Heat and mass balances on an anaerobic digester treating agricultural wastes

in Biomass for Energy, Environment, Agriculture and Industrie (1995)

Crues, travaux d'aménagement, options futures et modélisations dynamiques

in Voies navigables intérieures et prévention des inondations (1995)

A smart radiation sensor for environmental monitoring

in Proceedings ISES 95 Congress (1995)

A seven year campaign on WR 22

in Wolf-Rayet Stars: Binaries; Colliding Winds; Evolution. International Astronomical Union. Symposium no. 163 (1995)

Not Available

A la conquète d'une légitimité artistique: les écrits belges sur le jazz de 1920 à 1945

in Actes du Quatrième Congrès de l'Association des Cercles Francophones d'Histoire et d'Archéologie de Belgique (1995)

Perception of Environmental Health by Children in Cities

in Case studies and sub-plenary presentations, International Healthy and Ecological Cities Congress (1995)

Distribution des efforts dans les assemblages

in Actes de la Journée d'études sur les assemblages dans la construction métallique (1995)

Application clinique de la scintigraphie pulmonaire chez le cheval

in Proceedings: 4e congrès de médecine et chirurgie de Genève (1995)

Fréquence et importance du charriage dans les rivières à charge de fond caillouteuse

in Geomorphologie (1995)

Pathological investigations on sperm whales stranded on Belgian and Dutch coasts

in Sperm whale deaths in the North Sea Science and management (1995)

Entraînement à l'autoévaluation : une comparaison filles/garçons à l'université

in Des Lierres, Thérèse (Ed.) Actes du colloque de l'AIPU 'Enseignement supérieur : stratégies d'enseignement appropriées, Hull, Université du Québec, 1995 (1995)

The stiffness model of revised Annex J of Eurocode 3

in Proceedings of the Third International Workshop on Connections in Steel Structures (1995)

Simple On-the-fly Automatic Verification of Linear Temporal Logic

in Dembinski, Piotr; Sredniawa, Marek (Eds.) Proceedings of the Fifteenth IFIP WG6.1 International Symposium on Protocol Specification, Testing and Verification (1995)

We present a tableau-based algorithm for obtaining an automaton from a temporal logic formula. The algorithm is geared towards being used in model checking in an “on-the-fly” fashion, that is the ... [more ▼]

We present a tableau-based algorithm for obtaining an automaton from a temporal logic formula. The algorithm is geared towards being used in model checking in an “on-the-fly” fashion, that is the automaton can be constructed simultaneously with, and guided by, the generation of the model. In particular, it is possible to detect that a property does not hold by only constructing part of the model and of the automaton. The algorithm can also be used to check the validity of a temporal logic assertion. Although the general problem is PSPACE-complete, experiments show that our algorithm performs quite well on the temporal formulas typically encountered in verification. While basing linear-time temporal logic model-checking upon a transformation to automata is not new, the details of how to do this efficiently, and in “on-the-fly” fashion have never been given. [less ▲]

Radial Return Extensions for Visco-Plasticity and Lubricated Friction

in Rocha, M. M.; Riera, J. D. (Eds.) SMIRT-13 International Conference on Structural Mechanics and Reactor Technology (1995)

Comparative analysis of the lubricating power between a pure mineral oil and biodegradable oils of the same mean iso grade

in Dowson, D.; Taylor, C. M.; Childs, T. H. C. (Eds.) et al Lubricants and lubrication : proceedings of the 21th Leeds-Lyon symposium on tribology held at the Institute of Tribology , University of Leeds U.K., 6th-9th September 1994 (1995)

n this paper, we compare the viscosimetric and tribological properties of some vegetable oils and one synthetic ester with a pure mineral oil. The viscosimetric characteristics of lubricants show that ... [more ▼]

