Abstract: The present invention relates to transdermal preparation that can contain high concentration of hydrophilic or salt form drug in adhesive, shows increased skin permeation of drug, and allows improved drug stability within the adhesive layer.

Abstract: The present invention relates to a process for preparing pre-expanded articles of a polyolefin resin wherein a blowing agent is incorporated into the polyolefin resin in an amount of 45 to 90 parts by volume with respect to 100 parts by volume of the resin and the pre-expansion is carried out at a temperature in the range of from Tm -35.degree. C. to Tm -20.degree. C., or a second external pressured gas which facilitate the impregnation efficiency of the blowing agent is further introduced in an amount of expressing an additional pressure more than 10 kg/cm.sup.2 with the blowing agent. Also, the present invention relates to pre-expanded articles of a polyolefin resin produced by the above process.

Abstract: A trunk interface for an ISDN system which uses two different carriers of CEPT and T1. The trunk interface is for use in an apparatus in order to interface with a central office exchange or the other PABX. The trunk interface includes a DIP switch, a primary rate transceiver and a frame aligner in order to support the CEPT and T1. carriers. The trunk interface communicates with the high order level of the system through a serial port of a D channel controller, so that a microprocessor without a special communication module can be utilized in the trunk interface.