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A review of the fossil Embolemidae (Hymenoptera: Chrysidoidea), with description of seven new species and history of the family 期刊论文  OAI收割
CRETACEOUS RESEARCH, 2021, 卷号: 121, 页码: 20
作者:  Perkovsky, Evgeny E.;  Olmi, Massimo;  Mueller, Patrick;  Guglielmino, Adalgisa;  Jarzembowski, Edmund A.
  |  收藏  |  浏览/下载：23/0  |  提交时间：2021/10/20
Phylogenetic patterns suggest frequent multiple origins of secondary metabolites across the seed-plant 'tree of life' 期刊论文  OAI收割
NATIONAL SCIENCE REVIEW, 2021, 卷号: 8, 期号: 4, 页码: nwaa105
作者:  Zhang,Yongzeng;  Deng,Tao;  Sun,Lu;  Landis,Jacob B.;  Moore,Michael J.
  |  收藏  |  浏览/下载：49/0  |  提交时间：2022/04/02
Foliar epidermal micromorphology and its taxonomic implications in some selected species of Athyriaceae 期刊论文  OAI收割
MICROSCOPY RESEARCH AND TECHNIQUE, 2018, 卷号: 81, 期号: 8, 页码: 902-913
作者:  Shah, Syed Nasar;  Ahmad, Mushtaq;  Zafar, Muhammad;  Razzaq, Abdul;  Malik, Khafsa
  |  收藏  |  浏览/下载：27/0  |  提交时间：2022/02/25
Mid-late Pleistocene glacial evolution in the Grove Mountains, East Antarctica, constraints from cosmogenic Be-10 surface exposure dating of glacial erratic cobbles 期刊论文  OAI收割
QUATERNARY SCIENCE REVIEWS, 2016, 卷号: 145, 期号: 0, 页码: 71-81
作者:  Dong, GC (Dong, Guocheng);  Huang, FX (Huang, Feixin);  Caffee, MW (Caffee, Marc W.);  Huang, FX;  Yi, CL (Yi, Chaolu)
  |  收藏  |  浏览/下载：29/0  |  提交时间：2017/09/26
Glacial HisTories From The East Antarctic Ice Sheet (Eais) Provide Keys To UnderstAndIng Correlations Between The Eats And Global Climate. They Are Especially Helpful In The Assessment Of Global Sea Level Change  And As a Means Of Quantifying The Magnitude Of pAst Glacial Activity And The RAte At Which Ice Responded To climAte Change. Given The Significance Of Eais Glacial hisTories  It Is Imperative That More Glacial Chronologic Data For thIs Region Be Obtained  Especially For The Mid-to-lAte Pleistocene. We Report Cosmogenic Be-10 Surface Exposure DAtIng Results From Glacially Transported Cobbles Embedded In Blue-ice moraIne MAterial At Mount hardIng  The Grove Mountains  Eais. Forty Exotic Cobbles Sampled AlOng Two PrOfiles (a And b) On This Blue-ice MoraIne Present Apparent Exposure-ages RangIng From 7.2 To 542.2 Ka. We Explore This Scattered Dataset By UsIng PrIncipal compOnent Analysis (Pca) To Identify Statistically Significant Trends In The Data. We Identify a correlatiOn betWeen Exposure-age And Distance Of The Cobbles From Mount hardIng. In prOfile a  Cobbles Further From Mount HardIng Yield Older Exposure-ages Than Those That Are Relatively Close. In Profile b  Cobbles Closer To Mount HardIng Are Found To Have Relatively Older Exposure-ages. In Term Of Glacial hisTory We Suggest That The Direction Of Ice Flow Changed durIng The Period From Similar To 60 To 200 Ka  And That Multiple Glacial Fluctuations Occurred In The Mid-late Pleistocene. (c) 2016 Elsevier Ltd. All Rights Reserved.  
A new algorithm for solving the best-fit sphere of optical aspherical surface (EI CONFERENCE) 会议论文  OAI收割
2nd International Conference on Advances in Materials and Manufacturing, ICAMMP 2011, December 16, 2011 - December 18, 2011, Guilin, China
作者:  Lin J.;  Lu M.
收藏  |  浏览/下载：40/0  |  提交时间：2013/03/25
To solve the best-fit sphere (BFS) accurately is one of the technological keys for the generating and testing of optical aspherical surfaces. This paper presents a new algorithm for solving the BFS of aspherical surfaces to suppress some deficiencies in the existing BFS algorithms. In the proposed approach  it is not only suitable for the conic surface  a BFS is constructed  but also for higher order aspheres. The obtained asphericity and material removal function is more suitable for the machining and test. (2012) Trans Tech Publications  which passes through both sides of endpoints in the section o -?xy of the aspherical surfaces  Switzerland.  the center of the BFS is shifted along the x-axis  and its radius of curvature is automatically computed. The variable step size method is proposed to speed up the convergence of the iteration. Through numerically solving the BFS of conic and cubic surface  the advantages of the proposed approach are verified. The results show that the proposed approach is of rapid convergence  and high accuracy  
Remark on s. saeednia and h. ghodosi's group-oriented cryptosystem 期刊论文  iSwitch采集
Chinese journal of electronics, 2006, 卷号: 15, 期号: 4, 页码: 725-726
作者:  Xu Chunxiang;  Zhou Junhui;  Ka Guozhen
收藏  |  浏览/下载：16/0  |  提交时间：2019/05/10
A compatible chord code for inputting elements of Chinese characters 期刊论文  OAI收割
APPLIED ERGONOMICS, 2001, 卷号: 32, 期号: 3, 页码: 293-297
作者:  Mou, WM;  Zhang, K;  W. M. Mou
  |  收藏  |  浏览/下载：18/0  |  提交时间：2011/08/22