摘要:
The present invention relates to a polymeric material having one or more nanoparticles embedded within the surface layer of a single side of the material. In some embodiments, the nanoparticles are microbiocidal nanoparticles which impart antimicrobial characteristics to the polymeric material within which they sprayed and pushed by are embedded.
摘要:
The invention relates to the field of fiber structures, preferably adapted for use with fiber Bragg gratings in sensors. The fiber structure comprises a core and a cladding surrounding the core, a central micro structure (1) comprising a first plurality of longitudinal holes, wherein the central microstructure (1) is adapted for guiding optical radiation and for birefringence in the core, a side microstructure (2) comprising a second plurality of longitudinal holes, wherein the side microstructure (2) is at least partly surrounding the central microstructure (1) and is adapted for providing a predetermined mechanical anisotropy (anisotropic response to mechanical strain, or as anisotropic mechanical stiffness), a pressure responsive unit adapted for converting an isotropic pressure force to birefringence changes on the core, a lateral force responsive unit adapted for converting a directional pressure force to birefringence changes on the core, a temperature responsive unit adapted for converting temperature to birefringence changes on the core, and a birefringence responsive unit adapted for converting birefringence in the core to wavelength information. In this way, a fiber structure is provided that allows increasing the ratio of mechanical to thermal sensitivity up to several orders of magnitude with similar sized mode areas.
摘要:
The subject of the invention relates to 1-aminoalkylphosphonate diaryl esters of formula I, in which Bt represents biotin, W is a hydrocarbon linker chain of 5 to 10 carbon atoms, Y is the amino acid residues in an amount of 0 to 4, R is a substituent corresponding to the side chain of valine, alanine, leucine, phenylalanine, 4-guanidinephenylglycine, or 2-aminobutyric acid (Abu), X is the hydrogen or a compound selected from the group consisting of mercaptomethyl (S-methyl), methoxy (O-methyl), or carboxymethyl, and their use as inhibitors of serine proteases, and the low molecular weight molecular probes to detect the catalytically active forms of the enzymes. A process for preparing 1-aminoalkylphosphonate diaryl esters of formula I, in which Bt represents biotin, W is a hydrocarbon linker chain of 5 to 10 carbon atoms, Y is the amino acid residues in an amount of 0 to 4, R is a substituent corresponding to the side chain of valine, alanine, leucine, phenylalanine, 4-guanidinephenylglycine, or 2-aminobutyric acid (Abu), X is the hydrogen or a compound selected from the group consisting of mercaptomethyl (S-methyl), methoxy (O-methyl), or carboxymethyl relies on application of triaryl phosphite, obtained from the phenol substituted at para position phosphorus (III) chloride in refluxing acetonitrile and is subjected to amidoalkylation reaction with benzyl carbamate and an aldehyde such as acetaldehyde, propionic aldehyde, iso -butyric aldehyde, phenylacetic aldehyde, p-nitrobenzoic aldehyde and isovaleric aldehyde, followed by the synthesis of hydrobromide salts of 1-aminoalkylphosphonate diaryl esters, in which the benzyloxycarbonyl (Cbz) protective group is removed, and in the next step is reacted with an amino acid containing protected α-amino group in the presence of a coupling reagent. The resulting phosphonic dipeptide containing tert-butoxycarbonyl (t-Boc) protective group is subjected to deprotection of α-amino group and obtained dipeptidyl 1-aminoalkylphosphonate diaryl ester is coupled with another amino acid with protected α-amino group, biotin or a derivative thereof in a manner analogous to that described above.
摘要:
The present invention relates to a polymeric material having one or more nanoparticles embedded within the surface layer of a single side of the material. In some embodiments, the nanoparticles are microbiocidal nanoparticles which impart antimicrobial characteristics to the polymeric material within which they sprayed and pushed by are embedded.
摘要:
The invention relates to a method for assessing the turbulence parameters of a medium, characterized in that said method includes the following steps: illuminating, by means of a laser beam propagating in said medium, a film made of a photochromic organic material that may include azobenzene, spyropyrane, stylbene, coumarin, or fulgide molecules, said illumination creating a surface array in which the film comprises streaks having deformations based on turbulence parameters; acquiring images containing elementary areas of structures related to said streaks, more or less reduced and representative of the turbulence parameters of said medium; and processing said images to assess the turbulence parameters of said medium. The invention also relates to a device for implementing said method.