The Experts below are selected from a list of 285 Experts worldwide ranked by ideXlab platform
Shane K Maloney - One of the best experts on this subject based on the ideXlab platform.
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Orientation to solar radiation in black wildebeest connochaetes gnou
Journal of Comparative Physiology A-neuroethology Sensory Neural and Behavioral Physiology, 2005Co-Authors: Graeme Moss, Shane K Maloney, Duncan MitchellAbstract:We recorded the body axis Orientation of free-living black wildebeest relative to incident solar radiation and wind. Observations were made on three consecutive days, on six occasions over the course of 1 year, in a treeless, predominantly cloudless habitat. Frequency of Orientation parallel to incident solar radiation increased, and perpendicular to incident solar radiation decreased, as ambient dry-bulb temperature or solar radiation intensity increased, or wind speed decreased. We believe these changes were mediated via their effect on skin temperature. Parallel Orientation Behavior was more prominent when the wildebeest were standing without feeding than it was when they were feeding. We calculate that a black wildebeest adopting parallel Orientation throughout the diurnal period would absorb 30% less radiant heat than the same animal adopting perpendicular Orientation. Parallel Orientation was reduced at times when water was freely available, possibly reflecting a shift from Behavioral to autonomic thermoregulatory mechanisms. The use of Orientation Behavior by black wildebeest is well developed and forms part of the suite of adaptations that help them to maintain heat balance while living in a shadeless, often hot, environment.
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Orientation to solar radiation in black wildebeest connochaetes gnou a neuroethology sensory neural and Behavioral physiology
Journal of Comparative Physiology A-neuroethology Sensory Neural and Behavioral Physiology, 2005Co-Authors: Shane K Maloney, Graeme Moss, Duncan MitchellAbstract:We recorded the body axis Orientation of free-living black wildebeest relative to incident solar radiation and wind. Observations were made on three consecutive days, on six occasions over the course of 1 year, in a treeless, predominantly cloudless habitat. Frequency of Orientation parallel to incident solar radiation increased, and perpendicular to incident solar radiation decreased, as ambient dry-bulb temperature or solar radiation intensity increased, or wind speed decreased. We believe these changes were mediated via their effect on skin temperature. Parallel Orientation Behavior was more prominent when the wildebeest were standing without feeding than it was when they were feeding. We calculate that a black wildebeest adopting parallel Orientation throughout the diurnal period would absorb 30% less radiant heat than the same animal adopting perpendicular Orientation. Parallel Orientation was reduced at times when water was freely available, possibly reflecting a shift from Behavioral to autonomic thermoregulatory mechanisms. The use of Orientation Behavior by black wildebeest is well developed and forms part of the suite of adaptations that help them to maintain heat balance while living in a shadeless, often hot, environment.
Duncan Mitchell - One of the best experts on this subject based on the ideXlab platform.
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Orientation to solar radiation in black wildebeest connochaetes gnou
Journal of Comparative Physiology A-neuroethology Sensory Neural and Behavioral Physiology, 2005Co-Authors: Graeme Moss, Shane K Maloney, Duncan MitchellAbstract:We recorded the body axis Orientation of free-living black wildebeest relative to incident solar radiation and wind. Observations were made on three consecutive days, on six occasions over the course of 1 year, in a treeless, predominantly cloudless habitat. Frequency of Orientation parallel to incident solar radiation increased, and perpendicular to incident solar radiation decreased, as ambient dry-bulb temperature or solar radiation intensity increased, or wind speed decreased. We believe these changes were mediated via their effect on skin temperature. Parallel Orientation Behavior was more prominent when the wildebeest were standing without feeding than it was when they were feeding. We calculate that a black wildebeest adopting parallel Orientation throughout the diurnal period would absorb 30% less radiant heat than the same animal adopting perpendicular Orientation. Parallel Orientation was reduced at times when water was freely available, possibly reflecting a shift from Behavioral to autonomic thermoregulatory mechanisms. The use of Orientation Behavior by black wildebeest is well developed and forms part of the suite of adaptations that help them to maintain heat balance while living in a shadeless, often hot, environment.
