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First occurrence of preiswerkite in the Dabie UHP metamorphic belt

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Chinese Science Bulletin 2000年第8期45卷 748-750页

作者： WANG Rucheng xu Shijin xu shutong Stael Key Laboratory of Mineral Deposit Research and Department of Earth Sciences Nanjing UniversityNanjing 210093China Anhui Institute of Geology Hefei 230001China

This note reports the preiswerkite that was found as the first occurrence in the UHP metamorphic belt of the Dabie Mountain. It occurs in the quartz jadeitite, and coexists with plagioclase, taramite and magnetite as retrograde symplectite. The calculated temperature of formation for preiswerkite is about 600 -620 ℃ (at P=1.0 -1.5GPa), suggesting that the preiswerkite is an indicator mineral of high-grade greenschist facies retrograded from eclogite-facies rocks.

关键词： preiswerkite chemistry quartz-jadeitite Dabie UHP terrain.

A HEVC Video Steganalysis Algorithm Based on PU Partition Modes

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Computers, Materials & Continua 2019年第5期59卷 563-574页

作者： Zhonghao Li Laijing Meng shutong xu Zhaohong Li Yunqing Shi Yuanchang Liang School of Electronic and Information Engineering Beijing JiaoTong UniversityBeijing100044China Guangdong Provincial Key Laboratory of Information Security Technology Guangzhou510000China Department of Electrical and Computer Engineering New Jersey Institute of TechnologyNewark07102USA

Steganalysis is a technique used for detecting the existence of secret information embedded into cover media such as images and ***,with the higher speed of the Internet,videos have become a kind of main methods for transferring *** latest video coding standard High Efficiency Video Coding(HEVC)shows better coding performance compared with the H.264/AVC standard published in the previous ***,since the HEVC was published,HEVC videos have been widely used as carriers of hidden *** this paper,a steganalysis algorithm is proposed to detect the latest HEVC video steganography method which is based on the modification of Prediction Units(PU)partition *** detect the embedded data,All the PU partition modes are extracted from P pictures,and the probability of each PU partition mode in cover videos and stego videos is adopted as the classification ***,feature optimization is applied,that the 25-dimensional steganalysis feature has been reduced to the 3-dimensional *** the Support Vector Machine(SVM)is used to identify stego *** is demonstrated in experimental results that the proposed steganalysis algorithm can effectively detect the stego videos,and much higher classification accuracy has been achieved compared with state-of-the-art work.

关键词： Video steganalysis PU partition modes data hiding HEVC videos

The white schist assemblage in the kyanite quartzite from the ultrahigh-pressure metamorphic belt, eastern Dabie Mountains

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Chinese Science Bulletin 1998年第19期43卷 1651-1655页

作者： Laili Jiang shutong xu Yican Liu Weiping Wu Wen Su Anhui Inst Geol Hefei 230001 Peoples R China

The kyanite quartzite from the ultrahigh-pressure metamorphic belt in the eastern Dabie Mountains is composed mainly of quartz, kyanite, talc and epidote, which contains a typical mineral assemblage of white schist. It suffered an eclogite facies metamorphism of P =(2 4±0 3) GPa and T =630℃ together with coexisting eclogite. The protolith may be an aplite replaced by high-pressure fluid of eclogite facies.

关键词： Dabie Mountains ultrahigh pressure white schist assemblage

Discovery of the eclogite and its petrography in the Northern Dabie Mountain

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Chinese Science Bulletin 2000年第3期45卷 273-278页

作者： xu shutong LIU Yican SU Wen WANG Rucheng JIANG Laili WU Weiping Anhui Institute of Geology Hefei 230001China China University of Geosciences Wuhan 430074China Nanjing University Nanjing 210008China

Eclogite from the Northern Dabie Mountain is a new finding by the authors. These eclogites in foliated perdotite are enveloped by banded gneiss and occur in the mafic-ultramafic rock belt. They are mainly composed of omphacite, garnet, diopside, orthopyroxene, amphibole, plagioclase and magnetite, and a small amount of rutile, spinel, olivin and 鏾rundum. The mineral association of peak metamorphism of the eclogite is omphacite+garnet+rutile. The existence of eclogite in the Northern Dabie Mountain implies that there was an eclogitic metamorphism prior to the granulitic facies one in the mafic-ultramafic rock belt.

关键词： eclogite petrography Northern Dabie Mountain.

