Browsing
     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
Full Text
See detailMid-infrared predictions of lactoferrin content in bovine milk
Soyeurt, Hélène ULg; Bastin, Catherine ULg; Colinet, Frédéric ULg et al

in Journal of Dairy Science (2011), 94(E-suppl.1), 714

Lactoferrin (LF) is a glycoprotein present in milk and active in the immune system of cows and humans. Therefore, an inexpensive and rapid analysis to quantify this protein is desirable. A previous study ... [more ▼]

Lactoferrin (LF) is a glycoprotein present in milk and active in the immune system of cows and humans. Therefore, an inexpensive and rapid analysis to quantify this protein is desirable. A previous study reported the potential to quantify LF from the mid-infrared (MIR) spectrometry from 69 milk samples. Through the European RobustMilk project (www.robustmilk.eu), 3,606 milk samples were collected in Belgium, Ireland, and Scotland from individual cows and analyzed using a MIR MilkoScanFT6000 spectrometer. Milk LF content was quantified using ELISA in duplicate. Average ELISA data with a CV lower than 5% were used. After the detection of spectral and ELISA outliers, the calibration set contained 2,499 samples. An equation to predict LF content from MIR was developed using partial least squared regression. A first derivative pre-treatment of spectra was used to correct the baseline drift. To improve the repeatability of the spectral data, a file which contained the spectra of samples analyzed on 5 spectrometers was used during the calibration. The lactoferrin mean was 159.28 mg/l of milk with a SD of 97.21 mg/l of milk. The calibration (C) coefficient of determination (R2) was equal to 0.73 with a standard error (SE) of calibration of 50.54 mg/l of milk. A cross-validation (CV) was used to assess the robustness of the equation. R2 CV was 0.72 with a SE-CV of 51.16 mg/l of milk. An external validation (V) was conducted on 150 milk samples collected in Belgium. The SE of prediction (SEP) was 59.17 mg/L of milk. The similarity between R2 C and R2CV as well as between SE-C and SE-CV and between SE-CV and SEP confirms the equations developed are robust. The correlation between predicted and measured LF values was 0.71. This lower value compared with the one obtained from the calibration set (0.85) could be explained by the low ELISA reproducibility (16.24% ± 25.51%). If the developed equation is used to clean the validation data set, a total of 16 samples can be deleted. The validation coefficient for these 134 samples increased to 0.82. From these results, the developed equation could be used for screening the dairy cow population for breeding purposes. [less ▲]

Detailed reference viewed: 73 (20 ULg)
Full Text
Peer Reviewed
See detailMid-Infrared Spectroscopy Coupled with Chemometrics: A Tool for the Analysis of Intact Food Systems and the Exploration of Their Molecular Structure-Quality Relationships - A Review
Karoui, Ramdhane; Downey, Gerard; Blecker, Christophe ULg

in Chemical Reviews (2010), 110(10), 6144-6168

Public interest in food quality and methods of production has increased significantly in recent decades, due in part to changes in eating habits, consumer behavior, and the increased industrialization and ... [more ▼]

Public interest in food quality and methods of production has increased significantly in recent decades, due in part to changes in eating habits, consumer behavior, and the increased industrialization and globalization of food supply chains.1 Demand for high levels of quality and safety in food production obviously requires high standards in quality assurance and process control; satisfying this demand in turn requires appropriate analytical tools for food analysis both during and after production. Desirable features of such tools include speed, ease-of-use, minimal or no sample preparation, and the avoidance of sample destruction. These features are characteristic of a range of spectroscopic methods including the mid-infrared (MIR). While it is true that near-infrared (NIR) spectroscopy has achieved greater uptake by the food industry,2 reported applications of MIR in this sector have increased over the past decade or more. Foods represent significant analytical challenges. They are highly complex, variable and can be found in a number of different physical states: these include solids, dilute solutions, emulsions, foams, highly visco-elastic forms, and glassy [less ▲]

Detailed reference viewed: 23 (1 ULg)
Full Text
Peer Reviewed
See detailMid-Miocene paleoproductivity in the Atlantic Ocean and implications for the global carbon cycle
Diester-Haass, Liselotte; Billups, Katharina; Groecke, Darren R et al

in Paleoceanography (2009), 24

A prominent, middle Miocene (17.5-13.5 Ma) carbon isotope excursion ubiquitously recorded in carbonate sediments has been attributed to enhanced marine productivity and sequestration of C-13 depleted ... [more ▼]

