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A Framework For Assessing The Rationality Of Judgments In Carcinogenicity Hazard Identification, Douglas J. Crawford-Brown, Kenneth G. Brown

RISK: Health, Safety & Environment (1990-2002)

Arguing that guidelines for identifying carcinogens now lack a philosophically rigorous framework, the authors present an alternative that draws clear attention to the process of reasoning towards judgments of carcinogenicity.

Life In Captivity: Its Lack Of Opportunities For Variable Behaviour, Françoise Wemelsfelder

Zoos and Aquariums Collection

No abstract provided.

Nebline, August 1997

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Lancaster County Fair: July 30-August 3
“One Call--that's all”
4-H gardeners attend garden workshops
Control of ground ivy in the lawn
August blooming perennial flowers
1997 Household Hazardous Waste Collections
Shortest shower award
Antlions: the good, the odd and the ugly
Pesticide container recycling at fair, other sites in August
Bat sightings increase in August
Reuse wire coat hangers
Seedbeds for late summer alfalfa planting
Oats for fall pasture or hay
Evening program to highlight irrigation management and well decommissioning
How to deal with animal heat stress
Make plans now for passing on the family farm
Improve livestock water distribution …

Windlass Taping Technique For Symptomatic Relief Of Plantar Fasciitis, Beth Anne Ernst

Rehabilitation Sciences Theses & Dissertations

This study investigated the biomechanical and symptomatic effects of a newly described taping technique to support the longitudinal arch in symptomatic plantar fasciitis patients. The subjects were 20 individuals all diagnosed by a physician with unilateral plantar fasciitis, ambulating full weight-bearing without an assistive device.

Measurements were taken pre and post-taping for calcaneal position, tibial position and navicular height, with the subjects serving as their own control. The subjects also reported pain level pre and post tape using a visual analog scale. The statistical analysis performed on the biomechanical data was the t-test, and Wilcoxon matched-pairs signed ranks test was …

Vocalizations By Isolated Piglets: A Reliable Indicator Of Piglet Need Directed Towards The Sow, Daniel M. Weary, Stephen Ross, David Fraser

Communication Skills Collection

When suckling piglets are isolated from the sow and litter-mates they vocalize a great deal. Sows also call when isolated from their piglets. In one experiment, we found that isolated piglets doubled their call rate in response to playback of sow calls, indicating that piglets are directing calls towards the sow. In a second experiment, we found that variation in the piglet isolation calls related to aspects of the piglet's condition: piglets isolated for 13 min in an enclosure kept at approximately 14°C called more, used higher frequency calls and longer calls, than litter-mates isolated in an enclosure kept at …

Santa Clara Magazine, Volume 39 Number 2, Summer 1997, Santa Clara University

Santa Clara Magazine

6 - THE BEST TEST SCORE MONEY CAN BUY If you can afford it, taking a cram course can make a difference. But does a higher score indicate the breadth of your knowledge or just the thickness of your wallet? By Jeff Brazil '85

12 - THE FUTURE OF HISTORY MAJORS Studying the past can lead to present-day success. By Kathryn Bold '81

16 - BITTER HARVEST Researchers witness the impact of civil war, famine, and Islamic militants on life in a Sudanese village. By Susan Frey

Elephant Days And Nights: Ten Years With The Indian Elephant, Robert H.I. Dale

Scholarship and Professional Work - LAS

Book review for the following title:

Elephant Days and Nights. By Raman Sukumar (George B. Schaller, foreword), Oxford University Press, 1996, 200 pages.

Transcranial Magnetic Stimulation Of The Prefrontal Cortex Delays Contralateral Endogenous Saccades, Tony Ro, Avishai Henik, Liana Machado, Robert D. Rafal

Publications and Research

The contributions of the superior prefrontal cortex (SPFC) and the superior parietal lobule (SPL) in generating voluntary endogenous and reflexive visually guided saccades were investigated using transcranial magnetic stimulation (TMS). Subjects made choice saccades to the left or right visual field in response to a central arrowhead (endogenous go signal) or a peripheral asterisk (exogenous go signal) that were presented along with a single TMS pulse at varying temporal intervals. TMS over the SPFC increased latencies for saccades made in response to an endogenous go signal toward the contralateral hemifield. No effects were observed when the go signal was exogenous …

Head Direction Cells And Episodic Spatial Information In Rats Without A Hippocampus, Edward J. Golob, Jeffrey S. Taube

Dartmouth Scholarship

To successfully navigate through the environment animals rely on information concerning their directional heading and location. Many cells within the postsubiculum and anterior thalamus discharge as a function of the animal’s head direction (HD), while many cells in the hippocampus discharge in relation to the animal’s location. We placed lesions in the hippocampus and recorded from HD cells in the postsubiculum and anterior thalamus. Lesions of the hippocampus did not disrupt the HD cell signal in either brain area, indicating that the HD cell signal must be generated by structures external to the hippocampus. In addition, each cell’s preferred firing …

