Démonstration pratique de l'existence de la nutation diurne par M. Niesten : rapport de F. Folie
in Bulletins de l'Académie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique (1887), 3e série, t. 13(4), 398-404
The author establishes a report on the Mr. Niesten’s thesis on the practical demonstration of the diurnal nutation existence.Detailed reference viewed: 7 (0 ULg)
Demonstrationof somatogenic receptors in bovine corpus luteum: conjectural effect of trophic hormone on follicular growth and development.
Beckers, Jean-François ; ; et al
Poster (1989, September 09)Detailed reference viewed: 17 (2 ULg)
Demontage verlorener Hoffnungen : Arthur Schnitzlers "Die Frau des Richters" oder die literarische Verdrängung eines Scheiterns
in Monatshefte (1997), 89Detailed reference viewed: 40 (2 ULg)
Demystifying ethnic/sex differences in kidney function: is the difference in (estimating) glomerular filtration rate or in serum creatinine concentration?
; ; DELANAYE, Pierre et al
in Clinica Chimica Acta (2012), 413(19-20), 1612-17
BACKGROUND: The recent evaluation of the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation for estimating the glomerular filtration rate (GFR) in multiple ethnicities has raised the ... [more ▼]
BACKGROUND: The recent evaluation of the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation for estimating the glomerular filtration rate (GFR) in multiple ethnicities has raised the question on how well this equation performs for African-American and Asian subjects. There is no doubt that serum creatinine (Scr) concentration differs between ethnicities and sexes. We show that creatinine-based equations for white populations may be inaccurate for estimating GFR in other ethnic/gender groups, especially in populations from Asia. METHODS: This study presents a mathematical analysis of the CKD-EPI-equation complemented with a literature review of median and reference values for IDMS-standardized Scr-concentrations for multiple ethnicities. RESULTS: The study shows that at equal eGFR-CKD-EPI-values, the ratio of Scr between females and males equals 0.79 and between other ethnicities/sexes and white males is constant too. From this information, it is possible to calculate mean Scr-values that correspond very well with literature values directly obtained from Scr-distributions in healthy white males and females and in black males, but the discrepancy is larger for other populations. CONCLUSIONS: Our results confirm the criticism that has been raised for using the CKD-EPI-equation for these ethnicities. An alternative eGFR-model is proposed based on a population-normalized Scr that needs further validation. [less ▲]Detailed reference viewed: 63 (0 ULg)
DenCity: Zero Energy Light Weight Construction Households for Urban Densification
Amer, Mohamed ; Attia, Shady
in Rencontres Universitaires de Génie Civil de l'AUGC (2016, May 25)
This paper is a part of an ongoing research in the field of sustainable urban densification through providing innovative solutions for zero energy light weight construction. The focus aim of this research ... [more ▼]
This paper is a part of an ongoing research in the field of sustainable urban densification through providing innovative solutions for zero energy light weight construction. The focus aim of this research is to identify the gaps in the construction solutions for roof stacking, to feed in the innovation pipeline of the European construction landscape in the coming years. This paper presents a comprehensive review of different case studies and efforts in the field of roof raising and its repetition potentials. Based on a structured review, 8 different cases from three different European countries were sorted, placing a variety of methods in comparison with each other. The main contribution of this review lies in the analyses of the existing information in this field and the classification of the different validated methods and approaches that has been used. Finally, despite the existing challenges, it was found that the concept of roof stacking can be widely spread and applied in different contexts. Future research is going to investigate possible solution and to formulate structured scientific approaches to widen its application. [less ▲]Detailed reference viewed: 45 (11 ULg)
DenCity: Zero Energy Lightweight Construction Households for Urban Densification
Amer, Mohamed ; Attia, Shady
Scientific conference (2016, April 27)
Belgium, like many European Countries, has a serious challenge in the housing sector. The Federal planning bureau estimates the increase of the population by one million inhabitants by 2030, which ... [more ▼]
