摘要:
A process of flocculating microbial cell material from a suspending medium which contains cell material, comprising adding to the suspending medium a first polymeric material which is cationic and has intrinsic viscosity of not more than 2 dl/g, and subsequently or simultaneously adding to the suspending medium a second polymeric material which is cationic or substantially non-ionic and has intrinsic viscosity of at least 4 dl/g, and allowing the cell material to flocculate.
摘要:
The invention provides metal-chelating poly(ether amide) polymers useful in preparation of polymer compositions for delivering a variety of cargo molecules, such as bioactive agents. In solution metal ions and cargo molecules, such as vaccine epitopes, that include metal avid amino acids can be loaded into the polymer compositions and held in a non-covalent complex. Nanoparticles of such polymer compositions can also be prepared directly from the solution.
摘要:
A process of separating suspended solids from a fermentation liquor by subjecting the liquor to a solids-liquid separation stage, wherein the fermentation liquor is produced in a fermentation process for the production of a fermentation product, which liquor comprises water, lignin and BOD, wherein the solids liquid separation stage is assisted by a treatment system, characterised in that the treatment system comprises either, (i) a cationic polymer having an intrinsic viscosity (IV) of at least 4 dl/g at a dose of above 2 kg/tonne based on dry weight of suspension, or (ii) a cationic polymer having an intrinsic viscosity (IV) of at least 4 dl/g and, (iii) an anionic polymer, and/or (iv) a cationic polymer of intrinsic viscosity of below 4 dl/g and a cationic charge density of at least 3 meq/g and/or (v) inorganic coagulants and/or (vi) charged microparticulate material.
摘要:
A microorganism which is Rhodococcus rhodochrous strain NCIMB 41164 or a mutant thereof. A method of culturing the microorganism in a culture medium comprising urea or urea derivative is claimed. A nitrite hydratase obtainable from the microorganism is claimed. Also claimed is a process of preparing an amide from the corresponding nitrite wherein the nitrite is subjected to a hydration reaction in an aqueous medium in the presence of a biocatalyst selected from the group consisting of a microorganism which is a Rhodococcus rhodochrous strain NUMB 41164, a mutant thereof and a nitrite hydratase obtainable from Rhodococcus rhodochrous strain NCIMB 41164 or a mutant thereof. Also claimed is a method of storing the Rhodococcus rhodochrous NUMB 41164.
摘要:
A biocatalytic method for the synthesis of 2-(N,N-dimethylamino)ethanol and/or choline esters of acrylic acid and/or methacrylic acid, namely a method or process for the manufacture of acrylylcholine and/or methacrylylcholine, comprising reacting 2-(N,N-dimethylamino)ethanol and/or choline with acrylyl-CoA and/or methacrylyl-CoA in the presence of a biocatalyst with choline acetyltransferase activity, where preferably the acrylyl-CoA and/or methacrylyl-CoA is formed by reaction of acrylate and/or methacrylate with coenzyme A in the presence of an energy providing substance and a biocatalyst with S-acetyl coenzyme A synthetase activity (acetyl CoA synthetase activity); to (especially transformed, that is genetically modified) organisms having choline acetyltransferase activity and preferably in addition the acetyl CoA synthetase activity and their use in said process or method; the use of a biocatalyst with choline acetyltransferase activity to carry out the transfer of the (meth)acrylyl moiety from (meth)acrylyl CoA to 2-(N,N-dimethylamino)ethanol and/or choline, in order to manufacture 2-(N,N-dimethylamino)ethyl(meth)acrylate and/or (meth)acrylylcholine; and further uses, organisms, processes and methods as described in the specification.
摘要:
A hand saw including a housing defining a channel. The channel is adapted to receive a blade having a top edge, a bottom edge and two sides. The hand saw includes at least one bias member positioned adjacent to one of the sides of the blade in the housing and a lever coupled to the bias member. The lever is movable between an open position where the bias member is disengaged from the blade, and a closed position, where the bias member substantially engages at least one of the sides of the blade to secure the blade in the housing.
摘要:
A process for preparing a polymer of an ethylenically unsaturated monomer, in which the monomer is obtainable from a biocatalysed reaction or a fermentation process, and wherein the monomer contains cellular material and/or components of a fermentation broth, forming the polymer by polymerising the ethylenically unsaturated monomer or a monomer mixture comprising the ethylenically unsaturated monomer, wherein there is substantially no removal of the cellular material and/or components of the fermentation broth from the ethylenically unsaturated monomer.
摘要:
A system and method for payroll processing. In one embodiment, the system includes a first database, a second database, and a processor operably connected to the first and second databases. The first database contains information about an employer, and the second database contains a PDF template. The processor is operable to create a filable PDF tax form from the PDF template, with the filable PDF tax form including data retrieved from and/or calculated from the first database. The method of the present invention involves the steps of retrieving with the processor a PDF template from the second database and at least one data from the first database, and then producing a filable PDF tax form from the retrieved PDF template and from the retrieved and/or calculate data from the first database. The present invention provides an employer with control over the generation, validation, correction, completion, and even filing of the employer's tax forms, and creates forms viewable and printable by a variety of systems.
摘要:
A process of producing fermentation product comprising the steps of, (i) forming an acidified suspension of particulate plant derived material comprising a first polysaccharide which is more readily hydrolysable and a second polysaccharide which is more difficult to hydrolyse, (ii) allowing the first polysaccharide to undergo hydrolysis by action of the acid at a temperature of at least 50° C. under conditions such that the first polysaccharide is hydrolysed and thereby forming a mixture of an aqueous liquor containing dissolved sugar and a solid residue containing the second polysaccharide, (iii) subjecting the mixture to one or more separation stages in which the solid residue and aqueous sugar liquor are substantially separated from each other, (iv) optionally washing the residue substantially free of the acid and the sugar, (v) passing the solid cellulosic residue to a further treatment stage in which the residue is subjected to the action of dilute acid at a temperature of at least 50° C. under conditions such that the second polysaccharide is hydrolysed and thereby forming a mixture of an aqueous liquor containing dissolved sugar and a solid residue, (vi) subjecting the mixture to one or more separation stages in which the solid residue and aqueous sugar liquor are substantially separated from each other, (vii) optionally washing the residue substantially free of the sugar, (viii) adjusting the pH of the aqueous liquor from stages (iii), (iv), (vi) and (vii) to a pH of at least 4, (ix) passing the aqueous liquor from stage (viii) to a fermentation stage in order to produce a fermentation product, (x) separating the fermentation product from the broth, wherein the separation stage in steps (iii) and/or (vi) is assisted by flocculation of the waste by-product, employing one or more flocculating agent(s) which are water soluble or swellable polymers or charged microparticulate material. Typically such fermentation products include for instance ethanol, glycerol, acetone, n-butanol, butanediol, isopropanol, butyric acid, methane, citric acid, fumaric acid, lactic acid, propionic acid, succinic acid, itaconic acid, acetic acid, acetaldehyde, 3-hydroxypropionic acid, glyconic acid, tartaric acid and amino acids such as L-glutaric acid, L-lysine, L-aspartic acid, L-tryptophan, L-arylglycines or salts of any of these acids.
摘要:
A mass spectrometer comprises an ion source which produces an ion beam from a substance to be analysed and a detector to detect a quantity of ions incident thereon. The detector includes two elements (16, 18) each of which detect a part of the quantity of ions and an attenuation device attenuates the quantity of ions reaching one of the detector elements. At least one of the detector elements (16, 18) is connected to a time to digital converter (TDC) to allow counting of the ions and at least one of the detector elements is connected in parallel to both a time to digital converter (TDC) and an analogue to digital converter (ADC).