Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

2010

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 6181 - 6210 of 18896

Full-Text Articles in Entire DC Network

Behavioural Display Systems Across Nine Anolis Lizard Species: Sexual Dimorphisms In Structure And Function, Michele A. Johnson, J. Wade Jun 2010

Behavioural Display Systems Across Nine Anolis Lizard Species: Sexual Dimorphisms In Structure And Function, Michele A. Johnson, J. Wade

Biology Faculty Research

Relationships between structure and function are a primary focus in biology, yet they are most often considered within individual species. Sexually dimorphic communication behaviours and the morphology of associated structures can vary widely, even among closely related species, and these traits provide an ideal opportunity to investigate the evolution of structure-function patterns. Using nine Anolis lizard species, we addressed a series of questions regarding sex differences in and the evolution of relationships between extension of the throat fan (dewlap) and morphology of the muscles and cartilage controlling it. The main results indicated that within species, males displayed the dewlap more …

Go to article

Pacific Review Summer 2010, Alumni Association Of The University Of The Pacific Jun 2010

Pacific Review Summer 2010, Alumni Association Of The University Of The Pacific

Pacific Magazine and Pacific Review

No abstract provided.

Go to article

The Significance Of The Male Display During Male-Male Interactions In Guppies (Poecilia Reticulata), Rebecca Nuffer, Samantha M. Alburn Jun 2010

The Significance Of The Male Display During Male-Male Interactions In Guppies (Poecilia Reticulata), Rebecca Nuffer, Samantha M. Alburn

Biological Sciences

Guppies, Poecilia reticulata, are a model species for studies of female preference based on male courtship displays; however, males also display to each other in an aggressive context, and little attention has been paid to the role of male-male displays. The display involves a male positioning his body in front or to the side of another male, arching his body, and quivering with his dorsal fin splayed. To understand what behaviors elicit a male display, we assigned individual males a dominance status. We then examined the relationship between dominance status and the number of displays delivered and received. By …

Go to article

An Examination Of Caregiving Dyads: Community Dwelling Chronically Ill Older Adults And Their Caregivers, Jessica E. Haxton Jun 2010

An Examination Of Caregiving Dyads: Community Dwelling Chronically Ill Older Adults And Their Caregivers, Jessica E. Haxton

Electronic Theses and Dissertations

Increases in life expectancy among older adults raise important concerns about the availability of resources for an aging population living with chronic and debilitating illnesses. Living longer is complicated by the fact that many elders prefer to reside in their homes until medical or other conditions require an alternative living arrangement. The strong desire to remain at home expressed by older persons in the United States has in turn created an increased demand on informal caregiving. Consequently, adult children often bear the burden of providing care to their aging parents. In view of this demand it is critical that research …

Go to article

Actions To Implement And Complement The National System For The Prevention And Management Of Introduced Marine Pests In Western Australia, Fred E. Wells, Justin I. Mcdonald Jun 2010

Actions To Implement And Complement The National System For The Prevention And Management Of Introduced Marine Pests In Western Australia, Fred E. Wells, Justin I. Mcdonald

Fisheries Research Reports

Introduced marine pests are regarded as one of the critical environmental issues worldwide which can damage the marine environment, including that of Western Australia. Most introduced species cause no apparent harm. A small minority of introduced species become pests, but these few can cause substantial economic and ecological damage.

Go to article

June 1st 2010, Csusb Jun 2010

June 1st 2010, Csusb

Coyote Chronicle (1984-)

No abstract provided.

Go to article

Body Size And Social Dominance Influence Breeding Dispersal In Male Pachydiplax Longipennis (Odonata), Shannon Mccauley Jun 2010

Body Size And Social Dominance Influence Breeding Dispersal In Male Pachydiplax Longipennis (Odonata), Shannon Mccauley

Biological Sciences

1. Dispersal behaviour can be affected by an individual's phenotype, by the environmental or social context they experience, and by interactions between these factors. Differential dispersal propensities between individuals may also be an important modifier of functional connectivity between populations. To assess how a key trait, body size, affected both social interactions and dispersal behaviour, this study examined the relationship between body size, antagonistic interactions, and breeding dispersal in male dragonflies (Pachydiplax longipennis) across a seasonal decline in adult body size. 2. During a seasonal peak in male body size in this study, dispersers were smaller than non-dispersers. Later in …