n this paper, we compare the viscosimetric and tribological properties of some vegetable oils and one synthetic ester with a pure mineral oil. The viscosimetric characteristics of lubricants show that both vegetable oils and ester have a higher viscosity index than mineral oil. The test results show that all tested oils have a somewhat dilatant behaviour.The oiliness, antiwear and extreme pressure properties of lubricants have been studied respectively with a Stribeck machine and a four-ball machine. We have noted the following: On the four-ball machine, extreme pressure results expressed in terms of pressure wear index and mean hertz load show that the higher performance is obtained with the vegetable oils. Extreme pressure results expressed in terms of weld load, do not show a big difference between the tested oils. Antiwear results expressed in terms of wear scar show that die highest performances are obtained with vegetable oils. On the Stribeck machine, oiliness results expressed in terms of friction coefficient indicate that: in the regime of fluid lubrication, tested oils have me same behaviour; in die boundary lubrication regime, both vegetable oils and synthetic, ester have a better response uian mineral oil. [less ▲]

A Review of the Soft Pomeron

in J. Lemonne, J.; Vander Velde, C.; Verbeure. (Eds.) International Europhysics Conference on High-Energy Physics (1995)

Prosztaglandin kezelés hatása a sárgatestre, a plasma progeszteron koncentrációra és a graaf-féle tüszöre

in Szenci, Ottó; Brydl, Endre; Jurkovich, Viktor (Eds.) Proceedings: 16.Magyar Buiatrikus Kongresszus - The effect of herd health of cattle, sheep and goat on the profitable production (1995)

The results of three different prostaglandin treatment protocols are summarized in our summary: In the first experiment the effects of different doses (0 mg, 25 mg vs 35 mg) of prostaglandin treatments ... [more ▼]

The results of three different prostaglandin treatment protocols are summarized in our summary: In the first experiment the effects of different doses (0 mg, 25 mg vs 35 mg) of prostaglandin treatments from the day of treatment (Day 0) were examined. The percentage changes relative to the corpus luteum area decreased, and the percentage changes relative to the largest follicle area increased faster, and even the oestrus started sonner in cocas treated with 35 mg PGF2a than in those treated with 25 mg PGF2a. However, these differences between groups were not statistically significant. At the same lime, the decrease in the percentage changes relative to the area of corpora lutea and to the concentrations of P4 was statistically significant in both groups. In the second experiment treatment of dairy cows with 2 luteolytic dosages of PGF2a or its synthetic analogue at an 8-h interval resulted in more cows (non-significantly) (18 vs. 21) being observed in oestrus within 5 d after treatment and having significantly higher conception rate (27,8% vs. 66,6%) than with 1 treatment. Further studies in progress should confirm the benefit of 2 prostaglandin treatments in a larger scale. At the same lime, the type and the number of prostaglandin treatments had no effect on the incidence of ovulations alter oestrus, the number of ovulations without oestrous signs, the number of cows without oestrus and ovulation, and the average lime from treatment to oestrus. In the third experiment the lime of ovulation was examined alter detected oestrus and A.I. (Day 0) in prostaglandin treated and non-treated dairy cows. Large variations in the area of the CL were detected in the prostaglandin treated and untreated cows. The areas of the largest follicles in treated cows were somewhat smaller during the experiment, than those in untreated cows however those differences between the groups and within the groups were not statistically significant. The area of the largest follicle in cows with no ovulation also did not differ significantly. Some of the cows (n=7) in treated and non-treated groups did not ovulate at all during the experiment. The mean area of the ovulatory follicle on the day before ovulation was somewhat greater but not significantly, if ovulation occurred later regarding to AI, The overall conception rate was > 50% in both groups, but when the cows ovulated too early or too late in relation to the lime of AI the conception rate was significantly louver, therefore determination of the optimal lime for AI is of great practical importance. If ovulation does not occur within two days alter AI second AI may be recommended. Further studies are needed to evaluate the benefit of the second AI [less ▲]

Central neuroblastoma in a 14 year-old girl

in 4th International Symposium on Neuroblastoma Screening (1995)

