Zobrazeno 1 - 10
of 667
pro vyhledávání: '"Ryan I"'
Publikováno v:
Frontiers in Earth Science, Vol 10 (2023)
Quantification of long-term hydrologic change in groundwater often requires the comparison of states pre- and post-change. The assessment of these changes in ungauged catchments using numerical models and other quantitative methods is particularly di
Externí odkaz:
https://doaj.org/article/2290a528a6484136a16526c13f990d5f
Autor:
Ryan I. Logan
Publikováno v:
Qualitative Research in Medicine & Healthcare, Vol 2, Iss 3 (2018)
Few studies have conducted photovoice projects to explore themes related to the lived experiences of community health workers (CHWs). As a relatively unknown segment of the health care workforce in the United States, CHWs are typically members of the
Externí odkaz:
https://doaj.org/article/c52d3da9847546539ec0440dacb25273
Publikováno v:
Insects, Vol 10, Iss 7, p 209 (2019)
When confronted with an adaptive radiation, considerable evidence is needed to resolve the evolutionary relationships of these closely related lineages. The North American genus Speyeria is one especially challenging radiation of butterflies due to p
Externí odkaz:
https://doaj.org/article/0507fda9d3874708806321354cd319c9
Larval Food Limitation in a Speyeria Butterfly (Nymphalidae): How Many Butterflies Can Be Supported?
Publikováno v:
Insects, Vol 9, Iss 4, p 179 (2018)
For herbivorous insects the importance of larval food plants is obvious, yet the role of host abundance and density in conservation are relatively understudied. Populations of Speyeria butterflies across North America have declined and Speyeria adias
Externí odkaz:
https://doaj.org/article/ff968f77530b4098a291b3f48e78cb98
Autor:
Ryan I. Hill, Maya Ganeshan, Lindsay Wourms, Marcus R. Kronforst, Sean P. Mullen, Wesley K. Savage
Publikováno v:
Diversity, Vol 10, Iss 4, p 130 (2018)
North American Speyeria butterflies are a group of conservation concern and a challenge to butterfly systematists. Establishing species delimitation and evolutionary relationships among Speyeria has proven difficult due to the polytypic nature of man
Externí odkaz:
https://doaj.org/article/4c3fadc839504904b31c0908415368b9
Autor:
Ryan I. Fernandes, Behrouz Emamizadeh
Publikováno v:
Electronic Journal of Differential Equations, Vol 2008, Iss 65, Pp 1-11 (2008)
In this paper we consider two optimization problems related to the principal eigenvalue of the one dimensional Schrodinger operator. These optimization problems are formulated relative to the rearrangement of a fixed function. We show that both probl
Externí odkaz:
https://doaj.org/article/643fcc8817a4407ba9388bda4b668678
Publikováno v:
PeerJ, Vol 3, p e1144 (2015)
Drag area (Ad) is a primary factor determining aerodynamic resistance during level cycling and is therefore a key determinant of level time trial performance. However, Ad has traditionally been difficult to measure. Our purpose was to determine the v
Externí odkaz:
https://doaj.org/article/06e38f17035146689029bf995a3c49d8
Autor:
Sharpe, Richard E., Jr., Huffman, Ryan I., McLaughlin, Christopher G., Blubaugh, Patrick, Strobel, Mary Jo, Palen, Ted
Publikováno v:
In Journal of the American College of Radiology March 2023 20(3):324-334
Autor:
Hill, Ryan I.
Publikováno v:
Evolution, 2021 Oct 01. 75(10), 2460-2479.
Externí odkaz:
https://www.jstor.org/stable/48636372