A prominent, middle Miocene (17.5-13.5 Ma) carbon isotope excursion ubiquitously recorded in carbonate sediments has been attributed to enhanced marine productivity and sequestration of C-13 depleted organic carbon in marine sediments or enhanced carbon burial in peat/lignite deposits on land. Here we test the hypothesis that the marine delta C-13 record reflects a change in productivity with proxy records from three Atlantic Ocean sites (Deep Sea Drilling Program Site 608 and Ocean Drilling Program Sites 925 and 1265). Our multiproxy approach is based on benthic foraminiferal accumulation rates, elemental ratios (Ba/Al and P/Al), the delta C-13 of bulk sedimentary organic matter, and dissolution indices. We compare these proxies to benthic foraminiferal delta C-13 values measured on the same samples. Our results indicate that marine paleoproductivity in the Atlantic Ocean is not related to the benthic foraminiferal delta C-13 excursion. A numerical box model confirms that marine productivity cannot account for the delta C-13 maximum. The model shows that sequestration of 1.5 x 10(18) mol C in the terrestrial realm over a period of 3 Ma leads to a 0.9 parts per thousand delta C-13 increase in the deep ocean, which is near the observed records. Therefore, an increase in continental organic carbon sequestration is the most plausible way to enrich the ocean's carbon pool with C-13, which is consistent with coeval lignite deposits worldwide. The delta C-13 values of bulk sedimentary organic matter parallel the delta C-13 of dissolved inorganic carbon as reflected by benthic foraminiferal delta C-13 values suggesting no significant change in atmospheric pCO(2) levels over the investigated period. [less ▲]

Detailed reference viewed: 26 (1 ULg)
See detailA mid-size city and IYA09: a case study
Nazé, Yaël ULg

Poster (2010)

Detailed reference viewed: 4 (0 ULg)
Full Text
Peer Reviewed
See detailMid-term economical consequences of roadside tree topping
Campanella, Bruno ULg; Toussaint, André ULg; Paul, Roger ULg

in Urban Forestry and Urban Greening (2009), 8

Detailed reference viewed: 38 (13 ULg)
Full Text
Peer Reviewed
See detailMid-term follow-up after multiple system organ failure following cardiac surgery in children.
Heying, R.; SEGHAYE, Marie-Christine ULg; Grabitz, R. G. et al

in Acta Paediatrica (1999), 88(11), 1238-43

Multiple system organ failure after cardiac surgery in children is a severe complication with unknown mid- and long-term sequelae. We therefore evaluated 11 children (aged 20-126 mo, median: 67 mo) having ... [more ▼]

Multiple system organ failure after cardiac surgery in children is a severe complication with unknown mid- and long-term sequelae. We therefore evaluated 11 children (aged 20-126 mo, median: 67 mo) having survived multiple system organ failure after cardiac operations for congenital cardiac defects in a cross-sectional follow-up study 12-76 mo (median: 32 mo) after surgery. Clinical and laboratory examinations included cardiac, pulmonary, renal, hepatic, neurological and psychological function tests. All patients had adequate cardiac function. Lung mechanics were abnormal in three children and glomerular renal function was abnormal in two patients. Slight elevation of gamma-glutamyl transpeptidase and coagulation factor deficiency was present in six and seven patients, respectively (five of whom had undergone the Fontan operation). Severe neurological sequelae such as diplegia (n = 1) and mental retardation (n = 1) were observed in two patients. In addition, five children presented delayed motor, graphomotor and/or speech development. Two children were found to have abnormal intelligence. We conclude that with the exception of neurological impairment, mid-term sequelae of multiple system organ failure after cardiac surgery in children are mild. However, longer follow-up using an appropriate control group is mandatory. [less ▲]