Méningiome volumineux chez l'enfant: discussion à propos d'un cas chez une fillette de 5 ans

in Société Belge de Neurologie Pédiatrique (1995)

On the necessity to consider varying parameters in the land subsidence computations

in Barends, F. B. J.; Brouwer, F. J. J.; Schröder, F. H. (Eds.) Land Subsidence (Proc. of the Vth Int. Symp.) (1995)

Evaluation of the correlation between "in vitro" and "in vivo" release of sulfamethazine from a long-acting ovine bolus

in Proceedingsof 1st World Meeting on Pharmaceutics, Biopharmaceutics and Pharmaceutical Technology (1995)

Fumure azotée et protection fongicide des céréales d'hiver en Belgique

in Quatrième conférence internationale sur les maladies des plantes (1994, December 06)

The determination and the splitting of winter cereals nitrogen fertilisation as proposed and used in Belgium include three applications (tillering, beginning of stem elongation, flag leaf). While ... [more ▼]

The determination and the splitting of winter cereals nitrogen fertilisation as proposed and used in Belgium include three applications (tillering, beginning of stem elongation, flag leaf). While permitting to improve yield and haven quality, this largely contribute to limit croptogamic diseases development and thus the number of fungicide treatments needed to achieve an economic optimum. [less ▲]

GUESS, un logiciel pour s'entraîner à l'auto-estimation de sa compétence cognitive

in Weber, Jacques (Ed.) QCM et questionnaires fermés, actes du 3ème colloque international ESIEE, Marne-la-Vallée (1994, December)

La Belgique francophone : laboratoire de la télévision sans frontière

in Actes du Colloque du 6ème Forum Européen de la Télévision et du Cinéma (1994, November)

Effect of the carbohydrate fractions of pea seeds on the endogenous amino acid flow at the ileum of the pig.

in Proceeding of the 6th International Symposium on Digestive Physiology in Pigs, n°80. (1994, October)

Overhead transmission lines design. Some mechanical aspects.

in Proceedings of the ICPST'94 (1994, October)

3-DOF galloping model of power lines.

Temperature, Ozone, and Nitric Oxide Experiment (TONE) for the Thermosphere-Ionosphere-Mesosphere Energetics and Dynamics (TIMED) mission

in Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series (1994, September 01)

The temperature-ozone-nitric oxide experiment (TONE) on the thermosphere, ionosphere, mesosphere, energetics, and dynamics (TIMED) mission consists of two ultraviolet spectrometers and an infrared ... [more ▼]

The temperature-ozone-nitric oxide experiment (TONE) on the thermosphere, ionosphere, mesosphere, energetics, and dynamics (TIMED) mission consists of two ultraviolet spectrometers and an infrared photometer. A medium resolution spectrometer (MRS) covers the spectral region from 210 to 247 nm with 0.2 nm resolution, and a low resolution spectrometer/infrared photometer (LRS/IRP) covers the 235 to 320 nm region with 2.0 nm resolution, and measures the 1.27 micron emission from molecular oxygen excited by ozone photolysis. The Earth's limb is scanned by articulation mirrors which also serve as the field- of-view limiting elements. The TONE measures profiles of emission as a function of altitude on the Earth's limb. The primary measurements include profiles of Rayleigh scattered sunlight and 1.27 micron emission in the mesosphere and lower thermosphere, and fluorescent emission from nitric oxide in the upper mesosphere and thermosphere. The inverted radiance measurements will yield profiles of temperature, density, and ozone in the mesosphere, and temperature and nitric oxide density in the thermosphere with 2.5 km vertical resolution and 4.5 degree spatial resolution along the orbital path. The primary TONE measurements extend from 50 to 180 km and are fundamental to the science objectives of the TIMED mission. The broad capabilities of the TONE contribute significantly to the TIMED mission with a low-cost, highly reliable instrument based on a long heritage of space instruments built at the University of Colorado's Laboratory for Atmospheric and Space Physics. The TONE has heritage from spectrometers on Mariner 9, Pioneer Venus, the Solar Mesosphere Explorer, Galileo, and Cassini. [less ▲]

