Results 71 to 80 of about 22,887 (225)

Effects of Acid Treatment on the SEM-EDX Characteristics of Kaolin Clay [PDF]

open access: yes, 2017
Raw kaolin was refluxed by sulphuric acid in variable concentrations of 2 M, 4 M, 6 M and 8 M. The morphology and elemental compositions of the acid-leached kaolin were analyse by Field Scanning Electron Microscopy (FESEM) and Energy Dispersive X-ray ...
Adamu, Ajiya Dahiru   +3 more
core   +3 more sources

Interaction and Networks in the Neolithic Funnel Beaker Culture

open access: yes, 2020
The study presented here deals with the ceramic grave goods recovered from a selection of megalithic tombs associated with the Funnel Beaker culture (more precisely with the TRB West Group) in Northwestern Germany. The main focus of this particular study was on the sociocultural and economic links between the individual funerary communities as ...
openaire   +2 more sources

Effect of Unit Cell Topology on Dielectric Properties of Periodic Lattice Materials Used for Functionally Graded Insulation

open access: yesHigh Voltage, EarlyView.
ABSTRACT Periodic lattice material (PLM) is an innovative material system capable of rapidly and efficiently constructing functionally graded materials (FGMs). Among various PLM structures, triply periodic minimal surfaces (TPMS) exhibit numerous advantages, making TPMS‐based lattice materials a potential candidate to electrical FGMs.
Zihao Liu   +7 more
wiley   +1 more source

Precipitation Protocols [PDF]

open access: yes, 2003
The purpose of this activity is to determine the amount of moisture input to the local environment by measuring rain and snowfall and to measure the pH of precipitation.
The GLOBE Program, UCAR (University Corporation for Atmospheric Research)
core  

Aquatic Invertebrates of the Devereux Slough - 2018 [PDF]

open access: yes, 2020
In 2018, the hardscape construction of NCOS (North Campus Open Space), a restored wetland on the Northern border of COPR (Coal Oil Point Reserve), was completed, thus approximately doubling the overall size of the wetland and offering the rather unique ...
Peng, Victoria   +2 more
core  

Ram cult of funnel beaker culture tribes

open access: yesMaterials and studies on archaeology of Sub-Carpathian and Volhynian area, 2019
Among the variety of clay products of the Funnel beaker culture, there is almost no zoomorphic plastic. Such items include the handle of the vessels in the form of realistically shaped heads of the ram. And it is the only animal in the Funnel beaker culture, which is somehow expressed.
openaire   +2 more sources

Learning Across the Divide: Understanding Knowledge Sharing Through Petrographic Analysis on Ceramics From the Rhine‐Meuse Delta During the Middle to Late Neolithic Transition (3400–2200 bce)

open access: yesArchaeometry, EarlyView.
ABSTRACT Vlaardingen (VL) communities on the Dutch West coast (3400–2200 bce) are part of a unique, long‐term continuity in the European Neolithic. Despite large‐scale changes in European populations during the Neolithic, the genomic diversity and cultural practices of VL communities can be retraced to the Mesolithic.
Jisca de Bruin   +3 more
wiley   +1 more source

Do 14C dates always turn into an absolute chronology? The case of the Middle Neolithic in western Lesser Poland

open access: yesDocumenta Praehistorica, 2017
In the late 5th, 4th, and early 3rd millennia BC, different archaeological units are visible in western Lesser Poland. According to traditional views, local branches of the late Lengyel-Polgár complex, the Funnel Beaker culture, and the Baden phenomena ...
Marek Nowak
doaj   +1 more source

Sickles of the Funnel Beaker culture in the light of use-wear and residue analysis [PDF]

open access: yesSprawozdania Archeologiczne, 2019
The aim of this paper is to present new data on the use of plants and on flint management by Funnel Beaker societies. Studies of usewear and residues on flint tools from the Polwica-Skrzypnik site complex located in SW Poland included microscopic analyses of traces, starch and phytoliths, and adhesives.
Kufel-Diakowska, Bernadeta   +4 more
openaire   +2 more sources

Development of CCMb: A Low‐Mg Calcite Reference Material for In Situ Measurement of δ18O, δ13C and Selected Trace Elements

open access: yesGeostandards and Geoanalytical Research, EarlyView.
Key Points Low‐Mg calcite RM developed for in situ microanalysis applications in palaeoclimatology (δ18O, δ13C; Mg, Sr m/m). New data for calcite CRM IAEA‐603 (δ18O, δ13C by SIMS and GS‐IRMS; Mg m/m). No detectable IMF effect of Mg on SIMS δ18O determinations for mass fractions < 3650 μg g‐1.
Andreas T. Hertwig   +13 more
wiley   +1 more source

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