| 上海浦东东滩与九段沙生态环境的比较 |
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| 引用本文： | 李道季,陈吉余.上海浦东东滩与九段沙生态环境的比较[J].长江流域资源与环境,1997,6(3):283-287. |
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| 作者姓名： | 李道季 陈吉余 |
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| 作者单位： | 华东师范大学河口海岸研究所 |
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| 摘 要： | 上海浦东国际机场建设占用了部分的滩涂，此部分滩涂是鸟类栖息迁徒的活动区域之一。研究和比较了长江口浦东东滩和相邻九段沙的生态环境特点，评述了九段沙作为鸟类栖息迁徒重要“驿站”可能性的重要依据，并提出了相应的建议。
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| 关 键 词： | 上海浦东 国际机场 九段沙 生态环境 |
SYNTHESIS AND STUDY OF THE CHIRAL FERROELETRIC LIQUID CRYSTALS WITH LARGE SPONTANEOUS POLARIZATION |
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| Xi Guangen,Xiao Fanhua,Zhao Min,Sun Jie.SYNTHESIS AND STUDY OF THE CHIRAL FERROELETRIC LIQUID CRYSTALS WITH LARGE SPONTANEOUS POLARIZATION[J].Resources and Environment in the Yangtza Basin,1997,6(3):283-287. |
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| Authors: | Xi Guangen Xiao Fanhua Zhao Min Sun Jie |
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| Abstract: | Two chiral liquid crystals of one series:(d)3M2CPNOB and (d)3M2CPHpOB were synthesized The phase transition temperature, the liquid crystal states, the hysteresis loop and the spontaneous polarization of (d)3M2CPNOB were determined It was proved that (d) 3M2CPNOB is ferroeletric liquid crystal with large spontaneous polarization |
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| Keywords: | organic synthesis ferroelectric liquid crystal spontaneous polarization |
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