Results 161 to 170 of about 1,014 (217)
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Bond-bond pair calculations of rotational barriers
Chemical Physics Letters, 1985Ab initio STO-3G calculations of rotation barriers in six single-rotor molecules have shown the inadequacy of the Mulliken approximation in the Surjan formula which expresses barriers as a sum of bond-bond pair interactions. Following our early work, expansion to order S2 followed by pair delocalization is suggested as a possible alternative to semi ...
V. Magnasco +3 more
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Anatomy and neurochemistry of the pair bond
Journal of Comparative Neurology, 2005AbstractStudies in monogamous rodents have begun to elucidate the neural circuitry underlying the formation and maintenance of selective pair bonds between mates. This research suggests that at least three distinct, yet interconnected, neural pathways interact in the establishment of the pair bond.
Larry J, Young +2 more
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The Neurochemistry of Pair Bonding
Current Directions in Psychological Science, 2003The formation and maintenance of social attachments are fundamental to human biology. Because deficits in the ability to form such attachments are associated with a variety of psychological disorders, an understanding of the neural basis of social attachment may provide insights into the causes of such disorders.
J. Thomas Curtis, Zuoxin Wang
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Sexual Selection in Pair-Bonding Versus Non Pair-Bonding Rodents
2022Energy investment in the production of offspring is gender dependent in rodent populations. Females expend more energy than do males, thus males must engage in competition to be considered by females, giving females the opportunity to select the fittest male.
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2015
Pair bonding is an exclusive mating relationship associating the memory of a mate with the potential successful completion of a breeding cycle. In evolutionary biology, pair bonding has been studied as a mating strategy and this biological phenomenon has been associated with survival related reproductive behaviors, however, behaviors that function in ...
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Pair bonding is an exclusive mating relationship associating the memory of a mate with the potential successful completion of a breeding cycle. In evolutionary biology, pair bonding has been studied as a mating strategy and this biological phenomenon has been associated with survival related reproductive behaviors, however, behaviors that function in ...
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Canadian Journal of Zoology, 1984
The three North American ptarmigan species are monogamous, whereas the other six North American grouse species are polygynous. In the Arctic there are few nest predators, which means ptarmigan should be prepared to nest nearer each other than polygynous grouse that lose more nests to predators.
A. T. Bergerud, D. H. Mossop
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The three North American ptarmigan species are monogamous, whereas the other six North American grouse species are polygynous. In the Arctic there are few nest predators, which means ptarmigan should be prepared to nest nearer each other than polygynous grouse that lose more nests to predators.
A. T. Bergerud, D. H. Mossop
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Facial expressions and pair bonds in hylobatids
American Journal of Physical Anthropology, 2018AbstractObjectivesFacial expressions are an important component of primate communication that functions to transmit social information and modulate intentions and motivations. Chimpanzees and macaques, for example, produce a variety of facial expressions when communicating with conspecifics.
Brittany Florkiewicz +2 more
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American Journal of Primatology, 2020
AbstractOnly a handful of primate species exhibit the social relationship of pair‐bonding. Efficient communication is critical for behavioral coordination within pair‐bonds to maintain proximity and respond appropriately to extra‐pair individuals, and possibly coordinate infant care.
Britt Singletary, Stacey Tecot
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AbstractOnly a handful of primate species exhibit the social relationship of pair‐bonding. Efficient communication is critical for behavioral coordination within pair‐bonds to maintain proximity and respond appropriately to extra‐pair individuals, and possibly coordinate infant care.
Britt Singletary, Stacey Tecot
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Human male pair bonding and testosterone
Human Nature, 2004Previous research in North America has supported the view that male involvement in committed, romantic relationships is associated with lower testosterone (T) levels. Here, we test the prediction that undergraduate men involved in committed, romantic relationships (paired) will have lower T levels than men not involved in such relationships (unpaired).
Peter B, Gray +5 more
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Halogen Bonding in DNA Base Pairs
Journal of the American Chemical Society, 2012Halogen bonding (R-X···Y) is a qualitative analogue of hydrogen bonding that may prove useful in the rational design of artificial proteins and nucleotides. We explore halogen-bonded DNA base pairs containing modified guanine, cytosine, adenine and thymine nucleosides. The structures and stabilities of the halogenated systems are compared to the normal
Anna J, Parker +3 more
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