Detailed reference viewed: 14 (1 ULg)
Full Text
Peer Reviewed
See detailMid-term results of a bipolar radial head prosthesis: Radiographic evidence of loosening at the cement-bone interface
Popovic, Nebojsa; Georis, Pierre ULg; lemaire, Roger et al

in Journal of Bone & Joint Surgery. American Volume (2007), 89-A(11), 2469-2476

Detailed reference viewed: 14 (5 ULg)
Peer Reviewed
See detailMiddle and Upper Devonian Miospore Zonation of Eastern Europe.
Avkhimovitch, V.I.; Tchibrikova, E.V.; Obukhovskaya, T.G. et al

in Bull. Centres Rech. Explor.-Prod. Elf Aquitaine, (1993), 17

Detailed reference viewed: 3 (0 ULg)
See detailThe Middle and Upper Palaeolithic in Central Asia: new results from Kulbulak (Uzbekistan)
Flas, Damien ULg; Kolobova, K.; Krivoshapkin, A. et al

Conference (2012)

Detailed reference viewed: 13 (0 ULg)
Full Text
Peer Reviewed
See detailMiddle Devonian (Givetian) megaspores from Belgium (Ronquières) and Libya (A1-69 borehole)
De Ville de Goyet, F.; Breuer, P.; Gerrienne, Philippe ULg et al

in Carnets de Géologie = Notebooks on Geology (2007), CG2007(M01/02), 68-73

Preliminary results are presented on newly discovered megaspore assemblages recovered from Givetian localities at Ronquières, Belgium, and a borehole (A1-69) drilled in the Ghadames Basin, Libya, by SHELL ... [more ▼]

Preliminary results are presented on newly discovered megaspore assemblages recovered from Givetian localities at Ronquières, Belgium, and a borehole (A1-69) drilled in the Ghadames Basin, Libya, by SHELL in 1959. The miospore biostratigraphy of the Ronquières and of A1-69 borehole sections has been published (Ville de Goyet, 2005; Gerrienne et alii, 2004; Loboziak & Streel, 1989; Loboziak et alii, 1992; Streel et alii, 1990). [less ▲]

Detailed reference viewed: 72 (11 ULg)
See detailMiddle Devonian (Givetian) plant microfossils from Goé (Belgium).
Lele, K.M.; Streel, Maurice ULg

in Annales de la Société Géologique de Belgique (1969), 92(1), 89-121

Detailed reference viewed: 16 (1 ULg)
Full Text
Peer Reviewed
See detailA Middle Devonian Callixylon (Archaeopteridales) from Ronquières, Belgium
Cornet, Luc ULg; Gerrienne, Philippe ULg; Meyer-Berthaud, Brigitte et al

in Review of Palaeobotany and Palynology (2012), 183

Detailed reference viewed: 27 (16 ULg)
Full Text
Peer Reviewed
See detailThe Middle Devonian plant assemblage from Dechra Aït Abdallah (Central Morocco) revisited
Prestianni, Cyrille; Meyer-Berthaud, Brigitte; Blanchard, Romain et al

in Review of Palaeobotany and Palynology (2012), 179

Detailed reference viewed: 4 (0 ULg)
Peer Reviewed
See detailThe Middle Devonian plant Leclercqia (Lycopsida) in eastern Gondwana
Meyer-Berthaud, B.; Fairon-Demaret, Muriel ULg; Steemans, Philippe ULg et al

Conference (2002)

Detailed reference viewed: 7 (0 ULg)
Full Text
Peer Reviewed
See detailMiddle Devonian to Lower Carboniferous miospore stratigraphy in the Central Parnaiba Basin (Brazil)
Loboziak, S; Streel, Maurice ULg; Caputo, M.V. et al

in Annales de la Société Géologique de Belgique (1992), 115(1), 215-226

Detailed reference viewed: 9 (1 ULg)
Peer Reviewed
See detailMiddle Devonian to Lower Carboniferous Miospores from selected boreholes in Amazonas and Parnaiba basins (Brazil): additional data, synthesis, and correlation.
Loboziak, S; Streel, Maurice ULg; Caputo, MV et al

in Documents du laboratoire de Géologie de Lyon (1993), 125

Detailed reference viewed: 28 (2 ULg)
Peer Reviewed
See detailMiddle energy PIXE preliminary experiments
Dupuis, Thomas ULg; Mathis, François ULg; Marchal, André ULg et al

Conference (2008)

Detailed reference viewed: 11 (3 ULg)