Digital Commons Network^™

Material Culture And Sacred Landscape: The Anthropology Of The Siberian Khanty, Thomas J. Pluckhahn

Journal of Ecological Anthropology

No abstract provided.

The Hot And The Cold: Ills Of Humans And Maize In Native Mexico, Cameron Adams

Journal of Ecological Anthropology

No abstract provided.

Comparison Of Crenarchaeal Consortia Inhabiting The Rhizosphere Of Diverse Terrestrial Plants With Those In Bulk Soil In Native Environments, Marek K. Sliwinski, Robert M. Goodman

Faculty Work

To explore whether the crenarchaeal consortium found in the rhizosphere is distinct from the assemblage of crenarchaeotes inhabiting bulk soil, PCR-single-stranded-conformation polymorphism (PCR-SSCP) profiles were generated for 76 plant samples collected from native environments. Divergent terrestrial plant groups including bryophytes (mosses), lycopods (club mosses), pteridophytes (ferns), gymnosperms (conifers), and angiosperms (seed plants) were collected for this study. Statistical analysis revealed significant differences between rhizosphere and bulk soil PCR-SSCP profiles (Hotelling paired T2 test, P < 0.0001), suggesting that a distinct crenarchaeal consortium is associated with plants. In general, phylotype richness increased in the rhizosphere compared to the corresponding bulk soil, although the range of this increase was variable. Examples of a major change in rhizosphere (versus bulk soil) PCR-SSCP profiles were detected for all plant groups, suggesting that crenarchaeotes form associations with phylogenetically diverse plants in native environments. In addition, examples of minor to no detectable difference were found for all terrestrial plant groups, suggesting that crenarchaeal associations with plants are mediated by environmental conditions.

The Effects Of Gestational Perchlorate Exposure On Development And Behavior In Rats, Sally Ann Hopper

UNLV Retrospective Theses & Dissertations

Pregnant Long Evans rats were exposed to ammonioum perchlorate in their drinking water at doses of 0.8 mg/kg-day and 8.7 mg/kg-day (or at concentrations of 5.0 mg/L perchlorate and 50.0 mg/L perchlorate) from GD 7-GD 21. The offspring were observed for developmental landmarks and tested in a battery of behavior trials. Dams exposed at the 5.0 mg/kg-day perchlorate exhibited delayed or deficient responses in the number of pups per dam, pinna unfolding, negative geotaxis, startle response IP on PND 61, figure 8 maze on PND 21, and a more reactive tactile startle response on PND 21. Pups exposed at the …

Friends Of Red Rock Canyon Quarterly Meeting, Public Lands Institute

Presentations (PLI)

The Public Lands Institute is dedicated to strengthening the national fabric that is essential for the protection, conservation, and management of public lands.

Investigation Of Optical Spectroscopy Techniques For On-Line Materials Accountability In The Solvent Extraction Process, Gary Cerefice, Kenneth Czerwinski

Safeguards Campaign (TRP)

The goal of this project is to examine the potential for using optical spectroscopy techniques, such as UV-Visible Spectroscopy and Laser Fluorescence Spectroscopy, for special nuclear materials accountability applications for the UREX+ and other solvent extraction processes. To increase the inherent proliferation resistance of the solvent extraction process, it is necessary to develop on-line techniques to directly measure the concentrations of special nuclear materials in-process. By providing on-line materials accountability for the processes, the potential for covert diversion of the materials streams becomes much more difficult to implement. On-line monitoring of material streams will also allow for improved plant operation, …

Extraction Of Paleohydrology And Paleoclimate Proxies From Vadose Zones And Paleolake Records In The Southwestern Great Basin, Weiquan Dong

UNLV Retrospective Theses & Dissertations

Thick vadose zones in arid regions recorded past climate changes up to 100 ka, so they are unique archives for continental paleoclimate change and groundwater recharge during the late Quaternary. Despite extensive research on flow and transport in arid regions, the transport properties and general response of arid vadose zones to climate regimes are still not well understood. Some of these issues are addressed with four distinct studies in this dissertation. The first study investigates effects of soil texture, vegetation coverage, and macropores on soil moisture variation at Nevada Test Site (NTS). The simulations show that bare soils have higher …

Characterization Of Dissolved Organic Carbon In Lake Mead, Yixin Wei

UNLV Retrospective Theses & Dissertations

Lake Mead is located in the Mojave Desert and provides water for several states in the southwestern U.S. Although most of the water in Lake Mead originates from the Colorado River, there are several minor sources of water, such as the Virgin River, the Muddy River, and the Las Vegas Wash, that could impact water quality. The principal objective of this study was to obtain new and fundamental information about dissolved organic carbon (DOC) in the Lake. This study focuses on the development of concentration methods for aquatic humic substances (HS, major components of DOC), and the characterization of HS …

Trace Element Geochemistry Of Groundwater Flow Systems In Southern Nevada And Eastern California, Xiaoping Zhou

