Digital Commons Network^™

What Are Consumers In Moyale, Kenya Willing To Pay For Improved Milk Quality?, D. Layne Coppock, Francis O. Wayua, Mohamed G. Shibia, Moses S. Mamo

Environment and Society Faculty Publications

Pastoralists in northern Kenya and southern Ethiopia may be able to diversify income by selling milk to urban residents. However, milk sold in open-air markets is often low in quality because it has been transported long distances without refrigeration and is subject to spoilage, or because milk is adulterated prior to sale to boost volume or enhance appearance. Open-air markets are characterized by low-income consumers who must make choices about milk quality with virtually no information other than their own sensory perceptions. PARIMA researchers used an experimental-auction approach to determine what residents in Moyale, Kenya, are willing to pay (WTP) …

A Simple Index Of Smoking, Abhaya Indrayan Dr., Rajeev Kumar Mr., Shridhar Dwivedi Dr.

COBRA Preprint Series

Background: Cigarette smoking is implicated in a large number of diseases and other adverse health conditions. Among the dimensions of smoking are number of cigarettes smoked per day, duration of smoking, passive smoking, smoking of filter cigarettes, age at start, and duration elapsed since quitting by ex-smokers. The practice so far is to study most of these separately. We develop a simple index that integrates these dimensions of smoking into a single metric, and suggest that this index be developed further. Method: The index is developed under a series of natural assumptions. Broadly, these are (i) the burden of smoking …

Lifestyle Of Shellmound Builders In Brazil (Galley Proofs), Sabine Eggers, C. C. Petronilho, K. Brandt, J. Filippini, Karl J. Reinhard

School of Natural Resources: Faculty Publications

The contact of inland and coastal prehistoric groups in Brazil is believed to have been restricted to regions with no geographical barrier, as is the case in the Ribeira de Iguape valley. The inland osteological collection from the riverine shellmound Moraes (5800–4500 BP) represents a unique opportunity to test this assumption for this region. Despite cultural similarities between riverine and coastal shellmounds, important ecological and site distribution differences are expected to impact on lifestyle. The purpose of this study is thus to document and interpret health and lifestyle indicators in Moraes in comparison to coastal shellmound groups. Specifically we test …

Inside Unlv, Shane Bevell, Tony Allen, Karen Sharp, Mamie Peers, Cate Weeks

Inside UNLV

No abstract provided.

Supplementing Cattle On Pasture: When, What And How Much?, Roy Burris

Kentucky Grazing Conference

The biggest advantage of maintaining cattle in the southeast is our ability to grow forages. It is generally an economic advantage to make maximum use of our forage and then supplement only when needed to meet our production goals. Judicious use of extra nutrition to grazing cattle can allow us to meet an objective which was best stated by Hoveland in 1986:

“Our objective is to maintain pasture at the highest quality that the environment will allow and efficiently convert as much of the pasture as possible into saleable animal product.”

Growth Of Grasses And Legumes: Impact On Grazing, S. Ray Smith

Kentucky Grazing Conference

The primary, cool season, perennial pasture grasses used in Kentucky are orchardgrass, bluegrass, and tall fescue. When not grazed or harvested, each of these passes through successive stages of growth in the spring: 1) leafy vegetative; 2) boot with seed heads enclosed in leaf sheath; 3) heading when the seed heads begin to show and, 4) bloom when pollination has occurred ( Figure 2). Since fiber and lignin contents increase steadily beyond the vegetative stage, while percent protein and digestibility decrease, a major goal in grazing management is to maintain these grasses in the leafy, vegetative stage at all times. …

Response Of Daphnia Magna To Episodic Exposures Of Several Types Of Suspended Clay, Sarah E. Robinson, Stephen J. Klaine

S.C. Water Resources Conference

2008 S.C. Water Resources Conference - Addressing Water Challenges Facing the State and Region

Demographics And Spatio-Temporal Signature Of The Biotoxin Domoic Acid In California Sea Lion (Zalophus Californianus) Stranding Records, Adriana Bejarano, Frances Gulland, Tracey Goldstein, Judy St. Leger, Michele Hunter, Lori Schwacke, Frances Vandolah, Teri Rowles

