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Data Assimilation And Model Evaluation Experiment Datasets, Chung-Chieng A. Lai, Wen Qian, Scott M. Glenn

Faculty Publications

The Institute for Naval Oceanography, in cooperation with Naval Research Laboratories and universities, executed the Data Assimilation and Model Evaluation Expertiment (DAMÉE) for the Gulf Stream region during fiscal years 1991-1993. Enormous effort has gone into the preparation of several high-quality and consistent datasets for model initialization and verification. This paper describes the preparation process, the temporal and spatial scopes, the contents, the structure, etc., of these datasets.

The goal of DAMÉE and the need of data for the four phases of experiment are briefly states. The preparation of DAMÉE datasets consisited of a series of processes: 1) collection of …

Humic And Fulvic Acids: Sink Or Source In The Availability Of Metals To The Marine Bivalves Macoma Balthica And Potamocorbula Amurensis?, Alan W. Decho, Samuel N. Luoma

Faculty Publications

Humic acids (HA) and fulvic acids (FA) are common forms of organic matter in marine sediments, and are routinely ingested by deposit- and suspension-feeding animals. These compounds may be a sink for metals, implying that once metals are bound to humic substances they are no longer available to food webs. A series of experiments was conducted to quantitatively examine this premise using 2 estuarine bivalves from San Francisco Bay, USA: the suspension feeder Potarnocorbula arnurensis and the facultative deposit feeder Macoma balthica. HA and FA, isolated from marine sediments, were bound as organic coatings to either hydrous ferric oxides …

Rodent Bc1 Rna Gene As A Master Gene For Id Element Amplification, Joomyeong Kim, John A. Martignetti, M. Richard Shen, Jürgen Brosius, Prescott Deininger

Faculty Publications

ID elements are short interspersed repetitive DNA elements (SINEs) which have amplified in rodent genomes via retroposition, a process involving an RNA intermediate. BC1, an abundant ID-related transcript, is transcribed from a conserved, single-copy gene in rodents. The gene encoding BC1 RNA represents one of the earliest and possibly the first ID-containing sequence. Comparison of consensus sequences of each rodent ID with its corresponding BC1 RNA gene showed that the variations of BC1 RNA within rodents corresponded to specific changes within the ID consensus sequence for each rodent species. This supports the hypothesis that the BC1 gene is a master …

Coastal Eutrophication Near The Mississippi River Delta, R. Eugene Turner, Nancy Rabalais

Faculty Publications

CHANGES in delivery of river-borne nutrients such as dissolved phosphate, nitrate and silicate, owing to land-use changes and anthropogenic emissions, are known to result in eutrophication1— enhanced phytoplankton blooms—and more severe hypoxic events2–1 in many enclosed bays and seas. Although similar ecological effects might be expected on continental shelves, the occurrence of such eutrophication has remained unresolved5. Here we present evidence of eutrophication of the continental shelf near the outflow of the Mississippi river, obtained by quantifying biologically bound silica (BSi) in diatom remnants within dated sediment cores. BSi accumulation rates are greatest in water depths of 20 to 50 …

Ain't?, Susan Grover

Faculty Publications

No abstract provided.

Multiple Elements In Human Β-Globin Locus Control Region 5′ Hs 2 Are Involved In Enhancer Activity And Position Independent, Transgene Expression, John J. Caterina, Dominic J. Ciavatta, David Donze, Richard R. Behringer, Tim M. Townes

Faculty Publications

The human β-globin Locus Control Region (LCR) has two important activities. First, the LCR opens a 200 kb chromosomal domain containing the human ε-, γ- and β-giobin genes and, secondly, these sequences function as a powerful enhancer of ε-, γ- and β-globin gene expression. Erythrold-specific, DNase I hypersensitive sites (HS) mark sequences that are critical for LCR activity. Previous experiments demonstrated that a 1.9 kb fragment containing the 5′ HS 2 site confers position-independent expression in transgenic mice and enhances human β-giobin gene expression 100-fold. Further analysis of this region demonstrates that multiple sequences are required for maximal enhancer activity; …

A Rationale For Coastal Wetland Restoration Through Spoil Bank Management In Louisiana, Usa, R. Eugene Turner, E. M. Swenson, J. M. Lee

