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We analyzed the cumulative revision rate in 1,474 patients (1,660 hips) operated on with a cemented Scan Hip Classic I prosthesis from November 1983 to January 1994 at Lund University Hospital. The revision rate was analyzed for 3 diagnoses--arthrosis, rheumatoid arthritis and complication after a hip fracture--and for 2 head diameters--22 and 32 mm. Until January 1996, 36 hips were revised: 31 be

all-trans-Retinoic acid, one of the hormonally active derivatives of vitamin A, occurs physiologically in plasma at a concentration below 10 nmol/l. The methods currently used for its quantification are based on HPLC, need about 1 ml of serum, are relatively laborious and thus not well suited for mass analysis. The affinity and specificity of retinoic acid receptors for all-trans-retinoic acid enc

We report absolute oscillator strengths for 119 Cr II transitions in the wavelength region 2050-4850 angstrom. The transition probabilities have been derived by combining radiative lifetimes, measured with time- resolved laser induced fluorescence, and branching fractions from intensity calibrated Fouirer transform spectrometer data. New radiative lifetimes for the 3d(4)(D-5)4p F-4, D-4 and P-6 te

Popular Abstract in Swedish Avhandlingens syfte är att beskriva, analysera och jämföra rekontextualiseringen av socialpedagogik i tre olika curriculum; I Nijmegen (Nederländerna), Lillehammer (Norge) och Sligo (Irland). Rekontextualisering, ett begrepp hämtat från Basil Bernstein, syftar på den transformation som sker när socialpedagogik flyttas in i ett undervisningssammanhang. Materialet bestårThe purpose of this thesis is to describe, analyse, and compare the recontextualisation of social pedagogy in three different curricula; in Nijmegen (NL), Lillehammer (N), and Sligo (IRL). The curricula represent different academic orientations and are located in different social-political contexts. The recontextualisation of social pedagogy, the concept derived from the works of Basil Bernstein,

In this paper, we present a new way to control linear stochastic systems. The method is based on statistical bootstrap techniques. The optimal future control signal is derived in such a way that unknown noise distribution and uncertainties in parameter estimates are taken into account. This is achieved by resampling from existing data when calculating statistical distributions of future process va

Recension av Magnus Rodell, Att gjuta en nation. Statyinvigningar och nationsformering vid 1800-talets mitt

Summer N-2-fixing cyanobacterial blooms are a common feature in the Baltic Sea, and the occurrence of Nodularia spumigena toxic blooms is of particular concern. Cyanobacterial blooms can be favoured by certain conditions including high concentrations of dissolved organic matter, which may increase the availability of iron critical for N-2 fixation. Cyanobacteria may negatively affect grazers becau

We perform nuclear ground-state pairing calculations with the monopole pairing interaction. The particle number fluctuations are taken into account by the particle number projection method, with variation after projection. The pairing-correction energies obtained in this approach are compared to the BCS-model results. We discuss extensively how to properly incorporate different pairing models in g

Popular Abstract in Swedish Denna avhandling handlar till stora delar om fotodynamisk tumörterapi (PDT). PDT har sedan början av förra århundradet undersökts som ett tänkbart alternativ till strålningsbehandling, kirurgi och kemoterapi för behandling av cancertumörer i kroppen. Precis som namnet antyder involverar metoden en fotodynamisk reaktion. För att denna reaktion skall ske behövs tre kompoPhotodynamic therapy (PDT) as a cancer treatment modality relies on the simultaneous presence of three components; light, photosensitiser and oxygen. Once excited by the light, the photosensitiser can interact with oxygen, leading to the formation of toxic oxygen species. These reactive substances induce cellular damage within the irradiated tissue volume. PDT has been investigated for treating ma

The possibility of apparently negative causation has been discussed in a number of recent works on causation, but the discussion has suffered from being scattered. In this paper, the problem of apparently negative causation and its attempted solutions are examined in more detail. I discuss and discard three attempts that have been suggested in the literature. My conclusion is negative: Negative ca

Previous studies have suggested that the frequency of chromosomal aberrations (CAs), but not of sister chromatid exchanges (SCEs), predicts cancer risk. We have further examined this relationship in European cohorts comprising altogether almost 22,000 subjects, in the framework of a European collaborative project (CancerRiskBiomarkers). The present paper gives an overview of some of the results of

Efficient upconversion luminescence is observed from CdTe nanoparticles in solution and precipitated as solids. In the solids, the upconversion luminescence spectrum is significantly red shifted relative to the photoluminescence spectrum, whereas in solution, there is very little spectral shift. The upconversion luminescence exhibits a near-quadratic laser power dependence, both at room temperatur

Review of John C. Whittaker. Flintknapping, Making and understanding stone tools.