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2000

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Articles 2611 - 2640 of 2647

Full-Text Articles in Physical Sciences and Mathematics

Spatial And Temporal Patterns Of Fluvial Suspended Sediment Yield From Eastern North America, Catherine Treena Conrad Jan 2000

Spatial And Temporal Patterns Of Fluvial Suspended Sediment Yield From Eastern North America, Catherine Treena Conrad

Theses and Dissertations (Comprehensive)

A knowledge of spatial and temporal patterns of sediment yields and an understanding of the factors that determine those patterns have theoretical, environmental and socio-economic significance. To assess the change in sediment yields (in both space and time) a data base of 193 river gauging sites spanning the eastern provinces of Canada and eastern United States was compiled. The original source of the data was the United States Geological Survey data base (obtained from a Hydrosphere Data Inc. cd-rom) and Environment Canada (HYDAT) data base, which included stream discharge, sediment loads and basin areas, with record lengths of one year …


Characterization Of Hyporheic Zone Processes Of A Northern Prairie Stream, David B. Rush Jan 2000

Characterization Of Hyporheic Zone Processes Of A Northern Prairie Stream, David B. Rush

Theses and Dissertations

A hyporheic zone occurs beneath and adjacent to streams where surface water and groundwater mix. This zone is known to be a reservoir for solutes and a habitat for interstitial organisms. Hyporheic zone boundaries in the Tongue River, North Dakota, were investigated through examination of the physicochemical and biological gradients present in the stream channel and bank sediments. The effects of cattle grazing at the streamside interface of the riparian zone were also examined at two locations to determine land use impacts on the hyporheic zone.

Electrical conductivity (EC) and ammonium gradients were observed beneath the stream channel via nests …


Health Informatics Research & Evaluation Design Students Overwhelmingly Prefer Hypertutorial Web-Based Instruction In Randomized Comparison, Craig W. Johnson Jan 2000

Health Informatics Research & Evaluation Design Students Overwhelmingly Prefer Hypertutorial Web-Based Instruction In Randomized Comparison, Craig W. Johnson

Faculty, Staff and Student Publications

No abstract provided.


The Usm And U.S. Navy Collaborative Effort To Establish A National Center Of Excellence In Hydrographic Science, Andre Godin, Denis A. Wiesenburg, Donald G. Redalje, Kenneth Cooper, Captain Timothy J. Mcgee, Charles West Jan 2000

The Usm And U.S. Navy Collaborative Effort To Establish A National Center Of Excellence In Hydrographic Science, Andre Godin, Denis A. Wiesenburg, Donald G. Redalje, Kenneth Cooper, Captain Timothy J. Mcgee, Charles West

Hydrographic Science Research Center

A new partnership in Mississippi teams the operational arm of the U.S. Navy with the state academic leader in marine science, The University of Southern Mississippi (USM), to establish a nationally unique Center For Hydrographic Excellence. The Navy brings eight of the world’s most modern survey ships, a solid core of experienced field hydrographers, and the nation’s most extensive holdings of bathymetric and hydrographic data to the partnership.  USM joins the union with a new graduate degree program in Hydrographic Science established by the Department of Marine Science at the Stennis Space Center.  This new graduate degree program, formally approved …


Response Of Captive Coyotes To Renardine Coyote Repellent, D. E. Zemlicka, J. R. Mason Jan 2000

Response Of Captive Coyotes To Renardine Coyote Repellent, D. E. Zemlicka, J. R. Mason

United States Department of Agriculture Wildlife Services: Staff Publications

Renardine is a bone tar product available for use as a coyote (Canis latrans) repellent in Canada. The substance is applied to pasture borders to prevent coyotes from entering and attacking sheep. Because data regarding the effectiveness of Renardine are lacking, we designed two experiments. In the first, six pairs of coyotes were first presented with 400 g of ground meat in two pans (200 g/pan) with false screen bottoms. Beneath the screens were absorbent tubes wetted with 10 ml of distilled water. Subsequently, during a treatment period, the absorbent tube was wetted with 10 ml of Renardine. …


Hazing And Movements Of Canada Geese Near Elmendorf Air Force Base In Anchorage, Alaska, Darryl L. York, John L. Cummings, Richard M. Engeman, Kate L. Wedemeyer Jan 2000

