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The surface charge density of C-S-H particles appears to be one of the key parameters for predicting the cohesion strength, understanding the ion retention, the pollutant leakage, and admixture adsorption in hydrated cement pastes. This paper presents a Monte Carlo simulation of the surface-ions interactions that permits the prediction of surface charge density (sigma), electrokinetic potential (z
Biomolecular motors offer self-propelled, directed transport in designed microscale networks and can potentially replace pump-driven nanofluidics. However, in existing systems, transportation is limited to the two-dimensional plane. Here we demonstrate fully one-dimensional (1D) myosin-driven motion of fluorescent probes (actin filaments) through 80 nm wide, Al2O3 hollow nanowires of micrometer le
Recension av Axel Odelberg: Med kungen som verktyg. Historien om försvarsstriden, borggårdskrisen och Sven Hedin.
The book starts in the archaeological excavations at Hovdala castle in northern Skåne. From the results emerging fråm the excavation a journey in time and space leads to a migration period bigfarm at the shore of the Finja lake.. This leads to an analysis of the colonisation and developement of the area up to the 17:th century when the castle was burned by the swedish king Gustavus II.
Granular GaAs:(Mn,Ga)As films were prepared by annealing the Ga0.92Mn0.08As/GaAs layer grown by the MBE method at low temperature. The annealing was performed at 500 or 600 degrees C. It is commonly accepted that this processing should result in formation of cubic zinc blende or hexagonal MnAs inclusions depending on the temperature. We demonstrate that such a priory assumption is not justified. T
We tested the habitat filtering hypothesis by measuring the phylogenetic structure in marine bacterial communities before and after experimentally induced stress. The habitat filtering hypothesis predicts that phylogenetic clustering (mean relatedness) should increase as the environment becomes suitable for only a subset of the original community. We show that community composition and phylogeneti
Photon time-of-flight (PTOF) spectroscopy enables the estimation of absorption and reduced scattering coefficients of turbid media by measuring the propagation time of short light pulses through turbid medium. The present investigation provides a comparison of the assessed absorption and reduced scattering coefficients from PTOF measurements of intralipid 20% and India ink-based optical phantoms c
Ostreopsis ovata is a benthic dinoflagellate that produces palytoxin and its analogues. Since the end of the 1990s, toxic blooms of O. ovata have been recorded in many tropical and temperate marine waters. These blooms often kill benthic invertebrates and cause health problems for humans. We hypothesize that increases in seawater temperature might induce these blooms. A strain of O. ovata isolated
Background: Health care providers in many countries have delivered interventions to improve physical activity levels among their patients. Thus far, less is known about the population's interest to increase their physical activity levels and their opinion about the health care provider's role in physical activity promotion. The aims of this paper were to investigate the self-reported physical acti
Elastic simulations of single-crystal copper nanobeams, of different cross section sizes and with crystallographic orientations [100] and [110] along their length directions, have been performed applying tensile mechanical loading. The molecular dynamics code LAMMPS was employed for the simulations. The Poisson's ratio, which is one of the fundamental measures of the elastic deformation behaviour
This paper explores the effects of communication in market entry games experimentally. It is shown that communication increases coordination success substantially and generate inferior outcomes for consumers when market entry costs are symmetric. Such effects are not observed when costs are asymmetric, since asymmetries provide a tacit coordination cue used by experienced players (as a substitute
Background. Most survival studies of the elderly population have set their baselines for first examinations between 60 and 80 years. The rapidly increasing numbers of exceptionally old persons call for knowledge about determinants of exceptional survival. Methods. The Swedish Centenarian Study followed 100 centenarians from the age of 100 to death of the entire cohort, by age I I I years. A biomed
Background: There is a need for a rapid and cost-effective evaluation of the effects of different human papillomavirus (HPV) vaccination strategies. Sexually active adolescents are a preferred target group for monitoring, as effects on HPV prevalence would be measurable shortly after implementation of vaccination programs. Methods: The Swedish Chlamydia trachomatis testing program offers free Chla
Projekt Turnstone är ett samverkansprojekt delvis finansierat av Europeiska kommissionen. Projektet är ett initiativ av Stockholmspolisens gränsbevakningsenhet. Samverkanspartners i projektet är Svenska Kustbevakningen, Region Nord öst; Helsingforspolisen; Gränsbevakningsväsendet, Finland; Polis och Gränsbevakningen i Estland; Statliga Gränsbevakningen, Lettiska republiken; och den Statliga GränssProject Turnstone is a collaborative project funded in part by the European Commission. The project is an initiative by the Stockholm Police. Collaborating partners in the project are the Swedish Coast Guard, Region Northeast; the Helsinki Police; the Gulf of Finland Coast Guard District; the Police and Border Guard Board in Estonia; the State Border Guard of the Republic of Latvia; and the State
P>The structure of GaMnAs nanowires (NW) with nominal Mn concentration of up to 7 at% was investigated by transmission electron microscopy. The (Ga,Mn)As NW were grown on epiready GaAs(001) n-type wafers by molecular beam epitaxy. The crystal structure of the NW was determined to be zinc-blende. NW with Mn concentrations lower than 5 at% grow along the << 111 >> direction. NW with higher Mn concen
The idea of a usable methodology, one which will both retain the idea of 'a subject' at the heart of research and also recognize that in historical research the researcher necessarily has to work with textual remains, is discussed. Piecing this together is explored in relation to researching correspondences and other archival materials relating to two women who were fin de siecle prostitutes and a
Nowadays, soil diversity is accessed at molecular level by the total DNA extraction of a given habitat. However, high DNA yields and purity are difficult to achieve due to the co-extraction of enzyme-inhibitory substances that inhibit downstream applications, such as PCR, restriction enzyme digestion, and DNA ligation. Therefore, there is a need for further development of sample preparation method
Pulsed electric fields in combination with vacuum infusion have been utilized to impregnate cells with trehalose, aiming at substantially improving the freezing tolerance of spinach leaves. Spinach samples were first treated with ten trains of bi-polar, rectangular electric field pulses with a nominal electric field strength of 580 V/cm and immediately immersed in a 40% (w/w) solution of trehalose
Background: The relationship between Helicobacter pylori infection and pancreatic cancer has been investigated in three previous studies with contradictory results. The aim of the present study was to investigate the association between H. pylori seropositivity and the risk for pancreatic cancer in a nested case-control study within a population based cohort. Methods: Selected birth- year cohorts