Belgium, like many European Countries, has a serious challenge in the housing sector. The Federal planning bureau estimates the increase of the population by one million inhabitants by 2030, which represent 600,000 additional family requiring accesses to new housing facilities. There is a significant housing shortage for individual, single parent families, seniors and students. Population ageing (mainly due to increase life expectancy) combined with a constant grow rate of individuals living in collective households, leads to a substantial increase of demand of collective households. Furthermore, the stringent European performance environmental regulations for the building sector require that by 2020, all new construction are zero or nearly zero energy, (equivalent to 15 kWh/m2/year), with 60% efficient on-site coverage by renewable energy. The shortage of vacant land and the increasing energy performance requirements is pushing the idea of urban densification and zero energy construction households. [less ▲]Detailed reference viewed: 49 (30 ULg)
Dendrimer-like star block and amphiphilic copolymers by combination of ring opening and atom transfer radical polymerization
; ; et al
in Macromolecules (1998), 31(25), 8691-8705
A new type of macromolecular architecture, denoted as dendrimer-like star block copolymers, is reported. These block copolymers are described by a radial geometry where the different generations or layers ... [more ▼]
A new type of macromolecular architecture, denoted as dendrimer-like star block copolymers, is reported. These block copolymers are described by a radial geometry where the different generations or layers are comprised of high molecular weight polymer emanating from a central core. A hexahydroxyl functional core was used as an initiator for the “living” ring opening polymerization (ROP) of ε-caprolactone producing a hydroxyl terminated six arm star polymer with controlled molecular weight and narrow polydispersities (PD < 1.1). Capping these chain ends with dendrons containing activated bromide moieties produced “macro-initiators” for atom transfer radical polymerization (ATRP). Methyl methacrylate was polymerized from these “macro-initiators” in the presence of an organometallic promoter to produce the requisite dendrimer-like star polymers. High molecular weight was obtained with low polydispersities (<1.2). Alternatively, amphiphilic character could be introduced by designing the different layers or generations to be either hydrophobic or hydrophilic. For example, methyl methacrylate (MMA) with either hydroxyethyl methacrylate (HEMA) or methacrylate functional ethylene oxide macromonomers (EO) were polymerized from these “macro-initiators” to provide a hydrophilic outer layer. The use of macromolecular building blocks allows rapid attainment of high polymer in a limited number of steps with purification between transformation requiring only polymer precipitation. [less ▲]Detailed reference viewed: 83 (12 ULg)
Dendritic cell differentiation and immune tolerance to insulin-related peptides in Igf2-deficient mice
Hansenne, Isabelle ; ; Greimers, Roland et al
in Journal of Immunology (Baltimore, Md. : 1950) (2006), 176(8), 4651-4657
There is some evidence that insulin-like growth factor 2 (IGF-2) may intervene in the control of T cell differentiation. To further study the immunoregulatory function of this growth factor, we analyzed ... [more ▼]
There is some evidence that insulin-like growth factor 2 (IGF-2) may intervene in the control of T cell differentiation. To further study the immunoregulatory function of this growth factor, we analyzed the immune system of Igf2(-/-) mice. Phenotypically, some immunological parameters such as lymphoid organ morphology and cellularity were unaltered in Igf2(-/-) mice, but an increase of CD8(+) cells and a decrease of B220(+) cells were observed in spleen. In vitro, the development of bone marrow-derived dendritic cells was affected by the absence of Igf2 expression. After maturation, a higher percentage of immature dendritic cells was observed in Igf2(-/-) population, together with a secondary decrease in allogenic T cell proliferation. Activation of T cells was also affected by the lack of expression of this growth factor. The profile of B cell response in mutant mice immunized with IGF-2 evidenced a T-dependent profile of anti-IGF-2 Abs that was absent in Igf2(+/+) mice. The influence of IGF-2 upon tolerance to insulin was also assessed in this model, and this showed that IGF-2 also intervenes in tolerance to insulin. The presence of a T-dependent response in Igf2-deficient mice should allow cloning of specific "forbidden" T CD4(+) lymphocytes directed against IGF-2, as well as further investigation of their possible pathogenic properties against insulin family. [less ▲]Detailed reference viewed: 32 (5 ULg)
Dendritic cells genetically engineered to express IL-10 induce long-lasting antigen-specific tolerance in experimental asthma
; ; et al
Poster (2007)Detailed reference viewed: 13 (1 ULg)
Dendritic cells genetically engineered to express IL-10 induce long-lasting antigen-specific tolerance in experimental asthma.
