Is the Hagberg Falling Number always linked to the a - amylase activity of wheat ?
; ; et al
Scientific conference (2002, September 25)Detailed reference viewed: 28 (1 ULg)
Is the KIID sufficient to associate portfolios to investor profiles?
in Bankers, Markets, Investors (2012), (118), 14-22
With the Key Investor Information Document (KID), the new UCITS IV framework brings a useful standardized and simplified scheme to explain the risk of mutual funds to non-professional investors. The ... [more ▼]
With the Key Investor Information Document (KID), the new UCITS IV framework brings a useful standardized and simplified scheme to explain the risk of mutual funds to non-professional investors. The Synthetic Risk and Reward Indicator (SRRI) methodology defines how to assess a volatility equivalent for each type of funds, and recognizes the specificities of various types of investment vehicles in the process. The SRRI rests upon two key principles: (i) risk-volatility mapping: the level of risk can be adequately translated by the volatility of returns; and (ii) reward to volatility: there must be a positive connection between the level of risk borne by the individual investor and the associated reward in terms of returns. We show that the SRRI methodology does not guarantee that these two principles are respected in practice. By forcing any type of risk to be translated into a volatility estimate, the approach overlooks investor’s heterogeneity in the definition of risk. The SRRI synthetic approach is powerless to adequately reflect the trade-off between normal and extreme risks the way it is perceived by individual investors. It also ignores that fund returns are not necessarily only related to volatility. We show that the KID does not replace a proper investment profiling system. The analysis of investor profiles is a necessary complement to the KID in order to provide adequate advice to investors. We provide an approach, based on the linear-exponential utility function, that enables the financial advisor to address the heterogeneity of investors when defining the risk of an investment portfolio. [less ▲]Detailed reference viewed: 172 (26 ULg)
Is the Mehler reaction the main photoprotective mechanism occurring in Symbiodinium in hospite?
Roberty, Stéphane ; ; et al
Poster (2015, August)
The ecological success of reef-building corals throughout tropical oligotrophic waters relies on the symbiosis between cnidarians and photosynthetic dinoflagellates of the genus Symbiodinium. This ... [more ▼]
The ecological success of reef-building corals throughout tropical oligotrophic waters relies on the symbiosis between cnidarians and photosynthetic dinoflagellates of the genus Symbiodinium. This association allows the transfer of highly energetic compounds and an efficient recycling of growth-limiting nutrients. In the natural environment the holobiont have to cope with significant daily variations in light intensities that sometimes exceed Symbiodinium photosynthetic capacity. Fortunately, these organisms possess regulatory features that help to ensure that high light intensities can be endured without the accumulation of photodamage. Among them, it has been found recently that photoreduction of oxygen downstream PSI by the so-called Mehler reaction was the main alternative electron sink at the onset and steady state of photosynthesis in different cultured strains of Symbiodinium. In this study, we investigated the occurrence and the relative amplitude of this photoprotective mechanism in Symbiodinium cells living within the tropical coral Stylophora pistillata and the sea anemone Anemonia viridis. To this end, joint measurements of oxygen evolution, PSI and PSII activities were conducted. The impacts of CO2 limitation and CO2 fixation on the photoreduction of oxygen by PSI was also studied by using several inhibitors targeting the carbon concentrating mechanism and the Calvin-Benson-Bassham cycle. Conversely to cultured cells, these measurements revealed that the Symbiodinium located in S. pistillata, under control conditions, rely on other photoprotective mechanisms than the Mehler reaction to prevent over-excitation of the photosynthetic apparatus. However, we observed an increased O2 uptake capacity during photosynthesis when the efficiency of the carbon fixation was reduced in S. pistillata. [less ▲]Detailed reference viewed: 32 (5 ULg)
Is the multicolored Asian ladybeetle, Harmonia axyridis, the most abundant natural enemy to aphids in agroecosystems?
