An organic field-effect transistor was fabricated using an anthracene−tetracyanoquinodimethane (AN− TCNQ) single-crystal charge-transfer (CT) complex as the semiconductor material. The CT complex showed molecular dynamics related to reorientational motion of an AN molecule at room temperature. The transfer characteristics drastically changed when the temperature decreased from room temperature to 90 K: n-type → ambipolar-type → p-type → ambipolar-type. From thermal analysis, AN−TCNQ underwent two phase transitions when the temperature decreased from room temperature to 120 K. To clarify the mechanism of the drastic changes of the transfer characteristics, the crystal and electronic structures of AN−TCNQ at various temperatures were investigated by X-ray structure analysis, optical measurements, and magnetic measurements. It was found that the drastic changes of the transfer characteristics originated from changes in the electronic structure accompanied by the molecular dynamics.

Summary:A 39-year-old woman, with a 23-year history of medically intractable seizures of the complex partial type, underwent a left anterior temporal lobectomy and hippocampectomy. Histologic examinations revealed a massive occurrence of corpora amylacea, neuronal loss, and gliosis in the pyramidal cell layer of the hippocampus. The distribution of corpora amylacea in this case was quite distinctive and unlike the patterns of "nonspecific" corpora amylacea formation seen in aging or other neurodegenerative conditions. The pathogenetic aspects of the accumulation of these peculiar bodies are discussed in relation to hippocampal sclerosis.

The possibility of neuroendoscopic third ventriculostomy as a treatment for these pathologies is discussed.

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For active vibration control of buildings in Japan. new system altcrnative to current active mass dampers arc required. Smart structures are candidates for the alternative systems. In order to investigate the possibility, a smart structure was tested for active vibration control of frame structures. in which bending moment of the columns was controlled by magnetostrictive actuators integrated into the columns. The actuators were installed in stages in the bottom part of the column of a H-section. The stages had a different section for effective integration of the actuators into the column, while they had the same bending stiffnesses of the column in the two lateral directions. Excitation tests were carried out for a 3-story building model of a 3.4 m height and a 1600 kg total mass by using a shaking table. In the building model, each column had 2 stages in its bottom part in the first story, and 4 actuators were installed in each stage of one column. i'hus 32 actuators in total were used. The magnetostrictive actuator developed for the building model consisted of a magnetostrictive rod of a 40 mm length and a 20 mm diameter surrounded h a driving coil. The controllers for the building model were designed by the model-matching method and the H control theory to control the 1st-, 2nd-. and 3rd-mode responses, and both controllers were designed so that the system had a 1 r damping ratio in all modes. Through the tests, it was shown that the smart structure could effectively reduce the responses of the building model, and the two control strategies had almost the same performance.