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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Review of income and wealth 24 (1978), S. 0 
    ISSN: 1475-4991
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: This article explores the assumptions underlying present definitions of national income in its principal uses, and considers the alterations that would be needed to allow for the inclusion of environmental quality. A numerical example illustrates the impact of alternative measures. The discussion concludes that if we want national income to conform more closely to theoretical concepts of welfare indices, then we need to include a proxy for those environmental services that would not be completely free goods if it were possible to overcome their inherent non-marketability. The least unsatisfactory proxy would be the spending on environmental protection.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary Background Although skin is typically the first site of involvement of acute graft-versus-host disease (GVHD), most standard recommended staging and grading criteria allow enrolment of patients with involvement of GVHD target organs other than the skin in studies analysing risk factors for acute GVHD after stem cell transplantation (SCT). Objectives To determine the risk factors for developing histologically confirmed acute cutaneous GVHD in patients who underwent allogeneic SCT for different haematological disorders. Methods This retrospective study was based on review of clinical files and databases from 300 consecutive patients with several haematological disorders who received allogeneic SCT between 1 January 1984 and 31 December 1999 at Hospital Universitario de la Princesa, Madrid, Spain. Variables evaluated included diagnosis of haematological disorder, age and gender (donor and recipient), HLA matching, female donor to male recipient, donor and recipient viral serology (cytomegalovirus), conditioning regimen, GVHD prophylaxis, blood counts at day of engraftment, mortality, cause of death, and survival at 100 days, 5 years and 10 years following SCT. Results In multivariate analysis, risk factors for acute cutaneous GVHD were type of haematological disease (P = 0·006), HLA disparity (P = 0·006), number of transplants per patient (P = 0·017), conditioning regimen (P = 0·001), and GVHD prophylaxis (P = 0·025). Survival rates did not differ significantly for cases and controls. Conclusions Risk factors for acute cutaneous GVHD were a diagnosis of chronic myeloid leukaemia, HLA disparity, receipt of more than one SCT, conditioning regimens including total body irradiation, and GVHD prophylaxis regimens other than ciclosporin plus methotrexate. Other common risk factors for acute GVHD without specific target organ involvement showed no significant association with the risk for developing acute GVHD affecting the skin as primary target organ.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The marine sponge Dysidea fragilis from El Mar Menor, a hypersaline coastal lagoon (Murcia, Spain), contains the furanosesquiterpenoid ent-furodysinin as the major secondary metabolite. D. fragilis emits a defensive white fluid when it is disturbed. Electron micrographs of this fluid revealed intact vesiculated cells together with other amorphous material. Dissociated cells are more rounded in shape but maintain the same ultrastructural features as cells observed in ultra-thin sections of the whole sponge. The defensive secretion is composed mainly of sponge cells with abundant light vesicles. Sometimes these light vesicles appear to open into the intercellular space; this correlates with surface blebs on these cells observed under scanning electron microscopy. The intracellular location of ent-furodysinin was confirmed by Erlich staining. In laboratory assays, we examined the role of ent-furodysinin as a feeding deterrent to generalist fish predators. It was isolated from D. fragilis and incorporated into a carrageenan-based artificial diet. The addition of ent-furodysinin to the artificial diet reduced feeding by the fish Thalassoma pavo. Similarly, fish did not feed on artificial diet above which defensive secretion of D. fragilis had been ejected with a small syringe.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of risk and uncertainty 20 (2000), S. 247-269 
    ISSN: 1573-0476
    Keywords: cost-benefit ; value of life ; labour market
    Source: Springer Online Journal Archives 1860-2000
    Topics: Economics
    Notes: Abstract Estimates of the extra earnings for jobs with higher risks of death are used in cost-benefit studies involving risk changes. Because of this use, the magnitude and stability of the estimated coefficient are important. Part of the current study closely reproduces the 1982 study by Marin and Psacharopoulos to check on the stability. We also examine the robustness of the estimate to the inclusion/exclusion of non-fatal risks and other relevant characteristics. While the magnitude of the coefficient has increased from the earlier study, the coefficient is robust to other changes in the specification. This yields a “value of life” figure of £9.7 million.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1434-601X
    Keywords: PACS. 25.70.-z Low and intermediate energy heavy-ion reactions – 25.75.Dw Particle and resonance production – 14.20.Gk Baryon resonances with S = 0
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: Proton-π0 coincidences have been measured at the beam energy of 180A MeV in the reaction Ar+Ca studied by TAPS at SIS/GSI. In the proton-π0 invariant mass spectrum we observe a significant excess of strength above the background obtained by event mixing. We attribute this signal to the strength distribution N Δ of the Δ baryonic resonance. No correlation is observed in the case of deuteron-π0 coincidences. Assuming isotropic emission of π0 and Δ+ from a midrapidity thermal source and isospin symmetry, we determined the global N Δ/N πratio of 0.79 ±0.30(stat) ±0.2(syst). This value indicates that most pions produced at subthreshold energy in heavy-ion reaction are mediated by the Δ-resonance.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Annals of operations research 86 (1999), S. 179-198 
    ISSN: 1572-9338
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Notes: Abstract A family of two‐stage location problems is considered. These problems involve a systemproviding a choice of depots andyor plants, each with an associated location cost, and a setof demand points which must be supplied, in such a way that the total cost is minimized. Byusing Lagrangian relaxation, lower bounds and heuristic solutions are obtained for two kindsof formulation involving two or three indexes for each transportation variable. The goodnessof both formulations is compared by means of a computational study, and the results forseveral instances are presented.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Non-mycorrhizal plants grown 5 weeks in a low-phosphate soil with different amounts of soluble P were transplanted to soil also with different levels of phosphate and inoculated with VA mycorrhiza. The intensity of mycorrhizal infection as affected by the interaction of differents levels of phosphate in soil and in the host was examined after a further 8 weeks. In the soil with no added phosphate mycorrhizal infection was not affected by the initial P content of the plants. When 0.8 or 1.5 g K2PO4 was given per kg soil both the external and the internal P negatively influenced the infection. In some conditions a P content that was supraoptimal for infection was not for plant growth. The critical P concentration in plants depends on the age of the host. An interaction between P and N as a factor contributing to phosphate ‘toxicity’ is discussed.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1573-5052
    Keywords: Germination dynamics ; Heat ; Obligate seeders
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Seeds ofPinus halepensis andPinus pinaster subsp.pinaster were subjected to four heat treatments (90, 110, 150 and 200 °C) for 1 and 5 min to investigate their tolerances to high temperatures resulting from fires. Another group of seeds of each species were not heated and considered as a control. Information on responses of seeds to high temperatures would help to determine whether or not the species are pyrophytes. Heating for 1 min at all temperatures did not affect the average germination ofPinus halepensis seeds whereas that ofP. pinaster subsp.pinaster seeds was decreased significantly when they were heated to 200 ° C. HoweverP. pinaster seeds were more resistant than that ofP. halepensis when heat treatment was 150 °C for 5 min. Data obtained also indicated that, in general,P. halepensis andP. pinaster subsp.pinaster seed germination is not favoured by a temperature increase than can be reached in soils during a fire. Thus, the species are not pyrophytes but colonizers of burnt sites.
    Type of Medium: Electronic Resource
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