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  • Other Sources  (2)
  • Elsevier  (2)
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  • 1
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    Unknown
    Elsevier
    In:  Deep-Sea Research, 4 . pp. 105-115.
    Publication Date: 2020-11-09
    Description: Fourteen instances of whales entangled in submarine cables are reported. Ten entanglements occured off the Pacific coast of Central and South America. Six cases occured in about 500 fathoms, with 620 fathoms the maximum depth reported. Five entanglements occured in the period, Februray-March-April. All whales positively identified were sperm whales. The submarine cable was generally wrapped around jaw and often around the flukes and fins. The cable was rarely broken but always badly mauled. The entanglements often occured near former repairs where there is a chance for extra slack cable on the bottom. Two photographs of a sperm whale entangled in a cable and one photograph of a whale-jaw entangled in a cable are presented. It is concluded that sperm whales often swim alog the sea floor in depths as grat as 620 fathoms. It is suggested that the whales become entangled while swimming along with their jaw plowing through the sediment in search of food. It is possible that the whales attack tangled masses of slack cable mistaking them for items of food.
    Type: Article , PeerReviewed
    Format: text
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  • 2
    facet.materialart.
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    Elsevier
    In:  The Journal of Laboratory and Clinical Medicine , 66 (5). pp. 822-829.
    Publication Date: 2022-01-06
    Description: Calcium absorbtion was measured in fasting human beings after oral administration of Ca^45 in a solution containing 10 to 500mg stable calcium and an intravenous dose of Ca^47. Absorbtion was determined from the ratio of specific activities of the two isotopes (oral dose/intravenous dose) in calcium of urine collected more than 24 hours later. The accuracy of this calculation was confirmed by comparison with absorbtion calculated from recovery of the oral dose in stools (the completeness of collection being determined from recovery of simultaneously given Cr2O2or Cr^51 labeled protein and a correction for endogenous calcium being made from the fecal recovery of the intravenouse dose of Ca^47). In 20 tests, the average difference between the two calculations of per cent absorbtion was 2.2 and the coefficient of variation, 1.6. The Conditions under which the double isotope procedure gives an accurate result were evaluated and the results of its use with 3 different doses of calcium given to normal subjects are reported
    Type: Article , PeerReviewed
    Format: text
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