ANDREW ELLICOTT DOUGLASS
نویسندگان
چکیده
منابع مشابه
Andrew Ellicott Douglass and the Giant Sequoias in the Founding of Dendrochronology
The Giant Sequoia played several crucial roles in the founding of the modern science of tree -ring dating. These included at least two central theoretical constructs and at least two minor ones; however, historical studies of dendrochronology are actively continuing and this list is expected to expand. Second only to the importance of the ponderosa pine (Pinus ponderosa) in the earliest days of...
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A nationwide survey was undertaken to determine the rate of complications due to coronary arteriography during 1970-71. The responses from 173 hospitals-including a total of 46,904 coronary arteriograms-were analyzed in relationship to the technique employed and to the number of examinations performed at each hospital during the two-year period. The overall mortality rate was 0.45% (brachial 0....
متن کاملAndrew Ford
This paper describes simulated scenarios for power plant construction in the western United States. The simulations show construction lagging behind the growth in demand, allowing prices to climb to surprisingly high values during the years 2000 and 2001. When construction is completed, new power plants come on line in great number, allowing market prices to fall surprisingly rapidly in the yea...
متن کاملAndrew Travers
kinds of molecules can also work as recruiters. Double-stranded RNA, for example, directs the RNA interference machinery to specific sequences in mRNA and in DNA, and thereby regulates a form of gene silencing. Signals typically are conveyed to recruiters and, as implied by the discussion thus far, not to the enzymatic machineries themselves. For example, the sugar galactose (which we’ll call a...
متن کاملAndrew Granville )
On the 800th anniversary of the publication of Liber Abaci, I wish to draw the attention of the reader to some of my favorite facts about Fibonacci numbers concerning squares, multiples of squares and powerful numbers amongst the Fibonacci numbers.
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ژورنال
عنوان ژورنال: Science
سال: 1901
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.14.354.570