نتایج جستجو برای: genus

تعداد نتایج: 140234  

1998
P. G. CASAZZA M. C. LAMMERS

We show that the classification problem for genus n Banach spaces can be reduced to the unconditionally primary case and that the critical case there is n = 2. It is further shown that a genus n Banach space is unconditionally primary if and only if it contains a complemented subspace of genus (n − 1). We begin the process of classifying the genus 2 spaces by showing they have a strong decompos...

Journal: :Zootaxa 2014
Yu-Tao Zhang

The annelid genus Dayus was established by Steiner and Amaral (1999) for a single species Stratiodrilus cirolanae Führ, 1971 from South Africa. Nevertheless the genus name Dayus is preoccupied and was initially introduced by Mahmood (1967) for a typhlocybine leafhopper genus with Dayus elongatus Mahmood, 1967 as the type species from Singapore (Insecta: Hemiptera: Cicadellidae). Thus, the genus...

Journal: :Revista de biologia tropical 2011
Inês C Gonçalves Elidiomar R Da-Silva Jorge L Nessimian

The former monotypic genus Oligoneuria Pictet was known solely by a female subimago of the type-species Oligoneuria anomala Pictet. A new species of the genus Oligoneuria from the Atlantic rainforest of Macaé, Rio de Janeiro is described. The description was based in males and females imagos of Oligoneuria macabaiba sp. nov. caught with light traps. This species presents similar wing venation, ...

2013
Tatiane Ferreira Araújo

Species from the genus Enterococcus have been used as probiotic for humans or animals, although this genus is not considered “generally recognized as safe” (GRAS). While enterococci are considered “positive" in food technology, isolates of this genus have emerged as opportunistic pathogens for the humans. The aim of this review is to summarize the characteristics that can determine the use of t...

Journal: :Zootaxa 2015
Dao-Wei Zhang Jing Chen

The braconid genus Napo was established by Shaw (2012) for a single species Napo townsendi Shaw, 2012 from Napo Province, Ecuador. However, the genus name Napo is preoccupied and was initially introduced by Linnavuori & DeLong (1976) for a deltocephalinae leafhopper genus with Napo brazosellus Linnavuori & DeLong, 1976 as the type species (Hemiptera: Cicadellidae). Thus, the genus Napo Shaw, 20...

Journal: :Zootaxa 2014
Yu-Jian Li Zi-Zhong Li

The paper deals with a new leafhopper genus of Evacanthinae, Shortcrowna gen. nov., and four species of the genus, including three new combinations and one new species, Shortcrowna biguttata (Li & Wang, 2002) comb. nov., Shortcrowna flavocapitata (Kato, 1933) comb. nov., Shortcrowna nigrimargina (Li & Wang, 2002) comb. nov., Shortcrowna leishanensis sp. nov.. The differences between the new gen...

In this study frequency and composition of plankton in Shadegan wetland was carried out in 5 stations during 2007-2008. Genus qualitative identification and their composition and quantitative frequency aspect were studied (for phytoplankton chlorophyll a). Frequency of total 42 genus phytoplankton in 4 classes Bacilariophyceae (Diatom), Cyanophyceae, Chlorophyceae and Dinophyceae are 69.4, 22.2...

2008
Oleg R. Musin

The classical multiplicative (Hirzebruch) genera of manifolds have the wonderful property which is called rigidity. Rigidity of a genus h means that if a compact connected Lie group G acts on a manifold X, then the equivariant genus h(X) is independent on G, i.e. h(X) = h(X). In this paper we are considering the rigidity problem for complex manifolds. In particular, we are proving that a genus ...

1995
YI-ZHI HUANG

We describe the construction of the genus-zero parts of conformal field theories in the sense of G. Segal from representations of vertex operator algebras satisfying certain conditions. The construction is divided into four steps and each step gives a mathematical structure of independent interest. These mathematical structures are intertwining operator algebras, genus-zero modular functors, ge...

2008
JENNIFER PAULHUS

Given a fixed genus g, we would like to know the largest possible integer t such that t copies of one elliptic curve E appear in the decomposition of the Jacobian variety JX for some curve X of genus g. In this paper we find nontrivial lower bounds for t for genus up to 10. For genus 3 through 6 we demonstrate curves X such that JX∼E .

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