1,585 results match your criteria: "ELTE Eotvos Lorand University[Affiliation]"

Knowles Partitioning at the Multireference Level.

J Phys Chem A

October 2024

Laboratory of Theoretical Chemistry, Institute of Chemistry, Faculty of Science, ELTE Eötvös Loránd University, H-1518 Budapest 112, Budapest P.O.B. 32, Hungary.

Article Synopsis
  • A new multireference approach builds on Knowles' recent work to analyze electronic systems with medium correlation levels.
  • It uses a framework known as multiconfiguration perturbation theory (MCPT) to enhance the understanding of these systems.
  • This method aims to improve the accuracy of studying complex electronic interactions in various chemical and physical contexts.
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  • Climate change often leads to habitat shifts for species towards the poles, but other factors also play a significant role in determining species distribution.
  • A study on European forest plants shows that they are more likely to shift westward rather than northward, with westward movements being 2.6 times more common.
  • These shifts are primarily driven by nitrogen deposition and recovery from past pollution, indicating that biodiversity changes are influenced by multiple environmental factors, not just climate change alone.
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Categorizing interaction modes of antimicrobial peptides with extracellular vesicles: Disruption, membrane trespassing, and clearance of the protein corona.

J Colloid Interface Sci

February 2025

Biomolecular Self-assembly Research Group, Institute of Materials and Environmental Chemistry, HUN-REN Research Centre for Natural Sciences, Budapest H-1117, Magyar Tudósok Körútja 2, Hungary. Electronic address:

Article Synopsis
  • Host antimicrobial peptides (AMPs) and extracellular vesicles (EVs) are crucial for the immune system, with evidence showing that EVs can transport AMPs and that some AMPs can remove protein layers from EVs.
  • A study investigated interactions between 26 AMPs and red blood cell-derived vesicles (REVs) using various advanced techniques to categorize the peptides based on their effects.
  • Results indicated that some AMPs like LL-37 effectively eliminate protein layers with little harm to membranes, while others maintain cell-penetrating abilities without significant damage, offering insights into manipulating EVs for specific applications.
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  • ZrTe is a potential topological insulator (TI), yet its topological phase and relationship to its Dirac semimetallic state remain debated in the scientific community.
  • Researchers used a semiclassical multicarrier transport (MCT) model to study the magnetotransport of ZrTe nanodevices under high pressure, up to 2 GPa, revealing important temperature-dependent behavior.
  • Their findings support the idea that the band gap closes and reopens with increasing pressure, indicating a phase transition from weak to strong TI, which aligns with both theoretical calculations and previous studies indicating ZrTe behaves as a weak TI under normal conditions.
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Background: Deficits in mentalizing and attachment occur in the autism and schizophrenia spectrum, and their extended traits in the general population. Parental attachment and the broader social environment highly influence the development of mentalizing. Given the similarities in the symptomatology and neurodevelopmental correlates of autism spectrum disorder (ASD) and schizophrenia (SCH), it is crucial to identify their overlaps and differences to support screening, differential diagnosis, and intervention.

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Objectives: The prevalence of clinical obsessive-compulsive disorder (OCD) is around 1-2% in the population. Questionnaires, such as the OCI-R, are a useful tool in the diagnositc process. The purpose of this study was to develop the Hungarian version of the OCI-R, examine its validity and reliability, and its ability to differentiate between clinical and subclinical OCD.

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Time is a fundamental dimension of our perception and mental construction of reality. It enables resolving changes in our environment without a direct sensory representation of elapsed time. Therefore, the concept of time is inferential by nature, but the units of subjective time that provide meaningful segmentation of the influx of sensory input remain to be determined.

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We present a genome assembly from an individual female (the Hungarian meadow viper; Chordata; Lepidosauria; Squamata; Viperidae). The genome sequence is 1,625.0 megabases in span.

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The W2024 database of the water isotopologue .

Sci Data

September 2024

HUN-REN-ELTE Complex Chemical Systems Research Group, P.O. Box 32, H-1518, Budapest 112, Hungary.

