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Site formation processes at ancient tells in the southern Levant have been the focus of several micromorphological studies, contributing to the differentiation of anthropogenic remains from long-term natural sedimentation, occurring post-abandonment. This paper discusses how the study of sedimentary processes and chemical compositions of sediments can be used within the context of an ongoing archaeological project, and how they can contribute to archaeological, historical and geomorphological interpretations. Sedimentary processes were studied implementing POSL, granulometry and PXRF as part of the archaeological research at Tel Burna, Israel. Focusing on the area along the northwestern fortification walls (Area B2), data was collected from multiple strata inside and outside the casemate fortifications dating from the Late Bronze Age to the Late Iron Age. The gradual increase of OSL values obtained inside the casemate wall, indicate accumulation of sediment during a long period of time. Whereas similar values along the entire profile outside the casemate wall indicate sediment accumulation in one-time event. This might be related to defensive preparations, allegedly in response to advances made by Sennacherib's army in 701 BCE. In addition, results from the PXRF studies demonstrated correlation between human activities and the Cu, P, K, Zn, Mn values. Specifically, it was found that as K content increased from younger to older periods, it can be used as a pseudo-dating element. Ca content decreased as sampling descended from the tell's surface, suggesting its origin in long-term aeolian processes. The results show that the use of POSL and PXRF on archaeological contexts are useful for determining sedimentary processes. Furthermore, chemical content enabled pseudo-dating of strata and facilitated the distinction between natural and anthropogenic processes in archaeological sites and landscape.

Human settlement activities have caused changes in soil chemical properties that might remain preserved in the soil archive for a very long time. These traces might be close to irreversible on the timescale of known civilizations. Our study explores the potential of an extensive mapping of the multi-elemental composition of soil and buried sediments by a portable XRF spectrometer, using the Tel Burna site in the southern Levant as a case study. The tell, dating from the 3rd to the 1st millennium BCE, is known as a Bronze Age Canaanite settlement, and later in the Iron Age as a stronghold on the historic border between the Kingdom of Judah and Philistia. We compared the results of our geochemical survey conducted on the surface layer of contemporary soil with the data acquired by the same method from the archaeological stratigraphy exposed during excavations of the site. We found that handheld XRF spectrometry can reveal archaeologically meaningful patterns of the multi-elemental composition of soils and sediments in the horizontal plane, as well as in vertical profiles. Such patterns correspond to areas and loci of ancient settlement activities, dated to millennia ago. This methodology, if used critically, provides a rapid and cost-effective analysis of soil chemical composition that can significantly enhance our understanding of archaeological sites in arid environments.

Lovětin was a medieval village located in the Bohemian-Moravian Upland (Czech Republic). It existed approximately between the 14th and the 16th century and was comprised of up to 20 farmsteads. Arable farming based on a short-fallow cultivation system was its main means of subsistence. The fields of the village consisted of two main field areas (128 and 77 ha) and six smaller field areas (up to 8 ha). Our study focused on finding out how human activities have impacted the soil environment imprinted in its geochemical characteristics. The design was based on a 100-m grid (in some cases, a 50-m grid) covering the entire field system (plužina) of the village; soil samples were taken from the B horizon at a depth of 15 cm. The analysis was based on XRF spectrometry, returning near total concentrations of the elements. The statistical and GIS analyses were performed on 338 samples, measuring the following elements: Al, Si, K, Ti, Cr, Mn, Fe, Ni, Cu, Zn, As, Rb, Sr, Zr, Pb, Th, LE (light elements – combined concentrations for H to Na). The results of the analyses were processed by PCA after ilr transformation. The PCA indicated 16 principal components, of which three were interpreted as direct products of past human activities. The main elements reflecting human activities were Mn, Sr, Th, K, Zn; P contributed also to the interpretations, although it was detected and measured only in 132 cases. Some of the elements were spatially connected to the village in terms of their concentrations, but the PCA did not reveal a strong connection (Ti, Cr, Ni, Cu, Zr). The spatial distribution of the principal components was varied, indicating a diversity in the spatial distribution of agricultural activities or of their intensity, as well as differences in land use management. Management was most intensive in the vicinity of the village built-up area up to a distance of 300–400 m. The village was probably deserted due to inadequate soil management strategies.