; Desmet, Christophe ; et al
in Journal of Immunology (2008), 181(10), 7230-7242
Dendritic cells (DCs) are professional APCs that have a unique capacity to initiate primary immune responses, including tolerogenic responses. We have genetically engineered bone marrow-derived DCs to ... [more ▼]
Dendritic cells (DCs) are professional APCs that have a unique capacity to initiate primary immune responses, including tolerogenic responses. We have genetically engineered bone marrow-derived DCs to express the immunosuppressive cytokine IL-10 and tested the ability of these cells to control experimental asthma. A single intratracheal injection of OVA-pulsed IL-10-transduced DCs (OVA-IL-10-DCs) to naive mice before OVA sensitization and challenge prevented all of the cardinal features of airway allergy, namely, eosinophilic airway inflammation, airway hyperreactivity, and production of mucus, Ag-specific Igs, and IL-4. OVA-IL-10-DCs also reversed established experimental asthma and had long-lasting and Ag-specific effects. We furthermore showed, by using IL-10-deficient mice, that host IL-10 is required for mediating the immunomodulatory effects of OVA-IL-10-DCs and demonstrated a significant increase in the percentage of OVA-specific CD4(+)CD25(+)Foxp3(+)IL-10(+) regulatory T cells in the mediastinal lymph nodes of OVA-IL-10-DC-injected mice. Finally, adoptive transfer of CD4(+) mediastinal lymph node T cells from mice injected with OVA-IL-10-DCs protected OVA-sensitized recipients from airway eosinophilia upon OVA provocation. Our study describes a promising strategy to induce long-lasting Ag-specific tolerance in airway allergy. [less ▲]Detailed reference viewed: 73 (15 ULg)
Dendritic cells in Barrett's carcinogenesis: an inadequate environment for antitumor immunity?
Conference (2013)Detailed reference viewed: 25 (8 ULg)
Dendritic cells in Barrett's esophagus carcinogenesis: an inadequate microenvironment for antitumor immunity?
Somja, Joan ; Demoulin, Stéphanie ; RONCARATI, Patrick et al
in American Journal of Pathology (2013), 182Detailed reference viewed: 69 (20 ULg)
Dendritic cells induce the death of human papillomavirus-transformed keratinocytes
Hubert, Pascale ; Giannini, Sandra ; Vanderplasschen, Alain et al
in FASEB Journal (2001), 15(13), 2521-2523Detailed reference viewed: 36 (12 ULg)
Dendritic Cells: More Than Just Adaptive Immunity Inducers?
Jacobs, Nathalie ; Boniver, Jacques ; Hubert, Pascale et al
in Current Immunology Reviews (2007), 2
Dendritic cells (DC) are well known for their capacity to induce immune responses and there is also accumulating evidence of their ability to interact with various cell types of the innate system, such as ... [more ▼]
Dendritic cells (DC) are well known for their capacity to induce immune responses and there is also accumulating evidence of their ability to interact with various cell types of the innate system, such as NK, NKT or TCR gamma-delta cells. These interactions are bi-directional, mediated by soluble or cell surface molecules and have been mainly described in the context of immune responses to infectious agents and tumors. NK, NKT or TCR gamma-delta cells induce the maturation of DC, as shown by the increased expression of CD86, IL12 production and priming of T cell responses. On the other hand, mature DC have the ability to activate NK, NKT or TCR gamma-delta cells for sustained innate immune responses and activated NK cells may kill immature DC. In addition, DC and NK or TCR gamma-delta cells share similar functions such as cytotoxic and antitumor activity, interferon production and antigen presentation capacity. [less ▲]Detailed reference viewed: 41 (7 ULg)
Dendritic cells: potential actors in prion neuroinvasion.
