Life Sciences Commons^™

Acer Saccharum Marshall, Bob Edgin

Specimens by Name

No abstract provided.

Fraxinus Latifolia Benth., Gordon C. Tucker

Specimens by Name

No abstract provided.

Acer Negundo L., Bob Edgin

Specimens by Name

No abstract provided.

Morus Alba L., Bob Edgin

Specimens by Name

No abstract provided.

Acer Circinatum Pursh, Gordon C. Tucker

Specimens by Name

No abstract provided.

Cropwatch No. 99-9, May 14, 1999, Lisa Brown Jasa

Crop Watch (1994–2005)

Inside

Field updates ………………….78

Weather and herbicides ………………….79

Preemergence herbicides after germination ………………….80

Fertilize grasses…………………. 81

Aerial photography ………………….82

Avoiding soil compaction ………………….83

Alfalfa weevil scouting ………………….83

NU corn guide to be reprinted ………………….83

Precipitation updates ………………….84

Meeting Minutes, May 11th, 1999, National Smokejumper Association Executive Committee

National Smokejumper Association Meeting Minutes

Agenda: Minutes of the last executive committee meeting.; Since the meeting was devoted entirely to setting up an agenda for the annual directors meeting, no minutes were recorded.; Adopt-A-Hwy clean up.; Treasurer's Report: treasurer's report and cash flow report.; Membership Report: report.; Old Business:; Mann Gultch remembrance program.; Progress of the Redding reunion in the year 2000.; New Business:.; A better office location.; Hiring a part time worker.; Collecting and counting the ballots returned for the Director positions.; News letter costs and future content.; Adopt-A-Trail project.;

Identification Of Quantitative Trait Loci Affecting Female Reproductive Traits In A Multigeneration Meishan-White Composite Swine Population, G. A. Rohrer, J. J. Ford, T. H. Wise, J. L. Vallet, R. K. Christenson

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

A multigeneration crossbred Meishan- White composite resource population was used to identify quantitative trait loci (QTL) for age at first estrus (AP) and the components of litter size: ovulation rate (OR; number of ova released in an estrous period) and uterine capacity (UC). The population was established by reciprocally mating Meishan (ME) and White composite (WC) pigs. Resultant F1 females were mated to either ME or WC boars to produce backcross progeny (BC) of either ¾ WC ¼ ME or ¼ WC ¾ ME. To produce the next generation (F₃) , ¾ WC ¼ ME animals were mated …

Cropwatch No. 99-8, May 7, 1999, Lisa Brown Jasa

Crop Watch (1994–2005)

Inside

Field updates…………69

Diagnostic Clinic tips…………70

Scout training…………70

New corn disease resource…………70

Panhandle hopper alert…………71

ECB software…………71

Spartan herbicide…………72

Biotechnology meeting…………72

Estimating ECB growth…………73

Noxious weed control…………73

Consumer how-to’s…………76

Expression And Action Of Transforming Growth Factor Beta (Tgfβ1, Tgfβ2, And Tgfβ3) During Embryonic Rat Testis Development, Andrea S. Cupp, Grace Kim, Michael K. Skinner

Department of Animal Science: Faculty Publications

The objective of the current study was to determine the role of transforming growth factor beta (TGFβ) during seminiferous cord formation and embryonic testis development. The expression pattern of mRNA for TGFβ isoforms was evaluated during testis development through a quantitative reverse transcription polymerase chain reaction (QRT-PCR) procedure. Expression of mRNA for TGFβ1 was highest at postnatal day 0 (P0) and P10. In contrast, TGFβ2 was high at embryonic day 15 (E15), declined at E16, and showed a transient increase at P0 through P3 of testis development. Interestingly, expression of mRNA for TGFβ3 was high during embryonic development and then …

A Study On The Multiple Effects Of Egg Shell Color On Egg And Chick Characteristics In Commercial Broiler Breeders, Kirk Martin Vitry

Honors Capstones

No abstract provided.

Control Of Cell Shape And Elongation: The Mreb Protein Of Escherichia Coli., Jason Gioia

Honors Capstones

No abstract provided.

Cbfa2 Is Required For The Formation Of Intra-Aortic Hematopoietic Clusters, Trista North, Ting-Lei Gu, Stacy Terryl, Qing Wang, Louisa Howard, Michael Binder, Miguel Marín-Padilla, Nancy A. Speck

Dartmouth Scholarship

Cbfa2 (AML1) encodes the DNA-binding subunit of a transcription factor in the small family of core-binding factors (CBFs). Cbfa2 is required for the differentiation of all definitive hematopoietic cells, but not for primitive erythropoiesis. Here we show that Cbfa2 is expressed in definitive hematopoietic progenitor cells, and in endothelial cells in sites from which these hematopoietic cells are thought to emerge. Endothelial cells expressing Cbfa2 are in the yolk sac, the vitelline and umbilical arteries, and in the ventral aspect of the dorsal aorta in the aorta/genital ridge/mesonephros (AGM) region. Endothelial cells lining the dorsal aspect of the aorta, and …

Preliminary Determination Of The Number Of Β-1, 3-Glucanase Isoforms And Their Cumulative Activity In The Leaves Of The Strawberry Plant, Maria F. Chen

Honors Capstones

No abstract provided.

