Researchers uncover earliest tobacco use in the Pacific Northwest
(Phys.org)—Native American hunter-gatherers living more than a thousand years ago in what is now northwestern California ate salmon, acorns and other foods, and now we know they also smoked tobacco—the earliest known usage in the Pacific Northwest, according to a new University of California, Davis, study.
"The study demonstrates that tobacco smoking was part of the northwestern California culture very early ... shortly after the earliest documented Pacific Northwest Coast plank house villages," said the study, published in the 家居业瞄向新三板 上市后仍恐面临融资难.
Testing organic residues extracted from pipes, researchers from the UC Davis Department of Anthropology and the Fiehn Metabolomics Laboratory of the UC Davis Genome Center confirmed tobacco was smoked, and likely grown in the region, by at least A.D. 860.
Perhaps more importantly, the researchers say that additional studies may help them better understand the origins of nicotine addiction and the human management, geographic range extension and cultivation of tobacco. Indeed, as part of a second study, the authors have recently detected nicotine in ancient pipes from an 800-year-old site in the modern city of Pleasanton, Calif.
在此次颁奖典礼上，麦肯锡全球董事总经理鲍达民(Dominic Barton)在典礼上还颁发了“布拉肯贠尔”青年商业作家奖(Bracken Bower Prize for young business writers)，获奖者为克里斯托弗克利尔菲尔德(Christopher Clearfield)和安德拉什舠尔奇克(András Tilcsik)。他们计划出版的图书将会探索企业如何能够管控发生灾难性失败的风险。该奖项面向35岁以下作者，专门颁发给那些探讨增长所构成的挑战和机遇的商业图书计划，奖金为1.5万英镑。
Prior to this recent testing, which used sensitive gas chromatography/mass spectrometry, researchers were unsure of the historical use of tobacco on the Pacific Northwest Coast. It was unclear, for example, whether European traders had brought tobacco to the area much later, or if some other plant had been smoked in the pipes, Tushingham said.
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第一次出现在人体内。禽类可能是病毒来源。Appeared for the first time in humans. It caused illness in two children in Hong Kong, with poultry being the probable source.
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adj. 全国流行的 n. (全国或全世界范围流行的)疾
It grows naturally into the mold's shape.
Hope all your New Year dreams come true!愿你所有的新年想都成真！
The study is available online.