United States Department of Commerce: Staff Publications

California sea lions (Zalophus californianus) in otherwise good nutritional condition have been consistently affected by the marine biotoxin domoic acid since the late 1990s. In this study we evaluated the temporal and spatial stranding patterns of suspected and confirmed cases of domoic acid intoxicated sea lions from 1998 to 2006, using records of strandings along the California coast obtained from members of the California Marine Mammal Stranding Network. The majority of domoic acid cases were adult females (47%–82% of the total annual domoic acid cases), a contrast to strandings that were not related to domoic acid, which were …

Water Current, Volume 40, No. 4, Fall 2008

Water Current Newsletter

2009 Tour looks at San Francisco Bay-Delta Area
Meet the Faculty: Haishun Yang, Charles A. Shapiro
When Water Meets Money Topic of Conference
From the Director: Biofuels, Trends in Impacts on Water Demand, Supply and Quality
Nebraska Water Map Illustrates State Water Issues
Fourteen Lectures in UNL’s Spring Semester Water Series
How Human Pharmaceuticals Threaten Water Quality: A Primer on Emerging Contaminants, Part Two
Decommissioning Out-Of-Service Water Wells to Protect Water Quality
IANR/Extension Adopts “Water” Theme for 2008 Husker Harvest Days Show at Grand Island
2008 Water Colloquium, Oct. 16, 2008, UNL Hardin Hall, Lincoln
Water Resources Advisory Panel Updates …

Scwds Briefs: Volume 24, Number 3 (October 2008), Gary L. Doster , Editor, Scwds Briefs, Michael J. Yabsley

Southeastern Cooperative Wildlife Disease Study: Publications

Table of Contents:

Piroplasmosis in Florida Horses

Bovine TB Update

Newcastle Disease in Cormorants

Frog Virus in a Box Turtle

SCWDS Vesicular Stomatitis Research Update

Faculty and Staff Changes at SCWDS

Lead Study Results Reported

Lead Ammo and Tackle Review

Our Energizer Bunny

Inside Unlv, Diane Russell, Shane Bevell, Jennifer Vaughan

Inside UNLV

No abstract provided.

Corallivorous Reef Fishes As Potential Vectors Of Coral Disease Based On A Study Of Dietary Preferences, Tanya Rogers

Independent Study Project (ISP) Collection

The prevalence of coral disease appears to be increasing worldwide, although little is known about how these diseases are transmitted between coral colonies. To examine whether corallivorous fishes could potentially act as disease vectors, this study examined whether and which fish species feed on diseased coral, and whether these fishes actively target diseased coral sections. Branches of Acropora muricata with brown band disease were filmed in the field, and bites taken by fishes on different sections of the coral (live tissue, tissue margin, disease band, dead skeleton, and algae) were recorded. For each fish species, electivity indices were calculated for …

Hinchinbrook Area Boater’S Opinions Of And Compliance With Dugong Conservation Initiatives, Matilda Andersson

Independent Study Project (ISP) Collection

Taking into consideration past history of the area this report aims to examine the views of Hinchinbrook Area boaters and fishermen regarding conservation initiatives and indigenous hunting. A combination of surveying local boaters using a questionnaire and interviews conducted with local experts and people involved in dugong conservation resulted in both numeric results and many personal opinions.

Conservation initiatives include voluntary speed guidelines, voluntary transit lanes, and a Traditional Use of Marine Resource Agreement. Boaters’ opinions and compliance with all the initiatives was examined using a questionnaire which included a True or False section, personal opinions, compliance, and sighting information. …

Molecular And Macromolecular Alterations Of Recombinant Adenoviral Vectors Do Not Resolve Changes In Hepatic Drug Metabolism During Infection, Shellie M Callahan, Piyanuch Wonganan, Maria A Croyle

