Refine
Year of publication
- 2016 (117) (remove)
Document Type
- Article (96)
- Postprint (10)
- Other (5)
- Doctoral Thesis (3)
- Review (3)
Is part of the Bibliography
- yes (117)
Keywords
- techniques: spectroscopic (4)
- adaptation (3)
- patterns (3)
- risk factors (3)
- Alzheimer (2)
- BL Lacertae objects: general (2)
- Barents Sea (2)
- Chlamydomonas (2)
- Crotalus (2)
- Equatorial Pacific (2)
- Felidae (2)
- Germany (2)
- Gulf of Mexico (2)
- Lake Van (2)
- Mojave toxin (2)
- Pleistocene (2)
- South America (2)
- Southeast Asia (2)
- Sun: magnetic fields (2)
- X-ray absorption (2)
- X-rays: binaries (2)
- X-rays: stars (2)
- acidophile (2)
- binaries: general (2)
- chaotic neural dynamics (2)
- cortical network models (2)
- cortical oscillations (2)
- deep biosphere (2)
- dementia (2)
- evolution (2)
- extremophile (2)
- galaxies: evolution (2)
- galaxies: formation (2)
- gamma rays: galaxies (2)
- gamma rays: general (2)
- gamma-rays: general (2)
- hierarchical modular networks (2)
- history and philosophy of astronomy (2)
- hybridization (2)
- hydrogenase (2)
- intergalactic medium (2)
- intrinsic neuronal diversity (2)
- introgression (2)
- irregular firing activity (2)
- methods: data analysis (2)
- methods: observational (2)
- microbial activity (2)
- molecular evolution (2)
- phytoplankton (2)
- self-sustained activity (2)
- stars: winds, outflows (2)
- statins (2)
- sunspots (2)
- tritium assay (2)
- up-down states (2)
- venom (2)
- (9Z)-neoxanthin (1)
- 16S rRNA (1)
- 2-wyas translation (1)
- Adar formation (1)
- Afyon zone (1)
- Aging (1)
- Agricultural intensification (1)
- AgroScapeLabs (1)
- Amphibia (1)
- Anatolide-Tauride Block (1)
- Annual plant communities (1)
- Anserine (1)
- Anura (1)
- Apraxia (1)
- BL Lacertae objects: individual: Mrk 501 (1)
- Behavior therapy (1)
- Bioclimatic envelope modelling (1)
- Biomechanics (1)
- Bland and Altman plot (1)
- Body waves (1)
- Bragg coherent x-ray diffractive imaging (1)
- Brassica oleracea var. sabellica (1)
- CCM (1)
- CO2 concentrating mechanism (1)
- CO2 limitation (1)
- CO2 supply (1)
- Caatinga (1)
- Carboniferous magmatism (1)
- Cartilage tissue engineering (1)
- Central nervous system (1)
- Chlorella (1)
- Chronic pain (1)
- Climate change manipulations (1)
- Cognitive models of imitation (1)
- Cognitive therapy (1)
- Colorado injury report system (CIRS) (1)
- Comets (1)
- Common vole (1)
- Computational seismology (1)
- Conduction velocity (1)
- Controlled source seismology (1)
- Deglaciation (1)
- Dehydrothermal cross linking (1)
- Delinquency (1)
- Demographic transitions (1)
- Deutschland (1)
- Dichlorofluorescein assay (1)
- Dispersion curve (1)
- Dual scale factors (1)
- EXAFS (1)
- Earth materials (1)
- Earthquake source observations (1)
- East African rift system (1)
- Education, patients (1)
- Electrical conductivity (1)
- Electrical resistivity imaging (1)
- Electron paramagnetic resonance spectroscopy (1)
- Elite-Athleten (1)
- European bat species (1)
- Executive functions (1)
- Experimental evidence (1)
- F-statistics (1)
- Falkland islands (1)
- Fen stratigraphy (1)
- Fennoscandian Ice Sheet (1)
- Fluid intelligence (1)
- Fourier transform (1)
- Free radicals (1)
- Functional bat group (1)
- Galaxy: center (1)
- Gelatin-PLGA Scaffold (1)
- Geochronology (1)
- Geophysical methods (1)
- Glacial geomorphology (1)
- Global Lake Ecological Observatory Network (GLEON) (1)
- Glutathione (1)
- Gondwana (1)
- Ground penetrating radar (1)
- Gutmicrobiota (1)
- Gyttja (1)
- HaCaT cells (1)
- Habitat gradients (1)
- High-density surface EMG (1)
- High-throughput next-generation sequencing (1)
- IOC (1)
- IOC consensus statement 2009 (1)
- Ice sheet dynamics (1)
- InP nanowires (1)
- Infrared observations (1)
- Intergenerational effects (1)
- Inversion (1)
- Javan leopard (1)
- Kenya Rift (1)
- Kriging (1)
- Leber congenital amaurosis (1)
- Local Group (1)
- MADS-domain transcription factor (1)
- MASW (1)
- MHC diversity (1)
