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See detailIndications et sélection du candidat aux implants
Geerts, Sabine ULg

in Actualités Dentaires de l'Université de Liège (1995), 17

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See detailIndicators of erythrocyte formation and degradation in rats with either vitamin A or iron deficiency.
Roodenburg, A. J.; West, C. E.; Beguin, Yves ULg et al

in Journal of Nutritional Biochemistry (2000), 11(4), 223-30

Vitamin A deficiency produces anemia and altered iron status. In this study with rats we tested two hypotheses regarding vitamin A deficiency: (1) that it impairs erythropoiesis, leading to an increased ... [more ▼]

Vitamin A deficiency produces anemia and altered iron status. In this study with rats we tested two hypotheses regarding vitamin A deficiency: (1) that it impairs erythropoiesis, leading to an increased red cell turnover, and (2) that it inhibits the glycosylation of transferrin. Erythropoietic activity was assessed indirectly by determining the myeloid:erythroid ratio in bone marrow smears, the number of erythroid colonies in the red pulp of spleen, the blood reticulocyte index, and zinc protoporphyrin and plasma transferrin receptor concentrations. Transferrin glycosylation was assessed by measuring the sialic acid content of transferrin. The effects of vitamin A deficiency were compared with those of iron deficiency. Iron deficiency produced anemia and low iron levels in organs. Vitamin A deficiency produced low levels of plasma and hepatic retinol, and it induced decreased plasma total iron-binding capacity and raised iron levels in tibia and spleen. Short- but not long-term iron deficiency reduced the number of erythroid colonies in spleen; vitamin A deficiency had no influence. Neither iron nor vitamin A deficiency influenced the myeloid:erythroid ratio in bone marrow smears and the blood reticulocyte production. Plasma transferrin receptor and erythrocyte zinc protoporphyrin concentrations were not affected by vitamin A deficiency but increased with iron deficiency. Vitamin A deficiency did not stimulate erythrocyte breakdown, as indicated by unaltered plasma lactate dehydrogenase activity and reduced plasma total bilirubin levels. Both vitamin A and iron deficiencies raised the proportion of multiple sialylated transferrins in plasma. Thus, we have not found evidence that vitamin A deficiency affects erythropoiesis and erythrocyte turnover. The iron accumulation in spleen and bone marrow may be related to reduced iron transport due to inhibition of transferrin synthesis rather than inhibition of transferrin sialylation. [less ▲]

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See detailIndicators to measure Civic Literacy
Baye, Ariane ULg; Mainguet, Christine

Scientific conference (2006, November 15)

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See detailL’indice paysager Caulerpa racemosa “I.Ca.r”
Cariou, Nicolas; Chery, Aurélia; Jousseaume, Matthieu et al

in Ifremer (Ed.) CARtographie des HAbitats Marins Benthiques : de l'Acquisition à la Restitution (2013, March 27)

Depuis 2002, l’algue invasive Caulerpa racemosa var. cylindracea a été signalée au niveau de la Corse. Elle apparaît pour la première fois, en 2008, au niveau de la baie de Calvi (Corse). Depuis cette ... [more ▼]

Depuis 2002, l’algue invasive Caulerpa racemosa var. cylindracea a été signalée au niveau de la Corse. Elle apparaît pour la première fois, en 2008, au niveau de la baie de Calvi (Corse). Depuis cette époque, le nombre et la surface des sites envahis augmentent. L'analyse fine de l'évolution spatio-temporelle de sa distribution dans la zone prospectée confirme que C. racemosa colonise d'abord les sites profonds. A partir des différents stades de colonisation, un indice paysager (Indice Caulerpa racemosa: "I.Ca.r") adapté à la plongée en scaphandre autonome a été élaboré. "I.Ca.r" qui tient compte de l'expérience du plongeur, du type de substrat et de la superficie colonisée est un code à 8 caractères. Il permet une comparaison spatiale de sites colonisés et également une analyse de l'évolution temporelle de la colonisation. Mis au point en Baie de Calvi, l'indice paysager "I.Ca.r" peut être appliqué sur la Corse et sur l'ensemble de La Méditerranée. La méthodologie simple, résumée sur une fiche pourrait être distribuée dans les clubs de plongée et les informations envoyées au réseau Caulerpe par exemple. [less ▲]

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See detailIndice plasmodique et parasitémie à Plasmodium falciparum: valeur diagnostique et pronostique au Congo.
Carme, B.; Hayette, Marie-Pierre ULg; Mbitsi, A. et al

in Annales de la Société Belge de Médecine Tropicale (1972) (1995), 75

Parasitological data of various malarial studies performed in the Congo where Plasmodium falciparum malaria is holoendemic in rural and suburban zones between 1988 and 1991, were analyzed with the ... [more ▼]

