Greece

Distribution by Scientific Domains
Distribution within Earth and Environmental Science

Kinds of Greece

  • ancient greece
  • central greece
  • northern greece
  • southern greece


  • Selected Abstracts


    THE SHORTAGE OF NURSES IN GREECE

    INTERNATIONAL JOURNAL OF NURSING PRACTICE, Issue 1 2000
    Article first published online: 24 DEC 200
    No abstract is available for this article. [source]


    MICROBIOLOGICAL AND PATHOGENIC CONTAMINANTS OF SEAFOOD IN GREECE

    JOURNAL OF FOOD QUALITY, Issue 1 2007
    C. PAPADOPOULOU
    ABSTRACT A total of 360 samples, including 105 marine fish, 25 prawns, 50 squid, 50 octopus, 30 mussels and 100 freshwater fish were examined microbiologically for the presence of microorganisms potentially pathogenic. All samples were examined following standard microbiological procedures. The isolated microorganisms were: Aeromonas hydrophilia (38,93%), Klebsiella ozonae (1,40%), Escherichia coli (14,87%), Yersinia enterocolitica (0,40%), Hafnia alvei (0,36.6%), Enterobacter agglomerans (0,42%), Citrobacter freundii (0,46%), Proteus vulgaris (15,80%), Proteus mirabilis (7,82%), Morganella morganii (0,30%), Pseudomonas fluorescens (0,34%), Pseudomonas putida (0,6%), Plesiomonas shigelloides (0,4%), Listeria innocua (1,3.3%), Vibrio parahaemolyticus (0,2%), Clostridium perfringens (0,1%), Staphylococcus aureus (0,80%) and Candida quillermondi (0,1%), Candida albicans (0,1%), Penicillium oxalicum (0,1%) and Penicillium italicum (0,12%). [source]


    A STUDY OF GLASS TESSERAE FROM MOSAICS IN THE MONASTERIES OF DAPHNI AND HOSIOS LOUKAS (GREECE)

    ARCHAEOMETRY, Issue 5 2010
    R. ARLETTI
    In this work 51 glass mosaic tesserae from decorations of the two Greek monasteries of Daphni and Hosios Loukas were analysed by inductively coupled plasma optical emission spectroscopy, electron microprobe analysis and X-ray powder diffraction. On the basis of the chemical analyses, after discrimination between the tesserae of the original decorations and those from other periods, it was possible to outline the distinctive traits of Byzantine mosaic tesserae. In both the monasteries, the original mosaics were decorated with tesserae produced with plant ash based glass, either of the typical composition or a mixture with natron type glass. The samples from the Hosios Loukas decorations show a more homogeneous composition compared with those from Daphni. The major differences among the original samples are due to the presence of opacifiers and colourants. [source]


    NEOLITHIC ZOOMORPHIC VESSELS FROM EASTERN MACEDONIA, GREECE: ISSUES OF FUNCTION*

    ARCHAEOMETRY, Issue 3 2009
    C. MARANGOU
    Five fragments of Late Neolithic clay zoomorphic vessels from northern Greece have been analysed for organic residues by gas chromatography , mass spectrometry. The results showed that the containers had been used in connection with a number of substances, in particular lower terpenoids, an oil or fat, possibly fossil fuel and in one case possibly beeswax. The paper considers likely interpretations of such combinations of materials in relation to possible functions of these symbolically enhanced artefacts. It appears that substances may have been used in the vessels because of their aromatic and/or medicinal and combustible properties, possibly in order to produce light, fragrance and/or smoke. [source]


    Principles of Corporate Governance in Greece

    CORPORATE GOVERNANCE, Issue 2 2001
    Harilaos Mertzanis
    This article presents the reasons which led the business community in Greece to reconsider existing corporate governance practices of listed corporations in the Athens Stock Exchange, outlines the general rationale for the creation and adoption of specific recommendations for best corporate practice, presents the recommendations in full detail and finally provides suggestions for the required corporate legal reform. [source]


    Social and emotional detachment: A cross-cultural comparison of the non-disruptive behavioural psychopathic traits in children

    CRIMINAL BEHAVIOUR AND MENTAL HEALTH, Issue 3 2009
    Eirini Manti
    Background,Questions about the international reliability and validity of aspects of psychopathy have been raised for adults, but hardly considered when applying the constructs to children. Aims/objectives,Our aim was to compare the psychometrics of a new instrument to measure psychopathic traits in children between two countries , the Netherlands and Greece. We also tested the hypothesis that, in both countries, both narcissistic-egocentric and callous-unemotional dimensions would be related to observed behavioural disorders. Methods,The Social and Emotional Detachment Questionnaire was used to assess narcissistic-egocentric and callous-unemotional dimensions of personality in representative national and community samples of 4,12-year-old children in the Netherlands and Greece, respectively. Parents filled in the questionnaires anonymously and also provided ratings of conduct disorders. Results,A two-dimensional construct of the psychopathic syndrome depicting, respectively, narcissistic and unemotional traits was reliable and valid in both countries, although there was considerable correlation between these two dimensions, which we designated ,social detachment' and ,emotional detachment', respectively. In both countries, the composite of social and emotional detachment was associated with aggressive and antisocial conduct disorders. Conclusions/implications,The reliability, validity and predictive value of this questionnaire must be tested further, for example, through multiple informants and longitudinally, but our findings that the tool performs robustly in two very different European countries is encouraging in terms of its potential value as a clinical screening tool and a tool for furthering the understanding of serious behavioural disorders in children. Copyright © 2009 John Wiley & Sons, Ltd. [source]


