Abstract: In a consumables supply management system in which clinical test analysis devices (1) in medical institutions (A, B, . . . ) and a computer (2) of a consumables supplier (C) are connected via a communications line (10), operation status data including information on the status of consumption of the consumables in the clinical test analysis device (1) are transmitted to the computer (2) via the communications line (10). The computer (2) has previously stored data on the inventory of consumables in each medical institution, and determines the quantity of consumables consumed in each medical institution based on the operation status data that are received, updates the consumables inventory data, and if necessary, carries out the procedures for supplying an appropriate quantity of consumables.

Abstract: A transformer core having a high inductance, small inductance tolerance, and small harmonic distortion, in particular total harmonic distortion (THD), wherein a surface roughness of a gap forming surface (RaG) forming a gap for adjustment of the inductance is not more than 0.70 ?m, preferably not more than 0.45 ?m, a transformer using the same, and a method of production of a transformer core having the above properties polishing the gap forming surface forming the gap by a grinding wheel having polishing abrasives of a particle size of #400 to #8000, preferably #600 to #8000 (JIS-R6001).

Abstract: A mediating system in which a system mediates a transaction between a buyer and a seller, and in which a system usage charge collected from vendors that have joined the system as sellers is determined based on an evaluation of each vendor, making it possible to increase the eagerness of each trader and induce motivation. A server of the provider A of the mediating system makes an overall evaluation of each vendor (user C) based on, for example, the time to reply to a request for quote from a user B who is a buyer, the negotiation attitude, the reasonableness of the price, the delivery time, product quality, and business situation, etc., and determines the usage charge according to the evaluation.

Abstract: In a consumables supply management system in which clinical test analysis devices (1) in medical institutions (A, B, . . . ) and a computer (2) of a consumables supplier (C) are connected via a communications line (10), operation status data including information on the status of consumption of the consumables in the clinical test analysis device (1) are transmitted to the computer (2) via the communications line (10). The computer (2) has previously stored data on the inventory of consumables in each medical institution, and determines the quantity of consumables consumed in each medical institution based on the operation status data that are received, updates the consumables inventory data, and if necessary, carries out the procedures for supplying an appropriate quantity of consumables.