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 21657 to 21676 of 148116     1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088     Clusters or networks of economies? A macroeconomy study through gross domestic productAusloos, Marcel ; Lambiotte, R.in Physica A-Statistical Mechanics and its Applications (2007), 382(1), 16-21We study correlations between web-downloaded gross domestic product (GDP)'s of rich countries. GDP is used as wealth signatures of the country economical state. We calculate the yearly fluctuations of the ... [more ▼]We study correlations between web-downloaded gross domestic product (GDP)'s of rich countries. GDP is used as wealth signatures of the country economical state. We calculate the yearly fluctuations of the GDP. We look for forward and backward correlations between such fluctuations. The correlation measure is based on the Theil index. The system is represented by an evolving weighted network, nodes being the GDP fluctuations (or countries) at different times. In order to extract structures from the network, we focus on filtering the time delayed correlations by removing the least correlated links. This percolation idea-based method reveals the emergence of connections, that are visualized by a branching representation. Note that the network is made of weighted and directed links when taking into account a delay time. Such a measure of collective habits does not readily fit the usual expectations, except if an economy globalization framework is accepted. (C) 2007 Published by Elsevier B.V. [less ▲]Detailed reference viewed: 18 (2 ULg) The CMC-like behaviour of bile salts as probed by photoexcited Rose BengalSeret, Alain ; Bahri, Mohamed Ali in Colloids and Surfaces A : Physicochemical and Engineering Aspects (2009), 339The onset of the aggregation process in aqueous bile salt (BS) solutions remains a debated question. This study aimed at investigating this point through the detection of BS monomers and small aggregates ... [more ▼]The onset of the aggregation process in aqueous bile salt (BS) solutions remains a debated question. This study aimed at investigating this point through the detection of BS monomers and small aggregates using the dye Rose Bengal. Results showed that a few small BS aggregates led to a red shift of the absorption spectrum, while the BS monomer reacted with the photo-induced semi-oxidized dye and decreased its decay rate constant. The dye was dissolved in aqueous solution (10 mmol dm-3 NaOH) of sodium cholate (NaC), deoxycholate (NaDC), chenodoxycholate (NaCDC), dehydrocholate (NaDHC), glycocholate (NaGC) glycodeoxycholate (NaGDC), taurocholate (NaTC), taurodeoxycholate (NaTDC) and the zwitterionic analogue of sodium cholate called CHAPS. BS aggregates were detected at concentrations well below the concentration above which any added bile salt molecules participate in the aggregation process for all trihydroxy bile salts and for CHAPS but not for the dihydroxy bile salts. No aggregation of NaDHC could be observed in the studied concentration range (≤ 10 mmol dm-3). The presence of 150 and 600 mmol dm-3 sodium ions lowered the concentration below which BS are mainly monomers for dihydroxy but not for trihydroxy bile salts. As already proposed by others, the use of the concept of Micellar Dissociation Concentration (MDC) is suggested here instead of the classical Critical Micelle Concentration (CMC). [less ▲]Detailed reference viewed: 67 (14 ULg) CMOS potentiostat and sensor with multilayer membrane for wide range measurements of glucos concentrationsMross, S; Fürst, P; Pierrat, S et alin Proceedings of "IEEE Sensor Conference : Espagne - Novembre 2014" (2014, November)Detailed reference viewed: 15 (0 ULg) CMOS-APS Detectors for Solar Physics: Lessons Learned during the SWAP Preflight CalibrationDe Groof, Anik; Berghmans, David; Nicula, Bogdan et alin Solar Physics (2008)Detailed reference viewed: 36 (5 ULg) A CMOS-MEMS Resonator Integrated System for Oscillator ApplicationPachkawade, Vinayak ; Ming-Huang Li; Cheng-Syun Li et alin IEEE Sensors Journal (2013), 13(08), 2882-2889This paper focuses on the design and development of a CMOS-MEMS resonator integrated with an on-chip amplifier with emphasis on its single-chip frequency reference oscillator implementation. A flexural ... [more ▼]This paper focuses on the design and development of a CMOS-MEMS resonator integrated with an on-chip amplifier with emphasis on its single-chip frequency