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See detailProduction of tumour necrosis factor-alpha, interferon-gamma and interleukin-2 by peripheral blood mononuclear cells of subjects suffering from rheumatoid arthritis
Franchimont, P.; Reuter, A.; Vrindts-Gevaert, Y. et al

in Scandinavian Journal of Rheumatology (1988), 17(3), 203-212

Using radio-immunoassay methods, the production of tumour necrosis factor-alpha (TNF-alpha), interleukin-2 (IL-2), and interferon-gamma (IFN-gamma) released by peripheral blood mononuclear cells (PBMC ... [more ▼]

Using radio-immunoassay methods, the production of tumour necrosis factor-alpha (TNF-alpha), interleukin-2 (IL-2), and interferon-gamma (IFN-gamma) released by peripheral blood mononuclear cells (PBMC), maintained in culture and stimulated by phytohemagglutinin (PHA), was measured in normal subjects and patients with active or inactive rheumatoid arthritis (RA). Results indicated a dissociation between mitogenic response and secretion of mediators by PBMC under the influence of PHA in both normal controls and in patients with rheumatoid arthritis (RA). While [3H]thymidine incorporation was characterized by a rather bell-shaped curve with increasing concentrations of PHA, IL-2 and TNF-alpha displayed a linear dose-dependent increase. [3H]thymidine uptake by PBMC was in the same range in normal subjects as in patients with active and inactive RA, although cytokine secretion differed. The PBMC of patients with active RA produced less TNF-alpha, IL-2, and IFN-gamma than did those of the controls. In cases of inactive RA, the secretory response varied from subject to subject; mean values did not differ from those of normal subjects, except for those of IL-2 (p less than 0.01). The significance and the clinical relevance of these findings are discussed. [less ▲]

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See detailPRODUCTION OF XANTHAN GUM FROM XANTHOMONAS CAMPESTRIS NRRL B-1459 BY FERMENTATION OF DATE JUICE PALM BY-PRODUCTS (PHOENIX DACTYLIFERA L.)
Ben Salah, Riadh; Chaari, Kacem; Besbes, Souhail et al

in Journal of Food Process Engineering (2011), 34(2), 457-474

In this work, we studied the possibility to use date juice for xanthan gum production by Xanthomonas campestris NRRL B-1459. The results showed that this strain has a high ability to metabolize date juice ... [more ▼]

In this work, we studied the possibility to use date juice for xanthan gum production by Xanthomonas campestris NRRL B-1459. The results showed that this strain has a high ability to metabolize date juice. The data on optimization of physiological conditions of fermentation, pH, temperature, inoculum's size, glucose and nitrogen concentration showed that the maximum xanthan yield of 24.5 g/L was obtained from 60 g/L glucose, 3 g/L ammonium sulphate when batch fermentation was carried with 5% inoculum's size at pH 7, 28C, 48 h, on a rotary orbital shaker at 180 rpm. The polysaccharide purified by high performance liquid chromatography and analyzed by thin layer chromatography contained glucose, glucoronic acid and mannose. PRACTICAL APPLICATIONS Agri-food by-products rich in sugars may be used to produce high added value food ingredients such as xanthan gum. No work has studied the production of this polysaccharide from date. This study is focused on given value addition to date by-product (hard texture) by production of xanthan gum. The effect of several parameters (pH, temperature, inoculum's size, agitation speed, nitrogen source and carbon concentration) on production yield was investigated. [less ▲]

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See detailProduction of ß-galactosidase from a thermotolerant yeast strain.
Thonart, Philippe ULg; Baijot, B.; Crahay, V.

Poster (1984, September)

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See detailProduction of γ-Decalactone by a Psychrophilic and a Mesophilic Strain of the Yeast
Alchihab, Mohamed ULg; Destain, Jacqueline ULg; Aguedo, Mario ULg et al

in Applied Biochemistry and Biotechnology (2009), 158

Among 18 psychrophilic strains isolated near the Antarctic Station, the psychrophilic <br />strain Rhodotorula aurantiaca A19 was selected for its ability of growth and γ- <br />decalactone production at ... [more ▼]

Among 18 psychrophilic strains isolated near the Antarctic Station, the psychrophilic <br />strain Rhodotorula aurantiaca A19 was selected for its ability of growth and γ- <br />decalactone production at low temperatures. The effects of temperature, initial pH, and castor <br />oil concentration on the growth and γ-decalactone production by a psychrophilic and a <br />mesophilic strain of R. aurantiaca were investigated. The highest γ-decalactone production <br />in flasks (5.8 g/l) was obtained with the strain A19 at 14 °C and initial pH 7.0 in medium <br />containing 20 g/l castor oil. On the other hand, these factors did not affect the production of <br />γ-decalactone by the mesophilic strain. In fermentor, a γ-decalactone concentration of 6.6 g/l <br />was reached with the strain A19, whereas a maximum of 0.1 g/l was obtained with the <br />mesophilic strain. Our results suggest that the ability to synthesize γ-decalactone is a <br />particularity of the strain A19, since the mesophilic strain (no. 30645) produced small amounts, <br />and the other (no. 31354) did not exhibit this property. It is, to our knowledge, the first report of γ-decalactone production by R. aurantiaca and furthermore by a psychrophilic yeast strain. <br />Moreover, the amount of γ-decalactone obtained in fermentor with the strain 19 was on the <br />order of concentrations usually described in patents. [less ▲]