Oral Cancer Screening, Damon Omar Watson

Honors Theses

Cancers of the oral cavity and pharynx have increased throughout the decades. Since oral cancer represents a small percentage of the total cancers in the United States, it is often overlooked. Though this is the case, the results of this cancer can be devastating. To address this issue, an Oral Cancer Screening was organized on August 14, 1996 at the West Michigan Cancer Center in Kalamazoo. This was a joint collaboration between the author, the West Michigan Cancer Center, and the Kalamazoo Valley Dental Society. This event allowed research to take place concerning the data obtained. Confidential results and information …

Coming To Terms With Heritability, Scott F. Stoltenberg

Department of Psychology: Faculty Publications

The complex mechanisms of heredity are little appreciated by nonspecialists, in some measure, because of misunderstandings that are perpetuated when words used for technical terms have other, more widely understood, folk meanings. When a word has both technical and folk meanings, it is the responsibility of the specialist to avoid promoting confusion by either using extremely cautious and precise language when using the term or, in cases when confusion is inevitable, abandoning the term in favor of one without a widely understood folk meaning. The study of heredity is beset by such confusion, and the term heritability appears to be …

Psychosocial Risks Of Storing And Using Human Tissues In Research, Jon F. Merz

RISK: Health, Safety & Environment (1990-2002)

Dr. Merz argues that genetics technology makes it more compelling that researchers plan more carefully for the collection and disposition of information derived from subjects' tissues and blood.

Celluloid Blackness : Race, Modernity, And The Conflicted Roots Of American Cinema (1915-1939), Lincoln Farr

Honors Theses

Introduction: "The Problem of the Twentieth Century" In a full page interview in the New York Times on May 29, 1912, the Swiss psychiatrist Dr. Carl G. Jung told the American people, "It seems to me that you are about to discover yourselves. You have discovered everything else-all the land of this continent; all the resources, all the hidden things of nature."Jung used the interview to address the American people, at a moment which he somehow recognized as crucial in the development of human civilization. America, the "tragic" country which he struggled to comprehend, would soon become the harbinger of …

The Scientific Validity Of Subjective Concepts In Models Of Animal Welfare, Françoise Wemelsfelder

Animal Welfare Collection

This paper takes a closer look at the subjectivity/objectivity relationship, as it plays a role in the science of animal welfare. It argues that subjective, experiential states in animals such as well-being and suffering are, contrary to what is often assumed, open to empirical observation and scientific assessment. The presumably purely private, inaccessible nature of such states is not an inherent property of these states, but derives from their misguided conception as ‘causal objects’ in mechanistic models of behaviour. This inevitably endows subjective experience with a ‘hidden’ status. However, subjective experience should be approached on its own conceptual grounds, i.e. …

A Study Of The Immune Effects Of Orally Ingested Ginseng Combined With Moderate High-Intensity Exercise In Mouse And Human Subjects, Gordon Hunter Pedersen

Biology

Ginseng, an extract of the Panax ginseng plant, and exercise producing a heart rate of 82.5% of maximum were studied alone and in combination for effects on certain immune parameters in mice and young adult humans, and on development of cytomegalovirus (CMV) disease in mice. A motorized treadmill was used in the mouse experiments, with a clinical pulse oximeter adapted to monitor heart rates and arterial oxygen saturation (SaO₂). Compared to infected controls whose death rate was 60%, orally administered ginseng (250 mg/kg/day) beginning 48 hours pre-CMV inoculation caused a 25% survivor increase. Exercise (six repetitions of running …

Genetic Markers And Duodenal Ulcer, Anjum Shahid, Sarwar J. Zuberi, Anwar Ali Siddiqui, Muhamined A. Waqar Muhamined A. Waqar Muhamined A. Waqar

Department of Biological & Biomedical Sciences

Serum pepsinogen, ui-antitrypsin (ui-AT) and blood groups were studied as genetic markets in 32 patients with endoscopically proven duodenal ulcer and 44 control subjects with no family history of ulcer disease. Serum pepsinogen was detennined by the modified method of Edward et al7, a1-AT by single radial hnmunodiffusion8 (RID) and phenotyping was carried out by isoelectric focusing (IEF)9. Duodenal ulcer patients with hyper- pepsinogenemia (28%) and low serum ui-AT (35%) had a dominant blood group 0, lower mean age, an early onset of disease, a higher frequency of gastrointestinal (CI) bleeding and ulcer perforation. These parameters were found considerably different …

