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The International Earth Science Olympiad(IESO):A way to raise public awareness of geoscience,particularly amongst younger people and enhance the quality of geoscience education internationally
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作者 Roberto Greco Sylke Hlawatsch Nicholls Bronte 《Episodes》 2013年第3期235-239,共5页
Since 1959 when the first International Math Olympiad for school students was held,other scientific Olympiads have developed,last but not least,the International Earth Science Olympiad-(IESO)in 2007.This article summa... Since 1959 when the first International Math Olympiad for school students was held,other scientific Olympiads have developed,last but not least,the International Earth Science Olympiad-(IESO)in 2007.This article summarizes the organisation of this event that to date has involved 39 countries and aims to involve more in the future.IESO is a competition for school students where the best students from all over the world test their knowledge and abilities in the subject.It is an amazing opportunity for brilliant students,with an interest in Earth science to get to know each other,share their passion and grow an international network.It highlights the importance of increasing the range of countries that participate in this competition and the role national selection processes can play to focus the attention of National Ministries of Education to give the appropriate time and space for Earth science in the school curricula.This in turn can lead to more school students continuing with post-school studies in the Earth sciences and take up careers in this field,following their passion for Earth science and thus contributing to their countries growth. 展开更多
关键词 School Curricula scientific olympiads National Selection Processes Career Development International Earth Science Olympiad Public Awareness earth science olympiad ieso Geoscience Education
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9^(th)International Earth Science Olympiad(IESO)
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作者 Roberto Greco Carolina Baldin Luiz Anselmo Costa Nascimento Ifanger 《Episodes》 2016年第1期74-76,共3页
13-20,September 2015,Poços de Caldas,Brazil The 9th edition of International Earth Science Olympiad(IESO)that involved the brilliant high school students from all over the world was held this year in Poços d... 13-20,September 2015,Poços de Caldas,Brazil The 9th edition of International Earth Science Olympiad(IESO)that involved the brilliant high school students from all over the world was held this year in Poços de Caldas,Brazil.As in all the competitions there is a winner,but in this Olympiad there is space even for cooperation and to enhance friendly relation between participants in order to grow up a network of a future generation of connected geoscientist. 展开更多
关键词 international earth science olympiad ieso Brazil enhance friendly relation International Earth Science Olympiad Po os de Caldas Cooperation high school students grow up network
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柔性环氧丙烯酸酯的合成及UV固化性能 被引量:4
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作者 高景瑞 谢晖 黄莉 《南京工业大学学报(自然科学版)》 CAS 北大核心 2022年第1期45-50,67,共7页
为提高环氧丙烯酸酯的柔韧性,选用衣康酸(IA)和甲基丙烯酸羟乙酯(HEMA)反应生成含有羧基的单酯基,然后分别与环氧大豆油和环氧树脂进行环氧开环反应。当反应温度为110℃,反应时间为2 h,环氧基与羧基的摩尔比为1.15∶1,催化剂三苯基膦(T... 为提高环氧丙烯酸酯的柔韧性,选用衣康酸(IA)和甲基丙烯酸羟乙酯(HEMA)反应生成含有羧基的单酯基,然后分别与环氧大豆油和环氧树脂进行环氧开环反应。当反应温度为110℃,反应时间为2 h,环氧基与羧基的摩尔比为1.15∶1,催化剂三苯基膦(TPP)的质量分数为1.5%,阻聚剂对羟基苯甲醚(MEHQ)的质量分数为0.2%时,合成产物性能最佳。并采用核磁共振氢谱仪(^(1)H NMR)、傅里叶红外光谱仪(FTIR)对产物结构进行表征,表明成功制备出环氧大豆油衣康酸甲基丙烯酸羟乙酯(IESO)。实验合成产物(柔性环氧丙烯酸酯)与IESO、纯环氧大豆油丙烯酸酯(AESO)相比,铅笔硬度更大、柔韧性更佳,而吸水率降低,热稳定性能也有较大提高。 展开更多
关键词 衣康酸 甲基丙烯酸羟乙酯 ieso AESO 紫外光(UV)固化 柔韧性 环氧丙烯酸酯
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