References of "2012"
     in
Bookmark and Share    
Full Text
See detailA new HPLC method to quantify alliin, the major sulfur compound in garlic
DETHIER, Bérénice ULg; Laloux, Morgan ULg; Hanon, Emilien et al

Poster (2012, February 10)

Garlic is recognized for centuries for its health benefits, mostly linked to its sulfur- components. Among the products extracted from the cloves, alliin retained our attention. Alliin was synthesized ... [more ▼]

Garlic is recognized for centuries for its health benefits, mostly linked to its sulfur- components. Among the products extracted from the cloves, alliin retained our attention. Alliin was synthesized. This process leads to two stereoisomers. Their HPLC separation was the aim of this work. The method described in the literature (amino column, detection at 210 nm) showed a resolution of 1,1 between the isomers. A second method was developed: the stationary phase was porous graphitic carbon and a water-ACN gradient was used for the elution. It provided a resolution of 3,2, was shorter and underwent the validation process. The method leads to satisfying results. The separation is excellent, and the validation criteria are fulfilled. This may be valuable for future research on garlic. [less ▲]

Detailed reference viewed: 48 (9 ULg)
See detailDeux méthodes numériques pour la résolution de problèmes de diffraction multiple à haute fréquence
Antoine, X.; Boubendir, Y.; Geuzaine, Christophe ULg

Scientific conference (2012, February 10)

Detailed reference viewed: 15 (1 ULg)
Full Text
Peer Reviewed
See detailAnthropogenic effect on landscapes: spatial structure, ecological impact, entropy
Vranken, Isabelle ULg; Bogaert, Jan ULg; Visser, Marjolein

Poster (2012, February 10)

Structural and thermodynamic applications of entropy related to spatial heterogeneity under growing anthropogenic pressure have been examined. 16 zones from classified LANDSAT TM scenes presenting ... [more ▼]

Structural and thermodynamic applications of entropy related to spatial heterogeneity under growing anthropogenic pressure have been examined. 16 zones from classified LANDSAT TM scenes presenting different anthropogenic effect intensities have been used. Anthropogenic effects, compositional and configurational entropy have been measured. The scatter plot shows bell curves with maximal entropy at intermediate anthropogenic effects. Distinction of natural and anthropogenic classes shows opposed tendencies according to class and compositional/configurational type. These results have been interpreted as spatial transformation processes, energy production and release, and linked to the habitat heterogeneity and intermediate disturbance hypotheses. [less ▲]

Detailed reference viewed: 40 (4 ULg)
Full Text
See detailVariability among morning and evening milk compositions during the lactation
Arnould, Valérie ULg; Gengler, Nicolas ULg; Soyeurt, Hélène ULg

Poster (2012, February 10)

The main objective of this study was to analyze milking-to-milking variability of milk yield and milk composition (such as fat and protein percentages and somatic cell count). Additional objective was to ... [more ▼]

The main objective of this study was to analyze milking-to-milking variability of milk yield and milk composition (such as fat and protein percentages and somatic cell count). Additional objective was to extend this analyze to the milk fat composition. Milk samples (n=195.960) were collected from 29.636 cows in 491 Luxembourg farms and analyzed by MIR spectrometry. The milk contents of saturated, mono-, poly- and unsaturated fatty acids, and short, medium and long chain fatty acids were predicted from the recorded MIR spectral data. As expected, the milk composition and the milk fat composition, are affected by several factors as the milking period and the days in milk. In practice, using separately milk evening and milk morning could be interesting for cheese or butter production. [less ▲]

Detailed reference viewed: 71 (28 ULg)
Full Text
See detailSoil Respiration in forest Ecosystems: Combination of a multilayer Approach and an Isotopic Signal Analysis
Goffin, Stéphanie ULg; Longdoz, Bernard; Maier, Martin et al

in Communications in Agricultural and Applied Biological Sciences (2012, February 10)

Detailed reference viewed: 118 (6 ULg)
Full Text
See detailToward a single definition of periurban areas? A review of terms, definitions and characteristics relating to the "urban" terminology.
Andre, Marie ULg; Mahy, Grégory ULg; Lejeune, Philippe ULg et al

Poster (2012, February 10)

