5,289 results match your criteria: "University Berlin[Affiliation]"

Article Synopsis
  • Insects use colors for various purposes like mating signals, avoiding predators, and regulating body temperature.
  • Climate change may alter melanin-based colors in insects, affecting their physiological functions and interactions with other species.
  • This review aims to summarize existing knowledge on how climate-induced color changes impact insect biology, focusing on environmental influences, adaptive mechanisms, and their consequences for interactions with both the same and different species.
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[FeFe]-hydrogenase is nature's most efficient proton reducing and H-oxidizing enzyme. However, biotechnological applications are hampered by the O sensitivity of this metalloenzyme, and the mechanism of aerobic deactivation is not well understood. Here, we explore the oxygen sensitivity of four mimics of the organometallic active site cofactor of [FeFe]-hydrogenase, [Fe(adt)(CO)(CN)] and [Fe(pdt)(CO)(CN)] ( = 1, 2) as well as the corresponding cofactor variants of the enzyme by means of infrared, Mössbauer, and NMR spectroscopy.

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The influence of travel time on perceived traveled distance varies by spatiotemporal scale.

Exp Brain Res

August 2024

Biological Psychology and Neuroergonomics, Technical University Berlin, 10623, Berlin, Germany.

The influence of travel time on perceived traveled distance has often been studied, but the results are inconsistent regarding the relationship between the two magnitudes. We argue that this is due to differences in the lengths of investigated travel distances and hypothesize that the influence of travel time differs for rather short compared to rather long traveled distances. We tested this hypothesis in a virtual environment presented on a desktop as well as through a head-mounted display.

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Time and space form an integral part of every human experience, and for the neuronal representation of these perceptual dimensions, previous studies point to the involvement of the right-hemispheric intraparietal sulcus and structures in the medial temporal lobe. Here we used multi-voxel pattern analysis (MVPA) to investigate long-term memory traces for temporal and spatial stimulus features in those areas. Participants were trained on four images associated with short versus long durations and with left versus right locations.

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Adaptive dynamical networks are network systems in which the structure co-evolves and interacts with the dynamical state of the nodes. We study an adaptive dynamical network in which the structure changes on a slower time scale relative to the fast dynamics of the nodes. We identify a phenomenon we refer to as recurrent adaptive chaotic clustering (RACC), in which chaos is observed on a slow time scale, while the fast time scale exhibits regular dynamics.

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Cardiac xenotransplantation has seen remarkable success in recent years and is emerging as the most promising alternative to human cardiac allotransplantation. Despite these achievements, acute vascular rejection still presents a challenge for long-term xenograft acceptance and new insights into innate and adaptive immune responses as well as detailed characterizations of signaling pathways are necessary. In allotransplantation, endothelial cells and their sugar-rich surface-the endothelial glycocalyx-are known to influence organ rejection.

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Level of structural integration in people with schizophrenia and schizoaffective disorders - applicability and associations with clinical parameters.

Front Psychiatry

June 2024

Department of Psychiatry and Psychotherapy, Charité -Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.

Introduction: The psychic structure of people with psychosis has been the subject of theoretical and qualitative considerations. However, it has not been sufficiently studied quantitatively. Therefore, the aim of this study was to explore the structural abilities of people diagnosed with schizophrenia and schizoaffective psychosis using the Levels of Structural Integration Axis of the Operationalized Psychodynamic Diagnosis System (OPD-2-LSIA).

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Impact of the 2008 economic crisis on the burden of hepatitis B and C diseases in Southern European countries.

BMC Public Health

June 2024

Laboratory of Viral Hepatitis, National Center of Microbiology, Institute of Health Carlos III, Carretera Majadahonda-Pozuelo Km 2.2, 28220, Majadahonda, Madrid, Spain.

