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See detailZeros in Egyptian. Can nothing mean something?
Winand, Jean ULg

in Lingua Aegyptia [= LingAeg] (2009), 17

Detailed reference viewed: 134 (12 ULg)
See detailZeta Potential Measurements for Biotechnology Applications
Thonart, Philippe ULg; Paquot, Michel ULg

Book published by CRCRC Press- Boca Raton - (1987)

Detailed reference viewed: 9 (1 ULg)
See detailZeta potential of Yeast cells
Thonart, Philippe ULg; Custinne, M.; Paquot, Michel ULg

Poster (1981, April)

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See detailZeta Potential of Yeast Cells : Application in cell immobilization.
Thonart, Philippe ULg; Custinne, M.; Paquot, Michel ULg

in Enzyme & Microbial Technology (1982), 4

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See detailZeus Polieus à Athènes : les Bouphonies et au-delà.
Lebreton, Sylvain ULg

in Kernos : Revue Internationale et Pluridisciplinaire de Religion Grecque (2015), 28

The study of the evidence regarding the cult of Zeus Polieus in Athens, in the asty as well as in the demes (end of 6th c. – beginning of 3rd c. CE), allows us to emphasize three main dimensions of the ... [more ▼]

The study of the evidence regarding the cult of Zeus Polieus in Athens, in the asty as well as in the demes (end of 6th c. – beginning of 3rd c. CE), allows us to emphasize three main dimensions of the god. These are: his fundamental rooting on the Acropolis, the highness of his location – which explains his probable agricultural skills – and his political role. The Polieus' political capacity shall not be overestimated, though: in Athens, he is neither a tutelary god nor an active protector of the polis. He rather seems to guarantee the unity of the political community and, above all, the tutelary position of Athena (Polias). At least, this is what an aetiological tale for the Bouphonia, found in a gloss from Hesychios, seems to show. Indeed, this version of the myth differs noticeably from the more famous one from Pophyry's De Abstinentia. [less ▲]

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See detailZiel der Scham ist das Verschwinden
Pontzen, Alexandra ULg

in Literaturkritik.de (2004)

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See detailZiemniak w Belgii
Burny, Philippe ULg; Gazinski, Benon

in Rolnicze abc (1997), 6(83), 20

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See detailZigzag antiferromagnetic quantum ground state in monoclinic honeycomb lattice antimonates A3Ni2SbO6 (A=Li, Na)
Zvereva, E.A.; Stratan, M.I.; Ovchenkov, Y.A. et al

in Physical Review. B: Condensed Matter and Materials Physics (2015), 92

We present a comprehensive experimental and theoretical study of the electronic and magnetic properties of two quasi-two-dimensional (2D) honeycomb-lattice monoclinic compounds A3Ni2SbO6 (A=Li, Na ... [more ▼]

We present a comprehensive experimental and theoretical study of the electronic and magnetic properties of two quasi-two-dimensional (2D) honeycomb-lattice monoclinic compounds A3Ni2SbO6 (A=Li, Na). Magnetic susceptibility and specific heat data are consistent with the onset of antiferromagnetic (AFM) long range order at low temperatures with Néel temperatures ~ 14 and 16 K for Li3Ni2SbO6 and Na3Ni2SbO6, respectively. The effective magnetic moments of 4.3 Bohr magnetons/f.u. (Li3Ni2SbO6) and 4.4 Bohr magnetons/f.u. (Na3Ni2SbO6) indicate that Ni2+ is in a high-spin configuration (S=1). The temperature dependence of the inverse magnetic susceptibility follows the Curie-Weiss law in the high-temperature region and shows positive values of the Weiss temperature ~ 8 K (Li3Ni2SbO6) and ~12 K (Na3Ni2SbO6) pointing to the presence of non-negligible ferromagnetic interactions, although the system orders AFM at low temperatures. In addition, the magnetization curves reveal a field-induced (spin-flop type) transition below TN that can be related to the magnetocrystalline anisotropy in these systems. These observations are in agreement with density functional theory calculations, which show that both antiferromagnetic and ferromagnetic intralayer spin exchange couplings between Ni2+ ions are present in the honeycomb planes supporting a zigzag antiferromagnetic ground state. Based on our experimental measurements and theoretical calculations we propose magnetic phase diagrams for the two compounds. [less ▲]

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See detail«Gli zii di Sicilia» come misura del ritorno.
Curreri, Luciano ULg

Conference given outside the academic context (2015)

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See detailDie Zikadenmetapher in Ingeborg Bachmanns Die Zikaden: Lebensflucht und Lebensmut
Vanhaegendoren, Koen ULg

in Seminar : a Journal of Germanic Studies (2006), 42(2), 135-154

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See detailZilberberg – Hjelmslev : aller – retour
Badir, Sémir ULg

in Badir, Sémir; Ablali, Driss (Eds.) Analytiques du sensible. Pour Claude Zilberberg (2009)

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See detailZinc and Iron interplay in Arabidopsis relatives
Hanikenne, Marc ULg

Conference (2016, May 24)

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See detailZinc and Iron interplay in Arabidopsis relatives
Hanikenne, Marc ULg