UNLV Retrospective Theses & Dissertations

The Nevada Test Site (NTS) was used for underground nuclear tests before the 1960's. Yucca Mountain in southern Nevada has been proposed as the site for the first high-level radioactive waste repository in the U.S. Because groundwater is a likely medium for transporting radio-nuclides to the accessible environment, determining the nature and path of groundwater movement through the aquifers at the NTS and Yucca Mountain is a critical task for assessing the risks and the future performance of the repository. In this study, systematic investigations of major ion and trace [mainly rare earth element (REE)] element geochemistry were conducted on …

Establishing Uranium Migration Parameters For The Indian Springs Range, Clinton E Abell

UNLV Retrospective Theses & Dissertations

For the past 24 years, depleted uranium (DU) kinetic energy penetrators used by the US Air Force have been tested and evaluated to develop targeting system algorithms at a site in the Mojave Desert. This two-fold study focused on reducing uncertainties in the environmental parameters used to model DU migration in arid soils through extensive soil characterization; and evaluated potential horizontal migration of DU through close examination of erosion tracts traversing the target area. Model error reduction was achieved by developing site-specific parameters for DU migration on various impacted soil horizons. Parameters determined in this work included distribution coefficients, soil …

Geochemical Interpretation On Groundwater Flow In The Southern Great Basin, Jeremy Edward Koonce

UNLV Retrospective Theses & Dissertations

The study of geochemical processes and integrated water flow can help identify groundwater sources and improve predictions of contaminant fate and transport in groundwater systems. Understanding groundwater flow paths in and around the Nevada Test Site (NTS) is important due to the possible migration of contaminated groundwater to the neighboring communities; Harry Reid Center collected a total of 118 samples from the NTS and surrounding area (e.g., Oasis Valley, Ash Meadows, Death Valley, the Spring Mountains, and Pahranagat Valley) and analyzed for trace elements and major solutes. Cluster analysis and Principal Component Analysis (PCA), along with basic Geographical Information Systems, …

Comparative Analyses Of Residual Stresses In Target Sub-System Materials, Anand Venkatesh

UNLV Retrospective Theses & Dissertations

Recent approaches to residual stress measurements in transmutation target structural materials using destructive and nondestructive techniques have been investigated in this research project. A major emphasis has been placed on the use of the Neutron Diffraction (ND) technique to determine the residual stresses in austenitic and martensitic stainless steels subjected to plastic deformation and welding operations. The resultant data have been compared to those obtained by other techniques including positron annihilation spectroscopy, x-ray diffraction and ring-core methods. Cold-worked (CW), three-point-bent (TPB) and welded specimens of similar and dissimilar materials were tested. ND measurements on CW specimens showed enhanced residual stresses …

2004-2005 Southern Illinois University Bulletin Carbondale Campus (Undergraduate Catalog), Southern Illinois University Carbondale

SIU Bulletins and Course Catalogs Archives

No abstract provided.

Multiplicative Renormalization And Generating Functions Ii, Nobuhiro Asai, Izumi Kubo, Hui Hsiung Kuo

Faculty Publications

Let μ be a probability measure on the real line with finite moments of all orders. Suppose the linear span of polynomials is dense in L 2(μ). Then there exists a sequence {Pn} n=0∞ orthogonal polynomials with respect to μ such that Pn is a polynomial of degree n with leading coefficient 1 and the equality (x -αn)Pn(x) = Pn+1(x) + wnPn-1(x) holds, where αn and w n are Szegö-Jacobi parameters. In this paper we use the concepts of pre-generating function, multiplicative renormalization, and generating function to derive {Pn,αn,wn} from a given μ Two types of pre-generating functions are studied. …

Viewbook- 2004, Admissions Staff

Student Handbooks

Student guide

Understanding Manufacturing Energy Use Through Statistical Analysis, J. Kelly Kissock, John Seryak

Mechanical and Aerospace Engineering Faculty Publications

Energy in manufacturing facilities is used for direct production of goods, space conditioning, and general facility support such as lighting. This paper presents a methodology for statistically analyzing plant energy use in terms of these major end uses. The methodology uses as few as 60 data points that are relatively easy for most plants to obtain. Multivariable change-point models of electricity and natural gas use as functions of outdoor air temperature and production data are then developed. The statistical models can be used to predict energy use for energy budgeting, measure savings, determine cost structures, and diagnostic purposes. Moreover, in …

How Many Times Do I Have To Tell You?! Epa's Ongoing Struggle With Data From Third-Party Pesticide Toxicity Studies Using Human Subjects, Heidi Gorovitz Robertson

Law Faculty Articles and Essays

This article addresses EPA's current and historic policy struggle regarding the position the Agency should take with respect to pesticide toxicity studies done by third parties in their attempts to register pesticides. Chemical companies often conduct these studies, or seek third-parties to do so, and submit the results to EPA in support of applications for pesticide registration. Although EPA had a high level joint Science Advisory Board/FIFRA Science Advisory Panel make recommendations to it on this subject in 1999, last year EPA asked the National Academy of Sciences to conduct additional, almost certainly duplicative review. Specifically, EPA has asked the …

Csl Facts 2003/2004: Facts On Community Service Learning In The California State University, California State University

Higher Education

This report includes: The California State University; Commitment to Service; California's Call to Service; Facts and Figures; Service Profiles Across the CSU; and Contact Information

2004, Southern Illinois University Carbondale

Graduate Highlights

No abstract provided.

