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NEW DISCOVERIES OF LONGFENGSHANIACEAE FROM THE UPPERMOST EDIACARAN IN THE EASTERN YUNNAN, SOUTH china

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NEW DISCOVERIES OF LONGFENGSHANIACEAE FROM THE UPPERMOST EDI...

第二届国际古生物学大会

作者： Feng TANG Chongyu YIN Pengju LIU Xueliang SONG Ziqiang WANG Linzhi GAO Institute of Geology chinese academy of Geological sciences Beijing 10003. {3.. Institute of Geosciences Yunnan Province Kunming 650051 {3. {3. university of Geosciences Beijing 100083.{3.

＜正＞A morphologically more diverse assemblage of Longfengshaniaceae has been found in the uppermost Ediacaran （Sinian） Jiucheng Member, Yuhucun Formation at Jinning and Jiangchuan County, eastern Yunnan, South china. A majority,of them are different from the Longfengshania in the Neoproterozoic Changlongshan Formation, Yanshan Mountain Area, North china and the Mesoproterozoic Little Dal Group, North America. They are mainly characterised by a more varied, often thallus-like appearance, such as shuttle-shaped, jujube nucleus-shaped, shovel-shaped, ribbon-shaped or balloon-shaped, and more sturdy stalk-like projection （stipe） with a smooth connection on the basal part of the thallus. In addition, they appear to have a remarkable attaching organ of lanceolate, shuttle-like or short stem-like structure at the base of the stipe. Six distinct morphological taxa are recognised, including one new

关键词： the eastern Yunnan Ediacaran Jiucheng Member Longfengshaniaceae

COMPARATIVE　GEOLOGICAL　STUDY　BETWEEN　FUJIAN　REGION　IN　china　AND　INNER　ZONE　OF　SOUTHWEST　JAPAN

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Scientia Geologica Sinica 1996年第4期 425-434页

作者： Yoshikazu Hayama and Michiya Inomata (Tokyo university of Agriculture, Tokyo, 156, Japan)Yoshimitsu Koido (Gifu university, Gifu, 501-11, Japan)Wu Genyao and Zhang Wenhua (Institute of Geology, chinese {3. Of sciences, Beijing 100029, china)Hiroo Kaga

ＣＯＭＰＡＲＡＴＩＶＥＧＥＯＬＯＧＩＣＡＬＳＴＵＤＹＢＥＴＷＥＥＮＦＵＪＩＡＮＲＥＧＩＯＮＩＮＣＨＩＮＡＡＮＤＩＮＮＥＲＺＯＮＥＯＦＳＯＵＴＨＷＥＳＴＪＡＰＡＮＹｏｓｈｉｋａｚｕＨａｙａｍａａｎｄＭｉｃｈｉｙａＩｎｏ...

ＣＯＭＰＡＲＡＴＩＶＥＧＥＯＬＯＧＩＣＡＬＳＴＵＤＹＢＥＴＷＥＥＮＦＵＪＩＡＮＲＥＧＩＯＮＩＮＣＨＩＮＡＡＮＤＩＮＮＥＲＺＯＮＥＯＦＳＯＵＴＨＷＥＳＴＪＡＰＡＮＹｏｓｈｉｋａｚｕＨａｙａｍａａｎｄＭｉｃｈｉｙａＩｎｏｍａｔａ（ＴｏｋｙｏＵｎｉｖｅｒｓ...

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Complexity Research for B Algorithm

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Complexity Research for B Algorithm

2003.中国智能自动化会议

作者： Han Aili Pan Jingchang Yang Zhimin (Department of Computer Science, Shandong university at Weihai, Weihai 264209, china) (Lab. of Computer Science, Institute of Software, chinese {3. of sciences,Beijing 100080, china)

The time complexity of B algorithm-one of the intelligent search algorithms-is discussed. Firstly, by anatomizing a typical instance, it is pointed out that cost of computing the value of heuristic function h(n) should be included in the scope of complexity analysis in B algorithm. And then, a recursive algorithm of computing the value of h(n) is presented. Finally,by analyzing the cost of computing the value of h(n), it is concluded that in the worst case, the times of recursion in B algorithm is O(n!). Therefore, the time complexity of B algorithm is exponential instead of O(n2).