- Magellanic Clouds (1)
- Matrix IR spectrum (1)
- Meaning (1)
- Meteorites (1)
- Microtremors (1)
- Microtus arvalis (1)
- Migration (1)
- Military areas (1)
- Motor unit decomposition (1)
- Motor unit discharge rate (1)
- N-E (1)
- Natura 2000 (1)
- Neoplasms, psychology (1)
- Netherlands (1)
- Neuroimaging (1)
- Neuronal plasticity (1)
- Normal fault evolution (1)
- Offending (1)
- Olympic Games (1)
- One Plan Approach (1)
- Organic chemistry (1)
- Oxidative stress (1)
- PEG model (1)
- Pain management (1)
- Paleotethys (1)
- Parenthood (1)
- Paris-Edinburgh press (1)
- Patagonian Shelf (1)
- Peat properties (1)
- Peripheral nervous system (1)
- Plant functional groups (1)
- Population cycle (1)
- Pseudo-differential operators (1)
- Rainfall niche (1)
- Rat model (1)
- Rayleigh waves (1)
- Relaxation (1)
- Risikofaktoren (1)
- Risk-IQ (1)
- SQM-FF (1)
- Scenedesmus (1)
- Seasonality (1)
- Sediment distribution (1)
- Seismic anisotropy (1)
- Seismic tomography (1)
- Selection (1)
- Senior-LOken syndrome (1)
- Site characterization (1)
- Southeast Finland (1)
- Southern Ethiopia (1)
- Spectrophotometry (1)
- Stable isotopes (1)
- Structural inheritance (1)
- Sun: activity (1)
- Sun: chromosphere (1)
- Sun: photosphere (1)
- Surface-wave methods (1)
- TRIPP model (1)
- Tadpoles (1)
- Taiwan (1)
- Tautomerism (1)
- Toba eruption (1)
- Toba volcanic eruption (1)
- Training (1)
- Transfer (1)
- Turkana-Basin (1)
- Updating (1)
- Ursus arctos (1)
- Ursus spelaeus (1)
- V-s,V-30 (1)
- Vastus lateralis (1)
- Vastus medialis (1)
- Vegetation continuum (1)
- Verletzung (1)
- Wave propagation (1)
- Working memory (1)
- X-ray Raman scattering (1)
- accretion, accretion disks (1)
- admixture (1)
- advective-diffusive codes (1)
- agriculture (1)
- amyloid precursor protein (1)
- amyloid precursor-like protein (1)
- ancient (1)
- ancient DNA (1)
- arbuscular mycorrhizal fungi (1)
- archaeology (1)
- astrobiology (1)
- astroparticle physics (1)
- beta-carotene (1)
- biodiversity (1)
- biogeography (1)
- biological anthropology (1)
- biological invasion (1)
- biomass allocation (1)
- biomaterials (1)
- blue stragglers (1)
- body parts (1)
- bonding transition (1)
- boundary value problems (1)
- buildings (1)
- carbon acquisition (1)
- cardiovascular disease (1)
- cardiovascular implant (1)
- chlorophyll fluorescence (1)
- cis-regulatory evolution (1)
- climate-change (1)
- colonization (1)
- common species (1)
- complex food webs (1)
- comprehensive evaluation instrument (1)
- conduction (1)
- connectivity (1)
- coordination transformation (1)
- corpus linguistics (1)
- cosmology: observations (1)
- cross-sectional (1)
- current voltage analysis (1)
- damage (1)
- diamond anvil cell (1)
- diet (1)
- diffusion (1)
- distance seed dispersial (1)
- diversity (1)
- domestication (1)
- ecology (1)
- ecosystem function (1)
- electronic structure (1)
- elite athlete (1)
- evaluation tool (1)
- evolutionary history (1)
- extinction (1)
- extinctions (1)
- extraterrestrial intelligence (1)
- fMRI (1)
- factor analysis (1)
- feasibility (1)
- forward and backward translation (1)
- frequency (1)
- galaxies: active (1)
- galaxies: high-redshift (1)
- galaxies: individual: 1ES 1741+196=VER J1744+195 (1)
- generalists (1)
- glasses (1)
- global change (1)
- global climate (1)
- globular clusters: individual: (SMASH 1) (1)
- hemocompatibility (1)
- heterogeneity in soil hydraulic properties (1)
- heterogeneous cohorts (1)
- high pressure and temperature (1)
- high pressure research (1)
- high-frequency sensors (1)
- history (1)
- homing (1)
- hybrid capture (1)
- hydraulic conductivity (1)
- hydrodynamics (1)
- hyper spectral (1)
- identity hypothesis (1)
- ideologies (1)
- immigrants (1)
- inelastic X-ray scattering (1)
- injury and illness (1)
- injury surveillance (1)
- inner magnetosphere (1)
- inorganic carbon uptake kinetics (1)
- insurance (1)
- interaction (1)
- interactions (1)
- international competition participation (1)
