There were so many common thoughts in Yeats’s poetry and Lao tzu’s philosophy on the Feminine Principl.” Both Yeats and Lao tzu lived in turbulent times. They thought the cause of anarchy in their world resulted from the True God’s absence as the Feminine Principle. Thus they were eager to support it as the Primary principle in the world. Yeats was a gnostic visionary. He believed in God’s androgynous Trinity; Man, woman and child. A Child is a daughter or a son. Yeats refused to accept the masculine Trinity. Yeats searched for the hidden Goddess who is called Sophia or Binah as the dark Mother in the Cabalah. Binah is identified with Saturn(male). So Sophia is androgynous. Yeats called Sophia by many names. Those included Rose, Countess Cathleen, Nimah, Helen and Jane as the symbol of immortal Beauty. All of his poetry owes much to a symbolism derived from the Rosicrucianism, Cabalism, Christian Gnosticism and Orientalism. Orientalism included the Taoism of Lao tzu. I read that Yeats was deeply impressed by the Chinese book, The Secret of the Golden Flower, which is explained Taoism. Because Taoism is s common with Yeats’s main poetic theme, which is the Feminine Principle and the hidden God. Although Lao tzu lived about 2,500 years ago, he had almost the same idea as Yeats. His main theme is Tao, the way which symbolizes the Feminine Principle, like Sophia in Christian Gnosticism and Cabalism. We can say Tao is intangible and permanent, governing the impermanent became it symbolizes the Mother of all beings. Tao especially symbolizes darkness. Thus I can say that “dark Sophia” in Yeats’s poetry is identical to Tao. Lao-tzu described that Tao stands for the feminine archetypal imagery such as water, darkness, valley, cave, abyss. Especially Lao tzu’s heavenly Virtue, Tao is called “Hyeon-bin” which means a black female. Thus Tao is identified with the dark Mother, Sophia in Yeats’s poetry. Also Lao tuz eulogized the virtue of Tao as water. For example, Lao tzu explained that “water’s virtue is the highest goodness.” This symbol of water symbolizes the Feminine Principle like Sophia’s characteristics in Yeats’s poetry. Thus, they all refused to accept the andro-centric society.

Two kinds of Bi2Te3 powders, pure Bi2Te3/2vol.%ZrO2, have been prepared by a mechanical grinding process process. Effect of mixing of the powders on thermoelectric of the sintered body has been investigated by measuring Seebeck Coeffcient, specific electric resistivity and thermal conductivity. With an increase in the weight fraction of the Bi2Te3/2vol.%ZrO2 powder from 0 to 40wt.%. Especially, the figure of merit of the mixedBi2Te3 sintered body increases and thereafter dedreases above 40wt.%. Especially. the figure of merit of the mixed Bi2Te3 sintered bodies with mixing of Bi2Te3/2vol.%ZrO2 powder increased about 1.3time in comparison with the value of the specimen before mixing. Mixing of two kinds of Bi2Te3 powders which have different theramal and electric propertries with each other seemed to be useful methob to increase the figure of merit of Bi2Te3 sintered body.

Fe-Se-Te계(FeSe(sub)1-xTe(sub)x, x=0.2, 0.5, 0.8)의 특성을 X-선 회절법 및 Mossbauer 분광법에 의해 조사하였다. 결정구조는 세 시료 모두 주된 tetragonal PbO 구조와 hexagonal NiAs 구조가 일부 혼합된 형태를 보였으며 x=0.5의 경우 tetragonal 구조의 격자상수 값은 a=3.795Å, c=5.896Å 이며 c/a=1.55로 나타났다. 다양한 온도변화에 의해 측정된 Mossbauer 스펙트럼은 전체 시료 모두 초미세 자기구조를 갖지 않는 강한 이중선(doublet)이 관측되었다. 조성 및 온도변화에 대해 뚜렷한 선형(line shape)의 변화는 관측되지 않았으나 결합상태에 약간의 변화를 보였다. 이성질체 이동(isomer shift)값과 사중극자 분열(quadrupole splitting)값 및 온도의존성을 분석한 결과 Fe는 low spin이 +2가 상태로 존재하며 강한 공유 결합상태임을 알 수 있었다. x=0.8의 경우 이성질체 이동값의 온도변화는 제2차 도플러 효과(second order Doppler effect)의 영향인 것으로 나타났다.

기계적 합금화 공정과 가압소결법으로 (Pb1-xSnx)Te(0≤x≤0.4)합금을 제조하여 SnTe 함량에 따른 열전특성을 분석하였다. PbTe와 (Pb0.9Sn0.1)Te 가압소결체는 각기 200˚C와 300˚C에서 p형에서 n형으로 천이되었으나, SnTe를 0.2몰 이상 함유한 가압소결체는 450˚C까지의 온도범위에서 p형 전도를 나타내었다. Extrinsic 전도영역에서 SnTe 함량이 증가함에 따라 (Pb1-xSnx)Te 가압소결체의 Seebeck 계수와 전기비저항이 감소하였다. SnTe 함량이 증가함에 따라 (Pb1-xSnx)Te 가압소결체의 최대성능지수를 나타내는 온도가 고온으로 이동하였으며, (Pb0.7Sn0.3)Te 가압소결체는 200˚C에서 0.68×10-3/K의 최대성능지수를 나타내었다.