The present invention provides a high frequency amplifier suitable for use in a wireless communication system which performs detection of an output level necessary for feedback control by a current detection system, wherein control sensitivity in an area low in transmit request level is lowered so that an output level can be controlled over the whole control range with satisfactory accuracy. This discovery is of particular value in the production of polyalkyleneamines via nitration of a polyalkene, such as a polybutene, and its subsequent reduction. A face positioned at the front portion of the body and is configured to receive an impact. The enrollment information is checked and verified, and the enrollment application is checked for eligibility. Because the salt has already been applied to the plaintext data, it does not need to be reapplied during the encryption phase as is typically done in encryption. If the required conditions or criteria are not satisfied, the processor modifies the generated set of seeds until the required conditions or criteria are satisfied.