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Binding of bi-isonicotinic acid to anatase TiO2 (101)

The interaction between dye and semiconductor is a central aspect of dye-sensitized solar cells. We have in this paper studied the binding of the common ligand bi-isonicotinic acid (4,4'-dicarboxy-2,2'-bipyridine) to TiO2 anatase (101) surfaces by means of quantum chemical calculations. Different adsorption models were studied with carboxyl oxygens binding to surface Ti atoms, and the acidic proto

Triassic-Jurassic weathering and clay mineral dispersal in basement areas and sedimentary basins of southern Sweden

The basement rocks of southern Sweden were deeply weathered in Late Triassic through Cretaceous times, and possibly even earlier. Sub-Mesozoic saprolites formed, presumably due to long-term warmth and humidity, in conjunction with decomposition of abundant organic matter and subsequent infiltration of acidic water. The upper parts of the weathering profiles were subjected to intense leaching and k

The contribution of social factors to the development of schizophrenia: A review of recent findings

Objective: To investigate recent evidence suggesting that social factors are causally related to the development of schizophrenia. Method: I conducted a sytematic review of MEDLINE to identify possibly relevant studies. The search was limited to peer-reviewed studies and review articles appearing in English-language journals since 1996. Studies were included if they used standardized diagnostic cr

Multiconjugate adaptive optics for large telescopes: analytical control of the mirror shapes

We present an analytical algorithm for deriving the shapes of the deformable mirrors to be used for multiconjugate adaptive correction on a large telescope. The algorithm is optimal in the limit where the overlap of the wave-front contributions from relevant atmospheric layers probed by the guide stars is close to the size of the pupil. The fundamental principle for correction is based on a minimi

Age and metallicity gradients in the Galactic Bulge - A differential study using HST/WFPC2

The Galactic Bulge has long been assumed to be a largely old stellar population. However, some recent studies based on observations with the HST WF/PC-1 and WFPC2 of stars in the Galactic Bulge have concluded that the old population may not make up more then 30% of the total. Other studies using HST/WFPC2 differential studies of `Bulge' globular clusters and field stars have found the bulge to be

Monitoring of cerebral function after severe asphyxia in infancy

Thirty nine infants with severe asphyxia (28 affected perinatally and 11 later) were studied by electrophysiological cerebral function monitoring (CFM) for periods varying from a half to 49 days. Nineteen infants died while still in intensive care and two died later from sequelae. Eighteen survived and were followed up when aged between 8 and 36 months. The initial electroencephalogram (EEG) and t

Statistical Analysis of Crests and Maxima in Gaussian Seas

Popular Abstract in Swedish För en god matematisk beskrivning av oregelbundenheten hos verkliga havsvågor måste ett statistiskt synsätt tillämpas. Med tanke på t.ex. design av konstruktionselement i marin teknik är framför allt kännedom om våghöjdens variation, eller med statistisk terminologi, dess fördelning, högst väsentlig. Insamlade mätdata utgör grunden för en realistisk analys; i kombinatioAn important problem in ocean engineering is to find distributions for characteristic wave parameters. For wind-generated water waves at deep water, a Gaussian distribution for the wave-surface elevation is considered a reasonable model. Within the Gaussian assumption, extensions of Rice's formula can be applied to formulate explicit expressions for the distributions in the ergodic, or Palm, sense

Classifying ovarian tumors using Bayesian Multi-Layer Perceptrons and Automatic Relevance Determination: A multi-center study

Ovarian masses are common and a good pre-surgical assessment of their nature is important for adequate treatment. Bayesian Multi-Layer Perceptrons (MLPs) using the evidence procedure were used to predict whether tumors are malignant or not. Automatic Relevance Determination (ARD) is used to select the most relevant of the 40+ available variables. Cross-validation is used to select an optimal combi

Is correlation dimension a reliable indicator of low-dimensional chaos in short hydrological time series?

The reliability of the correlation dimension estimation in short hydrological time series is investigated using an inverse approach. According to this approach, first predictions are made using the phase-space reconstruction technique and the artificial neural networks. The correlation dimension is estimated next independently and is compared with the prediction results. A short hydrological serie

Farmakologiska möjligheter vid hjärnskadebehandling. Rätt läkemedelsval kan optimera rehabiliteringsinsatserna

Acquired brain injuries can lead to cognitive, emotional as well as behavioural sequelae and can have a great impact on the affected person and his or her family. Over the last decade, pharmacological treatment has become an important part of brain injury rehabilitation. There is increasing clinical experience of the use of various drugs affecting neurotransmitters and cerebral function, but the s

Are factors associated with subjective quality of life in people with severe mental illness consistent over time? - A 6-year follow-up study.

Objective To investigate the cross-sectional relationship between subjective quality of life and sociodemographic clinical and social factors over three points of assessment during a 6-year follow-up, and to investigate longitudinal predictors of subjective quality of life. Method We investigated a sample of people with severe mental illness (n = 92), mainly with a psychosis diagnosis, at baseline

Intact and permeabilized cells of the yeast Hansenula polymorpha as bioselective elements for amperometric assay of formaldehyde

Intact and permeabilized yeast cells were tested as the biorecognition elements for amperometric assay of formaldehyde (FA). For this aim, the mutant G 105 (gcr1 catX) of the methylotrophic yeast Hansenula polymorpha with a high activity of AOX was chosen. Different approaches were used for monitoring FA-dependent cell response including analysis of their oxygen consumption rate by the use of a Cl

Ett kvartssekel med föräldragrupper i barnhälsovården - var står vi idag?

En trygg föräldrarelation, präglad av värme och rimliga gränser, är en viktig förutsättning för barns hälsa och välfärd och för att de senare i livet ska kunna samspela förtroendefullt med omgivningen. Inom hälso- och sjukvården finns idag en omfattande verksamhet, exempelvis öppna föräldragrupper, vars syfte är att ge stöd i föräldraskapet. En aktuell rapport från Folkhälsoinstitutet visar att en

Nimisia fuegiae, a new lichen genus and species from Argentina (Parmeliaceae).

Nimisia fuegiae Kärnef. & Thell gen. et sp. nov. is described from Argentinian Tierra del Fuego. The new lichen differs from possibly related groups within the Parmeliaceae in unique anatomical characters, i.e. a medullary layer composed of extremely thick and strongly gelatinized periclinally arranged hyphae and a lower cortex composed of only a few layers of strongly pigmented, rather large

CSF levels of tau, beta-amyloid(1-42) and GAP-43 in frontotemporal dementia, other types of dementia and normal aging

Cerebrospinal fluid (CSF) levels of tau, beta-amyloid(1-42) and growth-associated protein 43 (GAP-43) were studied in patients with frontotemporal dementia (FTD; n = 17), Alzheimer's disease (AD; n = 60), subcortical white-matter dementia (SWD; n = 24), Parkinson's disease (PD; n = 23) and dysthymia (n = 19) and in age-matched controls (n = 32). CSF-tau was significantly increased only in AD, and