Parasitological data of various malarial studies performed in the Congo where Plasmodium falciparum malaria is holoendemic in rural and suburban zones between 1988 and 1991, were analyzed with the intention of establishing diagnosis and prognosis value of Plasmodium falciparum parasitaemia in areas with high perennial transmission. In such an area Congolese school children (6-10 years old) had 88% P. falciparum index, this is the same percentage as that for children hospitalized with a pernicious attack. However, the parasite load is distributed differently; parasitaemia is greater than 6,000 asexual form for P. falciparum (af/Pf/µl) in only 4,6% of cases in the former group, versus 67% in the second group. A threshold of 10,000 af/Pf/µl above which the Plasmodium infection triggers a febrile attack in semi-immune children, is confirmed in school children in a rural context where the factor of taking antimalarial drugs within the preceding days is negligible: three out of four children with levels above this threshold are febrile versus 4,1% (7 out of 170) with lower blood parasite levels. Some adults where also asymptomatic carriers but much less frequently and with lower mean parasitaemia levels. The parasite load mirrors the clinical severity although this concept can be misleading as an individual prognostic criterion and foor hospital studies carried out in areas where multiple drug administration before hospitalization is common. For the studies recently performed in Brazzaville, the 5% threshold of parasitized red cells, the WHO severity criterion was never reached in asymptomatic subject or in cases of simple attack; it was reached in one out of two cases of pernicious attack. [less ▲]

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See detailLes indices d'activité dans la maladie de Crohn
Belaiche, Jacques ULg; Louis, Edouard ULg; Delwaide, Jean ULg et al

in Revue Médicale de Liège (1991), 46(1), 11-5

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See detailIndices d'aptitude des procédés de production
Palm, Rodolphe ULg

in Notes de Statistique et d'Informatique (1999), (5), 26

This note describes the main process capability indices and presents some inferential porperties. A numerical example is analysed by Minitab and SAS softwares.

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See detailIndices d'atypisme en paleontologie humaine.
Albert, Adelin ULg; Leguebe, A

in Zeitschrift für Morphologie und Anthropologie (1989), 77(3), 273-86

For a normally distributed variable, the index of atypicality associated with a measurement of that variable is defined as the probability of finding a result closer to the mean of the reference ... [more ▼]

For a normally distributed variable, the index of atypicality associated with a measurement of that variable is defined as the probability of finding a result closer to the mean of the reference population than the one actually observed. The method extends straight forwardly to multivariate situations, thus providing a joint interpretation of multiple observations recorded on the same subject. In human palaeontology, atypicality indices allow to analyze and to compare the results obtained from variables closely associated with specific traits of the morphology. We briefly outline the principle of the method and give a computer program to carry out the calculations. Finally, we apply the use of univariate and multivariate atypicality indices to data recorded on 53 Upper Palaeolithic skulls. [less ▲]

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See detailLes indices de déformation plio-quaternaire de la bordure occidentale du bassin des Iullemenden dans la région de Niamey (Niger).
Vicat, Jean-Paul; Léger, Jean-Marc; AHMED, Y et al

in Revue de Géographie Alpine (1994), 5

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See detailIndices de densité pour les peuplements d'épicéas (Picea Abies Karst.) d'Ardenne
Rondeux, Jacques ULg

in Bulletin des Recherches Agronomiques de Gembloux (1978), 13(2), 177-182

L'expression de la densité des peuplements forestiers reste l'un des sujets les plus discutés en matière forestière qu'il s'agisse de la qualité des critères proposés ou de la signification même de cette ... [more ▼]

L'expression de la densité des peuplements forestiers reste l'un des sujets les plus discutés en matière forestière qu'il s'agisse de la qualité des critères proposés ou de la signification même de cette notion. L'objet du présent article est essentiellement de montrer que l'utilisation combinée de paramètres tels que le nombre de bois, la surface terrière, l'arbre de grosseur moyenne et l'âge est de loin préférable à l'utilisation individuelle du nombre de bois ou de la surface terrière, par exemple, tout au moins dans le cas de structures équiennes comparables à celles de l'épicéa dans les Ardennes belges. [less ▲]

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See detailIndices et courbes de fertilité pour les peuplements de douglas (Pseudotsuga menziesii (MIRB.) FRANCO) en Belgique
Thibaut, André; Rondeux, Jacques ULg; Claessens, Hugues ULg

Book published by Faculté universitaire des sciences agronomiques de Gembloux (1995)

Height growth, site index curves and equations for managed even-aged pure stands of douglas-fir under management in the Southern Belgium are presented. They were derived from 256 temporary sample plots ... [more ▼]

