Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 11
    Electronic Resource
    Electronic Resource
    New York : Cambridge University Press
    International organization 43 (1989), S. 693-714 
    ISSN: 0020-8183
    Source: Cambridge Journals Digital Archives
    Topics: Political Science
    Notes: In multilateral trade negotiations, trade-offs usually are made within the issue-areas that are on the agenda. In the absence of cross-issue trade-offs (linkages), agreement may not be possible. To maximize both the potential gains from trade and the scope for agreement, negotiators need to be willing and able to consider the feasibility of issue linkages. This raises the practical problem of determining when such trade-offs are likely to be necessary. Although quantitative methods of policy analysis have been developed, they have not been widely used by policymakers, in part owing to the fact that negotiations focus largely on nontariff measures. This article proposes a qualitative approach to the problem and applies it to the Tokyo and Uruguay Round negotiations on safeguards to protect domestic industries from problems related to increases in imports.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 12
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 13
    Electronic Resource
    Electronic Resource
    Springer
    Entomologia experimentalis et applicata 43 (1987), S. 145-151 
    ISSN: 1570-7458
    Keywords: Haematobia thirouxi potans ; buffalo fly ; larval intraspecific competition ; pupal size ; survival
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Résumé Les effets du surpeuplement larvaire sur le développement, la survie et la taille d'Haematobia thirouxi potans, ont été examinés sur de petites quantités de bouse (10 et 20 g) et de plus importantes (1 000 g), au laboratoire à 25°C. Les bouses étaient contaminées avec des oeufs de la mouche à des densités de 0,05 à 32 oeufs par gramme de bouse. Dans la plupart des cas le taux d'éclosion était de 90–100%. La durée du dévelopement larvaire dans 10 g de bouse a été prolongée pour les densités supérieures à 0,8 oeuf per g, et la durée développement pour 32 oeufs per g (11 jours) était le double de celle obtenue grand il n'y avait pas surpeuplement. La taille et la survie diminuent toutes les deux avec la densité larvaire, mais la miniaturisation était observée à des densités où la survie n'était pas modifiée; ainsi la taille est un indice plus sensible de l'adéquation de l'habitat larvaire. Les effets du surpeuplement larvaires deviennent clairs à des densités plus faibles avec 1 000 g de la bouse qu'avec 10 g. Il y a eu une taille minimale endessous de laquelle les larves étaient incapables de former une pupe. La probabilité d'éclosion était liée à la taille de la pupe, et une plus forte proportion de petits individus ne sont pas parvenu à éclore.
    Notes: Abstract The effects of larval crowding on development, survival and size of the African buffalo fly, Haematobia thirouxi potans (Bezzi), were examined in small (10 or 20 g) and 1 000 g masses of cattle dung in the laboratory at 25°C. Dung was infested with fly eggs at densities which ranged from 0.05 to 32.0 eggs per g dung; in most cases 90–100% of eggs hatched. The duration of larval developmentin 10 g dung masses was extended by larval crowding at densities above 0.8 eggs per g dung and the development period with 32 eggs per g dung (11 days) was double that observed in uncrowded dung masses. Both size and survival decreased with increasing larval density, but stunting was observed at lower densities than those which reduced survival and so size was the more sensitive index of the adequacy of the larval environment. The effects of larval crowding became evident at lower larval densities in the 1 000 g dung masses than in the 10 g dung masses. There was a minimum size below which third instar larvae failed to pupariate. The probability of survival was related to pupal size and a high proportion of the smaller individuals failed to eclose.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 14
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of environmental contamination and toxicology 35 (1985), S. 183-192 
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 15
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 16
    Electronic Resource
    Electronic Resource
    Springer
    World journal of surgery 12 (1988), S. 361-361 
    ISSN: 1432-2323
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 17
    ISSN: 1432-2323
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé L'importance relative des facteurs pronostiques dans les cancers papillaires et folliculaires de la thyroïde ont été étudiés chez 113 patients selon le modèle de Cox. Voici les facteurs de pronostic étudiés: histologie, degré de différentiation, extension extrathyroïdienne, envahissement ganglionnaire, présence de métastase à distance au moment du diagnostic, contenu nucléaire en ADN, âge au moment du diagnostic, et sexe. Le contenu d'ADN nucléaire était mesuré dans les tumeurs primitives par la cytométrie de flux. La thyroïdectomie totale suivie d'I 131 était le traitement standard. Les résultats montraient que le contenu nucléaire en ADN était en corrélation significative avec le type histologique et le degré de malignité dans les cancers papillaires. La présence de métastases à distance était de loin le facteur pronostique le plus important. Dans le groupe de patients sans métastases (n=91), la présence de polyploïdie (c'est-à-dire 2 chaînes aberrantes ou plus) était le facteur pronostique significatif pour la survie globale. Pour la survie sans maladie, la polyploïdie venait après le facteur âge. Dans le groupe présentant des métastases à distance (n=22), tous les patients avec tumeurs polyploïdes sont morts pour huit patients de ceux qui avaient des tumeurs à ploïdie différente. Mais le petit nombre de patients de ce groupe interdit de considérer ces résultats comme significatifs. Cette étude démontre que le contenu nucléaire en ADN est un facteur pronostique chez les patients ayant un cancer papillaire et folliculaire sans métastases au moment du diagnostic.