Structural Shape Optimization with Error Control

in Proceedings of 20th ASME Design Automation Conference (1994, September)

A robust and automatic shape optimization procedure is presented in this paper, which incorporates recent developments in the field of computer-aided design (CAD) of mechanical structures, such as ... [more ▼]

A robust and automatic shape optimization procedure is presented in this paper, which incorporates recent developments in the field of computer-aided design (CAD) of mechanical structures, such as geometric modelling, automatic selection of independent design variables, sensitivity analysis using reliable mesh perturbation schemes, error estimation and adaptive mesh refinement. A numerical example is given to show the efficiency of the procedure. [less ▲]

Modelling of Strain Localisation: Mesh Enrichment with Spectral Overlay or with Interface Elements.

in Proc. of the Europ-US Workshop on Fracture and Damage in Quasi Brittle Structures (1994, September)

An automatic adaptative remeshing for modelling of shear band

in Proc. of the 3rd European Conf. on Num. Meth. in Geotechnical Eng., ECONMIG'94 (1994, September)

Excretion of purine derivatives in urine of Belgian Blue bulls following duodenal infusion of purines from Torula yeast.

in Giesecke, D. (Ed.) Proceedings of the Society of Nutrition Physiology (1994, September)

Approach to the use of Near Infrared Spectrometry for the estimation of microbial nitrogen contamination of forages during ruminal incubation in nylon bag.

in Giesecke, D. (Ed.) Proceedings of the Society of Nutrition Physiology. (1994, September)

"Je mange bien à l'école" : présentation d'un projet innovateur de la Communauté française de Belgique

in Andrien, Michel (Ed.) Actes du colloque européen sur l'éducation nutritionnelle dans le cadre d'une école promotrice de santé (1994, September)

Short-circuit mechanical effect on bundled conductors- IEC 865 recommendations : confrontations with tests and numerical computations.

in Proceedings of the 6th ESCC (1994, September)

IEC 865 discussion with confrontations between tests and numerical computations.

Mechanical loads on overhead lines bundle conductors

in Proceedings of the 6th ESCC (1994, September)

Power lines subject to short-circuit mechanical loading may include budle collapse and pinch effect.A numerical investigation is performed and test comparisons are detailed.

Some Aeronomical Implications of Jupiter's Aurora

in Bulletin of the American Astronomical Society (1994, June 01)

Not Available

The spatial distribution of the UV color ratio of the Jovian aurora observed with the FOC/HST

in Bulletin of the American Astronomical Society (1994, June 01)

Not Available

A Group Communication Framework

in Bauerfeld, Wulf; Spaniol, Otto; Williams, F. (Eds.) Broadband Islands '94: Connecting with the End-User (1994, June)

This paper presents a general architectural model for group communications which are communications that may involve more than two parties. The concept of group is presented and the concept of group ... [more ▼]

This paper presents a general architectural model for group communications which are communications that may involve more than two parties. The concept of group is presented and the concept of group association, which is an instance of group communication, is analysed. Those group associations are modeled as a set of basic components called multicast conversations. At the service boundery, new architectural concepts are introduced to identify a group association as well as its multicast conversations. Then, facilities to handle the group associations and the multicast conversations are defined and the properties of data transfer on a group association are examined. Finally, the paper deals with aspects of group management. [less ▲]

Numerical Simulation of Hot Isostatic Pressing of Metal Powder: Influence of Constitutive Equations

in Acte du Powder Metallurgy World Congress (1994, June)

Prediction of the Semi-Rigid and Partial-Strength Properties of Structural Joints

in Proceedings of the SSRC Annual technical Session and Meeting (1994, June)

Observing with HST IV: Improvements in Observation Planning and Scheduling

in Bulletin of the American Astronomical SocietyAmerican Astronomical Society, Bulletin of the American Astronomical Society (1994, May 01)

