Abstract: A candidate hydrogen storage material, M, capable of reaction with hydrogen to form a hydride, MHm (m=number of H atoms per formula unit), and to subsequently release hydrogen on demand, is processed electrochemically to enhance its absorption/desorption properties. For example, a magnesium hydride (MgH2) composition, arranged as a positive electrode, is reduced with lithium ions in a direct current electrolytic cell to form nanometer-size particles of magnesium (and lithium hydride). The cell operation may be reversed to oxidize magnesium to nanometer size particles of magnesium hydride. Thereafter, the nanometer-size particles of M/MHm adsorb and desorb hydrogen at higher yields and under more moderate storage processing conditions.
Type:
Grant
Filed:
November 20, 2007
Date of Patent:
September 20, 2011
Assignees:
GM Global Technology Operations LLC, Universite de Picardie, Jules Verne
Inventors:
Gholam-Abbas Nazri, Luc M. A. Aymard, Yassine Oumellal, Aline Dominique Rougier, Jean-Marie Tarascon
Abstract: The invention relates to computer networks and to a digital data protection thereon, in particular to a method for the distributed backup of a digital data block (B) in an computer network comprising a DHT distributed hash table and at least one node NO, wherein said NO nodes are connected to said network. The inventive method consists in dividing said block B into digital data r fragments F, in storing the fragment F in the NOF resource memories, in recording couples (block B, node NOF) and (node NOF, fragment F) in the DHT parts contained in at least two nodes and in a centralised server when no operation on the DHT or storage operation is carried out during said process.
Abstract: A lithium battery comprises a negative electrode composition that uses lithium hydride and a second metal. The negative electrode composition is activated by infusing lithium into particles of the second metal hydride to form lithium hydride and the second metal. As the battery is discharged lithium is released from the electrode and the second metal hydride formed. Charging of the battery re-infuses lithium into the negative electrode composition with the re-formation of lithium hydride.
Type:
Grant
Filed:
May 16, 2007
Date of Patent:
June 15, 2010
Assignees:
GM Global Technology Operations, Inc., Universite de Picardie, Jules Verne
Abstract: The present invention relates to the use of an alkyl glycoside or of a mixture of at least two alkyl glycosides as agent intended for inhibiting microbial growth, in particular in a cosmetic, pharmaceutical or food composition.
Type:
Application
Filed:
March 31, 2009
Publication date:
December 10, 2009
Applicants:
LVMH RECHERCHE, UNIVERSITE DE PICARDIE JULES VERNE
Inventors:
Nicolas Thiebault, Jean-Christophe Archambault, Patrice Andre, Florence Pilard, Vincent Moreau
Abstract: The present invention relates to a novel use of alkyl glycosides and of mixtures of alkyl glycosides having anti-ageing and/or calming properties as active agents in cosmetic compositions, and to methods of cosmetic care using the said compositions.
Type:
Application
Filed:
March 31, 2009
Publication date:
November 5, 2009
Applicants:
LVMH RECHERCHE, UNIVERSITE DE PICARDIE JULES VERNE
Inventors:
Nicolas Thiebault, Jean-Christophe Archambault, Patrice Andre, Florence Pilard, Vincent Moreau
Abstract: A lithium battery comprises a negative electrode composition that uses lithium hydride and a second metal. The negative electrode composition is activated by infusing lithium into particles of the second metal hydride to form lithium hydride and the second metal. As the battery is discharged lithium is released from the electrode and the second metal hydride formed. Charging of the battery re-infuses lithium into the negative electrode composition with the re-formation of lithium hydride.
Type:
Application
Filed:
May 16, 2007
Publication date:
November 20, 2008
Applicants:
GM GLOBAL TECHNOLOGY OPERATIONS, INC., UNIVERSITE de PICARDIE. JULES VERNE
Abstract: The invention relates to computer networks and to a digital data protection thereon, in particular to a method for the distributed backup of a digital data block (B) in an computer network comprising a DHT distributed hash table and at least one node NO, wherein said NO nodes are connected to said network. The inventive method consists in dividing said block B into digital data r fragments F, in storing the fragment F in the NOF resource memories, in recording couples (block B, node NOF) and (node NOF, fragment F) in the DHT parts contained in at least two nodes and in a centralised server when no operation on the DHT or storage operation is carried out during said process.
Abstract: The invention relates to cyclodextrin derivatives of formula (I): in which: R1?—NH-E-AA-(L1)p(L2)q where E=a linear or branched Cl-Cl5 hydrocarbon-based group with, optionally, one or more hetero atoms; AA=the residue of an amino acid; L1 and L2=a C6-C24 hydrocarbon-based group with, optionally, one or more hetero atoms; p and q=0 or 1, at least one being ?0; R2?H, —CH3, isopropyl, hydroxypropyl, sulphobutyl ether; R3?H or R2, except when R2=hydroxypropyl; all the R4?—OH or R2, except when R2=hydroxypropyl, or at least one of the R4?R1; n=5, 6 or 7. The invention also relates to a process for preparing them, and to inclusion complexes and organized surfactant systems comprising them.
Type:
Application
Filed:
October 21, 2004
Publication date:
June 21, 2007
Applicants:
Commissariat A L'Energie Atomique, Universite De Picardie Jules Verne
Inventors:
Bruno Perly, Stephane Moutard, Florence Pilard