Hydrogen Sensing via Heterolytic H2 Activation at Room Temperature by Atomic Layer Deposited Ceria.

Ultrathin atomic layer deposited ceria films (< 20 nm) are capable of H2 heterolytic activation at room temperature, undergoing a significant reduction regardless of the absolute pressure, as measured under in-situ conditions by near ambient pressure X-ray photoelectron spectroscopy. ALD-ceria can gradually reduce as a function of H2 concentration under H2/O2 environments, especially for diluted mixtures below 10%. At room temperature, this reduction is limited to the surface region, where the hydroxylation of the ceria surface induces a charge transfer towards the ceria matrix, reducing Ce4+ cations to Ce3+.

Design and Evaluation of a Low-Cost Mount for Attaching a Laser Tracker's SMR to a Robot Flange.

Robot calibration and modelling measurements are commonly performed using a laser tracker. To capture three-dimensional positions, a SMR is attached to the robot. While some researchers employ adhesive bonds for this purpose, such methods often result in inaccurate, unstable and non-repeatable SMR positioning, adversely affecting measurement precision and the traceability of research outcomes.

Towards a multi-VOC emission reference material with temporally constant emission profile for QA/QC of materials emission testing procedures.

Emission reference materials (ERMs) are sought after to further control and improve indoor air quality. The impregnation of porous materials with volatile organic compounds (VOCs) is a promising approach to produce ERMs. Different VOCs were used to impregnate various porous materials (mainly zeolites, activated carbons and a metal organic framework).

[Fatigue and sensorimotor instability : Neurologically controlled conversion of post-COVID-19 patients].

Background: For the treatment of the symptoms of post-COVID-19 syndrome, no causal therapy is currently widely recommended according to evidence-based criteria. The overarching goal of the intervention study over a 3-year period (Q1-2021-Q4-2023) was to evaluate the changes in the key symptoms of fatigue and sensorimotor instability through individualized stress-controlled training therapy and through intensified cognitive behavioral therapy.

Material And Methods: In the 3‑year period 407 vaccinated nucleocapsid positive patients were treated at the Post-COVID-19 Center Lausitz (Senftenberg).

Silicon-28-Tetrafluoride as an Educt of Isotope-Engineered Silicon Compounds and Bulk Materials for Quantum Systems.

This review provides a summary of the existing literature on a crucial raw material for the production of isotopically pure semiconductors, which are essential for the development of second-generation quantum systems. Silicon-28-tetrafluoride (SiF) is used as an educt for several isotope-engineered chemicals, such as silane-28 (SiH) and silicon-28-trichloride (SiHCl), which are needed in the pursuit of various quantum technologies. We are exploring the entire chain from the synthesis of SiF to quantum applications.

[Psychosocial stress and working conditions of nursing home staff in Covid-19 pandemic: A cross-sectional study].

Psychosocial stress and working conditions of nursing home staff in Covid-19 pandemic: A cross-sectional study With the onset of the Covid-19 pandemic in March 2020 there were numerous changes in the daily professional lives of healthcare professionals. Since the focus has been mainly on hospital staff so far, it is also important to watch the care situation in old people's and nursing homes. This study aimed to investigate the impact of the Covid-19 pandemic on the daily professional life, the psychosocial situation and the interpersonal relationships of nursing staff in old people's and nursing homes in Brandenburg.

Multivariate comparison of taxonomic, chemical and operational data from 80 different full-scale anaerobic digester-related systems.

Background: The holistic characterization of different microbiomes in anaerobic digestion (AD) systems can contribute to a better understanding of these systems and provide starting points for bioengineering. The present study investigates the microbiome of 80 European full-scale AD systems. Operational, chemical and taxonomic data were thoroughly collected, analysed and correlated to identify the main drivers of AD processes.

Evidence-based and Patient-centered Indication for Knee Arthroplasty - Update of the Guideline.