; ; Defaweux, Valérie et al
Poster (2006, September)Detailed reference viewed: 13 (7 ULg)
Dendritic flux penetration in Pb films with a periodic array of antidots
; ; Silhanek, Alejandro et al
in Physical Review. B : Condensed Matter (2005), 71(10),
We explore the flux-jump regime in type-II Pb thin films with a periodic array of antidots by means of magneto-optical measurements. A direct visualization of the magnetic flux distribution allows us to ... [more ▼]
We explore the flux-jump regime in type-II Pb thin films with a periodic array of antidots by means of magneto-optical measurements. A direct visualization of the magnetic flux distribution allows us to identify a rich morphology of flux penetration patterns. We determine the phase boundary H-*(T) between dendritic penetration at low temperatures and a smooth flux invasion at high temperatures and fields. For the whole range of fields and temperatures studied, guided vortex motion along the principal axes of the square pinning array is clearly observed. In particular, the branching process of the dendrite expansion is fully governed by the underlying pinning topology. A comparative study between macroscopic techniques and direct local visualization sheds light onto the puzzling T- and H-independent magnetic response observed at low temperatures and fields. Finally, we find that the distribution of avalanche sizes at low temperatures can be described by a power law with exponent tau similar to 0.9(1). [less ▲]Detailed reference viewed: 12 (1 ULg)
The dendritic organization of the human spinal cord: the dorsal horn.
in Neuroscience (1982), 7(9), 2057-87
The human spinal cord was studied with the Golgi method from 26 weeks gestational age onto adult life. Impregnated neurons were analyzed morphometrically by an adaptation of Sholl's concentric circle ... [more ▼]
The human spinal cord was studied with the Golgi method from 26 weeks gestational age onto adult life. Impregnated neurons were analyzed morphometrically by an adaptation of Sholl's concentric circle method in order to specify dendritic geometry, ramification richness and branching pattern. Neurons were classified according to Rexed's laminar scheme, identified on adjacent Nisslstained sections. The following features were found to be characteristic of the dorsal horn laminae. Lamina I is formed of a uniform population of large, poorly ramified neurons. Their main dendritic domaine is disk-shaped in the tangential plane with a mean diameter of about 800 micrometers. Orthogonal, spiny dendrites penetrating into lamina II are numerous even in adult material. Four cell types, all lying in the sagittal plane, are found in lamina II. (1) "Islet cells' (about 30% of impregnated neurons) have a rostrocaudal, cylindrical dendritic domaine with a long axis of +/- 600 micrometers, a few scattered spines and a richly branched axonal network, confined to the dendritic territory. They are more numerous in the central part of lamina II. A few islet cells have two axons. (2) "Filamentous cells' (about 20%), so called because of their multiple filiform, spiny dendrites, are vertico-sagittally oriented. Their soma is located in inner or outer lamina II, their dendritic tree, trapezoid of about 280 micrometers in height, being dorsal or ventral. The axon emits some collaterals in the vicinity of the dendritic tree, then it penetrates into lamina I or Lissauer's tract. (3) "Curly cells' (about 10%) have a complex, twisted, spine-rich dendritic tree. The dendritic domaine can be schematized by a sagittal disk with a diameter of about 200 micrometers, the cell body being eccentric. Curly cells are mainly found in outer lamina II. Their axon penetrates into lamina I or Lissauer's tract. (4) "Stellate cells' (about 40%) are multipolar neurons preferentially found in inner lamina II. They have straight, spine-poor dendrites, which cover a large (longest diameter ca. 500 micrometers), elliptical territory extending into laminae I and III. Their axon gives longitudinal collaterals to lamina II before penetrating deeply into laminae III and IV. Lamina III contains a mixed population of "antenna-like neurons' with a vertical, cone-shaped dendritic domaine and "radiate cells' characterized by a small, spherical territory. All lamina IV neurons are medium or large sized "antenna-like neurons' whose dorsally oriented, cone-shaped dendritic domaine may have a height of 1000 micrometers. It can be concluded that the dorsal horn of the human spinal cord has several distinct dendroarchitectonic features, different from those reported in animals. The possible functional implication of some dendritic features is examined and a laminar dendroarchitectonic scheme of the human cord is proposed as a morphological tool for future neuroanatomical and neuropathological studies. [less ▲]Detailed reference viewed: 29 (0 ULg)