Abstract:
The present invention relates to a device and method for the high speed quantitative measurement of biomolecular targets on the surface or in the body of a planar medium for biological analysis. The method, according to the invention, includes the following, steps: a) at least two laser beams (F″) are focused and overlaid on each measuring point of said medium by the simultaneous intersection of these beams to extract a contained hot plasma (P), including a measured chemical element present in the targets and another chemical element exogenous to the targets and present in a known quantity on this medium; b) luminous emission rays for each plasma, corresponding to the quantified element and exogenous element, are detected and analyzed for each measuring point while measuring the brightness of these rays; then c) the concentration in each measuring point of the quantified element is determined through prior calibration of the rays of the qualified element to determine a correlation between the brightness of the rays, specific to said element, and the concentrations of the latter in mixtures of the quantified element and exogenous element in known proportions.
Abstract:
The present invention relates in particular to a method for the quantitative measurement of biomolecular targets that have been deposited on a biochip (1) of the type with a matrix of probes hybridized by the targets, the matrix comprising a multitude of measurement points (2) each comprising a plurality of probes, characterized in that it comprises the following steps: a) at least one laser beam (18) is focused onto each measurement point, in order to extract therefrom a hot confined plasma comprising a chemical element to be quantified that is present in the targets and optionally in the probes; b) the light emission lines from the plasma are detected and analysed for each measurement point, by measuring the respective intensities of these lines; and then c) the concentration in each measurement point of the element or of a group incorporating it within the targets is determined via a prior calibration of the lines establishing a correlation between the intensities of the lines specific to the element to be quantified and given concentrations of this element.
Abstract:
Novel chimeric molecules, termed “half-antibodies”, which are capable of self-assembling to form an epitope recognition site. Using these half-antibodies or a vesicle, a viral particle, a composition or a kit thereof, for therapeutic applications, such as the prevention or treatment of cancers, genetic diseases, infectious diseases, and for in vitro diagnostic applications and detecting biological molecules. The half-antibodies include at least two chimeric molecules A and B, each has a polypeptide domain characteristic of a variable domain of a heavy chain or of a light chain of an antibody, and a nucleotide domain, the nucleotide domain of A and that of B being capable of pairing into a double stranded structure. Biologically active nucleic sequences can be grafted onto these chimeric molecules to prevent the expression of target genes in the interior of a human or non-human mammalian cell.
Abstract:
A system uses thermal solar energy coupled with microwaves and plasma for producing carbon monoxide (CO) and dihydrogen (H2) from carbonated compounds (biomass, domestic waste, sludge from waste water, fossil coal), wherein the obtained gaseous mixture yields, amongst others, hydrocarbon fuels (olefins, paraffin), esters, and alcohols via a Fischer-Tropsch synthesis. In a first step the carbonated compounds are roasted and pyrolized to produce char and dry coal, and a mixture of superheated gases containing CO2, steam, tars and non-condensable volatile materials. The method includes in a second step, and from the pyrolyis products (char or coal, gas mixture), generating a syngas substantially containing a mixture of carbon monoxide and dihydrogen, the mixture being used in Fischer-Tropsch synthesis units. After the Fischer-Tropsch step, the synthesis products are separated in a distillation column after heating in solar furnaces of mixed furnaces (solar/microwave).
Abstract:
The invention relates to a device for separating and/analyzing several molecular targets dissolved in a complex mixture which is characterized in that it comprises a) a matrix of micro-columns, wherein each micro-column (2) comprises an immobilized molecular probe for retaining a specific molecular target contained in the complex mixture by specific probe/target linkage, b) a first capillary network (3) for circulating the complex mixture introduced into the inventive device towards each micro-column of the matrix defined in a), c) a second capillary network (4) for circulating, after elution, the molecular targets retained on the micro-columns towards a sensor (5) for carrying out the recovery and/or analysis thereof, and d) if necessary, a sensor (5), preferably in the form of a mass spectrometer, for carrying out the recovery and/or analysis of different molecular targets.
Abstract:
The present invention relates to a device and method for the high speed quantitative measurement of biomolecular targets on the surface or in the body of a planar medium for biological analysis. The method, according to the invention, includes the following, steps: a) at least two laser beams (F″) are focused and overlaid on each measuring point of said medium by the simultaneous intersection of these beams to extract a contained hot plasma (P), including a measured chemical element present in the targets and another chemical element exogenous to the targets and present in a known quantity on this medium; b) luminous emission rays for each plasma, corresponding to the quantified element and exogenous element, are detected and anglyset each measuring point while measuring the brightness of these rays; then c) the concentration in each measuring point of the quantified element is determined through prior calibration of the rays of the qualified element to determine a correlation between the brightness of the rays, specific to said element, and the concentrations the latter in mixtures of the quantified element and the exogenous element in known proportions.
Abstract:
A system uses thermal solar energy coupled with microwaves and plasma for producing carbon monoxide (CO) and dihydrogen (H2) from carbonated compounds (biomass, domestic waste, sludge from waste water, fossil coal), wherein the obtained gaseous mixture yields, amongst others, hydrocarbon fuels (olefins, paraffin), esters, and alcohols via a Fischer-Tropsch synthesis. In a first step the carbonated compounds are roasted and pyrolized to produce char and dry coal, and a mixture of superheated gases containing CO2, steam, tars and non-condensable volatile materials. The method includes in a second step, and from the pyrolyis products (char or coal, gas mixture), generating a syngas substantially containing a mixture of carbon monoxide and dihydrogen, the mixture being used in Fischer-Tropsch synthesis units. After the Fischer-Tropsch step, the synthesis products are separated in a distillation column after heating in solar furnaces of mixed furnaces (solar/microwave).
Abstract:
The invention relates to a method of analysing molecular targets contained in a complex mixture, comprising the following steps consisting in: a) bringing the mixture of molecular targets to be analysed into contact with an array of different types of primary probes, whereby each type of primary probe forming the array can bind specifically to a type of target selected from among the molecular targets, under conditions that enable specific binding between the molecular targets and the primary probes; b) optionally eliminating the primary probes that are not bound specifically to a molecular target; c) separating the molecular targets and the primary probes which are bound specifically in a probe/target complex, such as to recover the array of primary probes representing a fingerprint of the molecular targets to be analysed; and d) quantitatively analysing the primary probes eluted in step c.