- international sport federations (IFs) (1)
- intra-class correlation coefficient (ICC) (1)
- inventory of life events (ILE) (1)
- jump/sprint exercises (1)
- land use (1)
- last glacial maximum (1)
- line: profiles (1)
- liquid structure (1)
- longitudinal (1)
- losses (1)
- low temperature (1)
- lutein (1)
- marine predator (1)
- medical care providers (MCP) (1)
- medical care providers questionnaire (MCPQ) (1)
- medical education (1)
- medical history (1)
- medical resources (1)
- medical support (1)
- medium-sized carnivores (1)
- melts (1)
- migration (1)
- minerals (1)
- moderators (1)
- morphology (1)
- mountains (1)
- multi-factor (1)
- multi-sports (1)
- multilevel Monte Carlo (1)
- multiple logistic regression (1)
- multitrophic (1)
- national Olympic committees (NOCs) (1)
- nationalities (1)
- nephrocystins (1)
- nephronophthisis (1)
- neuronal adhesion (1)
- next generation sequencing (1)
- non-competition periods (1)
- number and brightness (1)
- numerical schemes (1)
- nutrient limitation (1)
- olorgesailie formation (1)
- operator valued symbols (1)
- opinions (1)
- optimal transport (1)
- organic solar cells (1)
- orientation course (1)
- otters (1)
- overtraining syndrome (1)
- oxidation state (1)
- pH-drift (1)
- patched vegetation cover (1)
- perceived stress scale (PSS) (1)
- periodic health exam (PHE) (1)
- photosynthesis response (1)
- planetary nebulae: general (1)
- plant development (1)
- plant functional traits (1)
- plant-soil (belowground) interactions (1)
- platelets (1)
- population (1)
- pre-participation evaluation (PPE) (1)
- profiling buoys (1)
- psychosocial (1)
- public-participation (1)
- pulsars: general (1)
- pulsars: individual (PSR J1023+0038) (1)
- quasars: individual (SDSS J142253.31-000149) (1)
- questionnaire (1)
- rabies spread (1)
- radiation mechanisms: non-thermal (1)
- rainfall-runoff (1)
- relativistic processes (1)
- root system (1)
- run-on (1)
- scales (1)
- scaling (1)
- semi-arid (1)
- sequence (1)
- sequential data assimilation (1)
- severe injury (1)
- size structure (1)
- sociality (1)
- soil aggregation (1)
- soil moisture (1)
- specialists (1)
- specialization (1)
- specific root length (1)
- spin transition (1)
- sport format (1)
- sport injury (1)
- sport injury risk factors model (1)
- sport location (1)
- sport training (1)
- stars: AGB and post-AGB (1)
- stars: Wolf-Rayet (1)
- stars: atmospheres (1)
- stars: emission-line, Be (1)
- stars: individual ( KIC 8462852) (1)
- stars: individual (LS I+61 degrees 303, VER J0240+612) (1)
- stars: individual (gamma Cassiopeiae) (1)
- stoichiometry (1)
- strain field (1)
- strategies (1)
- strength training (1)
- stress (1)
- stress and injury model (1)
- subsurface chlorophyll maximum (1)
- succession (1)
- supernovae: individual (G0.9+0.1) (1)
- surface sealing (1)
- techniques: photometric (1)
- techniques: polarimetric (1)
- telescopes (1)
- test-retest reliabilities (1)
- textbooks (1)
- training environment (1)
- training phases (1)
- validated measure (1)
- variability (1)
- vulnerability (1)
- water-stable aggregates (1)
- white dwarfs (1)
- whole-genome association (1)
- youth athletes (1)
- zeaxanthin (1)
- zinc (1)
Institute
- Institut für Physik und Astronomie (34)
- Institut für Biochemie und Biologie (28)
- Institut für Geowissenschaften (22)
- Mathematisch-Naturwissenschaftliche Fakultät (9)
- Institut für Chemie (7)
- Institut für Ernährungswissenschaft (5)
- Department Psychologie (2)
- Institut für Mathematik (2)
- Department Sport- und Gesundheitswissenschaften (1)
- Humanwissenschaftliche Fakultät (1)
We present an optically induced remanent photostriction in BiFeO3, resulting from the photovoltaic effect, which is used to modify the ferromagnetism of Ni film in a hybrid BiFeO3/Ni structure. The 75% change in coercivity in the Ni film is achieved via optical and nonvolatile control. This photoferromagnetic effect can be reversed by static or ac electric depolarization of BiFeO3. Hence, the strain dependent changes in magnetic properties are written optically, and erased electrically. Light-mediated straintronics is therefore a possible approach for low-power multistate control of magnetic elements relevant for memory and spintronic applications.
