摘要:
The invention relates to a method of preparing a particle-based composition, comprising: (i) bringing into contact a mixture comprising a dendritic structure and a metal compound precursor in a fluid, under temperature and pressure conditions such that the mixture is not soluble in the fluid; and (ii) chemically converting the metal compound precursor.
摘要:
The present invention relates to compounds of general formula (1): in which, independently of each other, R1 and R2 represent: —OH, or —CH2—O—R3, or —CH2—S—R3, or R3, R4, R5 and R6 representing, independently of each other, —H or a carbon-containing group with 1 to 10 carbon atoms, saturated or unsaturated, optionally substituted with one or more heteroatomic groups. The invention also relates to pharmaceutical compositions containing these compounds, and their uses, in particular in the context of the treatment of cancer.
摘要:
The invention concerns solids comprising a single tungsten oxide layer on a zirconia support and/or titanium dioxide support, characterized in that the tungsten exhibits tetrahedral co-ordination, before and after calcining. The invention also concerns the method for preparing the solids, and their uses as acid catalysis reactions catalyst.
摘要:
The invention is drawn to a novel class of drugs directed against HIV, comprising a peptide or analog comprising a decapeptide, said decapeptide containing (from N-terminus to the C-terminus) a basic amino acid in position 1, an acidic amino acid in positions 2 and 5, and a tryptophan in positions 4, 7, and 8, and to a method of treatment of HIV infections, in particular multidrug-resistant HIV infections.
摘要:
The present invention relates to a macroporous, resorbable and injectable apatitic calcium-phosphate cement with a high compressive strength useful as bone cement and releasing a bone resorption inhibitor, preparation method and uses thereof.
摘要:
The invention relates to a composite material comprising nanoparticles of at least one metal derivative and at least one type of carboxylic and/or sulfonic acid derivative organic compound chemically bound in a covalent manner with said nanoparticles by means of at least one carboxylic and/or sulfonic function.
摘要:
A method of preparing cyclene having formula (I) from triethylenetetraamine having formula (VIII) or ethylenediamine having formula (VIII′) includes a series of steps. The first series of steps (I) includes a step A (one-pot preparation of the compound having formula (IIa) from the compound having formula (VIII)), followed by a step B (transforming the compound having formula (IIa) into cyclene having formula (I)). The second series of steps (II) includes a step C (preparing the compound having formula (IIb) from the compound having formula (VIII)), followed by a step D (transforming the compound having formula (IIb) into cylcene having formula (I)). The third series of steps (III) includes a step E involving the onepot preparation of the compound having formula (IIa) from the compound having formula (VIII), followed by a step B involving the transformation of the compound having formula (IIa) into cyclene having formula (I).
摘要:
The present invention concerns a method for improving plant growth characteristics by increasing expression in a plant of a nucleic acid encoding a CCS52 protein and/or by increasing level and/or activity in a plant of a CCS52 protein. The invention also relates to transgenic plants having improved growth characteristics, such as increased plant size, increased organ size or increased number of organs, which plants have increased expression of a nucleic acid encoding a CCS52 protein.
摘要:
The invention relates to a titanium oxide-based polymer composition. The inventive composition comprises a TiOx(OH)y(H2O)z(x+y−+z=3) titanium oxide-based polymer in the form of a gel or sol. Said polymer, which has a one-dimensional (1D) structure, is made from concentrically-wound fibers having a periodicity which is deduced from the spacing between said fibers, of between 3.5 Å and 4 Å. Each fiber comprises TiO6octahedrons and each TiO6octahedron shares two opposite edges with two adjacent octahedrons (2.times.292 Å) in order to form infinite chains which develop along the axis of a fiber. According to the invention, two adjacent chains form double lines as a result of the shared edges (2.times.3.27 Å). The inventive polymer is suitable for use as a photosensitive element in a photovoltaic cell, such as a sunscreen for a window.
摘要翻译:本发明涉及一种基于氧化钛的聚合物组合物。 本发明的组合物包含凝胶或溶胶形式的TiO x(OH)y(H 2 O)z(x + y + z = 3)氧化钛基聚合物。 具有一维(1D)结构的所述聚合物由具有介于3.5和4之间的从所述纤维之间的间隔推断的周期性的同心缠绕的纤维制成。 每个纤维包括TiO 6八面体,并且每个TiO 6八面体共享两个相对的边缘和两个相邻的八面体(2.282),以形成沿着纤维轴发展的无限链。 根据本发明,作为共享边缘的结果,两个相邻的链形成双线(2/3.27埃)。 本发明的聚合物适合用作光伏电池中的光敏元件,例如用于窗户的防晒剂。
摘要:
The invention relates to a method of preparing a particle-based composition, comprising: (i) bringing into contact a mixture comprising a dendritic structure and a metal compound precursor in a fluid, under temperature and pressure conditions such that the mixture is not soluble in the fluid; and (ii) chemically converting the metal compound precursor.