源于马里共和国尼日河北部波利多哥地区的一种水平状的头饰西瓦拉(ciwara)包括好几种动物。如杂色羚羊、土豚、穿山甲,甚至可以是任何可以表现出特异体态的动物。这些头饰最令人感兴趣的还是工艺和美观的质感。所有水平的西瓦拉都是由...源于马里共和国尼日河北部波利多哥地区的一种水平状的头饰西瓦拉(ciwara)包括好几种动物。如杂色羚羊、土豚、穿山甲,甚至可以是任何可以表现出特异体态的动物。这些头饰最令人感兴趣的还是工艺和美观的质感。所有水平的西瓦拉都是由两部分组成,通常在羚羊颈部的左右两侧用铁钉或 U 型钉(图一)连接在一起。而这毫无疑问是从古至今流传下来,可以被称之为"原始"的技术,因为我们可以在所有同种类型的工艺品,甚至是迄今所知最古老的工艺品上看到同样的技术。展开更多
The airborne ragweed pollen spectrum was investigated in the air of Ankara, Turkey for aperiod of ten years (1990-1999) using a Burkard seven-day volumetric recording trap. In our study period,long distance transporte...The airborne ragweed pollen spectrum was investigated in the air of Ankara, Turkey for aperiod of ten years (1990-1999) using a Burkard seven-day volumetric recording trap. In our study period,long distance transported Ambrosia pollen has been registered. Daily pollen levels varied from low to highin Burge抯 system. In last three years, the pollen concentration of Ambrosia showed a clear increasingtendency. Our results prove that ragweed pollen may be an important threat for ragweed sensitive patientsin Ankara city in near future.展开更多
文摘源于马里共和国尼日河北部波利多哥地区的一种水平状的头饰西瓦拉(ciwara)包括好几种动物。如杂色羚羊、土豚、穿山甲,甚至可以是任何可以表现出特异体态的动物。这些头饰最令人感兴趣的还是工艺和美观的质感。所有水平的西瓦拉都是由两部分组成,通常在羚羊颈部的左右两侧用铁钉或 U 型钉(图一)连接在一起。而这毫无疑问是从古至今流传下来,可以被称之为"原始"的技术,因为我们可以在所有同种类型的工艺品,甚至是迄今所知最古老的工艺品上看到同样的技术。
基金Supported by the Research Foundation of Ankara University.
文摘The airborne ragweed pollen spectrum was investigated in the air of Ankara, Turkey for aperiod of ten years (1990-1999) using a Burkard seven-day volumetric recording trap. In our study period,long distance transported Ambrosia pollen has been registered. Daily pollen levels varied from low to highin Burge抯 system. In last three years, the pollen concentration of Ambrosia showed a clear increasingtendency. Our results prove that ragweed pollen may be an important threat for ragweed sensitive patientsin Ankara city in near future.
