Sökresultat

Filtyp

Din sökning på "*" gav 535028 sökträffar

Mångalen

Kulturartikel om månen i folklore, litteratur, vetenskap, journaliustik och film

Personaliserad nutrition och etik : en empirisk studie av svenska konsumenters inställning till gentester för hälsans skull

Abstract In this thesis I address some of the ethical issues that arise in relation to consumers and personalised dietary advice made on the basis of genetic information. By carrying out two empirical studies, I wanted to find out what Swedish consumers think about personalised nutrition, and how they reason regarding risks, possible value conflicts, and benefits that may arise from implementing t

Lund High-power Laser Facility - Systems and 1st Results

A high-power laser facility has been established at the Lund Institute of Technology, Sweden, available to national groups and their international collaboration partners. The laboratory incorporates three major 10 Hz laser systems, that can be operated individually or synchronized in combined use. Each system represents extreme optical powers in a certain sense. The main system is a terawatt laser

Traveling waves for the Whitham equation

The existence of traveling waves for the original Whitham equation is investigated. This equation combines a generic nonlinear quadratic term with the exact linear dispersion relation of surface water waves on finite depth. It is found that there exist small-amplitude periodic traveling waves with sub-critical speeds. As the period of these traveling waves tends to infinity, their velocities approac

On the physical limitations of the interaction of a spherical aperture and a random field

This paper derives physical limitations on the interactions of antennas exciting TM or TE modes (but not both) and wireless propagation channels. The derivation is based on the spherical vector wave expansion of the electromagnetic field outside a sphere circumscribing the antennas. The result is an extension of the seminal work of Chu on the classical limitations on maximum antenna gain and radia

Historielöshet bakom rädsla för invandring

De största invandringsvågorna till Sverige har sammanfallit med de epoker då riket utvecklats allra mest. Historien ger oss inga rimliga skäl att betrakta immigration som ett problem – tvärtom kan dess betydelse för vårt välstånd knappast överskattas.

Mesenteric Torsion as a Cause of Late Abdominal Pain after Gastric Bypass Surgery.

Gastric bypass (GBP) has been the most common surgical way to treat obesity and its comorbidities. Late abdominal pain may occur by gastro-jejunal ulcers, gallstones, internal herniation or, rarely, intussusception. In an area with more than 1000 GBPs performed yearly, three patients with primary small bowel volvulus causing abdominal pain and requiring emergency or semi-urgent surgery were identi

Modeling multiple antenna systems in realistic environments - a composite channel approach

For evaluation of specific antenna arrangements in wireless communication systems we need physical channel models that take into account the directional domain. Here we propose a practical approach to wireless channel modeling in, particularly, mobile communication systems, by using an assumption that the channel can be divided into separate parts or regions that can be treated and modeled individ