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Article
A biogeochemical–hydrological framework for the role of redox-active compounds in aquatic systems
Redox-driven biogeochemical element cycles play a central role in converting organic matter in aquatic ecosystems. They also perform key functions such as removing nitrate, mitigating the formation of greenhou...
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Article
Improved Pleistocene sediment stratigraphy and paleoenvironmental implications for the western Arctic Ocean off the East Siberian and Chukchi margins
Sediment cores from the East Siberian and Chukchi margins and adjacent basins are used to refine the upper Pleistocene stratigraphy and better constrain the timing of major glacial advances in the western Arct...
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Article
Correction: Corrigendum: A large light-mass component of cosmic rays at 1017–1017.5 electronvolts from radio observations
Nature 531, 70–73 (2016); doi:10.1038/nature16976 In this Letter, we omitted to cite preliminary results from the low-energy extension of the Pierre Auger Observatory, as presented at the International Cosmic ...
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Article
A large light-mass component of cosmic rays at 1017–1017.5 electronvolts from radio observations
High-resolution radio measurements of air showers—cascades of secondary particles in the atmosphere initiated by cosmic rays—reveal that cosmic rays with energies of 1017–1017.5 electronvolts have a mixed composi...
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Article
Engagement of commissioners, primary and secondary care for develo** successful ADHD services
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Article
Multidisciplinary Consensus for the Future Development of ADHD Services in the UK; Working Together to Improve Patients Care
Aim/Objectives: To define a set of standards and validate them as a road map for future development of ADHD services in the UK.
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Article
Clay minerals as an indicator of the accumulation of the Upper Quaternary deposits in the St. Anna Trough (Kara Sea)
This paper is devoted to the studies of clay minerals from two cores collected in the northern and central regions of the St. Anna Trough, the largest trough of the Kara Sea. The Upper Quaternary glacial, glac...
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Article
Evaluation of Safety and Efficacy of Rosiglitazone in the Treatment of HIV-Associated Lipodystrophy Syndrome
HIV-associated lipodystrophy syndrome (LDS) as a long-term side effect of HAART is becoming increasingly important and negatively affects adherence to medication. Currently, an effective therapy is not availab...
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Article
Diversity of Ribulose-1,5-Bisphosphate Carboxylase/Oxygenase Large-Subunit Genes from Groundwater and Aquifer Microorganisms
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Ultraschallkontrastmittel in der Diagnostik fokaler Leberläsionen
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Wertigkeit Bild gebender Verfahren in der Diagnostik kolorektaler Tumoren
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Article
Two-photon annihilation into baryon-antibaryon pairs
We study the handbag contribution to two-photon annihilation into baryon-antibaryon pairs at large energy and momentum transfer. We derive factorization of the process amplitude into a hard $\...
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Article
Characterization of laser-irradiated YNi2B2C surfaces by Auger electron spectroscopy
The suitability of laser ablation inductively coupled plasma mass spectrometry (LA–ICP–MS) for precise analysis of YNi2B2C has been investigated. The intensity ratios B/Y and Ni/Y were found to vary during ablat...
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Article
The annihilation of virtual photons into pseudoscalar mesons
We investigate the possibility to constrain the pion distribution amplitude from the \(\gamma^* \gamma^* \to\pi\) transition. For a surprisingly large range in the two photon vi...
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Article
Separation of metal ions by capillary electrophoresis – diversity, advantages, and drawbacks of detection methods
Capillary electrophoresis (CE) has been applied to metal-ion analysis during the last 10 years. To improve sensitivity and selectivity different modes of detection have been adapted or developed. The selectio...
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Article
Intracerebral neurocysticercosis mimicking glioblastoma multiforme: a rare differential diagnosis in Central Europe
A 47-year-old Greek man presented with a 4-week history of speech difficulties. CT and MRI revealed a low-density multilobulated cystic frontal mass with peripheral ring contrast enhancement adjacent to the s...
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Article
Accurate and precise spectrochemical analysis of Bi-Pb-Sr-Ca-Cu-O high-temperature superconductor materials
For quality tests of ceramic Bi-Pb-Sr-Ca-Cu-O superconductor materials (precursors and final products) accurate stoichiometric determinations of the metallic major components are necessary. Three methods were...
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Article
Application of laser ablation inductively coupled mass spectrometry (LA-ICP-MS) for the determination of major, minor, and trace elements in bark samples
The large surface area of barks from many tree species enables the effective accumulation of pollutants. Therefore, the analysis of bark material will provide useful information about the degree of pollution ...
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Article
Trace analysis of surfactants using chromatographic and electrophoretic techniques
Because of the widespread use, increased application of new formulations and immense impact on organisms and ecology surfactants are still in the focus of analytical chemistry. The development of methods with...
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Article
Alkali-labile precursors of dimethyl sulfide in marine benthic cyanobacteria
By the method of cold alkali hydrolysis, 29 marine benthic cyanobacteria were screened for production of alkali-labile precursors of dimethyl sulfide (DMS) including dimethylsulfoniopropionate (DMSP), a compo...
