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Articles 3211 - 3240 of 6163
Full-Text Articles in Entire DC Network
College Of Health Sciences Newsletter, March 2013, College Of Health Sciences
College Of Health Sciences Newsletter, March 2013, College Of Health Sciences
Ellmer College of Health Sciences Newsletters
March 2013 issue of Old Dominion University's College of Health Sciences Newsletter.
Uncoupling Between Dinitrogen Fixation And Primary Productivity In The Eastern Mediterranean Sea, Eyal Rahav, Barak Herut, Noga Stambler, Edo Bar-Zeev, Margaret R. Mulholland
Uncoupling Between Dinitrogen Fixation And Primary Productivity In The Eastern Mediterranean Sea, Eyal Rahav, Barak Herut, Noga Stambler, Edo Bar-Zeev, Margaret R. Mulholland
OES Faculty Publications
In the nitrogen (N)-impoverished photic zones of many oceanic regions, prokaryotic organisms fixing atmospheric dinitrogen (N2; diazotrophs) supply an essential source of new nitrogen and fuel primary production. We measured dinitrogen fixation and primary productivity (PP) during the thermally stratified summer period in different water regimes of the oligotrophic eastern Mediterranean Sea, including the Cyprus Eddy and the Rhodes Gyre. Low N2 fixation rates were measured (0.8-3.2μmol N m-2 d-1) excluding 10-fold higher rates in the Rhodes Gyre and Cyprus Eddy (~20μmol N m-2 d-1). The corresponding PP increased from east to west (200-2500μmol …
Undergraduate Research In Biology: Field Studies, Eric Walters
Undergraduate Research In Biology: Field Studies, Eric Walters
Undergraduate Research Symposium
Chair: Eric Walters, Department of Biological Sciences
Undergraduate Research In Biology: Ticks, Holly Gaff
Undergraduate Research In Biology: Ticks, Holly Gaff
Undergraduate Research Symposium
Chair: Dr. Holly Gaff, Department of Biological Sciences
Undergraduate Research In Biology: Aquatic, David Gauthier
Undergraduate Research In Biology: Aquatic, David Gauthier
Undergraduate Research Symposium
Chair: Dr. David Gauthier, Department of Biological Sciences
The History Of Medicine: Benefits Derived From Exploring The Sciences Through The Lens Of The Humanities, Annette Finley-Croswhite
The History Of Medicine: Benefits Derived From Exploring The Sciences Through The Lens Of The Humanities, Annette Finley-Croswhite
Undergraduate Research Symposium
Chair: Dr. Annette Finley-Croswhite, Department of History
Graduate News, Office Of Graduate Studies, Old Dominion University
Graduate News, Office Of Graduate Studies, Old Dominion University
Graduate News
February 2013 issue of Graduate News from the Office of Graduate Studies (now, ODU Graduate School).
Design, Development And Evaluation Of An Interactive Virtual Haptics-Augmented Training System For Undergraduate Engineering, Robert L. Williams Ii, Ernur Karadogan, David R. Moore, Tian Luo
Design, Development And Evaluation Of An Interactive Virtual Haptics-Augmented Training System For Undergraduate Engineering, Robert L. Williams Ii, Ernur Karadogan, David R. Moore, Tian Luo
STEMPS Faculty Publications
No abstract provided.
Table Of Contents
Virginia Journal of Science
Table of Contents for Virginia Journal of Science, vol. 64, no. 1 & 2, Spring/Summer 2013
An Empirical Muscle Intracellular Action Potential Model With Multiple Erlang Probability Density Functions Based On A Modified Newton Method, Gyutae Kim, Mohammed M. Ferdjallah, Frederic D. Mckenzie
An Empirical Muscle Intracellular Action Potential Model With Multiple Erlang Probability Density Functions Based On A Modified Newton Method, Gyutae Kim, Mohammed M. Ferdjallah, Frederic D. Mckenzie
Computational Modeling & Simulation Engineering Faculty Publications
The convolution of the transmembrane current of an excitable cell and a weighting function generates a single fiber action potential (SFAP) model by using the volume conductor theory. Here, we propose an empirical muscle IAP model with multiple Erlang probability density functions (PDFs) based on a modified Newton method. In addition, we generate SFAPs based on our IAP model and referent sources, and use the peak-to-peak ratios (PPRs) of SFAPs for model verification. Through this verification, we find that the relation between an IAP profile and the PPR of its SFAP is consistent with some previous studies, and our IAP …
Editor And Journal Information
Editor And Journal Information
Virginia Journal of Science
Editor and journal information for Virginia Journal of Science, vol. 64, no. 1 & 2, Spring/Summer 2013
Dorothy Crandall Bliss
Virginia Journal of Science
Obituary for Dorothy Crandall Bliss
2013 Undergraduate Research Awards
2013 Undergraduate Research Awards
Virginia Journal of Science
Information about the 2013 Undergraduate Research award-winners. Includes photos.