Tectonic Framework and Evolution of the Dabie Mountains in Anhui, Eastern China

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Acta Geologica Sinica(English Edition) 1992年第3期66卷 221-238,326页

作者： xu shutong Jiang Laili Liu Yican Zhang Yong Institute of Geological Sciences of Anhui Province, Hefei, Anhui Sun Sheping Institute of Geological Sciences of Anhui Province Hefei Anhui

The Dabie Mountains are believed to be a collisional orogenic belt between the Yangtze amd Sino-Koreancontinental plates. It is composed of the foreland fold-thrust zone, the subducting cover and basement of theYangtze continental plate, the coesite- and diamond-bearing ultra-high pressure metamorphic zone and themeta-ophiolitic melange zone in the subducting basement, the fore-arc flysch nappe and the back thrust zoneoccurring respectively on the southern and northern margins of the Sino-Korean continental plate and the in-herited basin with molassic deposits on the northern margin. When the palaeo-Dabie oceanic plate subductednorthward in the Early Palaeozoic, volcanic arc and back arc basin probably formed on the southern margin ofthe Sino-Korean continental plate. The Sm / Nd isotopic dating of the strata and eclogite which were drawn in-to the foreland fold-thrust zone indicates that the intense collision of the two continental plates took place inthe Early Mesozoic.

关键词： collisional orogenic belt ultra-high pressure metamorphic zone ophiolitic melange zone coesite diamond

Crystal structure of HLA-B＊5801, a protective HLA allele for HIV-1 infection

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Protein & Cell 2016年第10期7卷 761-765页

作者： Xiaolong Li Pedro A. Lamothe Robert Ng shutong xu Maikun Teng Bruce D. Walker Jia-huai wang School of Life Sciences University of Science and Technology of China Hefei 230027 China Department of Medical Oncology and Cancer Biology Dana- Farber Cancer Institute Harvard Medical School Boston MA 02215 USA Ragon Institute of Massachusetts General Hospital Massachusetts Institute of Technology Harvard University Boston MA 02139 USA Howard Hughes Medical Institute Chevy Chase MD 20815 USA Department of Pediatrics and Department of Biological Chemistry and Molecular Pharmacology Harvard Medical School Boston MA 02115 USA Present address: Biomarin Pharmaceutical 790 Lincoln Ave San Rafael CA 94901 USA

Conquering the AIDS epidemic remains one of the most challenging global health issues. Despite impressive advances in combination antiretroviral therapy （cART） to treat HIV, and substantial progress in the developme...

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国博宋拓本《淳化阁帖》的补配现象与版本特征

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南开学报（哲学社会科学版） 2021年第2期 141-148页

作者：徐舒桐中国国家博物馆北京100006

中国国家博物馆馆藏的泉州本《淳化阁帖》共有十卷,年代约在南宋,学界一般认为是由两种版本拼配而成,即帘纹较宽笔画略肥的第三、六、九卷,和其他七卷合并成为一套。经校勘,该版本实际情况与前辈学者所述并不相符,此本虽是十卷全本,且... 详细信息

中国国家博物馆馆藏的泉州本《淳化阁帖》共有十卷,年代约在南宋,学界一般认为是由两种版本拼配而成,即帘纹较宽笔画略肥的第三、六、九卷,和其他七卷合并成为一套。经校勘,该版本实际情况与前辈学者所述并不相符,此本虽是十卷全本,且保存完好,基本具备学界公认的"泉州本"特征,但补配现象较多,浓墨拓法和淡墨拓法在同一卷中交错出现,其中第五卷比较特殊,可见木裂和银锭纹,字口圆润含蓄,明显与其他几卷不是一套。目前存世的宋拓泉州本全本,仅有国博泉本与上图泉本两套。学者仲威总结的七条特征大约是以上图泉本为主,结合历代文献和传世泉本校勘之后所确定的,国博泉本有六条特征与仲威所述一致,说明国博泉本与上图泉本有着高度的相似性,同作为宋拓的阁帖泉州本,而其中的版本差异也有重要研究价值。

关键词：《淳化阁帖》泉州本宋拓补配版本特征

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秦汉简牍中的楚系笔法现象及其发展

南京艺术学院学报（美术与设计） 2020年第3期 10-15,I0011页

作者：徐舒桐中国国家博物馆北京师范大学北京100000

秦于前226开始灭楚战争,到前223年灭亡楚国,而里耶秦牍最早纪年是前222年,(秦王政25),可见秦文字入侵楚国的效率之高。楚国和楚文字虽被灭亡,但楚人未绝,楚笔法亦在,具有"快写" "便捷"属性的楚系笔法,顽强的寄生在了秦简墨迹中,并随之... 详细信息

秦于前226开始灭楚战争,到前223年灭亡楚国,而里耶秦牍最早纪年是前222年,(秦王政25),可见秦文字入侵楚国的效率之高。楚国和楚文字虽被灭亡,但楚人未绝,楚笔法亦在,具有"快写" "便捷"属性的楚系笔法,顽强的寄生在了秦简墨迹中,并随之进入汉代。楚系"顺锋笔法"对于汉字字体的演变和发展起到了关键性的作用,楷书和行草书字体的形成都与楚系笔法有着密切的关系。

关键词：秦简楚简笔法特征早期楷书

Crystal structures of isoorotate decarboxylases reveal the catalytic mechanism of the 5-carboxyl-uracil decarboxylation

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Crystal structures of isoorotate decarboxylases reveal the c...