Effect Of Ph, Fat Level, And Various Browning Agents On Composition, Color, Texture, And Sensory Characteristics Of Dark-Cutting Beef Patties, Igor V. Moiseev

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Extra lean (3.3% fat) and lean (20.0% fat) hamburgers in three pH groups (≤ 6.0; 6.01-6.49; 6.50-6.92) were evaluated for cooking-temperature profile, total process lethality, and physical properties after cooking to 71°C by double-side frying on an electric grill. Neither cooking-temperature profile nor cooking time was affected by hamburger fat content or pH. Double-side frying to 71.1°C internal temperature was adequate for more than 6-log destruction of viable E. coli O157:H7 and Salmonella at the geometrical center of extra lean and lean hamburgers. The coldest spot was on the circumferential surface, as indicated by the presence of a red ring …

The Annual Meeting Of The Iowa Academy Of Science April 25-26, 1997 [Program, 109th Meeting], Iowa Academy Of Science

Iowa Academy of Science Documents

Contents:

Program Summary --- 4
General Session Speakers --- 7
Awards --- 10
Symposia Programs --- 11
Poster Session --- 13
Map --- Center
Section Programs/Special Sessions --- 16
Agricultural Sciences --- 16
Anthropology --- 17
Botany --- 18
Cellular, Molecular, & Microbiology --- 19
Chemical Education --- 20
Chemistry : Inorganic , Physical , & Analytical --- 21
Chemistry : Organic & Biological --- 22
Conservation --- 23
Engineering --- 26
Geology --- 26
Physics --- 28
Physiology --- 29
Psychology/Linguistics --- 32
Science Teaching --- 32
Zoology --- 32
Local Arrangements Committee --- 34
Annual Meeting Committee --- …

Program Abstracts, 109th Session, Iowa Academy Of Science, April 25-26, 1997, Iowa Academy Of Science

Iowa Academy of Science Documents

Presentation abstracts from the annual meeting of the Iowa Academy of Science

Alterations In Human B Cell Calcium Homeostasis By Polycyclic Aromatic Hydrocarbons: Possible Associations With Cytochrome P450 Metabolism And Increased Tyrosine Phosphorylation, Barbara J. Mounho

Pharmaceutical Sciences ETDs

Polycyclic aromatic hydrocarbons (PAHs), are known immunotoxicants in animals, and are suspect toxins to the human immune system. The mechanism(s), however, by which PAHs exert immunosuppression have not been fully elucidated. Previous studies conducted in our laboratory have shown that PAHs, such as 7,12-dimethylbenz(a)- anthracene (DMB A) and benzo(a)pyrene (BaP) may exert their immunotoxic effects by altering intracellular calcium (Ca2+) homeostasis in lymphocytes. Intracellular Ca2+ is an important second messenger in the immune response, and the mobilization of Ca2+ is critical in the transduction of intracellular signals from the plasma membrane to the nucleus. The overall objective of this project …

The Asian Elephant: Ecology And Management, Robert H.I. Dale

Scholarship and Professional Work - LAS

Book review for the following title:

The Asian Elephant: Ecology and Management. By Raman Sukumar, Cambridge University Press, 1993, 282 pages. $34.95 hardcover

Y-Chromosome Effects On Drosophila Geotaxis Interact With Genetic Or Cytoplasmic Background, Scott F. Stoltenberg, Jerry Hirsch

Department of Psychology: Faculty Publications

Previously, all of the major fruit fly, Drosophila melanogaster, chromosomes (I, II, and III) have been shown to be associated with geotaxis, but the Y chromosome has not. Using two methods (back-crossing and chromosome substitution), Y chromosomes from lines that have evolved stable, extreme expressions of geotaxis were placed into different genetic and cytoplasmic backgrounds to test the resulting males for geotaxis. The results of the back-crossing do not support the interpretation of Y-chromosome effects on geotaxis. These tests do not have sufficient statistical power, however, to detect small genetic effects. In the chromosome substitution experiment, the geotaxis-line Y …

Predictors Of Social Physique Anxiety In Elite Female Youth Athletes, Jeffrey J. Martin, Hermann J. Engels, John C. Wirth, Kari L. Smith

Kinesiology, Health and Sport Studies

The purpose of this study was to examine predictors of social physique anxiety (SPA). SPA, self-esteem, body-esteem, public body consciousness (PBC) and percent body fat (%BF) were assessed with elite female youth athletes (N = 68) competing in either figure skating, soccer or gymnastics. Stepwise multiple regression analyses, controlling for BF%, accounted for 59% of the variance in SPA. Self-esteem entered first, and BF%, followed by body-esteem and PBC. The psychological variables accounted for 57% of the variance with self-esteem contributing the most (R square change = 45%). Contrary to previous research, BF% did not significantly contribute to SPA. …