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See detailProduction of γ-decalactoned by the yeast Yarrowia lipolytica using different ricinoleic acid sources: comparison of different start-up strategies
Gomes, N.; Aguedo, Mario ULg; Teixeira, J.A. et al

in CONGRESSO NACIONAL MICRO'07 BIOTEC'07-XXXIII JPG (2007, November)

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See detailLa production photosynthétique d'oxygène
Franck, Fabrice ULg

Conference given outside the academic context (2010)

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See detailProduction Planning in Automated Manufacturing
Crama, Yves ULg; Oerlemans, Alwin; Spieksma, Frits

Book published by Springer-Verlag - première édition (1994)

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See detailProduction planning problems in printed circuit board assembly
Crama, Yves ULg; van de Klundert, Joris; Spieksma, Frits CR

in Discrete Applied Mathematics (2002), 123(1-3), 339-361

This survey describes some of the main optimization problems arising in the context of production planning for the assembly of printed circuit boards. The discussion is structured around a hierarchical ... [more ▼]

This survey describes some of the main optimization problems arising in the context of production planning for the assembly of printed circuit boards. The discussion is structured around a hierarchical decomposition of the planning process into distinct optimization subproblems, addressing issues such as the assignment of board types to machine groups, the allocation of component feeders to individual machines, the determination of optimal production sequences, etc, The paper reviews the literature on this topic with an emphasis on the most recent developments, on the fundamental structure of the mathematical models and on the relation between these models and some 'environmental' variables such as the layout of the shop or the product mix. (C) 2002 Elsevier Science B.V, All rights reserved. [less ▲]

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See detailProduction porcine et environnement
Debouche, Charles ULg

Scientific conference (2001, September 19)

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See detailProduction potentielle de bioéthanol, de biométhane et de pellets à partir des déchets de biomasse lignocellulosique du bananier (Musa spp.) au Cameroun
Kamdem, Irenée ULg; Tomekpe, Kodjo; Thonart, Philippe ULg

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2011), 15(3), 471-483

Like most African countries who are producers and exporters of banana, Cameroon is facing a major energy deficit. Yet, the country is generating annually about 4,500,000 tons of fresh banana plant ... [more ▼]

Like most African countries who are producers and exporters of banana, Cameroon is facing a major energy deficit. Yet, the country is generating annually about 4,500,000 tons of fresh banana plant lignocellulosic waste biomass matter equivalent to 402,750 tons of dry matter. The dry matter contained about 80,57% organic matter which are not exploited. Under the sustainable development, which is linked to environmental protection, the biotransformation of these residues can potentially produce about 93,800; 92,133; 447,500 tons of bioethanol, biomethane and pellets respectively. The waste transformation could reduce the energy deficit and create jobs opportunities. Productions of this renewable energy or biofuel also constitute a new area which could assure an important source of income for the banana cultivators and the entire country. [less ▲]

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See detailProduction subjective de rêve en milieu carcéral : une hypothèse adaptative
Englebert, Jérôme ULg; Gauthier, Jean-Marie ULg; Jacquemart, Catherine

Poster (2011)

Une étude sur le rêve n’est pas sans poser plusieurs questions épistémologiques et méthodologiques majeures. La première d’entre elles tient à l’essence même du rêve qui est un objet d’étude particulier ... [more ▼]

