Abstract: Described as one aspect of the invention are extrusion blow molded articles comprising at least one polyester which comprises: (a) a dicarboxylic acid component comprising: (i) about 90 to about 100 mole % of terephthalic acid residues; (ii) about 0 to about 10 mole % of aromatic and/or aliphatic dicarboxylic acid residues having up to 20 carbon atoms; and (b) a glycol component comprising: (i) about 42 to about 60 mole % ethylene glycol residues; and (ii) about 40 to about 58 mole % residues of 1,4-cyclohexanedimethanol; wherein the total mole % of the dicarboxylic acid component is 100 mole %, and wherein the total mole % of the glycol component is 100 mole %; and wherein the inherent viscosity of the polyester is from 0.50 to 1.0 dL/g as determined in 60/40 (wt/wt) phenol/tetrachloroethane at a concentration of 0.25 g/50 ml at 25° C.

Abstract: The present invention relates to the quantification of organic compounds originating from a chromatography system that does not involve the use of patterns, comprising the continuous conversion of the carbon of the compounds into carbon dioxide (CO2) involving a chemical reaction and the mixing of same, before or after separation, with a known, constant flow of a carbon compound, preferably CO2, with carbon isotope-13 (13C). The mixture is introduced into a mass spectrometer in which the isotopic ratio 12C/13C is continuously measured either in the carbon or in a characteristic ion originating from same. The isotope ratio is converted into a carbon mass flow measurement using on-line isotope dilution.

Abstract: This invention refers to a procedure for anodising aluminium or aluminium alloys in which an aluminium or an aluminium alloy part is submerged an in an aqueous solution at a temperature between 0° C. and 140° C., preferably between 0° C. and 130° C., in which said solution includes: sulphuric acid, tartaric acid, and at least one inorganic salt of an element selected between at least one transition metal, a lanthanide element, an actinide, and combinations of them, and applying a controlled potential difference, obtaining layers of aluminium oxide with properties as good as or even better than those obtained through anodising in traditional chromic acid solutions.

Abstract: This invention is related to a mold for casting and manufacturing of concrete structural columns that includes a main cylindrical body and a plurality of mould components placed inside such main body. Likewise, this invention refers to the process to set the mold and the process to use such mold in casting and manufacturing of concrete structural columns.