Go to article

North American Montane Red Foxes: Expansion, Fragmentation, And The Origin Of The Sacramento Valley Red Fox, Benjamin N. Sacks, Mark J. Statham, John D. Perrine, Samantha M. Wisely, Keith B. Aubry Jun 2010

North American Montane Red Foxes: Expansion, Fragmentation, And The Origin Of The Sacramento Valley Red Fox, Benjamin N. Sacks, Mark J. Statham, John D. Perrine, Samantha M. Wisely, Keith B. Aubry

Biological Sciences

Most native red foxes (Vulpes vulpes) in the western contiguous United States appear to be climatically restricted to colder regions in the major mountain ranges and, in some areas, have suffered precipitous declines in abundance that may be linked to warming trends. However, another population of unknown origin has occurred in arid habitats in the Sacramento Valley of California well outside this narrow bioclimatic niche since at least 1880. If native, this population would be ecologically distinct among indigenous North American red foxes. We used mitochondrial and microsatellite markers from historical and modern samples (modes: 1910–1930 and 2000–2008, …

Go to article

Development And Assessment Of A Pcb Layout And Manufacturong Laboratory Module In Introductory Electric Circuits For Ee And Non-Ee Majors, Albert Liddicoat, Jianbiao Pan, James G. Harris, Gary Perks, Linda Shepherd Jun 2010

Development And Assessment Of A Pcb Layout And Manufacturong Laboratory Module In Introductory Electric Circuits For Ee And Non-Ee Majors, Albert Liddicoat, Jianbiao Pan, James G. Harris, Gary Perks, Linda Shepherd

Industrial and Manufacturing Engineering

In standard introductory electric circuits laboratories for electrical engineering (EE) majors and non-EE majors, prototype boards are typically used to construct and test electric circuits. Students typically do not learn how to design and manufacture Printed Circuit Boards (PCB) that are commonly used in more sophisticated design projects and other engineering applications. This paper will present the development and assessment of a PCB layout and manufacturing laboratory module that has been used in introductory electric circuits laboratories for EE and non-EE majors. The feasibility of integrating the new PCB layout and manufacturing module into the electric circuit course will be …

Go to article

Greening The Green Revolution: Moving Beyond Chemicals To Sustainable Agricultural Practices, Elizabeth G. Crawley Jun 2010

Greening The Green Revolution: Moving Beyond Chemicals To Sustainable Agricultural Practices, Elizabeth G. Crawley

Electronic Theses and Dissertations

Agriculture has dominated the economy of many developing countries for centuries, which has led to development policies that center on agricultural development. An obvious approach to improved production is to decrease agricultural losses in the fields and increase efficiency to markets. This study focuses on the developmental role of pesticides and chemical fertilizers on non-traditional agricultural export farming and the adoption of IPM techniques. With farmers in the Comayagua Valley of Honduras, an Asian vegetable production center for the country, as the study population, the costs and benefits of planting oriental vegetables was examined. Statistical analysis was used to examine …

Go to article

Water Resources Research Center Annual Technical Report Fy 2009, New Hampshire Water Resources Research Center (Nh Wrrc) Jun 2010

Water Resources Research Center Annual Technical Report Fy 2009, New Hampshire Water Resources Research Center (Nh Wrrc)

NH Water Resources Research Center Scholarship

No abstract provided.

Go to article

2010 Summer - Registration Guide, Office Of The Registrar, East Tennessee State University Jun 2010

2010 Summer - Registration Guide, Office Of The Registrar, East Tennessee State University

Registration Resources

No abstract provided.

Go to article

Dogs And Technology: Our Most Beloved Companions In Twentieth And Twenty-First Century America, Claire V. Bow Jun 2010

Dogs And Technology: Our Most Beloved Companions In Twentieth And Twenty-First Century America, Claire V. Bow

Electronic Theses and Dissertations

Since the suburban rush and steep rise in household technological devices in the mid-twentieth century, Americans have drawn apart from each other, a shift that has coincided with a rise in both dog ownership and the adoption of handheld mobile devices. This paper argues that these phenomena, which are both ubiquitous and intimate in many American households, reflect one of the most basic and static human needs: the need for emotional connection. Furthermore, it is the unique combination of canine and digital elements that replace human-to-human social networks; networks that were once both literally and figuratively tightly drawn. In the …

Go to article

The Evolution Of Seeds, Ada Linkies, Kai Graeber, Charles A. Knight, Gerhard Leubner-Metzger Jun 2010

