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Effects Of Shipping And Heat Stress On Embryonic Mortality In Cattle, Sarah Fields, George Perry

SDSU Extension Extra Archives

Embryonic loss is the greatest economic loss in the cow/calf industry, affecting number of cows carrying to term and percent calf crop weaned. Fertilization rates are usually between 90% and 100% when semen is present at ovulation. Fertilization usually takes place, but conception rates (number of animals that conceive divided by number of animals inseminated) are usually around 70% for natural service or artificial insemination. Although nature (poor oocyte quality, disease, chromosomal abnormalities, etc.) contributes much of this loss, management practices can also increase embryonic mortality. Stress, particularly heat and shipping stress, can be detrimental to embryos and decrease pregnancy …

Structural Analysis Of Csos1a And The Protein Shell Of The Halothiobacillus Neapolitanus Carboxysome, Yingssu Tsai, Michael R. Sawaya, Gordon C. Cannon, Fei Cai, Eric B. Williams, Sabine Heinhorst, Cheryl A. Kerfeld, Todd O. Yeates

Faculty Publications

The carboxysome is a bacterial organelle that functions to enhance the efficiency of CO2 fixation by encapsulating the enzymes ribulose bisphosphate carboxylase/ oxygenase (RuBisCO) and carbonic anhydrase. The outer shell of the carboxysome is reminiscent of a viral capsid, being constructed from many copies of a few small proteins. Here we describe the structure of the shell protein CsoS1A from the chemoautotrophic bacterium Halothiobacillus neapolitanus. The CsoS1A protein forms hexameric units that pack tightly together to form a molecular layer, which is perforated by narrow pores. Sulfate ions, soaked into crystals of CsoS1A, are observed in the pores of the …

Responding In The Homeland: A Snapshot Of Nato’S Readiness For Cbrn Attacks, Michael Moodie, Robert E. Armstrong, Tyler Merkeley

Defense Horizons

The possibility of North Atlantic Treaty Organization (NATO) members having to respond to a chemical, biological, radiological, or nuclear (CBRN) incident is not a hypothetical scenario reserved for training exercises. Indeed, a number of countries worldwide have considerable experience in dealing with a variety of naturally occurring, accidental, and deliberate CBRN incidents. NATO itself, however, has no clear conceptual vision of its role in civil emergencies because preparedness of this sort remains a national responsibility.

For many years, NATO’s military forces have addressed CBRN issues as part of their military planning. But the question remains as to how NATO nations …

Reconstruction Of Diabetic Foot Ulcers By Lateral Supramalleolar Flap, Huseyin S. Yercan, Tackin Ozalp, Guvenir Okcu

Saudi Medical Journal

OBJECTIVE: To report a series of 8 diabetic patients in whom the reconstruction of large-sized defect of the foot was performed using lateral supramalleolar flap. METHODS: Coverage of the soft tissue defect was carried out by a lateral supramalleolar flap in 8 patients who had large-sized, non-healing ulcers at the Celal Bayar University, Department of Orthopedics and Traumatology, Manisa, Turkey, between 1998-2003. The mean age was 54 years. Preoperatively Doppler flowmeter evaluation was performed, and the ischemic index was calculated in all patients. RESULTS: The flaps survived except for one patient who had a large defect on the heel with …

The Effects Of Testosterone On The Induction Of Experimental Autoimmune Thyroiditis In Sprague-Dawley Rats, Travis William Reed

Theses, Dissertations and Culminating Projects

Experimental Autoimmune Thyroiditis (EAT) could not be induced in young, immature Sprague-Dawley rats (150-200g). EAT was successfully induced in the same group of animals when they weighed 400g. The animals developed the disease every time. Sexual immaturity or immaturity of the immune system may be responsible for these results (Fernandez, 2006). It has been proven that pharmacologic doses of testosterone have shown immunosuppressive effects on the severity of EAT in the PVG/c strain of rats (Ahmed et al, 1982). In this current thesis research, it appears that normal physiologic levels of testosterone have no effect on the development and severity …

The Global Hepatic Transcriptional Response Of Male Fisher Rats To Dietary Aroclor 1254 Exposure, Trisha M. Basford

Dissertations

Dietary intake is a primary route for biomagnification of environmentally persistent polychlorinated biphenyls (PCBs) within humans and animals. Aroclor 1254, a mixture of PCBs, is associated with a variety of toxic responses including alterations in blood and lipid biochemistry and tumor promotion. Measurement of the transcriptional responses to low-level dietary exposure to A1254 has not been reported to date, and is important given the persistence of PCBs, and range of effects associated with exposure. The aims of this study were to characterize changes in rat hepatic global gene expression due to sub-acute and sub-chronic dietary exposure to A1254, and to …

Characterization Of Molecular Events Following Heavy Metal Cadmium Exposure: A Cellular Regulatory Symphony In Response To Early Cadmium Insult, Chin-Ju Jean Hsiao

Dissertations

Cadmium, a non-essential toxic heavy metal, has been classified as a human carcinogen and one of the most hazardous substances in our environment. Since it can circulate within the food chain, has a long biological half-life and can bio-accumulate, it has the potential to induce detrimental health effects linked to toxicity, cancer and chronic diseases.

