نتایج جستجو برای: malefemale
تعداد نتایج: 15 فیلتر نتایج به سال:
Pamela Oliver received her B.A. in sociology from Stanford University and her M.A. from the University of North Carolina, Chapel Hill, in 1972. She is currently working on her Ph.D. at North Carolina. Her major interest is developing exchange theory so that it can apply to inter-group relations, focusing on unbalanced power relations. She is also interested in evolutionary theory, family sociol...
(Received 21 August 1990; accepted for publication 29 November 1991) The first three formants of the ten Korean monophthongs were studied. The vowels were produced by 20 male and female speakers in an |hVd A | (V = vowel) context. Then the malefemale variations in the Korean formant data were examined. The uniform scaling method resulted in less than a 6% difference between the scaled and refer...
To evaluate the potential of using nesting material as a medium for avicide delivery, five organophosphates (Dasanit*, Volaton®, fenthion, parathion, and Cyanophos*) were tested on small groups of paired malefemale quelea (n = 4 to 9). Toxicants were presented to each pair of birds on five 13-cm strands of cotton string after a preliminary screening for male nest weaving behavior. Tested concen...
In order to explain the variation in primate social systems, socio-ecology has focussed on the role of ecological factors to explain female associations and relationships and on the spatio-temporal distribution of mating opportunities to explain male associations and relationships. While this approach has been quite successful, it ignores male-female associations and relationships and ignores t...
Background/Objective: Foreign body in the esophagus is a common emergency presentation. Conventional x-ray imaging is usually obtained to aid the diagnosis during the initial evaluation. The decision for surgical intervention is usually based on a suspicious history, physical examination and radiologic findings. Our hypothesis is that radiographic imaging should not alter the decision for surgi...
In 1954 Papillon-Leage and Psaume (I954a, b) described 8 patients with a syndrome characterized by congenital anomalies of the face, oral cavity, and digits. Since then, several groups of patients have been reported (Gorlin, Anderson, and Scott, I96I; Ruess, Pruzansky, Lis, and Patau, I962; Gorlin and Psaume, I962; Kaplan, Vaharu, Voorhess, and Gardner, I962; Kushnick, Massa, and Baukema, I963;...
Dominance is supposed to be associated with many benefits, such as priority of access to food, safe locations, and sexual partners. It is accordingly thought to be of central importance in primate behavior. Since most primates live permanently in bi-sexual groups, the dominance position of an individual depends on social skills with both males and females. It therefore comes as a surprise that ...
Le Médecin de famille canadien Vol 55: january • janVier 2009 Admittedly, the concept of nurse practitioners is not new. As my colleague states, these professionals were originally created in an attempt to address the shortage of physicians, a shortage that in my view persists. Nurse practitioners have not been a panacea for this problem, which is undermining our profession. She also notes that...
T he specificity and sensitivity involved in moth sex pheromone communication are remarkable and renowned Males are exquisitely sensitive and narrowly tuned to the female-emitted conspecific sex pheromone blend, which usually consists of two or three components (1, 2) Slight changes in the ratios of these components can shut off the upwind flight attraction response of males of one species and ...
Explanations for the evolution of male-female bonds originally emphasized the apparent importance of reproductive context, or mating system. Durable ‘‘pair bonds’’ were regarded as typical, or even diagnostic of monogamous species3 such as Asian gibbons (Hylobates spp.)4 and neotropical titi monkeys (Callicebus spp.).5 On the other hand, polygynous monkeys such as guenons (Cercopithecus spp.)6 ...
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