Hazing And Movements Of Canada Geese Near Elmendorf Air Force Base In Anchorage, Alaska, Darryl L. York, John L. Cummings, Richard M. Engeman, Kate L. Wedemeyer

United States Department of Agriculture Wildlife Services: Staff Publications

Bird strikes to aircraft are a serious economic and safety problem in the United States, annually causing millions of dollars in damage to civilian and military aircraft and the occasional loss of human life. We observed movements of 1236 neckbanded lesser Canada geese (Branta canadensis parvipes) to determine efficacy of hazing as a means to reduce goose presence at Elmendorf Air Force Base (EAFB), Anchorage, Alaska from August to October 1997. Emphasis was on movements of geese onto EAFB with additional data collected at the other two major airports in the area, Anchorage International Airport (AIA) and Merrill …


Evaluation Of Flight ControlTm And Mesurol® As Repellents To Reduce Horned Lark (Eremophila Alpestris) Damage To Lettuce Seedlings, Darryl L. York, John L. Cummings, Richard M. Engeman, James E. Davis Jr. Jan 2000

Evaluation Of Flight ControlTm And Mesurol® As Repellents To Reduce Horned Lark (Eremophila Alpestris) Damage To Lettuce Seedlings, Darryl L. York, John L. Cummings, Richard M. Engeman, James E. Davis Jr.

United States Department of Agriculture Wildlife Services: Staff Publications

We conducted enclosure trials near Huron, CA in the San Joaquin Valley from 12 to 23 January 1999 to determine the efficacy of Flight Control™ (50% anthraquinone) and Mesurol® (75% methiocarb) in preventing horned lark damage to lettuce seedlings. Flight Control™ (FC) and Mesurol® were evaluated as foliar sprays at application rates of 2.79 and 2.27 kg ha-1, respectively. Homed lark damage to lettuce seedlings treated with antraquinone was greater (p = 0.015) than for rnethiocarb®, 60 versus 20%, respectively, and seedlings in control plots were 100% destroyed. While this level of damage is probably unacceptable to lettuce …


Home Ranges And Habitat Selection Of White-Tailed Deer In A Suburban Nature Area In Eastern Nebraska, Scott Hygnstrom, Kurt C. Vercauteren Jan 2000

Home Ranges And Habitat Selection Of White-Tailed Deer In A Suburban Nature Area In Eastern Nebraska, Scott Hygnstrom, Kurt C. Vercauteren

United States Department of Agriculture Wildlife Services: Staff Publications

We evaluated the movements of 59 radio-collared female white-tailed deer (Odocoileus virginianus) at the Gifford Point Wildlife Management Area (GP) and Fontenelle Forest Nature Area (FF) in eastern Nebraska from 1994 to 1997. Annual home ranges averaged 276 ha (CI = 166 ha). Forty-four of the deer maintained relatively small home ranges (0=129 ha) and resided in the GP lowlands (n=14), FF lowlands (n=ll), and FF uplands-Bellevue residential area (BR) (n= 19). Deer in the latter area were frequently observed in backyards, at deer feeders, and on city streets. Seven of the deer were transients, maintaining seasonal home …


Integrated Pest Management Of Black Bear Reforestation Damage, Gary W. Witmer, Dale L. Nolte, William Stewart Jan 2000

Integrated Pest Management Of Black Bear Reforestation Damage, Gary W. Witmer, Dale L. Nolte, William Stewart

United States Department of Agriculture Wildlife Services: Staff Publications

Black bear damage to commercial, coniferous trees on intensively managed public and private forest lands of the Pacific Northwest continues to be a problem for forest managers. Historically, methods such as relocation or spring hunts have been used in an effort to reduce bear density and damage. More recently, supplemental feeding has been used in an attempt to provide for the nutritional needs of bears during the damage period. Alternative silvicultural practices and repellents are being investigated for their ability to reduce the likelihood of bear damage. These and other methods need to be examined for their effectiveness, especially in …