The rovibrational spectrum of the water molecule is the crown jewel of high-resolution molecular spectroscopy. While its significance in numerous scientific and engineering applications and the challenges behind its interpretation have been well known, the extensive experimental analysis performed for this molecule, from the microwave to the ultraviolet, is admirable. To determine empirical energy levels for , this study utilizes an improved version of the MARVEL (Measured Active Rotational-Vibrational Energy Levels) scheme, which now takes into account multiplet constraints and first-principles energy-level splittings.

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A unique compound (compound ) with structural features including an unprecedented tridentate-bridging coordination mode of permanganate ions and an eight-coordinated (rhombohedral) κ-chlorido and tridentate permanganato ligand in a potassium complex containing coordination polymer (Co(NH)][(K(κ-Cl)(μ-(κ-O,O',O″-MnO))) with isolated regular octahedral hexamminecobalt(III) cation was synthesized with a yield of >90%. The structure was found to be stabilized by mono and bifurcated N-H∙∙∙Cl and N-H∙∙∙O (bridging and non-bridging) hydrogen bonds. Detailed spectroscopic (IR, far-IR, and Raman) studies and correlation analysis were performed to assign all vibrational modes.

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Approximately 30% of patients with epilepsy are drug-refractory. There is an urgent need to elucidate the exact pathophysiology of different types of epilepsies and the mechanisms of action of both antiseizure medication and metabolic therapies to treat patients more effectively and safely. For example, it has been demonstrated that exogenous ketone supplement (EKS)-generated therapeutic ketosis, as a metabolic therapy, may decrease epileptic activity in both animal models and humans, but its exact mechanism of action is unknown.

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: Without mechanical cleaning, gingivitis can develop within three weeks. The first clinical sign is bleeding on positive probing. The accumulation of dental biofilm triggers an inflammatory gingival response.

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Flower Visitation through the Lens: Exploring the Foraging Behaviour of with a Computer Vision-Based Application.

Insects

September 2024

Ce3C-Centre for Ecology, Evolution and Environmental Changes, Azorean Biodiversity Group, CHANGE-Global Change and Sustainability Institute, University of the Azores, 9700-042 Angra do Heroísmo, Portugal.

To understand the processes behind pollinator declines and for the conservation of pollination services, we need to understand fundamental drivers influencing pollinator behaviour. Here, we aimed to elucidate how wild bumblebees interact with three plant species and investigated their foraging behaviour with varying flower densities. We video-recorded in 60 × 60 cm quadrats of , , and in urban areas of Terceira (Azores, Portugal).

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Mg-Y-Zn-Al alloys processed by the rapidly solidified ribbon consolidation (RSRC) technique are candidate materials for structural applications due to their improved mechanical performance. Their outstanding mechanical strength is attributed to solute-enriched stacking faults (SESFs), which can form cluster-arranged layers (CALs) and cluster-arranged nanoplates (CANaPs) or complete the long-period stacking ordered (LPSO) phase. The thermal stability of these solute arrangements strongly influences mechanical performance at elevated temperatures.

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Domestication of dogs from their shared ancestors with wolves occurred more than 15,000 years ago and affected many characteristics of the species. We analyzed the blood RNA sequence data of 12 dogs and 11 wolves from Europe and Asia to shed more light on the domestication history of dogs. We implemented a differential gene expression analysis, a weighted gene correlation network analysis, gene ontology and genetic pathway analyses.

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Article Synopsis
  • Selecting a dog that doesn't match an owner's expectations can harm both the owner and the animal.
  • This study involved 1,077 Austrian dog owners and used open-ended questions to understand their reasons for acquiring dogs, revealing common responses around breed preference, impulsivity, and the importance of work skills.
  • Additionally, the research showed that factors like household composition influenced dog choice, with families preferring more manageable breeds, highlighting the need for qualitative data to fully grasp motivations in dog ownership.
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Genomic surveillance as a scalable framework for precision phage therapy against antibiotic-resistant pathogens.