Florida Institute Of Technology Catalog 2005-2006, Florida Institute Of Technology

Florida Institute of Technology Melbourne and Jensen Beach Catalogs, 1967-2015

Academic catalog by Florida Institute of Technology for the 2005-2006 academic year.

Bulletin: General Catalog Issue 2004-2005, Portland State University

Bulletin & Curriculum Change Documents

No abstract provided.

About The Authors

The Park Place Economist

No abstract provided.

Mute Swans And Their Chesapeake Bay Habitats:Proceedings Of A Symposium, Matthew C. Perry

United States Geological Survey: Publications

The symposium “Mute Swans and their Chesapeake Bay Habitats,” held on June 7, 2001, provided a forum for biologists and managers to share research findings and management ideas concerning the exotic and invasive mute swan (Cygnus olor). This species has been increasing in population size and is considered by many to be a problem in regard to natural food resources in the Bay that are used by native waterfowl during the winter months. Other persons, however, feel that resource managers are attempting to create a problem to justify more killing of waterfowl by hunters. Some persons also believe …

Modeling Impacts On Populations: Fathead Minnow (Pimephales Promelas) Exposure To The Endocrine Disruptor 17Β-Trenbolone As A Case Study, David H. Miller, Gerald T. Ankley

United States Environmental Protection Agency: Publications

Evaluation of population-level impacts is critical to credible ecological risk assessments. In this study, a predictive model was developed to translate changes in fecundity of the fathead minnow (Pimephales promelas) in a short-term laboratory toxicity test to alterations in population growth rate. The model uniquely combines a Leslie population projection matrix and the logistic equation. Application of the model requires only a life table for the organism of interest, a measure of carrying capacity for the given population, and an estimation of the effect of a stressor on vital rates. The model was applied to investigate population dynamics …

Bufflehead Breeding Activity In South-Central North Dakota, Gregory A. Knutsen, Janet C. King

United States Fish and Wildlife Service: Publications

The bufflehead (Bucephala albeola) is a small, cavity-nesting diving duck that breeds primarily in the aspen parkland and boreal forest regions of Alaska and Canada (Erskine 1972, Bellrose 1976, Gauthier 1993). According to Gauthier (1993), buffleheads prefer habitat consisting of small, permanent wetlands with a scarcity of emergent vegetation and adjacent aspen or poplar (Populus spp.) stands.

University Of Nebraska—Lincoln: Fact Book 2003—2004

University of Nebraska-Lincoln Administration: Reports, Papers, Publications, and Presentations

Role and Mission Statement

The Role of the University of Nebraska-Lincoln

The University of Nebraska-Lincoln, chartered by the Legislature in 1869, is that part of the University of Nebraska system which serves as both the land-grant and the comprehensive public University for the State of Nebraska. Those responsible for its origins recognized the value of combining the breadth of a comprehensive University with the professional and outreach orientation of the land grant University, thus establishing a campus which has evolved to become the flagship campus of the University of Nebraska. UNL works cooperatively with the other three campuses and Central …

Hazardous Waste Site Sampling Basics, Pamela S. Innis

United States Bureau of Land Management: Staff Publications

The Bureau of Land Management (BLM) is responsible for addressing releases of hazardous substances on public lands under their jurisdiction. This technical note provides technical guidance to those responsible for overseeing or conducting environmental sampling activities; provides information and references to assist field personnel in implementing technically consistent and responsive analytical sampling programs at hazardous waste sites; introduces the concepts and issues related to analytical sampling at hazardous waste sites; and provides a quick reference to websites and documents that can assist field personnel in implementing a site characterization plan.

Law School Catalog 2004, Wiener-Rogers Law Library, University Of Nevada, Las Vegas -- William S. Boyd School Of Law

Law School Catalogs

No abstract provided.

Sozialpolitik Anders Denken. Das Verursacherprinzip – Von Der Umweltpolitischen Zur Sozialpolitischen Anwendung, Isidor Wallimann, Esteban Piñeiro

Books

The “polluter pays” principle in environmental law assumes that the actor would reduce or avoid adverse effects of his actions if he had to bear the consequences of those actions (internalization of effects). Such internalization can generally be done in two ways: either by avoiding or eliminating the harmful effects or by wearing the financial consequences of the injury. It is therefore on the one hand to have an incentive effect, on the other to a compensatory effect.

Pineiro and Wallimann apply these societal cost principles from the environmental world to the social realm, where social problems can be seen …

Revisioning The Oversight Of Research Involving Humans In Canada, Jocelyn Downie, Fiona Mcdonald

Articles, Book Chapters, & Popular Press

When individuals are asked to participate in research they should be able to assume that the research "is well designed and well executed, that the investigator is competent to undertake the study, that the study will be run efficiently, safely, and ethically and that the deviations from good practice will be identified and corrected." The central question that we focus on in this paper is whether the governance mechanisms that are currently in place to regulate the conduct of research involving humans are adequate to enable those who are approached to participate in research to make these assumptions. This review …