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Orientation to solar radiation in black wildebeest connochaetes gnou a neuroethology sensory neural and Behavioral physiology
Journal of Comparative Physiology A-neuroethology Sensory Neural and Behavioral Physiology, 2005Co-Authors: Shane K Maloney, Graeme Moss, Duncan MitchellAbstract:We recorded the body axis Orientation of free-living black wildebeest relative to incident solar radiation and wind. Observations were made on three consecutive days, on six occasions over the course of 1 year, in a treeless, predominantly cloudless habitat. Frequency of Orientation parallel to incident solar radiation increased, and perpendicular to incident solar radiation decreased, as ambient dry-bulb temperature or solar radiation intensity increased, or wind speed decreased. We believe these changes were mediated via their effect on skin temperature. Parallel Orientation Behavior was more prominent when the wildebeest were standing without feeding than it was when they were feeding. We calculate that a black wildebeest adopting parallel Orientation throughout the diurnal period would absorb 30% less radiant heat than the same animal adopting perpendicular Orientation. Parallel Orientation was reduced at times when water was freely available, possibly reflecting a shift from Behavioral to autonomic thermoregulatory mechanisms. The use of Orientation Behavior by black wildebeest is well developed and forms part of the suite of adaptations that help them to maintain heat balance while living in a shadeless, often hot, environment.
Takashi Inoue - One of the best experts on this subject based on the ideXlab platform.
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dual lamellar crystal structure in poly vinylidene fluoride acrylic rubber blends and its biaxial Orientation Behavior
Polymer, 2006Co-Authors: Yongjin Li, Yuko Oono, Kazuo Nakayama, Hiroshi Shimizu, Takashi InoueAbstract:Abstract The miscibility for melt-mixed poly(vinylidene fluoride) (PVDF)/acrylic rubber (ACM) blends and the crystal morphology of PVDF in the blends were investigated over the whole composition ranges by dynamic mechanical analysis (DMA), wide-angle X-ray diffraction (WAXD), small-angle X-ray scattering (SAXS), and transmission electron microscopy (TEM). DMA measurements revealed that PVDF is miscible with ACM in ACM-rich system, and partially miscible in PVDF-rich system. Two kinds of PVDF lamellar structures with different long periods were detected by SAXS and TEM for the partially miscible blends. In the miscible system, only one kind of crystal lamellae with enlarged long period is found. The two kinds of lamellar structures in the blend show different Orientation Behavior during the uniaxial stretching to result in a biaxial Orientation. The lamellae with short long period are oriented vertical to the stretching direction, while those with large long period were found to be oriented parallel to the stretching direction.
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dual lamellar crystal structure in poly vinylidene fluoride acrylic rubber blends and its biaxial Orientation Behavior
Polymer, 2006Co-Authors: Yongjin Li, Yuko Oono, Kazuo Nakayama, Hiroshi Shimizu, Takashi InoueAbstract:Abstract The miscibility for melt-mixed poly(vinylidene fluoride) (PVDF)/acrylic rubber (ACM) blends and the crystal morphology of PVDF in the blends were investigated over the whole composition ranges by dynamic mechanical analysis (DMA), wide-angle X-ray diffraction (WAXD), small-angle X-ray scattering (SAXS), and transmission electron microscopy (TEM). DMA measurements revealed that PVDF is miscible with ACM in ACM-rich system, and partially miscible in PVDF-rich system. Two kinds of PVDF lamellar structures with different long periods were detected by SAXS and TEM for the partially miscible blends. In the miscible system, only one kind of crystal lamellae with enlarged long period is found. The two kinds of lamellar structures in the blend show different Orientation Behavior during the uniaxial stretching to result in a biaxial Orientation. The lamellae with short long period are oriented vertical to the stretching direction, while those with large long period were found to be oriented parallel to the stretching direction.
Yongjin Li - One of the best experts on this subject based on the ideXlab platform.
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dual lamellar crystal structure in poly vinylidene fluoride acrylic rubber blends and its biaxial Orientation Behavior
Polymer, 2006Co-Authors: Yongjin Li, Yuko Oono, Kazuo Nakayama, Hiroshi Shimizu, Takashi InoueAbstract:Abstract The miscibility for melt-mixed poly(vinylidene fluoride) (PVDF)/acrylic rubber (ACM) blends and the crystal morphology of PVDF in the blends were investigated over the whole composition ranges by dynamic mechanical analysis (DMA), wide-angle X-ray diffraction (WAXD), small-angle X-ray scattering (SAXS), and transmission electron microscopy (TEM). DMA measurements revealed that PVDF is miscible with ACM in ACM-rich system, and partially miscible in PVDF-rich system. Two kinds of PVDF lamellar structures with different long periods were detected by SAXS and TEM for the partially miscible blends. In the miscible system, only one kind of crystal lamellae with enlarged long period is found. The two kinds of lamellar structures in the blend show different Orientation Behavior during the uniaxial stretching to result in a biaxial Orientation. The lamellae with short long period are oriented vertical to the stretching direction, while those with large long period were found to be oriented parallel to the stretching direction.
