Results 61 to 70 of about 5,773,820 (177)

Parasite diversity in Oxydoras niger (Osteichthyes: Doradidae) from the basin of Solimões River, Amazonas state, Brazil, and the relationship between monogenoidean and condition factor

open access: yesBrazilian Journal of Biology
This study describes the parasitic fauna of Oxydoras niger from the Coari Lake, tributary of the medium Solimões River, State of Amazonas, Brazil, and the relationship between the number of Monogenoidea and the condition factor.
AMO. Silva   +3 more
doaj   +1 more source

A generalization of the problem of Mariusz Meszka [PDF]

open access: yes, 2015
Mariusz Meszka has conjectured that given a prime p=2n+1 and a list L containing n positive integers not exceeding n there exists a near 1-factor in K_p whose list of edge-lengths is L.
Anita Pasotti, Antonio Pellegrini, Marco
core   +1 more source

Conditions for factorable relations [PDF]

open access: yesCzechoslovak Mathematical Journal, 1991
It is shown that a variety \(\mathcal V\) has the Fraser-Horn property for congruences (tolerances) iff the congruence (tolerance) condition \(\langle\langle x,x,x\rangle,\langle y,y,x\rangle\rangle\in \Theta\) implies \(\langle\langle x,x,y\rangle,\langle y,x,y\rangle\rangle\in \Theta\) \((\langle\langle x,x,x\rangle,\langle y,y,x\rangle\rangle ...
openaire   +2 more sources

Reproductive biology of Sciades herzbergii (Siluriformes: Ariidae) in a tropical estuary in Brazil

open access: yesZoologia (Curitiba), 2012
The present study investigated the reproductive biology of Sciades herzbergii in the Paraíba do Norte River Estuary, Brazil. We aimed to characterize the reproduction of the species with respect to sex ratio, spawning season, condition factor and length ...
Fernando R. Queiroga   +4 more
doaj   +1 more source

Stability Conditions and the Single Mode Approximation in FQHE

open access: yes, 1996
A thermodynamic stability criterion for the spontaneous breaking of the translation invariance of many particle systems is derived. It simply requires the positive character of the wavevector dependent dielectric function as generalising the same ...
Alejandro Cabo   +16 more
core   +1 more source

[Conditioning factors of weight condition].

open access: yesNutricion hospitalaria, 2017
Epidemiological studies show that during the last two decades childhood obesity has increased dramatically to become, one of the major public health concerns. Dietary habits, lack of physical activity and the degree of obesity rates and worsen over the years making overweight children overweight adults.determine the influence of various modifiable ...
Ismael, San Mauro   +9 more
openaire   +1 more source

Age, length-weight relationships and condition factors of endemic Antalya barb Capoeta antalyensis (Battalgil, 1943)

open access: yesJournal of Fisheries, 2020
The aim of this study was to determine the length-weight, length-length relationships (LWR and LLR) and condition factors of Antalya barb Capoeta antalyensis, an endemic species to Turkey.
Soner Çetinkaya   +5 more
doaj  

Commercial-biological characteristics of tulka (Clupeonella cultriventris Nordmann, 1840) of the Dnieper-Bug estuary system

open access: yesRibogospodarsʹka Nauka Ukraïni, 2017
Purpose. To give biological assessment of the commercial stock of tulka Clupeonella cultriventris (Nordmann, 1840) of the Dnieper-Bug estuary system in the conditions of the reduced Dnieper flow. Methodology.
K. Geina, S. Shashlykova
doaj   +1 more source

Diet, size and reproductive biology of the silver catfish, Chrysichthys nigrodigitatus (Siluformes: Bagridae) in the Cross River, Nigeria

open access: yesRevista de Biología Tropical, 2008
The silver catfish, Chrysichthys nigrodigitatus (Lacépède: 1803) is a highly valued food-fish included among the dominant commercial catches exploited in major rivers of Africa.
Benedict Obeten Offem   +2 more
doaj  

Why edge effects are important on the intrinsic loss mechanisms of graphene nanoresonators?

open access: yes, 2012
Molecular dynamics simulations are performed to investigate edge effects on the quality factor of graphene nanoresonators with different edge configurations and of various sizes.
Jiang, Jin-Wu, Wang, Jian-Sheng
core   +1 more source

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