Background: The economic crisis that began in 2008 has severely affected Southern (Greece, Italy, Portugal, Spain) Western European (SWE) countries of Western Europe (WE) and may have affected ongoing efforts to eliminate viral hepatitis. This study was conducted to investigate the impact of the economic crisis on the burden of HBV and HCV disease.

Methods: Global Burden of Diseases 2019 data were used to analyse the rates of epidemiological metrics of HBV and HCV acute and chronic infections in SWE and WE.

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The high prevalence of injuries in female athletes necessitates a course of action that not only enhances research in this field but also incorporates improved prevention programs and regular health monitoring of highly stressed structures such as tendons and muscles. Since myometry is already used by coaches and physiotherapists, it is important to investigate whether tissue stiffness varies in different types of sports, and whether such measures are affected by an acute training session. Myometric measurements of the Achilles tendon (AT) and soleus muscle (SM) were performed in the longitudinal plane and relaxed tendon position.

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Article Synopsis
  • Existing mass spectrometry (MS) methods struggle to accurately characterize the composition of organic aerosol (OA) due to limitations like selective ionization and extraction issues.
  • A study examined aerosol samples from various atmospheric conditions using both electrospray ionization (ESI) and laser desorption ionization (LDI), finding that LDI simplifies sample preparation and offers better analysis of certain compounds.
  • In situ LDI proves to be particularly effective in identifying molecular compositions of OAs, especially from polluted samples, potentially improving our understanding of OA sources and impacts on the atmosphere.
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Background/objectives: The public perception relating to the welfare of horses involved with equestrian sports is associated with training methods used and the presentation of horses at events. In this context, very tight nosebands, which are intended to prevent the horse from opening its mouth, also attract a lot of attention. Various studies have evaluated the impact of tight nosebands on stress parameters, whereas the effect of tight nosebands on upper airway function is unknown.

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Given the multitude of challenges Earth is facing, sustainability science is of key importance to our continued existence. Evolution is the fundamental biological process underlying the origin of all biodiversity. This phylogenetic diversity fosters the resilience of ecosystems to environmental change, and provides numerous resources to society, and options for the future.

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In recent years, there has been an increase in interest in what environmental sustainability means for healthcare, including oral health and dentistry. To help facilitate discussions among key stakeholders in this area, the Scottish Dental Clinical Effectiveness Programme held a workshop in November 2022. The purpose of this workshop was to explore current thinking on the subject of sustainability as it relates to oral health and to help stakeholders identify how to engage with the sustainability agenda.

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In recent years, mentalizing - the capacity to understand one's own and others' intentional mental states in social contexts - has been considered to be a protective capacity that enables adaptive processing of stress-related emotional arousal, benefits general well-being and underpins adaptive emotion regulation. Several studies using cross-sectional research designs have demonstrated the potential health-promoting effect of mentalizing in non-clinical samples. However, longitudinal evidence is scarce.

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We know that unemployment leaves scars. Unemployment scars are the penalties in terms of employment outcomes that workers experience due to past unemployment. To date we lack a long-term longitudinal account which examines how unemployment scarring has developed over time.

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Mastophorus muris (Gmelin, 1790) is a globally distributed parasitic nematode of broad range mammals. The taxonomy within the genus Mastophorus and the cryptic diversity among the genus are controversial among taxonomists. This study provides a detailed morphological description of M.

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LDL receptor in alphavirus entry: structural analysis and implications for antiviral therapy.

Nat Commun

June 2024

Engineering Laboratory of Animal Immunity of Jiangsu Province, College of Veterinary Medicine, Academy for Advanced Interdisciplinary Studies, Nanjing Agricultural University, Nanjing, China.

Various low-density lipoprotein receptors (LPRs) have been identified as entry factors for alphaviruses, and structures of the corresponding virion-receptor complexes have been determined. Here, we analyze the similarities and differences in the receptor binding modes of multiple alphaviruses to understand their ability to infect a wide range of hosts. We further discuss the challenges associated with the development of broad-spectrum treatment strategies against a diverse range of alphaviruses.

