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
Peer Reviewed
See detailINFLUENCE OF DRYING TEMPERATURE ON THE CORN WET-MILLING PROCESS: REVIEW
Malumba Kamba, Paul ULg; Janas, Sébastien; Sindic, Marianne ULg et al

in Filipovic, Lovro, A. (Ed.) Milling: Operations, Applications and Industrial Effects (2011)

In order to separate its major components, corn kernel is processed using the wet-milling process during which steeping, milling and starch/gluten separations appear to be the most important operations ... [more ▼]

In order to separate its major components, corn kernel is processed using the wet-milling process during which steeping, milling and starch/gluten separations appear to be the most important operations. To improve the efficiency of this process, corn wet-milling industry expended considerable resources focusing on improved process control, more efficient process equipment and on the development of hybrids that decrease the variability and reduce production costs. However, important variability is still observed according to the thermal history of grain after harvesting. The present article reviews up-to-date literature on the effect of drying conditions on the corn wet-milling performance and the physicochemical and functional properties of corn wet-milled fraction. Literature in this topic shows that high drying temperature combined with high initial moisture content of grain impact significantly the wet-milling performance and the quality of recovered materials. Further studies on the influence of drying process on the quality of starch, gluten, germ and fiber recovered during the wet-milling process are needed and would help to develop more accurate engineering and economic models for the corn wet milling process. [less ▲]

Detailed reference viewed: 36 (5 ULg)
Full Text
Peer Reviewed
See detailInfluence of drying temperature on the solubility, the purity of isolates and the electrophoretic patterns of corn proteins
Malumba Kamba, Paul ULg; Vanderghem, Caroline ULg; Deroanne, Claude ULg et al

in Food Chemistry (2008), 111(3), 564-572

A sequential extraction of proteins from whole corn kernels dried between 54 and 130 degrees C was performed in order to elucidate the effect of the drying temperature on the solubility, the purity and ... [more ▼]

A sequential extraction of proteins from whole corn kernels dried between 54 and 130 degrees C was performed in order to elucidate the effect of the drying temperature on the solubility, the purity and the electrophoretic patterns of the different classes of corn proteins. It was observed that albumin, globulin and zein solubilities dropped significantly when the drying temperature increased, while fractions solubilised as glutelin-G(2) and glutelin-G3 increased until 110 degrees C before dropping slightly at 130 degrees C. The analysis of the solubility of different protein groups indicated that mechanisms other than the creation of new disulfide bonds between proteins occurred during the high temperature drying of corn. Except for glutelin-G1 and zein isolates, which were highly pure, the purities of albumin, globulin, glutelin-G2 and glutelin-G3 isolates after dialysis were influenced by the drying temperature. Sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE) showed the disappearance of some water and salt-soluble poly-peptides at high drying temperatures. The electrophoretic patterns of zein and glutelin-G, were not significantly modified, although the solubility of zein was affected by the drying temperature. (c) 2008 Elsevier Ltd. All rights reserved. [less ▲]

Detailed reference viewed: 96 (18 ULg)
Full Text
Peer Reviewed
See detailInfluence of drying temperature on the wet-milling performance and the proteins solubility indexes of corn kernels
Malumba Kamba, Paul ULg; Janas, Sébastien ULg; Masimango, Thaddée et al

in Journal of Food Engineering (2009), 95

The effects of air drying temperature on the wet-milling performance and the proteins solubility indexes were investigated for corn kernels dried between 54°C and 130°C. It was observed that when the ... [more ▼]

The effects of air drying temperature on the wet-milling performance and the proteins solubility indexes were investigated for corn kernels dried between 54°C and 130°C. It was observed that when the drying temperature increases, the starch yield drops significantly. The gluten recovered increased abruptly for drying temperatures up to 80 C. The albumin, globulin and zein solubility indexes decreased continuously when corn drying temperatures increased. According to the temperatures used, the starch yield, the gluten recovered and the salt-soluble proteins solubility indexes were adjusted satisfactorily by using a two asymptotic logistic model. This model has the advantage of supplying information on the dynamic of the variation of described parameters. The solubility index of total salt-soluble proteins was shown to be a suitable indicator of the severity of the drying treatment in regard to the corn wet-milling performance. [less ▲]

Detailed reference viewed: 39 (5 ULg)
See detailInfluence of dung spreading on performance of lactating dairy cows
Dufrasne, Isabelle ULg; Gielen, Marc ULg; Limbourg, Pierre et al

in Proceedings of the 42nd Annual Meeting of E.A.A.P. (1991)

