Sökresultat

Filtyp

Din sökning på "eneba credit fc Visitez le site Buyfc26coins.com Site validé par tous pour les FC 26 coins.6MTa" gav 40064 sökträffar

Spatial heterogeneity of soil CO2 efflux at ADVEX site Norunda in Sweden

Denna studie undersöker den rumsliga variationen i markens koldioxid-utflöde (CO2) i en boreal blandskog, huvudsakligen dominerad av tall (Pinus sylvestris L.) och gran (Picea abies L.) i ADVEX experimentsite i Norunda, centrala Sverige. Mätningar av markens CO2 gjordes i 72 collars omkring huvudtornet med hjälp av en LI-6250 infraröd gasanalysapparat kopplad till en hemmagjord mörkkammare. Medelv

Quantum refinement with electron diffraction and X-ray free-electron laser data: comparative study of ribonucleotide reductase dimetal site

Quantum refinement (QR) is an approach in which the empirical restraints used in standard structural refinement to ensure that the details of the structure, e.g. bond lengths and angles, make chemical sense are replaced by more accurate quantum mechanical calculations for a small but interesting part of the structure. QR has previously been used for X-ray and neutron crystallography, cryogenic e

Refugia and post-glacial migration of Nigritella miniata (Orchidaceae): evidence from restriction site-associated DNA sequencing, microsatellite markers, and ecological niche modelling

Nigritella miniata is an alpine orchid species disjunctly endemic to the Eastern Alps and the Southeastern Carpathians. It is thought to have arisen only once through a hybridisation event between now extinct ancestors. Questions of interest are whether N. miniata survived in few or many isolated refugia in the Eastern Alps during the Last Glacial Maximum (LGM), and their relationship with the pop

Brain-derived neurotrophic factor in cerebral ischemia: a quantitative study on surviving and newly formed neurons

Popular Abstract in Swedish Vår forskningsgrupp har tidigare påvisat kraftiga förändringar i genuttryck för neurotrofiner, en familj av tillväxtfaktorer för nervceller, och deras receptorer i kortikala och hippokampala nervceller vid olika hjärnskador. Det är till stora delar okänt vilken funktion neurotrofiner har efter hjärnskador, men neurotrofinsvaret skulle kunna vara en skyddande mekanism ocThis study explores the role of brain-derived neurotrophic factor (BDNF) for neuronal vulnerability and neurogenesis following cerebral ischemia in the rat. Cerebral ischemia results in selective neuronal cell loss in specific brain regions. We here demonstrate the rank order of vulnerability in two regions affected by global forebrain ischemia, i.e., hippocampus and striatum, by combining specifi

Evaluating the Potential of Southampton Carbon Flux Model (SCARF) for Monitoring Terrestrial Gross Primary Productivity Across African Ecosystems

Accurate knowledge about the amount and dynamics of terrestrial gross primary productivity is an important component for understanding of ecosystem functioning and processes. Recently a new diagnostic model, Southampton Carbon Flux (SCARF), was developed to predict terrestrial gross primary productivity at regional to global scale based on a chlorophyll index derived from MERIS data. The model aim

Additive manufacturing of physical assets by using ceramic multicomponent extra-terrestrial materials

Powder Bed Fusion (PBF) is a range of advanced manufacturing technologies that can fabricate three-dimensional assets directly from CAD data, on a successive layer-by-layer strategy by using thermal energy, typically from a laser source, to irradiate and fuse particles within a powder bed.The aim of this paper was to investigate the application of this advanced manufacturing technique to process c

Simultaneous PIV/PH-PLIF, Rayleigh thermometry/OH-PLIF and stereo PIV measurements in a low-swirl-flame

The diagnostic techniques for simultaneous velocity and relative OH distribution, simultaneous temperature and relative OH distribution, and three component velocity mapping are described. The data extracted from the measurements include statistical moments for inflow fluid dynamics, temperature, conditional velocities, and scalar flux. The work is a first step in the development of a detailed lar

NGE006F Hydrogeological Conceptual Models ENG

Kursplaner ENG NGE006F, Hydrogeological Conceptual Models for Groundwater Use and Protection. Characterisation methods and scaling considerations, 4.5 credits Konceptuella hydrogeologiska modeller för tillämpningar inom och skydd av grundvatten. Karakteriseringsmetoder med hänsyn till olika skalor, 4,5 högskolepoäng Third Cycle/Forskarnivå __________________________________________________________

https://www.geology.lu.se/sites/geology.lu.se/files/2023-01/NGE006F%20Hydrogeological%20Conceptual%20Models_ENG.pdf - 2026-06-06