    Encountering Gods and Goddesses: Two Pilgrimages to Greece

    CROSSCURRENTS, Issue 3 2009
    Jill Dubisch
    First page of article [source]


    Prevalence of diabetes mellitus and obesity in the general adult population of Greece: a door-to-door epidemiological study

    DIABETIC MEDICINE, Issue 4 2009
    N. Tentolouris
    No abstract is available for this article. [source]


    Searching for schizophrenia in ancient Greek and Roman literature: a systematic review

    ACTA PSYCHIATRICA SCANDINAVICA, Issue 5 2003
    K. Evans
    Objective:, The aim of this study was to systematically examine ancient Roman and Greek texts to identify descriptions of schizophrenia and related disorders. Method:, Material from Greek and Roman literature dating from the 5th Century BC to the beginning of the 2nd Century AD was systematically reviewed for symptoms of mental illness. DSM IV criteria were applied in order to identify material related to schizophrenia and related disorders. Results:, The general public had an awareness of psychotic disorders, because the symptoms were described in works of fiction and in historical accounts of malingering. There were isolated instances of text related to psychotic symptoms in the residents of ancient Rome and Greece, but no written material describing a condition that would meet modern diagnostic criteria for schizophrenia. Conclusion:, In contrast to many other psychiatric disorders that are represented in ancient Greek and Roman literature, there were no descriptions of individuals with schizophrenia in the material assessed in this review. [source]


    Morphological variation of the five vole species of the genus Microtus (Mammalia, Rodentia, Arvicolinae) occurring in Greece

    ACTA ZOOLOGICA, Issue 3 2009
    Stella E. Fraguedakis-Tsolis
    Abstract Morphometric data for the five vole species of the genus Microtus living in Greece are old, sparse, poor and insufficiently analysed. This work aims to give the first comprehensive morphometric analysis of body and skull inter- and intraspecific variation for M. (M.) guentheri, M. (M.) rossiaemeridionalis, M. (Terricola) subterraneus, M. (T.) felteni and M. (T.) thomasi, applying multivariate statistics to 28 linear morphometric variables. It was based on ample material (202 adult individuals) using samples from localities that adequately cover the entire distributional range of each species in Greece. The five species and the two subgenera (Microtus and Terricola) were morphometrically clearly distinguished and discriminating variables were revealed. However, morphometrics did not provide robust criteria to infer phylogenetic relations among species. Furthermore, three species, M. (M.) guentheri, M. (M.) rossiaemeridionalis and M. (T.) thomasi, exhibited considerable intraspecific size or shape variation, which was mostly random and not associated with geographical proximity. Comparisons with data in the literature, mainly concerning populations of these species from adjacent areas, indicate that the Greek M. (M.) guentheri, M. (M.) rossiaemeridionalis and M. (T.) thomasi tend to be smaller than their conspecifics, while M. (T.) subterraneus and M. (T.) felteni are about equal in size to their Balkan relatives. [source]


    Interrill erosion on cultivated Greek soils: modelling sediment delivery

    EARTH SURFACE PROCESSES AND LANDFORMS, Issue 8 2006
    D. Dimoyiannis
    Abstract For interrill erosion, raindrop-induced detachment and transport of sediment by rainfall-disturbed sheet flow are the predominant processes, while detachment by sheet flow and transport by raindrop impact are negligible. In general, interrill subprocesses are inter-actively affected by rainfall, soil and surface properties. The objective of this work was to study the relationships among interrill runoff and sediment loss and some selected para-meters, for cultivated soils in central Greece, and also the development of a formula for predicting single storm sediment delivery. Runoff and soil loss measurement field experiments have been conducted for a 3·5-year period, under natural storms. The soils studied were developed on Tertiary calcareous materials and Quaternary alluvial deposits and were textured from sandy loam to clay. The second group of soils showed greater susceptibility to sealing and erosion than the first group. Single storm sediment loss was mainly affected by rain and runoff erosivity, being significantly correlated with rain kinetic energy (r = 0·64***), its maximum 30-minute intensity (r = 0·64***) and runoff amount (r = 0·56***). Runoff had the greatest correlation with rain kinetic energy (r = 0·64***). A complementary effect on soil loss was detected between rain kinetic energy and its maximum 30-minute intensity. The same was true for rain kinetic energy and topsoil aggregate instability, on surface seal formation and thus on infiltration characteristics and overland flow rate. Empirical analysis showed that the following formula can be used for the successful prediction of sediment delivery (Di): Di = 0·638,EI30tan(,) (R2 = 0·893***), where , is a topsoil aggregate instability index, E the rain kinetic energy, I30 the maximum 30-minute rain intensity and , the slope angle. It describes soil erodibility using a topsoil aggregate instability index, which can be determined easily by a simple laboratory technique, and runoff through the product of this index and rain kinetic energy. Copyright © 2006 John Wiley & Sons, Ltd. [source]


