Sökresultat

Filtyp

Din sökning på "*" gav 535475 sökträffar

Structural studies of hydrated samples of amorphous calcium phosphate and phosphoprotein nanoclusters.

There are abundant examples of nanoclusters and inorganic microcrystals in biology. Their study under physiologically relevant conditions remains challenging due to their heterogeneity, instability, and the requirements of sample preparation. Advantages of using neutron diffraction and contrast matching to characterize biomaterials are highlighted in this article. We have applied these and complem

Förlåtelse, försoning och oförsonlighet i överlevandes berättelser efter kriget i Bosnien

I denna artikel analyseras berättelser av 27 överlevande efter kriget i Bosnien och Hercegovina. Artikelns syfte är att dels analysera markeringar för försoning och oförsonlighet, dels beskriva de försoningsvillkoren som aktualiseras i berättelser. Den interaktiva dynamiken under kriget konstruerar försoningen efter kriget som förbunden med krigstiden. Berättelser om försoning blir en arena för olIn this article I analyze verbally portrayed experiences of 27 survivors from the 1990s' war in Bosnia and Herzegovina. One aim of the article is to analyze markers for reconciliation and implacability, the second is to describe the terms for reconciliation which are actualized in those stories. The interactive dynamics, which occurred during the war, make the post-war reconciliation wartime assoc

Mid-rapidity anti-baryon to baryon ratios in pp collisions at root s=0.9, 2.76 and 7 TeV measured by ALICE

The ratios of yields of anti-baryons to baryons probes the mechanisms of baryon-number transport. Results for (p) over bar /p, (Lambda) over bar/Lambda, (Xi) over bar (+)/(Xi) over bar (-) and (Omega) over bar (+)/(Omega) over bar (-) in pp collisions at root s = 0.9, 2.76 and 7 TeV, measured with the ALICE detector at the LHC, are reported. Within the experimental uncertainties and ranges covered

Online Piracy, Anonymity and Social Change – Deviance Through Innovation

This article analyses current trends in the use of anonymity services among younger Swedes (15-25) and focuses on individuals engaging in illegal file sharing in order to better understand the rationale behind both file sharing as well as online anonymity, especially in relation to enforcement of copyright. By comparing the findings of a survey conducted on three different occasions (early 2009, l

Inventering av vita fläckar i norra Lapplands skogsland

An inventory of vascular plants in the poorly known forested lowland parts of the provinces of Lule and Torne lappmark has been started. The purpose of the project is to gather distributional data for a forthcoming Swedish atlas of vascular plants. Field work has so far been carried out in the southeastern part of Lule lappmark, from which preliminary results are given.

Rosiglitazone counteracts palmitate-induced beta-cell dysfunction by suppression of MAP kinase, inducible nitric oxide synthase and caspase 3 activities.

Chronic exposure of pancreatic islets to elevated levels of palmitate leads to beta-cell dysfunction. We examined possible involvement of mitogenactivated protein kinases (MAPKs) and caspase-3 in palmitate-induced beta-cell dysfunction and tested the influence of the anti-diabetic drug rosiglitazone (ROZ). Palmitate amplified glucose-stimulated augmentation of intracellular free calcium ([Ca(2+)](

Assessment of photon migration in scattering media using heterodyning techniques with a frequency modulated diode laser.

A novel technique for studying photon propagation in scattering media is proposed and demonstrated, as is believed, for the first time. Photons propagating through the medium, from a frequency-ramped single-mode diode laser, meet a reference beam from the same source, at a common detector, and beat frequencies corresponding to various temporal delays are observed by heterodyne techniques. Fourier

Structure of flocs of latex particles formed by addition of protein from Moringa seeds

Proteins extracted from the seeds of Moringa trees are effective flocculents for particles dispersed in water and are attractive as a natural and sustainable product for use in water purification. Studies with a model system consisting of polystyrene latex particles have shown that the protein adsorbs to the surface and causes flocculation as unusually dense aggregates. Small-angle neutron scatter