Animal-associated microbial communities can play major roles in the physiology, development, ecology, and evolution of their hosts, but the study of their diversity has yet focused on a limited number of host species. In this study, we used high-throughput sequencing of partial sequences of the bacterial 16S rRNA gene to assess the diversity of the gut-inhabiting bacterial communities of 212 specimens of tropical anuran amphibians from Brazil and Madagascar. The core gut-associated bacterial communities among tadpoles from two different continents strongly overlapped, with eight highly represented operational taxonomic units (OTUs) in common. In contrast, the core communities of adults and tadpoles from Brazil were less similar with only one shared OTU. This suggests a community turnover at metamorphosis. Bacterial diversity was higher in tadpoles compared to adults. Distinct differences in composition and diversity occurred among gut bacterial communities of conspecific tadpoles from different water bodies and after experimental fasting for 8 days, demonstrating the influence of both environmental factors and food on the community structure. Communities from syntopic tadpoles clustered by host species both in Madagascar and Brazil, and the Malagasy tadpoles also had species-specific isotope signatures. We recommend future studies to analyze the turnover of anuran gut bacterial communities at metamorphosis, compare the tadpole core communities with those of other aquatic organisms, and assess the possible function of the gut microbiota as a reservoir for protective bacteria on the amphibian skin.
As indicated by previous research, aging is associated with a decline in working memory (WM) functioning, related to alterations in fronto-parietal neural activations. At the same time, previous studies showed that WM training in older adults may improve the performance in the trained task (training effect), and more importantly, also in untrained WM tasks (transfer effects). However, neural correlates of these transfer effects that would improve understanding of its underlying mechanisms, have not been shown in older participants as yet. In this study, we investigated blood-oxygen-level-dependent (BOLD) signal changes during n-back performance and an untrained delayed recognition (Sternberg) task following 12 sessions (45 min each) of adaptive n-back training in older adults. The Sternberg task used in this study allowed to test for neural training effects independent of specific task affordances of the trained task and to separate maintenance from updating processes. Thirty-two healthy older participants (60-75 years) were assigned either to an n-back training or a no-contact control group. Before (t1) and after (t2) training/waiting period, both the n-back task and the Sternberg task were conducted while BOLD signal was measured using functional Magnetic Resonance Imaging (fMRI) in all participants. In addition, neuropsychological tests were performed outside the scanner. WM performance improved with training and behavioral transfer to tests measuring executive functions, processing speed, and fluid intelligence was found. In the training group, BOLD signal in the right lateral middle frontal gyrus/caudal superior frontal sulcus (Brodmann area, BA 6/8) decreased in both the trained n-back and the updating condition of the untrained Sternberg task at t2, compared to the control group. fMRI findings indicate a training-related increase in processing efficiency of WM networks, potentially related to the process of WM updating. Performance gains in untrained tasks suggest that transfer to other cognitive tasks remains possible in aging. (C) 2016 Elsevier Inc. All rights reserved.