Dissolved Organic Carbon Cycling In A Subtropical Seagrass-Dominated Lagoon, Susan Ziegler, Ronald Benner

Faculty Publications

The cycling of dissolved organic matter (DOM) and its significance to ecosystem metabolism was studled over a 16 mo period in a Thalassia testudjnum dominated meadow. The benthos was usually net autotrophic (annual gross primary production to respiration ratio [P:R] = 1.3) while water column respiration (R) exceeded gross primary production (annual P:R = 0.3). Net fluxes of dissolved organic carbon (DOC) from the benthos primarily occurred in the light (0 to 18 mmol C m^-2 d^-1) and from seagrass-dominated areas, suggesting that release of DOC was mainly due to seagrass exudation. Net benthic DOC fluxes measured …

Viola Sororia Willd., John E. Ebinger

Specimens by Name

No abstract provided.

Claytonia Virginica L., John E. Ebinger

Specimens by Name

No abstract provided.

The Mean Spherical Approximation For A Dipolar Yukawa Fluid, Douglas Henderson, Dezso Boda, Istvan Szalai, Kwong-Yu Chan

Faculty Publications

The dipolar hard sphere fluid (DHSF) is a useful model of a polar fluid. However, the DHSF lacks a vapor–liquid transition due to the formation of chain-like structures. Such chains are not characteristic of real polar fluids. A more realistic model of a polar fluid is obtained by adding a Lennard–Jones potential to the intermolecular potential. Very similar results are obtained by adding a Yukawa potential, instead of the Lennard–Jones potential. We call this fluid the dipolar Yukawa fluid (DYF). We show that an analytical solution of the mean spherical approximation (MSA) can be obtained for the DYF. Thus, the …

An Evaluation Of Gastrointestinal Parasites In The Mixed Breed/Pure Breed Pound Dog Population Of East Baton Rouge Parish, Stalanda L. Bradford

Electronic Dissertations and Theses

ABSTRACT An evaluation of gastrointestinal parasites was performed on mixed breed and pure breed pound dogs of East Baton Rouge Parish. Fecal samples were analyzed by the Modified Sheather's Sugar Floatation Technique. Of the 54 canine specimens, 55.6% were female and 44.4% were males. Overall, 19 of the 54 (35.19%) canines were infected. The male canines had the higher infectious condition of the two genders, and the crossbred canines had the higher infectious condition of the two breeds. Also, hookworms were the most prevalent gastrointestinal parasites found within this population.

The Effect Of Acute Exposure To Glyphosate On Reproductive Potential And Embryo Development Of Pseudosuccinea Columella Snail, Ambika N. Osborn

Electronic Dissertations and Theses

Glyphosate (Roundup) is one of the most commonly used broad spectrum herbicides used with little to no toxicity to higher animals or the environment (Smith and Ochme, 1992). Due to its widespread use, there is a continuous contamination of the environment in both soil and water, with this herbicide. This study was developed to determine the effects of sublethal concentrations of glyphosate on development and survivability of Pseudosuccinea columella snails (intermediate host of Fasciola hepatica). This was assessed by acutely exposing third generation snails to varying concentrations (0.01-1ppm) of glyphosate. The snails were kept on artificial spring water to which …

Wpa News 59 (1999), World Pheasant Association

Galliformes Specialist Group and Affiliated Societies: Newsletters

WPA News (May 1999), number 59

Published by the World Pheasant Association

A New Shortbilled Marlin Of The Genus Makaira, From The Yorktown Formation, (Early Pliocene), Eastern North Carolina At Lee Creek Mine, Usa, Harry L. Fierstine

Biological Sciences

An unusually short rostrum from the Yorktown Formation, Early Pliocene, eastern North Carolina at Lee Creek Mine, USA, is described as a new species, Makaira purdyi. The rostrum is morphologically distinct from any Recent or fossil istiophorid in the following combination of characters: (1) fused portion of premaxillae is short and stout with denticlcs covering at least the distal one-half of its dorsal surface; (2) at one-fourth bill length, the cross-section is nearly round (depth/width = 0.95). The new marlin is distinguished from the extant shortbill spearfish, Tetrapturus angustirostris, and any istiophorid with a short rostrum caused by …

Kentucky Warbler (Vol. 75, No. 2), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.

