نتایج جستجو برای: genetic divergences

تعداد نتایج: 619426  

Journal: :Academia Journal of Biololy 2021

The 680 bp fragment of the COI gene was employed for DNA barcodes millipede genus Tylopus in Vietnam. A total 22 samples representing 14 morphological species were analyzed. K2P genetic divergence between ranges from 12.2% to 18.9% with a mean 15 ± 1%. intraspecific divergences are slightly different species, 3% 5%. AGBD analysis and phylogenetic trees also support species. It is suggested have...

Journal: :Evolution; international journal of organic evolution 2007
G F Estabrook G R Smith T E Dowling

The mass-specific metabolic rate hypothesis of Gillooly and others predicts that DNA mutation and substitution rates are a function of body mass and temperature. We tested this hypothesis with sequence divergences estimated from mtDNA cytochrome b sequences of 54 taxa of cyprinid fish. Branch lengths estimated from a likelihood tree were compared with metabolic rates calculated from body mass a...

2017
Mengyue Guo Li Ren Xiaohui Pang

Cynanchum is a large genus with some important medicinal species in China. The medicinal species in Cynanchum are easily confused, leading to potential safety risks. In this study, the internal transcribed spacer 2 (ITS2) barcode was used to discriminate the medicinal plants in Cynanchum. The identifying capability of ITS2 was assessed using the specific genetic divergence, BLAST1, neighbor-joi...

2013
Yi Bai Yun Bu

Hesperentomon yangi sp. n. is described from eastern China. Its DNA barcodes are sequenced and compared to the similar species of the genus. Hesperentomon yangi sp. n. is characterized by 12 posterior setae on tergites II-VI, 8 posterior setae on sternites IV-VI (seta Pc absent), absence of seta sd4 on head, absence of seta P2a on tergite VII, 6 and 8 anterior setae on mesosternum and metastern...

Journal: :Far Eastern entomologist 2022

The genus Dolichocephala Macquart, 1823 of the family Empididae is recorded for first time from Iran and Azerbaijan, including one species D. monae Joost, 1981. A neighbour-joining tree based on genetic divergences CO1 gene within nine provided. In addition, Oropezella Collin, 1926 Hybotidae (one O. sphenoptera (Loew, 1873)) two subgenus Empis s. str. Linnaeus, 1758 (E. (E.) earina 1960 E. temr...

Journal: :CoRR 2016
Ha Quang Minh

This work presents a parametrized family of divergences, namely Alpha-Beta LogDeterminant (Log-Det) divergences, between positive definite unitized trace class operators on a Hilbert space. This is a generalization of the Alpha-Beta Log-Determinant divergences between symmetric, positive definite matrices to the infinite-dimensional setting. The family of Alpha-Beta Log-Det divergences is highl...

Journal: :Entropy 2014
Frank Nielsen Richard Nock Shun-ichi Amari

Clustering sets of histograms has become popular thanks to the success of the generic method of bag-of-X used in text categorization and in visual categorization applications. In this paper, we investigate the use of a parametric family of distortion measures, called the α-divergences, for clustering histograms. Since it usually makes sense to deal with symmetric divergences in information retr...

Journal: :Computational Linguistics 2017
Dun Deng Nianwen Xue

In this article, we conduct an empirical investigation of translation divergences between Chinese and English relying on a parallel treebank. To do this, we first devise a hierarchical alignment scheme where Chinese and English parse trees are aligned in a way that eliminates conflicts and redundancies between word alignments and syntactic parses to prevent the generation of spurious translatio...

2006
B. Mirza M. Zarei

In this paper, we investigate the behavior of non-commutative IR divergences and will also discuss their cancellation in the physical cross sections. The commutative IR (soft) divergences existing in the non-planar diagrams will be examined in order to prove an all order cancellation of these divergences using the Weinberg’s method. In noncommutative QED, collinear divergences due to triple pho...

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