Cell

October 2024

Synthetic and Systems Biology Unit, Institute of Biochemistry, National Laboratory of Biotechnology, HUN-REN Biological Research Centre, Temesvári Krt. 62, 6726 Szeged, Hungary; HCEMM-BRC Translational Microbiology Research Group, Budapesti út 9, 6728 Szeged, Hungary. Electronic address:

Article Synopsis
  • Phage therapy is a new way to fight germs that are super tough against antibiotics, especially in hospitals.
  • Scientists are figuring out how to create special mixes of viruses called phages that can target specific strains of a dangerous germ called Acinetobacter baumannii.
  • By studying where these germs are found in the world, researchers can prepare special phage treatments for different regions, which has been shown to work well in tests and with animals.
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Gender and trait rumination moderates the link between trait impulsivity and gambling problems severity in young adults.

Compr Psychiatry

November 2024

Institute of Psychology, ELTE Eötvös Loránd University, Budapest, Hungary; NAP3.0-SE Neuropsychopharmacology Research Group, Hungarian Brain Research Program, Semmelweis University, Budapest, Hungary; Department of Pharmacodynamics, Faculty of Pharmacy, Semmelweis University, Budapest, Hungary.

Aims: Trait impulsivity and trait rumination appear to uniquely contribute to problem gambling. However, only a limited number of studies have investigated their relationship with each other, and no study has tested whether their interplay could explain problem gambling. In this study, we aimed to examine these associations, especially focusing on the putative moderator role of gender.

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Pancreatic ductal adenocarcinoma is an extremely incurable cancer type characterized by cells with highly proliferative capacity and resistance against the current therapeutic options. Our study reveals that IRS1 acts as a bridging molecule between EGFR and IGFR/InsR signalization providing a potential mechanism for the interplay between signaling pathways and bypassing EGFR-targeted or IGFR/InsR-targeted therapies. The analysis of IRS1 phosphorylation status in four pancreatic cell lines identified the impact of EGFR signaling on IRS1 activation in comparison with InsR/IGFR signaling.

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  • The water molecule is vital for understanding the chemical make-up and dynamics of the universe, typically detected in gas form through high-frequency transitions.
  • Using advanced laser-based spectrometers, researchers obtained improved transition frequencies for various types of water (H₂O) molecules, incorporating new and existing measurements.
  • These highly precise frequencies (with small uncertainties) are expected to enhance future astrophysical studies, particularly in analyzing gas flows in galactic centers and the motion of materials in planetary nebulae and exoplanet atmospheres.
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PLC (Programmable Logic Controllers) based data collection is integral to industrial automation and data acquisition processes. The pipeline - between the device and the database - is a complex system with many components and often causes some time delay, due to the synchronization and the applied hardware and software components. This delay can also lead to data loss on the database site.

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The U-shaped curve has long been recognized as a fundamental concept in psychological science, particularly in theories about motivational accounts and cognitive control. In this study ( = 330), we empirically tested the prediction of a nonmonotonic, curvilinear relationship between task difficulty and control adaptation. Drawing from motivational intensity theory and the expected value of control framework, we hypothesized that control intensity would increase with task difficulty until a maximum tolerable level, after which it would decrease.

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Eglin C, a small protein from the medicinal leech, has been long considered a general high-affinity inhibitor of chymotrypsins and elastases. Here, we demonstrate that eglin C inhibits human chymotrypsin-like protease (CTRL) weaker by several orders of magnitude than other chymotrypsins. In order to identify the underlying structural aspects of this unique deviation, we performed comparative molecular dynamics simulations on experimental and AlphaFold model structures of bovine CTRA and human CTRL.

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  • A genomic database encompassing all eukaryotic species on Earth is crucial for scientific advancements, yet most species lack genomic data.
  • The Earth BioGenome Project (EBP) was initiated in 2018 by global scientists to compile high-quality reference genomes for approximately 1.5 million recognized eukaryotic species.
  • The European Reference Genome Atlas (ERGA) launched a Pilot Project to create a decentralized model for reference genome production by testing it on 98 species, providing valuable insights into scalability, equity, and inclusiveness for genomic projects.
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Modeling how climate change may affect the potential distribution of species and communities typically utilizes bioclimatic variables. Distribution predictions rely on the values of the bioclimatic variable (e.g.

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