Cormorant Research And Impacts To Southern Aquaculture, Scott Werner Jan 2000

Cormorant Research And Impacts To Southern Aquaculture, Scott Werner

United States Department of Agriculture Wildlife Services: Staff Publications

Several North American waterbird species were negatively affected by compromised environmental quality by the mid-twentieth century. Double-crested cormorant populations responded to increased environmental regulations in the United States in the early 1970s. The abundance of cormorants wintering in southern states (especially Alabama, Arkansas, Louisiana, and Mississippi) increased concurrently with a marked increase in catfish, crawfish, and bait fish production in these states since 1980, thus increasing regional concern regarding production losses to these industries. Cormorants wintering in Mississippi have increased nearly 225% since 1990. Food habit studies, bioenergetic predictions, and captive-bird foraging experiments indicate that individual cormorants consume approximately 0.5 …


Evaluation Of Hot Sauce® As A Repellent For Forest Mammals, Kimberly K. Wagner, Dale L. Nolte Jan 2000

Evaluation Of Hot Sauce® As A Repellent For Forest Mammals, Kimberly K. Wagner, Dale L. Nolte

United States Department of Agriculture Wildlife Services: Staff Publications

Foraging by forest mammals can be significantly detrimental to reforestation efforts. Repellents may offer a nonlethal solution for some situations. Hot Sauce® animal repellent uses capsaicin, a trigeminal irritant that should be aversive to most mammals. We conducted a series of tests evaluating the impact of Hot Sauce on foraging by 5 species of forest mammals. In our first study, we examined its potential to reduce browsing by black-tailed deer (Odocoileus hemionus). Damage to Western redcedar seedlings (Thuja plicata) was initially reduced with application of a 6.2% Hot Sauce solution, but efficacy began to decline after …


Deer Population Management Through Hunting In A Suburban Nature Area In Eastern Nebraska, Kurt C. Vercauteren, Scott E. Hygnstrom Jan 2000

Deer Population Management Through Hunting In A Suburban Nature Area In Eastern Nebraska, Kurt C. Vercauteren, Scott E. Hygnstrom

United States Department of Agriculture Wildlife Services: Staff Publications

The Fontenelle Forest Nature Area (FF) maintained a hands-off management policy for 30 years until it was recognized that white-tailed deer (Odocoileus virginianus) populations had grown to such levels that they were severely degrading native plant communities. In 1995, members of a community task force decided to sponsor annual nine-day hunting seasons on FF after learning that densities exceeded 28 deer/km2. Archers harvested 85 antlerless deer in the FF upland areas adjacent to residential Bellevue, Nebraska during 1996 to 1998. Muzzleloader hunters removed 53 antlerless deer from the FF lowland areas. Archery and muzzleloader hunters harvested …


Urban-Suburban Prairie Dog Management: Opportunities And Challenges, Gary W. Witmer, Kurt C. Vercauteren, Karen Manci, Donna Dees Jan 2000

Urban-Suburban Prairie Dog Management: Opportunities And Challenges, Gary W. Witmer, Kurt C. Vercauteren, Karen Manci, Donna Dees

United States Department of Agriculture Wildlife Services: Staff Publications

The historic range of the black-tailed prairie dog has undergone dramatic declines in the last century, prompting concern about the species' long-term viability. While considered a pest by many, others believe that the species is a "keystone" element of prairie ecosystems. Urban-suburban land managers are challenged with preserving colonies of prairie dogs on public lands while dealing with many conflicting interests, social costs, and risks. We review the management plans that municipalities have designed to reduce conflicts by using public input, zoned management, and a variety of management techniques. Areas of difficulty and research needs are also discussed.


Controlled Comparison Of Emergency Department Charting Software With A Case Simulation Comparator Model, Kirt Walker, Sridhar Rajappan, Todd R. Johnson Jan 2000

Controlled Comparison Of Emergency Department Charting Software With A Case Simulation Comparator Model, Kirt Walker, Sridhar Rajappan, Todd R. Johnson

Faculty, Staff and Student Publications

No abstract provided.


Comparison Of Abbreviated Injury Scale (Ais) And International Classification Of Diseases In Severe Trama Patients, Noriaki Aoki, Molly C. Shek, Todd R. Johnson, Martin A. Shreiber, John B. Holcomb, Matthew J. Wall, Richard W. Cone, Robert Beck Jan 2000

Comparison Of Abbreviated Injury Scale (Ais) And International Classification Of Diseases In Severe Trama Patients, Noriaki Aoki, Molly C. Shek, Todd R. Johnson, Martin A. Shreiber, John B. Holcomb, Matthew J. Wall, Richard W. Cone, Robert Beck

Faculty, Staff and Student Publications

No abstract provided.