reference oscillator implementation. A flexural-mode ring resonator with a desired mode shape featuring an inherent fully-differential mode of mechanical operation is designed using both analytical and finite element models. Two such resonators in low- and high-frequency domains, centered at 1.39 and 9.34 MHz respectively, are individually modeled using first principals, equations, and simulation tools to evaluate and improve device performance. In this paper, the device is also shown to offer a potential benefit of capacitive feedthrough cancelation up to 30 dB attributed to differential signaling scheme. Subsequently, both rapidly prototyped devices integrated with their on-chip transimpedance amplifiers are demonstrated using a commercially available TSMC 0.35-μm CMOS technology. A low-frequency resonator integrated with its on-chip amplifier exhibited decent overall performance capabilities in terms of much higher transmission spectra (closer to 0 dB), greater feedthrough suppression, higher signal-to-feedthrough ratio (35 dB), and exact phase shift (0°) at resonance frequency, therefore being a potential candidate for a single-chip oscillator system. [less ▲]Detailed reference viewed: 19 (5 ULg) The CN isotopic ratios in cometsManfroid, Jean ; Jehin, Emmanuel ; Hutsemekers, Damien et alin Astronomy and Astrophysics (2009), 503Our aim is to determine the isotopic ratios [SUP]12[/SUP]C/[SUP]13[/SUP]C and [SUP]14[/SUP]N/[SUP]15[/SUP]N in a variety of comets and link these measurements to the formation and evolution of the solar ... [more ▼]Our aim is to determine the isotopic ratios [SUP]12[/SUP]C/[SUP]13[/SUP]C and [SUP]14[/SUP]N/[SUP]15[/SUP]N in a variety of comets and link these measurements to the formation and evolution of the solar system. The [SUP]12[/SUP]C/[SUP]13[/SUP]C and [SUP]14[/SUP]N/[SUP]15[/SUP]N isotopic ratios are measured for the CN radical by means of high-resolution optical spectra of the R branch of the B-X (0, 0) violet band. 23 comets from different dynamical classes have been observed, sometimes at various heliocentric and nucleocentric distances, in order to estimate possible variations of the isotopic ratios in parent molecules. The [SUP]12[/SUP]C/[SUP]13[/SUP]C and [SUP]14[/SUP]N/[SUP]15[/SUP]N isotopic ratios in CN are remarkably constant (average values of, respectively, 91.0 Â± 3.6 and 147.8 Â± 5.7) within our measurement errors, for all comets whatever their origin or heliocentric distance. While the carbon isotopic ratio does agree with the terrestrial value (89), the nitrogen ratio is a factor of two lower than the terrestrial value (272), indicating a fractionation in the early solar system, or in the protosolar nebula, common to all the comets of our sample. This points towards a common origin of the comets independently of their birthplaces, and a relationship between HCN and CN. Appendices and Table [see full textsee full textsee full text] are only available in electronic form at http://www.aanda.org Based on observations made with ESO Telescopes at the La Silla Paranal Observatory under programmes ID 268.C-5570, 270.C-5043, 073.C-0525, 274.C-5015 and 075.C-0355(A). [less ▲]Detailed reference viewed: 24 (1 ULg) Cn. Octavius (cos. 165) dans un nouveau sénatus-consulte découvert à Volos ?Famerie, Etienne in Chiron. Mitteilungen der Kommission für Alte Geschichte und Epigraphik des Deutschen Archäologischen Instituts (2013), 43Detailed reference viewed: 58 (1 ULg) Cn. Octavius (cos. 165) dans un nouveau sénatus-consulte découvert à Volos ?Famerie, Etienne Scientific conference (2012, April 04)Detailed reference viewed: 27 (2 ULg) CNMNC guidelines for the use of suffixes and prefixes in mineral nomenclature, and for the preservation of historical names.Hatert, Frédéric ; Mills, S.J.; Pasero, M et alin Abstract Book (2012)Detailed reference viewed: 33 (0 ULg) CNMNC guidelines for the use of suffixes and prefixes in mineral nomenclature, and for the preservation of historical names.Hatert, Frédéric ; Mills, Stuart; Pasero, Marco et alin European Journal of Mineralogy (2013), 25Detailed reference viewed: 8 (0 ULg) Le CNSA, oeuvre purement humanitaire? Les comités locaux de secours et d'alimentation pendant la Grande GuerreDelhalle, Sophie E-print/Working paper (2012)Cette analyse propose un regard particulier sur le travail des membres des comités locaux de secours et d'alimentation pendant la Grande Guerre dans la région liégeoise.Detailed reference viewed: 33 (2 ULg) La