Vandereycken, Axel ; Durieux, Delphine ; Joie, Emilie et al
in Journal of Insect Science [=JIS] (2013), 13(158), 1-14
The multicolored Asian ladybeetle, Harmonia axyridis Pallas (Coleoptera: Coccinellidae), was introduced into Western Europe in the late 1990s. Since the late 2000s, this species has been commonly ... [more ▼]
The multicolored Asian ladybeetle, Harmonia axyridis Pallas (Coleoptera: Coccinellidae), was introduced into Western Europe in the late 1990s. Since the late 2000s, this species has been commonly considered one of the most abundant aphid predators in most Western European coun- tries. In spite of the large amount of research on H. axyridis, information concerning its relative abundance in agroecosystems is lacking. This study aims to evaluate the abundance of H. axyridis within the aphidophage community in four crops situated in southern Belgium: wheat, Triticum aestivum L. (Poales: Poaceae), corn, Zea mays, potato, Solanum tuberosum (Solanales: Solanaceae), and broad bean Vicia faba (Fabales: Fabaceae). In order to assess the species diver- sity, the collected data were analyzed by considering (1) the species richness and (2) the evenness according to the Shannon diversity index. Eleven aphidophages were observed in every invento- ried agroecosystem, including five abundant species: three coccinellids, the seven-spotted ladybug, Coccinella septempunctata L. (Coleoptera: Coccinellidae), the 14-spotted Ladybird, Propylea quatuordecimpunctata, and H. axyridis; one hoverfly, the marmalade hoverfly, Episyr- phus balteatus De Geer (Diptera: Syrphidae); and one lacewing, the common green lacewing, Chrysoperla carnea Stephens sensu lato (= s.l.) (Neuroptera: Chrysopidae). Harmonia axyridis has been observed to thrive, breed, and reproduce on the four studied crops. Harmonia axyridis is the most abundant predator of aphids in corn followed by C. septempunctata, which is the main aphid predator observed in the three other inventoried crops. In wheat and potato fields, H. axyridis occurs in low numbers compared to other aphidophage. These observations suggest that H. axyridis could be considered an invasive species of agrosystems, and that potato and wheat may intermittently act as refuges for other aphidophages vulnerable to intraguild predation by this invader. Harmonia axyridis is not the most abundant aphid predator in the main Belgian crops. [less ▲]Detailed reference viewed: 43 (12 ULg)
Is the natural shape of ions in the gas phase spherical ? The allegory of the cave (Plato) applied in mass spectrometry
Far, Johann ; Haler, Jean ; Kune, Christopher et al
Conference (2015, May 13)
The transfer of ions from solution to gas phase is a critical step to produce « native species ». Coming from a highly solvating medium, ionic species will tend to find new equilibrium conformations in ... [more ▼]
The transfer of ions from solution to gas phase is a critical step to produce « native species ». Coming from a highly solvating medium, ionic species will tend to find new equilibrium conformations in the gas phase. The pathway to reach the thermodynamically stable conformation(s) involves crossing potential barriers according to the type of interactions involved. When these barriers are too high compared to the internal energy of the ions, it may result in a “partial memory” (as structural preservation) of the conformation in solution. In order to evaluate the effect of the solvent evaporation and of the various collision processes encountered by the ions in the mass spectrometer we based our strategy on the determination of deviations from a spherical shape, supposed to be the natural state of ions in the gas phase. [less ▲]Detailed reference viewed: 47 (19 ULg)
Is the neutrophil a worthy target in severe asthma and chronic obstructive pulmonary disease?
Louis, Renaud ;
in Clinical & Experimental Allergy : Journal of the British Society for Allergy & Clinical Immunology (2006), 36(5), 563-567Detailed reference viewed: 6 (1 ULg)
Is the Nociception Coma Scale-Revised a Useful Clinical Tool for Managing Pain in Patients with Disorders of Consciousness?
Chatelle, Camille ; ; et al
in The Clinical journal of pain (2015)
OBJECTIVES: Our objective was to assess the clinical interest of the Nociception Coma Scale Revised (NCS-R) in pain management of patients with disorders of consciousness. METHODS: Thirty-nine patients ... [more ▼]
OBJECTIVES: Our objective was to assess the clinical interest of the Nociception Coma Scale Revised (NCS-R) in pain management of patients with disorders of consciousness. METHODS: Thirty-nine patients with potential painful conditions (e.g., due to fractures, decubitus ulcers or spasticity) were assessed during nursing cares before and after the administration of an analgesic treatment tailored to each patient's clinical status. In addition to the NCS-R, the Glasgow Coma Scale (GCS) was used before and during treatment in order to observe fluctuations in consciousness. Twenty-three of them had no analgesic treatment prior to the assessment whereas the analgesic treatment has been adapted in the other 16 patients. We performed non-parametric Wilcoxon tests to investigate the difference in the NCS-R and GCS total scores but also in the NCS-R subscores before versus during treatment. The effect of the level of consciousness and the etiology were assessed using a U Mann Whitney. RESULTS: NCS-R total scores were statistically lower during treatment when compared to the scores obtained before treatment. We also found that the motor, verbal and facial expression subscores were lower during treatment than before treatment. On the other hand, we found no difference between the GCS total scores obtained before versus during treatment. DISCUSSION: Our results suggest that the NCS-R is an interesting clinical tool for pain management. Besides, this tool seems useful when a balance is needed between reduced pain and preserved level of consciousness in patients with disorders of consciousness. [less ▲]Detailed reference viewed: 8 (2 ULg)
Is the noxious Ambrosia artemisiifolia L. going to invade Belgium?
