-surveillance and medical purposes. The most common sensors used to capture gait suffer from significant drawbacks. We have therefore ... [more ▼]Capturing gait is useful for many applications, including video-surveillance and medical purposes. The most common sensors used to capture gait suffer from significant drawbacks. We have therefore designed a new low-cost and nonintrusive system to capture gait. Our system is able to track the feet on the horizontal plane in both the stance and the swing phases by combining measures of several range laser scanners. The number of sensors can be adjusted according to the target application specifications. The first issue addressed in this work is the calibration: we have to know the precise location of the sensors in a plane, and their orientations. The second issue addressed is how to calculate feet coordinates from the distance profiles given by the sensors. Our method has proven to be robust and precise to measure gait abnormalities in various medical conditions, especially neurological diseases (with a focus on multiple sclerosis). [less ▲]Detailed reference viewed: 206 (37 ULg) A new Lower Cretaceous ichthyosaur from Russia reveals skull shape conservatism within OphthalmosaurinaeFischer, Valentin ; Arkhangelsky, Maxim; Uspensky, Gleb et alin Geological Magazine (2014), 151(1), 60-70Ophthalmosaurinae is a recently recognized clade of derived ichthyosaurs (marine reptiles) ranging from the Bajocian (Middle Jurassic) to the late Albian (late Early Cretaceous). Whereas the Middle-Late ... [more ▼]Ophthalmosaurinae is a recently recognized clade of derived ichthyosaurs (marine reptiles) ranging from the Bajocian (Middle Jurassic) to the late Albian (late Early Cretaceous). Whereas the Middle-Late Jurassic ophthalmosaurine Ophthalmosaurus is often regarded as a hyperspecialized deep diver, very little is known about the anatomy, evolutionary history, and ecology of Cretaceous ophthalmosaurines because of the scarcity of the fossils and the lack of well-preserved skull material. Here, we describe the skull of a new basal ophthalmosaurine ichthyosaur, Leninia stellans gen. et sp. nov., from the lower Aptian of western Russia, and compare the ocular characteristics of ophthalmosaurids. Leninia is recovered as a basal ophthalmosaurine; it possesses unique traits such as star-shaped frontal–parietal sutures as well as features previously thought to be unique to Ophthalmosaurus such as a supratemporal–stapes contact. A large sclerotic aperture – significantly bigger than in platypterygiine ophthalmosaurids and similar to that of the largest-eyed modern animals (giant and colossal squids) – and reduced dentition appear widespread within ophthalmosaurines. This conservatism suggests ophthalmosaurine ophthalmosaurids occupied similar ecological niche(s) throughout their long evolutionary history. [less ▲]Detailed reference viewed: 146 (10 ULg) New magnetic field measurements of beta Cephei stars and slowly pulsating B starsHubrig, S.; Briquet, Maryline ; De Cat, P. et alin Astronomische Nachrichten (2009), 330We present the results of the continuation of our magnetic survey with FORS 1 at the VLT of a sample of B-type stars consisting of confirmed or candidate Î² Cephei stars and Slowly Pulsating B (hereafter ... [more ▼]We present the results of the continuation of our magnetic survey with FORS 1 at the VLT of a sample of B-type stars consisting of confirmed or candidate Î² Cephei stars and Slowly Pulsating B (hereafter SPB) stars, along with a small number of normal B-type stars. A weak mean longitudinal magnetic field of the order of a few hundred Gauss was detected in three Î² Cephei stars and two stars suspected to be Î² Cephei stars, in five SPB stars and eight stars suspected to be SPB stars. Additionally, a longitudinal magnetic field at a level larger than 3Ï has been diagnosed in two normal B-type stars, the nitrogen-rich early B-type star HD 52089 and in the B5 IV star HD 153716. Roughly one third of Î² Cephei stars have detected magnetic fields: Out of 13 Î² Cephei stars studied to date with FORS 1, four stars possess weak magnetic fields, and out of the sample of six suspected Î² Cephei stars two show a weak magnetic field. The fraction of magnetic SPBs and candidate SPBs is found to be higher: Roughly half of the 34 SPB stars have been found to be magnetic and among the 16 candidate SPBs eight stars possess magnetic fields. In an attempt to understand why only a fraction of pulsating stars exhibit magnetic fields, we studied the position of magnetic and non-magnetic pulsating stars in the H-R diagram. We find that their domains in the H-R diagram largely overlap, and no clear picture emerges as to the possible evolution of the magnetic field across the main sequence. It is possible that stronger fields tend to be found in stars with lower pulsating frequencies and smaller pulsating amplitudes. A somewhat similar trend is found if we consider a correlation between the field strength and the v sin i-values, i.e. stronger magnetic fields tend to be found in more slowly rotating stars. Based on observations obtained at the European Southern Observatory, Paranal, Chile (ESO programmes 078.D-0140(A), 078.D-0330(A), 079.D-0241(A), and 080.D-0383(A)). [less ▲]Detailed reference viewed: 46 (8 ULg) New magnetic field measurements of beta Cephei stars and slowly pulsating B starsHubrig, Swetlana; Briquet, Maryline ; De Cat, P. et alin IAU Symposium (2009, April 01)We present the results of the continuation of our magnetic survey with FORS 1 at the VLT of a sample of B-type stars consisting of confirmed or candidate Î² Cephei stars and Slowly Pulsating B stars ... [more ▼]We present the results of the continuation of our magnetic survey with FORS 1 at the VLT of a sample of B-type stars consisting of confirmed or candidate Î² Cephei stars and Slowly Pulsating B stars. Roughly one third of the studied Î² Cephei stars have detected magnetic fields. The fraction of magnetic Slowly Pulsating B and candidate Slowly Pulsating B stars is found to be higher, up to 50%. We find that the domains of magnetic and non-magnetic pulsating stars in the H-R diagram largely overlap, and no clear picture emerges as to the possible evolution of the magnetic field across the main sequence. [less ▲]Detailed reference viewed: 20 (6 ULg)