Small-Scale Variability Of Groundwater-Lake Interaction At Shingobee Lake, Minnesota, Hans F. Kishel Jan 2000

Small-Scale Variability Of Groundwater-Lake Interaction At Shingobee Lake, Minnesota, Hans F. Kishel

Theses and Dissertations

Groundwater discharge is an important contributor to the water budget of a lake. The variability of hydraulic parameters of lake and groundwater systems causes difficulties in estimating the contribution of groundwater to a lake water budget. This study attempts to show that amount of variability for a small portion of the lake and shore (8 x 15 meter section, starting approximately five meters from shore and extending nine meters into the lake).

Piezometers were installed at a depth of one half and one meter in nests at 70 locations in the rectangular study site. Water levels were collected from the …


Air-Ground Temperature Exchange, William L. Schmidt Jan 2000

Air-Ground Temperature Exchange, William L. Schmidt

Theses and Dissertations

Most borehole paleoclimate studies have been based on the assumption that the exchange of temperature between the air and ground surface remains constant. However, secular changes in boundary-layer factors can generate anomalous ground temperatures. This dissertation is an investigation of factors that cause separation of air and ground temperatures on a seasonal to inter-annual time scale, including snow cover duration, latent energy of ground freezing, daily sunlight, precipitation, and vegetation.

Continual records of surface air and near-surface ground temperatures from five sites in North Dakota show similar trends in seasonal air-ground temperature separation. Statistical regressions of mean annual ground temperatures …


A Java Graphical User Interface For Large-Scale Scientific Computations In Distributed Systems, X Shen, George K. Thiruvathukal, Wei-Keng Liao, Alok Choudhary, A Singh Jan 2000

A Java Graphical User Interface For Large-Scale Scientific Computations In Distributed Systems, X Shen, George K. Thiruvathukal, Wei-Keng Liao, Alok Choudhary, A Singh

Computer Science: Faculty Publications and Other Works

Large-scale scientific applications present great challenges to computational scientists in terms of obtaining high performance and in managing large datasets. These applications (most of which are simulations) may employ multiple techniques and resources in a heterogeneously distributed environment. Effective working in such an environment is crucial for modern large-scale simulations. In this paper, we present an integrated Java graphical user interface (IJ-GUI) that provides a control platform for managing complex programs and their large datasets easily. As far as performance is concerned, we present and evaluate our initial implementation of two optimization schemes: data replication and data prediction. Data replication …


Selection Of Curricular Topics Using Extensions Of Quality Function Deployment, Paul Kauffmann, Abel Fernandez, Charles Keating, Derya Jacobs, Resit Unal Jan 2000

Selection Of Curricular Topics Using Extensions Of Quality Function Deployment, Paul Kauffmann, Abel Fernandez, Charles Keating, Derya Jacobs, Resit Unal

Engineering Management & Systems Engineering Faculty Publications

Decision science can be an effective tool for enhancing organizational participation during strategic and complex decision making. This involvement develops a group consensus for relating organizational goals and the methods to achieve them. This paper describes an application of Quality Function Deployment (QFD) to define curricular topics that meet program objectives. Based on the ability of QFD to establish relationships, the model identifies the most important topics and quantifies their impact on meeting program goals. The model was developed to support restructuring of a Masters of Engineering Management degree program. The model supported decisions in selecting and prioritizing the required …


Bulletin 4446 - Ord Land And Water Management Plan 2000, Agriculture Western Australia, Community Of Kununurra Jan 2000

Bulletin 4446 - Ord Land And Water Management Plan 2000, Agriculture Western Australia, Community Of Kununurra

Bulletins 4000 -

The wise use of the land and water of the Ord has become an imperative driven by increasing awareness of the impacts of current uses on ground water and the on the quality of the Ord River itself.

We have been lucky as a community that these resources are still in reasonable order and that we have the time to address the resource management challenges associated with our use of them. There is a wide range of land and water management issues to be addressed and all those involved have responsibilities to address some of those issues.


