| Records |
| Author |
Boesch C; Boesch H |
| Title |
Possible causes of sex differences in the use of natural hammers by wild chimpanzees |
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Journal Article |
| Year |
1984 |
Publication |
J. Hum. Evol. |
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| Volume |
13 |
Issue |
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Pages |
415 |
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Equine Behaviour @ team @ |
Serial |
2981 |
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| Author |
Boesch C; Boesch H |
| Title |
Mental maps in wild chimpanzees: an analysis of hammer transports for nut cracking |
Type |
Journal Article |
| Year |
1984 |
Publication |
Primates |
Abbreviated Journal |
Primates |
| Volume |
25 |
Issue |
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Pages |
160 |
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Equine Behaviour @ team @ |
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2982 |
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| Author |
Cho, K.C.; Chan, K.K. |
| Title |
Kinetics of cold-induced denaturation of metmyoglobin |
Type |
Journal Article |
| Year |
1984 |
Publication |
Biochimica et Biophysica Acta (BBA) – Protein Structure and Molecular Enzymology |
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| Volume |
786 |
Issue |
1-2 |
Pages |
103-108 |
| Keywords |
Metmyoglobin denaturation; Temperature jump; Denaturation kinetics; Conformational transformation; (Horse heart) |
| Abstract |
Using a slow temperature-jump spectrophotometer, we have studied the kinetics of cold-induced denaturation of metmyoglobin between 0[degree sign]C and 20[degree sign]C at acidic pH. The time-scale of the transition is slow and is of the order of minutes. The results are consistent with the transition's involving a total of three states, native (N), transient intermediate (I) and denatured (D), which are converted from one to the other in that order. |
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no |
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refbase @ user @ |
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3978 |
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| Author |
Dunbar, K.; MacLeod, C.M. |
| Title |
A horse race of a different color: Stroop interference patterns with transformed words |
Type |
Journal Article |
| Year |
1984 |
Publication |
Journal of Experimental Psychology. Human Perception and Performance |
Abbreviated Journal |
J Exp Psychol Hum Percept Perform |
| Volume |
10 |
Issue |
5 |
Pages |
622-639 |
| Keywords |
*Attention; *Color Perception; Discrimination Learning; Humans; Orientation; Reaction Time; Reading; *Semantics |
| Abstract |
Four experiments investigated Stroop interference using geometrically transformed words. Over experiments, reading was made increasingly difficult by manipulating orientation uncertainty and the number of noncolor words. As a consequence, time to read color words aloud increased dramatically. Yet, even when reading a color word was considerably slower than naming the color of ink in which the word was printed, Stroop interference persisted virtually unaltered. This result is incompatible with the simple horse race model widely used to explain color-word interference. When reading became extremely slow, a reversed Stroop effect--interference in reading the word due to an incongruent ink color--appeared for one transformation together with the standard Stroop interference. Whether or not the concept of automaticity is invoked, relative speed of processing the word versus the color does not provide an adequate overall explanation of the Stroop phenomenon. |
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0096-1523 |
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| Notes |
PMID:6238123 |
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no |
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Equine Behaviour @ team @ |
Serial |
4065 |
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| Author |
Wolski, K. |
| Title |
Equine behaviour, patterns, types, and causes |
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Journal Article |
| Year |
1984 |
Publication |
Vet Technician |
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| Volume |
5 |
Issue |
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Pages |
250-258 |
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Cited By (since 1996): 3; Export Date: 21 October 2008 |
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no |
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Equine Behaviour @ team @ |
Serial |
4550 |
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| Author |
Andersson, M. |
| Title |
Producers and Scroungers |
Type |
Miscellaneous |
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1984 |
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no |
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Equine Behaviour @ team @ |
