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Influence of Internal DNA Pressure on Stability and Infectivity of Phage λ.

Viruses must remain infectious while in harsh extracellular environments. An important aspect of viral particle stability for double-stranded DNA viruses is the energetically unfavorable state of the tightly confined DNA chain within the virus capsid creating pressures of tens of atmospheres. Here, we study the influence of internal genome pressure on the thermal stability of viral particles. Usin

Characterizing the high-velocity stars of RAVE: the discovery of a metal-rich halo star born in the Galactic disc

We aim to characterize high-velocity (HiVel) stars in the solar vicinity both chemically and kinematically using the fourth data release of the RAdial Velocity Experiment (RAVE). We used a sample of 57 HiVel stars with Galactic rest-frame velocities larger than 275 km s(-1). With 6D position and velocity information, we integrated the orbits of the HiVel stars and found that, on average, they reac

Contrasting changes in taxonomic, phylogenetic and functional diversity during a long-term succession: insights into assembly processes

1. Theory predicts that the processes generating biodiversity after disturbance will change during succession. Comparisons of phylogenetic and functional (alpha and beta) diversity with taxonomic diversity can provide insights into the extent to which community assembly is driven by deterministic or stochastic processes, but comparative approaches have yet to be applied to successional systems. 2.

Exploring security effects on transport performance

The purpose of this investigation is to learn the effects of security on transport performance. The methodology is based on the analysis of multiple case studies, where data is collected by means of observations, focus groups, unstructured and semi-structured interviews. The findings from the empirical data seem to show that security measures may cause lower operational performance. Therefore, thi

Three decades of heart transplantation in Scandinavia: long-term follow-up

Aim Heart transplantation (HTx) has become a standard treatment for patients with end-stage heart disease. The aim of this study was to report the long-term outcome after HTx in Scandinavia. Methods and results During the period, 1983-2009,2333 HTxs were performed in 2293 patients (mean age 45 +/- 16 years, range 0-70,78% mate). The main indications for HTx were non-ischaemic cardiomyopathy (50%),

Cost-Effectiveness Models for Chronic Obstructive Pulmonary Disease: Cross-Model Comparison of Hypothetical Treatment Scenarios

Objectives To compare different chronic obstructive pulmonary disease (COPD) cost-effectiveness models with respect to structure and input parameters and to cross-validate the models by running the same hypothetical treatment scenarios. Methods COPD modeling groups simulated four hypothetical interventions with their model and compared the results with a reference scenario of no intervention. T

Reversible α-Hydrogen and α-Alkyl Elimination in PC(sp(3) )P Pincer Complexes of Iridium.

Despite significant progress in recent years, the cleavage of unstrained C(sp(3) )C(sp(3) ) bonds remains challenging. A CC coupling and cleavage reaction in a PC(sp(3) )P iridium pincer complex is mechanistically studied; the reaction proceeds via the formation of a carbene intermediate and can be described as a competition between α-hydrogen and α-alkyl elimination; the latter process was observ

Total, inelastic and (quasi-)elastic cross sections of high energy pA and γ$^{⋆}$ A reactions with the dipole formalism

In order to understand the initial partonic state in proton-nucleus and electron-nucleus collisions, we investigate the total, inelastic, and (quasi-)elastic cross sections in pA and gamma-A collisions, as these observables are insensitive to possible collective effects in the final state interactions. We used as a tool the DIPSY dipole model, which is based on BFKL dynamics including non-leading

Distribution and variation of indoor temperatures in apartment blocks with individual metering and billing of space heating costs—on building, apartment, and room level

A good indoor thermal climate is important. To reduce energy demands for space heating, individual metering and billing (IMB) for space heating costs is common, though not yet in Sweden. To obtain a better picture of the thermal climate conditions, the distribution of the measured indoor temperatures was investigated in each apartment in 14 apartment blocks with a total of 419 apartments. All bloc

BPI-ANCA and Long-Term Prognosis among 46 Adult CF Patients: A Prospective 10-Year Follow-Up Study.

Introduction. Anti-neutrophil cytoplasmic antibodies specific for bactericidal/permeability-increasing protein (BPI-ANCA) are frequent in CF patients and mainly develop in response to infection with Pseudomonas aeruginosa. It is not known to what extent BPI-ANCA correlates to prognosis. Objectives. To evaluate the prognostic value of IgA-BPI-ANCA, measured at the beginning of the study, for transp

Plasma Melatonin Is Reduced in Huntington's Disease

This study was undertaken to determine whether the production of melatonin, a hormone regulating sleep in relation to the light/dark cycle, is altered in Huntington's disease. We analyzed the circadian rhythm of melatonin in a 24-hour study of cohorts of control, premanifest, and stage II/III Huntington's disease subjects. The mean and acrophase melatonin concentrations were significantly reduced

Structural basis for arabinoxylo-oligosaccharide capture by the probiotic Bifidobacterium animalis subsp lactis Bl-04

Glycan utilization plays a key role in modulating the composition of the gut microbiota, but molecular insight into oligosaccharide uptake by this microbial community is lacking. Arabinoxylo-oligosaccharides (AXOS) are abundant in the diet, and are selectively fermented by probiotic bifidobacteria in the colon. Here we show how selectivity for AXOS uptake is established by the probiotic strain Bif

Capacitive sensing of microcystin variants of Microcystis aeruginosa using a gold immunoelectrode modified with antibodies, gold nanoparticles and polytyramine

We report on the application of an automated and easy-to-use device to directly measure the immunoreactions between adda-specific monoclonal antibodies and microcystins. The antibodies were immobilized on a gold electrode whose surface was modified first with polytyramine and then with gold nanoparticles. The immunoreaction leads to a change in the capacitance of the system. Under optimum conditio

Cronyism and the Determinants of Chairman Compensation

This study examines determinants of chairman compensation in a supervisory board setting and, specifically, the relationship between chairman and CEO compensation. Using a sample of publicly listed firms in Sweden, the study indicates that chairman compensation— despite its fixed nature—is reflective of firm performance via a positive relationship to CEO compensation. As CEO compensation is set be

Application of Texture Analysis to Functional Pulmonary CT Data

It is demonstrated that textural parameters calculated from functional pulmonary CT data have the potential to provide a robust and objective quantitative characterisation of inhomogeneity in lung function and classification of lung diseases in routine clinical applications. Clear recommendations are made for optimum data preparation and textural parameter selection. A new set of platform-independ

Fabrication Process Simulation of a PEM Fuel Cell Catalyst Layer and Its Microscopic Structure Characteristics

The catalyst layers (CLs) in proton exchange membrane fuel cells (PEMFCs) are porous composites of complex microstructures of the building blocks, i.e., Pt nano-particles, carbonaceous substrates and Nafion ionomers. It is important to understand the factors that control the microstructure formation in the fabrication process. A coarse-grained molecular dynamics (CG-MD) method is employed to inves