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Inferring Mixed-Layer Depth Variability From Argo Observations In The Western Indian Ocean, T. V. S. Udaya Bhaskar, D. Swain, M. Ravichandran

Journal of Marine Research

The seasonal and spatial variability of mixed layer depth (MLD) was examined in the Western Indian Ocean (WIO) (30E – 80E and 10S – 30N) for three consecutive years starting from June 2002 – May 2005 using Argo temperature and salinity (T/S) profiles. These were compared with MLD estimates from World Ocean Atlas 2001 (WOA01) T/S data. Temporal and spatial variability of MLD estimated from Argo T/S profiles were found to correspond well with the MLD obtained from WOA01 T/S data. However, slight deviations in the form of months of occurrence of minima and maxima MLDs were observed. MLD from …

Bio-Irrigation In Permeable Sediments: An Assessment Of Model Complexity, Filip J. R. Meysman, Oleksiy S. Galaktionov, Britta Gribsholt, Jack J. Middelburg

Journal of Marine Research

Burrowing benthic animals ventilate their burrow networks, and this enhances the transport of solutes in the sediment and exchange with the overlying water column, a process referred to as bio-irrigation. Various models have been proposed to model bio-irrigation, with different levels of sophistication related to model dimensionality and parameter numbers. Here we address the issue of model complexity for bio-irrigation in permeable sediments. To this end, we simulated flowline patterns and tracer signals using (1) a full 3D model that explicitly models the J-shaped geometry of the burrow in a suitable microenvironment surrounding the burrow, (2) a simplified 2D axisymmetric …

Differential Fates Of Emiliania Huxleyi-Derived Fatty Acids And Alkenones In Coastal Marine Sediments: Effects Of The Benthic Crustacean Palaemonetes Pugio, Haibing Ding, Ming-Yi Sun

Journal of Marine Research

In order to examine how benthic crustaceans affect the fates of phytoplankton-derived lipid biomarkers (fatty acids and alkenones) in coastal marine sediments, we incubated Emiliania huxleyi cells in microcosms (pre-sieved sediment cores with and without the grass shrimp Palaemonetes pugio ) over six weeks. Crustacean, transport of surface sediments, and distributions of algal lipids were followed during incubations. Crustacean activities enhanced degradation of algal fatty acids (2–4× faster) but had a small impact on algal alkenone degradation (<1.4×) compared to the controls. During the first few days of incubations, alkenone concentrations were enriched while algal fatty acid concentrations were depleted in suspended particles in the overlying water of cores, indicating that P. pugio selectively grazed algal material from sediments and preferentially assimilated fatty acids over alkenones through digestion. Unlike algal fatty acids, alkenones …

Sandström’S Experiments Revisited, Melissa A. Coman, Ross W. Griffiths, Graham O. Hughes

Journal of Marine Research

Sandström's (1908, 1916) pioneering experiments led to the conclusion, later referred to as Sandström's 'theorem', that differential heating and cooling cannot drive a sustained circulation when the source of heating is at or above the level of the cooling source. This principle is incorrect on theoretical grounds and is contradicted by modern laboratory results for the particular case of differential heating and cooling along a single horizontal boundary of a box. However, the 'theorem' has remained common currency. In order to explain the contradiction and explore the fundamentally important concepts involved, we re-create the original experiments of a century ago. …

Estimating Subsurface Horizontal And Vertical Velocities From Sea-Surface Temperature, J. H. Lacasce, A. Mahadevan

Journal of Marine Research

We examine a dynamical method for estimating subsurface fields (density, pressure, horizontal and vertical velocities) in the upper ocean using sea-surface temperature (SST) and a climatological estimate of the stratification. The method derives from the "surface quasi-geostrophic" (SQG) approximation. The SST is used to generate a potential vorticity (PV) field which is then inverted for the pressure. We examine first the standard SQG model, in which the PV is assumed trapped in a delta-function layer at the surface. We then modify the model by introducing a subsurface PV which is proportional to the surface density and decays exponentially with depth. …

Accounting For Unresolved Spatial Variability In Marine Ecosystems Using Time Lags, Philip J. Walhead, Adrian P. Martin, Meric A. Srokosz, Mike J. R. Fasham

