A synthetic, crystalline, porous material containing oxides of silicon and boron is disclosed, which, in the non-calcined state, has the following empyrical formula: mM2/nO,pR,xM2O3,(1-x)B2O3,yMO2,qH2O and, in the calcined and anhydrous state, has the following empyrical formula: mM2/nO,xM2O3,(1-x)B ...
The synthetic peptide TT3, the amino acid sequence of which corresponds to the region 947-967 of the tetanus toxin is recognised by different human Th cell clones in association with a wide range of alleles of the human major histocompatibility complex (MHC). Said peptide contains at least two epito ...
Synthetic peptides are described having an amino acid sequence corresponding to that of the T epitopes of tetanus toxin and their analogs able to be recognised by different human T cell clones in association with a wide range of alleles of the human major histocompatibility complex (MHC). Said pepti ...
Disclosed is an integrated process for producing olefins by starting from methane containing gas mixture, which process essentially comprises the following steps:
An aqueous gellable composition for use to modify thepermeability of high-permeability regions in petroleumreservoirs, wherein the aqueous gellable compositioncontaining an organic, water-soluble polymer crosslinkablewith chrome ion and a crosslinking and gel-retarding systemdefinable by the formula ...
A process for the epoxidation of olefinic compounds comprising reacting said compounds with hydrogen peroxide introduced as such or produced by substances under the reaction conditions, in the presence of synthetic zeolites containing titanium atoms corresponding to the general formula:
A biosensor is disclosed, together with the relevant process for preparing it, which is constituted by an enzymatic membrane, a device of EOS or CHEMFET type containing at its surface silicon oxide adhering to said membrane by means of a polysiloxanic matrix, characterized in that the enzyme is chem ...
The invention relates to a zirconium phosphate in particles having sizes comprised within the range of from 1 to 100 .mu.m, a lamellar structure with interlayer distance, in the anhydrous state, comprised within the range of from 7.9 to 8.2 .ANG. and a surface area comprised within the range of from ...
Coupling agents of general formula ##STR1## and their use in a method for the termination of living polymers obtained by the anionic polymerization of dienic and/or vinylaromatic monomers.