Human settlement activities are connected with the accumulation of nutrients in archaeological soils. We address the question of whether the large-scale mapping of the elemental composition of the topsoil in contemporary rangeland can be used for the detection of ancient settlement activities. Using portable X-ray fluorescence (pXRF), we mapped the elemental composition of contemporary soils over an area of 67 ha in and around the Bronze and Iron Age settlement of Tel Burna (identified as probably corresponding with biblical Libnah). Ancient settlement activities substantially increased concentrations of nutrients (P, K, S, Zn and Cu) in the contemporary topsoil owing to the deposition of biomass ashes and organic wastes. Increased concentrations of elements were detected 2500 years after the site was abandoned and we can therefore suppose that changes in the elemental composition of the soil caused by ancient settlement activities are irreversible on a timescale in which human societies operate. Ancient settlement activities increased concentrations of nutrients in contemporary soil to the same level as recent intensive fertiliser application on an adjacent arable field used for vegetable production. Concentrations of nutrients higher than those on the tell summit were recorded only in recent cattle resting areas with intensive deposition of cattle faeces. Changes in the elemental composition of the soil caused by ancient settlement activities consequently result in differential nutrient availability for contemporary vegetation, affecting ecosystem functions for thousands of years. Using pXRF, large-scale mapping of the elemental composition of the topsoil layer at archaeological sites can help to identify the extent and provide basic information on the character of past human activities in the affected landscape units.

Can less than a hundred years of past settlement activities in former European settlements substantially increase the concentration of elements and result in the formation of African Dark Earth soil is a question not addressed. We performed multi–element analysis of Africa Dark Earth soil from a late 19th to mid–20th century CE former German–Togoland settlement, Ziavi–Galenkuito in the Volta Region, Ghana. Relatively neutral reaction and black color of soil mainly from charcoal inclusion in the settlement site contrasted highly with moderately acidic brown Ferric Acrisol in the control located on the same metasedimentary/Voltaian bedrock. Organic C and total N, P, K, Ca, Mn, Fe, Cu, Zn, Sr and Rb concentrations were substantially increased and vice–versa for the C/N ratio in the 0–40 cm layer of the settlement soil compared to the control without settlement activities. The concentrations of plant–available P, K, Ca, S, Fe, Cu and Zn were higher in the settlement soil in comparison to the control. The increased concentrations of the elements mentioned above resulted in the disposition of organic waste and biomass ash. Significantly higher concentrations of total and plant–available elements in 0–10, 10–20 and 20–40 cm layers of settlement site compared to their respective control suggested that chemical signatures from past settlement activities can be determined even in the upper soil layer. Positive correlations between the concentration of P and K, Mn, Sr, Fe, Ca, Zn, Rb, Cu implied that these elements were indicators of past settlement activities. The concentrations of total and plant–available P, K, Ca, Fe, Cu and Zn were well correlated; however, total elements concentrations are much suitable for geoarchaeological purposes as it is easy to calculate enrichment factors. We concluded that intensive human settlement activities in even

Past human activities can be reflected in the elemental composition of contemporary soils. We asked how much historical land-use identified according to historical maps is reflected by the multi-elemental signatures of soils in an originally medieval village abandoned after WWII. Using X-ray fluorescence spectrometry, we determined the content of 24 elements in soil samples from former arable fields, field boundaries, forests, built-up area, and permanent grasslands. Previous human activities were connected with the accumulation of 13 elements such as the usually thus interpreted P, Ca, Zn, and Cu, but also with elements rarely used in archaeological studies such as Mg, K, V, Cr, Mn, Fe, Ni, Rb, Zr, and Sr. The content of P, Ca, Cu, Zn, Ni, Fe, V, Cr, and Zr decreased on former fields with the distance from the most enriched built-up area. This can be explained by the most intensive deposition of biomass ashes and manuring of gardens and fields close to the village. With the exception of Pb accumulated sub-recently because of aerial deposition, the lowest content of anthropogenic elements was recorded in continuous forest. The chemical signatures recorded were much stronger than those in previously studied medieval villages in the Czech Republic abandoned in the 15th or 16th centuries. This is because of the long period of the settlement’s existence since medieval times and in addition because of the short time since its abandonment. Although frequently neglected, the multi-elemental composition of soils in deserted settlements can be considered as cultural heritage similarly to the relicts of buildings or still visible field patterns.

Out of hospital cardiac arrest (OHCA) has a poor outcome. Recent non-randomized studies of ECLS (extracorporeal life support) in OHCA suggested further studies to define population that would benefit from ECLS. Ongoing prospective randomized study compares prehospital intraarrest hypothermia

The Svelte (New Providence, NJ) sirolimus-eluting coronary stent utilizing a bioresorbable amino acid-based (PEA) drug carrier is mounted on a novel Integrated Delivery System (IDS) consisting of a low-compliant balloon with balloon control bands (BCBs) affixed to a 0.014 integrated wire with

To the Editor: One-third of patients with ST-segment elevation myocardial infarction, usually those presenting late, show ongoing left ventricular (LV) remodeling and poor clinical outcome despite primary percutaneous coronary intervention (PCI) ([1][1]). Cardiac transfer of bone marrow-derived stem