Abstract: The present invention relates to a hair growth inhibitor and a depilation accelerator, each comprising a crude drug selected from Bupleuri Radix, Perillae Herba, Rhel Rhizoma and Akebiae Caulis, or an extract thereof. This inhibitor or accelerator makes it possible to inhibit the growth of body hair or promote depilation, respectively, thereby reducing the frequency of hair removal treatment. Moreover, it makes the hair body finer, thereby facilitating the removal of the hair from feet or arms.

Abstract: A method for estimating a direction of arrival of a signal transmitted by a signal source and received by an antenna array. The method estimates the covariance matrix of the signals received by the antennas of the array and derives therefrom a direction of arrival. The received signals are correlated with a reference signal transmitted by the source prior to being submitted to the covariance matrix estimation.

Abstract: The present invention provides a semiconductor device which is excellent in voltage sense characteristic and simple in manufacturing process. P diffusion regions 12 and 13 are selectively formed on a first major surface of an N.sup.- substrate 11, an electrode 31 is formed on the P diffusion region, a sense electrode 32 is formed on the P diffusion region 13, and an electrode 33 is formed on a second major surface of the N.sup.- substrate. Then, the electrode 31 is set at 0 V, constant current is led to the sense electrode 32, and the electrode 33 is positively biased. Thus, the voltage applied to the electrode 33 is sensed from a potential obtained at the sense electrode 32. A distance between the P diffusion regions 12 and 13 which determines a voltage sense characteristic can be accurately controlled, and a good voltage sense characteristic can be obtained. Moreover, a manufacturing process is relatively simple.