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 85741 to 85760 of 107934     4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293     Rearrangement of 1-alkynyltrialkylaluminatesDebuigne, Antoine ; Gérard, J.; Hevesi, LaszloPoster (2000, July 14)Detailed reference viewed: 2 (0 ULg) Rearrangement of 1-alkynyltrialkylaluminatesDebuigne, Antoine ; Gérard, Julien; Hevesi, LàszlòPoster (1999, December 02)Detailed reference viewed: 8 (1 ULg) Reasoning about Infinite ComputationsVardi, Moshe Y.; Wolper, Pierre in Information & Computation (1994), 115(1), 1-37We investigate extensions of temporal logic by connectives defined by finite automata on infinite words. We consider three different logics, corresponding to three different types of acceptance conditions ... [more ▼]We investigate extensions of temporal logic by connectives defined by finite automata on infinite words. We consider three different logics, corresponding to three different types of acceptance conditions (finite, looping, and repeating) for the automata. It turns out, however that these logics all have the same expressive power and that their decision problems are all PSPACE-complete. We also investigate connectives defined by alternating automata and show that they do not increase the expressive power of the logic or the complexity of the decision problem. (C) 1994 Academic Press, Inc. [less ▲]Detailed reference viewed: 52 (0 ULg) Reasoning of winter wheat mineral fertilisation. Nitrogen cycling and leaching in cool and wet regions of EuropeBodson, Bernard ; Falisse, Andréin Symposium COST 814 (1992, October 22)Detailed reference viewed: 1 (0 ULg) A Reasoning System of Ternary Projective RelationsClementini, Eliseo; Skiadopoulos, Spiros; Billen, Roland et alin IEEE Transactions on Knowledge & Data Engineering (2010), 22(2), 161-178Detailed reference viewed: 68 (6 ULg) Reasoning versus knowledge retention and ascertainment throughout a problem-based learning curriculumCollard, Anne ; Gelaes, Sabine ; Vanbelle, Sophie et alin Medical Education (2009), 43CONTEXT: Since 2000, problem-based learning (PBL) seminars have been introduced into the curriculum of medical studies at the University of Liège. We aimed to carry out a cross-sectional investigation of ... [more ▼]CONTEXT: Since 2000, problem-based learning (PBL) seminars have been introduced into the curriculum of medical studies at the University of Liège. We aimed to carry out a cross-sectional investigation of the maturational increase in biomedical reasoning capacity in comparison with factual knowledge retention throughout the curriculum. METHODS: We administered a factual knowledge test (i.e. a true ⁄ false test with ascertainment degree) and a biomedical reasoning test (i.e. an adapted script concordance test [SCT]) to 104 students (Years 3–6) and a reference panel. The selected topic was endocrinology. RESULTS: On the SCT, the students obtained higher scores in Years 5 and 6 than in Years 3 and 4. In Year 3, the scores obtained on SCT questions in a new context indicated transfer of reasoning skills. On the true ⁄ false test, the scores of Year 3 students were significantly higher than those of students in the other three year groups. A positive correlation between SCT scores and true ⁄ false test scores was observed only for students in Years 3 and 4. In each group, the ascertainment degree scores were higher for correct than for incorrect responses and the difference was calculated as an index of self-estimation of core knowledge. This index was found to be positively correlated to SCT scores in the four year groups studied. CONCLUSIONS: Biomedical reasoning skills are evidenced early in a curriculum involving PBL and further increase during training. This is accompanied by a decrease in factual knowledge retention. The self-estimation of core knowledge appears to be related to reasoning capacity, which suggests there is a link between the two processes. [less ▲]Detailed reference viewed: 28 (13 ULg) The Reasons of Art. Peter Mc Cornick (ed.)Van Cauwenberge, Geneviève in Journal of Aesthetics & Art Criticism (1987), (été), Detailed reference viewed: 17 (2 ULg) Reassembly of functional nucleoli following in situ unraveling by low-ionic-strength treatment of cultured mammalian cells.Zatsepina, O. V.; Dudnic, O. A.; Chentsov, Y. S. et alin Experimental Cell Research (1997), 233(1), 155-68In order to determine the most persistent components of the nucleolus that might serve as "core" nucleolar elements, we studied the reactivity of nucleoli in living mammalian cells subjected to hypotonic ... [more ▼]In order to determine the most persistent components of the nucleolus that might serve as "core" nucleolar elements, we studied the reactivity of nucleoli in living mammalian cells subjected to hypotonic buffer saline followed by the incubation of the cells in an isotonic medium. To document as precisely as possible the fine structural changes which occurred, the cells were examined by video-enhanced optical microscopy, fluorescence confocal laser scanning microscopy, and electron microscopy combined with cytochemistry. Light microscopic autoradiography was used to demonstrate the transcriptional characteristics of the reassembled nucleoli. It was shown that all the major compartments of the intact nucleolus