| Records |
| Author |
Connor, R. C.; Smokler, R. A.; Richards, A. F. |
| Title |
Dolphin alliances and coalitions |
Type |
Book Chapter |
| Year |
1992 |
Publication |
Coalitions and Alliances in Humans and Other Animals |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
415-443 |
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| Publisher |
Oxford University Press |
Place of Publication |
Oxford |
Editor |
Harcourt, A.H.;de Waal, F.B.M. |
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no |
Call Number  |
Equine Behaviour @ team @ |
Serial |
5238 |
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| Author |
Romano, N.; Vitale, F.; Alesi, D.R.; Bonura, F.; La Licata, R.; Intonazzo, V.; Dardanoni, G.; Mammina, C. |
| Title |
The changing pattern of human immunodeficiency virus type 1 infection in intravenous drug users. Results of a six-year seroprevalence study in Palermo, Italy |
Type |
Journal Article |
| Year |
1992 |
Publication |
American Journal of Epidemiology |
Abbreviated Journal |
Am J Epidemiol |
| Volume |
135 |
Issue |
11 |
Pages |
1189-1196 |
| Keywords |
Acquired Immunodeficiency Syndrome/*epidemiology; Adolescent; Adult; Chi-Square Distribution; Cross-Sectional Studies; Female; HIV Antibodies/blood; HIV Infections/*epidemiology; HIV Seroprevalence/*trends; *Hiv-1; Hepatitis B Antibodies/blood; Hepatitis B Surface Antigens/blood; Heroin; Humans; Incidence; Italy/epidemiology; Logistic Models; Male; Multivariate Analysis; Odds Ratio; Prevalence; Risk Factors; Substance Abuse, Intravenous/*epidemiology; Time Factors |
| Abstract |
A cross-sectional seroepidemiologic study was carried out between 1985 and 1990 in 1,567 heterosexual intravenous drug users who had been seen at the AIDS Regional Reference Center in Palermo, Italy, to evaluate the rate of human immunodeficiency virus type 1 (HIV-1) seroprevalence in this group and its long-term trend. Sixty serum samples collected from drug users in 1980 and 1983, before the founding of the Center (1985), were tested as well. Some demographic and behavioral risk factors were studied in a subgroup of intravenous drug users enrolled in 1985, 1987, and 1990 for their possible association with HIV-1. These factors were also studied in relation to hepatitis B virus infection, since both viruses share the same modes of spread. These drug users had a higher prevalence of markers for hepatitis B virus than of HIV-1 antibodies, and the prevalence rates in sera collected declined over time for both infections. The presence of both antibodies to HIV-1 and markers for hepatitis B virus was independently associated with the age of the drug user, the duration of drug use, and the year of serum collection. Antibodies to HIV-1 were observed more frequently in females than in males. No relation was found between education or employment status and the presence of HIV-1 antibodies or hepatitis B virus markers. Although new HIV-1 infections still occur, the decline in seroprevalence observed at the end of the 1980s might be related to modifications in social behavior among newer drug users, partial exhaustion of the susceptible population, and increasing risk awareness in more experienced users. |
| Address |
Giuseppe D'Alessandro Department of Hygiene and Microbiology, School of Medicine, University of Palermo, Italy |
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English |
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| ISSN |
0002-9262 |
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| Notes |
PMID:1626537 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
5258 |
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| Author |
Noë, R. |
| Title |
Alliance formation among male hamadryas baboons: shopping for profitable partners |
Type |
Book Chapter |
| Year |
1992 |
Publication |
Coalitions and alliances in humans and other animals |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
284-321 |
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| Publisher |
Oxford University Press |
Place of Publication |
Oxford |
Editor |
Harcourt, A.H.; deWaal, F.B.M. |
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no |
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Equine Behaviour @ team @ |
Serial |
5405 |
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| Author |
Harcourt, A. H. |
| Title |
Coalitions and alliances: are primates more complex than non-primates? |
Type |
Book Chapter |
| Year |
1992 |
Publication |
Coalitions and alliances in humans and other animals |
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Issue |
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Pages |
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| Publisher |
Oxford University Press |
Place of Publication |
Oxford |
Editor |
Harcourt, A.H.; de Waal, F.B.M. |
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ISBN |
0-19-854273-9 |
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Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
5440 |
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| Author |
Whiten, A.; Ham, R. |
| Title |
On the nature and evolution of imitation in the animal kingdom: reappraisal of a century of research. |
Type |
Journal Article |
| Year |
1992 |
Publication |
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Abbreviated Journal |
Adv. Study Behav. |
| Volume |
21 |
Issue |
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Pages |
239-283 |
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no |
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Equine Behaviour @ team @ |
Serial |
5599 |
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| Author |
Covalesky, M.E.; Russoniello, C.R.; Malinowski, K. |
| Title |
Effects of show-jumping performance stress on plasma cortisol and lactate concentrations and heart rate and behavior in horses |
Type |
Journal Article |
| Year |
1992 |
Publication |
Journal of Equine Veterinary Science |
Abbreviated Journal |
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| Volume |
12 |
Issue |
4 |
Pages |
244-251 |