    Phytogeographical evidence for post-glacial dispersal limitation of European beech forest species

    ECOGRAPHY, Issue 6 2009
    Wolfgang Willner
    The post-glacial migration of European beech Fagus sylvatica has been addressed by many studies using either genetic or fossil data or a combination of both. In contrast to this, only little is known about the migration history of beech forest understorey species. In a review of phytosociological literature, we identified 110 plant species which are closely associated with beech forest. We divided the distribution range of European beech forests into 40 geographical regions, and the presence or absence of each species was recorded for each region. We compared overall species numbers per region and numbers of narrow-range species (species present in <10 regions). A multiple regression model was used to test for the explanatory value of three potential diversity controls: range in elevation, soil type diversity, and distance to the nearest potential refuge area. A hierarchical cluster analysis of the narrow-range species was performed. The frequency of range sizes shows a U-shaped distribution, with 42 species occurring in <10 regions. The highest number of beech forest species is found in the southern Alps and adjacent regions, and species numbers decrease with increasing distance from these regions. With only narrow-range species taken into consideration, secondary maxima are found in Spain, the southern Apennines, the Carpathians, and Greece. Distance to the nearest potential refuge area is the strongest predictor of beech forest species richness, while altitudinal range and soil type diversity had little or no predictive value. The clusters of narrow-range species are in good concordance with the glacial refuge areas of beech and other temperate tree species as estimated in recent studies. These findings support the hypothesis that the distribution of many beech forest species is limited by post-glacial dispersal rather than by their environmental requirements. [source]


    Integrating highly diverse invertebrates into broad-scale analyses of cross-taxon congruence across the Palaearctic

    ECOGRAPHY, Issue 6 2009
    Andreas Schuldt
    Our knowledge on broad-scale patterns of biodiversity, as a basis for biogeographical models and conservation planning, largely rests upon studies on the spatial distribution of vertebrates and plants, neglecting large parts of the world's biodiversity. To reassess the generality of these patterns and better understand spatial diversity distributions of invertebrates, we analyzed patterns of species richness and endemism of a hyperdiverse insect taxon, carabid beetles (ca 11 000 Palaearctic species known), and its cross-taxon congruence with well-studied vertebrates (amphibians, reptiles) and plants across 107,units of the Palaearctic. Based on species accumulation curves, we accounted for completeness of the carabid data by separately examining the western (well-sampled) and eastern (partly less well-sampled) Palaearctic and China (deficient data). For the western Palaearctic, we highlight overall centers of invertebrate, vertebrate and plant diversity. Species richness and endemism of carabids were highly correlated with patterns of especially plant and amphibian diversity across large parts of the Palaearctic. For the well-sampled western Palaearctic, hotspots of diversity integrating invertebrates were located in Italy, Spain and Greece. Only analysis of Chinese provinces yielded low congruence between carabids and plants/vertebrates. However, Chinese carabid diversity is only insufficiently known and China features the highest numbers of annual new descriptions of carabids in the Palaearctic. Even based on the incomplete data, China harbors at least 25% of all Palaearctic carabid species. Our study shows that richness and endemism patterns of highly diverse insects can exhibit high congruence with general large scale patterns of diversity inferred from plants/vertebrates and that hotspots derived from the latter can also include a high diversity of invertebrates. In this regard, China qualifies as an outstanding multi-taxon hotspot of diversity, requiring intense biodiversity research and conservation effort. Our findings extend the limited knowledge on broad-scale invertebrate distributions and allow for a better understanding of diversity patterns across a larger range of the world's biodiversity than usually considered. [source]


    Greek Monetary Economics in Retrospect: The Adventures of the Drachma

    ECONOMIC NOTES, Issue 3 2005
    Sophia Lazaretou
    This paper enumerates the adventures of the drachma step by step, dividing its story into seven parts. Specifically, its main purpose is to present some historical perspective on the behaviour of the monetary and fiscal policies pursued in Greece during the period from the early 1830s until the introduction of the euro. For Greece, the lessons of historical experience are very important. Since the formation of the modern Greek state, government officials have striven , sometimes making hard efforts , to keep abreast of international monetary developments. This was because they understood that the participation of a peripheral, poor and inflation-prone country with a weak currency and an underdeveloped money market, like Greece of the time, in a monetary club of powerful economies could improve her international credit standing and imply important benefits in terms of exchange rate and monetary stability, and long-term foreign borrowing. [source]


    The Role of Political Instability in Stock Market Development and Economic Growth: The Case of Greece