Dalyup Catchment 2000, Esperance Catchment Support Team Jan 2000

Dalyup Catchment 2000, Esperance Catchment Support Team

Natural resources published reports

This 'State of the Dalyup Catchment' document is a snapshot of the condition of the Catchment in the year 2000. It records the current level of knowledge of the natural resources in the Catchment and discusses some of the management issues and options. This document is a benchmark and through ongoing monitoring, trends in the condition of the Catchment can be identified.

Its primary purpose is as a tool for resource planning such as a surface water management plan, river action plan or revegetation plan. It can also be used in the preparation of funding applications.


Bulletin No 4315 - Western Australia's Agricultural, Food & Fisheries Industries 1999 - 2000, Besko Trhuij, Francis D'Emden Jan 2000

Bulletin No 4315 - Western Australia's Agricultural, Food & Fisheries Industries 1999 - 2000, Besko Trhuij, Francis D'Emden

Bulletins 4000 -

Fifth Edition (revised and updated) December 2000.

Western Australia’s agriculture and fisheries industries have an international reputation for providing premium quality food and fibre produce to customers around the world.

The State of Western Australia is setting the international quality standard in the production of a vast array of food, fibre and fisheries products.

Agriculture Western Australia has developed the Safe Quality Food System (SQF2000), which not only meets stringent world food standards, but is being adopted in many countries as a unique trademark of quality.

Free of many pests, diseases and pollution found elsewhere, the State offers produce sourced …


Variability In Winter Mass Balance Of Northern Hemisphere Glaciers And Relations With Atmospheric Circulation, Gregory J. Mccabe, Andrew G. Fountain, Mark Dyurgerov Jan 2000

Variability In Winter Mass Balance Of Northern Hemisphere Glaciers And Relations With Atmospheric Circulation, Gregory J. Mccabe, Andrew G. Fountain, Mark Dyurgerov

Geography Faculty Publications and Presentations

An analysis of variability in the winter mass balance (WMB) of 22 glaciers in the Northern Hemisphere indicates two primary modes of variability that explain 46% of the variability among all glaciers. The first mode of variability characterizes WMB variability in Northern and Central Europe and the second mode primarily represents WMB variability in northwestern North America, but also is related to variability in WMB of one glacier in Europe and one in Central Asia. These two modes of WMB variability are explained by variations in mesoscale atmospheric circulation which are driving forces of variations in surface temperature and precipitation. …


Search For Resonances Decaying To E+-Jet In E+P Interactions At Hera, J. Breitweg, S. Chekanov, M. Derrick, D. Krakauer, S. Magill, B. Musgrave, A. Pellegrino, J. Repond, R. Stanek, R. Yoshida, Margarita C. K. Mattingly, G. Abbiendi, F. Anselmo, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, N. Coppola, M. Corradi, S. De Pasquale, P. Giusti, G. Iacobucci, G. Laurenti Jan 2000

Search For Resonances Decaying To E+-Jet In E+P Interactions At Hera, J. Breitweg, S. Chekanov, M. Derrick, D. Krakauer, S. Magill, B. Musgrave, A. Pellegrino, J. Repond, R. Stanek, R. Yoshida, Margarita C. K. Mattingly, G. Abbiendi, F. Anselmo, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, N. Coppola, M. Corradi, S. De Pasquale, P. Giusti, G. Iacobucci, G. Laurenti

Faculty Publications

The e+-jet invariant mass spectrum produced in the reaction e+p → e+ X has been studied at a center-of-mass energy of 300 GeV. The data were collected using the ZEUS detector operating at the HERA collider, and correspond to an integrated luminosity of 47.7 pb-1. The observed mass spectrum is in good agreement with Standard Model expectations up to an e+-jet mass of 210 GeV. Above this mass, some excess is seen. The angular distribution of these events is typical of high-Q2 neutral current events and does not give convincing evidence for the presence of a narrow scalar or vector …


Measurement Of Diffractive Photoproduction Of Vector Mesons At Large Momentum Transfer At Hera, J. Breitweg, S. Chekanov, M. Derrick, D. Krakauer, S. Magill, B. Musgrave, A. Pellegrino, J. Repond, R. Stanek, R. Yoshida, Margarita C. K. Mattingly, G. Abbiendi, F. Anselmo, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, N. Coppola, M. Corradi, S. De Pasquale, P. Giusti, G. Iacobucci, G. Laurenti Jan 2000