The Evolution Of Seeds, Ada Linkies, Kai Graeber, Charles A. Knight, Gerhard Leubner-Metzger

Biological Sciences

The evolution of the seed represents a remarkable life-history transition for photosynthetic organisms. Here, we review the recent literature and historical understanding of how and why seeds evolved. Answering the 'how' question involves a detailed understanding of the developmental morphology and anatomy of seeds, as well as the genetic programs that determine seed size. We complement this with a special emphasis on the evolution of dormancy, the characteristic of seeds that allows for long 'distance' time travel. Answering the 'why' question involves proposed hypotheses of how natural selection has operated to favor the seed life-history phenomenon. The recent flurry of …

Go to article

Moderately Thermophilic Magnetotactic Bacteria From Hot Springs In Nevada, Christopher T. Lefevre, Fernanda Abreu, Marian L. Schimdt, Ulysses Lins, Richard B. Frankel, Brian P. Hedlund, Dennis A. Bazylinski Jun 2010

Moderately Thermophilic Magnetotactic Bacteria From Hot Springs In Nevada, Christopher T. Lefevre, Fernanda Abreu, Marian L. Schimdt, Ulysses Lins, Richard B. Frankel, Brian P. Hedlund, Dennis A. Bazylinski

Physics

Populations of a moderately thermophilic magnetotactic bacterium were discovered in Great Boiling Springs, Nevada, ranging from 32 to 63°C. Cells were small, Gram-negative, vibrioid to helicoid in morphology, and biomineralized a chain of bullet-shaped magnetite magnetosomes. Phylogenetically, based on 16S rRNA gene sequencing, the organism belongs to the phylum Nitrospirae.

Go to article

Mapping The Medical Device Development Process, Scott T. Ham Jun 2010

Mapping The Medical Device Development Process, Scott T. Ham

Industrial Technology and Packaging

This project examined the use of process mapping as a tool to show the process of developing medical devices from a broad perspective that includes research, innovation, development, regulation, and marketing. The medical device development cycle, on a broad scope, is not well defined. The lack of a universal language with which to describe this process has made it difficult to understand and communicate. In this project, data was collected from peer-reviewed sources, summarized in a literature review, drawn out by hand into a series of lower-level process maps and finally assembled into a single process map. This project is …

Go to article

Fragaria Species Grown In A Greenhouse Cropping System Chemigated By Phosfite® And Bacillus® In Subsidence Of Phytophthora Fragariae And Verticillium Dahliae, Russell L. Morgan Jun 2010

Fragaria Species Grown In A Greenhouse Cropping System Chemigated By Phosfite® And Bacillus® In Subsidence Of Phytophthora Fragariae And Verticillium Dahliae, Russell L. Morgan

Earth and Soil Sciences

Strawberry yields depend directly on infestation of Phytophthora fragariae and Verticillium dahliae in correspondance to the use of Phosfite and Bacillus. The objective is to find understanding of newly administered techniques in prevention of Phytophthora fragariae and Verticillium dahliae and prohibiting the use of Methyl Bromide. Application of Phosfite and Bacillus on patented Fragariae species to identify utilization of P and ZN forms and their aid in prevention of Phytophthora and Verticillium species. In the Plots on the western bench the developmental symptoms of PRR disease were absent within all infested soil containers containing the FHS-1 crop. In the plots …

Go to article

Going Back To Go Global, Mary Mcnally Jun 2010

Going Back To Go Global, Mary Mcnally

Cal Poly Magazine

No abstract provided.

Go to article

The Use Of Horticulture And Gardening As A Special Education Tool At The High School Level, Krysta Marie Johnson Jun 2010

The Use Of Horticulture And Gardening As A Special Education Tool At The High School Level, Krysta Marie Johnson

Horticulture and Crop Science

THIS REPORT CONTAINS PLANNING METHODS AND INSTALLATION PROCEDURE FOR A RAISED VEGETABLE GARDEN FOR WILSONVILLE HIGH SCHOOL, IN WILSONVILLE, OREGON. THE PRIMARY PURPOSE OF THE GARDEN WAS TO USE IT AS A LEARNING TOOL FOR THE SPECIAL EDUCATION DEPARTMENT AT WILSONVILLE HIGH SCHOOL. UPON DOING MORE RESEARCH IT BECAME EVIDENT THAT THE GARDEN CAN ALSO BE USED AS A HEALING TOOL FOR STUDENTS WHO SUFFER FROM ATTENTION DISORDERS AND WHO HAVE EMOTIONAL AND LEARNING DISABILITIES. THE STUDENTS HAVE BECOME INVESTED IN THE GARDEN PROJECT AND LOOK FORWARD TO DOING MORE PROJECTS WITH THEIR CLASS.

