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  • 1
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 83 (1985), S. 3621-3625 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The second virial coefficient of 3He gas has been determined between 1.3 and 0.6 K from measurements of pressure and density on several isotherms. The density was derived from the resonance of a superconducting microwave cavity whose frequency was dependent on the dielectric constant of the gas within it. The pressure was also determined using a resonant superconducting rf cavity, in this case the flexing of a diaphragm being the source of the dependence of frequency on pressure. The experimental techniques work well at low pressure and densities. The virial coefficient appears well behaved and in agreement with the experimental work of others at higher temperatures.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Aquaculture research 18 (1987), S. 0 
    ISSN: 1365-2109
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract. Atlantic salmon kelts were successfully reconditioned in salinities of 16% and 28%o using a moist pellet diet. Two groups of reconditioned kelts were re-acclimated to fresh water in the autumn tu prevent super chitling in salt water during the winter. The feeding response and growth of salmon kelis. both years, was highest when salinities were maintained at 28% during the winter and 16%during the summer. However, other salinities also provided acceptable growth rates. Two-sea-winter salmon kelts reconditioned at a slower rate in all groups than 1-sea-winter salmon kelts. Kelt survival was 93.1% the first year and 82.7% the second year. Gonnd maturation occurred in 17.9% of the female 1-sea-winter kelts and 40.6% of the male 1-sea-winter kelts after the first year. At the end of the second year. 83.3% of the 1-sea-winter female kelts and 96.3% of the l-sea-winter male kelts matured and spawned. Reconditioned salmon kelts with a mean fork length of 68.4 cm produced 7261 eggs per fish with a mean egg diameter of 5.70 mm and a fecundity of 2262 eggs.kg−1, Survival (Fl) from the green egg stage to the alevin and smolt stages was 73.5% and 38.8% respectively. The smolt to adult return rule based on unadjusted tug recaptures was 2.20%.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-198X
    Keywords: Poststreptococcal glomerulonephritis ; Biopsy ; Prognosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Between 1962 and 1970, 36 children with acute biopsy-proven poststreptococcal glomerulonephritis (PSGN) entered a prospective long-term follow-up study. The initial biopsies were scored into four histological grades using criteria based on endocapillary proliferation, leucocyte infiltration, epithelial “hump” and crescent formation; 5 patients had grade-1 (least severe), 14 grade-2, 15 grade-3 and 2 grade-4 biopsies. Two children died from rapidly progressive glomerulonephritis; both had grade-4 biopsies. Early repeat biopsy in 12 patients showed improvement in all but one patient who progressed from grade 2 to type 2 mesangiocapillary glomerulonephritis (MCGN). The initial biopsy grade correlated significantly with heavy proteinuria (Ξ2 = 9.73,P〈0.01) but not with hypertension, haematuria or renal functional impairment. Follow-up observations were made after mean periods of 9.5 years (range 5.4–12.4 years; 32 subjects) and 19.0 years (range 14.6–22 years; 30 subjects). None of the survivors had an abnormal plasma creatinine. Only one patient (grade-3 biopsy), a female with a subsequent history of recurrent pyelonephritis, was hypertensive. Isolated microscopic haematuria persisted in 1 grade-2 and 2 grade-3 subjects. One grade-2 subject had proteinuria secondary to MCGN and one grade-3 subject had mild proteinuria and borderline hypertension. Although 20% of subjects had urinary abnormalities, we conclude that the long-term outcome of PSGN in children is excellent.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Pediatric nephrology 1 (1987), S. 224-229 
    ISSN: 1432-198X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Pediatric nephrology 2 (1988), S. 490-497 
    ISSN: 1432-198X
    Keywords: Vasculitis ; Wegener's granuloma ; Polyarteritis ; Antileucocyte cytoplasm antibodies (ANCA) ; Immune complexes ; Cellmediated immunity ; Immunosuppressive treatment ; Plasma exchange
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Vasculitis is rare in childhood, apart from Henoch-Schönlein purpura, and paediatric nephrologists see few cases of Wegener's granuloma or microscopic polyarteritis. In contrast, this pattern is reversed in adults. Recently much information about the presentation and longer-term course of both these conditions has been described in adults, and more aggressive treatment of severe cases with renal failure has improved the outlook from a 5-year survival of about 5%–80% or more. In parallel, it has become evident that the abundant immune complexes in the circulation of patients with vasculitis may play little or no role in the pathogenesis of the vasculitic lesions. Current interest centres both on the possible role of cellmediated immunity and the recent finding of antibodies which react with antigens in the cytoplasm of leucocytes. These antibodies seem to be of clinical use in defining patients with vasculitis, especially when only the kidney is involved at a clinical level. The nature of this leucocyte antigen (or antigens) and the possible role of antibodies directed against them in the pathogenesis of the disease are subjects of current work in many loboratories.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-198X
    Keywords: Acute renal failure ; Hypoxanthineguanine and adenine phosphoribosyltransferase ; Lesch-Nyhan syndrome ; 2,8-Dihydroxyadenine ; Uric acid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Acute renal failure (ARF) is not listed as a usual form of presentation in hypoxanthineguanine phosphoribosyltransferase deficiency, despite the gross uric acid overproduction in the defect. We found that a third of such patients may present in ARF when the urinary uric acid/creatinine ratio may be normal, not raised, and the defect may be suspected from the disproportionate increase in plasma uric acid. This is important in view of the potential confusion of uric acid with 2,8-dihydroxyadenine, the even more insoluble purine excreted in the other salvage enzyme disorder, adenine phosphoribosyltransferase deficiency. In that disorder, presentation in ARF is well recognised, the uric acid/creatinine ratio is also normal, but plasma urate is not raised. Our combined experience in these two disorders underlines the importance of early recognition and treatment with carefully adjusted doses of allopurinol, which may reverse or postpone renal failure.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Pediatric nephrology 3 (1989), S. 300-300 
    ISSN: 1432-198X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Pediatric nephrology 3 (1989), S. 350-362 
    ISSN: 1432-198X
    Keywords: SLE ; Nephritis ; Children ; Treatment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The literature on the treatment of lupus nephritis is scattered, much of it in rheumatological rather than nephrological journals. Whatever our ignorance of the nature and genesis of lupus nephritis, under empirical treatment the prognosis, especially for severe forms, has improved dramatically during the past 20 years. For severe lupus nephritis, the evidence that the addition of cytotoxic agents to corticosteroids improves outcome is now secure, and discussion centres mainly on which drug to use and by what route. Intravenous methylprednisolone is at least as effective as high-dose tapering oral therapy for initial treatment, and carries fewer side-effects. The role of plasma exchange in lupus remains undefined: it may have a role in the treatment of cerebral manifestations or otherwise resistant patients, but controlled trials have failed to show benefit. Future developments will probably centre around the use of specific monoclonal antibodies which target specific groups and subgroups of cells, “humanised” by the splicing of human Fc piece to rodent (fab)2, perhaps bearing toxins. To use these agents to best advantage, however, we will have to understand better than we do today the nature of the cellular defects in the immune response which underlie the lupus syndrome.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 17 (1878), S. 507-507 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SINCE velocity of sound does not vary with density (Balfour Stewart, Chap. IV., “Elementary Physics”), would you kindly state the answer that should be given to the question, Why does sound travel quicker in water and wood than in air, and what is the relation between density and velocity of ...
    Type of Medium: Electronic Resource
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  • 10
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