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 detailThe proto-ovule Runcaria heinzelinii Stockmans 1968 emend. Gerrienne et al., 2004 (mid-Givetian, Belgium): Concept and epitypification.
Gerrienne, Philippe ULg; Meyer-Berthaud, Brigitte

in Review of Palaeobotany and Palynology (2007), 145(3-4), 321-323

The proto-ovule Runcaria heinzelinii Stockmans 1968 has been re-described and interpraed as a precursor of seed plants; its generico-specifica diagnosis has been emended [Gerrienne, P., Meyer-Berthaud, B ... [more ▼]

The proto-ovule Runcaria heinzelinii Stockmans 1968 has been re-described and interpraed as a precursor of seed plants; its generico-specifica diagnosis has been emended [Gerrienne, P., Meyer-Berthaud, B., Fairon-Demaret, M., Streel, M., Steemans, P. 2004. Runcaria, a Middle Devonian seed plant precursor. Science 306, 856-858.]. Here we define the concept of "proto-ovule" and designate an epitype to support the uninformative and poorly preserved holotype [Stockmans, F., 1968. Vegetaux mesodevoniens recoltes aux confins du Massif du Brabant (Belgique). Inst. Roy. Sci. Nat. Belg. Mem. 159, 1-49., Plate VII: 8a]. (c) 2007 Elsevier B.V. All rights reserved. [less ▲]

Detailed reference viewed: 16 (2 ULg)
Full Text
Peer Reviewed
See detailProtochlorophyllide phototransformation in the bundle sheath cells of Zea mays
Dewez, D.; Franck, Fabrice ULg; Popovic, R. et al

in Journal of Photochemistry and Photobiology B : Biology (2004), 75(1-2), 73-80

The protochlorophyllide transformation process was investigated by using comparative analysis of 77 K fluorescence spectral changes occurring in isolated bundle sheath (BS) cells of etiolated Zea mays ... [more ▼]

The protochlorophyllide transformation process was investigated by using comparative analysis of 77 K fluorescence spectral changes occurring in isolated bundle sheath (BS) cells of etiolated Zea mays leaves after being exposed to a 200 ms saturating flash. Deconvolution analysis of the fluorescence spectra showed essential differences in the ratio of protochlorophyll(ides) and chlorophyll(ides) spectral forms indicating for BS cells to have a characteristic pathway of protochlorophyllide transformation. Bundle sheath cells showed a high ratio between non-photoactive protochlorophyll(ide)-F632 and photoactive protochlorophyllide-F655. In those cells, the 200 ins flash triggered a preferential formation of chlorophyll(ide)-F675 which remained stable in the dark for at least 90 min. Isolated BS cells showed an accumulation of chlorophyll(ide)-F675 resulting in the formation of inactive photosystem II. However for mesophyll cells of intact leaves, it was found to have a high ratio between photoactive and non-photoactive protochlorophyll(ide), showing the succession of chlorophyll(ide) forms usually known in C-3 plants. Protochlorophyllide phototransformation pathway in BS cells related to early stages of plastid differentiation triggered by light may indicate specific conditions for PSII assembly process leading to inactive PSII forms. (C) 2004 Elsevier B.V. All rights reserved. [less ▲]

Detailed reference viewed: 8 (1 ULg)
Full Text
Peer Reviewed
See detailProtochlorophyllide reduction: Mechanisms and evolution
Schoefs, B.; Franck, Fabrice ULg

in Photochemistry and Photobiology (2003), 78(6), 543-557

Protochlorophyllide (Pchlide) reductases are key enzymes in the process of chlorophyll biosynthesis. In this review, current knowledge on the molecular organization, substrate specificity and assembly of ... [more ▼]

Protochlorophyllide (Pchlide) reductases are key enzymes in the process of chlorophyll biosynthesis. In this review, current knowledge on the molecular organization, substrate specificity and assembly of the light-dependent reduced nicotinamide adenine dinucleotide phosphate:Pchlide oxidoreductases are discussed. Characteristics of light-independent enzymes are also described briefly, and the possible reasons for the selection of light-dependent enzymes during the course of evolution are discussed. [less ▲]

Detailed reference viewed: 7 (2 ULg)
Full Text
Peer Reviewed
See detailThe protochlorophyllide-chlorophillide cycle and photosynthesis
Dujardin, E.; Franck, Fabrice ULg; Gysembergh, Robert ULg et al

in Photobiochemistry and Photobiophysics (1986), 12

Detailed reference viewed: 16 (1 ULg)
Full Text
Peer Reviewed
See detailProtochlorophyllide-NADP(+) and protochlorophyllide-NADPH complexes and their regeneration after flash illumination in leaves and etioplast membranes of dark-grown wheat
Franck, Fabrice ULg; Bereza, B.; Boddi, B.

