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Turkish Journal of Veterinary & Animal Sciences

No abstract provided.

Acute Phase Effect Of Trichloroethylene Ingestion On Some Biological Markers In Dogs, Recep Aslan, Mehmet Tütüncü, S. Oktay Aslan, Yilmaz Dündar

Turkish Journal of Veterinary & Animal Sciences

Trichloroethylene (TE) is an environmental toxic solvent hazardous to human and domestic animals and well known in the industrial sector. The purpose of this study was to determine whether oral TE plays a role in lipid oxidation and tissue damage. Fourteen dogs were treated with an oral toxic dose of 0.5 ml/kg T.E. The acute changes that occurred in creatine kimase (CK), malondialdehyte (MDA), superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) were investigated in blood samples taken before application and 8, 24, 48, 72 and 168 hours after treatment. SOD and GSH-Px activities decreased, protein, albumin and alcalen phosphate did …

Cover And Contents

Turkish Journal of Veterinary & Animal Sciences

No abstract provided.

Investigations On The Biology Of Red Mullet ( Mullus Barbatus Linnaeus, 1758) In Edremit Bay, Aegean Sea, Turkey, Özlem Çeli̇k, Hati̇ce Torcu

Turkish Journal of Veterinary & Animal Sciences

In this study, has been carried out to investigate some growth features of the red mullet ( Mullus barbatusLinnaeus, 1758) which is the important commercially species of the North Aegean Sea. Have been examined: Sex distrubution, growth in lenght and weight,condition factor, diet regimes and spawning period. The percentage of females was 68.78 % and males 31.22 % out of 474 specimens which ranged between age group I - IV. The lenght and weight differences between females and males were not statistictically significant. The lenght- weight relationship and growth equations were estimated as follows, respectively: W =0.0157 L 2.9811 , …

Cover And Contents

Turkish Journal of Veterinary & Animal Sciences

No abstract provided.

Cover And Contents

Turkish Journal of Veterinary & Animal Sciences

No abstract provided.

A Study On Blood Group Allelles Of Denizli Fowl, Fevzi̇ Tahi̇r Aksoy, Okan Ertuğrul, Fati̇h Atasoy, Şükrü Gürler, Meti̇n Erdoğan

Turkish Journal of Veterinary & Animal Sciences

Blood group alleles and their frequencies were estimated within a Denizli fowl flock. Sixteen full sib family groups we- re formed to facilitate the identification of segregating alleles. Immune antisera were produced by means of reciprocal immunizati- ons between the parents. Reference reagents were obtained from W. E. Briles, Department of Biological Sciences, Northern Illino- is University. Reference reagents were used for the blood typing. In the flock in question, the allele genes which belong to blood group systems A, B, C, D, E and L were estimated and their frequencies calculated. In the A blood group system, A1 , …

Cover And Contents

Turkish Journal of Veterinary & Animal Sciences

No abstract provided.

Cover And Contents

Turkish Journal of Veterinary & Animal Sciences

No abstract provided.

Organic Carbon Supply And Metabolism In A Near-Stream Groundwater Ecosystem, H. M. Valett, C. C. Dahm, Michelle A. Baker

Biology Faculty Publications

In groundwater ecosystems, in situ primary production is low, and metabolism depends on organic matter inputs from other regions of the catchment. Heterotrophic metabolism and biogeochemistry in the floodplain groundwater of a headwater catchment (Rio Calaveras, New Mexico, USA) were examined to address the following questions: (1) How do groundwater metabolism and biogeochemistry vary spatially and temporally? (2) What factors influence groundwater metabolism? (3) What is the energy source for groundwater metabolism?

At Rio Calaveras, surface discharge and water table elevation increased at the onset of spring snowmelt. Groundwater biogeochemical changes in response to snowmelt included increases in dissolved oxygen …

Family Leave And The Gender Wage Gap, Michael Selmi

GW Law Faculty Publications & Other Works

In this article, I argue that the key to achieving greater gender equality in the workplace is finding a way to change the behavior of men with respect to the care of children. Until now, most suggestions have focused on changing the behavior of women or employers, but women continue to face significant disadvantages in the workplace despite substantial changes in their labor force behavior. In the first part of the article, I analyze the latest data and conclude that the gender pay gap reflects both women's actual labor market behavior, which still differs from men's, and employers' exaggerated responses …

Tgf-Beta And Ifn-Gamma Direct Macrophage Activation By Tnf-Alpha To Osteoclastic Or Cytocidal Phenotype., Sw Fox, K Fuller, Ke Bayley, Tj Chambers

School of Biomedical Sciences

No abstract provided.

