A hairy-bodied tettigarctid (Hemiptera: Cicadoidea) from the latest Middle Jurassic of northeast China

Liu, X.H., Li, Y., Yao, Y.Z. & Ren, D., April 2016. A hairy-bodied tettigarctid (Hemiptera: Cicadoidea) from the latest Middle Jurassic of northeast China. Alcheringa 40, xxx–xxx. ISSN 0311-5518

Extant tettigarctids are also known as hairy cicadas because they are covered by long and abundant hairs. This character had not been reported in fossil species of Tettigarctidae because previous examples were poorly preserved or lacked long hairs. Hirtaprosbole erromera gen. et sp. nov. (Tettigarctidae) with a hairy body, from the latest Middle Jurassic Jiulongshan Formation of Daohugou, Inner Mongolia, China, is described here. This new species provides evidence that tettigarctids with long dense hairs had appeared by the latest Middle Jurassic and lived at high altitudes.

Xiao-hui Liu [liuxh8917@163.com], Yi Li [liy0124@sina.com], Yun-zhi Yao*[Corresponding author: yaoyz100@gmail.com] and Dong Ren [rendong@mail.cnu.edu.cn], College of Life Sciences, Capital Normal University, Xisanhuanbeilu 105 Haidian District, Beijing, PR China 100048.     

Guanhua,Guoyu, and Putonghua: Politics and “proper names” for standard language in modern China

ABSTRACT

Guanhua (official language), Guoyu (national language), and Putonghua (common language) are generally regarded as different names for the same thing in different eras, but from the perspective of cultural history, there are many subtle semantic differences between these three concepts, symbolizing how different social classes and political groups defined their particular experiences, expectations, and efforts to take action. Guoyu, which replaced Guanhua in the late Qing Dynasty, is closely bound up with the construction of modern nationalism. In the 1930s, leftist intellectuals imbued Putonghua with strong proletariat attributes and overtones of indigenous and ethnic equality, wielding it as a tool for critiques against Guoyu. Although Putonghua returned to certain key positions of Guoyu after the mid-1950s, it putatively emphasized the legacy of the leftist language movement, and represented a new political identity. Through these “proper names” for the standard language, it was possible not only to launch a political and social “revolution,” but also to smooth over the historical rifts that this engendered, by repeatedly revising the concepts of “written” and “standard” to form a linear national narrative.     

松烟和油烟的表面化学性质研究

作为制墨发展史中绝对主流的两种墨品松烟墨和油烟墨,其使用性能的差异往往和它们的物理结构和化学性质直接相关。因此有必要对制墨原料的物理和化学性质进行准确测定。为此,对其原料松烟和油烟的主要组成、颗粒结构和分散状态进行研究的基础上,联合采用Zeta电势测定、X射线光电子能谱(XPS)、程序升温脱附与质谱联用(TPD-MS)、热重(TG)和傅里叶变换红外(FTIR)等不同表征方法,对两种烟料的表面化学性质进行了定性、定量分析。结果表明,松烟和油烟不仅在颗粒尺寸、石墨化程度、比表面等方面有所不同;更重要的是它们在表面电荷、表面基团的种类、分布、相对含量等方面也存在较大的差异。并进一步从黑度、色度、光泽、渗透、层次和稳定性等方面,讨论了松烟和油烟的物理和化学特性与用墨性能之间的关系。希望可以更好地明确制墨原料的物理化学性质,并进一步与制墨工艺、墨的品质相关联,从而指导制墨工艺的改进提高。研究结果可为制墨工艺、墨的使用、鉴别和保存提供科学的依据。     

Micro-CT investigation of ostrich eggshell beads collected from Locality 12, the Shuidonggou site,China

Ostrich eggshell (OES) beads are an important kind of human ornaments, because their production reflects the development of modern human behavior, thinking ability, and cognitive level. Although the manufacture procedure of OES beads has been reconstructed in some Later Stone Age sites and early Neolithic sites, little information is known about detailed drilling technologies. In this study, synchrotron radiation micro-CT (SR-μCT) was firstly used to scan OES beads to understand microstructure, drilling marks, and perforation shape in a non-destructive mode. In contrast to other method to research drilling technologies, SR-μCT has a unique advantage that it could eliminate the influence of the adhering soils in a perforation in case that they are not easily removed. The results indicate that (1) SR-μCT could differentiate the eggshell species between Struthio camelus and Struthio anderssoni in terms of pore distribution. Compared to other destructive methods, including the anatomical method, DNA and protein analysis, the species identification through SR-μCT is non-destructive and faster; (2) the outer and inner surface of OES could be non-destructively judged according to OES microstructure, which would help infer the drilling direction; and (3) the perforation shape and drilling marks are distinct between the discontinuous twisting drilling and the multi-rotary drilling methods on the basis of replication experiments. According to these criteria, SR-μCT was applied to examine OES beads found in Locality 12 of the Shuidonggou (SDG) site in China, which were probably discarded in 1.1 k yr BP. The results show that most of ancient beads were firstly drilled from inside. According to the perforation shape and drilling marks, both the twisting drilling and the multi-rotary drilling method with different kinds of drill bits were used in working beads. Therefore, the people in SDG site mastered a few drilling technologies in the early Holocene, and the use of the multi-rotary drilling method reflects the technical development of ancient people. Up to our knowledge, it is the earliest known evidence of the application of the multi-rotary drilling method in China. Furthermore, this study will provide a new approach and important reference to understand drilling technologies of much older OES beads in the Later Stone Age or Upper Paleolithic Age.     

Phytolith analysis for the identification of barnyard millet (<Emphasis Type="Italic">Echinochloa</Emphasis> sp.) and its implications

Echinochloa was an important prehistoric food crop of early agriculture in Asia. Macro-remains can be used to identify Echinochloa. However, when few macro-remains are available, phytolith analysis can be performed. In this study, we examined the phytolith morphology of the glumes, lemmas, and paleas from the inflorescence bracts of nine Echinochloa species from different regions of China and obtained diagnostic, morphological, and morphometric characteristics for Echinochloa. Phytoliths in Echinochloa are different from those in most known crops except those in Setaria italica and Panicum miliaceum. We found the following two diagnostic features within an epidermal silica layer that can be used to distinguish Echinochloa sp. from S. italica and P. miliaceum: (1) the β-type undulated patterns with constricted top of the undulation amplitude and (2) the discriminant functions based on the morphometric data of the β-type undulated patterns, which suggested that 94.9 % of the cross-validated data were correctly classified into Echinochloa, S. italica, and P. miliaceum. Thus, we established the phytolith identification criteria for Echinochloa; this could have important implications in plant taxonomy, archaeobotany, and plant domestication.     

A new dysagrionid damselfly (Odonata: Zygoptera: Palaeodysagrion) from mid-Cretaceous Burmese amber

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* [dranzheng@gmail.com], 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 [suchin@hku.hk]*, Department of Earth Sciences, The University of Hong Kong, Hong Kong Special Administrative Region, PR China; Bo Wang? [bowang@nigpas.ac.cn], 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.     

纸张DEZ气相脱酸应用研究

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。