▶ Covers the full spectrum of natural scientific methods with an emphasis on the archaeological contexts and the questions being studied ▶ Bridges the gap between archaeologists and natural scientists Archaeological and Anthropological Sciences covers the full spectrum of natural scientific methods with an emphasis on the archaeological contexts and the questions being studied. It bridges the gap between archaeologists and natural scientists providing a forum to encourage the continued integration of scientific methodologies in archaeological research.Coverage in the journal includes: archaeology, geology/geophysical prospection, geoarchaeology, geochronology, palaeoanthropology, archaeozoology and archaeobotany, genetics and other biomolecules, material analysis and conservation science.
Progress in nanotechnology calls for material probing techniques of high sensitivity and resolution. Such techniques are also used for high-impact studies of nanoscale materials in medicine and biology. Soft X-ray microscopy has been successfully used for investigating complex biological processes occurring at micrometric and sub-micrometric length scales and is one of the most powerful tools in medicine and the life sciences. Here, we present the capabilities of the TwinMic soft X-ray microscopy end-station at the Elettra synchrotron in the context of medical and biological imaging, while we also describe novel uses and developments.
This paper presents new developments on the provenance study of lapis lazuli started by our group in 2008: during the years a multi-technique approach has been exploited to obtain minero-petrographic characterization and creation of a database considering only rock samples of known provenance. Since the final aim of the study is to develop a method to analyze archeological findings and artworks made with lapis lazuli in a completely non-invasive way, ion beam analysis techniques were employed to trace the provenance of the raw material used for the production of artifacts. Continuing this goal and focusing the analysis on determination of more significant minero-chemical markers for the provenance study of trace elements in different minerals, the method was extended with the use of micro X-ray fluorescence (µ-XRF), to test the potential of the technique for this application. The analyzes were focused on diopside and pyrite in lapis lazuli samples of known provenance (Afghanistan, Tajikistan, and Siberia). In addition, µ-XRF data were compared with micro proton-induced X-ray emission (µ-PIXE) results to verify the agreement between the two databases and to compare the analytical performance of both techniques for this application.
A thorough
understanding of the implications of chronic low-dose
exposure to engineered nanomaterials through the food chain is lacking.
The present study aimed to characterize such a response in Cucurbita pepo L. (zucchini) upon exposure to a potential
nanoscale fertilizer: copper oxide (CuO) nanoparticles. Zucchini was
grown in soil amended with nano-CuO, bulk CuO (100 mg Kg–1), and CuSO4 (320 mg Kg–1) from germination
to flowering (60 days). Nano-CuO treatment had no impact on plant
morphology or growth nor pollen formation and viability. The uptake
of Cu was comparable in the plant tissues under all treatments. RNA-seq
analyses on vegetative and reproductive tissues highlighted common
and nanoscale-specific components of the response. Mitochondrial and
chloroplast functions were uniquely modulated in response to nanomaterial
exposure as compared with conventional bulk and salt forms. X-ray
absorption spectroscopy showed that the Cu local structure changed
upon nano-CuO internalization, suggesting potential nanoparticle biotransformation
within the plant tissues. These findings demonstrate the potential
positive physiological, cellular, and molecular response related to
nano-CuO application as a plant fertilizer, highlighting the differential
mechanisms involved in the exposure to Cu in nanoscale, bulk, or salt
forms. Nano-CuO uniquely stimulates plant response in a way that can
minimize agrochemical inputs to the environment and therefore could
be an important strategy in nanoenabled agriculture.
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