Volume 35, Issue 2
مرور بر اساس
ارسال های اخیر
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Freshwater green algae Chlorella sp. and Scenedesmus obliquus enriched with B group of vitamins can enhance fecundity of Daphnia magna
(Springer, 2011-05-01)One of the most important aims of aquatic hatcheries is availability to mass produce of Daphnia magna as a live food with high nutritional value in the shortest time. In the present study, D. magna fed with two freshwater ...
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Environmental impacts of natural contaminants and mining activities on the surface and agricultural soils in the Aq-Darreh river watershed, Takab, West Azerbaijan Province, NW Iran
(Springer, 2011-05-01)The concentrations of potentially toxic elements (As, Sb, and Hg) and some trace elements in 36 topsoil samples and 18 agricultural soil samples were measured at the Aq-Darreh River watershed, NW Iran. Based on the results of ...
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Resource allocation in multi-server dynamic PERT networks using multi-objective programming and Markov process
(Springer, 2011-05-01)In this research, both resource allocation and reactive resource allocation problems in multi-server dynamic PERT networks are analytically modeled, where new projects are expected to arrive according to a Poisson process, ...
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The measurement of returns to scale under a simultaneous occurrence of multiple solutions in a reference set and a supporting hyperplane with weight restrictions
(Springer, 2011-05-01)Sueyoshi and Sekitani in 2007 presented a paper that explores the measurement of Returns to Scale under a possible occurrence of multiple solution in a reference set and a supporting hyperplane. The occurrence ofmultiple ...
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Bivariations and tensor products
(Springer, 2011-05-01)The ordinary tensor product of modules is defined using bilinear maps (bimorphisms), that are linear in eachcomponent. keeping this in mind, Linton and Banaschewski with Nelson defined and studied the tensor product in an ...
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The Nehari manifold for a Navier boundary value problem involving the p-biharmonic
(Springer, 2011-05-01)In this paper, we study the Nehari manifold and its application on the following Navier boundary valueproblem involving the p-biharmonic 0, on( ) 1 ( , ) , in , 2*2u uf x u u upu u p q where ...
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On Matsumoto metrics of special Ricci tensor
(Springer, 2011-05-01)In this paper, the Matsumoto metric with special Ricci tensor has been investigated. It is proved that, if is ofpositive (negative) sectional curvature and F is of -parallel Ricci curvature with constant killing 1-form ...
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A new edge detection method based on the analytic signal of tilt angle (ASTA) for magnetic and gravity anomalies
(Springer, 2011-05-01)In order to obtain maximum information from magnetic and gravity anomaly maps, application of an edgedetection method is necessary. In this regard two commonly used methods are derivative filters and local phase filters. ...
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Regarding the Kähler-Einstein structure on Cartan spaces with Berwald connection
(Springer, 2011-05-01)A Cartan manifold is a smooth manifold M whose slit cotangent bundle 0T *M is endowed with a regularHamiltonian K which is positively homogeneous of degree 2 in momenta. The Hamiltonian K defines a (pseudo)-Riemannian ...
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-hypergroups and -semihypergroups associated to binary relations
(Springer, 2011-05-01)The concept of -semihypergroups is a generalization of semigroups, a generalization of semihypergroups and a generalization of -semigroups. In this paper, we study the concept of semiprime ideals in a -semihypergroup and ...
