scholarly journals THE NORTH AMERICAN BLUE BUTTERFLIES OF THE GENUS NOMIADES

1876 ◽  
Vol 8 (2) ◽  
pp. 21-24
Author(s):  
Samuel H. Scudder
Keyword(s):  
North American ◽  
Structural Features ◽  
The North ◽  
Pacific Slope

Some years ago I proposed the generic name Glaucopsyche for a group of blue butterflies of eastern N. America having a glaucous sheen to the upper surface of their wings; I had not then recognized its strictly generic alliance with a group of similar forms in Europe and on our pacific slope, which do not all possess this peculiarity, and to which the older generic name Nomiades Hübn. must be applied. A recent study of their common structural features, however, shows that GlacoPsychw can no longer be retained.

Taxonomy and biostratigraphy of Coniacian through Maastrichtian Anchura (Gastropoda: Aporrhaiidae) of the North American Pacific Slope

1996 ◽  
Vol 70 (3) ◽  
pp. 381-399 ◽  
Author(s):  
William P. Elder ◽  
L. R. Saul
Keyword(s):  
New Species ◽  
Late Cretaceous ◽  
North American ◽  
Southern California ◽  
Northern California ◽  
The North ◽  
The Pacific ◽  
Slope Deposits ◽  
Pacific Slope

North American Pacific Slope deposits of Coniacian to Maastrichtian age have yielded eight biostratigraphically useful species of Anchura: A. (Helicaulax?) popenoei new species, Coniacian; A. halberdopsis new species, early Campanian; A. callosa Whiteaves, 1903, early Campanian; A. falciformis (Gabb, 1864), late early to middle Campanian; A. phaba new species, middle to late Campanian; A. ainikta new species, middle to late Campanian; A. gibbera Webster, 1983, late Campanian to early Maastrichtian; A. baptos new species, late Maastrichtian to early Danian. In addition, two other possible species are A. nanaimoensis (Whiteaves, 1879), middle to late Campanian, and Anchura? new species, late Maastrichtian. These species together with two additional Turonian species, A. (Helicaulax) tricosa Saul and Popenoe, 1993, and A. (H.) condoniana Anderson, 1902, allow the definition at least eight Late Cretaceous Anchura zones for the Pacific Slope. These zones have durations of 1.5 m.y. to 4 m.y.Anchura (H.?) popenoei from northern California appears most closely related to A. (Helicaulax) tricosa Saul and Popenoe, 1993, of Turonian age from southern California. Anchura callosa, A. falciformis, A. nanaimoensis, and A. phaba appear to be closely related based on sculptural elements, as does A. gibbera despite having an anterior spur on the wing. However, these species appear to belong to two latitudinally differentiated faunal provinces. Species having a northern range include A. callosa, A. falciformis, and A. nanaimoensis, whereas A. phaba and A. gibbera are from more southern deposits, as are also A. halberdopsis, A. ainikta, and A. baptos.

1588: The Bicalutamide Early Prostate Cancer Program: Findings of the North American Trial at 7.7 Years' Median Follow-Up

2006 ◽  
Vol 175 (4S) ◽  
pp. 511-512
Author(s):  
David G. McLeod ◽  
Ira Klimberg ◽  
Donald Gleason ◽  
Gerald Chodak ◽  
Thomas Morris ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
North American ◽  
Early Prostate Cancer ◽  
The North ◽  
Cancer Program

Endoscopic Skull Base Surgery Practice Patterns: Survey of the North American Skull Base Society

2013 ◽  
Vol 74 (S 01) ◽  
Author(s):  
Pete Batra ◽  
Jivianne Lee ◽  
Samuel Barnett ◽  
Brent Senior ◽  
Michael Setzen ◽  
...  
Keyword(s):  
Skull Base ◽  
North American ◽  
Practice Patterns ◽  
Skull Base Surgery ◽  
Endoscopic Skull Base Surgery ◽  
The North

Transactions in science in comparative perspective

2018 ◽  
pp. 52-69
Author(s):  
A. N. Oleinik
Keyword(s):  
Transaction Costs ◽  
Academic Freedom ◽  
North American ◽  
Institutional Environment ◽  
Scientific Productivity ◽  
Institutional Environments ◽  
Academic Administrator ◽  
The North ◽  
American Case ◽  
Transactional Approach

The article develops a transactional approach to studying science. Two concepts play a particularly important role: the institutional environment of science and scientific transaction. As an example, the North-American and Russian institutional environments of science are compared. It is shown that structures of scientific transactions (between peers, between the scholar and the academic administrator, between the professor and the student), transaction costs and the scope of academic freedom differ in these two cases. Transaction costs are non-zero in both cases, however. At the same time, it is hypothesized that a greater scope of academic freedom in the North American case may be a factor contributing to a higher scientific productivity.

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