Faculty, Staff and Student Publications

In this report we test the hypothesis that long-term virus-induced alterations in CYP occur from changes initiated by the virus that may not be related to the immune response. Enzyme activity, protein expression and mRNA of CYP3A2, a correlate of human CYP3A4, and CYP2C11, responsive to inflammatory mediators, were assessed 0.25, 1, 4, and 14 days after administration of several different recombinant adenoviruses at a dose of 5.7 x 1012 virus particles (vp)/kg to male Sprague Dawley rats. Wild type adenovirus, containing all viral genes, suppressed CYP3A2 and 2C11 activity by 37% and 39%, respectively within six hours. Levels fell …

Applications Of The Bivariate Gamma Distribution In Nutritional Epidemiology And Medical Physics, Jolene Barker

Theses and Dissertations

In this thesis the utility of a bivariate gamma distribution is explored. In the field of nutritional epidemiology a nutrition density transformation is used to reduce collinearity. This phenomenon will be shown to result due to the independent variables following a bivariate gamma model. In the field of radiation oncology paired comparison of variances is often performed. The bivariate gamma model is also appropriate for fitting correlated variances. A method for simulating bivariate gamma random variables is presented. This method is used to generate data from several bivariate gamma models and the asymptotic properties of a test statistic, suggested for …

The Biomechanics Of Ballistochory In Impatiens Pallida, Lua Del Campo

Pomona Senior Theses

This research is an analysis of the explosive seed dispersal of Impatiens pallida fruit. Data was taken using high-speed video and analyzed using LoggerPro video analysis software. From the videos we discerned a qualitative model for dehiscence, a description of how the process unfolds, and from our data we deduced quantitative values for the velocity, momentum, and energy of the system. We were also able to glean a lower bound of Young’s modulus E of the fruit tissue. These results and the tools of analysis that generate them are the foundation for the development of a theoretical model of the …

Reduction Of Toxicity In The Premature Neonate Addociated With Aluminum As A Contaminant Of Total Parenteral Nutrition Solution, Sujittra Srisung

Dissertations

Aluminum (Al) is the third most common element in the Earth?s crust. It is widely consumed in water, foods, and drugs. However, in humans, the uptake of aluminum into the body and its deposition in tissues has been linked to conditions of medical concern, including many neurological disorders such as dialysis dementia, Alzheimer?s disease, Parkinson?s dementia and Down?s syndrome. Premature neonates who receive intravenous feeding (TPN) are at a high risk for Al toxicity because the TPN solutions are contaminated with Al3+, which is not excreted effectively due to poor kidney development in these patients. The FDA has recommended regulations …

Critical Review Of The Literature On Marine Mammal Population Modelling, Edward O. Keith

Marine & Environmental Sciences Faculty Reports

A comprehensive literature review and modeling effort have been conducted in order to determine which vital rates are most important to determining the growth and sustainability of marine mammal populations. Also addressed are the impacts of life-history, ecological, and genetic variation on vital rates and population sustainability and how much each vital parameter can change before a change in population trend would be expected. Additionally, the influence of ecological energetics and foraging strategies on vital rates and their limits of sustainable change are examined, and the nature of how an increase in sound in the marine environment might influence marine …

Iron Oxide Deposits Associated With The Ectosymbiotic Bacteria In The Hydrothermal Vent Shrimp Rimicaris Exoculata, Laure Corbari, Marie Anne Cambon-Bonavita, Gary J. Long, Fernande Grandjean, Magali Zbinden, Françoise Gaill, Philippe Compère

Chemistry Faculty Research & Creative Works

The Rimicaris exoculata shrimp is considered as a primary consumer that dominates the fauna of most Mid-Atlantic Ridge (MAR) hydrothermal ecosystems. These shrimps harbour in their gill chambers an important ectosymbiotic community of chemoautotrophic bacteria associated with iron oxide deposits. The structure and elemental composition of the mineral concretions associated with these bacteria have been investigated by using LM, ESEM, TEM STEM and EDX microanalyses. The nature of the iron oxides in shrimps obtained from the Rainbow vent field has also been determined by Mössbauer spectroscopy. This multidisciplinary approach has revealed that the three layers of mineral crust in the …

Evidence On The Role Of Supplier-Retailer Trading Relationships And Practices In Waste Generation In The Food Chain, Carlos Mena, Peter Whitehead

Business Faculty Publications and Presentations

This report presents the results of the project entitled “Evidence on the role of supplier-retailer trading relationships and practices in waste generation in the food chain” commission by Defra (Project Code SFFSD0705) and undertaken by Cranfield University and IGD between July 2008 and June 2009.