Scientific conference (2016, March 25)

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See detailZinc Beta-lactamase superfamily
Bebrone, Carine ULg

in Kretsinger, Robert; Uversky, Vladimir; Permyakov, Eugene (Eds.) Encyclopedia of Metalloproteins (2013)

The metallo-beta-lactamase superfamily was first defined in 1997 on the basis of a sequence alignment. The members of this superfamily are characterized by the presence of a common alpha-beta-beta-alpha ... [more ▼]

The metallo-beta-lactamase superfamily was first defined in 1997 on the basis of a sequence alignment. The members of this superfamily are characterized by the presence of a common alpha-beta-beta-alpha fold and share five conserved motifs: Asp84, His116-Xaa-His118-Xaa-Asp120-His121, His196, Asp221 and His263, which are (with the exception of Asp84) involved in the binding of two metal ions. This superfamily contains now more than 23,900 members divided into 17 biological groups. Besides metallo-beta-lactamases which cleave the amide bond of the β-lactam ring of penicillins, cephalosporins or carbapenems (thus inactivating the antibiotic), the metallo-beta-lactamase superfamily includes enzymes which hydrolyze thiol-ester, phosphodiester and sulfuric ester bonds as well as oxydoreductases. [less ▲]

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See detailThe Zinc Center Influences the Redox and Thermodynamic Properties of Escherichia coli Thioredoxin 2
El Hajjaji, Hayat; Dumoulin, Mireille ULg; Matagne, André ULg et al

in Journal of Molecular Biology (2009), 386(1), 60-71

Thioredoxins are small, ubiquitous redox enzymes that reduce protein disulfide bonds by using a pair of cysteine residues present in a strictly conserved WCGPC catalytic motif. The Escherichia coli ... [more ▼]

Thioredoxins are small, ubiquitous redox enzymes that reduce protein disulfide bonds by using a pair of cysteine residues present in a strictly conserved WCGPC catalytic motif. The Escherichia coli cytoplasm contains two thioredoxins, Trx1 and Trx2. Trx2 is special because it is induced under oxidative stress conditions and it has an additional N-terminal zinc-binding domain. We have determined the redox potential of Trx2, the pKa of the active site nucleophilic cysteine, as well as the stability of the oxidized and reduced form of the protein. Trx2 is more oxidizing than Trx1 (–221 mV versus –284 mV, respectively), which is in good agreement with the decreased value of the pKa of the nucleophilic cysteine (5.1 versus 7.1, respectively). The difference in stability between the oxidized and reduced forms of an oxidoreductase is the driving force to reduce substrate proteins. This difference is smaller for Trx2 (ΔΔG°H2O = 9 kJ/mol and ΔTm = 7. 4 °C) than for Trx1 (ΔΔG°H2O = 15 kJ/mol and ΔTm = 13 °C). Altogether, our data indicate that Trx2 is a significantly less reducing enzyme than Trx1, which suggests that Trx2 has a distinctive function. We disrupted the zinc center by mutating the four Zn2+-binding cysteines to serine. This mutant has a more reducing redox potential (–254 mV) and the pKa of its nucleophilic cysteine shifts from 5.1 to 7.1. The removal of Zn2+ also decreases the overall stability of the reduced and oxidized forms by 3.2 kJ/mol and 5.8 kJ/mol, respectively. In conclusion, our data show that the Zn2+-center of Trx2 fine-tunes the properties of this unique thioredoxin. [less ▲]

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See detailZinc complexes with 1,2,4-triazole functionalized amino acid derivatives: Synthesis, structure and b-lactamase assay
Naik, Anil; Beck, Joséphine; Dîrtu, Marinela et al

in Inorganica Chimica Acta (2011), 368

Coordinating abilities of 4R-1,2,4-triazole derivatives (R = glycine ethyl ester (L1), glycine (L2), diethylamino malonate (L3), methionine (L4) and diethyl aminomethylphosphonate (L5)) towards ZnII ions ... [more ▼]

Coordinating abilities of 4R-1,2,4-triazole derivatives (R = glycine ethyl ester (L1), glycine (L2), diethylamino malonate (L3), methionine (L4) and diethyl aminomethylphosphonate (L5)) towards ZnII ions have been studied in solution, in solid state and versus three zinc-b-lactamases. The crystal structure of [Zn3(L4)6(H2O)6] (6) is described; it is the first crystal structure involving a 1,2,4-triazole functionalized methionine. It forms a trinuclear complex with central zinc octahedrally coordinated by only L4, whereas terminal zinc ions coordination sphere is completed by three water molecules. L4 exhibits a dual functionality of a bridging bidentate ligand as well as an anion. A dense hydrogen bonding network connects these trinuclear entity into a 3D supramolecular network. The ZnII ions in 6 are held at equidistance (3.848 Å) which coincidently matches with the corresponding Zn Zn distance in the binuclear zinc enzyme from Bacillus cereus (3.848 and 4.365 Å). Among L1–L5 screened for b-lactamase assay, L4 shows modest inhibition for BcII enzyme. [less ▲]

Detailed reference viewed: 75 (1 ULg)