Abstract: A method of determining a cell cycle stage distribution of cells includes the steps of providing a cell sample; pre-treating the cell sample with a solvent; mixing the pre-treated cell sample with a matrix solution to obtain a mixture solution; depositing the mixture solution on a sample plate; obtaining a mass spectrum analysis of the deposited mixture solution; and identifying at least two marker peaks from the mass spectrum analysis, wherein a ratio between the marker peaks provides information about a cell cycle stage distribution of the cell sample, wherein the mass spectrum analysis is a matrix-assisted laser desorption/ionization time-of-flight mass spectrum test.

Abstract: A method of determining a cell cycle stage distribution of cells includes the steps of providing a cell sample; pre-treating the cell sample with a solvent; mixing the pre-treated cell sample with a matrix solution to obtain a mixture solution; depositing the mixture solution on a sample plate; obtaining a mass spectrum analysis of the deposited mixture solution; and identifying at least two marker peaks from the mass spectrum analysis, wherein a ratio between the marker peaks provides information about a cell cycle stage distribution of the cell sample, wherein the mass spectrum analysis is a matrix-assisted laser desorption/ ionization time-of-flight mass spectrum test.

Abstract: A process for the low-wear micromachining of workpieces made from metal or metal alloys, in particular steel, in which a workpiece (1) is micromachined using at least one machining apparatus (5) that has a diamond tool (6), in particular an ultraprecision turning, milling or grinding machine, and prior to the micromachining the workpiece (1), in a first step, is subjected to a thermochemical surface zone treatment, and that in a second step the thermochemically treated surface zone (2) of the workpiece (1) is machined using the machining apparatus (5).

Abstract: A process for the low-wear micromachining of workpieces made from metal or metal alloys, in particular steel, in which a workpiece (1) is micromachined using at least one machining apparatus (5) that has a diamond tool (6), in particular an ultraprecision turning, milling or grinding machine, and prior to the micromachining the workpiece (1), in a first step, is subjected to a thermochemical surface zone treatment, and that in a second step the thermochemically treated surface zone (2) of the workpiece (1) is machined using the machining apparatus (5).