Faculty Handbook, Georgia Southern University

Faculty Handbooks

Faculty Handbook for Georgia Southern University for the 2000-2001 academic year. The Faculty Handbook is published online by the Office of the Vice President for Academic Affairs and archived in Digital Commons@Georgia Southern.

Ovipositional Behavior Of The 12-Spotted Lady Beetle, Coleomegilla Maculata: Choices Among Plant Species And Potential Factors Influencing Those Choices, Marisa Lynn Griffin

University of Kentucky Master's Theses

Coleomegilla maculata is a beneficial coccinellid commonly found in sweet cornfields in Kentucky. Previous work on C. maculata has shown an ovipositional preferencefor the weed Acalypha ostryaefolia, compared to three selected weed species and corn. Also, predation of C. maculata egg clusters on A. ostryaefolia was less compared toclusters on corn and the presence of A. ostryaefolia led to higher densities of C. maculata larvae on corn.

I determined C. maculata ovipositional preference among weed species in fieldtests using nine common weeds. I also examined ovipositional preference using just A.ostryaefolia and Abutilon theophrasti. I assessed the roles of …

What Does The Constitution Say About The Vouchers?, John H. Garvey

Scholarly Articles

No abstract provided.

The Tower Clock 2000, Tower Clock

Tower Clock Yearbooks

No abstract provided.

Masculinity And Femininity: Origins And Implications (Chapter Two Of Growing Strong Daughters), Lisa Graham Mcminn

Faculty Publications - Department of Sociology

Excerpt: "God could have made one sex, but he chose to create two distinct image-bearing creatures. Articulating conclusions about how women and men bear God's image differently is difficult, perhaps because we believe we must first figure out which differences to attribute to environment and which are knitted into our beings at conception."

Social Software, Joel Slayton

SWITCH

No abstract provided.

Ideaconsciousness Networks, Wendy Angel

SWITCH

In this article, the author utilizes a theoretical approach to discuss the complexity of digital networks and the necessary cognitive adaptations humans need to process the amount of information shared over them. Several propositions are discussed including fuzziness, conscious Ideation, knowledge networks, idea structures, and idea coercion. It is theorized that ideas make up our consciousness and provide a more open definition to the experiences that combine the cognitive process. However, the fuzziness of uncertainty also raises ideas of its essential factor in our conscious exploration and that fuzziness of knowledge does not make knowledge obsolete. This posits that there …

Vaccination In A Model Of An Epidemic, M. S. Abual-Rub

All Works

Vaccination has been included in a model which describes an epidemic. A traveling wave solution together with an equilibrium and stability analysis have been done to the model.

Use Of Oak Hammocks By Neotropical Migrant Songbirds During Stopover In Coastal South Carolina, Scott Glen Somershoe

College of Graduate Studies: Theses & Dissertations (1964–2006)

Many species of Neotropical migrant songbirds have been reported to be declining in the last few decades, and the loss and fragmentation of stopover habitat has been implicated as a potential cause of these population declines. To manage properly a fragmented forest landscape for migrating songbirds information is needed on how the size and the habitat of forest fragments influence their use by migrants during stopover. Therefore, I conducted censuses of Neotropical migrant birds in eight oak hammocks of varying size (0.32-3.08 ha) at the Savannah National Wildlife Refuge, Jasper County, South Carolina. Censuses were conducted at 0600-1030 h during …

The Abundance And Distribution Of Arthropods From Sandstone Outcrops In Coffee County, Georgia, F. Michael Mcaloon

College of Graduate Studies: Theses & Dissertations (1964–2006)

