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Dynamic Versus Instantaneous Models Of Diet Choice, Brian O. Ma, Peter A. Abrams, Chad Brassil

School of Biological Sciences: Faculty Publications

We investigate the dynamics of a series of two-prey-one predator models in which the predator exhibits adaptive diet choice based on the different energy contents and/or handling times of the two prey species. The predator is efficient at exploiting its prey and has a saturating functional response; these two features combine to produce sustained population cycles over a wide range of parameter values. Two types of models of behavioral change are compared. In one class of models (“instantaneous choice”), the probability of acceptance of the poorer prey by the predator instantaneously approximates the optimal choice, given current prey densities. In …

Obesity Among Saudi Male Adolescents In Riyadh, Saudi Arabia, Mohammed O. Al-Rukban

Saudi Medical Journal

OBJECTIVE: The purpose of the study was to determine the prevalence of overweight and obesity and its correlates among Saudi male adolescents in Riyadh. As well as evaluating their knowledge, attitude and practice towards obesity. METHODS: A cross-sectional study conducted in intermediate and secondary schools in Riyadh, Saudi Arabia was carried out during a 5-month period, September 2001 - January 2002. A sample of 894 Saudi male adolescents (age 12-20 years) was selected through the multi-stage sampling technique. Socio-demographic characteristics; dietary and activity history; obesity-related knowledge and behavior; and family and past medical history data were obtained by a self-administered …

Spontaneous Resolution Of Infantile Nephrotic Syndrome, Aftab S. Chishti

Saudi Medical Journal

Congenital nephrosis is a rare disease with universally accepted poor prognosis; despite developments in the pathogenesis and management, these children are always a challenge to the caregivers and families. Reported here, is a case of a 6-month-old female infant with infantile nephrotic syndrome, who went into spontaneous resolution within a week without therapy and remained asymptomatic for the following 2 years.

Paradoxical Response In Tuberculosis And Reversal Reaction In Leprosy. Different Terminology For Same Immunology?, Sarosh Khan, Abdulrahman Bhat, Latif A. Khan

Saudi Medical Journal

No abstract provided.

The Safety Of Genetically Modified Foods Produced Through Biotechnology, Robert M. Hollingworth, Leonard F. Bjeldanes, Michael Bolger, Ian Kimber, Barbara Jean Meade, Steve L. Taylor, Kendall B. Wallace

Department of Food Science and Technology: Faculty Publications

The Society of Toxicology (SOT) is committed to protecting and enhancing human, animal, and environmental health through the sound application of the fundamental principles of the science of toxicology. It is with this goal in mind that the SOT defines here its current consensus position on the safety of foods produced through biotechnology (genetic engineering). These products are commonly termed genetically modified foods, but this is misleading, since conventional methods of microbial, crop, and animal improvement also produce genetic modifications and these are not addressed here.
The available scientific evidence indicates that the potential adverse health effects arising from biotechnology-derived …

Consumption Of Omega-3 Fatty Acid-Enriched Eggs And Serum Lipids In Humans, Ji-Young Lee, Nancy M. Lewis, Sheila Scheideler, Timothy P. Carr

Department of Nutrition and Health Sciences: Faculty Publications

This study examined the effectiveness of consuming omega-3 fatty acid-enriched eggs (Omega Eggs) in increasing total diclary omega-3 fatty acids. Also examined was the impact of Omega Egg consumption on serum lipids. Sixteen hypercholesterolemic men and women with baseline serum total cholesterol concentrations of 5.17-7.76 mmol/L (200-300 mg/dL) followed the National Cholesterol Education Program Step I diet guidelines under the following conditions: (a) Step 1 diet without eggs, (b) Step I diet plus 12 regular eggs per week, and (c) Step I diet plus 12 Omega Eggs per week. The study design was a repeated 3 x 3 Latin square …

Breastfeeding Or Bust: The Need For Legislation To Protect A Mother's Right To Express Breast Milk At Work, Elissa Aaronson Goodman

Cardozo Journal of Equal Rights & Social Justice

The note argues that current federal legislation, including Title VII, the ADA, and the FMLA, fails to adequately protect women's rights to express breast milk in the workplace. It advocates for a federal statute specifically addressing this issue, as existing laws are insufficient due to narrow interpretations and lack of explicit protections. The note emphasizes the importance of breastfeeding for infant health and maternal well-being, while also highlighting the benefits for employers, such as reduced absenteeism and healthcare costs. Without federal legislation, women face significant barriers to expressing breast milk at work, perpetuating disparities in breastfeeding rates.