Phytoplankton In Virginia Lakes And Reservoirs, Harold G. Marshall
Phytoplankton In Virginia Lakes And Reservoirs, Harold G. Marshall
Virginia Journal of Science
This study involves a phytoplankton summer/autumn survey in 46 Virginia lakes and reservoirs during 2010-2012. A total of 307 taxa were identified which included several filamentous and colonial cyanabacteria in bloom concentrations. With the exception of one natural lake, the other sites sampled represent impoundments created decades ago, with the majority presently classified as meso- or eutrophic. Among the cyanobacteria were 6 known toxin producers (Anabaena circinalis, Anabaena spiroides, Aphanizomenon flos-aquae, Cylindrospermopsis raciborskii, Limnothrix redekei, and Microcystis aeruginosa). The study characterizes phytoplankton populations in these aging freshwater habitats taken from a large number …
Influence Of Exposure To Benzo[A]Pyrene On Mice Testicular Germ Cells During Spermatogenesis, Hueiwang Anna Jeng, Silvina M. Bocca
Influence Of Exposure To Benzo[A]Pyrene On Mice Testicular Germ Cells During Spermatogenesis, Hueiwang Anna Jeng, Silvina M. Bocca
Community & Environmental Health Faculty Publications
The objective of this study was to assess the toxicological effect of exposure to benzo(a)pyrene, B[a]P, on germ cells during spermatogenesis. Mice were exposed to B[a]P at 1, 10, 50, and 100 mg/kg/day for 30 days via oral ingestion. Germ cells, including spermatogonia, spermatocytes, pachytene spermatocytes, and round spermatids, were recovered from testes of mice exposed to B[a]P, while mature spermatozoa were isolated from vas deferens. Reproductive organs were collected and weighed. Apoptotic response of germ cells and mature spermatozoa were qualified using the terminal deoxynucleotidyl transferase mediated deoxy-UTP nick end labeling (TUNEL) assay. B[a]P exposure at
College Of Health Sciences Newsletter, January 2013, College Of Health Sciences
College Of Health Sciences Newsletter, January 2013, College Of Health Sciences
Ellmer College of Health Sciences Newsletters
January 2013 issue of Old Dominion University's College of Health Sciences Newsletter.
2013 Fellows Of The Academy: Werner Wieland, Ph.D.
2013 Fellows Of The Academy: Werner Wieland, Ph.D.
Virginia Journal of Science
Werner Wieland, Ph.D. elected as Fellow of the Virginia Academy of Science, 2013
Old Dominion University Climate Change And Sea Level Rise Initiative, Winter 2013, Larry P. Atkinson (Editor)
Old Dominion University Climate Change And Sea Level Rise Initiative, Winter 2013, Larry P. Atkinson (Editor)
CCSLRI Newsletters
Winter 2013 Newsletter of the Old Dominion University Climate Change and Sea Level Rise Initiative
Part 6: Virtual Education At The K-12 Level In Hampton Roads, Regional Studies Institute, Old Dominion University
Part 6: Virtual Education At The K-12 Level In Hampton Roads, Regional Studies Institute, Old Dominion University
State of the Region Reports: Hampton Roads
Online education in our region is growing rapidly in a laissez-faire manner that exhibits little accountability.
2013 Fellows Of The Academy: Michael H. Renfroe, Ph.D.
2013 Fellows Of The Academy: Michael H. Renfroe, Ph.D.
Virginia Journal of Science
Michael H. Renfroe, Ph.D. elected as Fellow of the Virginia Academy of Science for 2013.
Next-Peak: A Normal-Exponential Two-Peak Model For Peak-Calling In Chip-Seq Data, Nak-Kyeong Kim, Rasika V. Jayatillake, John L. Spouge
Next-Peak: A Normal-Exponential Two-Peak Model For Peak-Calling In Chip-Seq Data, Nak-Kyeong Kim, Rasika V. Jayatillake, John L. Spouge
Mathematics & Statistics Faculty Publications
Background: Chromatin immunoprecipitation followed by high-throughput sequencing (ChIP-seq) can locate transcription factor binding sites on genomic scale. Although many models and programs are available to call peaks, none has dominated its competition in comparison studies.
