Forschungszentrum Jülich

A Co II/III oxo-carboxylate cluster featuring a Lindqvist core

Abstract A nonanuclear mixed-valent coordination cluster, isolated as [CoIII3CoII6(µ6-O)(piv)7(thmp)4(MeCN)2(H2O)]·4(MeCN) (1), forms in a one-pot reaction of cobalt(II) pivalate and 1,1,1-tris(hydroxymethyl)propane (H3thmp) in acetonitrile solution. Single-crystal X-ray diffract...

The Host‐Guest Assemblies of Metal–Organic Frameworks and Protic Ionic Liquids With ZIF‐8 and [Dema][TfO] – Structural Response and Ionic Conductivity

ABSTRACT The synergy between ionic liquids (ILs) and metal–organic frameworks (MOFs) has attracted considerable attention because of future applications as a tailor‐made hybrid ionic conductor. The incorporation of ILs into MOFs cages has led to the development of a novel type of...

Understanding the near-threshold structures in $$e^+e^-$$ annihilation from a unified $$N\bar{N}$$-interaction perspective

Abstract Near-threshold structures have been observed in the cross sections for $$e^+e^-\rightarrow p\bar{p}$$ e + e - → p p ¯ , $$e^+e^-\rightarrow n\bar{n}$$ e + e - → n n ¯ , and several non-baryonic final states in the vicinity of the $$N\bar{N}$$ N N ¯ thresholds. We investi...

Grain boundary complexions stabilize Mg3Sb2-based thermoelectric devices with superior performance

Grain boundary complexions stabilize Mg 3 Sb 2 -based thermoelectric devices with superior performanceGraphical abstract Highlights • Ga-rich grain boundary complexions block Mg-diffusion channels • Mg 3 Sb 2 materials stabilize at 718 K for over 80 h• Single-leg device shows 13....

Fecal Aβ and tau aggregates are elevated in cognitive impairment and reveal peripheral proteopathic alterations

Abstract Background Aggregation of amyloid-β (Aβ) and tau is central to Alzheimer’s disease (AD) pathogenesis and forms the basis of established cerebrospinal fluid (CSF) and imaging biomarkers. However, increasing evidence suggests that AD involves systemic processes beyond the...

Structure-function coupling reveals hemisphere-specific network reorganization after stroke

MRI is an excellent tool for monitoring functional and structural network reorganization after brain injury and may provide biomarkers for treatment stratification and novel neuromodulatory interventions. In ischemic stroke, functional network changes, particularly within the con...

Selective dependency of CALR-mutant myeloproliferative neoplasms on TYK2 signaling

Abstract Myeloproliferative neoplasms (MPN) are driven by the oncoproteins JAK2V617F, mutant calreticulin (CALR), and mutant thrombopoietin receptor (TPOR; MPL), all of which activate JAK/STAT signaling. While JAK2 signaling is engaged in all MPNs, TYK2 is dispensable for JAK2V61...

From Closed to Mighty: How GTP-Induced Allosteric Dynamics, Dimerization, and Membrane Binding Transform a Bacterial Dynamin-like Protein

Abstract Dynamins, crucial GTPases involved in membrane remodeling, play key roles in processes like endocytosis and membrane fission. While their importance is well-established, the precise dynamics of their conformational changes remain unclear. This study investigates the bact...

A Descriptor for Non‐Arrhenius Ion Transport Enables Design of Sulfide Superionic Conductors

ABSTRACT Non‐Arrhenius ion transport is increasingly observed in solid electrolytes but remains difficult to compare across materials or use in screening. A curated database of 867 conductivity‐temperature entries from thio‐LISICON and LGPS‐type sulfides is used to introduce Meye...

A Descriptor for Non‐Arrhenius Ion Transport Enables Design of Sulfide Superionic Conductors

ABSTRACT Non‐Arrhenius ion transport is increasingly observed in solid electrolytes but remains difficult to compare across materials or use in screening. A curated database of 867 conductivity‐temperature entries from thio‐LISICON and LGPS‐type sulfides is used to introduce Meye...

Polyoxymethylene ethers as attractive hydrogen transport vectors? - Concept evaluation and steam reforming investigations

The efficient and safe transportation of renewable hydrogen remains a major challenge. Polyoxymethylene dimethyl ethers (OMEs) might be promising hydrogen transport vectors due to their liquid state at ambient conditions, low toxicity and high technical hydrogen capacity. However...

Negative effects of increased ozone concentrations and heat stress on bumblebees are exacerbated by microplastics

Abstract The intensity of environmental stressors increases due to global change. Under natural conditions, insect pollinators are experiencing multiple stressors simultaneously which may exacerbate the negative effects of individual stressors. Using a fully crossed factorial des...

Context-dependent siderophore exploitability shapes microbial community structure

Siderophores are classically viewed as shared iron-scavenging public goods, yet their ecological roles in multispecies communities remain incompletely understood. Here, we establish a synthetic microbial community to dissect how different siderophores, their uptake compatibility...

Deformable precipitates locally modify fault-mediated plasticity for strength-ductility synergy

Precipitates in structural alloys are conventionally understood as passive obstacles to dislocation motion. Here we show that semi-coherent hexagonal close-packed precipitates in a low-stacking-fault-energy Ni50Co30Ru20 multi-principal element alloy cooperate with planar-fault pl...

CO2 Electrolysis Paired with Glycerol Oxidation on Transition-Metal Single-Atom Catalysts

Abstract Pairing the carbon dioxide reduction process with the electrocatalytic oxidation of glycerol (GOR), instead of the typically applied oxygen evolution reaction, can substantially decrease the cell voltage while forming high-value products at both electrodes. In this contr...

Cross-sectional relationships between memory scores and neurodegeneration biomarkers in patients with suspected cognitive impairment

INTRODUCTION: We aimed to examine whether additional metrics derived from the CERAD Word List Memory Test (WLMT) such as acquisition patterns, error frequencies, and consolidation efficiency, are associated with cerebrospinal fluid (CSF) biomarkers of amyloid and tau pathology, a...

Operational Degradation of Flooded Lead–Acid Storage Under Frequency Containment Reserve: Long-Term Evidence from a Hybrid Multi-Technology BESS

Flooded lead–acid batteries continue to operate in utility-scale battery energy storage systems (BESSs), yet their long-term degradation under grid-frequency regulation remains poorly characterized by field evidence. This paper presents an eight-year, multi-indicator degradation...

Extending the computational reach of quantum annealing using reverse annealing

Abstract Quantum annealing is a promising heuristic for combinatorial optimization, but on current hardware its solution quality degrades for larger and more complex problems due to noise and small energy gaps. Reverse annealing has been established as a refinement strategy, yet...

Multiscale characterization of cortical signatures in positive and negative schizotypy:a worldwide ENIGMA study

Positive and negative schizotypy reflect distinct patterns of subclinical traits in the general population associated with neurodevelopmental and schizophrenia-spectrum pathologies. Yet, a comprehensive characterization of the unique and shared neuroanatomical signatures of these...

A single-amino-acid cleavage controls global mitochondrial complex integrity

Abstract Mitochondrial proteostasis depends on precise N-terminal processing of imported precursor proteins. Defects in this maturation step are implicated in disease, yet the functional impact in humans remains unclear. Here we show that the intermediate cleaving peptidase ICP55...