Go to article

Design And Implementation Of Marine Biology Lessons At The Avila Beach Sea Life Center, Heather L. Price Jun 2010

Design And Implementation Of Marine Biology Lessons At The Avila Beach Sea Life Center, Heather L. Price

Biological Sciences

No abstract provided.

Go to article

A Cross Country Study Of The Role Of The Three Sectors On The Acceptance And Integration Of People With Intellectual And Physical Disabilities In Kenya And The United States Of America, Whitney Nash Jun 2010

A Cross Country Study Of The Role Of The Three Sectors On The Acceptance And Integration Of People With Intellectual And Physical Disabilities In Kenya And The United States Of America, Whitney Nash

College of Liberal Arts & Social Sciences Theses and Dissertations

This study examines acceptance and integration of people with intellectual and physical disabilities in the United States and Kenya and the involvement of the three sectors. The literature review revealed that significant progress was made over the past century in the United States, and the past decade in Kenya in treatment of people with disabilities, but there are still inefficiencies. Respondents to the survey reported that their clients struggle with acceptance and integration in their local community, and that services provided by the public and private sectors are inadequate. The findings of this study indicate that both the United States …

Go to article

Disruptive Excesses: Gender Economics, Excesses, And The Gaze In Marnie And Vertigo, Anthony Stagliano Jun 2010

Disruptive Excesses: Gender Economics, Excesses, And The Gaze In Marnie And Vertigo, Anthony Stagliano

College of Liberal Arts & Social Sciences Theses and Dissertations

No abstract provided.

Go to article

A Communicative Approach To Understanding Intergenerational Conflict Over Child Rearing, Lauren Marie Upton Jun 2010

A Communicative Approach To Understanding Intergenerational Conflict Over Child Rearing, Lauren Marie Upton

College of Liberal Arts & Social Sciences Theses and Dissertations

This research focuses on understanding intergenerational conflict over child rearing from a communicative perspective. The theoretical lens of relational dialectics was used to study opposing forces that exist between grandparents and parents. Through 12 semi-structured interviews with parents of children under the age of 12, parents shared experiences of intergenerational tension about child rearing. The results reveal three main dialectics of intergenerational conflict over child rearing; openness and closedness, involvement and indifference and a dominating existence of old and new. Understanding how parents manage the communicative relationships with grandparents is an integral part of parenting and contributes to maintaining a …

Go to article

Genetic Diversity Of The Chb6 Alloantigen, John Peter O'Laughlin Jun 2010

Genetic Diversity Of The Chb6 Alloantigen, John Peter O'Laughlin

College of Liberal Arts & Social Sciences Theses and Dissertations

Chickens are one of the classic models of vertebrate immunity. We have been interested in the role of the alloantigen chB6 (formerly called BU1) in the development of B cells within the bursa and have presented evidence that chB6 can trigger apoptosis. chB6 is an alloantigen and in the original report of its cloning three alleles were reported, chB6.1 in RPL line 6 flocks, chB6.2 in RPL line 7, and chB6.3 in Light Sussex birds. However, no further search for other chB6 alleles has been reported. Using the chicken EST database we have identified four potential new alleles of chB6, …

Go to article

The Anorexigenic And Hypertensive Effects Of Nesfatin-1 Are Reversed By Pretreatment With An Oxytocin Receptor Antagonist, Gina L.C. Yosten, Willis K. Samson Jun 2010

The Anorexigenic And Hypertensive Effects Of Nesfatin-1 Are Reversed By Pretreatment With An Oxytocin Receptor Antagonist, Gina L.C. Yosten, Willis K. Samson