    ECONOMIC NOTES, Issue 3 2000
    Dimitrios Asteriou
    This article examines empirically the relationship between stock market development, political instability and economic growth in Greece. We measure socio-political instability by constructing an index which captures the occurrence of various phenomena of political violence using time-series data. The main advantages of analysing political instability in a case study framework using time-series, in contrast with the widely used cross-country empirical studies, are: (a) a more careful and in-depth examination of institutional and historical characteristics of a particular country; (b) the use of a data set comprised of the most appropriate and highest quality measures; and (c) a more detailed exposition of the dynamic evolution of the economy. The empirical results indicate the existence of a strong negative relationship between uncertain socio-political conditions and the general index of the Athens Stock Exchange (ASE) and support the theoretical hypothesis that uncertain socio-political conditions affect economic growth negatively, is true for the Greek case. (J.E.L.: G10, G14, O40, C32) [source]


    Is Greece heading for default?

    ECONOMIC OUTLOOK, Issue 2 2010
    Article first published online: 4 MAY 2010
    First page of article [source]


    Captures of the olive fruit fly Bactrocera oleae on spheres of different colours

    ENTOMOLOGIA EXPERIMENTALIS ET APPLICATA, Issue 2 2001
    Byron I. Katsoyannos
    Abstract Alighting and capture of wild olive fruit flies, Bactrocera oleae (Rossi) (Diptera, Tephritidae), on spheres of seven different colours was studied on Chios island, Greece. The 70-mm-diam plastic spheres, coated with adhesive, were suspended on olive trees. Yellow and orange spheres trapped the greatest number of males while red and black spheres trapped the greatest number of females. White and blue spheres were the least effective for both sexes. Peak captures occurred in the late afternoon and especially around sunset. Since mating takes place in the last hours of the photophase, the increased captures during that period may be related to the sexual behaviour of the fly. When red spheres were assessed against glass McPhail traps baited with 2% ammonium sulphate, which consist a standard tool for monitoring the olive fruit fly in Greece, there were no significant differences in male captures. However, spheres trapped almost three times as many females as McPhail traps. The possible mechanisms underlying colour discrimination, the motivation of alighting flies and the possible use of red spheres for monitoring and controlling B. oleae are discussed. [source]


    Genetic variation in Myzus persicae populations associated with host-plant and life cycle category

    ENTOMOLOGIA EXPERIMENTALIS ET APPLICATA, Issue 3 2001
    Kiriaki Zitoudi
    Abstract Random amplified polymorphic DNA (RAPD) analysis was applied on 96 clones of Myzus persicae (Sulzer) (Homoptera: Aphididae) representing seven populations collected from different host-plants and regions of Greece. Ten decamer random primers were used to evaluate genetic variation among the examined samples. Despite the variability found between clones, no specific RAPD marker was detected to discriminate the different populations. A significant finding was that aphids from peach and pepper, which were collected far away from tobacco-growing regions, especially those from peach, showed genetic divergence from the tobacco-feeding clones. Moreover, data analysis revealed a significant genetic divergence between holocyclic and anholocyclic populations from tobacco. Lastly, holocyclic clones showed higher level of estimated heterozygosity than the nonholocyclic (anholocyclic, androcyclic and intermediate) ones. [source]


    Public and stakeholder participation in European water policy: a critical review of project evaluation processes

    ENVIRONMENTAL POLICY AND GOVERNANCE, Issue 1 2006
    Nuno Videira
    Abstract The recent reform of the European water policy recognizes the importance of developing effective mechanisms to support public and stakeholder participation in river basin decision-making processes. This paper critically reviews the evaluation processes of different types of water related project in five European countries (Portugal, Greece, The Netherlands, the United Kingdom and Spain), with respect to participatory criteria. The horizontal comparison of these cases accounted for criteria such as the political and institutional context, the design, the implementation and the evaluation of the outcomes of participation. The results indicated that, in the majority of the case studies, participation was simply adopted to conform to the requisites of the Environmental Impact Assessment Directive. Thus, there was truly no room for the active involvement and collaboration of the interested parties. The development of guidelines, drawing from the analysis of past experiences, is expected to support the implementation of the participatory objectives of the EU water policy. Copyright © 2006 John Wiley & Sons, Ltd and ERP Environment. [source]


    Conceptualizing desertification in Southern Europe: stakeholder interpretations and multiple policy agendas

    ENVIRONMENTAL POLICY AND GOVERNANCE, Issue 4 2005
    M. Juntti
    Abstract This paper explores the link between agricultural, environmental and structural policies and desertification in Southern Europe. The focus is on the way policy goals evolve in the implementation process and become translated into actions at the operative level. The results derive from policy stakeholder interviews from four research areas situated in Greece, Italy, Portugal and Spain. The significance of policies as drivers of desertification varies between the case study areas, and harmful land management practices often result from power imbalances between interest groups involved in land-use planning and policy implementation rather than from flaws in the policies themselves. The vagueness of the definition of what ,desertification' constitutes allows for different interpretations of its nature, significance and the consequent weight it is given in land management decision-making, thus lending itself to be both misinterpreted and misappropriated by different stakeholder interests. The paper discusses the interplay between five different discourses of desertification and four distinct agendas of policy implementation and land use. The agendas either enhance or mitigate desertification and represent the interests of actors who have acquired a powerful position in the network of stakeholders, often relying on, and simultaneously maintaining, discourses and structures that lend them first right to decision-making over the natural resources of the locality. Copyright © 2005 John Wiley & Sons, Ltd and ERP Environment. [source]


