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Determination of dissociation constants between polyelectrolytes and proteins by affinity capillary electrophoresis

In this manuscript we report the binding affinity between two model proteins, human serum albumin (HSA) and ribonuclease A (RNase A), and negatively charged polyelectrolytes, two different heparin fractions and dextran sulfate, by means of partial filling and affinity capillary electrophoresis. The apparent dissociation constants, Kd, obtained by use of the partial-filling method, between HSA and

The importance of atmospheric deposition, charge and atomic mass to the dynamics of minor and rare elements in developing, ageing, and wilted leaves of beech (Fagus sylvatica L.)

The amounts of sixty elements in developing, maturing, senescent and wilting leaves, and in the wintering dead leaves attached to the branches, are reported for a beech (Fagus sylvatica) forest on mor Podzol in south Sweden, a site with no local sources of pollution or geological anomalies. The amounts (contents per leaf) of K (potassium), Rb (rubidium), Cs (caesium), Cu (copper) and P (phosphorus

Outcome of case management based on the strengths model compared to standard care. A randomised controlled trial.

BACKGROUND: The outcome of less intensive case management services, such as the strengths model, is still inconclusive, which suggests a need for more controlled studies. The aim of the present study was to investigate the outcome of a strengths model of case management service (SCM) compared to standard care. METHODS: Seventy-seven clients with a mental illness and a serious impairment in functio

Investigating a computerised test of the Stroop effect extended by inclusion of a third, more difficult task

A validation study of a computerised test recently developed involving the Stroop effect, extended here by inclusion of a third, more difficult test series, is presented. Three groups of men belonging to the Swedish armed forces and adjudged to differ in their qualifications (20, 32, and 19 men of levels 1, 2, and 3, respectively) and a fourth group of 18 men convicted of serious crimes of violenc

Illuminating patients with children up to 18 years of age - A 1-day-inventory study in a psychiatric service

This study reports the possibility of accomplishing a survey in an ordinary psychiatric service organization to identify the children and the adolescents in families with a parent with mental illness and to highlight the number of patients in psychiatric treatment with little or virtually no contact with their minor children. The prevalence of patients being parents to minor children was 36% in th

Impact related changes in mineral properties: Ti-magnetite from basaltic rocks at Lonar crater, India

Samples from vesicular Lonar impactite have been investigated by Mossbauer spectroscopy and SEM in combination with elemental analysis. Observation reveal the new-formation of oxide minerals have occurred with nucleation in particular at the walls of the vesicles interpreted as having formed from condensation of the gas phase having caused the vesicles to form in the first place. Elemental analysi

Analysis of chemically reacting transport phenomena in an anode duct of intermediate temperature SOFCs

The internal reforming and electrochemical reactions appear in the porous anode layer, and may lead to inhomogeneous temperature and gas species distributions according to the reaction kinetics. In this study, a fully three-dimensional calculation method has been further developed to simulate and analyze chemically reacting transport processes in a thick anode duct. The composite duct investigated

Psychosocial work conditions, unemployment, and generalized trust in other people: A population-based study of psychosocial health determinants

The association between psychosocial work conditions, unemployment, and generalized trust was investigated. The health survey in Skane is a cross-sectional postal questionnaire study with a 59% participation rate. A total of 5,180 persons that belonged to the work force and the unemployed were included. Logistic regression models were used to investigate the associations between psychosocial facto

Electrical characterization of thin InAs films grown on patterned W/GaAs substrates

InAs has been grown on W-GaAs patterned substrates using metal organic vapor phase epitaxy. It is shown that the W pattern guides the nucleation of the InAs on the GaAs substrate and that the islands formed may be used to embed metal features in a hybrid InAs/GaAs structure. A lower resistance (factor of 2) was measured for the hybrid structures as compared to reference structures. The reduction i

Parental care and adaptive brood sex ratio manipulation in birds.

Under many circumstances, it might be adaptive for parents to bias the investment in offspring in relation to sex. Recently developed molecular techniques that allow sex determination of newly hatched offspring have caused a surge in studies of avian sex allocation. Whether females bias the primary brood sex ratio in relation to factors such as environmental and parental quality is debated. Progre

A new distinguisher for clock controlled stream ciphers

In this paper we present a distinguisher targeting towards irregularly clocked filter generators. The attack is applied on the irregularly. clocked stream cipher called LILI-II. LILI-II is the successor of the cipher LILI-128 and its design was published in [1]. There have been no known attacks better than exhaustive key search on LILI-II. Our attack is-the first of this kind that distinguishes th

Acrylamide in food: mechanism of formation and influencing factors during heating of foods

Background: In April 2002, the Swedish National Food Administration and a scientific group at the University of Stockholm jointly announced that they had shown acrylamide to be formed during the preparation of food and found it to occur in many foodstuffs. These new findings were clearly of concern to many types of industrial food processing as well as to home cooking. The Swedish Food Federation

Stable algorithm for the stress field around a multiply branched crack

We present an algorithm for the computation of the stress field around a branched crack. The algorithm is based on an integral equation with good numerical properties. Our equation is obtained through a left regularization of an integral equation of Fredholm's first kind. Complex valued functions involving repeated products of square roots appear in the regularization. A new and effective scheme f

Palaeoenvironment and ecology of the middle Cretaceous Grebenka flora of northeastern Asia

The Grebenka flora, from the main exposure of the Albian-Cenomanian Krivorechenskaya Formation in northeastern Russia, represents a range of plant communities from pioneer to mature forest that grew close to the mid-Cretaceous North Pole (> 72degreesN). The diversity of this flora is dominated by angiosperms followed by conifers, ferns and other plant groups. The age is constrained by Ar-40/Ar-39