Future Directions For The Integrated Csfii-Nhanes: What We Eat In America–Nhanes, Johanna Dwyer, Mary Frances Picciano, Daniel J. Raiten

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

The history of the integration of the dietary data collection from the National Health and Nutrition Examination Survey (NHANES) and the Continuing Survey of Food Intakes by Individuals (CSFII) is reviewed. The purposes and process of the workshop are presented. The three key topics of the workshop are summarized. The key roles of cosponsors and participants are acknowledged.

Normal Acquisition And Loss Of Bone Mass, Steven A. Abrams

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

The natural patterns of bone mass accumulation and loss with age represent the templates of individual life cycle periods that are distinguished by marked, physiologically and genetically identifiable, changes in bone mass. During the third trimester of pregnancy, maternal calcium absorption increases and the fetus accumulates about two-thirds of the total bone mass of the term infant. In early infancy, human milk calcium is derived primarily from maternal bone stores, which incur substantial bone losses that are quickly replenished during and after weaning. At puberty, a marked increase in bone mass occurs in conjunction with the initial physical and hormonal …

The Safety Of Genetically Modified Foods Produced Through Biotechnology, Robert M. Hollingworth, Leonard F. Bjeldanes, Michael Bolger, Ian Kimber, Barbara Jean Meade, Steve L. Taylor, Kendall B. Wallace

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

The Society of Toxicology (SOT) is committed to protecting and enhancing human, animal, and environmental health through the sound application of the fundamental principles of the science of toxicology. It is with this goal in mind that the SOT defines here its current consensus position on the safety of foods produced through biotechnology (genetic engineering). These products are commonly termed genetically modified foods, but this is misleading, since conventional methods of microbial, crop, and animal improvement also produce genetic modifications and these are not addressed here.

The available scientific evidence indicates that the potential adverse health effects arising from biotechnology-derived …

Biology Of Diorhabda Elongata Deserticola (Coleoptera: Chrysomelidae), An Asian Leaf Beetle For Biological Control Of Saltcedars (Tamarix Spp.) In The United States, Phil A. Lewis, C. Jack Deloach, Allen E. Knutson, James L. Tracy, Thomas O. Robbins

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Adults and larvae of Diorhabda elongata Brullé subspecies deserticola Chen feed on the foliage of saltcedars (Tamarix spp.). All three instars are black, the 2nd with an indistinct, and the 3rd with a distinct yellowish lateral stripe; full-grown larvae reach ca. 9mm in length and pupate in cells in litter on the ground or a few cm below the soil surface. Adults are yellowish with two dark brown stripes on each elytron. Duration of the egg averaged 5 days, 1st instar 4.9 days, 2nd instar 4.8 days, 3rd instar 7.4 days, prepupa 4.8 days, and pupa 7.1 days at …

Defining Microcredit Success In Bolivia, Kelly Miller

Honors Theses

The structure of this study is as follows: The first chapter describes the origin of microcredit and the three major lending models. This chapter also includes a description of the motivation of the study as well as the methodology used. The second chapter illustrates the changes of development strategies in Bolivia and identifies the motivation behind and significance of each development method. The third chapter discusses the informal sector, which is the targeted population of microcredit. This chapter presents several theories about the development of the informal sector and illustrates how politics shape the informal sector in Bolivia. The fourth …

Use Of Date Pits As An Energy Source For Nile Tilapia, Oreochromis Niloticus, Maitha Mohammed Sultan Al-Darmaki

Theses

The present study was conducted to evaluate date pits as an energy source of Nile tilapia fingerlings and adults, in two consecutive experiments. In the first experiment, five isocaloric (450 kcal/100g)-isonitrogenous (35% crude protein) diets containing of date pits as a replacement for wheat bran (energy source) 0, 25, 50, 75 and 100% levels were prepared. The diets were fed to duplicate groups of Nile tilapia, Oreochromis niloticus fingerlings and adults, with average initial weights of 10 and 50g, respectively twice a day, for 70 days. The culture system consisted of 70-L, fiberglass tanks connected together in a closed system. …

Legislating With Integrity, Jeremy Waldron

Fordham Law Review

No abstract provided.

The Impact Of Raising And Exhibiting Selected 4-H Livestock Projects On The Development Of Life And Project Skills, Clinton P. Rusk, Jill M. Summerlot-Early, Krisanna L. Machtmes, B. Allen Talbert, Mark Balschweid

Department of Agricultural Leadership, Education, and Communication: Faculty Publications

The purpose of the study was to identify perceptions of Indiana 4-H livestock members enrolled in beef, sheep and swine projects regarding their ability to perform project skills and develop life skills. A questionnaire was mailed to a sample of 420 4-H beef, sheep, and swine members, with a response rate of 41.9%. Members were able to accomplish project skills in the areas of sportsmanship, safety, animal grooming, and animal selection. Respondents are not as confident in their abilities related to animal health care. Members who exhibited at the state fair have higher skill levels in the areas of animal …