Detailed reference viewed: 2 (0 ULg)
Full Text
Peer Reviewed
See detailInfluence of electrical properties on the evaluation of the surface hydrophobicity of Bacillus subtilis
Ahimou, F.; Paquot, Michel ULg; Jacques, Philippe ULg et al

in Journal of Microbiological Methods (2001), 45(2), 119-126

The surface hydrophobicity of nine Bacillus subtilis strains in different states (spores, vegetative cells, and dead cells) was assessed by water contact angle measurements, hydrophobic interaction ... [more ▼]

The surface hydrophobicity of nine Bacillus subtilis strains in different states (spores, vegetative cells, and dead cells) was assessed by water contact angle measurements, hydrophobic interaction chromatography (HIC) and bacterial adhesion to hydrocarbon (BATH). Electrokinetic properties of B, subtilis strains were characterized by zeta potential measurements and found to differ appreciably according to the strain, Correlations between HIC data, BATH data and zeta potential showed that HIC and RATH are influenced by electrostatic interactions. Water contact angle measurements thus provide a better estimate of cell surface hydrophobicity. The water contact angle of B. subtilis varied according to the strain and the state, the spores tending to be more hydrophobic than vegetative cells. (C) 2001 Elsevier Science B.V. All rights reserved. [less ▲]

Detailed reference viewed: 20 (4 ULg)
Full Text
Peer Reviewed
See detailInfluence of Electrolytes and High Viscosity on Liquid-Liquid Separation
Anusarn, K; Chuttrakul, Pornprapa; Schmidt, P et al

in World Academy of Science, Engineering and Technology (2012), 6(72), 193-197

Full Text
Peer Reviewed
See detailInfluence of Electrolytes on Liquid-Liquid Extraction
Pfennig, Andreas ULg; Schwerin, Albrecht

in Industrial & Engineering Chemistry Research (1998), 37(8), 3180-3188

Detailed reference viewed: 4 (0 ULg)
See detailInfluence of electrolytes on liquid-liquid separation
Chuttrakul, P; Kopriwa, N; Ruckes, S et al

Conference (2011)

See detailInfluence of electrolytes on liquid-liquid separation
Blesinger, C; Effertz, M; Kopriwa, N et al

Conference (2011)

Full Text
Peer Reviewed
See detailInfluence of Electronic Excitation in the Charge Reversal of halogenated Cations.
Leyh, Bernard ULg; Wankenne, H.

in International Journal of Mass Spectrometry and Ion Processes (1991), 107

Charge reversal of high kinetic energy (8keV) cations during collisions with atomic target gases (G=Xe, Kr, Ne) has been studied for CCln+ (n=1 or 2) ions resulting from dissociative electroionization of ... [more ▼]

Charge reversal of high kinetic energy (8keV) cations during collisions with atomic target gases (G=Xe, Kr, Ne) has been studied for CCln+ (n=1 or 2) ions resulting from dissociative electroionization of CCl4. The influence of electronic excitation of the incident cation CCln+ and of the nature of the target gas G on the anion yield have been examined. In our experiments, the two-collision process CCln+->CCln+G+->(CCln-)+2G+ is predominant. By comparing the anion and cation yields as a function of the kinetic energy of the ionizing electrons, we found evidence, with some target gases, of the existence of long-lived excited states of CCl+ and CCl2+, which lead to an increase in the anion yield in comparison with charge reversal of the correponding ground state ions. For CCl+, we deduce an excitation energy of 4+/-1 eV with a lifetime longer than 6.2 µs. These results are compatible with the a3Pi long-lived state of CCl+ previously detected by optical spectroscopy and by charge-stripping experiments. Our experimental data on charge reversal and metastable dissociation of CCl2+ reveal the existence of a long-lived state (lifetime>8.2 µs) of CCl2+ lying at 4.3+/-1 eV above the ground state.Semi-empirical MNDO calculations show that the energy of the first quartet state, a4A2, is compatible with the observed excitation energy. The spin-orbit coupling-induced transition from the a4A2 state to the B2A2 state is suggested to play an important role in the metestable dissociation CCl2+*->(CCl+)+Cl. The origin of the increase in the anion yield when long-lived excited states of CCl+ and CCl2+ are charge-reversed is discussed. Step a is suggested to be responsible for this yield enhancement which is observed when an appropriate target gas makes this step quasi-resonant. [less ▲]

