Preliminary study on the living environment of hominids at the Donggutuo site, Nihewan Basin

The Donggutuo site, situated in the east margin of Nihewan basin, is one of the most important Paleolithic sites in China, characterized by the longest excavation seasons and the most abundant cultural remains recovered in the region. Based on well-constructed sporopollen, sediment grain size analysis, magnetic susceptibility, and iron oxide analysis of the 2000--2001 excavated section, four stages of environmental change in the Nihewan Beds are identified by the authors. The results indicate four major stages of environment and climate change from 1） warm and humid forest grass to 2） temperate and humid forest grass to 3） temperate and dry forest grass to 4） warm and humid forest, which is suitable for hominid occupation. The changes correspond to the stages of lake transgression and regression. The environment after the lake died out away has been cold and dry boschveld. The hominid activities at the site took place in the Early Pleistocene （1.10 Ma）, which corresponds to the early three environmental stages. Therefore, it can be inferred that the early hominids adapted to the relatively low lake level episodes through activities involving sporadic stone tool making, procuring of raw materials for tools, concentrating stone artifacts, and hunting and butchering. In conclusion, the results will be of great significance to research regarding the relationship between hominid occupation and environmental changes as well as the adaptive behaviors of early humans at the Donggutuo site.     

Analysis of the matrilineal genetic structure of population in the early Iron Age from Tarim Basin, Xinjiang, China

Ancient mtDNA data of human remains were analyzed from four early Iron Age Tarim Basin sites （Yuansha, Zaghunluq, Sampula and Niya） in the southern Silk Road region. Haplogroup distributions show that ancient Tarim Basin population was comprised of well-differentiated Western and Eastern matrilineal lineages. Some West lineage of Tarim Basin population originated from Near East and Iran region. Of the East lineages, North and Northeast Asia originated lineages were the main components, and a few Southeast Asian lineages also existed, which indicated a more extensive origin and a more complex admixture. The genetic structure of ancient Tarim Basin population is relatively close to the modern populations of Xinjiang, which implied that the early Iron Age is an important period during the formation of the modern Xinjiang population.     

高速公路沥青路面早期破坏的原因分析

本文从沥青面层、基层和材料选择、施工环节和养护管理等方面分别阐述了沥青路面早期破坏的各种原因,提出设计、施工、养护管理各部门共同努力、各尽其责,尽力避免沥青路面的早期破坏,延长路面的使用年限。     

浅谈对以文字为主题的招贴的视觉感受

文字既是语言信息的载体,又是具有视觉识别特征的符号系统;不仅表达概念,同时也通过诉之于视觉的方式传递情感。以文字为主的招贴是传达信息强有力的载体,然而,在当今招贴设计的某些设计作品中,文字的设计没有得到应有的重视,作品中忽视文字元素的设计,字型本身不具美感,同时文字编排紊乱,缺乏正确的视觉顺序,使招贴难以产生良好的视觉传达效果,也不利于人们接收招贴中所传达的重要信息。针对目前存在的问题,就“招贴中以文字为主的设计的视觉感受”展开论述。     

水泥混凝土路面早期裂缝原因分析

水泥混凝土路面早期裂缝对路面的破坏较大,根据工程实例,对水泥混凝土早期裂缝原因进行详细分析。     

浅析水泥混凝土路面早期断板原因及防治

文章结合笔者参加检查验收的几条滑模施工和小型机具施工的混凝土路面发现有早期开裂断板,分析其成因并提出防治对策。     

最易忽视的15个癌症早期症状

癌症让许多人觉得恐怖,但并非完全不能从它的魔爪下逃离。美国“网络医学博士”网站近日刊出美国癌症协会专家总结出的“男人和女人最容易忽视的15个癌症症状”,提醒大家要抓住癌症的蛛丝马迹。因为有调查显示,与较晚期病人治疗后的5年生存率只有10％-30％相比,早期癌症病人正规治疗后的5年生存率能高达70％-95％。     

汉阳陵外藏坑农作物遗存分析及西汉早期农业

利用植硅体分析与炭化植物种子形态分析, 对汉阳陵外藏坑DK15出土的距今2000多年前的农作物遗存进行了分析鉴定. 分析结果表明, 此外藏坑粮仓中的农作物包含了粟(Setaria italica)、黍(Panicum miliaceum)、稻(Oryza saliva)以及藜属(初步鉴定为杖藜Chenopodium giganteum)的大量种子. 这些农作物反映了当时西汉早中期陕西关中地区主要的农作物(谷物与蔬菜). 以前从考古遗址中获得的藜属种子都是零星的, 归为伴人杂草. 此次汉阳陵出土的大量藜属种子, 是考古中的首次发现, 也第一次用实物资料证明了藜属作为经济作物的悠久历史. 由于西汉从汉武帝时才开始在关中大力推广小麦种植, 所以外藏坑中缺少小麦遗存有可能至少反映了汉景帝离世(141 cal a BC)前, 小麦在关中地区民众日常生活与农业经济中的从属地位.     

沥青路面结构设计是预防早期病害的关键

沥青砼路面具有良好的力学性能,在高速公路中广泛得到应用,但是早期出现痛害也较为严重,文章结合实际主要从路面设计方面进行分析论述.     

城市道路沥青混凝土路面早期病害原因及防治

通过对晋城市近几来施工完成的沥青路面出现的早期病害进行分析,介绍病害发生的原因及预防措施。