Results 161 to 170 of about 5,943 (216)
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American Journal of Physical Anthropology, 1980
AbstractHuman and chimpanzee locomotor behaviors are described and compared using field patterns derived from measurements of the motions at the joints. Field patterns of human and ape bipedalism are so different that it is doubted whether the nonhuman type could ever have been a precursor of the human type. Chimpanzee quadrupedal vertical climbing and
exaly +3 more sources
AbstractHuman and chimpanzee locomotor behaviors are described and compared using field patterns derived from measurements of the motions at the joints. Field patterns of human and ape bipedalism are so different that it is doubted whether the nonhuman type could ever have been a precursor of the human type. Chimpanzee quadrupedal vertical climbing and
exaly +3 more sources
Nutrition and Health, 1993
Reasons why mammalian bipedalism is so rare. Problems encountered by the larger arboreal mammals when they descend to ground level. Reasons for believing that hominid ancestors were never knuckle-walkers. Primate models which combine arboreal life with incipient bipedalism. Disadvantages of mammalian bipedalism.
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Reasons why mammalian bipedalism is so rare. Problems encountered by the larger arboreal mammals when they descend to ground level. Reasons for believing that hominid ancestors were never knuckle-walkers. Primate models which combine arboreal life with incipient bipedalism. Disadvantages of mammalian bipedalism.
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Science, 1987
In the letter "Tanker 'dumping' regulations" by T. S. Wyman (5 June, p. 1160), the years of amendations to the International Convention for the Prevention of Pollution from Ships, 1973, mentioned in the second paragraph, were incorrect. The amendations were made in 1978, 1984, and 1985 (not 1987).
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In the letter "Tanker 'dumping' regulations" by T. S. Wyman (5 June, p. 1160), the years of amendations to the International Convention for the Prevention of Pollution from Ships, 1973, mentioned in the second paragraph, were incorrect. The amendations were made in 1978, 1984, and 1985 (not 1987).
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Nanoscale, 2018
A DNA bipedal walker shows stride-controlled gait switch and direction reversal.
Y. H. Chiang +6 more
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A DNA bipedal walker shows stride-controlled gait switch and direction reversal.
Y. H. Chiang +6 more
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Proceedings of the Royal Society of London. B. Biological Sciences, 1990
Human-like running is a natural dynamic mode of a simple mechanical biped. Such a machine consists of two telescoping legs with linear springs, connected by a hip joint with a torsional spring. It will run passively; no pattern of forcing is required to generate the gait. With careful design its energy consumption can approach zero, but in any case the
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Human-like running is a natural dynamic mode of a simple mechanical biped. Such a machine consists of two telescoping legs with linear springs, connected by a hip joint with a torsional spring. It will run passively; no pattern of forcing is required to generate the gait. With careful design its energy consumption can approach zero, but in any case the
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Acitretin induced bipedal edema
The Journal of Dermatology, 2006ABSTRACTGeneralized edema has been reported to be a rare side effect of systemic retinoids. We report a patient who developed localized bipedal edema from acitretin. Other causes of bipedal edema were excluded and withdrawal of acitretin led to resolution of the edema.
Hong Liang, Tey, Thiam Seng Colin, Theng
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Cursoriality in bipedal archosaurs
Nature, 2000Modern birds have markedly foreshortened tails and their body mass is centred anteriorly, near the wings. To provide stability during powered flight, the avian centre of mass is far from the pelvis, which poses potential balance problems for cursorial birds.
T D, Jones +4 more
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Science, 2000
A 290-million-year-old reptilian skeleton from the Lower Permian (Asselian) of Germany provides evidence of abilities for cursorial bipedal locomotion, employing a parasagittal digitigrade posture. The skeleton is of a small bolosaurid, Eudibamus cursoris , gen. et sp. nov .
D S, Berman +5 more
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A 290-million-year-old reptilian skeleton from the Lower Permian (Asselian) of Germany provides evidence of abilities for cursorial bipedal locomotion, employing a parasagittal digitigrade posture. The skeleton is of a small bolosaurid, Eudibamus cursoris , gen. et sp. nov .
D S, Berman +5 more
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1994
Abstract One factor contributing to the bafflement is the lack of a parallel to human bipedalism. Other modes of mammalian locomotion, such as hopping, gliding, swimming, bur rowing through the earth or flying through the air, have evolved over and over again, in separate species often totally unrelated to one another.
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Abstract One factor contributing to the bafflement is the lack of a parallel to human bipedalism. Other modes of mammalian locomotion, such as hopping, gliding, swimming, bur rowing through the earth or flying through the air, have evolved over and over again, in separate species often totally unrelated to one another.
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