Results: We propose a rigorous statistical model, the normal-exponential two-peak (NEXT-peak) model, which parallels the physical processes generating the empirical data, and which can naturally incorporate mappability information. The model therefore estimates total strength of binding (even if some binding locations do not map uniquely into a reference genome, effectively censoring them); it also assigns an error to an estimated binding location. The comparison study …
Phylogeography Of The Christmas Tree Worm Spirobranchus Corniculatus (Annelida, Serpulidae) From The Coral Triangle, Australia, And Fiji, Abril Iñiguez, Craig J. Starger, Elena Kupriyanova, Demian Willette, Tristan Varman, Joshua A. Drew, Abdul Hamid Toha, Benedict Maralit, Kent E. Carpenter, Paul H. Barber
Phylogeography Of The Christmas Tree Worm Spirobranchus Corniculatus (Annelida, Serpulidae) From The Coral Triangle, Australia, And Fiji, Abril Iñiguez, Craig J. Starger, Elena Kupriyanova, Demian Willette, Tristan Varman, Joshua A. Drew, Abdul Hamid Toha, Benedict Maralit, Kent E. Carpenter, Paul H. Barber
Biological Sciences Faculty Publications
Christmas Tree Woms is a common name given to a group of large and colourful serpulid polychaetes of the genus Spirobranchus that are obligate symbionts of hermatypic corals commonly found in tropical and subtropical regions world-wide. While current taxonomic species delimitations of these worms are based almost exclusively on the morphology of opercular structures, particularly the number and shape of calcareous opercular horns, high levels of intraspecific variation in this morphological feature have made species boundaries within the genus difficult to resolve. Molecular work to differentiate serpulid worms has long been hampered by the availability of informative markers. Recent work …
Comparing Responsiveness Of Six Common Patient-Reported Outcomes To Changes Following Autologous Chondrocyte Implantation: A Systematic Review And Meta-Analysis Of Prospective Studies, Jennifer S. Howard, Christian Lattermann, Johanna M. Hoch, Carl G. Mattacola, Jennifer M. Medina Mckeon
Comparing Responsiveness Of Six Common Patient-Reported Outcomes To Changes Following Autologous Chondrocyte Implantation: A Systematic Review And Meta-Analysis Of Prospective Studies, Jennifer S. Howard, Christian Lattermann, Johanna M. Hoch, Carl G. Mattacola, Jennifer M. Medina Mckeon
Rehabilitation Sciences Faculty Publications
Objective: To compare the responsiveness of six common patient-reported outcomes (PROs) following autologous chondrocyte implantation (ACI). Design: A systematic search was conducted to identify reports of PROs following ACI. Study quality was evaluated using the modified Coleman Methodology Score (mCMS). For each outcome score, pre- to postoperative paired Hedge's g effect sizes were calculated with 95% confidence intervals (CIs). Random effects meta-analyses were performed to provide a summary response for each PRO at time points (TP) I (<1 year), II (1 year to <2 years), III (2 years to <4 years), IV (>= 4 years), and overall. Results: The mean mCMS for the 42 articles included was 50.9 +/- 9.2. For all evaluated instruments, …
First Record Of Pond Sliders (Trachemys Scripta Scripta And T. S. Elegans) At Fredericksburg, Virginia With Observations On Population Size, Age And Growth, Werner Wieland, Yoshinori Takeda
First Record Of Pond Sliders (Trachemys Scripta Scripta And T. S. Elegans) At Fredericksburg, Virginia With Observations On Population Size, Age And Growth, Werner Wieland, Yoshinori Takeda
Virginia Journal of Science
We conducted a turtle mark-recapture program within a 160 m stretch of the Fredericksburg Canal with standard, baited hoop nets from May to July 2012 to determine if a population of the introduced Red-eared Slider (Trachemys scripta elegans) and Yellow-bellied Slider (Trachemys s. scripta) are established in this area. We captured and marked nine Red-eared Sliders (1 male, 8 females) and estimated a population size of 23 individuals. Most were reproductively mature. The established population in the canal may be a source of introduction into the Rappahannock River.
Systematic Ichthyofaunal Surveys In Urban And Non-Urban Watersheds, Eugene G. Maurakis, David V. Grimes, Amanda Schutt, Suzy Short
Systematic Ichthyofaunal Surveys In Urban And Non-Urban Watersheds, Eugene G. Maurakis, David V. Grimes, Amanda Schutt, Suzy Short
Virginia Journal of Science
Objectives were to model fish species richness relative to natural and anthropogenic variables in Quantico Creek, a forested undisturbed stream environment, and Cameron Run, a highly disturbed urban stream environment in the lower Piedmont-Fall Line region of the Potomac River watershed. Species richness in all stream orders (e.g. avg. range=2.5-9.65 in 1st-3rd orders) of Quantico Creek were significantly higher than those (e.g. avg. range=2.1- 7.6 in 1st -4th orders) of Cameron Run. Fish species richness in Quantico Creek watershed can be modeled by eight factors: season, stream order, elevation, river km, stream width and depth, watershed size, and percent of …
Editor And Journal Information
Editor And Journal Information
Virginia Journal of Science
Initial page with Editor and journal information.