Background: Dementia is a psychiatric condition the development of which is associated with numerous aspects of life. Our aim was to estimate dementia risk factors in German primary care patients.
Methods: The case-control study included primary care patients (70-90 years) with first diagnosis of dementia (all-cause) during the index period (01/2010-12/2014) (Disease Analyzer, Germany), and controls without dementia matched (1:1) to cases on the basis of age, sex, type of health insurance, and physician. Practice visit records were used to verify that there had been 10 years of continuous follow-up prior to the index date. Multivariate logistic regression models were fitted with dementia as a dependent variable and the potential predictors.
Conclusions: Risk factors for dementia found in this study are consistent with the literature. Nevertheless, the associations between statin, PPI and antihypertensive drug use, and decreased risk of dementia need further investigations.
We present a nanostructured device that functions as photoacoustic hard x-ray switch. The device is triggered by femtosecond laser pulses and allows for temporal gating of hard x-rays on picosecond (ps) timescales. It may be used for pulse picking or even pulse shortening in 3rd generation synchrotron sources. Previous approaches mainly suffered from insufficient switching contrasts due to excitation-induced thermal distortions. We present a new approach where thermal distortions are spatially separated from the functional switching layers in the structure. Our measurements yield a switching contrast of 14, which is sufficient for efficient hard x-ray pulse shortening. The optimized structure also allows for utilizing the switch at high repetition rates of up to 208 kHz. Published by AIP Publishing.
A search for dark matter linelike signals iss performed in the vicinity of the Galactic Center by the H.E.S.S. experiment on observational data taken in 2014. An unbinned likelihood analysis iss developed to improve the sensitivity to linelike signals. The upgraded analysis along with newer data extend the energy coverage of the previous measurement down to 100 GeV. The 18 h of data collected with the H.E.S.S. array allow one to rule out at 95% C.L. the presence of a 130 GeV line (at l = -1.5 degrees, b = 0 degrees and for a dark matter profile centered at this location) previously reported in Fermi-LAT data. This new analysis overlaps significantly in energy with previous Fermi-LAT and H.E.S.S. results. No significant excess associated with dark matter annihilations was found in the energy range of 100 GeV to 2 TeV and upper limits on the gamma-ray flux and the velocity weighted annihilation cross section are derived adopting an Einasto dark matter halo profile. Expected limits for present and future large statistics H.E.S.S. observations are also given.
Galactic cosmic rays reach energies of at least a few petaelectronvolts (of the order of 1015 electronvolts). This implies that our Galaxy contains petaelectronvolt accelerators (‘PeVatrons’), but all proposed models of Galactic cosmic-ray accelerators encounter difficulties at exactly these energies. Dozens of Galactic accelerators capable of accelerating particles to energies of tens of teraelectronvolts (of the order of 1013 electronvolts) were inferred from recent γ-ray observations3. However, none of the currently known accelerators—not even the handful of shell-type supernova remnants commonly believed to supply most Galactic cosmic rays—has shown the characteristic tracers of petaelectronvolt particles, namely, power-law spectra of γ-rays extending without a cut-off or a spectral break to tens of teraelectronvolts4. Here we report deep γ-ray observations with arcminute angular resolution of the region surrounding the Galactic Centre, which show the expected tracer of the presence of petaelectronvolt protons within the central 10 parsecs of the Galaxy. We propose that the supermassive black hole Sagittarius A* is linked to this PeVatron. Sagittarius A* went through active phases in the past, as demonstrated by X-ray outbursts5and an outflow from the Galactic Centre6. Although its current rate of particle acceleration is not sufficient to provide a substantial contribution to Galactic cosmic rays, Sagittarius A* could have plausibly been more active over the last 106–107 years, and therefore should be considered as a viable alternative to supernova remnants as a source of petaelectronvolt Galactic cosmic rays.