Faculty Publications

The rationale and outline of an implementation plan for restoring coastal wetlands in Louisiana is presented. The rationale for the plan is based on reversing the consequences of documented cause-and-effect relationships between wetland loss and hydrologic change. The main feature is to modify the extensive interlocking network of dredged spoil deposits, or spoil banks, by reestablishing a more natural water flow at moderate flow velocity (/sec). Guidelines for site selection from thousands of potential sites are proposed. Examples of suitable sites are given for intermediate marshes. These sites exhibit rapid deterioration following partial or complete hydrologic impoundment, implying a strong …

The Herpes Simplex Virus Thymidine Kinase Gene As A Conditional Negative-Selection Marker Gene In Arabidopsis Thaliana, Mihály Czakó, László Márton

Faculty Publications

The human herpes simplex virus thymidine kinase type 1 gene (HSVtk) acts as a conditional lethal marker in mammalian cells. The HSVtk-encoded enzyme is able to phosphorylate certain nucleoside analogs (e.g. ganciclovir, an antiherpetic drug), thus converting them to toxic DNA replication inhibitors. The utility of HSVtk as a conditional negative-selection marker was explored in Arabidopsis thaliana (L.) Heynh. HSVtk was introduced into Arabidopsis by Agrobaderium-mediated transformation. Transgenic plants were morphologically indistinguishable from wild type and exhibited normal fertility. Canciclovir at lO^-5to 10^-4 M drastically reduced shoot regeneration on transgenic, HSVtk* root explants …

Morality And American Foreign Policy By Robert W. Mcelroy Traditions And Values In Politics And Diplomacy By Kenneth W. Thompson, William P. Kreml

Faculty Publications

No abstract provided.

Comparison Of Dietary Overlap Between Allopatric And Sympatric Geckos, Paul D. Klawinski, R. Kathryn Vaughan, Daniel Saenz, William Godwin

Faculty Publications

Two gecko species, Hemidactylus turcicus and Cyrtopodion scabrum, have been introduced into the Port of Galveston, Texas. While H. turcicus has been established for a longer period of time, the relatively recent introduction of C. scabrum near the entrance of the Port has apparently led to the displacement of H. turcicus in that area. This has resulted in a distribution in which the two populations’ are largely allopatric except for a narrow band of sympatry at the periphery of each of their ranges. We examined stomach contents of both species in allopatry and sympatry in order to determine if …

Growth Models Of Loblolly And Shortleaf Pine Red-Cockaded Woodpeckers Nesting Trees, W. D. Hacker, W. G. Ross, David Kulhavy

Faculty Publications

No abstract provided.

Characterization Of An Old-Growth Bottomland Hardwood Wetland Forest In Northeast Texas: Harrison Bayou, Laurence C. Walker, Thomas Brantley, Virginia Burkett

Faculty Publications

Most wetland losses in the southern region over the past 200 years have occurred in bottomland hardwood forests. By 1980 the original extent of palustrine bottomland in Texas had been reduced by 63%, from roughly 16 to 6 million acres. Additional losses have occurred during more recent years as a result of conversion to agriculture and timber harvests; these factors and the need to supply new hardwood chip mills in the region pose a potential threat to the remaining hardwood resource. The Harrison Bayou watershed in northeast Texas contains one of the few relatively undisturbed bottomland hardwood wetland forests in …

Building Blocks Of Analysis: Using Simple "Sesame Street Skills" And Sophisticated Educational Learning Theories In Teaching A Seminar In Legal Analysis And Writing, Nancy A. Wright

Faculty Publications

No abstract provided.

Backfilling Canals To Restore Wetlands: Empirical Results In Coastal Louisiana, R. Eugene Turner, James M. Lee, Christopher Neill

Faculty Publications

Wetland restoration is largely a developing science and engineering enterprise. Analyses of results are too few and constrained to observations over a few years. We report here on the effectiveness of one restoration technique used sparsely in coastal Louisiana for several decades. Canals have been dredged in coastal Louisiana wetlands since 1938 for oil and gas exploration and extraction. These canals are typically dredged to 2.5 m depth and are 20 to 40 m wide. Canal lengths vary from 100 m to several 1000s m in the case of outer continental shelf pipeline canals that cross the wetlands.

Today, thousands …

Carbonic Anhydrase Activity In Isolated Chloroplasts Of Wild-Type And High-Co2-Dependent Mutants Of Chlamydomonas Reinhardtii As Studied By A New Assay, G. L. Katzman, S. J. Carlson, Y. Marcus, J. V. Moroney, R. K. Togasaki

Faculty Publications

No abstract provided.