Measurement Of Diffractive Photoproduction Of Vector Mesons At Large Momentum Transfer At Hera, J. Breitweg, S. Chekanov, M. Derrick, D. Krakauer, S. Magill, B. Musgrave, A. Pellegrino, J. Repond, R. Stanek, R. Yoshida, Margarita C. K. Mattingly, G. Abbiendi, F. Anselmo, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, N. Coppola, M. Corradi, S. De Pasquale, P. Giusti, G. Iacobucci, G. Laurenti

Faculty Publications

No abstract provided.


Search For Contact Interactions In Deep Inelastic E+P → E+X Scattering At Hera, J. Breitweg, S. Chekanov, M. Derrick, D. Krakauer, S. Magill, B. Musgrave, A. Pellegrino, J. Repond, R. Stanek, R. Yoshida, Margarita C. K. Mattingly, G. Abbiendi, F. Anselmo, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, N. Coppola, M. Corradi, S. De Pasquale, P. Giusti, G. Iacobucci, G. Laurenti Jan 2000

Search For Contact Interactions In Deep Inelastic E+P → E+X Scattering At Hera, J. Breitweg, S. Chekanov, M. Derrick, D. Krakauer, S. Magill, B. Musgrave, A. Pellegrino, J. Repond, R. Stanek, R. Yoshida, Margarita C. K. Mattingly, G. Abbiendi, F. Anselmo, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, N. Coppola, M. Corradi, S. De Pasquale, P. Giusti, G. Iacobucci, G. Laurenti

Faculty Publications

In a search for signatures of physics processes beyond the Standard Model, various eeqq vector contact-interaction hypotheses have been tested using the high-Q2 deep inelastic neutral-current e+p scattering data collected with the ZEUS detector at HERA. The data correspond to an integrated luminosity of 47.7pb-1 of e+p interactions at 300 GeV center-of-mass energy. No significant evidence of a contact-interaction signal has been found. Limits at the 95% confidence level are set on the contact-interaction amplitudes. The effective mass scales Λ corresponding to these limits range from 1.7 TeV to 5 TeV for the contact-interaction scenarios considered.


Measurement Of D*± Production And The Charm Contribution To F2 In Deep Inelastic Scattering At Hera, J. Breitweg, S. Chekanov, M. Derrick, D. Krakauer, S. Magill, B. Musgrave, A. Pellegrino, J. Repond, R. Stanek, R. Yoshida, Margarita C. K. Mattingly, G. Abbiendi, F. Anselmo, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, N. Coppola, M. Corradi, S. De Pasquale, P. Giusti, G. Iacobucci, G. Laurenti Jan 2000

Measurement Of D*± Production And The Charm Contribution To F2 In Deep Inelastic Scattering At Hera, J. Breitweg, S. Chekanov, M. Derrick, D. Krakauer, S. Magill, B. Musgrave, A. Pellegrino, J. Repond, R. Stanek, R. Yoshida, Margarita C. K. Mattingly, G. Abbiendi, F. Anselmo, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, N. Coppola, M. Corradi, S. De Pasquale, P. Giusti, G. Iacobucci, G. Laurenti

Faculty Publications

The production of D*± (2010) mesons in deep inelastic scattering has been measured in the ZEUS detector at HERA using an integrated luminosity of 37 pb-1. The decay channels D*+ → D0π+ (+c.c.), with D0 → K-π+ or D0 → K-π-π+π+, have been used to identify the D mesons. The e+p cross section for inclusive D*± production with 1 < Q2 < 600 GeV2 and 0.02 < y < 0.7 is 8.31±0.31(stat.)+0.30-0.50 (syst.) nb in the kinematic region 1.5 < pT(D*±) < 15 GeV and \η(D*±)\ < 1.5. Differential cross sections are consistent with a next-to-leading-order perturbative-QCD calculation when using charm-fragmentation models which take into account the interaction of the charm quark with the proton remnant. The observed cross section is extrapolated to the full kinematic region in pT(D*±) and η(D*±) in order to determine the charm contribution, Fcc̄2 (x, Q2), to the proton structure function. The ratio Fcc̄2/F2 rises from ≃10% at Q2 ≃ 1.8GeV2 to ≃30% at Q2 ≃130GeV2 for x values in the range 10-4 to 10-3.