Reductive Dehydroxy Coupling Of 2-(Hydroxymethyl)Indenes To Prepare Ethano-Bridged Bis(2-Indenyl) Ansa-Titanocenes, Hasan Palandoken, Justin K. Wyatt, Shawn R. Hitchcock, Marilyn M. Olmstead, Michael H. Nantz

Chemistry and Biochemistry

New examples of ansa-titanocenes derived from 1,2-bis(2-indenyl)ethane have been prepared. The titanium-mediated reductive coupling of 2-(hydroxymethyl)indenes provided a convenient method for substrate dimerization. Alkyl substitution of the indene ring at C(3) improved the regioselectivity of the reductive coupling to provide the ethylene bis(2-indenyl)ansa-ligands in 29–62% yield.

Isolation, Cloning, And Identification Of Syringomycin E Action Genes Of Saccharomyces Cerevisiae, Stephen D. Stock

Biology

Members of the syringomycin family of antifungal cyclic lipodepsipeptides are produced by Pseudomonas syringae pv. syringae strains as secondary metabolites. These metabolites are potent antifungal agents effective against a broad range of fungi. The antifungal mechanism of action of these compounds has been investigated using syringomycin E and Saccharomyces cerevisiae as a model fungal system. Mutants resistant to the growth inhibitory effects of syringomycin E were isolated after mutagenesis with nitrosoguanidine. These mutants were screened for the production of ergosterol and by complementation with syr2 mutants to eliminate mutants belonging to known syringomycin E-resistant complementation groups. From a total of …

Estimating Total Body Fat In Sharp-Shinned And Cooper's Hawks: Techniques And Application, John P. Delong

Biology

I evaluated the use of three direct methods (fat scoring, condition indices, and multiple regression of external morphological variables) and one indirect method to estimate total body fat (TBF) in Sharp-shinned Hawks (Accipiter striatus) and Cooper's Hawks (A. cooperii). All three direct methods explained a reasonable amount of variation in actual TBF values (r² ≥ 0.82), and all three methods required the use of four equations to account for the categories of species, age, and sex. Indirect methods are those that predict lean mass and subtract the lean mass estimate from the actual body …

Rubisco Deactivation: The Effects Of Growth-Light Conditions And Effects Of Co2 During Shade Events, Jerriann Ernstsen

Biology

Rubisco's (ribulose 1,5-bisphosphate carboxylase/oxygenase) catalytic activity changes as light intensity changes. This study addresses factors that were expected to affect Rubisco deactivation during low light. First, effects of fluctuating light and constant sun or shade during plant growth on Rubisco deactivation and activation were evaluated for basil (Ocimum basilicum and impatiens (Impatiens wallerana). Rubisco activation rate and the degree of Rubisco deactivation were determined from gas-exchange measurements of photosynthesis following a step increase in light intensity. Rubisco activation state during low light was also determined from biochemical analyses of leaf extracts. There were no significant differences in …

Characteristics Of Bald Eagle Communal Roosts In Northern Utah And A Survey Of Eagles Occupying Roosts, Robert B. Wilson

Biology

The numbers of eagles occupying either the Willard Canyon roost or the Ogden Bay roost exceeded the combined total of other communal roosts documented in Utah. These roosts are among the largest known communal roosts in the lower 48 states, and the largest documented winter roosts within the McKenzie-Intermountain Flyway. During the winters of 1997-98 and 1998-99 I surveyed several Bald Eagle (Haliaeetus leucocephalus) roost sites in northern Utah to document their geographic location, habitat, and occupancy. I conducted surveys from December 1997 to April 1998 and December 1998 to April 1999. Most winter roosts were communal, as …

The South Coast Estuarine Fishery. A Discussion Paper., Rod Pearn, Tony Cappelluti

Fisheries Management Papers

This discussion paper proposes a way for the South Coast Estuarine Fishery to address issues relating to the long-term sustainable management and sharing of the fish resource.

Proposals For Community Discussion. A Quality Future For Recreational Fishing In The Gascoyne. A Five-Year Management Strategy For Recreational Fishing., Gascoyne Recreational Fishing Working Group

Fisheries Management Papers

Gascoyne has seen a series of rapid developments in recreational fisheries management, starting with the introduction of state-wide bag limits in 1991; followed by area specific controls at Ningaloo in 1992; landing limits in Exmouth Gulf in 1993; strict controls on the take of pink snapper in Shark Bay’s inner gulfs in 1997; new bag limits for Shark Bay in 1998; and the introduction of a management system for the charter and aquatic tour industry in 1999. The management proposals presented for community discussion in this paper are aimed at maintaining or improving the quality and diversity of the Gascoyne's …