Physical Anthropology of the Angami Nagas (Nagaland, India)

Seth, P.K.; Seth, Swadesh

doi:10.1515/9783110800043.325

Cited by 2 publications

(2 citation statements)

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“…8 A higher lipid solubility and a larger percentage of drug in the unionized state facilitate transfer across the blood-brain barrier. 9 A poor association between plasma hydromorphone concentrations and analgesic effect has also been documented. 10 There appears to be a delay of 10 to 20 minutes between peak plasma concentration and maximum analgesic effect, and it is postulated to be because of the low lipid solubility of hydromorphone, resulting in a lag time in penetrating the blood-brain barrier.…”

Section: Pk-pd Characteristics Of Morphine Hydromorphone and Fentanylmentioning

confidence: 99%

Opioid Pharmacokinetics-Pharmacodynamics

2016

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Section: Pk-pd Characteristics Of Morphine Hydromorphone and Fentanylmentioning

confidence: 99%

Opioid Pharmacokinetics-Pharmacodynamics

2016

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“…Aggami Nagas, India (MF) Set and Set (1978) Arora, North India (MF) Kalla (1969) Williams-Blangero and Blangero (1991) Tibet (MF) Kalla and Tiwari (1970) …”

Section: South Asiamentioning

confidence: 99%

Hemispheric difference in human skin color

Relethford

1997

Am. J. Phys. Anthropol.

110

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Previous studies of human skin color have shown a strong relationship between skin color and distance from the equator, which has been interpreted as a link between skin color, latitude, and the intensity of ultraviolet radiation. The underlying assumptions are that UV radiation is greatest at the equator and that it diminishes with increasing latitude to the same extent in both the Northern and Southern Hemispheres. The standard analysis of human skin color is based on these assumptions, such that skin color is assumed to be darkest at the equator, and the decrease of skin color with latitude is assumed to be the same in both hemispheres. A nonlinear piecewise regression model was developed to test these assumptions and applied to mean skin reflectance data from 102 male samples and 65 female samples from across the Old World. For both males and females, skin reflectance (%) is lowest at the equator (darkest skin). Among males, skin reflectance increases roughly 8.2% for every 10 degrees of latitude in the Northern Hemisphere but only 3.3% for every 10 degrees of latitude in the Southern Hemisphere. Among females, the corresponding numbers are 8.1% in the Northern Hemisphere and 4.7% in the Southern Hemisphere. These results indicate that human skin color is darker in the Southern Hemisphere than in the Northern Hemisphere at equivalent latitude. Recent research shows that UV radiation is higher in the Southern Hemisphere than in the Northern Hemisphere at similar latitude. This difference, relating to astronomical and climatic conditions, may have existed in the past at different times and perhaps influenced the evolution of human skin color.

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Physical Anthropology of the Angami Nagas (Nagaland, India)

Cited by 2 publications

References 0 publications

Opioid Pharmacokinetics-Pharmacodynamics

Opioid Pharmacokinetics-Pharmacodynamics

Hemispheric difference in human skin color

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