In recent years progress has been made to dissect and understand the molecular mechanisms underlying the effects of cadmium exposure. However, few studies have focused on investigating potential protective and/or defense mechanisms naturally applied by cells upon initial exposure, prior to any damage or toxic …

Inelastic X-Ray Scattering Studies On Organic Semiconductors And Organic Superconductors, Chaminda Nalaka Kodituwakku

Dissertations

We have measured electronic excitations and excitons in CuPc polycrystalline and single crystal samples. Measurements on the polycrystalline sample were done with 300 meV resolution and measurements on the single crystal were done using 120 meV resolution. Time dependant density functional theory (TD-DFT) calculations were done on the CuPc molecule to understand the electronic excitations in this system.

Struggling With Race: A Grounded Theory Study Of The Developing Of Awareness Of Racism, Shawn Victoria Macdonald

Dissertations

White counselors and psychologists need to have a strong understanding of racism and white privilege for effective therapeutic work with people of color. However, many white counselors struggle in various ways with multicultural training. The phenomenon of white counselors in training struggling with awareness of racism and white privilege is well-recognized but not fully understood.

A constructivist grounded theory study was conducted to explore the phenomena of "struggle" among white counselors in training who were engaged in multicultural training. 33 interviews were conducted with 17 participants who were students in master's and doctoral level counseling, counseling psychology, and related programs. …

Structure-Function Studies Of Self- Assembling Flagellin Proteins Fromsalmonella Typhimurium And Aquifex Pyrophilus, Venkata Raghu Ram Malapaka

Dissertations

The eubacterial flagellum is a complex structure with an elongated extracellular filament that is primarily composed of a single protein termed flagellin. The highly conserved N-and C- termini of flagellin are important in its export and assembly, whereas the middle "hypervariable" region is highly variable in size across different species and is largely dispensable. InSalmonella typhimurium phase 1 flagellin (FliC), this hypervariable region encodes two solvent-exposed D2 and D3 domains. The functional role of this knob-like structural feature in motility remains unclear. The structural and physiological role of the hypervariable region in flagellar assembly, stability and cellular motility was investigated. …

Development Of Cursor-On-Target Control For Semi-Autonomous Unmanned Aircraft Systems, Joshua D. Crouse

Theses and Dissertations

The research presented in this thesis focuses on developing, demonstrating, and evaluating the concept of a Cursor-on-Target control system for semi-autonomous unmanned aircraft systems. The Department of Defense has mapped out a strategy in which unmanned aircraft systems will increasingly replace piloted aircraft. During most phases of flight autonomous unmanned aircraft control reduces operator workload, however, real-time information exchange often requires an operator to relay decision changes to the unmanned aircraft. The goal of this research is to develop a preliminary Cursor-on-Target control system to enable the operator to guide the unmanned aircraft with minimal workload during high task phases …

Aerobic Biodegradation Of Fuel Oxygenates, Adam M. Gutshall

Theses and Dissertations

Methyl tert-Butyl Ether (MTBE) is the most commonly used fuel oxygenate in the world. Its recalcitrant nature as well as its chemical properties have led to widespread groundwater contamination. Questions regarding its toxicity have spurred a search for viable oxygenate alternatives. Since biodegradability is a key indicator of a chemical’s environmental impact, this research used three different well-known methods, BOD₅, respirometry, and GC analysis, to examine the extent and rates of aerobic biodegradation of MTBE along with tert-butyl alcohol (TBA). The common fuel component toluene was added to some of the samples to determine if the presence of …

Preferential Myosin Heavy Chain Isoform B Expression May Contribute To The Faster Velocity Of Contraction In Veins Versus Arteries, Catherine M. Rondelli, Irina T. Szasz, Anas Kayal, Keshari Thakali, Ralph E. Watson, Arthur S. Rovner, Thomas J. Eddinger, Gregory D. Fink, Stephanie W. Watts

Biological Sciences Faculty Research and Publications

Smooth muscle myosin heavy chains occur in 2 isoforms, SMA (slow) and SMB (fast). We hypothesized that the SMB isoform is predominant in the faster-contracting rat vena cava compared to thoracic aorta. We compared the time to half maximal contraction in response to a maximal concentration of endothelin-1 (ET-1; 100 nM), potassium chloride (KCl; 100 mM) and norepinephrine (NE; 10 µM). The time to half maximal contraction was shorter in the vena cava compared to aorta (aorta: ET-1 = 235.8 ± 13.8 s, KCl = 140.0 ± 33.3 s, NE = 19.8 ± 2.7 s; vena cava: ET-1 = 121.8 …

