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This study aimed to investigate the effect of dose reduction on diagnostic accuracy and radiation risk in digital mammography. Simulated masses and microcalcifications were positioned in an anthropomorphic breast phantom. Thirty digital images, 14 with lesions, 16 without, were acquired of the phantom using a Mammomat Novation (Siemens, Erlangen, Germany) at each of three dose levels. These corres

Agriculture in many African countries is characterised by large diversity in production and great variation in growing conditions, irrigation potential and access to markets. This variation has proved to be a difficult matter when adjusting national agricultural policies and development projects to local conditions. In the face of the recent trend of less support for agricultural extension servic

colon; Prompted by previous studies suggesting that bulimia nervosa in women may be associated with elevated serum levels of testosterone, we have evaluated the possible effect of androgen antagonism in this condition. To this end, women meeting the DSM-IV criteria of bulimia nervosa, purging type, were treated in a one-center study with the androgen receptor antagonist flutamide (n = 9), the sero

Popular Abstract in Swedish Avhandlingen, som består av tre delar, handlar om olika metoder för att undersöka algebraiska begrepp med hjälp av datorberäkningar. I första delen visar vi att en viss Liealgebra inte, till skillnad från många andra Liealgebror av liknande typ, kan brytas ned i vinkelräta komponenter av en speciellt enkel typ. Andra delen handlar om vilka polynom som kan bildas genomThis thesis consists of a collection of articles all using and/or developing algorithmic methods for the investigation of different algebraic structures. Part A concerns orthogonal decompositions of simple Lie algebras. The main result of this part is that the symplectic Lie algebra C3 has no orthogonal decomposition of so called monomial type. This was achieved by developing an algorithm for fin

The decay kinetics of the 2.88 eV emission of pure and Bi-doped CaWO4 crystals has been studied in the temperature region of 4.2-300 K. The decay components connected with the radiative transitions from the triplet excited states of regular WO42- oxyanionic complexes and WO42- complexes perturbed by Bi3+ ions (WO42-(Bi3+) centres) have been identified. It is shown that WO4(Bi3+) centres can be exc

Abstract not available

BACKGROUND AND OBJECTIVE: Ultrasound has become an increasingly popular modality in facilitating the performance of peripheral nerve blocks. There exists no literature that examines the learning curve of the ultrasound novice. In this prospective series, we evaluated the learning curve of inexperienced anesthesia residents in performing a simulated ultrasound-guided interventional procedure. In do

The neutron g(9/2) single-particle state in Ni-57 has been unambiguously identified in a combined measurement of the linear polarization, angular distribution, and angular correlation of gamma rays following the fusion-evaporation reaction Si-28(S-32,2pn)Ni-57 at a beam energy of 90 MeV. The linear polarization was measured with a EUROBALL cluster detector and a prototype of an encapsulated six-fo

This article reflects on the video art-work "No Man... An Island" by Swedish artist Anna Brag, and on issues of representation of migration, visibility, and identity in television and other media.

Så kallade "mjukfogar" förekommer på ett flertal olika ställen i våtrum, t ex vid badkar, dusch, handfat och övrigt sanitetsgods, i kakelbeklädnader i vägghörn och golvvinklar och vid genomföringar. För att undvika problem med mögelangrepp krävs bl a att fogmassan är av rätt typ och fogen ges en lämplig utformning

We report on large-scale ah initio multiconfiguration Hartree-Fock calculations for the UV0.01 multiplet, 2s(2)2p(2)P(J)-2s2p(2 4) P-J', in N III. The resulting transition probabilities agree very well with recent semiempirical calculations, and the lifetimes for two of the three upper levels agree with experiments. The deviation for the third level is discussed. Comparisons made with the highest

I detta kapitel beskrivs hur man vid Lunds tekniska högskola organiserar kursvärderingar som en del i ett övergripande arbete med rapporterande utvärdering av kurser. Syftet är att bidra med förståelse för hur olika konkreta problem förknippade med genomförandet av ett system för kursvärdering och utvärdering angripits på Lunds tekniska högskola. kapitlet visar också på hur Lunds tekniska högskola