Abstract: A load calculation control method and apparatus for load characteristic tests of electric generator is provided, which enables continuous and precise following of a load control value. In this apparatus, a resistor bank ?, which is to be connected to a load apparatus provided with a power supply apparatus (G), a ground relay (GR), a voltmeter (V), an electric power meter (P), an ampere meter (A), and main circuit breakers (CB, CBH), is divided into two or more (2-N). A switch (CL/CH) and a controller (CV) are connected to each resistor bank (?1-?N). and a power capacity obtained by dividing, maximum power capacity of resistor bank groups (?L, ?H) by two through (2n-1). The controller (CV) includes a control value storing circuit (MC) and a comparing/transmitting circuit (OC) that compares the power capacity value of the resistor banks (?1-?N) with the load control value and that transmits ON/OFF signals to the switches (CL, CH) connected to the resistor banks (?1-?N).

Abstract: A load calculation control method and apparatus for load characteristic tests of electric generator and the like is provided, which enables continuous and precise following of a load control value and maintaining the value without using industrial water. In this apparatus, a resistor bank ?, which is to be connected to a load apparatus provided with a power supply apparatus (G), a ground relay (GR), a voltmeter (V), an electric power meter (P), an ampere meter (A), and main circuit breakers (CB, CBH), is divided into two or more (2-N). A switch (CL/CH) and a controller (CV) are connected to each resistor bank (?1-?N). each of which is assigned and maintained at a power capacity obtained by dividing, based on binary number, the maximum power capacity of resistor bank groups (?L, ?H) by two through (2n?1).

Abstract: This invention concerns a production process of an antithrombogenic and antiadhesive material which can favorably be used as artificial blood vessels, artificial valves, grafting patches for cardiovascular organs, artificial heart catheters and so on. The gist of this invention is constructed substantially of subjecting glycidyltrialkylammonium halide such as glycidyltrimethylammonium chloride to the reaction with a material comprising pure collagen or collagen and other components like mucopolysaccharide in order to introduce a cationic quaternary functional group in collagen molecules of the material and then subjecting heparin to the ionic combination with the cationic functional group introduced.