Cirque aspects and elevations in the major highlands of Oregon indicate a pattern of climate during the Pleistocene similar to that of today. Mean cirque floor elevation increases toward the drier interior. Concentrations of cirques facing northeast, and steep gradients of cirque floor trend surfaces to the southwest, indicate a...
In the past decade, issues related to cultural diversity and pluralism
have risen to the forefront in education. The increasing cultural diversity in
American classrooms and communities requires preservice teachers to be
ready to promote multiple perspectives within their curricula and among their
students. The purpose of this study was...
Accurately monitoring tropical forest carbon stocks is a challenge that remains outstanding. Allometric models that consider tree diameter, height and wood density as predictors are currently used in most tropical forest carbon studies. In particular, a pantropical biomass model has been widely used for approximately a decade, and its most...
Full Text:
, Duncan Thomas17,
Donatien Zebaze3, Pierre Couteron1, Uta Berger18, and Raphaël Pélissier1
1Institut de
Sedimentation rate could become a new exploration tool for evaluating
the source rock potential of sedimentary basins in frontier regions.
Petroleum source rocks are defined on the basis of total organic carbon
by weight percent. An analysis of Deep Sea Drilling Project (DSDP)
cores indicates that there exists quantitative relationships...
Published February 1957. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Near-surface advanced argillic hydrothermal alteration zones, also referred to as lithocaps, are characterized by quartz, alunite, clays (pyrophyllite and kaolinite group minerals), and minor F-bearing aluminosilicates (i.e., topaz, zunyite, diaspore, and APS) that form where water-, SO2-, and HF-rich gas condenses into shallow groundwater, acidifies, and reacts with rocks. The...
This research employed both quantitative and qualitative research methodologies to
explore the impact of mobile wireless technology (MWT) in higher education classrooms.
The methodology was developed using systems engineering concepts. A methodology to
evaluate and compare the cost, cost-effectiveness and cost-utility of different MWT
configurations was also developed. Five outcomes...
Ungulates comprise some of the most well researched and intensely managed wildlife populations on earth. As such, they are recognized as ideal study subjects for developing and modifying management tools or theories (Danell et al. 1994, Shipley 2010). An introduced moose (Alces alces gigas) population on the Copper River Delta...
Forest management is rapidly undergoing a transformation from a discipline based on efficient commodity production to one for multiple uses, especially on federally managed land in the United States. This new management paradigm has challenged silviculturists to develop and adapt forest management techniques that can deal with increased demands. Using...
Anaerobic digestion is a microbially mediated process by which organic matter is decomposed in the absence of oxygen. The end products of anaerobic digestion include treated sludge and biogas, a mixture of methane and carbon dioxide, which can be recovered and used for energy generation. The majority of wastewater treatment...