Systems Metaphysics: A Bridge From Science To Religion, Martin Zwick

Complex Systems Faculty Publications and Presentations

'Systems theory' is familiar to many as the scientific enterprise that includes the study of chaos, networks, and complex adaptive systems. It is less widely appreciated that the systems research program offers a world view that transcends the individual scientific disciplines. We do not live, as some argue, in a post-metaphysical age, but rather at a time when a new metaphysics is being constructed. This metaphysics is scientific and derives from graph theory, information theory, non-linear dynamics, decision theory, game theory, generalized evolution, and other transdisciplinary theories. These 'systems' theories focus on form and process, independent of materiality; they are …

Systems Metaphysics: A Bridge From Science To Religion [Presentation], Martin Zwick

Complex Systems Faculty Publications and Presentations

'Systems theory' is familiar to many as the scientific enterprise that includes the study of chaos, networks, and complex adaptive systems. It is less widely appreciated that the systems research program offers a world view that transcends the individual scientific disciplines. We do not live, as some argue, in a post-metaphysical age, but rather at a time when a new metaphysics is being constructed. This metaphysics is scientific and derives from graph theory, information theory, non-linear dynamics, decision theory, game theory, generalized evolution, and other transdisciplinary theories. These 'systems' theories focus on form and process, independent of materiality; they are …

A Theoretical Model For Blood Flow In Small Vessels, V. P. Srivastava

Applications and Applied Mathematics: An International Journal (AAM)

A two-fluid model consisting of a core region of suspension of all the erythrocytes (particles) in plasma (fluid) assumed to be a particle-fluid mixture and a peripheral layer of cell-free plasma (Newtonian fluid), has been proposed to represent blood flow in small diameter tubes. The analytical results obtained in the proposed model for effective viscosity, velocity profiles and flow rate have been evaluated numerically for various values of the parameters available from published works. Quantitative comparison has shown that present model suitability represents blood flow at hematocrit (less than or equal to 40%) and in vessels up to 70 micrometers …

Color Image Identification Based On 2-D Power Spectrum Based On Neural Network, Hassan J.

Iraqi Journal of Computers, Communications, Control and Systems Engineering

Image identification plays a great role in industrial, remote sensing, and military applications. It is concerned with the generation of a signature to the image. This work proposes a dynamic program (use Neural Network) to identify the color image depending on the distribution of the monochrome colors (red, green, and blue) in the same image to make image signature accordingly, which is represented by a values named power spectrum. The first step is to analyze the three-band monochrome image (color image) to Red, Green and Blue image, then deal with each image as a grey scale one which is represented …

(Post)Colonising Disability, Mark Sherry

Wagadu: A Journal of Transnational Women's & Gender Studies

Disability and postcolonialism are two important, and inter-related, discourses in the social construction of the nation and those bodies deemed worthy of citizenship rights. This paper acknowledges the material dimensions of disability, impairment -and postcolonialism and its associated inequalities – but it also highlights the rhetorical connections which are commonly made between elements of postcolonialism (exile, diaspora, apartheid, slavery, and so on) and experiences of disability (deafness, psychiatric illness, blindness, etc.) The paper suggests that researchers need to be far more careful in their language around experiences of both disability and postcolonialism. Neither disability nor postcolonialism should be understood as …

Gender Equality In High School Sports: Why There Is A Contact Sport Exemption To Title Ix, Eliminating It, And A Proposal For The Future., Blake J. Furman

Fordham Intellectual Property, Media and Entertainment Law Journal

No abstract provided.

The Pharmacokinetics Of Taurolidine Metabolites In Healthy Volunteers., Li Gong, Howard E Greenberg, James L Perhach, Scott A Waldman, Walter K. Kraft

Department of Pharmacology and Experimental Therapeutics Faculty Papers

Taurolidine is an experimental antibacterial and antiendotoxic compound whose clinical utility as an antitumor agent is being investigated in human clinical trials. Taurolidine in aqueous solution exists in equilibrium with taurultam. Taurultam is subsequently transformed to taurinamide. The pharmacokinetic profiles of these metabolites are not well established. In this study, 18 healthy volunteers were administered 5.0 g of taurolidine in 250 mL of 5% polyvinylpyrrolidone in water over 2, 1, or 0.5 hours by intravenous infusion in a parallel-group design. All subjects noted discomfort at the infusion site, although there were no serious adverse events. t(max) generally occurred at the …

An Age-Structured Resource-Consumer Dynamical Model, Jean M. Tchuenche

Applications and Applied Mathematics: An International Journal (AAM)

Many dynamical systems in population biology in which agents compete for resources may exhibit chaotic fluctuations. This short letter develops Gamarra and Solé's previous work. We briefly review a classical model of population with complex dynamics, and proceed to study the dynamics of an age-structured resource-consumer model, in which the fertility coefficients are density independent. Implicit or first integral solutions of the model are obtained, and conditions for which they are stable given. It is observed that resource availability at any time depends on the number of potential consumers present.

