Results 141 to 150 of about 719 (182)

An investigation of asthma among the Tristan da Cunha islanders

British Journal of Diseases of the Chest, 1964
Summary Asthma occurs very commonly amongst the Tristan da Cunha islanders. Although allergic causes were found in most asthmatics, other allergic diseases were uncommon. The high incidence of asthma is likely to be due to genetic factors in a highly inbred community, the hereditary factor being one of heightened reactivity of the bronchi rather than
K M, CITRON, J, PEPYS
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Variation atDENND1Band Asthma on the Island of Tristan da Cunha

Twin Research and Human Genetics, 2019
AbstractA high prevalence of asthma has been documented among the inhabitants of Tristan da Cunha, an isolated island in the South Atlantic. The population derives from just 28 founders. We performed lung function testing, including methacholine inhalation challenge, allergen skin prick testing, and collected DNA from essentially all of the current ...
Duffy, David L, Siminovitch, Katherine A, Zamel, Ricardo, Chapman, Kenneth R, Martin, Nicholas G, Zamel, Noe   +5 more
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Asthma in the Tristan da Cunha Islanders

Journal of Asthma Research, 1968
(1968). Asthma in the Tristan da Cunha Islanders. Journal of Asthma Research: Vol. 5, No. 3, pp. 177-190.
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The founding mitochondrial DNA lineages of Tristan da Cunha Islanders

American Journal of Physical Anthropology, 1997
Genealogical histories show that the inhabitants of Tristan da Cunha are derived from a known number of founders. Using the transmission of mitochondrial DNA (mtDNA) from mother to offspring pairs, we traced the mtDNA types found in 161 extant individuals to five female founders. Although the historical data claimed that two pairs of sisters were among
Soodyall, H., Jenkins, T., Mukherjee, A., Du Toit, E., Roberts, D., Stoneking, M. ; https://orcid.org/0000-0001-9044-6679   +5 more
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II. A clinical and parasitological survey of the Tristan da Cunha islanders

Transactions of the Royal Society of Tropical Medicine and Hygiene, 1963
Abstract Of the 268 islanders, who were transferred to Britain following the eruption of the volcano, 259 were surveyed during the 4-week period between December, 1961, and January, 1962. History and a full examination including the routine testing of the urine were recorded for each individual at the time.
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Chironomidae from Gough, Nightingale and Tristan da Cunha islands

Zootaxa, 2011
The resurrection of trans-oceanic dispersal is the most striking aspect of a major shift in historical biogeography toward a more even balance between vicariance and dispersal explanations. Molecular dating of lineage divergences favors oceanic dispersal over tectonic vicariance as an explanation for disjunct distributions in a wide variety of taxa ...
Saether, Ole A., Andersen, Trond
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GEOMAGNETIC OBSERVATIONS ON MARION ISLAND, GOUGH ISLAND AND TRISTAN DA CUNHA

Transactions of the Royal Society of South Africa, 1961
In September 1957 the International Association of Geomagnetism and Aeronomy recommended that a magnetic secular variation station be established on Tristan da Cunha (37°03' S., 12°18' W.). During the ensuing three years the Union of South Africa has established secular variation stations on no fewer than three of the southern islands, viz.
B. L. Wild, A. M. van Wijk
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Geochronology of the Tristan da Cunha Group of Islands

Geological Magazine, 1967
AbstractA geological synopsis of the three main islands of the Tristan da Cunha group is given and their rate of growth by volcanic processes, and their subsequent erosion, are examined in the light of recent radiometric age data. These data, though few as yet, suggest that each island has a “life cycle” consisting of a brief constructional volcanic ...
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Vagrant leopard seal at Tristan da Cunha Island, South Atlantic

Polar Biology, 2017
Leopard seals Hydrurga leptonyx breed in the Antarctic pack ice, but individuals may wander farther north. Only two records exist from Gough Island (40°S, 10°W) situated 360 km to the SW of Tristan da Cunha Island, in the central South Atlantic Ocean. We report the first record from Tristan da Cunha (37°S, 12°W) in September 2016. The juvenile male was
M. N. Bester, W. A. Bester, M. Wege, R. A. Schofield, T. A. Glass   +4 more
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GRAVITY OBSERVATIONS AT MARION ISLAND, TRISTAN DA CUNHA AND GOUGH ISLAND

Transactions of the Royal Society of South Africa, 1961
Stations were established with a Worden geodetic-type gravimeter on Marion Island, Tristan da Cunha and Gough Island. The gravity values at these stations, viz. two on Tristan da Cunha and one each on Marion and Gough, were determined relative to the international gravity base at Mowbray, Cape Town. Two methods for extending the range of the gravimeter
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