Remote sensing image interpretation and classification require a clear definition of what is considered as a rural, a periurban, a suburban or an urban area. Such a definition is also essential in order ... [more ▼]

Remote sensing image interpretation and classification require a clear definition of what is considered as a rural, a periurban, a suburban or an urban area. Such a definition is also essential in order to compare results of studies in periurban zones. Different terms, definitions and characteristics relating to these four concepts have been reviewed in the literature and compared according to different criteria like their type, citation frequency, strenghts and weaknesses, in the scope of a landscape evolution analysis. [less ▲]

Detailed reference viewed: 63 (14 ULg)
Full Text
See detailCarbon balance of a grazed grassland in Belgium
Jerome, Elisabeth ULg; Beckers, Yves ULg; Bodson, Bernard ULg et al

in Communications in Agricultural and Applied Biological Sciences (2012, February 10)

This work seeks to analyze the carbon balance of a managed permanent grassland grazed by the “Blanc Bleu Belge” breed of cattle. The study site is located at Dorinne. The experimental field was equipped ... [more ▼]

This work seeks to analyze the carbon balance of a managed permanent grassland grazed by the “Blanc Bleu Belge” breed of cattle. The study site is located at Dorinne. The experimental field was equipped with an eddy covariance system that measured CO2 fluxes and with a micrometeorological station. Carbon exported through mowing, imported through compost application or through complementary feeds for cattle was also measured. Carbon lost through CH4 emissions was finally estimated, allowing the establishment of a full C budget. In addition, the vegetation development was followed in order to estimate herbage production and dry matter intake by grazing animals. First year full carbon budget is presented and discussed, in relation with climate conditions and management practices. [less ▲]

Detailed reference viewed: 126 (19 ULg)
Full Text
See detailDéveloppement territorial et parcs d'activités économiques
Halleux, Jean-Marie ULg

Conference given outside the academic context (2012)

Detailed reference viewed: 40 (11 ULg)
Full Text
Peer Reviewed
See detailEstimation of genetic parameters for methane indicator traits based on milk fatty acids in dual purpose Belgian blue cattle
Kandel, Purna Bhadra ULg; Soyeurt, Hélène ULg; Gengler, Nicolas ULg

in Communications in Agricultural and Applied Biological Sciences (2012, February 10), 77(1), 21-25

The genetic parameters of CH4 indicators were estimated by single trait test-day models from 16,825 records collected on Walloon Dual Purpose Belgium Blue cows in their first 3 lactations. Fatty acid ... [more ▼]

The genetic parameters of CH4 indicators were estimated by single trait test-day models from 16,825 records collected on Walloon Dual Purpose Belgium Blue cows in their first 3 lactations. Fatty acid based CH4 indicators published in the literature were predicted from milk mid-infrared spectra using 597 calibration samples. For the indicator showing the highest link (R2 =0.88) with SF6 CH4 data, the average daily heritability was 0.21, 0.20 and 0.10 for each lactation, respectively. The sire genetic variability was on average 2.82 kg2 of CH4 per lactation. The genetic difference between the sires having cows eructing higher and lower CH4 was 10 kg of CH4 averaged per lactation. In conclusion, CH4 indicators can be predicted by MIR and the genetic variability of these traits seems to exist. [less ▲]

Detailed reference viewed: 159 (59 ULg)
Full Text
See detailEsthétique, affectivité et réflexivité. Essai sur la dimension interculturelle de l'anthropologie existentielle de Jean-Paul Sartre
Nke, Fridolin ULg

Doctoral thesis (2012)

Using existential anthropology in understanding contemporary history I try to reveal the value of the Sartrean model of intentional consciousness in understanding the human relationships and the political ... [more ▼]

Using existential anthropology in understanding contemporary history I try to reveal the value of the Sartrean model of intentional consciousness in understanding the human relationships and the political conflicts of our time. I examine the cultural aspects of Sartre’s thought. Sartre’s existential anthropology of the historical real-life refers to a complex philosophical method inspired by Husserl’s phenomenology, Freud’s psychoanalysis and Marx’s dialectic. It aims at understanding individual’s imaginary and behavior. Using that method, not only are we able to reveal the structure of people’s intentions in building and defending their personal and national interests, but also can we manifest the imaginary that constitute what Sartre designates by Dog’s mind, that meant criminal’s and racist’s beliefs. Sartre used his method in understanding writers as Baudelaire, Flaubert or Genet, who was also a criminal. Our intention is to apply psycho-analysis in understanding great figures of human history, such as Hitler, the “Dog” of our time, so that we shall be able to built harmless intercultural relationships. [less ▲]