Journal of Marine Research

The formulation and calibration of models is a vital method for probing and predicting the behavior of marine ecosystems. The ability to do this may suffer, however, if the calibrating data set is subject to significant spatial variability between samples that is not resolved in the model. We propose that some of this variability might be accounted for by variable time lags between sampled water masses which are otherwise assumed to follow a common pattern of ecosystem variability (dynamical trajectory). Using twin tests of fitting models to simulated data sets, we show that realistic levels of meso/sub-mesoscale variability in time …

Linking Arenicola Marina Irrigation Behavior To Oxygen Transport And Dynamics In Sandy Sediments, Karen Timmermann, Gary T. Banta, Ronnie N. Glud

Journal of Marine Research

In this study we examine how the irrigation behavior of the common lugworm Arenicola marina affects the distribution, transport and dynamics of oxygen in sediments using microelectrodes, planar optodes and diagenetic modeling. The irrigation pattern was characterized by a regular recurring periods of active irrigation lasting approximately 15 min separated by a 15 min rest period. The mean pumping rate during irrigation was 52 ml h⁻¹. Oxygen dynamics and distribution around the tail shaft was closely related to irrigation pattern but independent of pumping rate. During irrigation the oxygen concentration in the burrow was high (>80% air …

The Sdsu Collegian September 2005- May 2006 Index, Lisa Lindell

Hilton M. Briggs Library Faculty Publications

This index provides subject access to the South Dakota State University Collegian. Included are all articles written by the newspaper staff as well as wire-service news stories. Excluded are brief announcements and notices. This index covers September 2005 to May 2006. Although this is a computer-assisted index, subject headings are not automatically assigned from key words in headlines. Whenever the headline words do not accurately reflect the content of the article, appropriate subject headings are assigned. Names of the editor, columnists, and staff writers on the opinion page are included in subject headings. Excluded are names of those writing letters …

Arboretum Annual Report, 2006, Connecticut College

Annual Reports

No abstract provided.

Ejaculate Investment In A Promiscuous Rodent, Peromyscus Maniculatus: Effects Of Population Density And Social Role, Tristan A.F. Long, Robert Montgomerie

Biology Faculty Publications

Questions: How does average male investment in ejaculates vary with changing population density (and thus with the risk of sperm competition) in a promiscuous species? Do individual male investment strategies vary with population density?

Data studied: Total testicular mass, somatic mass and annual population density for wild-caught male deer mice, Peromyscus maniculatus, collected by snap-trapping over a 23-year period in Algonquin Provincial Park, Ontario, Canada.

Search methods: We analysed the relation between mean testicular mass and mouse population densities across years. To investigate individual investment patterns, we compared the relation between total testicular mass and somatic mass among males …

Protein Import Into Chloroplasts: An Ever-Evolving Story, Matthew D. Smith

Biology Faculty Publications

Chloroplasts are but one type of a diverse group of essential organelles that distinguish plant cells and house many critical biochemical pathways, including photosynthesis. The biogenesis of plastids is essential to plant growth and development and relies on the targeting and import of thousands of nuclear-encoded proteins from the cytoplasm. The import of the vast majority of these proteins is dependent on translocons located in the outer and inner envelope membranes of the chloroplast, termed the Toc and Tic complexes, respectively. The core components of the Toc and Tic complexes have been identified within the last 12 years; however, the …

Taylor: A Magazine For Taylor University Alumni And Friends (Winter 2006), Taylor University

The Taylor Magazine (1963-Present)

The Winter 2006 edition of Taylor Magazine, published by Taylor University in Upland, Indiana.

Marriage, Biology, And Paternity: The Case For Revitalizing The Marital Presumption, Jana B. Singer

Faculty Scholarship

This article examines the recent history and current status of the marital presumption of paternity. It explores the social, economic and legal developments that have contributed to the erosion of the presumption, focusing in particular on the efforts of federal and state governments to identify and collect financial support from unmarried biological fathers. The article then describes the procedural and equitable doctrines that some courts and legislatures have used to bolster the marital presumption in the face of conflicting biological evidence. Finding these approaches problematic, the article advocates a revitalized marital presumption as a substantive rule of law. It argues …

Book Review: International Environmental Treaties And State Behavior: Factors Influencing Cooperation, Maxwell O. Chibundu

Faculty Scholarship

No abstract provided.