could be substantially affected by reduction of the osmolarity of the environmental media. The dynamic events of the nucleolar unraveling in low-salt buffers occurred in the following order: dispersion of the nucleolar pars granulosa, disassociation of the fibrillar complexes into discrete fibrillar centers (FCs) and the dense fibrillar component (DFC), and the almost complete unraveling of the DFC and FCs. At the terminal stages of nucleolar dispersion, the nuclear interior was mainly composed of a loose filamentous meshwork, and none of the typically discerned nucleolar constituents was recognized. Nevertheless, when hypotonically treated cells were returned to isotonic conditions, the nucleolar bodies rapidly began to reassemble. Within 1-2 h of cell incubation under isotonicity, the nucleoli not only became clearly visible, but also reconstituted to their initial size, shape, and position within the nucleus. The ultrastructure and functional activity of the reassembled nucleoli were also found to be fully comparable to those of the untreated controls. These data indicate that the architectural composition of the interphase nucleolus is strictly controlled by the cell. As far as could be determined, none of the usual substructures of the intact nucleolus that could be substituted by complete reassembly of the nucleolar bodies in normotonic conditions, including FCs and the DFC, remained clearly preserved in the terminal stage of nucleolar unraveling. We concluded that the integrity of the nucleolus was mainly preserved by the nuclear or nucleolar matrix system rather than by any other nucleolar structural domains. [less ▲]Detailed reference viewed: 4 (0 ULg) Reassessing Multiculturalism in Europe: BelgiumMartiniello, Marco Scientific conference (2006, June 30)Detailed reference viewed: 15 (0 ULg) Reassessing the importance of the colour-singlet contributions to direct $J/ + W$ production at the LHC and the TevatronLansberg, Jean-Philippe ; Lorce, Cédric in Physics Letters B (2013), B726We show that the colour-singlet contributions to the hadroproduction of $J/\Psi$ in association with a W boson are sizable, if not dominant over the colour-octet contributions. They are of two kinds, $sg ... [more ▼]We show that the colour-singlet contributions to the hadroproduction of$J/\Psi$in association with a W boson are sizable, if not dominant over the colour-octet contributions. They are of two kinds,$sg\toJ/\Psi+c+W$at$\alpha^3s\alpja$and$q\overline q' \to\gamma^\star /Z ^\star W\to J/\Psi W$at order$\alpha^3$. These have not been considered in the literature until now. Our conclusion is that the hadroproduction of a$J/\Psi$in association with a W boson cannot be claimed as a clean probe of the colour-octet mechanism. The rate are small even at the LHC and it will be very delicate to disentangle the colour-octet contributions from the sizable colour-singlet ones and from the possibly large double-parton-scattering contributions. During this analysis, we have also noted that, for reactions such as the production of a$J/\Psi\$ by light quark–antiquark fusion, the colour-singlet contribution via an off-shell photon is of the order of the expectation from the colour-octet contribution via an off-shell gluon. This is relevant for inclusive production at low energies close to the threshold. Such an observation also likely extends to other processes naturally involving light-quark annihilation. [less ▲]Detailed reference viewed: 20 (4 ULg) Reassessment of Viséan Miospore biostratigraphy in the Amazon basin, northern Brazil.Loboziak, S; Melo, J.H.G.; Streel, Maurice in Review of Palaeobotany and Palynology (1998), 104Detailed reference viewed: 3 (0 ULg) La réathlétisation du LCARodriguez de la Cruz, Carlos ; Lehance, Cédric ; Namurois, Guy et alin Abstract book du 7ème Congrès du GIBL (2010, November 27)Detailed reference viewed: 340 (27 ULg) Rebeccamycin derivatives as dual DNA-damaging agents and potent checkpoint kinase 1 inhibitors.Marminon, Christelle; Anizon, Fabrice; Moreau, Pascale et alin Molecular Pharmacology (2008), 74(6), 1620-9Rebeccamycin is an indolocarbazole class inhibitor of topoisomerase I. In the course of structure-activity relationship studies on rebeccamycin derivatives, we have synthesized analogs with the sugar ... [more ▼]Rebeccamycin is an indolocarbazole class inhibitor of topoisomerase I. In the course of structure-activity relationship studies on rebeccamycin derivatives, we have synthesized analogs with the sugar moiety attached to either one or both indole nitrogens. Some analogs, especially those with substitutions at the 6' position of the carbohydrate moiety, exhibit potent inhibitory activity toward checkpoint kinase 1 (Chk1), a kinase that has a major role in the G(2)/M checkpoint in response to DNA damage. Some of these compounds retained a genotoxic activity either through intercalation into the DNA and/or by topoisomerase I-mediated DNA cleavage. We explored the structure-activity relationship between these compounds and their multiple targets. These rebeccamycin derivatives represent a novel class of potential antitumor agents that have a dual effect and might selectively induce the death of cancer cells. [less ▲]Detailed reference viewed: 28 (0 ULg) Rebel zonder zaak. Bij 'Voor de dichter Antonin Artaud' van