Ortmans, William ; ; Mahy, Grégory et al
Poster (2014, February 07)
Ambrosia artemisiifolia L. is an invasive species from North America, causing a health crisis in Europe due to its highly allergenic pollen. In France, there is a zone where the A. artemisiifolia ... [more ▼]
Ambrosia artemisiifolia L. is an invasive species from North America, causing a health crisis in Europe due to its highly allergenic pollen. In France, there is a zone where the A. artemisiifolia populations are naturalized and invasive. Outside this area, populations are more rare and do not seem to expand. We tested if the performances of A. artemisiifolia are varying with competition level, and among geographical zones. The results show that populations from Belgium and Netherlands are not less efficient than invasive populations for the measured traits. [less ▲]Detailed reference viewed: 79 (17 ULg)
Is the O2(a1Δg) Venus nightglow emission controlled by solar activity ?
Soret, Lauriane ; Gérard, Jean-Claude
in Icarus (2015), 262
Several past studies showed that the O2(a1Δg) Venus nightglow emission at 1.27 μm is highly variable on a timescale of hours. We examine whether the intensity of this emission shows a more global trend ... [more ▼]
Several past studies showed that the O2(a1Δg) Venus nightglow emission at 1.27 μm is highly variable on a timescale of hours. We examine whether the intensity of this emission shows a more global trend linked to solar activity. [less ▲]Detailed reference viewed: 17 (5 ULg)
Is the PASAT enough to detect working memory problems in MS patients? A comparison with another working memory test
DELRUE, Gaël ; ; et al
We show that the PASAT is not the best test to evaluate working memory in mulitple sclerosis patients.Detailed reference viewed: 10 (0 ULg)
IS THE PRESENCE OF MESOTROPHIC PLANT-COMMUNITIES IN THE PEAT-BOGS OF HAUTES-FAGNES (BELGIUM) CONNECTED WITH TONALITE INTRUSIONS IN THE REVINIAN LAYERS
Hambuckers, Alain ; Schumacker, René ; Remacle, Jean et al
in Belgian Journal of Botany (1995), 128(1), 48-56
Within the Hautes-Fagnes Nature Reserve (Belgium) acidic and oligotrophic biotopes are developing on very acidified stony silt raised bogs. However, they are locally dominated by mesotrophic species ... [more ▼]
Within the Hautes-Fagnes Nature Reserve (Belgium) acidic and oligotrophic biotopes are developing on very acidified stony silt raised bogs. However, they are locally dominated by mesotrophic species. Based on the fact that there are several outcrops of tonalite in the region and particularly one in the Nature Reserve, a hypothesis to explain these singularities of the vegetation implies discontinuities of the bedrock provoked by intrusions of this magmatic rock in the Revinian layer covering the region. Seventeen plots containing Phragmites australis were examined and vegetation was described. Silt and soil water were sampled and analyzed for mineral contents in 15 sites. The differences of mineral composition between the P. australis plots and their surrounding environment confirmed the more mesotrophic characteristics of these plots (i.e. higher pH, higher Ca and Mg contents, lower Al content). However, the lower Zn, Pb and Fe contents would lead to reject the hypothesis of intrusions of tonalite since these elements are more abundant in the tonalite and its mineralization than in the Revinian rock. Nevertheless, the overall ecological conditions of the examined plots and the differences of plant species composition suggested that the observed chemical environment could be evoked for explaining the distribution of the mesotrophic species in the oligotrophic environment of the Nature Reserve. Consequently, an alternative hypothesis is proposed. [less ▲]Detailed reference viewed: 31 (5 ULg)
Is the seagrass Posidonia oceanica a reservoir of fecal indicator bacteria in the Mediterranean Sea
Polain, Stéphanie ; ; Lepoint, Gilles et al
Poster (2011, September)Detailed reference viewed: 30 (7 ULg)
Is the Sino-Nasal Outcome Test-22 a suitable evaluation for septorhinoplasty?