Detailed reference viewed: 22 (0 ULg)
Full Text
Peer Reviewed
See detailInfluence of emotion on memory for temporal information
D'Argembeau, Arnaud ULg; Van der Linden, Martial ULg

in Emotion (Washington, D.C.) (2005), 5(4), 503-507

Contextual information. such as color and spatial location, has been found to be better remembered for emotional than for neutral items. The current study examined whether the influence of emotion extends ... [more ▼]

Contextual information. such as color and spatial location, has been found to be better remembered for emotional than for neutral items. The current study examined whether the influence of emotion extends to memory for another fundamental feature of episodic memory: temporal information. Results from a list-discrimination paradigm showed that (a) item memory was enhanced for both negative and positive pictures compared with neutral ones and was better for negative than for positive pictures and (b) temporal information was better remembered for negative than for positive and neutral pictures, whereas positive and neutral pictures did not differ from each other. These findings are discussed in relation to the processes involved in memory for temporal information. [less ▲]

Detailed reference viewed: 112 (5 ULg)
Full Text
Peer Reviewed
See detailInfluence of emotional content of items on cryptomnesia
Beaufort, Aline ULg; Brédart, Serge ULg; Perfect, Timothy J. et al

Poster (2013, July)

Although the link between emotion and memory has been demonstrated for long, only one study has examined the impact of emotion on inadvertent plagiarism (cryptomnesia) up to now (Gingerich & Dodson, 2012 ... [more ▼]

Although the link between emotion and memory has been demonstrated for long, only one study has examined the impact of emotion on inadvertent plagiarism (cryptomnesia) up to now (Gingerich & Dodson, 2012). The Gingerich and Dodson‘s experiment examined the impact of mood on unintentional plagiarism. The present study examined the effect of emotional content of items on the occurrence of unintentional plagiarism using the Brown and Murphy paradigm (1989). In a first stage, same-sex dyads (96 participants, 48 men, mean age=21.5 years) were asked to generate alternately words corresponding to an emotional category. Three categories were proposed to our participants: positive, neutral and negative. Participants returned after a one week-delay and were instructed (1) to recall the items generated by themselves one week earlier (RO task), (2) to generate four new items for each category (GN task), and (3) to assign a confidence rating. In the RO task, almost 17% of responses were plagiarisms and the percentage almost reached 9% in the GN task. In the RO task, plagiarism was significantly higher for positive than neutral items. In addition, positive and negative items were better recalled than neutral one. These results demonstrate an impact of the emotional content on inadvertent plagiarism. [less ▲]

Detailed reference viewed: 58 (8 ULg)
Full Text
Peer Reviewed
See detailThe influence of emotional support during child birth : a clinical study
Cunha Lima da Motta, C.; Rinné, Caroline; Naziri, Despina ULg

in Journal of Prenatal and Perinatal Psychology and Health (2006), 20(4), 325-341

Detailed reference viewed: 68 (7 ULg)
Full Text
Peer Reviewed
See detailInfluence of Empirical Antibiotic (AB) Policy for Suspected Early-Onset Infection on the Bacterial Epidemiology in a Neonatal Unit
Egedy, Maude; Rousseaux, Dany; Maton, Pierre et al

in Mindcull.com/pediatric academic societies annual meeting (2003)

BACKGROUND: The worldwide epidemiology of causative bacteriae in early-onset infection has been remarkably stable along the last decades.Widespread use of broad-spectrum ABs for early-onset infection in ... [more ▼]

BACKGROUND: The worldwide epidemiology of causative bacteriae in early-onset infection has been remarkably stable along the last decades.Widespread use of broad-spectrum ABs for early-onset infection in neonates (N) can select multi-resistant bacteriae. OBJECTIVE: We postulated that switching from Ampicillin (A) to Penicillin G (PG) for suspected early-onset infection in our three levels neonatal units, wathever the gestational age, could modify the selective pressure among Enterobacteriacae (EB) and decrease emergence of resistant inducible bacteriae. DESIGN/METHODS: This is a prospective bacteriological survey of 22 months comparing three successive time-periods (P1,2,3) reflecting a progressive switching from Ampicillin-Amikacin (A-Ak) to Penicillin G-Amikacin (PG-Ak). It accounts for respectively A-Ak and PG-Ak (%) : P1 : (66 and 34); P2 : (48 and 52); P3 : (12 and 88). Systematic bacterial screening included blood culture and multiple swabs on admission. Multiple swabs and faeces culture were repeated once a week. Additional cultures were taken when clinically indicated. Antibiograms were done with the Viteck2 System (Biomerieux). Data were collected on the Bacteriological logicial Infopartner R (Nancy). RESULTS: Antenatal AB policy was not modified along the survey. We included 334, 340 and 306 N for P1, P2 and P3, respectively with the same proportion of very preterms. The neonatal morbidity was similar between the three Ps. In respect to the bacteriological screening, no major differences in the proportion of bacterial groups were observed. However, the proportion of inducible EB significantly decreased between the P1 and the P3 (39.7% vs 21.7%, p [less ▲]

