Search results

Filter

Filetype

Your search for "*" yielded 531890 hits

On the semiclassical analysis of the ground state energy of the Dirichlet Pauli operator III : magnetic fields that change sign

We consider the semiclassical Dirichlet Pauli operator in bounded connected domains in the plane. Rather optimal results have been obtained in previous papers by Ekholm–Kovařík–Portmann and Helffer–Sundqvist for the asymptotics of the ground state energy in the semiclassical limit when the magnetic field has constant sign. In this paper, we focus on the case when the magnetic field changes sign. W

Practical Considerations for the Use of DREADD and Other Chemogenetic Receptors to Regulate Neuronal Activity in the Mammalian Brain

Chemogenetics is the process of genetically expressing a macromolecule receptor capable of modulating the activity of the cell in response to selective chemical ligand. This chapter will cover the chemogenetic technologies that are available to date, focusing on the commonly available engineered or otherwise modified ligand-gated ion channels and G-protein-coupled receptors in the context of neuro

Uninhibited Institutionalisms

Institutional theory (IT) is a very influential set of approaches in organization studies. There is increasing critique that the set is becoming uninhibited: too broad, dispersed, and confusing. Efforts to rejuvinate the field(s) have led to all-embracing definitions and efforts to account for too much, which makes it difficult to identify what is distinct about the assembly of research. This arti

Reassigning “Modernism” : The Case for Adopting the Concept as a Period Designation in the Study of British Poetry

In academic work on modern British poetry, there is a tacit assumption that any poet belonging to the first rank must needs be a “Modernist”. Consequently, scholars and critics are keen to have poets they admire fit in under the “Modernism” umbrella. That desire has led to an extension of the concept–always notoriously hard to define–to the point of meaninglessness. Proceeding from a conviction th

Extremely large differences in DFT energies for nitrogenase models

Nitrogenase is the only enzyme that can cleave the triple bond in N2, making nitrogen avaiable for other organisms. It contains a complicated MoFe7S9C(homocitrate) cluster in its active site. Many computational studies with density-functional theory (DFT) of the nitrogenase enzyme have been presented, but they do not show any consensus-they do not even agree where the first four protons should be

The age and abundance structure of the stellar populations in the central sub-kpc of the Milky Way

The four main findings about the age and abundance structure of the Milky Way bulge based on microlensed dwarf and subgiant stars are: (1) a wide metallicity distribution with distinct peaks at [Fe/H] = -1.09, -0.63, -0.20, +0.12, +0.41; (2) a high fraction of intermediate-age to young stars where at [Fe/H] > 0 more than 35 % are younger than 8 Gyr, (3) several episodes of significant star formati

Time shift between net and gross CO2 uptake and growth derived from tree rings in pine and spruce

Key message: A 6–9 month backward time shift of the carbon uptake gave the highest correlation between annual biomass increment and carbon uptake in this old even aged forest. Abstract: Plants’ carbon uptake and allocation to different biomass compartments is an important process for both wood production and climate mitigation. Measurements of the net ecosystem carbon dioxide exchange between ecos

Galactic Archeology with 4MOST

4MOST is a new wide-field, high-multiplex spectroscopic survey facility for the VISTA telescope of ESO. Starting in 2022, 4MOST will deploy 2400 fibres in a 4.1 square degree field-of-view using a positioner based on the tilting spine principle. In this contribution we give an outline of the major science goals we wish to achieve with 4MOST in the area of Galactic Archeology. The 4MOST Galactic Ar

Detailed near-IR stellar abundances of red giants in the Inner Bulge and Galactic Center

Owing to their extreme crowding and high and variable extinction, stars in the Galactic Bulge, within ±2° of the Galactic plane, and especially those in the Nuclear Star Cluster, have only rarely been targeted for an analyses of their detailed abundances. There is also some disagreement about the high end of the abundance scale for these stars. It is now possible to obtain high dispersion, high S/

Ecological interventions in agricultural landscapes - scale matters!

The Common Agricultural Policy (CAP) affects about half of the land area of the EU and allocates close to 40% of the EU’s budget. Consequently, CAP has great potential to guide land management decisions towards multifunctional agricultural landscapes supporting both commodity production and biodiversity. The 2015 “greening” reform was an attempt to increase the multifunctionality of agricultural l

Impacts of the CAP’s environmental policy instruments on farm structures, agricultural incomes and public goods

We examined farmers’ costs of providing public goods under the Common Agricultural Policy (CAP) and the expected impacts of the 2015 CAP “greening” reform on regional development and provisioning of public goods. Less than half of CAP spending Before the reform was justifiable in terms of the delivery of specific public goods; and predicted benefits from greening are low. We recommend re-allocatin

Bone mineral density and osteoporosis in heart transplanted patients : A single-center retrospective study at Skåne University Hospital in Lund 1988-2016

Bone mineral density (BMD) in the lumbar spine and femoral neck, the incidence of osteoporosis, and survival up to 10 years after heart transplantation (HT) were investigated in 169 patients who underwent HT at Skåne University Hospital in Lund, Sweden, 1988-2016. Within the first year post-transplantation, mean (SD) BMD decreased by 3.9% (10.1) (P < 0.001) and 9.0% (10.5) (P < 0.001) in the lumba

Governance approaches to address scale issues in biodiversity management – current situation and ways forward

Protecting biodiversity and enhancing the provision of ecosystem services are key challenges for managing European agricultural landscapes. However, current approaches as implemented in the Common Agricultural Policy (CAP) of the European Union (EU) have been limited in their effectiveness to deliver positive biodiversity outcomes. To improve this situation, it is important to consider not only in

Substituted polyfluoroaryl interactions with an arginine side chain in galectin-3 are governed by steric-, desolvation and electronic conjugation effects

In the β-d-galactopyranoside-binding protein galectin-3, synthetic inhibitors substituted at the 3-position of a thiodigalactoside core cause the formation of an aglycone binding pocket through the displacement of an arginine residue (Arg144) from its position in the apoprotein. To examine in detail the role of different molecular interactions in this pocket, we have synthesized a series of nine 3

Moisture Sensitivity of Asphalt Mixtures using Cycling Pore Pressure Conditioning

One of the major causes of premature failure in asphalt pavements is moisture damage. Asphalt mixtures designed without considering climate impacts may suffer from durability problems caused by movement of water inside the asphalt mixture. Rolling traffic over wet pavement builds up pore pressure in the mixture, which will consequently accelerate deterioration. The objective of the study was to as

Diversity of avian blood parasites in wild passerines in Serbia with special reference to two new lineages

Avian haemosporidians are vector-transmitted blood parasites that are distributed worldwide, abundant in many bird families and well studied across Europe and North America. Since avian haemosporidians have been poorly examined in the Palearctic migratory flyways of the Western Balkans, the goal of this study was to investigate which species of three haemosporidian genera, Plasmodium, Haemoproteus

Validation of standardized creatinine and cystatin C GFR estimating equations in a large multicentre European cohort of children

Background: Most validations of paediatric glomerular filtration rate (GFR) estimating equations using standardized creatinine (CR) and cystatin C (CYS) assays have comprised relatively small cohorts, which makes accuracy across subgroups of GFR, age, body mass index (BMI) and gender uncertain. To overcome this, a large cohort of children referred for GFR determination has been established from se