Toward An Ecology Of Intellectual Property: Lessons From Environmental Economics For Valuing Copyright's Commons, Frank Pasquale

Faculty Scholarship

The fair use defense in copyright law shields an intellectual commons of protected uses of copyrighted material from infringement actions. In determining whether a given use is fair, courts must assess the new use's potential effect on the market for the copyrighted work. Fair use jurisprudence too often fails to address the complementary, network, and long-range effects of new technologies on the market for copyrighted works. These effects parallel the indirect, direct, and option values of biodiversity recently recognized by environmental economists. Their sophisticated methods for valuing natural resources in tangible commons can inform legal efforts to address the intellectual …

Graduate Record 2006: A Piece Of The Puzzle, Southwestern Oklahoma State University

SWOSU Yearbooks

The 2006 Graduate Record was produced by the journalism department.

Sayre: Undergraduate Catalog 2006-2007, Southwestern Oklahoma State University

Undergraduate Catalogs

This catalog describes courses offered at Southwestern Oklahoma State University at Sayre, Oklahoma during the 2006-2007 academic year.

Boise State University 2006-2007: Undergraduate Catalog, Boise State University

University Catalogs

No abstract provided.

Graduate Catalog Boise State University: 2006 - 2007, Boise State University

University Catalogs

No abstract provided.

Sorption-Desorption Of Imidacloprid And Its Metabolites In Soil And Vadose Zone Materials, Sharon V. Papiernik, William C. Koskinen, Lucia Cox, Pamela J. Rice, Sharon A. Clay, Nancy R. Werdin-Pfisterer, Kristen A. Norberg

Agronomy, Horticulture and Plant Science Faculty Publications

Sorption-desorption is one of the most important processes affecting the leaching of pesticides through soil because it controls the amount of pesticide available for transport. Subsurface soil properties can significantly affect pesticide transport and the potential for groundwater contamination. This research characterized the sorption-desorption of imidacloprid (1-[(6-chloro-3-pyridinyl)-methyl]-Nnitro-2-imidazolidinimine) and three of its metabolites, 1-[(6-chloro-3-pyridinyl)methyl]-2-imidazolidinone (imidacloprid-urea), 1-[(6-chloro-3-pyridinyl)methyl]-4,5-dihydro-1H-imidazol-2-amine (imidaclopridguanidine), and 1-[(6-chloro-3-pyridinyl)methyl]-1H-imidazol-2-amine (imidacloprid-guanidine-olefin), as a function of changing soil properties with depth in two profiles extending from the surface to a depth of 1.8 or 8 m. Sorption of each compound was highly variable and hysteretic in all cases. Normalizing the sorption coefficients (Kf) …

Influence Of Yellow Foxtail On Corn Growth And Yield, S. A. Clay, K. R. Banken, F. Forcella, M. M. Ellsbury, D. E. Clay, A. E. Olness

Agronomy, Horticulture and Plant Science Faculty Publications

Yellow foxtail [Setaria pumila syn. Setaria glauca (L.) Beauv.] competitive influence on corn (Zea mays L.) growth and yield was investigated at Brookings, South Dakota, and Morris, Minnesota, in 1995 and 1996. Yellow foxtail was seeded at different densities, and at Morris, two levels of nitrogen (N) were applied. Corn biomass measured at V‐6 or V‐8, silking, and harvest and grain yield were correlated negatively to foxtail biomass and density, but the loss differed between years and sites. Nitrogen increased corn growth and decreased yield loss. Defining a single foxtail density or biomass that resulted in a maximum yield …

Division Of Research And Economic Development Annual Report For Fy2006, Uri Division Of Research And Economic Development

Reports (Research and Economic Development)

Annual report for the Division of Research and Economic Development of the University of Rhode Island for the year 2005-2006.

Includes statistics of project proposals, expenditures, URI Foundation Awards, previous annual report summaries and awards received by individual academic and administrative departments.

Reservoir Competency Of Goats For The Ap-Variant 1 Strain Of Anaplasma Phagocytophilum, Robert F. Massung, Thomas N. Mather, Michael L. Levin

Past Departments Faculty Publications (CELS)

Field-collected ticks were used to infect goats with either Ap-ha, a strain associated with human disease, or a variant strain, Ap-Variant 1, of Anaplasma phagocytophilum. Goats were shown to be competent as a reservoir for Ap-Variant 1, and challenge and immunosuppression studies were used to further examine infection in the goat model.