Development Of Piagetian Object Permanence In A Grey Parrot (Psittacus Erithacus), Irene M. Pepperberg, Mark R. Willner, Lauren B. Gravitz

Sentience Collection

The authors evaluated the ontogenetic performance of a grey parrot (Psittacus erithacus) on object permanence tasks designed for human infants. Testing began when the bird was 8 weeks old, prior to fledging and weaning. Because adult grey parrots understand complex invisible displacements (I. M. Pepperberg & F. A. Kozak, 1986), the authors continued weekly testing until the current subject completed all of I. C. Uzgiris and J. Hunt's (1975) Scale 1 tasks. Stage 6 object permanence with respect to these tasks emerged at 22 weeks, after the bird had fledged but before it was completely weaned. Although the parrot progressed …

Effects Of Estrogen In A Place Preference Conditioning Paradigm Using Non-Sexual Social Interaction To Condition Female Rats, Timothy D. Maze

Theses, Dissertations and Capstones

Female Sprauge Dawley rats were used to determine if non-sexual social interaction could be used as a positive reinforcing stimulus in a place preference conditioning (PPC) paradigm. PPC is a commonly used paradigm to test the addictive properties of abused drugs, but has also been used to determine the positive effect of sexual activity and play in juvenile rats. Individually housed female rats were paired with group housed female rats or left isolated in a chamber for 15 minutes for positive or negative conditioning, respectively. Three different groups of rats were tested: intact, bilateral ovariectomized (OVX), and bilateral ovariectomized with …

An Immunomodulating Mycotoxin Interferes With The Development Of Autoimmune Diabetes In Diabetes-Prone Bb/Wor Rats, Honggang Liu

Theses, Dissertations and Capstones

Various fungal products have immunomodulating activity and some have been studied regarding prevention of transplantation rejection. Prior to this investigation, the mycotoxin, gliotoxin (GT), has never been investigated as an immunotherapeutic drug for autoimmune disease. GT is a fungal secondary metabolite and a member of the epipolythiodioxopiperazine (ETP) family which has been shown to inhibit phagocytosis, induction of cytolytic T cells and the proliferation of T cells following mitogen stimulation. GT also induces in vitro apoptosis in certain immune cell types. More importantly, GT exhibits selective activity towards cells of hemopoietic origin.

Autoimmune diseases are disorders caused by immune responses …

Book Review Of Clovis E. Semmes, Racism, Health, And Post-Industrialism: A Theory Of African-American Health, Jerry Haynes

RISK: Health, Safety & Environment (1990-2002)

Review of Clovis E. Semmes, Racism, Health, and Post-Industrialism: A Theory of African-American Health (Praeger Publishers 1996). About the author, acknowledgements, index, introduction, selected bibliography. LC-95-34440; ISBN 0-275-95428-5 [178 pp. Cloth $59.95, paper $18.95. 88 Post Road West, Westport CT 06881.]

Preference And Motivation Testing, David Fraser, Lindsay R. Matthews

Validation of Animal Experimentation Collection

Since the early 1970s, scientists have used preference tests (tests that require animals to choose between two or more different options or environments) as a means of answering questions about animal welfare. Preference tests have been used to establish animals' preferences for common housing options such as ambient temperature, illumination and preferred types of bedding and flooring; to improve the effectiveness of devices such as loading ramps and nest boxes; and to clarify how strongly animals avoid various aspects of confinement and methods of restraint.

To use preference research to answer questions about animal welfare, three issues need to be …

Language-Naive Chimpanzees (Pan Troglodytes) Judge Relations Between Relations In A Conceptual Matching-To-Sample Task, Roger K.R. Thompson, David L. Oden, Sarah T. Boysen

Sentience Collection

Three chimpanzees with a history of conditional and numeric token training spontaneously matched relations between relations under conditions of nondifferential reinforcement. Heretofore, this conceptual ability was demonstrated only in language-trained chimpanzees. The performance levels of the language-naive animals in this study, however, were equivalent to those of a 4th animal—Sarah—whose history included language training and analogical problem solving. There was no evidence that associative factors mediated successful performance in any of the animals. Prior claims of a profound disparity between language-trained and language-naive chimpanzees apparently can be attributed to prior experience with arbitrary tokens consistently associated with abstract relations and …

Harry F. Harlow And Animal Research: Reflection On The Ethical Paradox, John P. Gluck

Experimentation Collection

With respect to the ethical debate about the treatment of animals in biomedical and behavioral research, Harry F. Harlow represents a paradox. On the one hand, his work on monkey cognition and social development fostered a view of the animals as having rich subjective lives filled with intention and emotion. On the other, he has been criticized for the conduct of research that seemed to ignore the ethical implications of his own discoveries. The basis of this contradiction is discussed and propositions for current research practice are presented.