Knee arthroplasty is one of the most frequently performed operations in Germany, with approximately 170000 procedures per year. It is therefore essential that physicians should adhere to an appropriate, and patient-centered indication process. The updated guideline indication criteria for knee arthroplasty (EKIT-Knee) contain recommendations, which are based on current evidence and agreed upon by a broad consensus panel.

Stochastic Compartment Model with Mortality and Its Application to Epidemic Spreading in Complex Networks.

We study epidemic spreading in complex networks by a multiple random walker approach. Each walker performs an independent simple Markovian random walk on a complex undirected (ergodic) random graph where we focus on the Barabási-Albert (BA), Erdös-Rényi (ER), and Watts-Strogatz (WS) types. Both walkers and nodes can be either susceptible (S) or infected and infectious (I), representing their state of health.

Strong Optical Coupling of Lattice Resonances in a Top-down Fabricated Hybrid Metal-Dielectric Al/Si/Ge Metasurface.

Optical metasurfaces enable the manipulation of the light-matter interaction in ultrathin layers. Compared with their metal or dielectric counterparts, hybrid metasurfaces resulting from the combination of dielectric and metallic nanostructures can offer increased possibilities for interactions between modes present in the system. Here, we investigate the interaction between lattice resonances in a hybrid metal-dielectric metasurface obtained from a single-step nanofabrication process.

Analysis and modelling of profiles to understand fractionation processes for contaminations with polychlorinated biphenyls observed in fish.

Polychlorinated biphenyls (PCB) both continue to spread into the environment and to bioaccumulate from primary urban and industrial sources as well as from secondary sources such as soils and the oceans. Fractions of congeners in PCB mixtures, i.e.

Linking functional composition moments of the sub-Mediterranean ecotone with environmental drivers.

Introduction: Functional trait-based approaches are extensively applied to the study of mechanisms governing community assembly along environmental gradients. These approaches have been classically based on studying differences in mean values among species, but there is increasing recognition that alternative metrics of trait distributions should be considered to decipher the mechanisms determining community assembly and species coexistence. Under this framework, the main aim of this study is to unravel the effects of environmental conditions as drivers of plant community assembly in sub-Mediterranean ecotones.

Evolution of point defects in pulsed-laser-melted GeSnprobed by positron annihilation lifetime spectroscopy.

Direct-band-gap Germanium-Tin alloys (GeSn) with high carrier mobilities are promising materials for nano- and optoelectronics. The concentration of open volume defects in the alloy, such as Sn and Ge vacancies, influences the final device performance. In this article, we present an evaluation of the point defects in molecular-beam-epitaxy grown GeSnfilms treated by post-growth nanosecond-range pulsed laser melting (PLM).

[Loneliness in childhood and adolescence. On the prevalence of a mental health risk factor among 11- to 15-year-old German students].

Background: Loneliness is an increasingly present topic in both public and scientific discourse. There is increasing research on the prevalence of loneliness and health-related correlates in adults. However, there are only a few findings on loneliness in childhood and adolescence in Germany.

[Development of an Index of Social Structures to Determine the Sociostructural Need for Physicians in Outpatient Care in Brandenburg].

Introduction: Despite the growing numbers of physicians in outpatient care, continuing discussion about the planning of physician requirements suggests remaining problems in this field, which could be due to focussing on the ratio of physician to population rather than on morbidity-based evaluations. Against this background, this paper tries to depict the latent need in outpatient care, illustrates supply and demand and further tests the hypothesis that there is a relative inequality in distribution due to physicians preferring to locate in socially privileged areas in the German state of Brandenburg.

Methods: We aggregated all data available on a small scale with potential impact on demand and examined it via principal component analysis.

Four-compartment epidemic model with retarded transition rates.

We study an epidemic model for a constant population by taking into account four compartments of the individuals characterizing their states of health. Each individual is in one of the following compartments: susceptible S; incubated, i.e.

[Concern about Covid-19 Infection and the Risk of Burnout Symptoms: a Study of Caregiver Stress in Brandenburg Nursing Homes During the Covid-19 Pandemic].