Semiblind Spectrum Balancing for DSL

Digital subscriber lines (DSLs) technology is vastly used for high-speed data transmission. Crosstalk is one of the main problems in DSL. The research community has done extensive work on how to optimize spectrum allocation across DSL frequencies and mitigate crosstalk, a subject that has been called dynamic spectrum management (DSM). This text presents a novel DSM solution, referred to as semibli

The Impact of Developing Social Perspective-taking Skills on Emotionality in Middle and Late Childhood

A sample of 209 children was followed longitudinally to examine the impact of growing perspective-taking skills on positive and negative emotionality in middle and late childhood. Perspective-taking skills were assessed through interviews. Teachers rated children's emotional reactivity and capacity to regain a neutral state following emotional arousal. Analyses of contemporaneous data revealed tha

Effect of pulsed electric field on the germination of barley seeds

This study explores metabolic responses of germinating barley seeds upon the application of pulsed electric fields (PEE). Malting barley seeds were steeped in aerated water for 24 h and PEF-treated at varying voltages (0 (control), 110, 160, 240, 320, 400 and 480 V). The seeds were then allowed to finish germination in saturated air. It is shown that exposure of germinating barley to PEE affects r

Stroke: Working Toward a Prioritized World Agenda

Background and Purpose-The aim of the Synergium was to devise and prioritize new ways of accelerating progress in reducing the risks, effects, and consequences of stroke. Methods-Preliminary work was performed by 7 working groups of stroke leaders followed by a synergium (a forum for working synergistically together) with approximately 100 additional participants. The resulting draft document had

Study on nanocrystalline Cr2O3 films deposited by arc ion plating: II. Mechanical and tribological properties

In this work, the influence of substrate bias voltage on the microhardness, adhesive strength, friction coefficient, and wear rate of AIP Cr2O3 films deposited on AISI 304 stainless steel substrates was investigated systematically. In the meantime, the wear failure mechanism of AIP Cr2O3 films in dry sliding contact was also analyzed and discussed. The results showed that the mechanical properties

NADPH-dependent thioredoxin reductase and 2-Cys peroxiredoxins are needed for the protection of Mg–protoporphyrin monomethyl ester cyclase

Abstract The chloroplast-localized NADPH-dependent thioredoxin reductase (NTRC) has been found to be able to reduce hydrogen peroxide scavenging 2-Cys peroxiredoxins. We show that the Arabidopsis ntrc mutant is perturbed in chlorophyll biosynthesis and accumulate intermediates preceding protochlorophyllide formation. A specific involvement of NTRC during biosynthesis of protochlorophyllide is indi

Novel PRRT2 mutation in an African-American family with paroxysmal kinesigenic dyskinesia

Background: Recently, heterozygous mutations in PRRT2 (Chr 16p11.2) have been identified in Han Chinese, Japanese and Caucasians with paroxysmal kinesigenic dyskinesia. In previous work, a paroxysmal kinesigenic dyskinesia locus was mapped to Chr 16p11.2 - q11.2 in a multiplex African-American family. Methods: Sanger sequencing was used to analyze all four PRRT2 exons for sequence variants in 13 p

Statin use and risk of depression: a Swedish national cohort study

Background: Statin medications, used to prevent heart disease by reducing cholesterol, also reduce inflammation and protect against oxidative damage. As inflammation and oxidative stress occur in depression, there is interest in their potential to reduce depression risk. We investigated whether use of statin medications was associated with a change in the risk of developing depression in a very la

Analysis of the Human Prostate-Specific Proteome Defined by Transcriptomics and Antibody-Based Profiling Identifies TMEM79 and ACOXL as Two Putative, Diagnostic Markers in Prostate Cancer.

To better understand prostate function and disease, it is important to define and explore the molecular constituents that signify the prostate gland. The aim of this study was to define the prostate specific transcriptome and proteome, in comparison to 26 other human tissues. Deep sequencing of mRNA (RNA-seq) and immunohistochemistry-based protein profiling were combined to identify prostate speci