Search Results - "Collet, Hélène"

Determination of Dendrigraft Poly-l-Lysine Diffusion Coefficients by Taylor Dispersion Analysis by Cottet, Hervé, Martin, Michel, Papillaud, Alain, Souaïd, Eddy, Collet, Hélène, Commeyras, Auguste

“…This work focuses on the physicochemical characterization of dendrigraft poly-l-lysines (DGLs) obtained by polymerization of N-carboxyanhydride in buffered…”
Get full text

Geochemical Sourcing of Flint Artifacts from Western Belgium and the German Rhineland: Testing Hypotheses on Gravettian Period Mobility and Raw Material Economy by Moreau, Luc, Brandl, Michael, Filzmoser, Peter, Hauzenberger, Christoph, Goemaere, Éric, Jadin, Ivan, Collet, Hélène, Hauzeur, Anne, Schmitz, Ralf W.

“…Identifying the geological and geographical origin of lithic raw materials is critical to effectively address prehistoric forager raw material economies and…”
Get full text

An Expeditious Multigram-Scale Synthesis of Lysine Dendrigraft (DGL) Polymers by Aqueous N-Carboxyanhydride Polycondensation by Collet, Hélène, Souaid, Eddy, Cottet, Hervé, Deratani, André, Boiteau, Laurent, Dessalces, Guy, Rossi, Jean-Christophe, Commeyras, Auguste, Pascal, Robert

“…The synthesis and characterisation of new arborescent architectures of poly(L‐lysine), called lysine dendrigraft (DGL) polymers, are described. DGL polymers…”
Get full text

Monitoring surface functionalization of dendrigraft poly-l-lysines via click chemistry by capillary electrophoresis and Taylor dispersion analysis by Liu, Tao, Oukacine, Farid, Collet, Hélène, Commeyras, Auguste, Vial, Laurent, Cottet, Hervé

“…► Monitoring click chemistry reactions by pressure assisted capillary electrophoresis. ► Checking the homogeneity of decorated dendrimers by capillary…”
Get full text

Raw material exploitation strategies on the flint mining site of Spiennes (Hainaut, Belgium) by Collet, Hélène, Lavachery, Philippe, Woodbury, Michel

“…The flint mines of Spiennes (Hainaut Province, Belgium) are among the most important mining sites in Europe as evidenced by the huge extension of the site and…”
Get full text

Interaction and Transport of Poly(l-lysine) Dendrigrafts through Liposomal and Cellular Membranes:  The Role of Generation and Surface Functionalization by Tsogas, Ioannis, Theodossiou, Theodossis, Sideratou, Zili, Paleos, Constantinos M, Collet, Hélène, Rossi, Jean Christophe, Romestand, Bernard, Commeyras, Auguste

“…Two generations of poly(l-lysine) dendrigrafts (DGLs) were studied with regard to their ability to interact with and translocate through liposomal and cellular…”
Get full text

First insights into human mobility in Neolithic Belgium using strontium isotopic analysis and proteomics: A case study of Grotte de La Faucille (Sclayn, province of Namur) by Hattum, IJk, Costas‐Rodríguez, Marta, Hobin, Kasper, Vanhaecke, Frank, Vandendriessche, Hans, Collet, Hélène, Cattelain, Pierre, Toussaint, Michel, Goffette, Quentin, Dhaenens, Maarten, Palmer, Jessica L. A., Daled, Simon, Crombé, Philippe, Groote, Isabelle

“…Objectives So far, no 87Sr/86Sr mobility studies have been done for Neolithic remains from Belgium and information on the Sr isotopic variability in the region…”
Get full text

Functionalisation of free amino groups of lysine dendrigraft (DGL) polymers by Rossi, Jean-Christophe, Boiteau, Laurent, Collet, Hélène, Mbondo Tsamba, Bill, Larcher, Nicolas, Pascal, Robert

“…Lysine dendrigraft polymers (DGL) are promising candidates as carriers for targeted drug/gene delivery and bio-imaging, as such deserving extensive chemical…”
Get full text

Poly(l-proline) II Helix Propensities in Poly(l-lysine) Dendrigraft Generations from Vibrational Raman Optical Activity by Johannessen, Christian, Kapitán, Josef, Collet, Hélène, Commeyras, Auguste, Hecht, Lutz, Barron, Laurence D

“…Vibrational Raman optical activity (ROA), measured as small circularly polarized components in Raman scattering from chiral molecules, was applied to study the…”
Get full text

Mining and Quarrying. Geological Characterisation, Knapping Processes and Distribution Networks during Preand Protohistoric Times by Maria Gurova, Hélène Collet, Anne Hauzeur

Get full text

Mining and Quarrying. Geological Characterisation, Knapping Processes and Distribution Networks during Pre- and Protohistoric Times: 7th International Conference in Mons and Spiennes (Belgium), September 28th – October 1st 2016 (UISPP Commission on Flint Mining in Pre- and Protohistoric Times) by Gurova, Maria, Collet, Hélène, Hauzeur, Anne