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dual lamellar crystal structure in poly vinylidene fluoride acrylic rubber blends and its biaxial Orientation Behavior
Polymer, 2006Co-Authors: Yongjin Li, Yuko Oono, Kazuo Nakayama, Hiroshi Shimizu, Takashi InoueAbstract:Abstract The miscibility for melt-mixed poly(vinylidene fluoride) (PVDF)/acrylic rubber (ACM) blends and the crystal morphology of PVDF in the blends were investigated over the whole composition ranges by dynamic mechanical analysis (DMA), wide-angle X-ray diffraction (WAXD), small-angle X-ray scattering (SAXS), and transmission electron microscopy (TEM). DMA measurements revealed that PVDF is miscible with ACM in ACM-rich system, and partially miscible in PVDF-rich system. Two kinds of PVDF lamellar structures with different long periods were detected by SAXS and TEM for the partially miscible blends. In the miscible system, only one kind of crystal lamellae with enlarged long period is found. The two kinds of lamellar structures in the blend show different Orientation Behavior during the uniaxial stretching to result in a biaxial Orientation. The lamellae with short long period are oriented vertical to the stretching direction, while those with large long period were found to be oriented parallel to the stretching direction.
Graeme Moss - One of the best experts on this subject based on the ideXlab platform.
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Orientation to solar radiation in black wildebeest connochaetes gnou
Journal of Comparative Physiology A-neuroethology Sensory Neural and Behavioral Physiology, 2005Co-Authors: Graeme Moss, Shane K Maloney, Duncan MitchellAbstract:We recorded the body axis Orientation of free-living black wildebeest relative to incident solar radiation and wind. Observations were made on three consecutive days, on six occasions over the course of 1 year, in a treeless, predominantly cloudless habitat. Frequency of Orientation parallel to incident solar radiation increased, and perpendicular to incident solar radiation decreased, as ambient dry-bulb temperature or solar radiation intensity increased, or wind speed decreased. We believe these changes were mediated via their effect on skin temperature. Parallel Orientation Behavior was more prominent when the wildebeest were standing without feeding than it was when they were feeding. We calculate that a black wildebeest adopting parallel Orientation throughout the diurnal period would absorb 30% less radiant heat than the same animal adopting perpendicular Orientation. Parallel Orientation was reduced at times when water was freely available, possibly reflecting a shift from Behavioral to autonomic thermoregulatory mechanisms. The use of Orientation Behavior by black wildebeest is well developed and forms part of the suite of adaptations that help them to maintain heat balance while living in a shadeless, often hot, environment.
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Orientation to solar radiation in black wildebeest connochaetes gnou a neuroethology sensory neural and Behavioral physiology
Journal of Comparative Physiology A-neuroethology Sensory Neural and Behavioral Physiology, 2005Co-Authors: Shane K Maloney, Graeme Moss, Duncan MitchellAbstract:We recorded the body axis Orientation of free-living black wildebeest relative to incident solar radiation and wind. Observations were made on three consecutive days, on six occasions over the course of 1 year, in a treeless, predominantly cloudless habitat. Frequency of Orientation parallel to incident solar radiation increased, and perpendicular to incident solar radiation decreased, as ambient dry-bulb temperature or solar radiation intensity increased, or wind speed decreased. We believe these changes were mediated via their effect on skin temperature. Parallel Orientation Behavior was more prominent when the wildebeest were standing without feeding than it was when they were feeding. We calculate that a black wildebeest adopting parallel Orientation throughout the diurnal period would absorb 30% less radiant heat than the same animal adopting perpendicular Orientation. Parallel Orientation was reduced at times when water was freely available, possibly reflecting a shift from Behavioral to autonomic thermoregulatory mechanisms. The use of Orientation Behavior by black wildebeest is well developed and forms part of the suite of adaptations that help them to maintain heat balance while living in a shadeless, often hot, environment.