نتایج جستجو برای: charred remains
تعداد نتایج: 270090 فیلتر نتایج به سال:
The earliest archaeological remains of dwelling huts built by Homo sapiens were found in various European Upper Paleolithic open-air camps. Although floors of huts were found in a small number of cases, modern organization of the home space that includes defined resting areas and bedding remains was not discovered. We report here the earliest in situ bedding exposed on a brush hut floor. It has...
In 2020, rescue excavations due to construction of a pipeline connecting Poland and Lithuania took place at the Bronze Age sites Tarbiškės 1 2, eastern Lithuania, both dated 1050–900 cal BC. They revealed rather homogeneous archaeological assemblage which fills gap in development culture economy southeastern Baltic. Ware, from typological as well chronological point view, stands an intermediate...
r.-Previous research has found that exposure to fire-related cues enhances germination of some plant species, and such species may exist in frequent-fire southwestern United States Pinus ponderosa forests. I performed four greenhouse experiments with Penstemon barbatus, a perennial forb common in P ponderosa forests, testing seed responses to liquid and air smoke, charred P ponderosa wood and l...
The structural transformations undergone by lignocellulosic biomass (freeze-dried rye grass, Lolium rigidum) subjected to progressive isothermal heating (burning at 350 degrees C under oxidizing conditions for 30, 45, 60, 75, and 90 s) have been monitored by Curie-point pyrolysis-gas chromatography-mass spectrometry (Py-GC-MS). The pyrograms suggest that even charred residues after severe heati...
Granular activated carbons are a very versatile group of adsorbents, with capability for selectively adsorbing thousands of organic and certain inorganic materials. From medicinal uses of powdered carbons in ancient Egypt, through charred interiors of whiskey barrels, carbon has been activated and used as an adsorbent for centuries. Granular vapor phase activated carbon media was first widely u...
In 1965, Yelena Rzevskaya, the blond interpreter whom Echtmann and Heusermann mentioned, published a report entitled «Berlin, May 1945» in a Soviet magazine. This work was published as a book and translated into numerous languages in 1967. This work told how the Russians discovered thirteen charred corpses in the gardens of the Chancellery, how, in the following days; they were examined by a Re...
Charred biomass generated by wildland fire has attracted increased interest as a functional component of terrestrial ecosystems. Black carbon (C) in the form of char is a widespread but unique material contributing to biogeochemical processes including long-term carbon storage and soil productivity. These functions have long been recognized by the biogeochemical and soil sciences, but have so f...
This study was conducted to propose an accurate measurement method of charred thickness in structural glued laminated timber (glulam) exposed standardized fire temperature conditions for evaluation the resistance Japanese larch (Larix kaempferi) glulam. The compressive strength test piece collected from glulam two hours analyzed. results showed that there residual 14% boundary area between soun...
The origins and development of rice cultivation are one the most important aspects in studying agricultural socio-economic innovations, as well environmental change, East Asian prehistory. In particular, whether wet or dry was conducted is an consideration its impact on societies environment across different periods places. this study, carbon nitrogen stable isotope analysis charred crop remain...
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