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Aqueous solutions of charged spherical macroions with variable dielectric permittivity and their associated counterions are examined within the cell model using a field theory and Monte Carlo simulations. The field theory is based on separation of fields into short- and long-wavelength terms, which are subjected to different statistical-mechanical treatments. The simulations were performed by usin

Using X-ray photoemission spectroscopy (XPS) and scanning tunneling microscopy (STM) we resolve the temperature-, time-, and flake size-dependent intercalation phases of oxygen underneath graphene on Ir(111) formed upon exposure to molecular oxygen. Through the applied pressure of molecular oxygen the atomic oxygen created on the bare Ir terraces is driven underneath graphene flakes. The importanc

We relate the adsorption from mixtures of well-defined poly(amidoamine) (PAMAM) dendrimers of generations 4 and 8 with sodium dodecyl sulfate (SDS) at the air-water interface to the bulk solution properties. The anionic surfactant shows strong attractive interactions with the cationic dendrimers at pH 7, and electrophoretic mobility measurements indicate that the association is primarily driven by

The effect of atomic oxygen adsorption on the structure and electronic properties of monolayer graphite (MG or graphene) grown on Pt(111) and Ir(111) has been studied using X-ray photoelectron spectroscopy, near-edge X-ray absorption fine structure spectroscopy, and scanning tunneling microscopy. For comparison, the adsorption of atomic oxygen on highly oriented pyrolytic graphite has been studied

Challengers, as opposed to defenders,of the status quo ascribe more negative motives for the attitudes of their opponentsand more positive motives to their allies. This may be associated with a heightened social cost involved in challenging the generally considered good and true. Most social issues are associated with ideology, and conservatives display more prejudices than liberals. Hence, it is

Hemolytic uremic syndrome, a life-threatening disease often accompanied by acute renal failure, usually occurs after gastrointestinal infection with Shiga toxin 2 (Stx2)-producing Escherichia coli. Stx2 binds to the glycosphingolipid globotriaosylceramide receptor, expressed by renal epithelial cells, and triggers apoptosis by activating the apoptotic factor Bax. Signaling via the ouabain/Na,K-ATP

Reduced membranous expression of the cytoskeleton-associated protein ezrin has previously been demonstrated to correlate with poor prognosis in urothelial bladder cancer in several independent studies. The present study provides a first description of clinicopathological characteristics of incident urothelial cancers, not only located to the bladder, in the prospective, population-based cohort stu

Work in rodents has demonstrated that progenitor transplantation can achieve limited photoreceptor replacement in the mammalian retina; however, replication of these findings on a clinically relevant scale requires a large animal model. To evaluate the ability of porcine retinal progenitor cells to survival as allografts and integrate into the host retinal architecture, we isolated donor cells fro

PURPOSE. To determine the cellular consequences of retinal detachment in retinoschisin knockout (Rs1-KO) mice, a model for retinoschisin in humans. METHODS. Experimental retinal detachments (RDs) were induced in the right eyes of both Rs1-KO and wild-type (wt) control mice. Immunocytochemistry was performed on retinal tissue at 1, 7, or 28 days after RD with antibodies to anti-GFAP, -neurofilament

The high-resolution Fourier transform infrared spectrum of trans-glyoxal in the gas phase has been recorded in the spectral regions 700-900 cm(-1), 1200-1400 cm(-1), and 1600-1800 cm(-1) with a resolution ranging from 0.0020 to 0.0025 cm(-1). The spectrum displays extensive rotational structures which are assigned to the three fundamental bands upsilon(6) (A(u), 801.5 cm(-1)), upsilon(10) (B-u, 17

The performance of poly(1-trimethylsilyl-1-propyne) (PTMSP)/silica nanocomposites was studied for membranes with a filler content between 0 and 50 wt%. An increase in permeability and a decrease in vapor selectivity was measured with increasing filler content. The free volume sizes and interstitial mesopore sizes of the composites were determined by use of positron annihilation lifetime spectrosco

Popular Abstract in Swedish Arbetslivet är en av de viktigaste delarna i människors livssituation och ett av de viktigaste incitamenten för välfärden i ett samhälle. Stora förändringar har skett för ungdomar beträffande arbetslivet och inträdet i arbetslivet under de senaste decennierna. Bl.a. de stora förändringarna gör att ny kunskap krävs för att ge möjlighet att stärka ungdomarna i deras inträThe aim was to gain knowledge of experiences of unemployment in young adults with special regard to quality of life (QOL) and to highlight work attitudes and related factors among adolescents. Three studies were performed in Kristianstad municipality, Sweden. In Study 1, a questionnaire was sent in 1998 to 264 unemployed young adults (md=22 years, range 20?25) and to a control group of 528 random

We have recently demonstrated, that DNA ejection from bacteriophage I can be partially or completely suppressed in vitro by external osmotic pressure. This suggests that DNA ejection from phage is driven by an internal mechanical force consisting of DNA bending and DNA-DNA electrostatic repulsion energies. In the present work we investigate the extent to which DNA ejection is incomplete at zero os

Remnants of more than 3 million transposable elements, primarily retroelements, comprise nearly half of the human genome and have generated much speculation concerning their evolutionary significance. We have exploited the draft human genome sequence to examine the distributions of retroelements on a genome-wide scale. Here we show that genomic densities of 10 major classes of human retroelements

This article analyzes two planned cities—Belo Horizonte (Brazil) and Bloemfontein (South Africa)—to investigate connectivities across geographies and temporalities and reveal the role of urban planning in racial capitalism. Early works in urban sociology underscore the color line in producing differentiation in capitalist development. But color-blind analyses of capitalism have undermined the role

This study explores the impact of sanctions on the development of second home tourism in the context of a rentier state. The subject was examined with special reference to rural regions of Shemiranat County in Tehran, Iran, where second homes have developed over the past four decades. The results indicating that devaluation of the national currency, caused by the sanctions, led to turmoil in the s

ten-a is one of the two Drosophila genes whose products belong to the Ten M protein family. TheTen-a protein is a type II transmembrane protein. This protein was found to be mainly expressed in the CNSof the embryo and in the compound eye of the pupa. No report about the function of ten-a has beenpublished to date. Here, we showed, in a preliminary report, that ten-a has a function in the developm