摘要:
The present invention relates to a process for preparing dye-comprising aqueous polymer dispersions by free-radical aqueous emulsion polymerization of ethylenically unsaturated monomers in the presence of free-radical initiators, in which at least some of the monomers are employed in the form of an oil-in-water emulsion E1 whose disperse phase comprises at least one oil-soluble dye, wherein the disperse phase of E1 is formed essentially of dye-comprising monomer droplets having a diameter
摘要:
Described is a method and a device for purifying waste water, in particular by means of anaerobic purification. The method is carried out in a waste water- and sludge-receiving container under generation of gas, the developing gas being trapped by a gas collector and the circulation formed by the ascending gas being used for loosening the sludge which has settled on the bottom of the container. Such a method is to be developed in a constructionally simple and more efficient way. To this end the settled sludge should be sucked from the bottom by a gas lifting effect provided by the ascending gas, and should be passed into the upper portion of the container in a condition separated from the waster water in the container, and returned into the waste water.
摘要:
A process for regenerating used foundry sand having high oolitic level and, more particularly, a process as aforesaid wherein the used foundry sand is subjected to magnetic separation by one or more high power magnets for dividing the used foundry sand into a first highly magnetic stream containing a high degree of oolite particles and a second less magnetic stream having a relatively high degree of sand particles.
摘要:
A process for separating bentonite and carbon carrier particles from an air-dust mixture generated from a mechanical used-sand reclamation unit and, more particularly, a process as aforesaid wherein the bentonite and carbon carrier particles are recycled to a foundry sand preparation unit.
摘要:
The present invention relates to a method for the lysis of cells, especially bacterial cells and the isolation of nucleic acids. The sample is treated with lysis solution that comprises at least one liquid that is not miscible with water and heated. Afterwards the mixture is cooled down and water is added so that after cooling a two phase system is generated. The nucleic acids can be found in the aqueous phase.
摘要:
The present invention relates to a method and kit for the isolation of cells from a sample. The sample is treated with an extraction solution that comprises at least MgCl2 and/or an ionic liquid resulting in the isolation of preferably viable cells.
摘要:
The present invention relates to a process for preparing dye-comprising aqueous polymer dispersions by free-radical aqueous emulsion polymerization of ethylenically unsaturated monomers in the presence of free-radical initiators, in which at least some of the monomers are employed in the form of an oil-in-water emulsion E1 whose disperse phase comprises at least one oil-soluble dye, wherein the disperse phase of E1 is formed essentially of dye-comprising monomer droplets having a diameter
摘要:
The present invention relates to a method for isolating cells from a complex sample comprising the steps of: a) providing a complex sample, b) incubating said sample with: at least one chaotrope, a buffer and at least one detergent, c) isolating said cells from the resulting mixture by centrifugation or filtration.
摘要:
The present invention relates to a genetically modified bacterium of the species Listeria monocytogenes, wherein the genomic locus of the transcriptional factor PrfA has been deleted, characterised in that it comprises on genomic level an artificial sequence that acts as internal amplification control, the use of this bacterium as well as a method for detecting and determining qualitatively and/or quantitatively the occurrence of wild type Listeria monocytogenes in a sample suspected to be contaminated with said micro-organism and a kit.
摘要:
SummaryThe present invention relates to a method for isolating cells from a complex sample comprising the steps of: a) providing a complex sample, b) incubating said sample with: at least one chaotrope, a buffer and at least one detergent, c) isolating said cells from the resulting mixture by centrifugation or filtration.