CNSW et les projets supranationaux – Enjeux, atouts et obstacles d’un changement d’échelle et d’une confrontation d’approches, pour une compréhension et une valorisation élargies de l’information pédologiqueLegrain, Xavier ; Colinet, Gilles Conference (2016, December 14)Detailed reference viewed: 14 (0 ULg) CNV and dopamine receptor reactivity: correlations with the apomorphine test.Timsit-Berthier, Martine; Mantanus, Huguette; Marissiaux, Pascale et alin McCallum, W. C. (Ed.) Cerebral psychophysiology: studies in event-related potentials. (1986)Detailed reference viewed: 21 (0 ULg) CNV in mood disordersPapart, Patrick ; Ansseau, Marc ; Timsit-Berthier, M.in Recent advances in event-related brain potential research (1996)Detailed reference viewed: 15 (0 ULg) CO emissions of fuel oil boilers in transient and cyclic regimes: performance of burners without and with “antidrip” systemsMakaire, Danielle ; Ngendakumana, Philippe Conference (2007, September)CO emission peaks from fuel oil boilers in transient and cyclic regimes have been measured in previous studies. In order to evaluate these emissions, tests have been performed without and with an anti ... [more ▼]CO emission peaks from fuel oil boilers in transient and cyclic regimes have been measured in previous studies. In order to evaluate these emissions, tests have been performed without and with an anti-drip system installed on the burner nozzle. Flue gas composition was measured using classical analysers (CO2, O2, CO and NOx) and CO emissions results were analysed and discussed. It was found that the anti-drip system reduced cold start CO emissions and did not affect steady-state CO emissions. At first, no reduction was noticed when the burner was cycling. Further investigation indicated that there was an experimental artefact caused by an air volume trapped in the pressure measurement system. When the air was purged and with the anti-drip system, CO peaks when the burner was cycling were strongly reduced and CO emissions remained under European standards limits. [less ▲]Detailed reference viewed: 45 (6 ULg) CO emissions of fuel oil boilers used in domestic heatingCuevas, Cristian; Ngendakumana, Philippe Conference (2006, August)To assess the CO emissions of fuel oil boilers, tests have been performed on a boiler in transient and steady state regimes. The tests were performed so that the output power (about 370 kW) was kept ... [more ▼]To assess the CO emissions of fuel oil boilers, tests have been performed on a boiler in transient and steady state regimes. The tests were performed so that the output power (about 370 kW) was kept constant in steady state regime (same water flow rate and inlet and outlet temperatures). On the other hand, the oxygen content of the flue gas in the chimney was kept constant (around 3%). Classical gas analysers were used to measure the CO2, O2, CO and NOx concentrations in the flue gas. The two main parameters investigated are the nozzle capacity and the corresponding fuel injection pressure to keep the same burner consumption. Four nozzles whose capacity ranges from 30 to 45 kg/h (at a fuel supply pressure of 20 bar) were fitted on the burner equipping the fuel oil boiler. All the nozzles used are spill return and 45° spray angle type. The tests performed showed that in steady-state regime, the CO emissions are very low compared to the limits established by the European standard (110 mg/kWh of energy consumption). A comparison with calculated CO emissions shows also that the values obtained in equilibrium conditions are too high. On the other hand, in the transient regime (start-up regime for a cycling boiler), the CO emissions are not negligible and increase significantly if a high capacity nozzle is fitted on the fuel oil burner. In short, the paper demonstrates that in order to increase the boiler thermal efficiency and thus to reduce CO2 emissions (for the same output power), one has to avoid the CO emissions in the transient regime. When performing a replacement of the burner nozzle, a low capacity nozzle associated with an adjustment of a high fuel injection pressure is recommended, since a reduction of CO emissions in the starting-up regime is achieved and, on the other hand, the thermal efficiency and the pollutants emissions of the fuel oil boiler in steady state regime are not affected. [less ▲]Detailed reference viewed: 67 (0 ULg) CO Gas Inside the Protoplanetary Disk Cavity in HD 142527: Disk Structure from