Detailed reference viewed: 11 (2 ULg)
Peer Reviewed
See detailThe influence of encoding style on false memories
Dehon, Hedwige ULg; Laroi, Frank ULg; van der Linden, Martial

Poster (2009, September)

Detailed reference viewed: 16 (2 ULg)
Peer Reviewed
See detailThe influence of encoding style on false memories
Dehon, Hedwige ULg; Laroi, Frank ULg; Van der Linden, Martial

Poster (2009, June)

Detailed reference viewed: 10 (0 ULg)
Full Text
Peer Reviewed
See detailThe influence of encoding style on the production of false memories in the DRM paradigm: New insights on individual differences in false memory susceptibility?
Dehon, Hedwige ULg; Laroi, Frank ULg; Van der Linden, Martial ULg

in Personality & Individual Differences (2011), 50(5), 583-587

Recent research has shown that there are individual differences in how preexisting (internal) schemata (versus cues from the outside world) affect encoding processes, which can be reliably assessed with ... [more ▼]

Recent research has shown that there are individual differences in how preexisting (internal) schemata (versus cues from the outside world) affect encoding processes, which can be reliably assessed with the internal and external Encoding Style Questionnaire (ESQ, Lewicki, 2005). Since reliance on preexisting schemata at encoding has been found to increase the production of false memories in the DRM paradigm (Roediger & McDermott, 1995), while item-specific encoding has been shown to reduce it (see Gallo, 2006), it was examined whether individual differences in encoding style affects the production of such false memories. To this purpose, normal participants were asked to complete a French version of the ESQ questionnaire (Billieux et al., 2009) and were presented with a modified DRM procedure (Brédart, 2000) assessing false recall. The results showed a positive correlation between ESQ scores and false recall showing that internal encoders were more susceptible to false memories than external encoders. [less ▲]

Detailed reference viewed: 136 (7 ULg)
Full Text
Peer Reviewed
See detailInfluence of end group and molecular weight on polybutadiene fingerprint secondary ion mass spectra
Vanden Eynde, X.; Bertrand, P.; Dubois, Philippe ULg et al

in Macromolecules (1998), 31(19), 6409-6416

Polybutadiene samples of different molecular weight have been synthesized by anionic polymerization as initiated by sec-butyllithium with low polydispersity and a major content of 1,2-vinyl units. They ... [more ▼]

Polybutadiene samples of different molecular weight have been synthesized by anionic polymerization as initiated by sec-butyllithium with low polydispersity and a major content of 1,2-vinyl units. They have been analyzed by time-of-flight secondary ion mass spectrometry (ToF-SIMS) in order to investigate the sensitivity of this method toward the sec-butyl end group and toward the molecular weight. The SIMS spectra show the characteristic fragment of the end group, C4H9+ at m/z = 57, whose the peak intensity is strongly dependent on the polymer molecular weight, as is the case for almost all the fragment intensities. A model consistent with the peak intensity variations is used to give some new insights into the fragmentation mechanism at the end groups and within the main chain. Moreover, the analysis of the end group fragment allows Mn to be readily determined up to Mn = 4 × 104 from, for example, the Y(53)/Y(57) intensity ratio where Y(53) is the intensity of the deprotonated repeat unit ([M − H]+). Other Mn calibration methods have also been used and are discussed in terms of their accuracy and physical meaning. [less ▲]

Detailed reference viewed: 8 (1 ULg)
Peer Reviewed
See detailInfluence of environmental conditions on the interfacial organisation of fengycin, a bioactive lipopeptide produced by Bacillus subtilis
Eeman, Marc; Pegado, Luis; Dufrêne, Yves et al

Poster (2008)

Detailed reference viewed: 13 (0 ULg)