Elderfriends: Relieving Loneliness Among Elders, Kiersten Seeger Ware, Sarah Coble

Case Studies from Age in Action

Educational Objectives

1. To discuss social isolation among older adults.

2. To promote awareness of the ElderFriends program, an intervention newly established in greater Richmond

3. To seek friendly visitors for the ElderFriends program.

Brain Health: Mending The Mind After Age 50, Susan Hardwicke

Case Studies from Age in Action

Educational Objectives

1. Increase understanding of brain function and its potential to improve with age.

2. Describe an application of neuroscience, cognitive training, and nutrition for solving a problem associated with aging.

3. Evaluate neural plasticity with aging.

Nectin-2-Mediated Entry Of A Syncytial Strain Of Herpes Simplex Virus Via Ph-Independent Fusion With The Plasma Membrane Of Chinese Hamster Ovary Cells, Mark G. Delboy, Jennifer L. Patterson, Aimee M. Hollander, Anthony V. Nicola

Microbiology and Immunology Publications

Background

Herpes simplex virus (HSV) can utilize multiple pathways to enter host cells. The factors that determine which route is taken are not clear. Chinese hamster ovary (CHO) cells that express glycoprotein D (gD)-binding receptors are model cells that support a pH-dependent, endocytic entry pathway for all HSV strains tested to date. Fusion-from-without (FFWO) is the induction of target cell fusion by addition of intact virions to cell monolayers in the absence of viral protein expression. The receptor requirements for HSV-induced FFWO are not known. We used the syncytial HSV-1 strain ANG path as a tool to evaluate the complex …

Surgical Infection Society Guidelines For Vaccination After Traumatic Injury, Thomas R. Howdieshell, Daithi Heffernan, Joseph T. Dipiro

Publications from the Office of the Dean

Background: Recommendations for vaccination of injured patients against infection are evolving. Newly-recognized infections, safety considerations, changing epidemiology, and redefinition of patient groups at risk are factors that may influence vaccine development priorities and recommendations for immunization. However, recommendations must often be formulated based on incomplete data, forcing reliance on expert opinion to address some crucial questions. These guidelines provide evidence-based recommendations for the prevention or treatment of infectious morbidity and mortality after traumatic injury, such as soft tissue wounds, human or animal bites, or after splenectomy.

Methods: A panel of experts conducted a thorough review of published literature, …

Medulloblastoma Outcome Is Adversely Associated With Overexpression Of Eef1d, Rpl30, And Rps20 On The Long Arm Of Chromosome 8, Massimiliano De Bortoli, Robert C. Castellino, Xin-Yan Lu, Jeffrey Deyo, Lisa Marie Sturla, Adekunle M. Adesnia, Laszlo Perlaky, Scott L. Pomeroy, Ching C. Lau, Tsv-Kwong Man, Pulivarthi H. Rao, John Y.H. Kim

Radiation Oncology Publications

Background Medulloblastoma is the most common malignant brain tumor of childhood. Improvements in clinical outcome require a better understanding of the genetic alterations to identify clinically significant biological factors and to stratify patients accordingly. In the present study, we applied cytogenetic characterization to guide the identification of biologically significant genes from gene expression microarray profiles of medulloblastoma.

Methods We analyzed 71 primary medulloblastomas for chromosomal copy number aberrations (CNAs) using comparative genomic hybridization (CGH). Among 64 tumors that we previously analyzed by gene expression microarrays, 27 were included in our CGH series. We analyzed clinical outcome with respect to CNAs …

Constituent List 2005-2006, Bowling Green State University. Administrative Staff Council

Administrative Staff Council

The records of the Administrative Staff Council (UA-022) are available in print in the Center for Archival Collections.

Irish Intelligence Staff Work From Kosovo To Kabul, Tom Clonan

Articles

Normally associated with routine troop deployments and logistic support to UN peace keeping and peace enforcement missions worldwide, the Irish Defence Forces have recently dramatically expanded their international intelligence presence abroad. In the wake of 9/11, Ireland’s Military Intelligence Directorate was expanded in order to assess emerging threats to the state – both external and internal – posed by global terrorist networks such as Al Qaeda. As an independent state agency, Ireland’s military intelligence are focused on long term trends within the global security environment across a broad spectrum of threats, from nuclear, biological and chemical weapons proliferation to the …