Up-scaling of water use efficiency from leaf to canopy as based on leaf gas exchange relationships and the modeled in-canopy light distribution

Abstract in UndeterminedThe aim of this study was to evaluate the extent to which water use efficiency (WUE) at leaf scale can be used to assess WUE at canopy scale, leaf WUE being assumed to be a constant function of vapor pressure deficit and to thus not be dependent upon other environmental factors or varying leaf properties. Leaf WUE and its variability and dependencies were assessed using lea

Site- and Energy-Selective Low-Energy Electron Emission by X-rays in the Aqueous Phase

Low-energy-electron emission from resonant Auger final states via intermolecular Coulombic decay (RA-ICD) has previously been described as a promising scenario for controlling radiation damage for medical purposes, but it has so far only been observed in prototypical atomic and molecular van der Waals dimers and clusters. Here, we report the experimental observation of RA-ICD in an aqueous solutio

‘It was wonderful, but it is very hard to create a city’: Spatial Practice in Political Organising: Palestinagård as a Site of Counter-Hegemonic Struggle at Lund University

A year after the establishment of the protest camp Palestinagård at Lund’s University in May 2024 and its demolishment by the authorities, the student solidarity movement is continuously engaged in endeavours to get into conversations with the institutions at Lunds University to make their demands heard, as the genocide on the Palestinian population in Gaza is still ongoing. Further, Palestinagård

Feminist Re-appropriations of National and Religious Symbols in Poland’s Strajk Kobiet Protests. Protest Banners as Sites of Meaning-Making

This thesis examines how participant-made banners from the Strajk Kobiet protests in Poland re-appropriated national and religious symbols to challenge cultural narratives and offer alternative visions of Polishness and womanhood. Set against democratic backsliding and a strong state–Church alliance, the study focuses on five photographs from the Archive of Public Protests, selected for their enga

eduTAP – a Concept and System of Digital Identities for proximity on-site service access

Universities offer a variety of services to students, staff, and affiliates, traditionally managed through physical campus cards. However, increasing mobility requirements and the need for secure, interoperable digital identity solutions call for a modernized approach to service access. This paper introduces eduTAP, an open-source concept and software framework that builds on top of digital wallet

Age estimation of wild boar based on molariform mandibular tooth development and its application to seasonality at the Mesolithic site of Ringkloster, Denmark

Age estimation based on the dentition of animal remains is one of the most important methods used for analysis of the demography of past as well as contemporary animal populations by zooarchaeologists and wild game biologists (Wagenknecht 1967; Silver 1969; Morris 1972; Wilson et al. 1982). By constructing age profiles from faunal remains it is possible to study hunting of wild boar and pig husban

Author Correction : Distorted octahedral sites drive early formation and stabilisation of nickel oxyhydroxides in trimetallic nickel–iron–molybdenum oxides (Communications Materials, (2025), 6, 1, (115), 10.1038/s43246-025-00842-y)

Correction to: Communications Materialshttps://doi.org/10.1038/s43246-025-00842-y, published online 5 June 2025 The authors have identified an error related to the discussion of the XPS results in this Article. We incorrectly assigned some XPS features in the Ni 2p spectra to Ni3+ (Figure 7a and 7d), associated to NiOOH. However, the spectra in panel 7a are associated to Ni(OH)2 with an oxidation

Boosting hydrogen transfer catalysis by symmetry breaking of iron site

Hydrogen transfer reactions hold pivotal importance in organic synthesis by enabling selective bond formation, achieving redox-neutral transformations, and advancing sustainable methodologies. However, designing efficient catalytic systems for such reactions under mild conditions persists as a fundamental challenge in green chemistry. In this study, we present a controllable synthesis of defective

A metal binding site in the catalytic subunit of anaerobic ribonucleotide reductase.

A Zn(Cys)4 center has been found in the C-terminal region of the crystal structure of the anaerobic class III ribonucleotide reductase (RNR) from bacteriophage T4. The metal center is structurally related to the zinc ribbon motif and to rubredoxin and rubrerythrin. Mutant enzymes of the homologous RNR from Escherichia coli, in which the coordinating cysteines, conserved in almost all known class I

Heparan sulfate 3-O-sulfotransferase isoform 5 generates both an antithrombin-binding site and an entry receptor for herpes simplex virus, type 1

Heparan sulfate 3-O-sulfotransferase transfers sulfate to the 3-OH position of a glucosamine residue of heparan sulfate (HS) to form 3-O-sulfated HS. The 3-O-sulfated glucosamine residue contributes to two important biological functions of HS: binding to antithrombin and thereby carrying anticoagulant activity, and binding to herpes simplex viral envelope glycoprotein D to serve as an entry recept