POIRRIER, Anne-Lise ; ; et al
in The Laryngoscope (2013), 123(1), 76-81
OBJECTIVES/HYPOTHESIS: It is becoming increasingly important for clinicians to demonstrate the impact of their interventions. The Sino-Nasal Outcome Test-22 (SNOT-22) questionnaire is a disease-specific ... [more ▼]
OBJECTIVES/HYPOTHESIS: It is becoming increasingly important for clinicians to demonstrate the impact of their interventions. The Sino-Nasal Outcome Test-22 (SNOT-22) questionnaire is a disease-specific questionnaire involving 22 symptoms combining rhinologic issues with general health issues. We evaluated the SNOT-22 score as a quality-of-life outcome measure in septorhinoplasty surgery. STUDY DESIGN: Outcome research. METHODS: We carried out a prospective case series in 76 patients undergoing septorhinoplasty. Their SNOT-22 scores were compared pre- and postoperatively. We also recorded individual symptom scores to study the impact of surgery. To check its reliability, the SNOT-22 score was correlated to patient-reported symptoms on a visual analogue scale. Patients were screened for comorbid conditions. Interactions with the surgical technique and/or with the initial sinonasal disease were sought. RESULTS: The SNOT-22 is a reliable and responsive outcome measure in septorhinoplasty surgery. Septorhinoplasty was especially effective at addressing nasal obstruction, discharge, olfaction, related sleep disturbance, and emotional symptoms such as embarrassment or frustration. Comparison to the visual analogue scale instrument confirmed the outcome measured by the SNOT-22. CONCLUSIONS: The SNOT-22 could be used in routine clinical practice to highlight the impact of nasal disease in each patient and to measure the outcome and the effectiveness of the surgical intervention. [less ▲]Detailed reference viewed: 30 (2 ULg)
Is the Sorensen test really a fatigue task for trunk extensor muscles?
Demoulin, Christophe ; ; GROSDENT, Stéphanie et al
in Abstract book of the 8th Interdisciplinary World Congress on Low Back and Pelvic Pain (2013, October)Detailed reference viewed: 32 (5 ULg)
Is the sword moss (Bryoxiphium) a preglacial Tertiary relict?
; ; et al
in Molecular Phylogenetics & Evolution (in press)Detailed reference viewed: 44 (0 ULg)
Is the Sørensen test valid to assess muscle fatigue of the trunk extensor muscles?
Demoulin, Christophe ; ; et al
in Journal of Back and Musculoskeletal Rehabilitation (2015), 00
BACKGROUND: Very few studies have quantified the degree of fatigue characterized by the decline in the maximal voluntary contraction (MVC) force of the trunk extensors induced by the widely used Sørensen ... [more ▼]
BACKGROUND: Very few studies have quantified the degree of fatigue characterized by the decline in the maximal voluntary contraction (MVC) force of the trunk extensors induced by the widely used Sørensen test. OBJECTIVE: Measure the degree of fatigue of the trunk extensor muscles induced by the Sørensen test. METHODS: Eighty young healthy subjects were randomly divided into a control group (CG) and an experimental group (EG), each including 50% of the two genders. The EG performed an isometric MVC of the trunk extensors (pre-fatigue test) followed by the Sørensen test, the latter being immediately followed by another MVC (post-fatigue test). The CG performed only the preand post-fatigue tests without any exertion in between. RESULTS: The comparison of the pre- and post-fatigue tests revealed a significant (P <0.05) decrease in MVC force normalized by body mass (−13%) in the EG, whereas a small increase occurred in the CG (+2.7%, P = 0.001). CONCLUSIONS: This study shows that the Sørensen test performed until failure in a young healthy population results in a reduced ability of the trunk extensor muscles to generate maximal force, and indicates that this test is valid for the assessment of fatigue in trunk extensor muscles. [less ▲]Detailed reference viewed: 48 (3 ULg)
Is the triggering of Kainama landslide (Kyrgyzstan, 2004) related to seismic shaking, groundwater flow or a combination of both ?
; Havenith, Hans-Balder
in Geophysical Research Abstracts (2007, April)Detailed reference viewed: 11 (0 ULg)
Is the western population of the European mink, (Mustela lutreola), a distinct Management Unit for conservation?
Michaux, Johan ; Libois, Roland ; et al
in Biological Conservation (2004), 115(3), 357-367
The European mink (Mustela lutreola) is one of the most threatened carnivores in Europe, with fragmented populations in Belarus. Russia and Romania, as well in south-western France and northern Spain ... [more ▼]
The European mink (Mustela lutreola) is one of the most threatened carnivores in Europe, with fragmented populations in Belarus. Russia and Romania, as well in south-western France and northern Spain. Many populations have become extinct recently, or are declining. We investigated mitochondrial DNA variation, using the complete D-loop region, and concentrating oil the west European population. The aim was two-fold: to use the genetic information to advise on the conservation of European mink, and to begin to understand their history through the Pleistocene. Captive breeding and re-introduction programmes are underway, so it is particularly vital to know whether the West European population should be treated separately. We find that European mink probably colonised from a single refugium after the last glaciation. West European populations may be fixed for a single haplotype. also suggesting a common origin. Despite this evidence for gene flow, following the precautionary principle we suggest that mink from the three geographically separate populations (Romania, Eastern and Western Europe) should be managed separately, for the moment. (C) 2003 Elsevier Ltd. All rights reserved. [less ▲]Detailed reference viewed: 70 (6 ULg)