    Abstract: Resumen La importancia relativa de los factores de pronóstico en el cancer papilar y folicular de la glándula tiroides fue estudiada en 113 pacientes utilizando el modelo de riesgos proporcionales de Cox. Los factores de pronóstico analizados fueron: histologia, grado tumoral, crecimiento extratiroideo, extension ganglionar, metastasis distantes en el momento del diagnóstico, contenido nuclear de DNA, edad en el momento del diagnóstico, y sexo. El contenido nuclear de DNA fue determinado en tumores primarios mediante citometn'a de flujo. El tratamiento estandar fue la tiroidectomía total y la ablación postoperatoria con131I. Los resultados muestran que el contenido nuclear de DNA se correlaciona en forma significativa con el tipo histológico y en el cancer papilar también con el grado tumoral. La presencia de metastasis distantes en el momento del diagnóstico es, muy ampliamente, el más importante factor de pronóstico. En el grupo de pacientes libre de metastasis distantes (n=91), la multiploidia (i.e., presencia de 2 o más lineas primitivas aberrantes) aparece como el único factor de significatión en cuanto a supervivencia global. Respecto a supervivencia libre de enfermedad la multiploidia aparece como segundo factor, después de la edad. En el grupo de pacientes con metástasis distantes (n=22) todos los 6 pacientes con tumores multiploides murieron, en comparación con 8 (50%) de 16 de aquellos con tumores con cualquier otro tipo de ploidia. Sinembargo, el pequeno número que constituye este grupo impide derivar resultados de signification. El presente estudio demuestra que el contenido nuclear de DNA es un factor pronóstico en pacientes con cancer tiroideo papilar y folicular libres de metastasis distantes.
    Notes: Abstract The relative importance of prognostic factors in papillary and follicular thyroid cancer was studied in 113 patients using Cox's proportional hazards model. Prognostic factors studied were: histology, tumor grade, extrathyroidal growth, nodal involvement, distant métastases at diagnosis, nuclear DNA content, age at diagnosis, and sex. Nuclear DNA content was measured in primary tumors by flow cytometry. Total thyroidectomy and postoperative131I ablation was the standard treatment. The results showed that nuclear DNA content correlated significantly with histologic type and, in papillary cancer, also with tumor grade. The presence of distant metastases at diagnosis was, by far, the most important prognostic factor. In the patient group without distant metastases (n=91), multiploidy (i.e., presence of 2 or more aberrant stemlines) was the only significant prognostic factor for overall survival. With respect to diseasefree survival, multiploidy was second only to the age factor. In the patient group with distant métastases (n=22), all 6 patients with multiploid tumors died compared to 8 (50%) of 16 of those with other ploidy tumors. However, the small number in this group precluded significant results. The present study demonstrates that nuclear DNA content is a prognostic factor in those patients with papillary and follicular thyroid cancer without distant metastases at diagnosis.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 18
    ISSN: 1432-0533
    Keywords: Collagens ; Fibronectin ; Laminin ; Gliomas ; Meningiomas
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The distribution of type I, III, IV and V collagen in 35 gliomas and 20 meningiomas was studied by indirect immmunofluorescence staining. In addition, the presence of fibronectin (FN) and laminin (LN) is also reported. In gliomas expression of type IV collagen and LN was found in the vessel walls and associated with the endothelial glomerulus-like proliferations. FN and type V collagens were located in proliferating vessel walls in a pattern corresponding both to the basement membrane and the perivascular matrix around the vessels. In the extracellular matrix of grade III and IV gliomas occasional faint intercellular fluorescence was also observed with both FN and type V collagen. Type I and III collagens were localised in the vessel walls and in the perivascular connective sheet. Glioma cells did not express any of the antigens investigated. In meningiomas, type IV and V collagens, LN and FN were found in vessel walls, whorls formations and psammoma bodies. These stainings support the hypothesis of a vascular origin of these psammoma bodies which were only found in syncytial and transitional meningiomas. Both type I and III collagens were detected in the perivascular connective tissue. In general, meningioma cells and extracellular matrix did not express any of these molecules, except in transitional meningiomas where occasional fluorescence was observed in extracellular matrix with type V collagen and FN.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 19
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary A recombinant probe specific for the proα2 chain of human Type V collagen has been used for the localization of the corresponding gene (COL5A2) to chromosome 2. Regional mapping by in situ hybridization and analysis of DNA from humanxrodent cell lines indicated that COL5A2 is confined within the segment 2q14→2q32, thus syntenic to the proα1 (III) collagen gene (COL3A1).
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 20
    Electronic Resource
    Electronic Resource
    Springer
    Journal of population economics 1 (1988), S. 5-16 
    ISSN: 1432-1475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Sociology , Economics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...