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941.
AUTHOR, N. &; AUTHOR, P. December 2017. Article title. Alcheringa 42, 301-305. ISSN 0311-5518. Dysagrionidae are common in Paleogene sedimentary rocks, but rarely recorded in the Mesozoic. This family, however, is diverse in Burmese amber. A new dysagrionid damselfly, Palaeodysagrion youlini Zheng, Chang &; Chang sp. nov., is described here based on a well-preserved specimen (holotype) in Burmese amber. The new damselfly provides wing apex and body characters for Palaeodysagrion. It differs from Palaeodysagrion cretacia in having Arc slightly distal of Ax2, the midfork slightly basal of the nodus, Cr and Sn almost perpendicular to RA and RP and in having a simple wing system. This is the fourth dysagrionid damselfly described from the Burmese amber.

Daran Zheng* [], State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 39 East Beijing Road, Nanjing 210,008, PR China; Su-Chin Chang []*, Department of Earth Sciences, The University of Hong Kong, Hong Kong Special Administrative Region, PR China; Bo Wang? [], State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 39 East Beijing Road, Nanjing 210,008, PR China. *Also affiliated with: Department of Earth Sciences, The University of Hong Kong, Hong Kong Special Administrative Region, PR China. ?Also affiliated with: Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100,101, PR China.  相似文献   
942.
通过 DEZ 对酸性纸进行脱酸应用的研究,考核了真空处理器的性能,筛选了处理工艺条件(真空度、温度、处理时间、DEZ 投放量及其关系等).确定了最佳的参数:真空度不低于13.33 Pa;温度控制在60C 左右;DEZ 投入量为需脱酸纸张重量的2%即可得到脱酸的效果。2m~3真空处理器的设计合理.适应 DEZ 气相脱酸的要求,容量大,一次能处理5000册杂志,除了能完成脱酸外,还能消毒、杀虫,具有多功能的特点。DEZ 对酸性纸脱酸有较宽的适应性,能对各种质地、成册的图书进行脱酸中和,pH 值均在中性偏碱范围,证实了 DEZ 气相脱酸的优越性能,为保护文化遗产,提供了一种新的手段和方法。  相似文献   
943.
After World War II, the Middle East stage attracted Beijing's attention. While Israel and China proved at that time to be too diverse, through the 1950s China made inroads with Arab countries. Egypt became the first to recognize the P.R.C., which, however, suffered rebuffs as anti-Communist forces generally prevailed in the Middle East. Beijing supported the people of Palestine. After the Soviet Union had become China's enemy, China tried to unite the Third World against the two superpowers. With Deng in 1978, China's Middle Eastern policy became more pragmatic, tilting toward the developed countries and economic cooperation rather than ideology (e.g., with Yemen). China enhanced relations with Gulf states; cooperated with the United States in supporting the Afghan mujahedin; and declared neutrality in the Iran-Iraq War, although economic alliance with Iran grew. The Gulf War affected Beijing's attitudes toward weapons technology and toward the United Nations and China's role in it. Israel is currently viewed as a channel for possible influence with the West. Overall, China's basic policy now is to watch and wait.  相似文献   
944.
江林泽 《当代中国史研究》2020,(2):50-62,157,158
工矿地区的群众始终是党和国家开展图书发行工作的重要对象。新中国成立之初,由于力量所限,工矿地区的图书发行工作主要采取流动供应方式;随着发行力量的不断增强,尤其是大规模经济建设对相关图书的迫切需求,在工矿地区发行图书的内容、数量和形式日益丰富,新华书店工矿门市部与书亭、工矿图书馆、义务发行员和流动供应图书相结合的发行方式逐渐成为主流。在党和国家的统一领导与管理下,以新华书店为代表的国营图书发行机构将内容多样、种类丰富的图书送到工人读者手中,在加强政治宣传、提升工业产量、推动技术进步和满足工人文化需求等方面发挥了重要作用。  相似文献   
945.