    Influence of heavy metals on microbial growth kinetics including lag time: Mathematical modeling and experimental verification,

    ENVIRONMENTAL TOXICOLOGY & CHEMISTRY, Issue 10 2009
    S. Sevinç, engör
    Abstract Heavy metals can significantly affect the kinetics of substrate biodegradation and microbial growth, including lag times and specific growth rates. A model to describe microbial metabolic lag as a function of the history of substrate concentration has been previously described by Wood et al. (Water Resour Res 31:553,563) and Ginn (Water Resour Res 35:1395,1408). In the present study, this model is extended by including the effect of heavy metals on metabolic lag by developing an inhibitor-dependent functional to account for the metabolic state of the microorganisms. The concentration of the inhibiting metal is explicitly incorporated into the functional. The validity of the model is tested against experimental data on the effects of zinc on Pseudomonas species isolated from Lake Coeur d'Alene sediments, Idaho, USA, as well as the effects of nickel or cobalt on a mixed microbial culture collected from the aeration tank of a wastewater treatment plant in Athens, Greece. The simulations demonstrate the ability to incorporate the effect of metals on metabolism through lag, yield coefficient, and specific growth rates. The model includes growth limitation due to insufficient transfer of oxygen into the growth medium. [source]


    Epidemiology of Plum pox virus strain M in Greece

    EPPO BULLETIN, Issue 2 2006
    C. Varveri
    Plum pox virus has been endemic in Greece since 1967 causing important losses in apricot and to a lesser extent in peach crops. A survey undertaken in 1992 in public and private mother-tree plantations to estimate its incidence revealed that the virus was absent in isolated areas far from commercial stone-fruit crops. Virus titers decrease significantly during the hot months in the infected trees but re-increase in October,November permitting reliable detection. It is virulent M-type isolates which are effectively transmitted by aphids that are mostly recovered. Aphis gossypii and Hyalopterus pruni were the most abundant virus vectors captured during the small scale monitoring undertaken in apricot orchards in 1999 and 2000. Virus spread was monitored in two apricot orchards from 1996 to 2000 and analysed. Initial infections followed a completely random spatial pattern, while loose clusters appeared in succeeding years, to finally reach a uniform distribution representing high infection levels. The nearby ecological conditions greatly affected the rate of disease development. [source]


    Breeding for resistance: conventional breeding for Plum pox virus resistant apricots (Prunus armeniaca L.) in Greece

    EPPO BULLETIN, Issue 2 2006
    I. Karayiannis
    A large apricot breeding programme has been conducted at NAGREF-Pomology Institute, Naoussa-Greece, for the control of sharka disease, since 1989. Ten apricot cultivars of North American origin: ,Stark Early Orange', ,Stella', ,NJA2', ,Sunglo', ,Veecot', ,Harlayne', ,Henderson', ,Goldrich', ,Orangered' and ,Early Blush', selected for their resistance to the highly virulent local strain of Plum pox virus (PPV)-M (Marcus), have been used as parents in crosses with quality cultivars, mainly with the local cv. Bebecou, from 1989 to 2003. Approximately 7000 hybrids have been created. Resistance to PPV was the main criterion of selection. Most hybrids have been subjected to artificial inoculation by PPV-M and examined for symptom expression for more than five years. Indexing to GF-305, as well as laboratory diagnostic tests, have been applied. The genetic analysis showed that: (1) 50% of the hybrids inherited resistance to PPV in the families where cvs. Stark Early Orange, NJA2, Sunglo, Veecot and Harlayne were used as a parent, and (2) 100% of the hybrids inherited resistance to PPV in the families where cv. Stella was one of the parents. Resistance to PPV appears to be under simple genetic control involving one gene locus. Promising apricot selections resistant to PPV-M have been released. [source]


    Genetic variation among Fusarium oxysporum isolates from cucumber

    EPPO BULLETIN, Issue 2 2000
    D. J. Vakalounakis
    Isolates of Fusarium oxysporum obtained from cucumber worldwide were classified into 3 groups by random amplified polymorphic DNA-polymerase chain reaction (RAPD-PCR). All isolates of f. sp. radicis-cucumerinum fall into one group. Isolates of races 1 and 2 of f. sp. cucumerinum fall into a second group related to isolates of f. sp. melonis and niveum. Isolates of race 3 fall into a third group, related to f. sp. momordicae. Because f. sp. radicis-cucumerinum has relatively recently been introduced into Greece, where it is actively spreading and very damaging, RAPD-PCR may be valuable in monitoring populations of F. oxysporum. [source]


