نتایج جستجو برای: appalachian orogen

تعداد نتایج: 3081  

Journal: :Gondwana Research 2021

Abstract The Sao Francisco Craton (SFC) and its marginal Aracuai Brasilia orogens exhibit a significant diversity in their lithospheric architecture. These were shaped during the Neoproterozoic–Cambrian amalgamation of West Gondwana. rigid cratonic lithosphere SFC relatively weak Orogen disrupted Cretaceous opening South Atlantic Ocean, whereas remained continental hinterland. In earlier resear...

2012
Bodo Bookhagen Manfred R. Strecker

a r t i c l e i n f o Keywords: erosion landscape evolution specific stream power cosmogenic radionuclides paleoclimate climate-tectonic feedback processes The tectonic and climatic boundary conditions of the broken foreland and the orogen interior of the southern Central Andes of northwestern Argentina cause strong contrasts in elevation, rainfall, and surface-process regimes. The climatic gra...

Journal: :Current Biology 2009
Richard M. Merrill Chris D. Jiggins

Color pattern mimicry has long been held up as a powerful example of natural selection. A recent study supports the theory by describing Müllerian mimicry rings in Appalachian millipedes that are analogous to those observed in tropical butterflies.

Journal: :Frontiers in Oncology 2023

Background Appalachia is a region with significant cancer disparities in incidence and mortality compared to Kentucky the United States. However, contribution of these health subsequent primary cancers (SPCs) among survivors adult-onset limited. This study aimed quantify overall type-specific risks SPCs by first (FPC) types, residence sex. Methods retrospective cohort from Cancer Registry inclu...

Journal: :Journal of dental education 2003
Paul B Osborne James E Haubenreich

The purpose of this investigation was a retrospective analysis of a select group of graduates from the University of Kentucky College of Dentistry (UKCD) over a thirty-year history to determine how many of these individuals came from the Appalachian Region of Eastern Kentucky, which historically has been economically depressed and underserved by health care practitioners including dentists. Thi...

Journal: :American journal of botany 1998
H Huang F Dane T Kubisiak

Genetic variation among 12 populations of the American chestnut (Castanea dentata) was investigated. Population genetic parameters estimated from allozyme variation suggest that C. dentata at both the population and species level has narrow genetic diversity as compared to other species in the genus. Average expected heterozygosity was relatively low for the population collected in the Black Ro...

Journal: :Cancer control : journal of the Moffitt Cancer Center 2007
Kimberly M Kelly Clarenda M Phillips Crystal Jenkins Gretchen Norling Carol White Todd Jenkins Debra Armstrong Joe Petrik Amy Steinkuhl Regina Washington Mark Dignan

BACKGROUND Data indicate that in 1997 to 1999, only 44% of Appalachian Kentuckians underwent colorectal cancer screening consistent with guidelines. We investigated the reasons for, barriers to, and follow-up of colorectal cancer (CRC) screening recommendations in primary care practices seeing patients from Appalachian Kentucky. METHODS A mixed-methods [qualitative (focus group) and quantitat...

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