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大戟属系大戟科植物,本属植物约有2000种,是被子植物中特大属之一,遍布世界各地,广泛分布于亚热带和温带地区,其中非洲和中南美洲较多,我国原产约66种,另有栽培和归化14种,计80种,南北均产,但以西南的横断山区和西北的干旱地区较多,大戟属植物的根和块根以药用而著名。金刚纂(Euphorbia antiquorum L.)为我国传统的傣药,归属于大戟科大戟属大戟亚属植物。本文一共分四个章节,第一章
Visual stimulus statistics are the fundamental parameters to provide reference for studying visual coding rules.The multi-electrode extracellular recording
摘要:文化革命以后,国家大力发展教育事业,提倡“知识救国”,新的知识分子大批涌现,学生的课业负担也日益繁重。文章基于初中体育课堂教学现状,主要分析了初中体育课堂教学的兴趣培养策略。 关键词:初中体育;课堂教学;兴趣;培养策略 在我国,很多地方初中阶段就要求学生上晚自习,加上家长们对孩子们“望子成龙、望女成凤”的高期盼,多数学生需要在周末上大量的补习班或是课外特长班,导致孩子们长期在课桌前埋头苦
The retinal neuronal network consists of parallel ON and OFF pathways,which are segregated to signal light increment and decrement,respectively.Dopamine (DA
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The functional maturation of visual cortex is sculpted by visual experience.To examine whether novel visual experience can trigger a new LTP (experience-ind
免疫治疗是一个古老而又日新月异的话题。基于肿瘤患者免疫功能不全特点,通过种种不同方式提高机体抗肿瘤免疫能力,清除残留肿瘤细胞,预防和减少复发,提高生存期是肿瘤免疫治
Recent efforts in large-scale sequencing of leukemia genomes have revealed numerous novel mutations that can potentially contribute to leukemeogenesis.The f