ALMAPerez, S.; Casassus, S.; Ménard, F. et alin Astrophysical Journal (2014), 798Inner cavities and annular gaps in circumstellar disks are possible signposts of giant planet formation. The young star HD 142527 hosts a massive protoplanetary disk with a large cavity that extends up to ... [more ▼]Inner cavities and annular gaps in circumstellar disks are possible signposts of giant planet formation. The young star HD 142527 hosts a massive protoplanetary disk with a large cavity that extends up to 140 AU from the central star, as seen in continuum images at infrared and millimeter wavelengths. Estimates of the survival of gas inside disk cavities are needed to discriminate between clearing scenarios. We present a spatially and spectrally resolved carbon monoxide isotopologue 2-1 line of $^12$CO, $^13$CO, and C[SUP]18[/SUP]$O obtained with the Atacama Large Millimeter/submillimeter Array (ALMA). We detect emission coming from inside the dust-depleted cavity in all three isotopologues. Based on our analysis of the gas in the dust cavity, the$^12$CO emission is optically thick, while$^13$CO and C[SUP]18[/SUP]$O emissions are both optically thin. The total mass of residual gas inside the cavity is \~1.5-2 M $_Jup$. We model the gas with an axisymmetric disk model. Our best-fit model shows that the cavity radius is much smaller in CO than it is in millimeter continuum and scattered light observations, with a gas cavity that does not extend beyond 105 AU (at 3$\sigma$). The gap wall at its outer edge is diffuse and smooth in the gas distribution, while in dust continuum it is manifestly sharper. The inclination angle, as estimated from the high velocity channel maps is 28 \plusmn 0.5 deg, higher than in previous estimates, assuming a fix central star mass of 2.2 M $_&sun;$. [less ▲]Detailed reference viewed: 27 (1 ULg) CO measurements from the ACE-FTS satellite instrument: data analysis and validation using ground-based, airborne and spaceborne observationsClerbaux, Catherine; George, Maya; Turquety, Solène et alin Atmospheric Chemistry and Physics (2008), 8The Atmospheric Chemistry Experiment (ACE) mission was launched in August 2003 to sound the atmosphere by solar occultation. Carbon monoxide (CO), a good tracer of pollution plumes and atmospheric ... [more ▼]The Atmospheric Chemistry Experiment (ACE) mission was launched in August 2003 to sound the atmosphere by solar occultation. Carbon monoxide (CO), a good tracer of pollution plumes and atmospheric dynamics, is one of the key species provided by the primary instrument, the ACE-Fourier Transform Spectrometer (ACE-FTS). This instrument performs measurements in both the CO 1-0 and 2-0 ro-vibrational bands, from which vertically resolved CO concentration profiles are retrieved, from the mid-troposphere to the thermosphere. This paper presents an updated description of the ACE-FTS version 2.2 CO data product, along with a comprehensive validation of these profiles using available observations (February 2004 to December 2006). We have compared the CO partial columns with ground-based measurements using Fourier transform infrared spectroscopy and millimeter wave radiometry, and the volume mixing ratio profiles with airborne (both high-altitude balloon flight and airplane) observations. CO satellite observations provided by nadir-looking instruments (MOPITT and TES) as well as limb-viewing remote sensors (MIPAS, SMR and MLS) were also compared with the ACE-FTS CO products. We show that the ACE-FTS measurements provide CO profiles with small retrieval errors (better than 5% from the upper troposphere to 40 km, and better than 10% above). These observations agree well with the correlative measurements, considering the rather loose coincidence criteria in some cases. Based on the validation exercise we assess the following uncertainties to the ACE-FTS measurement data: better than 15% in the upper troposphere (8–12 km), than 30% in the lower stratosphere (12–30 km), and than 25% from 30 to 100 km. [less ▲]Detailed reference viewed: 77 (14 ULg) CO spiral arms in the outer disk of HD 142527 with ALMAChristiaens, Valentin ; Casassus, Simon; Perez, Sebastian et alin Iono, Daisuke; Wootten, Al; Testi, Leonardo (Eds.) REVOLUTION IN ASTRONOMY WITH ALMA: THE THIRD YEAR (2014)Detailed reference viewed: 16 (6 ULg) CO spiral arms in the outer disk of HD 142527 with ALMAChristiaens, Valentin ; Casassus, Simon; Perez, Sebastian et alPoster (2014)Detailed reference viewed: 18 (3 ULg)