Phase-Feeding Affects Crude Protein Intake, Excretion, And Retention Of Broilers From 21 To 63 Days, Niki Loupe, Trey Pope, Padmakumar Pillai, Jason Emmert

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

An experiment was conducted to assess effects of phase-feeding (PF) on crude protein (CP) intake, excretion, and retention of broilers. Six birds were housed individually and were fed diets formulated using recommendations from National Research Council (NRC) or linear regression equations. Two PF treatments were prepared: standard (PF) and low (PF10), in which predicted lysine, sulfur amino acids, and threonine recommendations were reduced by 10%. For PF and PF10, two diets (high-nutrient and low-nutrient density) were blended in variable quantities to produce rations matching predicted amino acid requirements over two intervals. Birds were fed a single NRC grower and finisher …

Adolescent Participation In School Nutrition Meal Benefit Programs: A Case Study, Janice P. Maddox

Abraham S. Fischler College of Education ETD Archive

This applied dissertation is a historical case study targeted at the segment of a high school population who are eligible for free or reduced price meal benefits but do not take advantage of these benefits. The population to be studied is those students who take advantage of the free or reduced price benefits to which they are entitled less than 50% of the days that school is in session. Frequency of eating counts will be compared for the past 11 years in order to discern if the target population participation has changed over the years by programs designed to increase …

Intervention Plan To Reduce Truancy Of Seventh-, Eighth-, And Ninth-Grade Students, Mike Stiefel

Abraham S. Fischler College of Education ETD Archive

This applied dissertation describes the attendance problems of students at Wellborn High School. Wellborn High School is 1 of 7 high schools in the Calhoun County School District. Located in a community with a high poverty rate and limited employment opportunities, the school has the highest percentage of truancy of 7th-, 8th-, and 9th-grade students in the district. Many parents of this community do not value education; therefore, they are indifferent to enforcing the attendance policy of the school district.

A review of selected literature was conducted to identify causes of truancy. After identification of many characteristics of truancy and …

Effect Of Geochemical Processes And Environment On The Spatial Pattern Of Selenium In Soil, Surface Water, And Groundwater At The Hovland Ranch, Central South Dakota, Salah U. Sharif

Theses and Dissertations

The objective of this paper is to test and review some of the published hypotheses as that may relate to selenium geochemistry in soil and water system at the Hovland Ranch, Haakon County, South Dakota. Representative samples were collected from soil, water, and soil moisture in the field. Preparation of samples and chemical analysis were done in the Water Quality Laboratory, Dept. of Geology and Geological Engineering, University of North Dakota and Human Nutrition Research Center Lab, USDA/ARS, Grand Forks, North Dakota. The analysis results were statistically analyzed to find correlation between the occurrence of selenium and other associated chemical …

The Apparition Of Fat In Western Nutritional Theory, Ken Albala

College of the Pacific Faculty Books and Book Chapters

No abstract provided.

Postsecondary Readiness Skills: Perceptions Of Students With And Without Disabilities, Carol Mae White

UNLV Retrospective Theses & Dissertations

The purpose of this study was to investigate the differences in the perceptions of postsecondary readiness skills between students with emotional disorders, students with learning disabilities, and students with no disabilities. Participants consisted of 91 students, 12 students with emotional disorders, 47 students with learning disabilities, and 32 students without disabilities in grades 11 and 12 who were planning on transitioning to postsecondary education. Data were collected to determine if there were significant differences in perceptions of postsecondary readiness skills among the three groups of students, specifically on eight domains: general preparation, academic preparation, self-determination and advocacy, academic accommodations and …

Effects Of Classwide Peer Tutoring (Cwpt) On Social Interactions Of Children With And Without English Proficiency, Yaoying Xu

UNLV Retrospective Theses & Dissertations

Learning and Education occur in social contexts. The quality of children's peer relationships is an important indication of children's current and later social adjustment. Children with peer problems tend to experience higher levels of loneliness and other undesirable affective consequences, including social dissatisfaction and worrying about peer relations. Because of the limited language proficiency and cultural and ethnic differences among children with LEP, some of their social behaviors are considered inappropriate by their non-LEP teachers and peers. On the other hand, children with LEP may feel that they do not fit in a group or class activity. As a result, …

Biology, Culture, And Environment: The Struggle For Hegemony In Arizona, Sondra Kae Cosgrove

UNLV Retrospective Theses & Dissertations

This is an examination of the various cultural groups who have attempted to extend hegemony control over what is now the state of Arizona. Each chapter focuses on the ways different societies adapted to the region's challenging environment; paying particular attention to those that sought to integrate their neighbors into their own socioeconomic systems, whether by force or through negotiation. The rise and fall of the indigenous Hohokam civilization marks the first phase in this struggle for hegemony, while conflicts between Spaniards and Indians characterize the second. The third, and so far, final cycle concludes with Euro-Americans seizing the region …

The Use Of Music In The Surgical Setting, Jenny A. Stenehjem

Theses and Dissertations

No abstract provided.