Height growth, site index curves and equations for managed even-aged pure stands of douglas-fir under management in the Southern Belgium are presented. They were derived from 256 temporary sample plots, 87 of which were remeasured to give top height periodic increments. The range age and site classes being not equally covered, a special attention was paid to the increments of the total height of dominant trees (1 tree / are of sample plot). A large number of equations were tested to determine which was best suited to express the relationship of age and top height. Regression was employed to fit 4 digitized freehand curves drawn on the average pattern of top heights and top height increments observed at various ages. The form of the JOHNSON-SCHUMACHER model used in this study is : Hdom = b0 exp [-b1/(A-b2)], where : Hdom = top height, A = age, b0, b1 et b2 = coefficients to be estimated by non-linear regression procedures, exp = "e", the base of Naperian logarithms. The coefficients were estimated for the 4 curves. Each of the resulted equations was solved for height at age 50, thereby asigning a site index value to each equation. Site index was introduced into the height-age equation as an independent variable by expressing the coefficients as function of site index itself. Three site index curves corresponding to 36,33 and 30 m attained at age 50 were then derived. The logical issue of this study is to develop a prediction equation based on ecological factors wich should be most correlated with site index. [less ▲]

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See detailIndices of oxidative stress in blood and pulmonary epithelium lining fluid in horses suffering from recurrent airway obstruction
Art, Tatiana ULg; Kirschvink, Nathalie; Smith, Nicola et al

in Equine Veterinary Journal (1999), 31(5), 397-401

To test the hypothesis that reactive oxygen species could be associated to the lower airway disorders occurring in horses suffering from recurrent airway obstruction (RAO), indices of oxidative stress ... [more ▼]

To test the hypothesis that reactive oxygen species could be associated to the lower airway disorders occurring in horses suffering from recurrent airway obstruction (RAO), indices of oxidative stress were studied in blood and pulmonary epithelium lining fluid in 5 RAO horses either in clinical remission or 24 h after the onset of a crisis of bronchospasm and in 5 healthy horses. Venous blood and bronchoalveolar lavage fluid (BALF) samples were collected and analysed for reduced glutathione (GSH), oxidised glutathione (GSSG), total glutathione (TGSH), glutathione redox ratio (GRR) in blood haemolysate and pulmonary epithelium lining fluid (PELF). The haemolysate concentrations of GSH, GSSG, TGSH and GRR were similar in the 3 groups. The PELF glutathione status was significantly different in the RAO horses in acute crisis compared to healthy horses, indicating the occurrence of an oxidative stress. When RAO horses were in crisis their GSH and TGSH remained unchanged but their GSSG and GRR were significantly increased compared to the remission. These results support the hypothesis that oxidative stress is associated with lower airway disorders occurring in horses suffering from RAO [less ▲]

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See detailIndices psychologiques et longévité
Mormont, Christian ULg; Mormont, I.; Von Frenckell, R.

in Acta Psychiatrica Belgica (1986), 86(2), 111-119

Studied psychological variables associated with longevity. Human subjects: 63 male French adults (54-65 yrs) (prisoners of war during World War II). All Ss completed a battery of psychological tests, and ... [more ▼]

Studied psychological variables associated with longevity. Human subjects: 63 male French adults (54-65 yrs) (prisoners of war during World War II). All Ss completed a battery of psychological tests, and psychological profiles of 16 Ss who died within 3 yrs of testing were compared to those of the surviving Ss. Tests used: The Wechsler Adult Intelligence Scale (WAIS) (1955), L. Bender's Visual Motor Gestalt Test, the Minnesota Multiphasic Personality Inventory (MMPI), R. Benton's Visual Memory Test, and the Cattell Anxiety Scale. [less ▲]

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See detailIndigenous cucurbits of Côte d'Ivoire : a review of their genetic resources
Zoro Bi, I.; Koffi, K. K.; Dje, Y. et al

in Science et Nature (2006), 3(1), 1-9

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See detailIndigenous Muscovy ducks in Congo-Brazzaville. 1. A survey of indigenous Muscovy duck management in households in Dolisie City
Banga-Mboko, H.; Maes, D.; Leroy, Pascal ULg

in Tropical Animal Health and Production (2007), 39(2), 115-122

A cross-sectional study by means of a questionnaire with open-ended questions and multiple-choice questions was used to collect data on the profile of duck keepers, husbandry practices, and performances ... [more ▼]

A cross-sectional study by means of a questionnaire with open-ended questions and multiple-choice questions was used to collect data on the profile of duck keepers, husbandry practices, and performances, opportunities and constraints of Muscovy duck breeding in households (n = 88) in Dolisie city (Congo-Brazzaville). The study confirmed the common observations on traditional poultry keeping such as scavenging during the day and housing overnight. The flock size (7.7 ± 3 ducks per unit) showed no specialization of husbandry (100% of surveyed flocks were kept for simultaneous production of ducklings, meat and eggs) and a high drake-to-duck ratio (1:3). The hatchability was close to 80.5% ± 13%, whereas the average number of eggs was 13.2 ± 5 per clutch. In addition, a high mortality (80%) was observed in ducklings, which was due to poor feeding, lack of veterinary care and housing conditions. Eggs and live ducks were sold by duck farmers in response to the family needs rather than market price. The three most important findings were as follows: (1) duck keepers were mainly men (80% versus 20% of women); (2) there was no evidence of taboo; and (3) the duck as an exotic bird was not proscribed by cultural beliefs, and therefore development of the Muscovy duck in Congo Brazzaville should be unhindered. [less ▲]

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