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Upcoming energy-autonomous mm-scale Internet-of-things devices require high-energy and high-power microbatteries. On-chip 3D thin-film batteries (TFBs) are the most promising option but lack high-rate anode materials. Here, LiTiO thin films fabricated by atomic layer deposition (ALD) are electrochemically evaluated on 3D substrates for the first time.

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Objectives: Patient-reported outcome measures (PROMs) have emerged as a promising approach to involve patients in their treatment process. Beyond serving as outcome measures, PROMs can be applied to provide feedback to healthcare providers and patients, thereby offering valuable insights that can improve health outcomes and care processes. This overview offers a comprehensive synthesis of the effects of PROM feedback, contributing to the evidence-based discussion on PROMs' potential to enhance patient care.

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Widespread horse-based mobility arose around 2200 BCE in Eurasia.

Nature

July 2024

Centre d'Anthropobiologie et de Génomique de Toulouse, CNRS UMR 5288, Université Paul Sabatier, Faculté de Médecine Purpan, Toulouse, France.

Article Synopsis
  • - Horses transformed human mobility, but the timeline of their domestication and integration as transport is debated, with new genetic data being used to clarify this history.
  • - Analysis of 475 ancient horse genomes indicates that modern domestic horses were shaped by human intervention around 2200 BCE, after a domestication bottleneck began around 2700 BCE, leading to a significant expansion across Eurasia.
  • - Evidence also suggests that there was early horse husbandry in central Asia at Botai around 3500 BCE, prior to the establishment of contemporary horse bloodlines, challenging the notion of large herds being linked to migrations around 3000 BCE.
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Experiencing pain in middle adulthood and old age might be interpreted as a sign of aging and make people feel older, whereas feeling older has behavioral, motivational, and physiological consequences that might increase the risk of pain. We investigated between-person and within-person associations between pain, subjective age, and chronological age in middle-aged and older adults. Data from the German Ageing Survey were used ( = 13,874 who provided more than 32,000 observations, baseline mean age = 62.

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Long-standing questions about human brain evolution may only be resolved through comparisons with close living evolutionary relatives, such as chimpanzees. This applies in particular to structural white matter (WM) connectivity, which continuously expanded throughout evolution. However, due to legal restrictions on chimpanzee research, neuroscience research currently relies largely on data with limited detail or on comparisons with evolutionarily distant monkeys.

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Monitoring of toxic cyanobacterial blooms in Lalla Takerkoust reservoir by satellite imagery and microcystin transfer to surrounding farms.

Harmful Algae

May 2024

Water, Biodiversity and Climate Change Laboratory, Faculty of Sciences Semlalia, Cadi Ayyad University, Av. Prince My Abdellah, P.O. Box 2390, Marrakech, 40000, Morocco.

Article Synopsis
  • Cyanobacterial harmful algal blooms (CyanoHABs) pose risks to public health and freshwater ecosystems, prompting a study on their dynamics and the movement of microcystins (MCs) from Lalla Takerkoust reservoir to nearby farms.
  • The research identified Microcystis and Synechococcus species as responsible for the blooms, with Microcystis producing significant levels of three MC variants, particularly MC-RR, while Synechococcus showed no toxin production.
  • Analysis revealed a historical pattern of cyanobacterial proliferation and indicated a significant decrease in MC concentrations as one moves downstream from the reservoir, emphasizing the influence of environmental factors and the necessity for effective bloom management.
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The spread of antimicrobial resistance (AMR) in animal husbandry is usually attributed to the use of antibiotics and poor hygiene and biosecurity. We therefore conducted experimental trials to improve hygiene management in weaned pig houses and assessed the impact on the spread. For each of the two groups examined, the experimental group (EG) and the control group (CG), three replicate batches of piglets from the same pig breeder, kept in pre-cleaned flat decks, were analyzed.

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