Filtyp
We consider a two Higgs doublet model with a U(1) Froggatt Nielsen mechanism. The Froggatt Nielsen charges of the fermions are chosen such that the correct mass structure and quark mixing matrix is obtained, and such that Flavor Changing Neutral Currents are within experimental limits. We do not assume any discrete symmetry of the lagrangian, and let Charge Parity be violated, both in the Higgs se
In an age-structured model originating from cancer research, the cell cycle is divided into two phases: Phase 1 of variable length, consisting of the biologically so called G1 phase, and Phase 2 of fixed length, consisting of the so called S, G2 and M phases. A system of nonlinear PDEs along with initial and boundary data describes the number densities of cells in the two phases, depending on time
Urban environments are rapidly growing worldwide with severe consequences to animals and plants residing in our cities. Some of the most well-studied urban wildlife is passerine birds, where a wide array of effects have been documented; smaller clutches, earlier breeding, shorter telomeres and oxidative stress are just some costs among numerous others. Yet, few studies have so far investigated the
Atlantic cod is one of the world´s most important commercial fish stocks and is dependent on fishing regulations for its wellbeing and survival. An important part in fisheries management is information of the stock distribution. This is needed to not cause overestimations that results in heavy overfishing. Here, Kattegat and North Sea male and female cod of the same ages (3- to 5-year-old) were di
Riparian buffer zones have become an established concept in the forestry industry, meant to preserve species richness, stabilize the shoreline, and prevent leakage of nutrients and sediments to forest streams and lakes. It is a common perception in the Swedish Forest Agency in Halland that the handling of buffer zones in the forestry industry is insufficient to protect the freshwater streams and l
Mangrove ecosystems constitute a valuable economic resource harbouring a wide diversity of organisms and operating an essential provider of nutrients for adjoining marine ecosystems. The meiobenthic fauna (i.e. small benthic invertebrates) plays an important role in the food chain and has proven to be a useful indicator on environmental stressors within the mangrove forest. This study is conducted
In the municipality Sölvesborg in the county Blekinge located in south Sweden, there is an area which the municipality have planned as ”nature”. It is an area of forest, dominated by beech. After being in contact with the municipality ecologist we started this project with the aim to come up with ideas for how to increase the values in the area, both ecologic and social. We have also discussed how
Sölvesborg is a small municipality located in the county of Blekinge in the south part of Sweden. The landscape is dominated by European beech and agriculture. Here there is a patch of land that the municipality has planned as ”Nature” according to Swedish law. This piece of land is located in between two nature reserves called Brötalyckorna and Valje. For this project our task has been to figure