    Hosts of Verticillium dahliae in Kriti (Greece),

    EPPO BULLETIN, Issue 2 2000
    E. K. Ligoxigakis
    Naturally wilted cultivated and weed species were collected from several fields in Kriti (GR) over the years 1992/1997, and tested by isolation for the presence of Verticillium dahliae. The fungus was most frequently recovered from cultivated Solanaceae and Cucurbitaceae. Infection of many known Verticillium hosts was confirmed, and the fungus was found for the first time in Kriti in pistachio and grapevine and in several common weeds. [source]


    Early adolescent cannabis exposure and positive and negative dimensions of psychosis

    ADDICTION, Issue 10 2004
    N. C. Stefanis
    ABSTRACT Aims To investigate the effect of exposure to cannabis early in adolescence on subclinical positive and negative symptoms of psychosis. Design Cross-sectional survey in the context of an ongoing cohort study. Setting Government-supported general population cohort study. Participants A total of 3500 representative 19-year olds in Greece. Measurements Subjects filled in the 40-item Community Assessment of Psychic Experiences, measuring subclinical positive (paranoia, hallucinations, grandiosity, first-rank symptoms) and negative psychosis dimensions and depression. Drug use was also reported on. Findings Use of cannabis was associated positively with both positive and negative dimensions of psychosis, independent of each other, and of depression. An association between cannabis and depression disappeared after adjustment for the negative psychosis dimensions. First use of cannabis below age 16 years was associated with a much stronger effect than first use after age 15 years, independent of life-time frequency of use. The association between cannabis and psychosis was not influenced by the distress associated with the experiences, indicating that self-medication may be an unlikely explanation for the entire association between cannabis and psychosis. Conclusions These results add credence to the hypothesis that cannabis contributes to the population level of expression of psychosis. In particular, exposure early in adolescence may increase the risk for the subclinical positive and negative dimensions of psychosis, but not for depression. [source]


    How Effective is Farmer Early Retirement Policy?

    EUROCHOICES, Issue 3 2008
    Quelle est l'efficacité de la politique de préretraite pour les agriculteurs?
    Summary How Effective is Farmer Early Retirement Policy? Financial support for EU farmers seeking early retirement is a discretionary element of CAP rural development policy and some EU member states, most notably France, Ireland and Greece have chosen to implement the measure. We explore whether the introduction of such schemes is likely to represent good value for money. We use data from Northern Ireland, a region with a relatively small-scale family-farm structure, where there have been periodic calls from farmer groups to introduce support for early retirement. We estimate the benefits that might arise from the introduction of such a scheme using FADN data and a separate survey of 350 farmers aged 50 to 65. We find that farm scale is a significant determinant of profit per hectare but that operator age is not. Benefits from releasing land through an early retirement scheme are conditional on such transfers bringing about significant farm expansion and changes in land use. Even when these conditions are satisfied, however, pensions payments of only about one-third the statutory maximum could be justified in a best-case scenario. Almost a quarter of all payments would incur deadweight losses, i.e., go to farmers who would be retiring anyway. Overall, the economic case for such a scheme is considered to be weak. Le soutien financier aux agriculteurs de l'Union européenne qui veulent prendre une retraite anticipée est un élément discrétionnaire de la politique de développement rural de la PAC et certains pays membres, en tout premier lieu la France, l'Irlande et la Grèce, ont choisi de mettre en place cette mesure. Nous recherchons si l'introduction de telles mesures serait intéressante par rapport au coût financier. L'analyse porte sur des données nord-irlandaises, région d'exploitations familiales de taille relativement petite dans laquelle les représentants agricoles ont régulièrement appeléà la mise en place de soutien pour la retraite anticipée. Nous estimons les avantages que pourrait procurer l'introduction de cette mesure à l'aide de données du RICA et d'une enquête indépendante portant sur 350 agriculteurs âgés de 50 à 65 ans. Nous trouvons que la taille de l'exploitation est un déterminant significatif du profit par hectare mais que l'âge de l'exploitant n'en est pas un. Les avantages de la mise à disposition de terres grâce à un programme de préretraite dépendent de la capacité de ces transferts à entraîner un accroissement notable de la taille des exploitations et des modifications de l'utilisation des terres. Cependant, même lorsque ces conditions sont remplies, seuls des paiements représentant un tiers du niveau maximum prévu dans le programme de préretraite pourraient se justifier dans un scénario optimal. Pratiquement un quart du total des paiements serait liéà des pertes de bien-être, c'est-à-dire que les bénéficiaires seraient des agriculteurs qui aurait pris leur retraite de toute façon. Globalement, l'intérêt économique d'un tel programme est considéré comme faible. Die finanzielle Unterstützung von Landwirten in der EU, die in den Vorruhestand gehen möchten, stellt in der Politik der GAP zur Entwicklung des ländlichen Raums ein diskretionäres Element dar; in einigen Mitgliedsstaaten wie z.B. Frankreich, Irland und Griechenland wird diese Maßnahme angeboten. Wir untersuchen, ob es möglicherweise finanziell sinnvoll wäre, solche Programme einzuführen. Dazu ziehen wir Daten aus Nordirland heran, einer Region mit relativ kleinen landwirtschaftlichen Familienbetrieben, in der sich Landwirte regelmäßig dafür aussprechen, Vorruhestandprogramme einzuführen. Wir schätzen den Nutzen, der sich aus der Einführung eines solchen Programms ergeben könnte, anhand von INLB-Daten und einer gesonderten Befragung von 350 Landwirten im Alter von 50 bis 65 Jahren. Wir stellen fest, dass es sich bei der Betriebsgröße , im Gegensatz zum Alter des Betreibers , um einen entscheidenden Faktor für die Höhe des Gewinns pro Hektar handelt. Ein Nutzen aus der Landübertragung aufgrund eines Vorruhestandprogramms beruht auf solchen Transfers, die eine bedeutsame Betriebserweiterung und veränderte Flächennutzung zur Folge haben. Selbst wenn diese Bedingungen erfüllt werden, könnten günstigstenfalls nur Rentenzahlungen in Höhe von etwa einem Drittel der gesetzlich verankerten Höchstsumme gerechtfertigt werden. Beinahe ein Viertel aller Zahlungen wäre mit Mitnahmeeffekten verbunden, d.h. Landwirten zukommen, die ohnehin den Ruhestand antreten würden. Aus ökonomischer Sicht muss ein solches Programm als schwach eingestuft werden. [source]