Une étude sur le rêve n’est pas sans poser plusieurs questions épistémologiques et méthodologiques majeures. La première d’entre elles tient à l’essence même du rêve qui est un objet d’étude particulier, étant strictement subjectif et difficilement objectivable. Le rêve n’existe dans la vie consciente qu’au passé ; il a une conscience uniquement rétrospective. Il existe donc un décalage temporel entre l’activité onirique et le discours sur le rêve. Ce hiatus temporel condamne donc le rêve à nous échapper dans sa finitude et pousse le chercheur à capituler face à la connaissance ultime et globale du monde imaginaire de l’individu. L’étude que nous avons réalisée se veut d’inspiration phénoménologique. Nous avons administré un questionnaire (questionnaire élaboré sous la supervision d’un collège d’experts travaillant en milieu carcéral) à une population de 48 détenus (43 hommes et 5 femmes) et à une population contrôle (appariée pour l’âge et le niveau d’étude). Le questionnaire était scindé en deux parties pour les détenus (rapport aux rêves avant l’enfermement [Gd.0] / rapport aux rêves maintenant [Gd.1]) et celui pour la population contrôle ne comprenait qu’une partie (rapport aux rêves maintenant [Gc]). Enfin, nous avons isolé trois groupes au sein de la population carcérale : Cp : Courte peine effectuée (maximum 90 jours), MP : Moyenne peine effectuée (plus de 90 jours et maximum 2 ans), LP : Longue peine effectuée (plus de 2 ans). Les résultats, qu’il conviendra de discuter dans le détail, mettent en évidence que l’activité onirique serait un mécanisme que le détenu utilise pour s’adapter à l’univers carcéral (la fréquence subjective de rêve et l’intérêt porté à ses rêves sont significativement plus importants pour le Gd.1 que le Gd.0 et le Gc). Mais ce constat tend à diminuer en fonction de la durée de la peine (au-delà de 2 ans d’enfermement [LP]). Nous pouvons expliquer cette diminution significative par un effet d’habituation (le rêve aurait permis un retour à une homéostasie psychique suffisante) ou par une abrasion du mécanisme. En effet, le rêve ne procurerait aucune modification dans le réel puisque le quotidien de l’enfermement reste le même. Privée de boucle de rétroaction, la fonction adaptative du rêve s’essoufflerait. [less ▲]

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See detailProduction, automatic delivery and bolus injection of O-15 water for positron emission tomography studies
VanNaemen, John; Monclus, Michel; Damhaut, Philippe et al

in Nuclear Medicine and Biology (1996), 23(4), 413-416

An automatic system allowing repetitive bolus injection of oxygen-15-labeled water for PET studies is described in this report. The production of this radiopharmaceutical by the 16O(p,pn)15O nuclear ... [more ▼]

An automatic system allowing repetitive bolus injection of oxygen-15-labeled water for PET studies is described in this report. The production of this radiopharmaceutical by the 16O(p,pn)15O nuclear reaction on H216O, its purification and delivery nearby the PET camera, the injection system, and the quality controls are presented. [less ▲]

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See detailProduction, Formulation And Antagonistic Activity Of The Biocontrol Like-Yeast Aureobasidium Pullulans Against Penicillium Expansum
Mounir, R.; Durieux, A.; Bodo, E. et al

in Biotechnology Letters (2007), 29(4), 553-559

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See detailProduction, Operation and Robustness Module
Caprace, Jean-David ULg; Bair, Frédéric ULg; Hübler, Michael et al

(2009, September)

Nowadays, simulation and Life Cycle Cost (LCC) assessment becomes more and more important in shipbuilding industry. In order to survive in the competitive market environment, manufacturers now have to ... [more ▼]

Nowadays, simulation and Life Cycle Cost (LCC) assessment becomes more and more important in shipbuilding industry. In order to survive in the competitive market environment, manufacturers now have to consider reducing the cost of the entire life cycle of a product, called LCC. This research was initiated with the idea of developing a methodology/framework to be able to assess the life cycle cost/earning of production and maintenance/repair with respect to the scantlings structural optimization variables to be used during the conceptual ship design stage. Three main modules as been implemented during this project: A life cycle cost/earning of production and maintenance/repair, a detailed Discrete Event Simulation (DES) for production and scheduling and a design robustness of the structural solution related to various fabrication and operational parameters. These three modules as well as the main results are briefly presented here. [less ▲]

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See detailProduction, Private Economy and State Entanglement in Early Northern Mesopotamia
Mas, Juliette ULg

Conference (2014, June)

Ancient economic systems from Southern and Central Mesopotamia are quite well known when Northern Mesopotamia ones remain less known from this point of view. If we already know that, during Bronze Age ... [more ▼]

Ancient economic systems from Southern and Central Mesopotamia are quite well known when Northern Mesopotamia ones remain less known from this point of view. If we already know that, during Bronze Age, households played a deciding role in several kinds of production, their degree of dependence or independence to the State still has to be cleared. The archaeological data clearly show that private workshops, set up in private houses, could be very efficient and specialized. Furthermore, these economic entities could be assimilated to private enterprises, which were able to handle their own administrative duties. On the other hand, we know from the texts that the Palace and the temples were also a main element of ancient economic systems. If public administrations should, in some cases, have supplied raw materials, hired workforce, and dealt with the distribution of produced goods, it seems that the production didn’t take place in the palace itself. Dealing both with archaeological and textual data, could help to better define the role and the importance of both public and private components in early Mesopotamian economic systems. [less ▲]

Detailed reference viewed: 5 (0 ULg)