Nanosecond Pulsed Electric Field (Nspef) Ablation As An Alternative Or Adjunct To Surgery For Treatment Of Cancer, Ru Chen, Xinhua Chen, Stephen J. Beebe
Nanosecond Pulsed Electric Field (Nspef) Ablation As An Alternative Or Adjunct To Surgery For Treatment Of Cancer, Ru Chen, Xinhua Chen, Stephen J. Beebe
Bioelectrics Publications
Surgery as resection or transplantation remains a fundamental means for cancer treatment and often offers an opportunity for a cure. However, surgery is not always possible because of tumor proximity to blood vessels or ducts or when a patient is not healthy enough to undergo surgery. Application of nanosecond pulsed electric fields (nsPEFs) is a new approach to treat cancer using pulse power technology that was originally designed for military purposes. This novel approach deposits extremely short pulses of high power, low energy electric fields into malignant tissues using electrodes to encompass tumors. Pre-clinical studies show that treatments are effective …
Induction Of Cell Death Mechanisms And Apoptosis By Nanosecond Pulsed Electric Fields (Nspefs), Stephen J. Beebe, Nova M. Sain, Wei Ren
Induction Of Cell Death Mechanisms And Apoptosis By Nanosecond Pulsed Electric Fields (Nspefs), Stephen J. Beebe, Nova M. Sain, Wei Ren
Bioelectrics Publications
Pulse power technology using nanosecond pulsed electric fields (nsPEFs) offers a new stimulus to modulate cell functions or induce cell death for cancer cell ablation. New data and a literature review demonstrate fundamental and basic cellular mechanisms when nsPEFs interact with cellular targets. NsPEFs supra-electroporate cells creating large numbers of nanopores in all cell membranes. While nsPEFs have multiple cellular targets, these studies show that nsPEF-induced dissipation of DeltaPsim closely parallels deterioration in cell viability. Increases in intracellular Ca2+ alone were not sufficient for cell death; however, cell death depended of the presence of Ca2+. When both events occur, cell …
Atomic Force Microscopy Characterization Of Collagen ‘Nanostraws’ In Human Costal Cartilage, Michael W. Stacey, Diganta Dutta, Anthony Asmar, H. Elsayed-Ali, R. Kelly Jr., A. Beskok
Atomic Force Microscopy Characterization Of Collagen ‘Nanostraws’ In Human Costal Cartilage, Michael W. Stacey, Diganta Dutta, Anthony Asmar, H. Elsayed-Ali, R. Kelly Jr., A. Beskok
Bioelectrics Publications
Costal cartilage, a type of hyaline cartilage that bridges the bony ribs and sternum, is relatively understudied compared to the load bearing cartilages. Deformities of costal cartilage can result in deformation of the chest wall, where the sternum is largely pushed toward or away from the spine, pectus excavatum and pectus carinatum, respectively, with each condition having significant clinical impact. In the absence of extensive literature describing morphological features of costal cartilage, we characterized a sample from the costal margin immunohistologically and through atomic force microscopy. We had previously observed the presence of collagen ‘nanostraws’ running the length of costal …
Impulsivity Like Traits And Risky Driving Behaviors Among College Students, Matthew R. Pearson, Elaine M. Murphy, Ashley N. Doane
Impulsivity Like Traits And Risky Driving Behaviors Among College Students, Matthew R. Pearson, Elaine M. Murphy, Ashley N. Doane
Psychology Faculty Publications
The present study examined the predictive effects of five impulsivity-like traits (Premeditation, Perseverance, Sensation Seeking, Negative Urgency, and Positive Urgency) on driving outcomes (driving errors, driving lapses, driving violations, cell phone driving, traffic citations, and traffic collisions). With a convenience sample of 266 college student drivers, we found that each of the impulsivity-like traits was related to multiple risky driving outcomes. Positive Urgency (tendency to act impulsively when experiencing negative affect) was the most robust predictor of risky driving outcomes. Positive Urgency is a relatively newly conceptualized impulsivity-like trait that was not examined in the driving literature previously, suggesting a …