نتایج جستجو برای: from 200 years befor

تعداد نتایج: 6102257  

Journal: :Advances in archaeomaterials 2021

Recent new evidence emerged from the crucible steel production site of Konasamudram, Telangana, India. A hoard 60 ingots this offers a unique opportunity to study details early large-scale fabled material, beginning with detailed documentation weights and sizes 45 them. Historically, Konasamudram has been an important pre-modern manufacturing trading centre in India, as reported by Persian Euro...

2002
Elizabeth A. Walls Jim Berkson Stephen A. Smith

Management of the horseshoe crab, Limulus polyphemus, is currently surrounded by controversy. The species is considered a multiple-use resource, as it plays an important role as bait in a commercial fishery, as a source of an important biomedical product, as an important food source for multiple species of migratory shorebirds, as well as in several other minor, but important, uses. Concern has...

Journal: :Climate of The Past 2023

Abstract. Volcanic eruptions are the dominant cause of natural variability in climate forcing on timescales up to multidecadal. Large volcanic lead global-scale effects and influence carbon cycle long timescales. However, estimating frequency is challenging. Here we assess at which with particular deposition fluxes observed EPICA Dome C ice core over last 200 kyr. Using S isotope analysis confi...

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