The increase in modern atmospheric CO₂ concentration (360 ppm) from
pre-industrial levels (280 ppm) raises concern over the impact of anthropogenic
carbon dioxide input on atmospheric chemistry. For this reason, it is important to
understand the natural fluctuations of atmospheric carbon dioxide in the past. The
Vostok ice core record...
Advancements in digital detector technology over the past decade have facilitated the transition of mammography image acquisition from film screen to full field digital applications. Nearly 90% of the mammography performed in the United States utilizes digital imaging technologies. The ability to capture the image information in an electronic format...
Osteochondrosis (OC) is a developmental orthopedic disease that results from a disruption to normal endochondral ossification in the articular-epiphyseal growth complex. In mammals, the hedgehog pathway and growth factor signaling are essential to this process. Previous studies in yearling horses with OC have shown upregulation of Indian hedgehog and insulin-like...
This study aimed to explore the relationship between grassroots activism, in the form of a plastic bag ban, and social capital. I postulated that grassroots activism would lead to higher levels of social capital. The data was collected through a survey distributed on community bulletin boards, an announcement at a...
Objective- To determine the average flexion and standing extension measurements for each limb articulation of alpacas and llamas and determine if there was any significant difference between the species’ measurements. Animals- Alpacas (n=6) and llamas (n=6) of the Oregon State University teaching herd. Methods- Each articulation was measured four times...
The National Council of Radiation Protection and Measurements
Report No. 49, originally issued on September 15, 1976, has been the
primary design guide for diagnostic x-ray structural shielding in the
United States. To further protect the public from various areas of
medical radiation exposure, NCRP issued Report 116 in 1987...
The height of an algebraic number A is a measure of how arithmetically complicated A is. We say A is totally p-adic if the minimal polynomial of A splits completely over the field of p-adic numbers. In this paper, we investigate what can be said about the smallest nonzero height...
Yellow starthistle (Centaurea solstitialis L.) is an introduced Asteraceae that has become established on 10 million acres in the Pacific Northwest and California. This weed functions as an annual or short-lived perennial and depends on seeds for reproduction. Strategies of control that reduce plant fitness or lower seed production or...
There are three recognized species of Siphateles from the Great Basin; S. alvordensis, S. boraxobius and the tui chub, S. bicolor. One species, S. boraxobius, is endangered and one population of tui chub at Hutton Spring is threatened. Despite several morphological and molecular studies, the taxonomy and relationships of tui...
Suspensory apparatus breakdown and hyperextension of the metacarpophalangeal and metatarsophalangeal (fetlock) joints is a common condition in the llama and has been observed in llamas of all ages. Llama breeders refer to the condition as "down in the pasterns" or "down in the fetlocks." The condition can result in debilitating...