Objective: Investigation of the association of concern about own infection or infection of friends, family and care recipients with Covid-19 and burnout symptoms of caregivers in Brandenburg full inpatient geriatric care facilities.

Methods: Cross-sectional survey of nursing staff (n=195) in Brandenburg nursing homes between August and December 2020 regarding their psychosocial stress at work.

Results: Concern about having infected oneself, family and/or friends, or care recipients with Covid-19 is associated with increased expression of burnout symptoms (b=0,200, t(155)=2,777, p=0,006).

Potential of La-Doped SrTiO Thin Films Grown by Metal-Organic Vapor Phase Epitaxy for Thermoelectric Applications.

La-doped SrTiO thin films with high structural quality were homoepitaxially grown by the metal-organic vapor phase epitaxy (MOVPE) technique. Thermogravimetric characterization of the metal-organic precursors determines suitable flash evaporator temperatures for transferring the liquid source materials in the gas phase of the reactor chamber. An adjustment of the charge carrier concentration in the films, which is necessary for optimizing the thermoelectric power factor, was performed by introducing a defined amount of the metal-organic compound La(tmhd) and tetraglyme to the liquid precursor solution.

Type D Personality as a Risk Factor for Adverse Outcome in Patients With Cardiovascular Disease: An Individual Patient-Data Meta-analysis.

Objective: Type D personality, a joint tendency toward negative affectivity and social inhibition, has been linked to adverse events in patients with heart disease, although with inconsistent findings. Here, we apply an individual patient-data meta-analysis to data from 19 prospective cohort studies ( N = 11,151) to investigate the prediction of adverse outcomes by type D personality in patients with acquired cardiovascular disease.

Method: For each outcome (all-cause mortality, cardiac mortality, myocardial infarction, coronary artery bypass grafting, percutaneous coronary intervention, major adverse cardiac event, any adverse event), we estimated type D's prognostic influence and the moderation by age, sex, and disease type.

A research agenda for nonvascular photoautotrophs under climate change.

Nonvascular photoautotrophs (NVP), including bryophytes, lichens, terrestrial algae, and cyanobacteria, are increasingly recognized as being essential to ecosystem functioning in many regions of the world. Current research suggests that climate change may pose a substantial threat to NVP, but the extent to which this will affect the associated ecosystem functions and services is highly uncertain. Here, we propose a research agenda to address this urgent question, focusing on physiological and ecological processes that link NVP to ecosystem functions while also taking into account the substantial taxonomic diversity across multiple ecosystem types.

[Is this (already) hate speech?-A qualitative study on the understanding of hate speech among educational school staff].

Hate speech is a social phenomenon that also affects the school environment. However, what school staff understands by hate speech is unclear, and therefore, the objective of the present interview study with teachers ( = 18) and social pedagogues ( = 16). The results showed that hate speech is understood as the degradation of structurally oppressed groups (e.

Band-gap and strain engineering in GeSn alloys using post-growth pulsed laser melting.

The pseudomorphic growth of GeSnon Ge causes in-plane compressive strain, which degrades the superior properties of the GeSnalloys. Therefore, efficient strain engineering is required. In this article, we present strain and band-gap engineering in GeSnalloys grown on Ge a virtual substrate using post-growth nanosecond pulsed laser melting (PLM).

[Digital health literacy of pupils. Level and associations with physical activity and dietary behavior].

Background: While there are increasing empirical findings on general health literacy (HL), there is a lack of evidence on digital HL in adolescence and its association with health behavior.

Methods: A cross-sectional study of 490 students from grade eight and nine from the federal state of Hesse was conducted from October 2019 to February 2020. Digital HL was assessed using five subscales of the Digital Health Literacy Instrument (DHLI), while consumption of fruits, vegetables, and soft drinks as well as weekly physical activity were used as indicators of health behavior.

Simple model of epidemic dynamics with memory effects.

We introduce a compartment model with memory for the dynamics of epidemic spreading in a constant population of individuals. Each individual is in one of the states S=susceptible, I=infected, or R=recovered (SIR model). In state R an individual is assumed to stay immune within a finite-time interval.