The overall aim of the project was to provide a qualitative analysis of the food and packaging waste arising from the link between food manufacturers and retailers in the UK. The specific objectives of the project were:

• To identify the root causes of waste between suppliers and retailers in the UK
• To assess the magnitude …

Farm Gate Nutrient Balances In South West Western Australia – An Overview, Rebecca Ovens, David Weaver, Nardia Keipert, Simon Neville, Robert Summers, Martin Clarke

Conference papers and presentations

Farm-gate nutrient budgets can be used to identify the efficiency of nutrient use within and between individual enterprises and catchments, and may be used to represent a component of the risk that particular landuses represent to water quality. Over the past 5 years, more than 400 farm-gate nutrient balance audits have been conducted across a range of catchments and landuses in southwest Western Australia (WA). Values for nutrient use efficiency and surpluses across landuses and catchments are reported. Patterns of nitrogen and phosphorus signatures closely reflect one another across landuses, though nitrogen input, output and surplus values are consistently higher …

Monitoring Metal Containing Particulates Distribution On A College Campus Using Dandelion (Taraxacum Officinale) Leaves As Receptors., Suresh Chandra Regmi

Electronic Theses and Dissertations

This study aims to determine the distribution of particulates carrying heavy metals at selected sites on a college campus using dandelion leaves as collectors. As a comparison, sites far away from the campus surrounding Bristol Motor Speedway Car Racing Stadium were also monitored. To reduce the probability of memory effects from the long-term atmospheric deposition or absorption of metals from soil a seasonal plant, dandelion, was used to monitor the metal contents. The metals monitored are cadmium, calcium, copper, chromium, iron, lead, and zinc. Fourteen sites were monitored and samples were collected once a week initially (growing time of the …

Fisheries Research Report No. 178 - Aquaculture Feed Grains Program, Brett Glencross

Fisheries Research Reports

Incorporating:

GRDC Project UWA00062: Development of value-added plant protein products for the aquaculture feeds sector

and

FRDC Project 2004-236: Aquaculture Nutrition Subprogram - Evaluation of Value-added Grain Protein Products for Atlantic Salmon and Black Tiger Prawns

Objectives

1. Development of value-added lupin protein product(s) for use in the animal feeds sector.

2. Evaluation of the nutritional value of a range of value-added lupin protein products when fed to fish.

3. Commercial transfer of intellectual property for development of new-product(s).

4. To determine the nutritional value of selected grain products developed as part of the linked CLIMA-GRDC project, when included in …

A Spatial Analysis Of Anthropogenically Derived And Naturally Occurring Environmental Controls On Corn-Based Ethanol Production In Nebraska, Nathan Charles Healey

School of Natural Resources: Dissertations, Theses, and Student Research

Transportation fuels are an integral part of political, economic, social, and environmental arenas. Traditionally, fossil fuels have been utilized most heavily due to their abundance and economic value. Currently, social and political concerns about harmful emissions (greenhouse gases) from fossil fuel combustion have enhanced interest in alternative fuels that do not have the same environmental consequence. Numerous alternative fuels are produced globally including methanol, biodiesel, hydrogen cells, and ethanol (ethyl alcohol). In America, ethanol is produced from com due to the existence of the "Com Belt" and abundant corn production. Understanding the capacity for America to sustain expansion of alternative …

Rational Design Of A Minimal Size Sensor Array For Metal Ion Detection, Manuel A. Palacios, Zhuo Wang, Victor A. Montes, Grigory V. Zyryanov, Pavel Anzenbacher Jr.

