在秘鲁首都利马以东约350公里处的阿科班巴区周围气候恶劣的秘鲁高原上,1995年夏秋,正在开展着一些不寻常的活动,尽管日常工作和生活的进程未受到太大的影响。活动的中心是4所学校,尤其是小学300名6—11岁的小学生,他们正在接受用稳定同位素进行的营养评价。 In the summer and autumn of 1995, some unusual activities were being carried out in the abominable Peruvian plateau around Arbatuba, about 350 kilometers east of the Peruvian capital, Lima, although the progress of daily work and life was not significantly affected . At the center of the activity are four schools, in particular 300 primary school children aged 6-11, who are receiving nutritional assessments using stable isotopes.