Emotional Stroop Effects: Eating Disorders And Obesity, Kristy Anne Kuehfuss

Loma Linda University Electronic Theses, Dissertations & Projects

This study addresses the effects of emotional valence on selective processing of body-shape related words in young women who suffer from anorexia, bulimia, or obesity, and non-clinical controls. Research in the area of emotional Stroop interference has indicated that persons with eating disorders, particularly anorectics, show elevated latencies in naming colors of words related to food or body-shape, in contrast to either neutral words, or to non-clinical control groups. One intriguing issue regarding the emotional Stroop interference among various clinical populations relates to the question of whether the interference is due to the emotionality of the relevant words or to …

The Hand That Rocks The Cradle: Maternal Gatekeeping After Divorce, Marsha Kline Pruett, Lauren A. Arthur, Rachel Ebling

Pace Law Review

No abstract provided.

Client-Directed Lawyers For Children: It Is The Right Thing To Do?, Linda D. Elrod

Pace Law Review

No abstract provided.

Kramer Vs. Kramer Revisited: A Comment On The Miller Commission Report And The Obligation Of Divorce Lawyers For Parents To Discuss Alternative Dispute Resolution With Their Clients, Andrew Schepard

Pace Law Review

No abstract provided.

Status And Distribution Of Manatees In Honduras And The Use Of Side-Scan Sonar, Daniel Gonzalez-Socoloske

Loma Linda University Electronic Theses, Dissertations & Projects

All manatee species are listed as endangered or vulnerable. Studying these animals is very challenging because of their reticent behavior and the remote and complex habitats in which they are found. This study dealt with three challenges in manatee conservation: identification of hotspots, manatee detection in turbid and tannin-stained waters, and regional collaboration between countries. Using the West Indian Manatee (Trichechus manatus) as the study subject, these three challenges were examined and possible solutions were presented.

The distribution of manatees in Honduras is known from sporadic death reports and informal interviews. Like many other countries in Mesoamerica, Honduras had …

Electromagnetic Differences In The Brain During Memory Retrieval, Warren Scott Merrifield

Loma Linda University Electronic Theses, Dissertations & Projects

The primary objectives for this experiment were to analyze the neuroanatomical correlates of autobiographical, episodic and semantic memory, use a different paradigm to promote episodic memory retrieval, and employ a different analysis technique to understand retrieval processes. Autobiographical and episodic memories are personal memories from the past. Autobiographical is more general (e.g. a street name of a house growing up) and episodic is more specific to time (e.g. 13th birthday party that took place on a street). For autobiographical and episodic memory retrieval operations, there is no general consensus as to the localization of function, but bilateral activation of the …

Gordie News, June 2007, West Chester University Of Pennsylvania

Gordon Natural Area History & Strategic Plan Documents

No abstract provided.

Organic Mangoes A Production Guide, Steven Mccoy

Bulletins 4000 -

Mangoes have been identified as a prospective crop for conversion to organic production, particularly at Kununurra in the Ord River Irrigation Area.

Mangoes can also perform well under organic systems in other regions of WA, however variations in pest and disease pressures may require additional attention to these problems.

Concave Pit-Containing Scaffold Surfaces Improve Stem Cell-Derived Osteoblast Performance And Lead To Significant Bone Tissue Formation., Antonio Graziano, Riccardo D'Aquino, Maria Gabriella Cusella-De Angelis, Gregorio Laino, Adriano Piattelli, Maurizio Pacifici, Alfredo De Rosa, Gianpaolo Papaccio

Department of Orthopaedic Surgery Faculty Papers

BACKGROUND: Scaffold surface features are thought to be important regulators of stem cell performance and endurance in tissue engineering applications, but details about these fundamental aspects of stem cell biology remain largely unclear.

METHODOLOGY AND FINDINGS: In the present study, smooth clinical-grade lactide-coglyolic acid 85:15 (PLGA) scaffolds were carved as membranes and treated with NMP (N-metil-pyrrolidone) to create controlled subtractive pits or microcavities. Scanning electron and confocal microscopy revealed that the NMP-treated membranes contained: (i) large microcavities of 80-120 microm in diameter and 40-100 microm in depth, which we termed primary; and (ii) smaller microcavities of 10-20 microm in diameter …