282 research outputs found

    Are the Mediterranean countries competitive in fresh fruit and vegetable exports?

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    The Barcelona Agreement was signed in 1995, setting forth a structure with bilateral agreements between the EU and twelve Mediterranean countries. The agreement also foresaw the creation of a free trade area in the Euro-Mediterranean region by 2010. For many of the countries surrounding the Mediterranean sea, fruit and vegetables are very important products. In light of the increasing trade liberalization and thus increasing competition between countries, this paper aims to investigate further the competitiveness of Mediterranean countries with respect to fresh fruit and vegetables. The results generally show that the competitiveness of the investigated countries has deteriorated over the period. In only two cases, there is an increase in competitiveness.International Relations/Trade,

    Seal Hunters, Fishermen and Sea-voyagers: Late Middle Neolithic (2600–2400 cal BC) Maritime Hunter-Gatherers in the Baltic Sea Archipelago at TrĂ„sĂ€ttra, Sweden

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    Large scale excavations of Neolithic settlements and cemeteries along the Swedish east coast and on the islands of Gotland and Öland in the Baltic Sea during the last 30 years have produced a large amount of new information concerning the Funnel Beaker Culture, the Pitted Ware Culture and the Battle Axe Culture. Excavations of large areas in a number of sites have given us a much deeper understanding of how these societies were organized, how people made their living and how they buried their dead. Large scale studies of palaeoecological remains, lipids in ceramics and isotopes in animal and human bones have given us new information concerning differences in diet and economy, and studies of genetic material have produced new essential knowledge of ethnic and cultural affiliations. The excavation at TrĂ„sĂ€ttra covered the whole area of a permanent hunter-gatherer settlement that can be related to the late Pitted Ware Culture, ca. 2600– 2400calBC. This gave us the opportunity to study the organization of the settlement, economy and diet, craftsmanship and ritual activities in detail. Also, finds of a large number of anthropomorphic and zoomorphic clay figurines, a cult building with ritual deposits and a small cemetery made a unique analysis of religious and ideological aspects of the hunter-gatherers in the archipelago of the eastern middle part of Sweden during the late Middle Neolithic B possible

    LUCY: Large scale Urban Consumption of Energy

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    Model and datasets to document changes in global anthropogenic heat flux (QF) for spatial (30?? × 30?? to 0.5° × 0.5°) resolution and temporal coverage (historical, current and future). See further details in the Lindberg et al. publications linked from this record

    Graphene oxide and adsorption of chloroform: A density functional study

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    Chlorinated hydrocarbon compounds are of environmental concerns, since they are toxic to humans and other mammals, and are widespread, and exposure is hard to avoid. Understanding and improving methods to reduce the amount of the substances are important. We present an atomic-scale calculational study of the adsorption of chlorine-based substance chloroform (CHCl3) on graphene oxide, as a step in estimating the capacity of graphene oxide for filtering out such substances, e.g., from drinking water. The calculations are based on density functional theory, and the recently developed consistent-exchange functional for the van der Waals density-functional method is employed. We obtain values of the chloroform adsorption energy varying from roughly 0.2 to 0.4 eV per molecule. This is comparable to previously found results for chloroform adsorbed directly on clean graphene, using similar calculations. In a wet environment, like filters for drinking water, the graphene will not stay clean and will likely oxidize, and thus adsorption onto graphene oxide, rather than clean graphene, is a more relevant process to study

    Carbide Precipitation during Processing of Two Low-Alloyed Martensitic Tool Steels with 0.11 and 0.17 V/Mo Ratios Studied by Neutron Scattering, Electron Microscopy and Atom Probe

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    Two industrially processed low-alloyed martensitic tool steel alloys with compositions Fe-0.3C-1.1Si-0.81Mn-1.5Cr-1.4Ni-1.1Mo-0.13V and Fe-0.3C-1.1Si-0.81Mn-1.4Cr-0.7Ni-0.8Mo-0.14V (wt.%) were characterized using small-angle neutron scattering (SANS), scanning electron microscopy (SEM), Scanning transmission electron microscopy (STEM), and atom probe tomography (APT). The combination of methods enables an understanding of the complex precipitation sequences that occur in these materials during the processing. Nb-rich primary carbides form at hot working, while Fe-rich auto-tempering carbides precipitate upon quenching, and cementite carbides grow during tempering when Mo-rich secondary carbides also nucleate and grow. The number density of Mo-rich carbides increases with tempering time, and after 24 h, it is two to three orders of magnitude higher than the Fe-rich carbides. A high number density of Mo-rich carbides is important to strengthen these low-alloyed tool steels through precipitation hardening. The results indicate that the Mo-rich secondary carbide precipitates are initially of MC character, whilst later they start to appear as M2C. This change of the secondary carbides is diffusion driven and is therefore mainly seen for longer tempering times at the higher tempering temperature of 600◩C

    Insights gained from a systematic reanalysis of a successful model-facilitated change process in health care

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    Health care is a complex system with multiprofessional staff and multiple patient care pathways. Time pressure and minimal margins for error make it challenging to implement new policies or procedures, no matter how desirable. Changes in health care also requires the participation of the staff. System dynamics (SD) simulations can lead to shared systems understanding and allows for the development and testing of new scenarios in silico before implementing solutions. However, research shows that the actual implementation rate of simulations is low. This paper presents a reanalysis of a successful change project in health care combining SD principles with basic action research (AR) premises. The analysis was done by a multidisciplinary research group using qualitative methodology and identifies that a fruitful combination of AR inquiry and SD modelling potentially can improve implementation rates.publishedVersio

    Prognostic Value of Stromal Type IV Collagen Expression in Small Invasive Breast Cancers

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    Breast cancer is the most common cause of cancer death among women worldwide. Localized breast cancer can be cured by surgery and adjuvant therapy, but mortality remains high for tumors that metastasize early. Type IV collagen is a basement membrane protein, and breach of this extracellular matrix structure is the first step of cancer invasion. Type IV collagen is found in the stroma of many cancers, but its role in tumor biology is unclear. Here, expression of type IV collagen in the stroma of small breast cancers was analyzed, correlated to clinically used prognostic biomarkers and patient survival. The findings were further validated in an independent gene expression data cohort. Tissue samples from 1,379 women with in situ and small invasive breast cancers (Peer reviewe
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