Detailed reference viewed: 57 (7 ULg)
See detailBanana Streak Virus activation by tissue culture in natural interspecific banana hybrids
NINTIJE, Pierre

Poster (2012, February 10)

Banana and plantains are important in Burundi as a staple food crop and source of income for farmers. Nevertheless, their productions are threatened by pathogens among which viruses are especially harmful ... [more ▼]

Banana and plantains are important in Burundi as a staple food crop and source of income for farmers. Nevertheless, their productions are threatened by pathogens among which viruses are especially harmful. Elimination procedures of viruses are mainly performed by banana tissue culture techniques (TC) giving good sanitation results for most bananas’ viruses. However, Banana Streak Virus (BSV) a pararetrovirus is activated by TC for banana with the B genome. Therefore, there is a risk of encouraging the emergence of BSV in Burundi by the distribution of TC products to growers. In this work, we studied the activation of BSV by tissue culture in 5 banana cultivars collected in Burundi and micropropagated in vitro. The BSV activation was demonstrated in 4 cultivars using molecular tools. [less ▲]

Detailed reference viewed: 48 (1 ULg)
Full Text
See detailUsing fatty acid contents in milk to improve fertility of dairy cows?
Bastin, Catherine ULg; Berry, D.P.; Soyeurt, Hélène ULg et al

Poster (2012, February 10)

Improving dairy cow fertility by means of genetic selection has become increasingly important over the last years in order to overcome the declining cow fertility. This study investigated whether the ... [more ▼]

Improving dairy cow fertility by means of genetic selection has become increasingly important over the last years in order to overcome the declining cow fertility. This study investigated whether the fatty acids profile in milk could be used as an early predictor of genetic merit for fertility. Genetic covariances among 17 fatty acid contents in milk and the number of days from calving to conception were estimated from 29,792 first-parity Holstein cows. Results substantiated the unfavorable relationship among fertility and body fat mobilization in early lactation. Also, about 75% of the genetic variability of fertility was explained by the variability in milk fatty acids profile over the lactation indicating that these traits could be used to supplement genetic evaluations for fertility. [less ▲]

Detailed reference viewed: 40 (14 ULg)
Full Text
Peer Reviewed
See detailRhizobacterial volatile organic compounds modulate biomass production and root architecture in Arabidopsis thaliana (L.) Heynh.
Varin, Sébastien; Saunier de Cazenave-Mendaluk, Magdalena ULg; Ormeno-Lafuente, Elena et al

Poster (2012, February 10)

Detailed reference viewed: 16 (0 ULg)
See detailEndocrinologie et vieillissement
Beckers, Albert ULg

Scientific conference (2012, February 10)

Detailed reference viewed: 12 (1 ULg)
Full Text
See detailEvaluation of the genetic diversity of honey bees, Apis mellifera L. in the Walloon Region and selection of strains tolerant to the mite Varroa destructor Anderson and Trueman
Leclercq, Gil ULg; Nguyen, Bach Kim ULg; Gengler, Nicolas ULg et al

Poster (2012, February 10)

For more than a decade, high losses of honey bee colonies have been noticed in several countries, including Belgium. Currently often the mite Varroa destructor is considered a main threat for beekeeping ... [more ▼]

For more than a decade, high losses of honey bee colonies have been noticed in several countries, including Belgium. Currently often the mite Varroa destructor is considered a main threat for beekeeping. In view of the inefficiency of the current chemical treatments, one of the solutions is to select honey bees tolerant to this parasite using genomic selection. To reach this objective the genetic diversity of honey bees needs first to be studied using mainly ‘Single Nucleotide Polymorphisms’ (SNP). Records and samples will be collected all over the Walloon Region in order to create an informative phenotypic and genomic data base that will be used for ‘Genome Wide Association Studies’ (GWAS) to detect associations between SNPs and tolerance, and to select bees tolerant to Varroa destructor. [less ▲]