Biological Sciences Faculty Research & Creative Works

Nesfatin-1 is an 82-amino acid protein encoded by the nucleobindin2 gene. When injected intracerebroventricularly, nesfatin-1, via a melanocortin 3/4 receptor-dependent mechanism, potently decreased both food and water intakes and elevated mean arterial pressure in a dose-related manner. Because nesfatin-1 colocalized with oxytocin in hypothalamus and because nesfatin-1 had direct depolarizing effects on oxytocin-producing neurons in hypothalamic slice preparations, we hypothesized that the actions of nesfatin-1 required the presence of functional oxytocin receptors. We, therefore, pretreated conscious, unrestrained male rats with the oxytocin receptor antagonist, ornithine vasotocin (OVT), before treatment with nesfatin-1. We found that pretreatment with OVT reversed the effects …

Go to article

Notch1 Functions As A Tumor Suppressor In A Model Of K-Ras–Induced Pancreatic Ductal Adenocarcinoma, Linda Hanlon, Jacqueline L Avila, Renée M Demarest, Scott Troutman, Megan Allen, Francesca Ratti, Anil K Rustgi, Ben Z Stanger, Fred Radtke, Volkan Adsay, Fenella Long, Anthony J Capobianco, Joseph L Kissil Jun 2010

Notch1 Functions As A Tumor Suppressor In A Model Of K-Ras–Induced Pancreatic Ductal Adenocarcinoma, Linda Hanlon, Jacqueline L Avila, Renée M Demarest, Scott Troutman, Megan Allen, Francesca Ratti, Anil K Rustgi, Ben Z Stanger, Fred Radtke, Volkan Adsay, Fenella Long, Anthony J Capobianco, Joseph L Kissil

Rowan-Virtua School of Osteopathic Medicine Departmental Research

K-ras is the most commonly mutated oncogene in pancreatic cancer and its activation in murine models is sufficient to recapitulate the spectrum of lesions seen in human pancreatic ductal adenocarcinoma (PDAC). Recent studies suggest that Notch receptor signaling becomes reactivated in a subset of PDACs, leading to the hypothesis that Notch1 functions as an oncogene in this setting. To determine whether Notch1 is required for K-ras-induced tumorigenesis, we used a mouse model in which an oncogenic allele of K-ras is activated and Notch1 is deleted simultaneously in the pancreas. Unexpectedly, the loss of Notch1 in this model resulted in increased …

Go to article

Regulatory Drivers For The Upper Illinois River And Other Regional Watersheds, Ray Weida Jun 2010

Regulatory Drivers For The Upper Illinois River And Other Regional Watersheds, Ray Weida

Arkansas Water Resources Center Technical Reports

Environmental regulations are put in place to protect the air, water and land from threat of pollution. Regulatory programs establish pollution limits, determine compliance, and enforce environmental laws and regulations for waterbodies within the watershed based on the designated uses for the individual waterbody. These established regulations make sure that the state’s mandatory standards for clean water and the minimum federal standards are being achieved. Environmental regulations are established on both the federal and state levels. On the federal level, Congress has authorized the U.S. Environmental Protection Agency and other governmental agencies to create and enforce regulations. The EPA delegates …

Go to article

Effects Of Development On Nutrient Loading: Septic System Influence Status Report: March 1 2009 Through February 28 2010, New Hampshire Water Resources Research Center (Nh Wrrc) Jun 2010

Effects Of Development On Nutrient Loading: Septic System Influence Status Report: March 1 2009 Through February 28 2010, New Hampshire Water Resources Research Center (Nh Wrrc)

NH Water Resources Research Center Scholarship

No abstract provided.

Go to article

A Pilot Study Of Septic Impacts On Water Quality: Using Boron Concentrations And Isotopes As A Source Tracer Status Report: March 1, 2009 Through February 28, 2010, New Hampshire Water Resources Research Center (Nh Wrrc) Jun 2010

A Pilot Study Of Septic Impacts On Water Quality: Using Boron Concentrations And Isotopes As A Source Tracer Status Report: March 1, 2009 Through February 28, 2010, New Hampshire Water Resources Research Center (Nh Wrrc)

NH Water Resources Research Center Scholarship

No abstract provided.

Go to article

Julie Huntington (2009). Sounding Off. Rhythm, Music And Identity In West African And Caribbean Francophone Novels, Philadelphia, Temple University Press, 243p., Robert Fotsing Mangoua Jun 2010

Julie Huntington (2009). Sounding Off. Rhythm, Music And Identity In West African And Caribbean Francophone Novels, Philadelphia, Temple University Press, 243p., Robert Fotsing Mangoua

Présence Francophone: Revue internationale de langue et de littérature

No abstract provided.

Go to article

First Prev Next Last