Hugo ClausSpinoy, Erik in Lindner, Erik (Ed.) Gedicht, geen gedicht (2007)This article is a reflection on the radicalism of Claus' poetry. Although Claus was know to be a staunch enemy of Christianity, his subjective position can be constructed to be inspired by the radical ... [more ▼]This article is a reflection on the radicalism of Claus' poetry. Although Claus was know to be a staunch enemy of Christianity, his subjective position can be constructed to be inspired by the radical 'Paulinian' injunction to 'make everything new'. [less ▲]Detailed reference viewed: 33 (0 ULg) Les reboisements en moabi, le cas du village de MedjohSemereab, E.; Doucet, Jean-Louis Conference (2006)Detailed reference viewed: 36 (14 ULg) Rebondir. Coronmeuse, un site d'une qualité exceptionnelleFrankignoulle, Pierre Article for general public (2013)Detailed reference viewed: 26 (4 ULg) Rebound of a confined granular material: combination of a bouncing ball and a granular damper.Pacheco Vazquez, Felipe ; Dorbolo, Stéphane in Scientific Reports (2013), 3(2158), 10103802158A ball dropped over a solid surface bounces several times before a complete stop. The bouncing can be reduced by introducing a liquid into the ball; however, the first rebound remains largely unaffected ... [more ▼]A ball dropped over a solid surface bounces several times before a complete stop. The bouncing can be reduced by introducing a liquid into the ball; however, the first rebound remains largely unaffected by the fluid. Granular materials can also work as dampers. We investigated the rebound of a container partially filled with a given mass of grains mi. During the collision, the kinetic energy of the container is partially transferred to the grains, the rebound is damped, and the fast energy dissipation through inter-particle collisions and friction decreases the bouncing time dramatically. For grain-filled cylinders, a completely inelastic collision (zero rebound) is obtained when mi≥1.5εomc, where εo and mc are the coefficient of restitution and mass of the empty container. For grain-filled spheres, the first rebound is almost undamped, but the second collision is completely inelastic if mi>>mc. These findings are potentially useful to design new granular damping systems. [less ▲]Detailed reference viewed: 37 (16 ULg) Le recadrage dans les situations conflictuelles. Description et mise en perspective de l'approche de Michel MonroyFaulx, Daniel in Thérapie Familiale (2006), 4This paper presents the reframing approach developed by Michel Monroy. His approach deals more particularly with the reframing of conflictual situations experienced within the frame of a family as well as ... [more ▼]This paper presents the reframing approach developed by Michel Monroy. His approach deals more particularly with the reframing of conflictual situations experienced within the frame of a family as well as at work. The way he gives shape to his practice seems to us to be an interesting contribution on the field of methodology as well as to the reframing technique as such. [less ▲]Detailed reference viewed: 82 (9 ULg) The recalcitrance to rooting of the micropropagated shoots of the rac tobacco mutant: Implications of polyamines and of the polyamine metabolismFaivre-Rampant, Odile; Kevers, Claire ; Dommes, Jacques et alin Plant Physiology & Biochemistry (2000), 38(6), 441-448Rooting of wild-type tobacco (Nicotiana tabacum cv. Xanthi) shoots raised in vitro was promoted by polyamines in the absence of any other growth regulator and was inhibited by two inhibitors of polyamine ... [more ▼]Rooting of wild-type tobacco (Nicotiana tabacum cv. Xanthi) shoots raised in vitro was promoted by polyamines in the absence of any other growth regulator and was inhibited by two inhibitors of polyamine metabolism. The auxin insensitive and recalcitrant to rooting rac mutant shoots did not respond to the same treatments. The activities of arginine decarboxylase (ADC), ornithine decarboxylase (ODC), diamine oxidase (DAO), polyamine oxidase (PAO) and transglutaminases (TGases), and the titres of free and conjugated polyamines were estimated in the whole shoots and the basal parts of the stems of both tobaccos in the course of multiplication in vitro. The rac shoots grew at a lower rate. The wild-type rooted from the 7th day without special treatment. During the second week of culture, the shoots of both tobaccos were actively growing and showed an increase in ADC, ODC, DAO, PAO and TGase activities. Afterwards all these activities declined. These changes were concomitant with an increase in the polyamine contents (free and conjugated). Biosynthesis and oxidation of polyamines apparently occurred simultaneously and seemed directly correlated. In the basal part of the mutant stems however, the accumulation of free and conjugated putrescine as well as the transient increase in biosynthetic enzyme activities were delayed compared to the wild-type. These results are discussed in relation to growth behaviour and to root formation. (C) 2000 Editions scientifiques et medicales Elsevier SAS. [less ▲]Detailed reference viewed: 54 (1 ULg) Recalling episodic information about personally known faces and voicesBarsics, Catherine ; Brédart, Serge in Consciousness & Cognition (2011), 20(2), 303-308Detailed reference viewed: 14 (5 ULg)