in Photosynthesis Research (1999), 59(1), 53-61

The fast (1 min) regeneration process of the photoactive Pchlide forms after a light flash was studied in etiolated wheat leaves, and this process was simulated in vitro by incubating etioplast inner ... [more ▼]

The fast (1 min) regeneration process of the photoactive Pchlide forms after a light flash was studied in etiolated wheat leaves, and this process was simulated in vitro by incubating etioplast inner membranes of wheat with excess NADPH or NADP(+). The 77 K fluorescence spectra were recorded after flash illumination, dark incubation and a subsequent flash illumination of the samples. A non-photoactive Pchlide form with an emission maximum at 650 nm was transiently detected in leaves during regeneration of a photoactive Pchlide form with an emission maximum at 654 nm. Gaussian deconvolution of fluorescence spectra of isolated membranes showed that this 650 nm form appeared in conditions of excess NADP(+), as suggested in previous studies. Additionally a Pchlide form emitting at 638.5 nm was detected in the same conditions. The analysis of the spectra of leaves at different times after a flash indicated that these two non-photoactive forms are involved as intermediates in the regeneration of photoactive Pchlide. This regeneration is in correlation with the production of the Chlide form emitting at 676 nm. The results demonstrate that, in vivo, part of the NADPH:protochlorophyllide oxidoreductase is reloading with nonphotoactive Pchlide on a fast time-scale and that the 676 nm Chlide form is the released product of the phototransformation in this process. [less ▲]

Detailed reference viewed: 7 (0 ULg)
Full Text
Peer Reviewed
See detailProtocol 3 : Belgian innovative projetcs to help community dwelling frail elderly
de Almeida Mello, J; Maggi, Patrick ULg; Van Durme, T et al

Poster (2012, March)

Detailed reference viewed: 24 (8 ULg)
Full Text
See detailProtocol ALERT : Congress European Emergency Number Association
Stipulante, Samuel ULg

Conference (2013, April 18)

Detailed reference viewed: 12 (2 ULg)
Full Text
Peer Reviewed
See detailA protocol for studying the kinetics of RNA within cultured cells: application to ribosomal RNA.
Thiry, Marc ULg; Lamaye, Françoise ULg; Thelen, Nicolas ULg et al

in Nature Protocols (2008), 3(12), 1997-2004

This protocol describes a nonisotopic method for high-resolution investigation of the kinetics of RNA within the cell. This involves the incorporation of bromouridine-5'-triphosphate into RNA of living ... [more ▼]

This protocol describes a nonisotopic method for high-resolution investigation of the kinetics of RNA within the cell. This involves the incorporation of bromouridine-5'-triphosphate into RNA of living cells by lipofection followed by immunocytological detection of BrRNAs. The use of the same antibody identified either with fluorescence or with gold particles revealed the three-dimensional organization of sites containing labeled RNAs or their precise localization by using confocal and ultrastructural microscopy, respectively. Comparison of three-dimensional reconstruction obtained from the series of optical sections and ultrathin sections was extremely fruitful to describe topological and spatial dynamics of RNAs from their synthesis site inside the nucleus to the cytoplasm. Combined with immunolocalization of proteins involved in different nuclear activities and with highly resolved three-dimensional visualizations of the labelings, this method should also provide a significant contribution to our understanding of the functional, volumic organization of the cell nucleus. The entire protocol can be completed in approximately 10 d. [less ▲]

Detailed reference viewed: 39 (8 ULg)
Full Text
See detailProtocole d'essai LC/MS - P001 - V01
Hubert, Cédric ULg; Ziemons, Eric ULg; Hubert, Philippe ULg

Report (2011)

Detailed reference viewed: 10 (1 ULg)
Full Text
See detailProtocole de Kyoto : aménagement du territoire, mobilité et urbanisme
Boniver, Véronique ULg; Daxhelet, Delphine; Klinkenberg, Anne-Catherine et al

Book published by Service Public de Wallonie (2005)

L'ouvrage analyse différentes mesures pour faciliter l'adhésion de la Région wallonne au Protocole de Kyoto. Trois types de mesures sont présentées en vue de réduire les émissions de gaz à effet de serre ... [more ▼]

L'ouvrage analyse différentes mesures pour faciliter l'adhésion de la Région wallonne au Protocole de Kyoto. Trois types de mesures sont présentées en vue de réduire les émissions de gaz à effet de serre : des mesures pour limiter la croissance de la mobilité en voiture; pour améliorer les performances énergétiques en matière d'urbanisme et pour limiter les effets de la modification des régimes hydriques. [less ▲]

