12 research outputs found

    The Effect of SEBS/Halloysite Masterbatch Obtained in Different Extrusion Conditions on the Properties of Hybrid Polypropylene/Glass Fiber Composites for Auto Parts

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    Masterbatches from a linear poly[styrene-b-(ethylene-co-butylene)-b-styrene] (SEBS) and halloysite nanotubes (HNT-QM) were obtained in different conditions of temperature and shear using two co-rotating twin-screw extruders. The influence of screw configuration and melt processing conditions on the morpho-structural, thermal and mechanical properties of masterbatches at macro and nanoscale was studied. A good dispersion of halloysite nanotubes and better thermal stability and tensile and nanomechanical properties were obtained at a lower temperature profile and higher screw speed. The effect of masterbatches, the best and worst alternatives, on the properties of a polypropylene (PP)–glass fiber (GF) composite was also evaluated. Double hardness, tensile strength and modulus and four times higher impact strength were obtained for PP/GF composites containing masterbatches compared to pristine PP. However, the masterbatch with the best properties led further to enhanced mechanical properties of the PP/GF composite. A clear difference between the effects of the two masterbatches was obtained by nanoindentation and nanoscratch tests. These analyses proved to be useful for the design of polymer composites for automotive parts, such as bumpers or door panels. This study demonstrated that setting-up the correct processing conditions is very important to obtain the desired properties for automotive applications

    The Role of Mobile Health Technologies in Allergy Care:an EAACI Position Paper

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    Mobile health (mHealth) uses mobile communication devices such as smartphones and tablet computers to support and improve health-related services, data and information flow, patient self-management, surveillance, and disease management from the moment of first diagnosis to an optimized treatment. The European Academy of Allergy and Clinical Immunology created a task force to assess the state of the art and future potential of mHealth in allergology. The task force endorsed the "Be He@lthy, Be Mobile" WHO initiative and debated the quality, usability, efficiency, advantages, limitations, and risks of mobile solutions for allergic diseases. The results are summarized in this position paper, analyzing also the regulatory background with regard to the "General Data Protection Regulation" and Medical Directives of the European Community. The task force assessed the design, user engagement, content, potential of inducing behavioral change, credibility/accountability, and privacy policies of mHealth products. The perspectives of healthcare professionals and allergic patients are discussed, underlining the need of thorough investigation for an effective design of mHealth technologies as auxiliary tools to improve quality of care. Within the context of precision medicine, these could facilitate the change in perspective from clinician- to patient-centered care. The current and future potential of mHealth is then examined for specific areas of allergology, including allergic rhinitis, aerobiology, allergen immunotherapy, asthma, dermatological diseases, food allergies, anaphylaxis, insect venom, and drug allergy. The impact of mobile technologies and associated big data sets are outlined. Facts and recommendations for future mHealth initiatives within EAACI are listed

    Poly(3-hydroxybutyrate) Nanocomposites with Cellulose Nanocrystals

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    Poly(3-hydroxybutyrate) (PHB) is one of the most promising substitutes for the petroleum-based polymers used in the packaging and biomedical fields due to its biodegradability, biocompatibility, good stiffness, and strength, along with its good gas-barrier properties. One route to overcome some of the PHB’s weaknesses, such as its slow crystallization, brittleness, modest thermal stability, and low melt strength is the addition of cellulose nanocrystals (CNCs) and the production of PHB/CNCs nanocomposites. Choosing the adequate processing technology for the fabrication of the PHB/CNCs nanocomposites and a suitable surface treatment for the CNCs are key factors in obtaining a good interfacial adhesion, superior thermal stability, and mechanical performances for the resulting nanocomposites. The information provided in this review related to the preparation routes, thermal, mechanical, and barrier properties of the PHB/CNCs nanocomposites may represent a starting point in finding new strategies to reduce the manufacturing costs or to design better technological solutions for the production of these materials at industrial scale. It is outlined in this review that the use of low-value biomass resources in the obtaining of both PHB and CNCs might be a safe track for a circular and bio-based economy. Undoubtedly, the PHB/CNCs nanocomposites will be an important part of a greener future in terms of successful replacement of the conventional plastic materials in many engineering and biomedical applications

    Building capacity to support smoking cessation amongst Family Physicians in Romania: The Challenges of VBA in Primary Care Practice

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    Introduction Romania has a population of 19.5 million. Smoking rates are 37% men and 16.7% women. According to the WHO, 77% of all deaths in 2008 were caused by diseases for which tobacco smoking is the main risk factor. 1 Family Physicians (FPs) have regular and ongoing contact with their patients, therefore they have a unique opportunity to address smoking cessation (SC) efforts.The overall goal is to build capacity to support SC amongst FPs, aiming to improve the health outcomes of patients with tobacco dependence by increasing the number of quit attempts and successful quits. Material and Methods Selection of 15-20 teachers in family medicine interested in SC; adapting and developing a teaching curriculum in accordance with the agreed content but suited to local needs: lack of specialized SC services 2 required Very Brief Advice PLUS (VBA+pharmacological treatment+behavioural support); supporting these teachers in delivering workshops to local FPs; offering to taught FPs a pattern of supporting system for monitoring smokers and SC attempts; adapting and developing a model of educational evaluation to monitor and report progress and outcomes. 3 Results This is an ongoing project using a “cascade” approach. At the moment there are: 4 participants in the IPCRG international teachers’ workshop (1stlevel) and 32 participants in the in-country teaching other teachers (2 nd level); the 3 rd level has begun and will continue by August 2018. The estimated participant and beneficiary numbers are 250 FPs taught and 43,000 patients. Conclusions Building capacity to support SC amongst FPs in Romania using the standardisation of Ask and Advise methods, and adaptation of Act to the national context might increase quit attempts and the number of successful quits when delivered at primary care level. Funding The project is part of the International Primary Care Respiratory Group Teach the Teacher Programme “Capacity Building - Teaching the teachers of primary healthcare professionals to treat tobacco dependence” and founded by a Global Bridges grant
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