Homelessness: A Qualitative Genogram Analysis Of Trauma And Addictions, Lorraine K Moss

UNLV Retrospective Theses & Dissertations

This study conducts a qualitative analysis of genograms based from a homeless population sample. The purpose of the study is to illustrate a pattern within the homeless population of a generational history of the conditions of traumatic experiences and addictions during childhood and young adulthood, prior to becoming homeless. This study is not intended to show causal relationships between the two conditions of homelessness, rather, a prior pattern of the two conditions; The data was collected by graduate students at the University of Nevada, Las Vegas, during the student's advanced practicum/internship classes occurring in the final year of the master …

Effects Of Elevated Carbon Dioxide On Bromus Rubens And Nutritional Consequences For The Desert Tortoise, Kristen Marie Murphy

UNLV Retrospective Theses & Dissertations

The purpose of this research was to determine the effect of elevated atmospheric carbon dioxide conditions on forage quality for the desert tortoise (Gopherus agassizii), using a common diet component, Bromus rubens. Nitrogen balance was monitored for tortoises fed pelleted diets reflecting the nitrogen levels of Bromus plants grown under elevated and ambient CO2 conditions, with varying potassium levels (3.5% and 1.4% DWB). Nitrogen content in the diet approached a positive correlation with total diet intake (p = 0.11), and was positively correlated with nitrogen loss at alpha = 0.10 (p = 0.08) and yet remained positively correlated with nitrogen …

The Effects Of Exercise On Homocysteine Levels In Men And Women, Tracey Michelle Zuehlsdorff

UNLV Retrospective Theses & Dissertations

A recent coronary risk factor, and one believed to be and important biochemical marker of Coronary Heart Disease, is elevated levels of serum homocysteine (Boushley et al., 1995; Malinow et al., 1994; Malinow et al., 1999; Nygard et al., 1995; Stampfer et al., 1992). Serum homocysteine levels above 10 umol/L are considered elevated. There are several unalterable factors, which result in the elevation of homocysteine such as heredity, age, and gender. There are other factors that are alterable such as diet and possibly exercise. The purpose of the study was to determine if a 12-week daily progressive exercise program reduced …

Welfare Reform: Politics, Policy And The Courts, Paul Marion Loomis

UNLV Retrospective Theses & Dissertations

Welfare Reform: Politics, Policy and The Courts is a detailed analysis of welfare reform as directed by Congress in the Personal Responsibility Act of 1996. The thesis entails the following: an analysis of the historical factors that have led to legislative reform of the US welfare policy; an examination of the requirements the Act has placed on the states and the states' efforts to meet those requirements; issues of legitimacy that surround welfare reform, as well as US Supreme Court decisions that have helped shape welfare policy. Finally, an assessment of the direction of future welfare reform.

Measurement Of Inorganic Arsenic And Chromium Species In Southern Nevada Groundwater Using Ion Chromatography-Inductively Coupled Plasma Mass Spectrometry, Julie A Bertoia

UNLV Retrospective Theses & Dissertations

Two analytical methods employing an ion chromatograph-inductively coupled plasma mass spectrometer were used to separate inorganic arsenite from arsenate and trivalent from hexavalent chromium in southern Nevada groundwater. Method detection limits were found to be 0.011 ppb and 0.005 ppb for arsenite and arsenate respectively, and 0.015 ppb and 0.02 ppb for trivalent and hexavalent chromium respectively. Following an investigation of the stability of the oxidation states of arsenic and chromium in aqueous solution with time, the following procedures were adopted. Samples collected in the field for arsenic were filtered, stored at 4°C, and analyzed within 7 days; and those …

The Psychological Impact Of Carrier Status In Hereditary Disorders, Jane Elizabeth Karwoski

UNLV Retrospective Theses & Dissertations

Previous studies have indicated that carrier status has little effect on self-concept. However, rather than examine autosomal recessive illnesses, wherein genetic responsibility is shared by both parents, the present study samples women at risk of being sole carriers of an X-linked hereditary disorder, Duchenne muscular dystrophy. Previous research most often assessed global self-esteem, thus problems in particular domains (such as future parental role or desirability as a mate) have generally been overlooked. Herein, a stigmatizing process is hypothesized whereby one aspect of the self, genetic identity, may be spoiled through a diminished sense of worthiness to reproduce. Family attitudes toward …