Detailed reference viewed: 101 (10 ULg)
Full Text
Peer Reviewed
See detailProtocole de prise en charge neurochirurgicale des acouphènes invalidants : à propos de trois cas
Litré, Claude Fabien ULg; Giersky, F; Theret, E et al

in Neuro-Chirurgie (2010), 56(4), 303-8

Les acouphènes invalidants représentent 1 % de la population. Les différents traitements proposés jusqu’à présent ont des résultats très décevants. L’avènement de la stimulation corticale entrouvre un ... [more ▼]

Les acouphènes invalidants représentent 1 % de la population. Les différents traitements proposés jusqu’à présent ont des résultats très décevants. L’avènement de la stimulation corticale entrouvre un nouvel espoir thérapeutique pour ces patients. Nous rapportons ici notre expérience sur la prise en charge et le traitement chirurgical pour ces patients. [less ▲]

Detailed reference viewed: 14 (5 ULg)
Full Text
See detailProtocole de résistance à la fatigue adapté aux rotateurs internes et externes de l’épaule
Forthomme, Bénédicte ULg; Maquet, Didier ULg; Lehance, Cédric ULg et al

in Abstract book de la 6ème Journée Belge d'Isocinétisme (2008, March)

Detailed reference viewed: 178 (16 ULg)
Full Text
Peer Reviewed
See detailProtocole excentrique adapté au traitement des épicondylites chroniques
Croisier, Jean-Louis ULg; Forthomme, Bénédicte ULg; Crielaard, Jean-Michel ULg et al

in Annales de Réadaptation et de Médecine Physique (2004, October), 47(7), 502-503

Detailed reference viewed: 189 (6 ULg)
Full Text
Peer Reviewed
See detailProtocole GPG et succès de reproduction
Hanzen, Christian ULg; Boudry, B.; Bouchard, E.

in Point Vétérinaire (2003), 34(238, AUG-SEP), 50-54

In cows, an average success rate of 32% for artificial insemination is obtained using the ovulation synchronisation GPG protocol in cows. This percentage is similar to that obtained in the same conditions ... [more ▼]

In cows, an average success rate of 32% for artificial insemination is obtained using the ovulation synchronisation GPG protocol in cows. This percentage is similar to that obtained in the same conditions after insemination of observed heat (32.6%) and slightly better to that obtained after synchronisation of heat using one or two doses of PgF(2alpha) (26,9 and 28.8%). The protocol has a positive effect on fertility expressed as the percentage of gravid cows four months after calving. The protocol may cause early return to oestrus, either after the first injection of GnRH or after the PgF(2alpha) injection. In heifers, the protocol induces a shortening of the cycle, which suggests that further research is needed on the interval between injections. The protocol does not result in a higher percentage of multiple ovulation. Embryonic mortality is about 7%. [less ▲]

Detailed reference viewed: 328 (4 ULg)
See detailProtocole isocinétique excentrique appliqué aux épicondylites: résultats préliminaires
Croisier, Jean-Louis ULg; Forthomme, Bénédicte ULg; Foidart-Dessalle, Marguerite ULg et al

in Progrès en Médecine Physique et de Réadaptation (3ème série) (1999)

Detailed reference viewed: 33 (0 ULg)
Full Text
Peer Reviewed
See detailProtocoles cliniques pour la réparation de différentes restaurations définitives
BOLETTE, Amandine ULg; GUEDERS, Audrey ULg; GEERTS, Sabine ULg

in Actualités Dentaires de l'Université de Liège (2007), 38

Detailed reference viewed: 38 (8 ULg)
See detailProtocoles excentriques appliqués aux tendinites rotuliennes
Croisier, Jean-Louis ULg; Godon, Bernard ULg; Giordano, F. et al

in Actes de la 2e Journée Belge d'Isocinétisme (1999, March 20)

Detailed reference viewed: 35 (0 ULg)
Peer Reviewed
See detailProtocols for building an Organic Chemical Ontology
Colaux, Catherine ULg

Conference (2006, October)

Detailed reference viewed: 5 (0 ULg)
Full Text
Peer Reviewed
See detailProtocols for building an organic chemical ontology
Colaux, Catherine ULg; Krief, alain

in International Journal of Knowledge and Learning (2008), 4(2/3), 152-175

We will describe the different stages involved in the collaborative construction of an organic chemical ontology by chemists. We will disclose our experience, as chemists, in learning, how to build a ... [more ▼]

We will describe the different stages involved in the collaborative construction of an organic chemical ontology by chemists. We will disclose our experience, as chemists, in learning, how to build a collaborative ontology and how to use the ontology software from that of an artificial intelligence scientist. We will then disclose our work in developing the protocols to work within the community of chemists to build a collaborative ontology. Useful perceptions about the use of the ontology will also be discussed. [less ▲]

Detailed reference viewed: 27 (1 ULg)