Chemistry Faculty Publications

The focus of this study was to demonstrate that, in the luminescent sensors, the signal transduction may possibly be the most important part in the sensing process. Rational design of fluorescent sensor arrays for cations utilizing extended conjugated chromophores attached to 8-hydroxyquinoline is reported. All of the optical sensors utilized in the arrays comprise the same 8-hydroxyquinoline (8-HQ) receptor and various conjugated chromophores to yield a different response to various metal cations. This is because the conjugated chromophores attached to the receptor are partially quenched in their resting state, and upon the cation coordination by the 8-HQ, the resulting metalloquinolinolate …

The Association Of Maternal Intention To Breastfeed, Early Skin-To-Skin Mother/Infant Contact, And Exclusive Breastfeeding During The Maternity Hospital Stay, Leslie Mary Bramson

Loma Linda University Electronic Theses, Dissertations & Projects

Breastfeeding is the optimal method to nourish and nurture an infant. Exclusive breastfeeding rates in the United States have reached the goal of Healthy People 2010 that 75% of mother's breastfeed in the immediate postpartum period. Yet, less than 35% of San Bernardino county mothers and 47.7% of Riverside county mothers are exclusively breastfeeding during their maternity hospital stays, with as many as 50% of the infants being weaned from the breast in the first 14 days of life.

This prospective study examined archived data collected by Perinatal Services Network (PSN) of Loma Linda University Medical Center/Children's Hospital for the …

Optical And Electrochemical Molecular And Nanoscale Sensors For The Selective Detection Of Organophosphorus Based Pesticides, Chandrima De

Masters Theses

Organophosphorus based pesticides are highly toxic and represent serious environmental concerns. These compounds tend to easily enter ground water and cause drastic pollution. The toxicity levels of the organophosphorus pesticides however are based on their structures, and hence methods for their selective detection are in high demand. The creation of new materials for sensing and actuation requires careful manipulation of the responsive units required to control analyte selectivity. We have successfully designed and synthesized a molecular sensor based on the family of stilbenes that not only can detect organophosphorus pesticides, but also distinguish between them. Four different pesticides have been …

Mechanical Properties Of Plant Underground Storage Organs And Implications For Dietary Models Of Early Hominins, Nathaniel J. Dominy, Erin R. Vogel, Justin D. Yeakel, Paul J. Constantino, Peter W. Lucas

Biological Sciences Faculty Research

The diet of early human ancestors has received renewed theoretical interest since the discovery of elevated d13C values in the enamel of Australopithecus africanus and Paranthropus robustus. As a result, the hominin diet is hypothesized to have included C4 grass or the tissues of animals which themselves consumed C4 grass. On mechanical grounds, such a diet is incompatible with the dental morphology and dental microwear of early hominins. Most inferences, particularly for Paranthropus, favor a diet of hard or mechanically resistant foods. This discrepancy has invigorated the longstanding hypothesis that hominins consumed plant underground storage organs (USOs). Plant USOs are …

A Novel And Simple Rule Of Thumb For Multiplicity Control In Equivalence Testing Using Two One-Sided Tests, Carolyn Lauzon, Brian S. Caffo

Johns Hopkins University, Dept. of Biostatistics Working Papers

Equivalence testing is growing in use in scientific research outside of its traditional role in the drug approval process. Largely due to its ease of use and recommendation from the United States Food and Drug Administration guidance, the most common statistical method for testing (bio)equivalence is the two one-sided tests procedure (TOST). Like classical point-null hypothesis testing, TOST is subject to multiplicity concerns as more comparisons are made. In this manuscript, a condition that bounds the family-wise error rate (FWER) using TOST is given. This condition then leads to a simple solution for controlling the FWER. Specifically, we demonstrate that …

Using Local Data To Advance Quantitative Literacy, Stephen Sweet, Susanne Morgan, Danette Ifert Johnson

Numeracy

In this article we consider the application of local data as a means of advancing quantitative literacy. We illustrate the use of three different sources of local data: institutional data, Census data, and the National College Health Assessment survey. Our learning modules are applied in courses in sociology and communication, but the strategy of using local data can be integrated beyond these disciplinary boundaries. We demonstrate how these data can be used to stimulate student interests in class discussion, advance analytic skills, as well as develop capacities in written and verbal communication. We conclude by considering concerns that may influence …