Water and salt mass balances for the Dead Sea were modeled. Precipitation, evaporation, river discharges, ground water flows, input/output from potash companies and salt production, and brine discharge were included in the models. The mixing time in the Dead Sea was modeled using a single-layer (well-mixed) a two-layer (stratified) system. Using the single-layer approach the water level was predi

We investigate the propagation of electromagnetic waves in a waveguide filled with a nonlinear material. The electromagnetic field is expanded in the usual eigenmodes of the waveguide, and the coupling between the modes is quanti fied. We derive the wave equations governing each mode, with special emphasis on the situation with a dominant TE-mode. The result is a strictly hyperbolic system of nonline

Hybrid electric and full electric vehicles have attracted growing attention during the last decade. This is a consequence of several factors, such as growing environmental concerns, increasing oil prices and a strive for oil independency. Hybrid vehicles have proven to have significant potential to improve fuel economy and at the same time enhance the performance of the vehicle. For the hybrid car

Popular Abstract in Swedish Hur är grannsämjan i skånska vattendrag? Grönling, öring och signalkräfta är tre vanligt förekommande arter i rinnande vatten i Skåne. Öringens biologi och ekologi är väl undersökta och den är dessutom en populär sportfisk. Signalkräftan inplanterades i slutet på 1960-talet för att ersätta den inhemska flodkräftan och är även den ekonomiskt viktig, samt relativt väl stStream ecosystems are dynamic and they have an inherent environmental variability. Organisms that live in streams are adapted to the continuously changing environment and the presence or absence of species are determined by their environmental requirements, while abundance is most often affected by interactions, such as competition and predation, with other species that are found in the same habit

När professorn Ann-Marie ­Mårtensson Pendrill ska undervisa barn i fysik går hon gärna till en lekpark eller ett nöjesfält. De är nämligen utmärkta platser att demonstrera Newtons lagar på.

This paper uses data from a 2010 Swedish nationwide survey (done in cooperation with the SOM institute in Gothenburg) in order to study whether citizens who engage in participatory activities, especially signing petitions, while using sites like Facebook share demographic and other features with citizens who are known from previous studies to be more likely to participate in politics. Does the me