6 results about "Tridecane" patented technology

The application provides a production device of a trans-2-[2-(5- 18 F]fluorotridecyl)cyclopropyl]acetic acid (hereinafter referred to as "compound I") liquid composition, comprising: a pretreatment module for enriching 18 F ions; a reaction module for reacting the enriched 18 F ions with a compound I precursor to generate a compound I tert-butyl ester, and performing a tert-butyl ester removal reaction on the compound I tert-butyl ester to obtain a compound I crude product; a purification module for purifying the compound I crude product to obtain a compound I pure product; and a prescription module for prescribing the compound I pure product obtained by purification as the compound I liquid composition. The above device has a simple process operation procedure, high yield, and can meet the use of multiple people in a single preparation, and the prepared compound I liquid composition can be directly used in clinical treatment. The application also provides a method for preparing the compound I liquid composition by using the above device and the use of the above device in preparing the compound I liquid composition.

The invention provides a marine fungus-derived petroleum degrading enzyme, a gene A6006 and application thereof, belongs to the crossing field of biological enzyme technology and environmental remediation, and provides the marine fungus-derived petroleum degrading enzyme, the amino acid sequence of which is shown as SEQ ID NO.2. The gene A6006 of the marine fungus-derived petroleum degrading enzyme has the advantages that the gene A6006 of the marine fungus-derived petroleum degrading enzyme has the advantages that the gene A6006 of the marine fungus-derived petroleum degrading enzyme has the advantages that the gene A6006 of the marine fungus-derived petroleum degrading enzyme can be used for degrading petroleum; the nucleotide sequence of the gene after being optimized by an escherichia coli codon is shown as SEQ ID NO. 1; the marine fungus-derived petroleum degrading enzyme provided by the invention can degrade dodecane, tridecane, tetradecane, pentadecane, hexadecane, heptadecane, octadecane, hexadecanoic acid, naphthalene, phenanthrene and pyrene; and the degradation effect on tetradecane, hexadecane and naphthalene is better.

The invention discloses porous polycaprolactone microspheres for tissue filling and a preparation method of the porous polycaprolactone microspheres, and relates to the field of biomedical materials. The microsphere is composed of polycaprolactone, the diameter of the microsphere is 40-70 [mu] m, the dispersion coefficient of the microsphere is less than 5%, the porosity of the microsphere is 55-85%, and the surface of the microsphere is provided with a uniform open pore structure formed by tridecane. According to the preparation method, a microfluidic technology is adopted, a tridecane-containing polycaprolactone dichloromethane solution is taken as a dispersion phase, a polyvinyl alcohol aqueous solution is taken as a continuous phase, an oil-in-water emulsion is formed through microchannel shearing, and curing, washing and freeze-drying are performed to obtain the tridecane-containing polycaprolactone / polyvinyl alcohol composite material. The microspheres disclosed by the invention have excellent monodispersity and a porous structure, and can remarkably promote fibroblast proliferation and collagen secretion and induce moderate inflammatory response to activate tissue regeneration. The process is simple and controllable, and the obtained microspheres have injectability and a tissue repair promoting function and have application prospects in the field of soft tissue repair.

The present invention relates to a composition containing natural pyrethrin and a phosphorus-based antioxidant selected from the group P. Group P: tetraphenyldipropylene glycol diphosphite, diisodecylphenylphosphite, diphenyl mono (2-ethylhexyl) phosphite, di-n-decylphenylphosphite, diphenylmono (tridecyl)phosphite, 3,9-bis(nonylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane, 2,2'- methylenebis(4,6-di-tert-butylphenyl) 2-ethylhexylphosphite, hydrogenated bisphenol A pentaerythritol phosphite polymer, distearyl pentaerythritol diphosphite, tris(2,4-di-tert-butylphenyl) phosphite, and tris(tridecyl) phosphite.

A method for producing an acetic acid bacteria-containing composition is provided. The method includes culturing acetic acid bacteria of the genus Acetobacter, collecting the bacteria, and washing the bacteria. The acetic acid bacteria-containing composition includes nonanal, methylheptenone, dimethyl trisulfide, and 2-tridecanone so that the peak area ratio of nonanal to methylheptenone (nonanal:methylheptenone) is 1:10 to 100:1, the peak area ratio of nonanal to dimethyl trisulfide (nonanal:dimethyl trisulfide) is 1:100 to 50:1, and the peak area ratio of nonanal to 2-tridecanone (nonanal:2-tridecanone) is 1:100 to 100:1.

The present invention addresses the problem of providing a 2,2-bis(4-hydroxyphenyl)tridecane crystal that has high thermal stability and sufficient fluidity and is suitable for industrial production. As a solution, the present invention provides a 2,2-bis(4-hydroxyphenyl)tridecane crystal that exhibits an endothermic peak with a peak top temperature falling within the range of 84-96°C based on differential scanning calorimetric analysis.