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 北京富亚涂料董事长蒋和平：国家货币政策对行业影响最大.
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.
Hugo Boss, Chevrolet and Kleenex dropped off the list, the report said.
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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.
Employers have stepped up their hiring recently, adding 171,000 jobs in October and an average of 157,000 a month so far this year. That's a better pace than last year and the strongest job growth since 2006, Labor Department data show.[qh]
We will step up the development of public facilities in rural areas.
Jackie Chan, a kung fu star and a member of the CPPCC National Committee, raised his experiences about smoking bans in China and Singapore as an example. During a business trip, his colleagues still smoked after a warning from a security guard in Zhuhai, Guangdong province, but they didn't dare smoke when they arrived in Singapore because "it was strict about smoking there".
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50个最优秀的“无工作经验要求”项目的所有毕业生中，三分之一以上毕业于英国的商学院。英国的商学院还吸引了近一半的女学生以及近一半的国际学生。实际上，2014年一个英国“无工作经验要求”金融硕士项目招收的学生中，有94%来自海外。这些学生当中约有85%来自欧洲经济区(European Economic Area)以外，55%来自中国内地。
The study is available online.