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| Abstract |
Summary Effects of show jumping competition on stress levels in horses was examined. Twenty-six homes were sampled in both show and farm environments from three levels of show experience schooling, (least experience, n=11); intermediate, (moderate experience, n=6); open, (most experience, n=9). Blood samples were taken at 6 time points; 3 at the horse show and 3 at the home farm (baseline at rest, pre-schooling and post-performance over a jump course). Stress responses were assessed through comparison of the behavioral response of the horses (determined by a subjective scoring system) to plasma cortisol (F) concentrations. Physical exertion was evaluated by heart rate (HR) and plasma lactate (L) concentrations. Schooling jumpers displayed higher baseline F concentrations than open jumpers (83g±9.2 vs 46.4±10.2 ng/ml, respectively; p<.05); but not when compared to intermediate jumpers (66.2 ± 13.7 ng/ml; p>.05) at the horse show. At the farm, there were no differences in F concentrations between experience levels at a time point (p<.05). Least experienced horses displayed higher F values at rest at the show compared to the home farm. At the show, open jumpers had higher L concentrations post-exercise compared to intermediate horses (40.3±3.4 vs 25.5±4.0 mg/dL, respectively; p<.05); but were not different compared to schooling jumpers (34.8±2.0 mg/dL; p>.05). There were no differences in heart rates or behavior score between experience levels at specific time points at either the show or farm (p>.05). Low positive correlations were found between HR and F (r=.24, p<.05); HR and L (r-.48, p<.05); and HR and behavior (r=.22, p<.05). Results suggest that conditioned jumpers that have previously been exposed to horse show environments do not appear stressed during acute show-jumping competition. |
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| ISSN |
0737-0806 |
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Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
5622 |
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| Author |
Clark, M.L.; Ayers, M. |
| Title |
Friendship similarity during early adolescence: gender and racial patterns |
Type |
Journal Article |
| Year |
1992 |
Publication |
The Journal of Psychology |
Abbreviated Journal |
J Psychol |
| Volume |
126 |
Issue |
4 |
Pages |
393-405 |
| Keywords |
Achievement; Adolescent; African Americans/*psychology; *Cross-Cultural Comparison; Female; *Gender Identity; Humans; Individuality; *Interpersonal Relations; Male; *Personality Development; Personality Inventory; Sociometric Techniques |
| Abstract |
We studied the relationship of reciprocity, gender, and racial composition (Caucasian, African American, cross-race) of adolescent friendship dyads to similarity and proximity in 136 young adolescents. We found that adolescents selected friends who were of the same gender and race and that female dyads were more similar than male dyads on verbal achievement and several personality dimensions. Caucasian dyads were more similar than African American dyads on verbal achievement, mental alertness, and dominance. African American adolescents had more contact with their best friends outside school, whereas Caucasian adolescent friends had more in-school contact. African American students had fewer reciprocal relationships than the Caucasian students. Cross-race friendships were less reciprocal than same-race friendships. Race and gender were important in determining friendship patterns. Similarity and proximity were more important than reciprocity in understanding early adolescent friendships. |
| Address |
Department of Psychology, Virginia Commonwealth University |
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English |
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| ISSN |
0022-3980 |
ISBN |
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| Notes |
PMID:1403972 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
5628 |
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| Author |
Duncan P, |
| Title |
Zebras, asses, and horses |
Type |
Book Whole |
| Year |
1992 |
Publication |
Kelvyn Press USA |
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| Abstract |
Provides summaries of the conservation status, biology, and ecology of wild zebras, asses, and horses. The Action Plan presents chapters on taxonomy, genetics, reproductive biology, population dynamics, management, disease and epidemiology, and the importance of developing an assessment methodology that considers the role of equids in ecosystems. |
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Kelvyn Press |
Place of Publication |
Broadview, Illinois |
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ISBN |
978-2831700564 |
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| Notes |
from Professor Hans Klingels Equine Reference List JA - |
Approved |
yes |
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Serial |
1032 |
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| Author |
Elzenga, J. W, |
| Title |
Why zebras are striped |
Type |
Journal Article |
| Year |
1992 |
Publication |
Swara |
Abbreviated Journal |
Swara |
| Volume |
15 |
Issue |
4 |
Pages |
28-30 |
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| Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
yes |
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Serial |
1068 |
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| Author |
Winkler A, |
| Title |
The feeding ecology of the Cape Mountain zebra in the Mountain Zebra National Park |
Type |
Manuscript |
| Year |
1992 |
Publication |
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Issue |
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Thesis |
Doctoral thesis |
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| Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
yes |
| Call Number |
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Serial |
1713 |
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