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Structure of tetrakis((1,3-diethyl-2-thiobarbiturato)(butanol-1))dicobalt(II)
The structure of the dimeric complex [Co2(BuOH)4(Detba)4] (I), where НDetba is 1,3-diethyl-2-thiobarbituric acid, and BuOH is butanol-1, is determined (CIF file CCDC 1475273), and its IR spectrum is studied. The crystals ...
Quantum properties of a parametric four-wave mixing in a Raman-type atomic system
We present a study of the quantum properties of two light elds used to parametric four-wave mixing in a Raman type atomic system. The system realizes an e ective Hamiltonian of beamsplitter type coupling between the light ...
Last millennium Northern Hemisphere summer temperatures from tree rings: Part II, spatially resolved reconstructions
Climate field reconstructions from networks of tree-ring proxy data can be used to characterize regionalscale climate changes, reveal spatial anomaly patterns associated with atmospheric circulation changes, radiative ...
First dendro-archaeological evidence of a completely excavated medieval settlement in the extreme north of Western Siberia
The Buchta Nakhodka settlement is the only archaeological site in the northern part of Western Siberia that has been fully excavated. This well-preserved settlement on Russia’s Yamal Peninsula around 67° N and 72° E, however, ...
ЭКСТРЕМАЛЬНЫЕ КЛИМАТИЧЕСКИЕ СОБЫТИЯ В ЦЕНТРАЛЬНОМ АЛТАЕ ЗА ПОСЛЕДНИЕ 1500 ЛЕТ ПО ДАННЫМ ДРЕВЕСНО-КОЛЬЦЕВОЙ ХРОНОЛОГИИ JELO
На основе анализа встречаемости нарушений анатомической структуры годичных колец (морозобойные и светлые кольца, флюктуации в структуре годичного кольца) и выпавших колец была построена хронология климатических экстремумов ...
Reply to 'Limited Late Antique cooling'
We discuss the combined efficacy of environmental, archaeological and historical indicators in establishing a prolonged period of cold summers across much of the Northern Hemisphere landmass between 536 and about 660 AD, ...