Detailed reference viewed: 231 (24 ULg)
Full Text
See detail50 Years of contrasted residue management in an agricultural crop: impacts on the soil carbon budget and on heterotrophic respiration.
Buysse, Pauline ULg; Roisin, Christian; Aubinet, Marc ULg

Poster (2012, February 10)

This study aims to estimate the carbon (C) loss by soil heterotrophic respiration (SHR) in three contrasted residue management treatments (Residue Export, Farm Yard Manure addition and Residue Restitution ... [more ▼]

This study aims to estimate the carbon (C) loss by soil heterotrophic respiration (SHR) in three contrasted residue management treatments (Residue Export, Farm Yard Manure addition and Residue Restitution after harvest) through the establishment of soil C budgets, and to compare these estimations with field SHR measurements. The soil C budgets were calculated in each case on the basis of total soil organic C content and C input data compiled since the beginning of the experiment in Belgium, 50 years ago. SHR fluxes were measured in 2010 and 2011 to compare them with the budget-based estimates and to assess SHR sensitivity to temperature. The comparison suggested that the treatment receiving the largest C input does not necessarily sequestrate the most C or produce the largest CO2 fluxes. [less ▲]

Detailed reference viewed: 34 (5 ULg)
Peer Reviewed
See detailHymenoptera community of pig carcasse in an urban biotope
Frederickx, Christine ULg; Dekeirsschieter, Jessica ULg; Verheggen, François ULg et al

Poster (2012, February 10)

Most reports published in the field of forensic entomology studies are focused on Diptera pattern colonization and are neglecting Hymenoptera succession. Hymenoptera are part of the entomofaunal ... [more ▼]

Most reports published in the field of forensic entomology studies are focused on Diptera pattern colonization and are neglecting Hymenoptera succession. Hymenoptera are part of the entomofaunal colonization of a dead body as parasitoids of fly pupae. However, one should consider Hymenoptera parasitoids in a forensic entomology context to evaluate the time of death. Blowflies parasitoids may indeed be of particular importance as their time of attack is often restricted to a small, well-defined window of developmental time of the insect host. Because these parasitoids also interfere with developmental times of colonizing Diptera, a better understanding of their ecology is needed. [less ▲]

Detailed reference viewed: 31 (3 ULg)
Full Text
See detailOptiMIR: new tools for a more sustainable dairy sector
Goubau, Amaury ULg

Poster (2012, February 10)

The OptiMIR project aims to improve the sustainability of the dairy sector by providing milk producers with new tools enabling them to manage the cow’s fertility, feeding, health, pollutants, and milk ... [more ▼]

The OptiMIR project aims to improve the sustainability of the dairy sector by providing milk producers with new tools enabling them to manage the cow’s fertility, feeding, health, pollutants, and milk quality. Data provided by milk recording organizations and recorded in different environments will be pooled and used to identify the links between animal status and milk composition changes. The entire MIR milk spectrum will be used as indicator of the cows’ status in order to 1) reduce production costs 2) give an access to high added value market and 3) reduce the environmental impact. OptiMIR is a 5 years project involving 5 research units, 11 milk recording organizations from Belgium, France, Germany, Ireland, Luxembourg, and United Kingdom. The project is co-financed by INTERREG IVB program. [less ▲]

Detailed reference viewed: 26 (4 ULg)
Full Text
See detailRelationships between methane emissions of dairy cattle and farm management.
Vanrobays, Marie-Laure ULg; Vanlierde, Amélie ULg; Kandel, Purna Bhadra ULg et al

Poster (2012, February 10)

Livestock is considered as an important contributor to global methane emissions, predominately due to methanogenesis from ruminants. Moreover, these emissions also represent major losses of energy for ... [more ▼]

Livestock is considered as an important contributor to global methane emissions, predominately due to methanogenesis from ruminants. Moreover, these emissions also represent major losses of energy for dairy cows and therefore are linked to production efficiency. The on-going development of predictive equations (e.g., from milk composition) would allow to relate methane emissions to farm management (e.g., nutrition, environment) on a large scale in the Walloon Region of Belgium. Finally, by acquiring improved knowledge of these relationships, contributions to mitigate methane emissions could be based on an improved management of dairy herds. [less ▲]

Detailed reference viewed: 73 (27 ULg)