Local buckling in case of fire

Conference (2000, October 13)

Prévention des infections périnatales à streptocoques du groupe B.

Scientific conference (2000, October 05)

HST/STIS Observations of a Dawn Auroral Storm on Jupiter

in Bulletin of the American Astronomical Society (2000, October 01)

The HST/STIS recorded a detailed time series of images and spectra of the UV emissions from a dawn auroral storm on Jupiter on 21 Sept. 1999. The images show complex and evolving fine structure in the ... [more ▼]

The HST/STIS recorded a detailed time series of images and spectra of the UV emissions from a dawn auroral storm on Jupiter on 21 Sept. 1999. The images show complex and evolving fine structure in the storm, while the emission center remained along the main oval and near dawn in magnetic local time. We serendipitously recorded low resolution UV spectra of the north-south spatial distribution of the auroral emissions. These spectra show far stronger hydrocarbon absorptions than observed in any previous auroral spectra. This indicates an unusually deep penetration of the incident primary particles with respect to the neutral atmosphere, and correspondingly high energy of the primary particles. We can thus use these spectra to identify many complex hydrocarbons in Jupiter's auroral atmosphere which are not normally measured in auroral spectra. These results will be presented along with model fits to the spectra derived both from fitting the observed hydrocarbon absorption features and from comparison with a photochemical model for the expected composition of the auroral atmosphere. This research has been supported by grant GO-8171.01-97A from the Space Telescope Science Institute to the University of Michigan. [less ▲]

The isotope ratios [SUP]12[/SUP]C/[SUP]13[/SUP]C and [SUP]14[/SUP]N/[SUP]15[/SUP]N in comet C/1995 O1 (Hale-Bopp)

in Bulletin of the American Astronomical Society (2000, October 01)

The abundance ratios of stable isotopes of the light elements in comets may provide clues of cosmogonical significance. Measuring isotopic ratios in an optical cometary spectrum is, however, a rather ... [more ▼]

The abundance ratios of stable isotopes of the light elements in comets may provide clues of cosmogonical significance. Measuring isotopic ratios in an optical cometary spectrum is, however, a rather difficult task for different reasons. Such measurements require, in particular, very high spectral resolution and are feasible so far only on bright objects. In 1997 we observed comet Hale-Bopp with the 2.6 m Nordic Optical Telescope on La Palma, Canary Islands, with a view to estimating the [SUP]12[/SUP]C/[SUP]13[/SUP]C abundance ratio. About twenty high-resolution (λ /Πλ ~ 70000) spectra of the strong CN Violet (0,0) band were secured with the SOFIN spectrograph from 7 to 13 April. The heliocentric and geocentric distances of the comet were then close to 0.9 AU and 1.4 AU, respectively. While the data do show the expected lines of the [SUP]13[/SUP]C[SUP]14[/SUP]N isotopic molecule, we have been surprised to find in addition a number of very weak features, which are real and turn out to be positioned very near to the theoretical wavelengths of lines pertaining to the R branch of [SUP]12[/SUP]C[SUP]15[/SUP]N. After a short description of the reduction and analysis of the data our paper discusses the results derived for [SUP]12[/SUP]C/[SUP]13[/SUP]C and [SUP]14[/SUP]N/[SUP]15[/SUP]N as well as their possible implications. We also present a brief review of the carbon and nitrogen isotopic ratios in various solar system objects and consider the question whether any nucleosynthesis site(s) is (are) known where pairs of values similar to those we measure in comet Hale-Bopp could be produced. [less ▲]

Contribution à l’étude de la fonction musculaire du sujet fibromyalgique

in Actes du symposium « Evidence Based Physiotherapy » de la Fédération Nationale des Docteurs et Licenciés en Kinésithérapie (2000, October)

Adaptive Applications over Active Networks: Case Study on Layered Multicast

in IP Networks Versus conventional Switched Networks (2000, October)

In this paper we study the potential and limitations of active networks in the context of adaptive applications. We present a survey of active networking research applied to adaptive applications, and a ... [more ▼]

In this paper we study the potential and limitations of active networks in the context of adaptive applications. We present a survey of active networking research applied to adaptive applications, and a case study on a layered multicast active application. This active application is a congestion control protocol that selectively discards data in the active routers, and prunes multicast tree branches affected by persistent congestion. Our first results indicate that active networks can indeed help such an application to adapt to heterogeneous receivers, with a minimum amount of state overhead, equivalent to that of a single IP multicast group. [less ▲]

Rééducation raisonnée des lésions opérées du ligament croisé antérieur du genou

in Kiné Acta (2000), 356

2-(2-Oxoimidazolidinyl)Ethyl 2-Methylprop-2-Enoate

in Acta Crystallographica Section C-Crystal Structure Communications (2000), 56((Pt 10)), 1258-9

In the crystal structure of the title compound, C(9)H(14)N(2)O(3), the molecules are linked by N-H.O=C bonds into chains parallel to [001]. Large crystals are readily obtained, presumably because of the ... [more ▼]

In the crystal structure of the title compound, C(9)H(14)N(2)O(3), the molecules are linked by N-H.O=C bonds into chains parallel to [001]. Large crystals are readily obtained, presumably because of the hydrogen bonds and an energetically stable conformation of the molecule. [less ▲]

Comparative Evaluation of Four Detectors in the High-Performance Liquid Chromatographic Analysis of Chiral Nonaromatic Alcohols

in Journal of Chromatographic Science (2000), 38(10), 450-7

A comparative evaluation of ultraviolet, polarimetric, refractive index, and evaporative light-scattering detection coupled with high-performance liquid chromatography has been developed for the ... [more ▼]

A comparative evaluation of ultraviolet, polarimetric, refractive index, and evaporative light-scattering detection coupled with high-performance liquid chromatography has been developed for the separation and quantitation of the enantiomers of chiral nonaromatic alcohols, some of which are intermediates in the synthesis of chiral drugs. (R,S)-3-tert-butylamino-1,2-propanediol; (R,S)-glycidol; and (R,S)-1-(4-morpholino)-2-octanol are selected as model compounds in order to compare the detection sensitivity and the linearity of the response with the four detectors. Separation of the enantiomers is performed using chiral stationary phases in normal-phase liquid chromatography. A one-day validation is achieved for (S)-3-tert-butylamino-1,2-propanediol with each detector, and limits of quantitation are determined for the three compounds. Advantages and limitations of the four detectors are discussed. [less ▲]

Multicriteria and multiactors aspects of an interactive tool aiding to sketch the building envelope during the first stages of the architectural design

Conference (2000, October)

The main objective of the present study is to introduce a rational method of aiding to design the envelope of a building, during the sketch design. The design method has for both objectives the respect of ... [more ▼]

The main objective of the present study is to introduce a rational method of aiding to design the envelope of a building, during the sketch design. The design method has for both objectives the respect of building costs (for the construction itself and in use), and the improvement of the energy performance. In the multicriteria and multiactors context, this interactive tool is using decision-making aids, in order to improve the architectural response to the client’s and regulations requirements, while aiding: - the project authors in their conception tasks, by making up the project architectural forces, in accordance with the actors’ objectives; - and the client in his participation in the multiple partners negotiation. [less ▲]