    Who is Looking for Nutritional Food Labels?: Wer sucht nach Nährwertangaben auf Lebensmitteln?: Mais qui donc s'occupe du contenu nutritionnel sur les étiquettes?

    EUROCHOICES, Issue 1 2005
    Andreas C. Drichoutis
    Summary Who is Looking for Nutritional Food Labels? Obesity amongst the population in Europe is increasing at an alarming rate. Consequently, nutritional and lifestyle factors are implicated in the huge increase in several chronic diseases in Europe. The Southern Europeans tend to be amongst the worst, mth Greece being first in adult obesity mainly due to the replacement of the Mediterranean diet with ready-made and fast foods. People want to see change towards an environment that makes it easier to make healthy choices. The EU, in order to assist consumers make healthy food choices, tried to make nutritional information available to consumers through a food labelling law framework, which currently works on a voluntary basis with the perspective to change towards a mandatory system. We conducted a study in Greece in order to assess consumer use of nutritional food labels and determine which consumers use certain types of nutrient content information. We found that almost a third of consumers often use food labels and these are the more educated, who are more nutritionally knowledgeable. Many others do not, and to increase their chances of reading the labels one should improve their knowledge of nutrition havlng in mind that they are not big users of the media but get their information from informd sources. Mais qui donc s'occupe du contenu nutritionnel sur les etiquettes? La prevalence de I'obesitk augmente a un t a u toujours plus preoccupant en Europe. Les facteurs nutritionnels et les styles de vie sont par consequent impliquks dans l'Cnorme accroissement constati: de diverses pathologies chroniques. La situation est specialement mauvaise en Europe du sud, ou la Grece detient le record du taux d'obesite dans la population adulte, en particulier du fait du remplacement du fameux ,regime mediterraneen' par les plats prepares et la restauration rapide. Les gens souhaitent un environnement susceptible de leur faciliter le choix d'une alimentation saine. C'est pour cela que l'Union europkenne a tente de mettre des informations nutritionnelles a la disposition des consommateurs, en instituant un cadre legal pour l'etiquetage alimentaire Il fonctionne actuellement sur la base du volontariat, mais il a pour vocation d'evoluer vers un systeme obligatoire. Il est rendu compte ici d'une enquOte effectuee en Grkce pour determiner quels types de consommateurs utilisent quels genres dindications de contenu nutritionnel portees sur les etiquettes alimentaires, et dans quelle mesure. Environ un tiers des consommateurs utilisent souvent les contenus nutritionnels. Ce sont les plus eduques et les mieux informks. La plupart des autres negligent les etiquettes. Pour accroitre les chances que ces dernieres soient lues, il faudrait donc arneliorer les connaissances nutritionnelles, en gardant a l'esprit que les personnes concernkes utilisent peu les mkdias et tirent leurs informations de sources informelles. Wer sucht nach Nährwertangaben auf Die Fettleibigkeit in der europaischen Bevolkerung nimmt alarmierend schnell zu. Folglich spiegeln sich Ernahrung und Lebensstil in dem hohen Anstieg zahlreicher chronischer Erkrankungen in Europa wider. Fur die Sudeuropaer ergeben sich einige der schlechtesten Werte, wobei in Griechenland die Erwachsenenfettleibigkeit am ausgepriigtesten ist. Dies liegt hauptsachlich daran, dass die mediterrane Erniihrung von Fertiggerichten und Fast-Food abgelost wurde. Die Bevolkerung wiinscht sich eine Veriinderung hin zu einer Umgebung, die sie darin unterstutzt, der Gesundheit zutr;dgliche Entscheidungen zu treffen. Die EU wollte den Verbrauchern gesundheitlich relevante Informationen durch eine Kennzeichnung der Inhaltsstoffe der Lebensmittel verschaffen. Dieses System sieht gegenwartig lediglich eine freiwillige Kennzeichnung vor, ist aber als obligatorisch geplant. Wir fiihrten in Griechenland eine Studie durch, um zu beurteilen, inwiefern Nahrwertangaben auf Lebensmitteln den Verbrauchern nutzen, und um festzustellen, welche Verbraucher auf bestimmte Nahrwertangaben achten. Wir fanden heraus, dass beinahe ein Drittel aller Verbraucher auf die Lebensmittelkennzeich nung achten. Diese Verbraucher verfiigen uber eine hohere Bildung und kennen sich in Erniihrungsfragen relativ gut aus. Ein großer Anted der Verbraucher verfiigt uber keinerlei gesundheitliche Grundkenntnisse; um diesen Verbrauchern das Lesen der Etiketten zu ermoglichen, sollte man ihre Kenntnisse in Sachen Ernahrung verbessern und sich dabei vor Augen fiihren, dass diese Verbraucher die Medien nicht allzu intensiv nutzen, sondern ihre Informationen aus informellen Quellen beziehen. [source]