Broxton Rocks Nature Preserve, a 1,233-hectare preserve containing late Pleistocene sandstone (Altamaha grit) outcrops of various sizes and topographies in a conifer-dominated loblolly pine - hardwood forest, represents a unique habitat to the coastal plain of Georgia. Using modified pitfall traps, I sampled arthropods in four subhabitats (bare rock, lichens, ecotone, wiregrass) at Broxton Rocks between January and November 1999. A total of 312,006 arthropods belonging to four classes (Arachnida, Diplopoda, Chilopoda, Insecta) represented by 24 orders was trapped. The numbers of arthropods varied among habitat types, and over the collection dates (P

The On Line Determination Of Mercury In Process Streams Using Atomic Spectrometry, Noel Kumar Brahma

School of Geography, Earth and Environmental Sciences Theses

On-line systems for monitoring mercury in liquid and gaseous production and waste streams have been developed, utilising atomic fluorescence spectrometry (AFS) as the basis for detection. Instrumentation has been designed for unattended continuous operation. Laboratory chemistries for the vapour generation of mercury, normally performed off-line in batch mode, have been adapted and optimised for continuous, flow-injection analysis for varying sample types and chemical forms of mercury. The system has typical analysis cycle of 7 minutes, a limit of detection of 10 pg ml ˉ¹ a linear range up to 100 µg ml ˉ¹ and has been applied in industrial environments …

Trace Metal And Speciation Analysis Using Ion-Exchange And Energy Dispersive X-Ray Fluorescence Spectrometry, Elena Menendez-Alonso

School of Geography, Earth and Environmental Sciences Theses

Studies have been carried out on specific ion-exchange (Dowex 50W-X8 and Dowex 1-X8) and chelation (Chelex-100) resins, in order to determine their physical and chemical characteristics, to understand and explain their limits of function and to optimise their use as substrates in trace metal and speciation measurement by EDXRF. Structural information was obtained by scanning electron microscopy and x-ray microanalysis showing a homogeneous distribution of functional groups and retained ions on both sectioned and whole resins. Particle size experiments performed on Dowex 50W-X8 (38 - 840 µm) showed that this parameter has no effect on the relationship between intensity of …

Determination Of Actinide Elements In Environmental Samples By Icp-Ms, Jason Bedford Truscott

School of Geography, Earth and Environmental Sciences Theses

Methods for the determination of the actinide elements in water, biological, soil and sediment samples have been developed using on-line solid phase extraction and high performance liquid chromatography (HPLC) coupled with inductively coupled plasma mass spectrometry (ICP-MS). Initial applications utilised a commercially available resin, namely TRU-Spec resin, for efficient removal of the matrix prior to elution of uranium and thorium analytes. Comparative analyses of reference materials and natural water samples from Plymouth and Dartmoor demonstrated significant improvement in precision and speed of analysis by using TRU-Spec coupled to ICP-MS compared with alpha spectrometry. Further applications of the TRU-Spec resin for …

Microfaunal Investigation Of The Early Toarcian (Lower Jurassic) Extinction Event In N.W. Europe, Mark Donald Hylton

School of Geography, Earth and Environmental Sciences Theses

The Early Jurassic was a time of rapidly rising sea-level associated with the extensive spread of anoxic bottom waters. Sea-level rise across the Pliensbachian - Toarcian boundary culminated in the falciferum Zone of the Toarcian and is one of the best authenticated eustatic events in the Jurassic. This major transgressive pulse was marked by deepw ater marine sequencesa nd was associatedw ith the deposition of organic-rich shales. The development of anoxia coincides with a notable period of mass extinction of the marine fauna. High resolution sampling and study of the microfaunast hrough sequencesin N. W. Europe confirm that benthic foraminiferal. …

Metal Biogeochemistry Of A Mine Contaminated Estuarine-Coastal System In Sw Spain, Charlotte Braungardt