T. Chen  B. Wang  H. Mai  H. Jiang 《Archaeometry》2020,62(4):847-862
The gut contents of ancient humans have been proven to be the most direct evidence for palaeodietary study. In the Xinjiang region of north-west China, large numbers of mummies are well preserved owing to the extremely dry environment to be found there. Fourier-transform infrared spectroscopy (FTIR) combined with multi-archaeobotanical methods, including macrofossil examination, starch grain analysis, phytolith analysis and bran fragments analysis, were applied to investigate the possible gut contents (c.1300 bp by 14C dating) of a person unearthed at tomb 75TAM601 in Astana Cemetery, which were the public graveyards of the ancient Gaochang people (residents of Turpan, dating from about the third to the ninth centuries ce ), in Turpan, Xinjiang. The result of the FTIR analysis showed that the matrix of the possible gut contents consisted of protein and starch and was characterized as undigested food residue. The white mineral fragments of this sample were from the decomposition products of the skeleton. The microfossil analysis demonstrated that Setaria italica, Panicum miliaceum and Triticum aestivum were the main cereal resources for the last meals eaten by the deceased. Moreover, direct macrofossil evidence also advocates for the importance of the three aforementioned cereal crops and fruits of Cucumis melo and Vitis vinifera in the person's diet.  相似文献   
946.
This paper explores the possible provenance of ores employed for metallurgical production during the Early Bronze Age in the central Hexi Corridor of north-west China. In total, 78 pieces of copper (Cu) ore samples were collected from five Early Bronze Age sites and one Cu deposit site (the Beishantang Cu deposit) in the Heihe River region of the central corridor. These sites were dated to the late Machang (4100–4000 bp ), Xichengyi (4000–3700 bp ), Qijia (4000–3600 bp ) and Siba (3700–3400 bp ) cultures. After comparing with published lead (Pb) isotopic data from other possible Cu deposits in north-west China, the results show that the Cu ores collected from the Early Bronze Age sites were most likely derived from the adjacent Beishan Cu deposit. More intriguingly, for the first time in Hexi Corridor, a dozen Cu ores were discovered containing highly radiogenic Pb. Though fundamentally different from those in the Central Plains, they illustrate a possible new type of Cu used in Bronze Age western China, and the first-hand materials are significant for further understanding the provenance of raw metals for metallurgical production in the prehistoric Hexi Corridor.  相似文献   
947.
本文根据青莲教早期文献,推证该教流传的祖脉源流系谱及祖师是仙佛化身的说法,至迟在袁志谦时代已形成。结合祖脉系谱中三祖"普庵"的记载的特殊描述,进而追索该"祖脉源流"的由来,可能与江西人吴子祥或黄德辉有关。该"祖脉源流"除记载教中祖师外,亦传达"道落火宅"、"释终儒起"等观念。至于教中九祖"黄德辉",对照档案记载,就是黄廷臣。  相似文献   
948.
在我国史前时期曾存在着捐弃房屋的风俗.捐弃房屋的方式有烧毁、捣毁、废弃等几种方式.这种风俗存在的原因,主要应是与死者有关,是与安葬死者相关的一种仪式.它反映了远古先民的灵魂观念、禁忌习俗、尊卑观念和财产意识.  相似文献   
949.
太阳崇拜是中国古代宗教的一个重要组成部分.本文通过对考古资料中与太阳相关遗迹、遗物及各地岩画中太阳图像的类型及年代分析,结合文献资料,揭示了中国古代太阳崇拜的发展阶段性.  相似文献   
950.
论大汶口文化大口尊   总被引:1,自引:0,他引:1  
大汶口文化大口尊是随着社会发展的节拍而出现的时代性器物,与当时的生产力发展、意识形态的转变以及宗教活动都有着密切的联系,加上大口尊上的刻划符号,更是显示了这种特殊器物的深奥意义.大口尊不是普通生活用具,而是在当时的社会背景下新出现的一种特定器物.同时,大口尊上的刻划符号,表达的也是一种具有宗教内容的刻符.  相似文献   
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