Angular And Current-Target Correlations In Deep Inelastic Scattering At Hera, J. Breitweg, S. Chekanov, M. Derrick, D. Krakauer, S. Magill, B. Musgrave, A. Pellegrino, J. Repond, R. Stanek, R. Yoshida, Margarita C. K. Mattingly, G. Abbiendi, F. Anselmo, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, N. Coppola, M. Corradi, S. De Pasquale, P. Giusti, G. Iacobucci, G. Laurenti Jan 2000

Angular And Current-Target Correlations In Deep Inelastic Scattering At Hera, J. Breitweg, S. Chekanov, M. Derrick, D. Krakauer, S. Magill, B. Musgrave, A. Pellegrino, J. Repond, R. Stanek, R. Yoshida, Margarita C. K. Mattingly, G. Abbiendi, F. Anselmo, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, N. Coppola, M. Corradi, S. De Pasquale, P. Giusti, G. Iacobucci, G. Laurenti

Faculty Publications

Correlations between charged particles in deep inelastic e+ p scattering have been studied in the Breit frame with the ZEUS detector at HERA using an integrated luminosity of 6.4pb-1. Short-range correlations are analysed in terms of the angular separation between current-region particles within a cone centred around the virtual photon axis. Long-range correlations between the current and target regions have also been measured. The data support predictions for the scaling behaviour of the angular correlations at high Q2 and for anti-correlations between the current and target regions over a large range in Q2 and in the Bjorken scaling variable x. …


Measurement Of High-Q2 Charged-Current E+P Deep Inelastic Scattering Cross Sections At Hera, J. Breitweg, S. Chekanov, M. Derrick, D. Krakauer, S. Magill, B. Musgrave, A. Pellegrino, J. Repond, R. Stanek, R. Yoshida, Margarita C. K. Mattingly, G. Abbiendi, F. Anselmo, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, N. Coppola, M. Corradi, S. De Pasquale, P. Giusti, G. Iacobucci, G. Laurenti Jan 2000

Measurement Of High-Q2 Charged-Current E+P Deep Inelastic Scattering Cross Sections At Hera, J. Breitweg, S. Chekanov, M. Derrick, D. Krakauer, S. Magill, B. Musgrave, A. Pellegrino, J. Repond, R. Stanek, R. Yoshida, Margarita C. K. Mattingly, G. Abbiendi, F. Anselmo, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, N. Coppola, M. Corradi, S. De Pasquale, P. Giusti, G. Iacobucci, G. Laurenti

Faculty Publications

The e+p charged-current deep inelastic scattering cross sections, dσ/dQ2 for Q2 between 200 and 60000 GeV2, and dσ/dx and dσ/dy for Q2 > 200 GeV2, have been measured with the ZEUS detector at HERA. A data sample of 47.7 pb-1, collected at a center-of-mass energy of 300 GeV, has been used. The double-differential cross-section dσ/dQ2 falls by a factor of about 50000 as Q2 increases from 280 to 30000 GeV2. The double differential cross section d2σ/dxdQ2 has also been measured. A comparison between the data and Standard Model (SM) predictions shows that contributions from antiquarks (ū and c̄) and quarks (d …


Managing The Acidity Of Abandoned Water Filled Coal Mining Voids In Collie (Western Australia) Using Organic Matter, Scott A. Thompson Jan 2000

Managing The Acidity Of Abandoned Water Filled Coal Mining Voids In Collie (Western Australia) Using Organic Matter, Scott A. Thompson

Theses: Doctorates and Masters

The effectiveness of using organic matter additions to increase pH in abandoned water filled coal mining voids in Collie was investigated. Previous studies have demonstrated that passing acidic drainage through organic matter increased the waters pH. Laboratory trials using intact sediment cores (collected from Ewington, Collie, Western Australia) were used to assess the effects of additions of hay, manure and mulched vegetation on pH, nutrients an sulphate levels. In a series of experiments the effect of different quantities of organic material, sulphate reducing bacterial inoculations and alkalinity generation were measured. A subsequent field experiment was conducted to examine the impact …