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PLASMA LEVELS OF OESTRONE AND OESTRADIOL-17β IN POSTMENOPAUSAL WOMEN (1979)

Badawy, S.Z A. ; Elliott, L. J. ; Elbadawi, A. ; [et al.]

Oxford, UK : Blackwell Publishing Ltd

BJOG 86 (1979), S. 0

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ISSN: 1471-0528

Source: Blackwell Publishing Journal Backfiles 1879-2005

Topics: Medicine

Notes: The plasma oestrone and oestradiol levels of 34 postmenopausal women were studied and related to various of their other characteristics. The plasma oestrone and oestradiol-17β levels (Mean±SE) were, respectively, 32.09±4.6 pg/ml and 13.9±3 1 pg/ml. There was a highly significant negative linear association between the years elapsed since the menopause and oestrone levels (P 〈0.001) and oestradiol levels (P 〈0.02). Both plasma oestrone and oestradiol levels were directly related to weight, but the relation was only significant for oestradiol. A significant positive correlation was found between vaginal bleeding and excess weight. The degree of oestrogenicity of the vaginal smear was directly related to the levels of oestrone (P〈0.08) and oestradiol (P〈0.005) and to the degree of endometrial hyperplasia (P〈0.02).

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1111/j.1471-0528.1979.tb10685.x

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Modulation of dissolved oxygen levels in a hypertidal estuary by sediment resuspension (1994)

Parker, W. R. ; Marshall, L. D. ; Parfitt, A. J.

Springer

Aquatic ecology 28 (1994), S. 347-352

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ISSN: 1573-5125

Keywords: estuary ; sediment resuspension ; hyperconcentrated benthic layers ; oxygen demand ; modulation

Source: Springer Online Journal Archives 1860-2000

Topics: Biology

Notes: Abstract Hyperconcentrated benthic layers, which form during neap tides, recruit much of the fine sediment population of the turbidity maximum of a hypertidal estuary. Measurements of tidal amplitude and suspended solids concentration reveal that resuspension of the hyperconcentrated layers occurs between three and eight tides after neap tides rather than during spring tides (12 to 15 tides after neaps). During these resuspension events, dissolved oxygen levels are reduced but recover by spring tides. Peak solids concentrations and critically depressed dissolved oxygen levels are out of phase with tidal current amplitude. Thus observations close to neap and spring tides do not necessaraly capture the extremes of the envelope of water quality conditions.