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4879 |
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| Author |
Teas, J. |
| Title |
Female Primates: Studies by Women Primatologists |
Type |
Miscellaneous |
| Year |
1984 |
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no |
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Equine Behaviour @ team @ |
Serial |
4897 |
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| Author |
Keiper, R.; Houpt, K. |
| Title |
Reproduction in feral horses: an eight-year study |
Type |
Journal Article |
| Year |
1984 |
Publication |
American journal of veterinary research |
Abbreviated Journal |
Am J Vet Res |
| Volume |
45 |
Issue |
5 |
Pages |
991-995 |
| Keywords |
Abortion, Veterinary/epidemiology; Anestrus; Animal Population Groups/*physiology; Animals; Animals, Wild/*physiology; Birth Rate; Female; Fertility; Horse Diseases/epidemiology; Horses/*physiology; Lactation; Male; Maryland; Pregnancy; *Reproduction; Seasons; Sex Ratio; Virginia |
| Abstract |
The reproductive rate and foal survival of the free-ranging ponies on Assateague Island National Seashore were studied for 8 years, 1975 to 1982. Most (52%) of the 86 foals were born in May, 13% were born in April, 22.6% in June, 10.4% in July, and less than 1% in August and September. The mean foaling rate was 57.1 +/- 3.9% and the survival rate was 88.3 +/- 3.6%. Forty-eight colts and 55 fillies were born (sex ratio 53% female). Mares less than 3 years old did not foal and the foaling rate of 3-year-old mares was only 23%, that of 4-year-old mares was 46%, that of 5-year-old mares was 53%, and 6-year-old mares was 69%. The relatively poor reproduction rate was believed to be a consequence of the stress of lactating while carrying a foal when forage quality on the island was low. The hypothesis was supported by the higher reproductive rate (74.4 +/- 2.4%) of the ponies in the Chincoteague National Wildlife Refuge on the southern part of the island. Their foals are weaned and sold in July each year. Despite the low reproductive rate on Assateague Island National Seashore , the number of ponies increased from 43 to 80, a 90% increase in the 8-year period or greater than 10%/yr. There were 24 deaths and 8 dispersals from the study area. |
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English |
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0002-9645 |
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| Notes |
PMID:6732036 |
Approved |
no |
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refbase @ user @ |
Serial |
665 |
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| Author |
Seyfarth, R.M.; Cheney, D.L. |
| Title |
Grooming, alliances and reciprocal altruism in vervet monkeys |
Type |
Journal Article |
| Year |
1984 |
Publication |
Nature |
Abbreviated Journal |
Nature |
| Volume |
308 |
Issue |
5959 |
Pages |
541-543 |
| Keywords |
*Altruism; Animals; Cercopithecus/*physiology; Cercopithecus aethiops/*physiology; *Grooming; *Social Behavior; Vocalization, Animal |
| Abstract |
Reciprocal altruism refers to the exchange of beneficial acts between individuals, in which the benefits to the recipient exceed the cost to the altruist. Theory predicts that cooperation among unrelated animals can occur whenever individuals encounter each other regularly and are capable of adjusting their cooperative behaviour according to experience. Although the potential for reciprocal altruism exists in many animal societies, most interactions occur between closely related individuals, and examples of reciprocity among non-kin are rare. The field experiments on vervet monkeys which we present here demonstrate that grooming between unrelated individuals increases the probability that they will subsequently attend to each others' solicitations for aid. Vervets appear to be more willing to aid unrelated individuals if those individuals have behaved affinitively toward them in the recent past. In contrast, recent grooming between close genetic relatives appears to have no effect on their willingness to respond to each other's solicitations for aid. |
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0028-0836 |
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PMID:6709060 |
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no |
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refbase @ user @ |
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704 |
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| Author |
Bard J, |
| Title |
Perch la zebra In:Kos;Revista di Cultura e Storia della |
Type |
Journal Article |
| Year |
1984 |
Publication |
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Abbreviated Journal |
Sci Med, Nat e Humane |
| Volume |
1 |
Issue |
6 |
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| Notes |
from Professor Hans Klingels Equine Reference List |
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no |
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Serial |
922 |
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