关键词： intelligent computation algorithm complexity

东海陆架盆地瓯江凹陷明月峰组沉积相及沉积特征分析

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天然气地球科学 2011年第5期22卷 760-769页

作者：陈国俊李超梁建设王琪吕成福张锦伟杜贵超田兵中国科学院油气资源研究重点实验室甘肃兰州730000 中国科学院研究生院北京100049 中海石油(中国)有限公司北京研究中心北京100027

通过岩心观察描述,综合测井、录井、古生物、重矿物等资料,结合地震相分析,以瓯江凹陷构造演化及相对海平面变化为主线,从物源分析出发,综合分析瓯江凹陷明月峰组沉积相类型及沉积特征。晚古新世明月峰组沉积期,瓯江凹陷处于断拗转换阶... 详细信息

通过岩心观察描述,综合测井、录井、古生物、重矿物等资料,结合地震相分析,以瓯江凹陷构造演化及相对海平面变化为主线,从物源分析出发,综合分析瓯江凹陷明月峰组沉积相类型及沉积特征。晚古新世明月峰组沉积期,瓯江凹陷处于断拗转换阶段,沉积物源由凹陷西侧的闽浙隆起带酸性火山岩源区和凹陷东侧的雁荡低凸起提供,以闽浙隆起带物源占绝对优势,受中古新世至晚古新世中期大规模海侵的影响,相对海平面持续升高,凹陷东侧雁荡低凸起开始接受沉积,使得凹陷沉积范围达到断陷期最大,总体呈滨海—浅海沉积,闽浙隆起带物源供应充分,在凹陷西缓坡发育3.大型三角洲沉积,滨海沉积发育于凹陷西缘三角洲之间及雁荡低凸起位置,凹陷中央发育大范围的浅海沉积。控制明月峰组各沉积相空间展布的主控因素是构造和相对海平面变化,以相对海平面变化为主。

关键词：物源分析沉积相沉积特征明月峰组瓯江凹陷

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Grhl2 is essential for otic development and hearing by promoting claudin b and epcam expression

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Grhl2 is essential for otic development and hearing by promo...

“细胞活动生命活力”——中国细胞生物学学会全体会员代表大会暨第十二次学术大会

作者： Yanchao Han~1,Yu Mu~2,Xiaoquan Li~2,Pengfei Xu~1,Jingyuan Tong~1,Zhaoting Liu~3.Tingting Ma~1,Guodong Zeng~1, Shuyan Yang~1,Jiulin Du~2 and Anming Meng~(1,3. 1.State Key Laboratory of Biomcmbranc and Membrane Engineering,School of Life sciences,Tsinghua university,Beijing 100084,china 2.Institute of Neuroscicncc and State Key Laboratory of Neuroscience,Shanghai Institutes for Biological sciences,chinese academy of sciences,Shanghai 20003.,china 3.State Key Laboratory of Biomcmbranc and Membrane Engineering,Institute of Zoology,chinese academy of sciences,Beijing 100101,china

Congenital and progressive hearing impairment is a common distressing *** progressive dominant hearing loss DFNA28 in human is associated with a frameshift mutation of Grainyhead-like 2(GRHL2) but its etiology and mechanism remain *** we report a zebrafish grhl2b mutant line,in which grhl2b expression is interrupted by an insertion of a Tol2 transposon *** mutants exhibit enlarged otocysts,smaller or eliminated otoliths,malformed semicircular canals,insensitiveness to sound stimulation,and imbalanced swimming *** Grainyhead-like family members can regulate epithelial adhesion,we examined the expression of some genes encoding junction proteins in *** show that the expression of claudin b(cldnb) and epcam is abolished or dramatically reduced and apical junctional complexes are abnormal in otic epithelial cells of mutant *** of cldnb and epcam mRNA could largely rescue the mutant *** of human wild-type GRHL2 mRNA but not the mutant GRHL2 mRNA derived from DFNA28 patients into grhl2b mutant embryos could rescue the inner ear ***,we demonstrate that Grhl2b directly binds to the enhancers and promotes the expression of cldnb and ***,this work reveals an evolutionary conserved function of Grhl2 in otic development and provides a fish model for further studying mechanisms of Grhl2-related hearing loss.

关键词： inner ear hearing grainyhead-like 2 mutant zebrafish apical junctional complex

Habitat selection by territorial male Ring-necked Pheasants: a synthetic analysis

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Habitat selection by territorial male Ring-necked Pheasants:...

