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 地价超2万限价卖3万 开发商要“亏本”卖房？.
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.
China has ample foreign exchange reserves to satisfy the demands of imports and short-term debt repayments.
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.
Politics also color perceptions of the weather, the survey found. More than three-quarters of Democrats and six in 10 independents believe that the weather has become more extreme over the last few years, while less than half of Republicans say they have perceived such a shift.
All or most of the municipal government's departments will move, as the office buildings are scheduled to be completed that year.
The drama won much praise for its use of slow motion when shooting martial arts.
Employees of state-owned firms also expressed more satisfaction with their bonuses than those at private companies – and little wonder, as the average payout at the former was Rmb17,318, or about Rmb6,000 more than what their private-sector counterparts could expect.
圣保罗报的民意调查是基于在贝洛奥里藏特（Belo Horizonte）的米内朗球场（ Mineirao）对693名球迷进行的采访，统计误差为4%左右。
1. Peaceful Era
现在让我们去希腊。在2010年至2015年期间担任希腊统计局(Elstat)局长的安德烈亚斯?耶奥尔耶欧(Andreas Georgiou)，因揭露希腊2009年公共财政虚假数据并更正数据而面临指控。本周，以美国统计协会(American Statistical Association)为首的40个组织和651名个人签署声明，支持耶奥尔耶欧。
A Beijing cancer specialist who didn't want to be named said on Sunday that although there is no excuse for compromising scientific credibility, the incident reveals a widespread dilemma facing Chinese physicians who struggle to strike a balance between overloaded daily work schedules and academic requirements, primarily publishing papers to secure professional development and promotion.
The study is available online.