Planning and scheduling Hubble Space Telescope observations is a formidable task. During the course of a year tens of thousands of exposures are taken on several thousand targets. Many observations are ... [more ▼]

Planning and scheduling Hubble Space Telescope observations is a formidable task. During the course of a year tens of thousands of exposures are taken on several thousand targets. Many observations are linked to others via scientific ``special requirements'' specified by the observer in the proposal. All observations are subject to numerous observing constraints such as Sun avoidance, occultation by the Earth, and spacecraft roll and power constraints. At the beginning of the HST mission, planning and scheduling work concentrated on the correct implementation and execution of observations. In Cycles 2 and 3 a major effort to increase the productivity of the observatory (while retaining quality) was begun and increased HST observation efficiency by about 50%. In Cycle 4, a major effort is underway to further improve the planning and scheduling process, in order to achieve stability in the observing program long-range plan, to improve the system's flexibility and responsiveness to change, and to increase visibility into the HST observing schedule as it evolves. This paper will describe the basis for these improvements, including the long-range planning criteria and timescales, the process of planning and scheduling and how changes will be supported. We will also describe the major observing constraints and how they are handled by the planning and scheduling system. Finally, we will discuss how recent advances in networking technology have made it possible to dramatically increase the ability of HST proposers to view the long- and short-range HST observing plans. Using a client program such as Mosaic or Lynx, an astronomer will be able to access a World Wide Web (WWW) server at the STScI to provide convenient access to HST observing proposals and their implementation status, and both the long-range and short-term observing schedules. [less ▲]

Mesh Enrichment with Spectral Band and Interface Finite Elements for the Modelling of the Shear Band Localisation

in Proc. of the 8th Int. Conf. of the Int. Ass. for Computer Methods and Advances in Geomechanics (1994, May)

Local measurement system for optical and electro-optic characterization and homogeneity analysis of photorefractive sillenite crystals

in Roosen, G.; Agullo-Lopez, F.; Schirmer, O. (Eds.) Proceedings of Symposium C on Photorefractive Materials of the 1994 E-MRS Spring Conference (1994, May)

Modellnig of the Hydromechanical Coupling for Non Linear Problems: Fully Coupled and Staggered Approaches

in Proc. of the 8th Int. Conf. of the Int. Ass. for Computer Methods and Advances in Geomechanics (1994, May)

Apprentissages et multimédias

in Les centres de ressources en langues : méthodologies, mise en valeur, optimisation de leur utilisation (1994, April)

Aperçu climatologique et implications phytotechniques pour les années culturales 1992 et 1993

in Fumure et protection phytosanitaire des céréales (1994, February)

Carabid beetles and nature conservation research in Belgium

in Desender, Konjev; Dufrêne, Marc; Loreau, Michel (Eds.) et al Carabid beetles Ecology and Evolution (1994)

Autour des solidarités privées au Moyen Âge : lignages et conscience lignagère au pays de Liège pendant la guerre des Awans et des Waroux (ca 1295-1335)

in Actes du LIe congrès de la Fédération des Cercles d’archéologie et d’histoire de Belgique. 4e Congrès de l'Association des Cercles francophones d'Histoire et d'Archéologie de Belgique, (Congrès de Liège, 20-23 VIII 1992), tome II (1994)

Le rôle politiques des métiers liégeois à la fin du Moyen Âge

in Lambrechts, Pascale; Sosson, Jean-Pierre (Eds.) Les métiers au Moyen Age : aspects économiques et sociaux : actes du colloque international de Louvain-la-Neuve, 7-9 octobre 1993 (1994)

Long term dynamics of carabid beetles in Belgium : a preliminary analysis on the influence of changing climate and land use by means of a database covering more than a century.

in Desender, Konjev; Dufrêne, Marc; Loreau, Michel (Eds.) et al Carabid Beetles Ecology and Evolution (1994)