23.d International Ornithological Congress

作者： Ni Xijun Zheng Guangmei and Zhang ZhengwangInstitute of Vertebrate Paleontology and Paleoanthropology, chinese academy of sciences, Beijing, 100044 Ministry Key Laboratory for Biodiversity Science and Ecological Engineering, College of Life sciences, Beijing Normal university,Beijing 100875, china

＜正＞ Recent research reveals that breeding male Ring-necked Pheasants （Phasianus colchicus） tend to select habitats that are mixed, establishing their territories where patches of several types of habitat meet. Traditional analyses dealt with such preferences by addressing selectivity for each habitat type separately. Our research emphasizes the need for a more interactive approach. Areas where several habitat patches mesh may be termed habitat complexes;pheasant selectivity for such complexes is the outcome of historic adaptation to modern

关键词： habitat complex. Ring-necked Pheasant habitat selectivity territory.

The Analysis of CO2 Influence Factors in Tianquan Cave of Xingwen World Geopark

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四川地质学报 2009年第S1期 113-119页

作者： SHUI Wei 1 HU Yi 2 ZHANG Bing 3.SU Zheng-an 4 WANG Chen-yi 2 REN De-you 3.XU Xue-yi 1 CHENG Jin-ping 2(1.Department of Eco-agriculture and Rural Development,Sichuan Agricultural university,Ya'an 625014,Sichuan 2.College of Resources and Environment,Sichuan Agricultural university,Ya'an 625014,Sichuan 3.School of Land and Resources,china West Normal university,Nanchong 63.002,Sichuan 4.Institute of Mountain Hazards and Environment,chinese academy of sciences and Ministry of Water Conservancy,Chengdu 610041,Sichuan)

A Vaisala CARBOCAP Hand-Held Carbon Dioxide Meter GM70 was used to measure CO 2 concentration in Tianquan cave of Xingwen world *** study was done in Tianquan cave during July and August,*** sources include the influence factors of distribution of CO 2:elevation,tourists,cross section and depth of the *** indicated tourists have strong impacts on the CO 2 concentration,while no significant differences could be found among different ***,significant correlation could be found among the depth of cave,the small cross section,the tourist's construction and the CO 2 *** results indicate that the CO 2 concentration in Tianquan cave has no threat to the health of *** results and the data provide a scientific basis for the protection of people's health and the exploitation of cave tourism.

关键词： Xingwen world Geopark Tianquan cave CO 2 concentration Influence factors

Multiple-beams Mutually Pumped Phase Conjugation Generated by a Bridge Phase Conjugator in Photorefractive Ba1-x Srx TiO3.Crystal

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chinese Journal of Lasers 2000年第5期 69-75页

作者： QIU Yishen LU Tuansun HUANG Wenchai ZHENG Zhiqiang (Department of Physics, Fujian Teachers university, Fuzhou 3.0007, china)ZHUANG Jian TANG Dingyuan (Fujian Institute of Research on the Structure of Matter, chinese {3. of sciences, Fuzhou 3.0

A new method generating multiple beams mutually pumped phase conjugation (MMPPC) in a photorefractive Ba 1-x Sr x TiO 3.crystal is demonstrated, in which a pumping beam is incident upon a face of the crystal and two signal beams are introduced into +c face of the crystal with the almost same incident angle and position. The time evolution of the phase conjugations from signal beams and the dependence of phase conjugate reflectivities on the input beam intensity ratios are presented. Also, the amplitude coupled wave equations based on the model of two interaction reigns is derived. The results obtained by numerical calculation of the corresponding coupled wave equations show qualitative agreement with the experimental results.

关键词： phase conjugation Ba 1-x Sr x TiO 3.crystal multiple beams mutually pumping

Improvement of sensitivity of graphene photodetector by creating bandgap structure

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chinese Physics B 2017年第11期26卷 429-433页

作者：张倪侦何孟珂余鹏周大华 Chongqing Key Laboratory of Photo-Electric Functional Materials College of Physics and Electronic EngineeringChongqing Normal University Chongqing Key Laboratory of Multi-scale Manufacturing Technology Chongqing Institute of Green and Intelligent TechnologyChinese Academy of Sciences

Graphene has aroused large interest in optoelectronic applications because of its broad band absorption and ultrahigh electron mobility. However, the low absorption of 2.3. seriously limits its photoresponsivity and restricts the relevant applications. In this paper, a method to enhance the sensitivity of graphene photodetector is demonstrated by introducing electron trapping centers and creating a bandgap structure in graphene. The carrier lifetime obviously increases, and more carriers are collected by the electrodes. Compared with intrinsic graphene detector, the defective graphene photodetector possesses high photocurrent and low-driving-voltage, which gives rise to great potential applications in photodetector area.

关键词： graphene photodetector photocurrent bandgap

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