Get full text

Middle Neolithic fluorites in Northern France and Belgium: Characterization, sourcing and methodological limitations by Goemaere, Eric, Vanmontfort, Bart, Bonjean, Dominique, Bosquet, Dominique, Bostyn, Françoise, Cayol, Nicolas, Colas, Caroline, Collet, Hélène, Delbey, Thomas, Delye, Emmanuel, Golitko, Mark, Jadin, Ivan, Jungels, Cécile, Leroy-Langelin, Emmanuelle, Monchablon, Cécile, Praud, Ivan

“…•Fluorite pearls characterize Middle Neolithic sites in Belgium and Northern France.•Fluorite associated to Michelsberg culture, Spiere group and northern…”
Get full text

Dynamic co-evolution of peptides and chemical energetics, a gateway to the emergence of homochirality and the catalytic activity of peptides by Commeyras, Auguste, Taillades, Jacques, Collet, Hélène, Boiteau, Laurent, Vandenabeele-Trambouze, Odile, Pascal, Robert, Rousset, Alain, Garrel, Laurence, Rossi, Jean-Christophe, Biron, Jean-Philippe, Lagrille, Olivier, Plasson, Raphaël, Souaid, Eddy, Danger, Grégoire, Selsis, Franck, Dobrijévic, Michel, Martin, Hervé

“…We propose a scenario for the dynamic co-evolution of peptides and energy on the primitive Earth. From a multi component system consisting of hydrogen cyanide,…”
Get full text

Prebiotic synthesis of sequential peptides on the Hadean beach by a molecular engine working with nitrogen oxides as energy sources by Commeyras, Auguste, Collet, Hélène, Boiteau, Laurent, Taillades, Jacques, Vandenabeele-Trambouze, Odile, Cottet, Hervé, Biron, Jean-Philippe, Plasson, Raphaël, Mion, Louis, Lagrille, Olivier, Martin, Hervé, Selsis, Franck, Dobrijevic, Michel

“…Addressing the still open question of the prebiotic origin of sequential macromolecules (peptides, nucleic acids) on the primitive Earth, we describe a…”
Get full text

A new simple and quantitative synthesis of α-aminoacid-N-carboxyanhydrides (oxazolidines-2,5-dione) by Collet, Hélène, Bied, Catherine, Mion, Louis, Taillades, Jacques, Commeyras, Auguste

“…Nitrosation of chiral N-carbamoylaminoacids with a mixture of NO and O 2 gives, with the same configuration and in quantitative yield the corresponding…”
Get full text

From prebiotic macromolecules to synthetic polypeptides: a new, efficient synthesis of α-amino acid N-carboxyanhydrides (NCAs) by Boiteau, Laurent, Collet, Hélène, Lagrille, Olivier, Taillades, Jacques, Vayaboury, Willy, Giani, Olivia, Schué, François, Commeyras, Auguste

“…While polypeptide materials present important application potentialities, the expense of amino acid N‐carboxyanhydride (NCA) monomers strongly limits their…”
Get full text

N-Carbamoyl Amino Acid Solid–Gas Nitrosation by NO/NO x : A New Route to Oligopeptides via α-Amino Acid N-Carboxyanhydride. Prebiotic Implications by Taillades, Jacques, Collet, Hélène, Garrel, Laurence, Beuzelin, Isabelle, Boiteau, Laurent, Choukroun, Henri, Commeyras, Auguste

Get full text

N-Carbamoyl Amino Acid Solid-Gas Nitrosation by NO/NO^sub x^: A New Route to Oligopeptides via [alpha]-Amino Acid N-Carboxyanhydride. Prebiotic Implications by Taillades, Jacques, Collet, Hélène, Garrel, Laurence, Beuzelin, Isabelle, Boiteau, Laurent, Choukroun, Henri, Commeyras, Auguste

“…α-N-Carbamoyl amino acid (CAA), whose conditions of formation in a prebiotic hydrosphere have been described previously (Taillades et al. 1998), could have…”
Get full text

Determination of Dendrigraft Poly-L-Lysine Diffusion Coefficients by Taylor Dispersion Analysis by Cottet, Herve, Martin, Michel, Papillaud, Alain, Souaied, Eddy, Collet, Helene, Commeyras, Auguste

“…This work focuses on the physicochemical characterization of dendrigraft poly-L-lysines (DGLs) obtained by polymerization of N-carboxyanhydride in buffered…”
Get full text

Interaction and Transport of Poly(L-lysine) Dendrigrafts through Liposomal and Cellular Membranes: The Role of Generation and Surface Functionalization by Tsogas, Ioannis, Theodossiou, Theodossis, Sideratou, Zili, Paleos, Constantinos M, Collet, Helene, Rossi, Jean Christophe, Romest, Bernard, Commeyras, Auguste

“…Two generations of poly(L-lysine) dendrigrafts (DGLs) were studied with regard to their ability to interact with and translocate through liposomal and cellular…”
Get full text