Abstract: An apparatus and method for production simulation simulates to calculate a total number of assembly boards manufactured with time by an electronic-component-mounting apparatus which includes a component feeding section having plural component feeders for feeding various components. The apparatus and the method allow a result of the simulation to be displayed. The production simulation apparatus is linked with a host computer for generating, transmitting, receiving, and storing data. When data for mounting components on a bare board is generated, production data for providing local maximum mounting efficiency is generated through carrying out an optimization process. The simulation for manufacturing the assembly boards is carried out using the production data and a production command data.

Abstract: To provide chromatographic packings whereby biological components, etc. which cannot be separated by either ion-exchange chromatography or reversed phase chromatography employed alone can be efficiently separated without deteriorating their activities. Use is made of a packing which contains a charged copolymer and makes it possible to change the effective charge density on the surface of a stationary phase by a physical stimulus while fixing a mobile phase to an aqueous system.

Abstract: Cells are cultured on a cell culture support having a substrate surface coated with a temperature-responsive polymer whose upper or lower critical solution temperature in water is 0˜80° C.

Abstract: Cells are cultured on a cell culture support having a substrate surface coated with a temperature-responsive polymer whose upper or lower critical solution temperature in water is 0˜80° C., and subsequently, (1) the temperature of the culture solution is brought to above the upper critical solution temperature or below the lower critical solution temperature, and optionally, (2) the cultured cell sheet is brought into close contact with a polymer membrane and (3) the cell sheet is peeled off together with the polymer membrane. In this way, the myocardial cell sheet can be cultured three-dimensionally to construct a myocardium-like tissue.

Abstract: By using a bed material for cell culture having a surface composed of two domains of domain A coated with a temperature-responsive polymer and domain B composed of any one or a combination of a domain coated with a polymer having high affinity with cells, a domain coated with the temperature-responsive polymer in an amount different from the amount of the temperature-responsive polymer of domain A, and a domain coated with a polymer which responds to a temperature different from the temperature to which domain A responds, a method for the co-culture of a plurality of kinds of cells which has heretofore been difficult becomes possible.

Abstract: An apparatus and method for production simulation simulates to calculate a total number of assembly boards manufactured with time by an electronic-component-mounting apparatus which includes a component feeding section having plural component feeders for feeding various components. The apparatus and the method allow a result of the simulation to be displayed. The production simulation apparatus is linked with a host computer for generating, transmitting, receiving, and storing data. When data for mounting components on a bare board is generated, production data for providing local maximum mounting efficiency is generated through carrying out an optimization process. The simulation for manufacturing the assembly boards is carried out using the production data and a production command data.

Abstract: PTH-amino acids can be analyzed within a short time at a high sensitivity by chromatographically separating said PTH-amino acids with the use of a packing wherein the hydrophilic/hydrophobic balance on the stationary phase surface can be changed by an external signal while fixing the mobile phase to an aqueous system.