Metallic elements have various origins: natural and anthropogenic sources as geochemical, marine atmospheric resulting from the fallout of pollutants emitted or dust raised which are transported by water air currents. Thus marine, brackish fresh continental waters may high metal concentrations. In addition, some essential metals can become toxic above certain concentration values in aquatic env...

Background: The physiological age of vectors is an indicator often used in the evaluation of the efficacy of malaria vector means. The purpose is to study the ovarian development stage for the determination of the physiological age of mosquitoes. Methods: Mosquitoes were collected using human landing catch at night in the district of Itassoumba and Abomey-takplikpo, south-eastern Benin. Females...

Ghislain Emmanuel Sopoh, Roch Christian Johnson, Séverin Yehouénou Anagonou, Yves Thierry Barogui, Ange Dodji Dossou, Jean Gabin Houézo, Delphin Mavingha Phanzu, Brice Hughes Tente, Wayne M. Meyers, and Françoise Portaels Author affi liations: Centre de Dépistage et de Traitement de l’Ulcère de Buruli d’Allada, Allada, Bénin (G.E. Sopoh, A.D. Dossou, J.G. Houezo); Programme National de Lutte Co...

With the two most profound conceptual revolutions of XX century physics, quantum mechanics and relativity, which have culminated into relativistic spacetime geometry and quantum gauge field theory as the principles for gravity and the three other known fundamental interactions, the physicist of the XXI century has inherited an unfinished symphony: the unification of the quantum and the continuu...

Bovid diets have been studied for decades, but debate still exists about the diets of many species, in part because of geographical or habitat-related dietary variations. In this study we used stable carbon isotope analyses of faeces to explore the seasonal dietary preferences of 11 bovid species from a West African savanna, the Pendjari Biosphere Reserve (PBR), along the browser/grazer (or C3/...

Based on the physical projector approach, a nonpertubative quantization of the massless Schwinger model is considered which does not require any gauge fixing. The spectrum of physical states, readily identified following a diagonalization of the operator algebra, is that of a massive pseudoscalar field, namely the electric field having acquired a mass proportional to the gauge coupling constant...

The logistics and cost of environmental monitoring can represent challenges for heritage managers, partly because of the sheer number of environmental parameters to consider. There is a need for a system, capable of monitoring the holistic impact of the environment on cultural materials while remaining relatively easy to use and providing remote access. This paper describes a dosimetric system ...