Association Of The Catalytic Subunit Of Aspartate Transcarbamoylase With A Zinc‐Containing Polypeptide Fragment Of The Regulatory Chain Leads To Increases In Thermal Stability, Cynthia B. Peterson, Bin‐Bing ‐B Zhou, Durwynne Hsieh, Angela N.H. Creager, H. K. Schachman

Faculty Publications

The regulatory enzyme aspartate transcarbamoylase (ATCase), comprising 2 catalytic (C) trimers and 3 regulatory (R) dimers, owes its stability to the manifold interchain interactions among the 12 polypeptide chains. With the availability of a recombinant 70‐amino acid zinc‐containing polypeptide fragment of the regulatory chain of ATCase, it has become possible to analyze directly the interaction between catalytic and regulatory chains in a complex of simpler structure independent of other interactions such as those between the 2 C trimers, which also contribute to the stability of the holoenzyme. Also, the effect of the interaction between the polypeptide, termed the zinc domain, …

Biological And Genetic Characterization Of A Hemagglutinating Coronavirus Isolated From A Diarrhoeic Child, X. M. Zhang, W. Herbst, K. G. Kousoulas, J. Storz

Faculty Publications

The coronavirus strain HECV‐4408 was isolated from diarrhea fluid of a 6‐year‐old child with acute diarrhea and propagated in human rectal tumor (HRT‐18) cells. Electron microscopy revealed coronavirus particles in the diarrhea fluid sample and the infected HRT‐18 cell cultures. This virus possessed hemagglutinating and acetylesterase activities and caused cytopathic effects in HRT‐18 cells but not in MDBK, GBK and FE cells. One of four S‐specific monoclonal antibodies reacted in Western blots with HECV‐4408, BCV‐L9 and BCV‐LY138 but not with HCV‐OC43, and two reacted with BCV‐L9 but not with HECV‐4408, BCV‐LY138 and HCV‐OC43. One S‐specific and two N‐specific monoclonal antibodies …

Paraganglioma In The Vertebral Canal Of A Cow, Dae Yong Kim, Mae K. Lopez, Alvin C. Camus, E. Clay Hodgin, D. Gene Luther

Faculty Publications

No abstract provided.

Three New Species And A New Record Of Neotropical Pocadlus Erichson 1843 (Coleoptera Nitidulidae), R. A.B. Leschen, C. E. Carlton

Faculty Publications

Three species of nitidulid beetles from Ecuador and Costa Rica are described as new: Pocadius maquipucunensis, P. ephite, and P. ephite and P. jelineki. These species were collected from puffball fungi of the genus Lycoperdon or in flight-intercept traps located in high-altitude cloud forests. Pocadius dimidiatus Jelínek 1977, previously known from Argentina, is reported from Tambopata Province, Peru. Specimens of P. dimidiatus were collected from fungi in the genera Lycoperdon and Geaster or in flight-intercept traps located in lowland tropical rainforest. © 1994 Taylor & Francis Group, LLC.

Roles Of The Glabrous1 And Transparent Testa Glabra Genes In Arabidopsis Trichome Development, J. C. Larkin, D. G. Oppenheimer, A. M. Lloyd, E. T. Paparozzi, M. D. Marks

Faculty Publications

No abstract provided.

Associations Of Methanotrophs With The Roots And Rhizomes Of Aquatic Vegetation, G. M. King

Faculty Publications

Results of an in vitro assay revealed that root-associated methane consumption was a common attribute of diverse emergent wetland macrophytes from a variety of habitats. Maximum potential uptake rates (V(maxp)) varied between about 1 and 10 μmol g (dry weight)-1 h-1, with no obvious correlation between rate and gross morphological characteristics of the plants. The V(maxp) corresponded to about 2 x 108 to 2 x 109 methanotrophs g (dry weight)-1, assuming that root-associated methanotrophs have cell- specific activities comparable to those of known isolates. V(maxp) varied seasonally for an aquatic grass, Calamogrostis canadensis, and for the cattail, Typha latifolia, with …

Survival And Recovery Of Methanotrophic Bacteria Starved Under Oxic And Anoxic Conditions, P. Roslev, G. M. King

Faculty Publications

The effects of carbon deprivation on survival of methanotrophic bacteria were compared in cultures incubated in the presence and absence of oxygen in the starvation medium. Survival and recovery of the examined methanotrophs were generally highest for cultures starved under anoxic conditions as indicated by poststarvation measurements of methane oxidation, tetrazolium salt reduction, plate counts, and protein synthesis. Methylosinus trichosporium OB3b survived up to 6 weeks of carbon deprivation under anoxic conditions while maintaining a physiological state that allowed relatively rapid (hours) methane oxidation after substrate addition. A small fraction of cells starved under oxic and anoxic conditions (4 and …

Beet Armyworms (Lepidoptera: Noctuidae) In Northeast Louisiana: Observations On An Uncommon Insect Pest, E. Burris, J. B. Graves, B. R. Leonard, C. A. White

Faculty Publications

No abstract provided.