    International conference on the healthy effect of virgin olive oil

    EUROPEAN JOURNAL OF CLINICAL INVESTIGATION, Issue 7 2005

    Summary 1Ageing represents a great concern in developed countries because the number of people involved and the pathologies related with it, like atherosclerosis, morbus Parkinson, Alzheime's disease, vascular dementia, cognitive decline, diabetes and cancer. 2Epidemiological studies suggest that a Mediterranean diet (which is rich in virgin olive oil) decreases the risk of cardiovascular disease. 3The Mediterranean diet, rich in virgin olive oil, improves the major risk factors for cardiovascular disease, such as the lipoprotein profile, blood pressure, glucose metabolism and antithrombotic profile. Endothelial function, inflammation and oxidative stress are also positively modulated. Some of these effects are attributed to minor components of virgin olive oil. Therefore, the definition of the Mediterranean diet should include virgin olive oil. 4Different observational studies conducted in humans have shown that the intake of monounsaturated fat may be protective against age-related cognitive decline and Alzheimer's disease. 5Microconstituents from virgin olive oil are bioavailable in humans and have shown antioxidant properties and capacity to improve endothelial function. Furthermore they are also able to modify the haemostasis, showing antithrombotic properties. 6In countries where the populations fulfilled a typical Mediterranean diet, such as Spain, Greece and Italy, where virgin olive oil is the principal source of fat, cancer incidence rates are lower than in northern European countries. 7The protective effect of virgin olive oil can be most important in the first decades of life, which suggests that the dietetic benefit of virgin olive oil intake should be initiated before puberty, and maintained through life. 8The more recent studies consistently support that the Mediterranean diet, based in virgin olive oil, is compatible with a healthier ageing and increased longevity. However, despite the significant advances of the recent years, the final proof about the specific mechanisms and contributing role of the different components of virgin olive oil to its beneficial effects requires further investigations. [source]


    Distribution and frequency of , -thalassemia mutations in northwestern and central Greece

    EUROPEAN JOURNAL OF HAEMATOLOGY, Issue 2 2003
    I. Georgiou
    Abstract: Objectives : , -Thalassemia is a common autosomal recessive disorder resulting from over 200 different mutations of the , -globin genes. The spectrum of , -thalassemia mutations in Greece has been previously described in the population of the capital city of Athens, or in , -thalassemia patients having transfusion therapy. The aim of the present study was to identify the distribution of the most common , -thalassemia mutations in the population of northwestern and central Greece. Methods : The data for this study were derived from a total of 1130 unrelated subjects including 46 , -thalassemia major, three , -thalassemia intermedia and 1081 carriers identified in our antenatal screening program. , -Thalassemia mutations were identified by ARMS, DGGE and Reverse Dot Blot. Results : The most common mutation, IVS-I-110, is followed, in order of frequency, by the mutations Cd-39, IVS-I-1, IVS-II-1, Cd-6, IVS-I-6, IVS-I-5, IVS-II-745, Cd-5 and 44 bp del. IVS-I-110 and Cd-39 frequencies are similar with those found in other Balkan countries. Significant differences in regional distribution were observed. The results showed a clear drift of the distribution of the most frequent IVS-I-110 mutation in the south,north (29.4, 40.0, 44.6 and 61.7%) and the east,west axis (31.8 and 44.6%). Conclusions : Population screening and prenatal diagnosis are significantly facilitated by these data. Furthermore, the detailed distribution tables of , -thalassemia mutations are essential for counseling and extraction of genetic diversity estimates for population genetic studies in other inherited disorders. [source]