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In dit onderzoek wordt de samenhang tussen de opvoeddimensies psychologische controle, strikte controle en steun en externaliserende gedragingen van adolescenten onderzocht.. In de adolescentie wordt onderscheid gemaakt tussen de vroege adolescentie en de midden adolescentie. Voor dit onderzoek wordt gebruik gemaakt van data (N = 1313) uit het onderzoeksproject CONAMORE (Meeus, 2001). De resultaten van dit onderzoek geven aan dat de opvoeding significant samenhangt met externaliserend gedrag van adolescenten. De opvoeddimensie psychologische controle vertoont een zwakke, positieve samenhang, de opvoeddimensie steun vertoont een zwakke negatieve samenhang. Voor de opvoeddimensie strikte controle zijn geen significante resultaten gevonden. Wanneer echter gekeken wordt naar het effect van opvoeding op latere probleemgedragingen, blijkt op...
The present study consists of a synthesis of the lithostratigraphy, geotechnical properties, geometry and distribution of Eocene and Quaternary deposits of the Belgian continental shelf. It is based on available large datasets (seismics, cores, cone penetration tests) and their interpretations synthesised from numerous studies from the last 20 years. A significant effort has been focused on data digitisation and integration into appropriate GIS software packages in order to compare the data in a much more dynamic and flexible way. New insights have been proposed on the lithostratigraphy and geotechnical properties of offshore and onland deposits. An application is presented for the selection of wind farm implantation sites. Geological and geotechnical aspects of direct interest for wind farm implantation site selection have been focuse...
The paper critically reviews the literature concerning the effect of ankle bracing and taping on vertical jump, agility, running speed, and broad jump performance. MEDLINE, CINAHL and SPORTDiscus were searched for papers published between 1988 and June 2003. The following keywords were used: performance, running, jump, agility, speed, brace, orthotic devices, tape, taping, ankle. References of retrieved articles were screened for additional relevant studies. Studies were eligible if they reported on the effect of an ankle support on vertical jump, running, agility or broad jump. Only studies that were written as full reports and had been published in the English language were included. Data on the effect of the ankle support on vertical jump, running speed, agility and/or broad jump performance were abstracted from the text and tables....
Accurate control of the balance of the T1 and T2 cells during antiviral immunity is essential for optimizing immune effector functions and for avoiding potentially severe immunopathology. We examined the in vivo role of the signal transducer and activator of transcription (STAT) 4 in regulating the T1/T2 balance during the response to live influenza virus and isolated viral proteins. We found that the differentiation of gamma interferon (IFN-γ)-producing Th1 and Tc1 cells after inoculation of live virus occurred independently of STAT 4 expression. Influenza virus-specific T2 and Tc2 responses were well controlled in such STAT 4-deficient mice unless IFN-γ was eliminated as well. In contrast, the STAT 4-dependent signaling pathway played a more essential role in regulating the T1/T2 balance after immunization with viral proteins and, in...
We investigated the role of different lymphocyte subpopulations in the host defense reaction against influenza virus infection, taking advantage of various immunodeficient mouse strains. Whereas, following immunization, wild-type animals showed complete protection against challenge with a lethal dose of A/PR8/34 (PR8) virus, mice that lack both B and T cells but not NK cells (namely, scid and RAG2(-/-) mice) did not display any protective effect in similar conditions. By contrast, J(H)D(-/-) mice devoid of B cells and immunized with virus showed a protective response after challenge with a lethal dose. The immunized J(H)D(-/-) mice that survived completely recovered from the influenza virus infection. Immunized J(H)D(-/+) mice exhibited a more complete protection, suggesting the role of specific antibodies in resistance to infection. T...
A contiguously linked T-B synthetic viral epitope (110HA120-150HA159,T-B) was investigated for its potency in inducing humoral and cellular immune responses in vivo. The T-cell epitope 110HA120 corresponds to the site 1 hemagglutinin (HA) of the A/PR/8/34 (PR8) influenza virus and is recognized by CD4 T cells in association with I-Ed class II major histocompatibility complex molecules. The 150HA159 represents a major B-cell epitope of the HA protein. T-B dipeptide emulsified in Freund's complete adjuvant was able to induce strong antiviral antibody titers and a high frequency of specific T-cell precursors after a single inoculation in BALB/c mice. In contrast, immunization under identical conditions with equimolar mixtures of T and B peptides did not elicit antibody titers or a cellular immune response. As indicated by the isotypes of ...
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