Record Conditions For Cycling [4], Jonathan E. Snow, Mark Drela

Faculty Publications

No abstract provided.

Chromosome And Sperm Size Of Holsteins With And Without Bovine Leukocyte Adhesion Deficiency, H. C. Steinholt, J. E. Chandler, R. A. Baron, R. W. Adkinson

Faculty Publications

The objective was to evaluate bull differences in chromosomal and spermatozoal areas related to the occurrence of the bovine leukocyte adhesion deficiency syndrome. Lymphocyte chromosomes from 30 Holstein bulls and 2 Holstein heifers were measured using image analysis and computer-enhanced video-microscopy. Spermatozoal head areas from 29 of the 30 bulls were measured. Autosomal rank was based on decreasing area. Average total autosomal areas were not the same across bulls. One group of bulls had significantly smaller average chromosomal areas than the others; this group carried bovine leukocyte adhesion deficiency syndrome. Area measures of spermatozoal heads showed that bulls with bovine …

Nanovid Microscopy For Assessing Sperm Membrane Changes Induced By In Vitro Capacitating And Acrosomal Reacting Procedures, Suzanne D. Degelos, Michael P. Wilson, John E. Chandler

Faculty Publications

ABSTRACT: This study was to verify the usefulness of Nanovid microscopy techniques for evaluating induced modifications in bovine spermatozoal membranes. Frozen thawed bovine sperm were labeled with 20‐nm colloidal gold particles bound to concanavalin A (ConA) or heparin ligands. Sperm membrane changes were induced in vitro by capacitating and acrosome‐reacting procedures. Capacitatton was induced by incubation with 10 μg/ml of heparin for 4 hours at 37°C, 5% CO2, and high humidity. Membrane changes associated with the acrosome reaction were induced by addition of lysophosphatidyicholine (100 μg/ml) and incubation for 15 minutes at 37°C, 5% CO2, and high humidity. Gray intensity …

The Human Remains From Carter-Ranch Pueblo,Arizona: Health In Isolation, Marie E. Danforth, Della Collins Cook, Stanley G. Knick Iii

Faculty Publications

Health patterns in the Pueblo III (A.D. 1100-1225) population from Carter Ranch Pueblo were investigated in skeletal remains from 34 individuals. Childhood health disruptions were assessed using stature, linear enamel hypoplasias, and Harris lines. Periostitis, arthritis, anemia, trauma, and dental pathology were also observed. Although the low juvenile representation is probably an effect of age-biased mortuary practices, results suggest a healthy population compared to larger southwestern sites. Trauma levels at the site are quite high, possibly indicating burial practices differentiated on the ability to work or other health criteria. Additionally, a number of genetic anomalies are present, suggesting an isolated …

A Report On The Assessment Procedures Used In The Evaluation Of Student Teaching At The Middle School Level, Joane W. Mckay

Faculty Publications

This conference paper on assessment of the qualities of student teachers in middle schools discusses the concepts of authentic assessment; continuous evaluation; the roles of the cooperating teacher and the university coordinator; and assessment procedures used at the University of Northern Iowa. Eleven categories are presented for use in determining; at mid-term of the student teaching experience; whether a student teacher is meeting the requirements to become an effective teacher. These are: knowledge of content and skills areas; knowledge of learners/learning process; use of instructional planning strategies; use of instructional strategies/teaching styles; use of management and discipline strategies; use of …

Lesbian Perspective, Lesbian Experience, And The Risk Of Essentialism, Patricia A. Cain

Faculty Publications

No abstract provided.

Parents' Religion And Children's Welfare: Debunking The Doctrine Of Parents' Rights, James G. Dwyer

Faculty Publications

The scope, weight, and assignment of parental rights have been the focus of much debate among legal commentators. These commentators generally have assumed that parents should have some rights in connection with the raising of their children. Rarely have commentators offered justifications for attributing rights to persons as parents, and when they have done so they have failed to subject those justifications to close scrutiny. This Article takes the novel approach of challenging parental rights in their entirety. The author explores the fundamental questions of what it means to say that individuals have rights as parents, and whether it is …