School of Geography, Earth and Environmental Sciences Theses

The aim of this project was to investigate the biogeochemistry and transport of metals in a river/estuarine system contaminated by acid mine drainage. The Rio Tinto and Rio Odiel drain a metalliferous mining area in the Iberian Pyrite Belt in the south-west of Spain. The pH values in the rivers were low (< 3) and dissolved metal concentrations were . extremely high, up to 2.6 mM Zn, 860 \M Cu, 6.0 jaM Cd and 72 nM U . The seasonal cycle of low precipitation and flash floods was identified as an important factor in generating the more severe contamination of the rivers with Fe, A l , Mn, Zn, Cu, N i , Co and Cd observed during autumn and winter, compared to spring and summer. The estuarine behaviour of dissolved Fe, Mn, Zn, Cu, N i , Co and Cd was primarily = controlled by pH. Apart from an addition of these metals from the sediment in the upper Tinto estuary, conservative mixing was observed up to pH ~ 5 (at S ~ 30), above which Fe, Mn, Zn, Cu, N i and Co were removed from solution. Voltammetric speciation studies showed that Cu complexing organic ligands (logK'cuL ~ 11-5, CL = 32 - 199 nM) in the estuary were saturated, and thermodynamic calculations indicated that the concentration of Cu^"^ reached values (pCu^"^ < 9) that are toxic to some marine and estuarine organisms. The estimation of fluxes indicated that the dissolved metal export from this system to thecoastal zone averages 101 d'^ Zn, 2.3 t d"' Cu, 180 kg d"^ N i and 236 kg d"^ Co, with higher contributions during wet, compared to the dry seasons. On-line measurements of Zn, Cu and N i in the Gulf of Cadiz revealed metal plumes associated with the Tinto/Odiel system and the Guadiana and Guadalquivir rivers. As a result of entrainment by the Atlantic Ocean surface current flowing into the Mediterranean Sea, the metal contamination in waters of the Gulf of Cadiz is transported south and eastward.

Development Of Novel Sensors For Anions Of Environmental Interest, Thierry Le Goff

School of Geography, Earth and Environmental Sciences Theses

A range of ion-selective electrodes (ISEs) for the determination of nitrate has been produced based upon rubbery membranes having covalently bound betaine salt sensor molecules. The best performing electrode contained N,N,N-triallyl leucine betaine (6.5 % m/m) covalently bound to polystyrene-block-polybutadiene-block-polystyrene (SBS) (43.5% m/m), with 2-nitrophenyIoctyl ether (2-NPOE) as solvent mediator (40 % m/m) and dicumyl peroxide (DCP) as free radical initiator (10% m/m). The Nemstian slope was -59.1 mV per decade over a linear range of 1 x 10'^-5 x 10"^ mol dm'^ nitrate, a limit of detection of 0.34 pmol dm'^ nitrate and a selectivity coefiBcient for nitrate against …

Development And Investigation Of The Properties Of An Electrochemically Regenerable Chemically Modified Electrode For Chemeluminescence Detection Of Analytes In Solution, Claire Elizabeth Williams

School of Geography, Earth and Environmental Sciences Theses

The aim of this study was to exploit the sensitivity of the chemiluminescent ruthenium tris(2,2'-bipyridme) redox system for analytical purposes by producing electrochemically regenerable electrodes modified with a polymer derivative of this complex. Ruthenium tris(4-meth}i-4' -vinyl-2,2' -bipyridine) bis(hexafluorophosphate) was synthesised and subsequently polymerised onto an electrode surface using the technique of cyclic voltammetry. A potential was applied to the resulting Chemically Modified Electrode (CME) and upon reaction of the ruthenium centres with an analyte in solution, chemiluminescence was observed. Measurement of the emission intensity was used for the determination of the analyte concentration The ruthenium centres were subsequently regenerated by …

Speciation Of Mercury By Chromatography Coupled With Atomic Spectrometry, Helen Elisabeth Louise Armstrong

School of Geography, Earth and Environmental Sciences Theses

A commercial GC-AFS instrument has been developed and optimised for the speciation of organomercury. This instrument couples a GC oven to a modified atomic fluorescence detector via a ceramic pyrolyser. Organomercury compounds in dichloromethane solvent were directly injected through a Programmable Temperature Vaporiser Injector onto a DBl Megabore column. Once separated, the compounds eluted from the column and were atomised in the pyrolyser then detected by AFS. The direct injection technique, ceramic pyrolysis design and argon purged detector have improved previous instrument designs by enhancing and maintaining sensitivity. The instrumental limit of detection was determined to be 0.25 pg Hg …