86 research outputs found
White paper on the future of plasma science and technology in plastics and textiles
This is the peer reviewed version of the following article: “Uros, C., Walsh, J., Cernák, M., Labay, C., Canal, J.M., Canal, C. (2019) White paper on the future of plasma science and technology in plastics and textiles. Plasma processes and polymers, 16 1 which has been published in final form at [doi: 10.1002/ppap.201700228]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving."This white paper considers the future of plasma science and technology related to the manufacturing and modifications of plastics and textiles, summarizing existing efforts and the current state‐of‐art for major topics related to plasma processing techniques. It draws on the frontier of plasma technologies in order to see beyond and identify the grand challenges which we face in the following 5–10 years. To progress and move the frontier forward, the paper highlights the major enabling technologies and topics related to the design of surfaces, coatings and materials with non‐equilibrium plasmas. The aim is to progress the field of plastics and textile production using advanced plasma processing as the key enabling technology which is environmentally friendly, cost efficient, and offers high‐speed processingPeer ReviewedPostprint (author's final draft
Plasma-Induced Interfacial Processes in Metal Halides FTIR Gas Cell Windows
Fourier transform infrared spectroscopy (FTIR) is one of the most widely used vibrational diagnostic techniques to investigate gas-phase reactive oxygen and nitrogen species (RONS). However, the technique carries intrinsic challenges, particularly in relation to interfering peaks in the spectral data. This study explores the interfacial processes that occur when reactive oxygen and nitrogen species generated by a non-equilibrium air plasma interact with the metal halide windows of an FTIR gas cell, leading to the appearance and evolution of spurious absorption peaks which complicate spectral interpretation. Raman spectroscopy, X-ray photoelectron spectroscopy, time of flight secondary ion mass spectrometry and attenuated total reflectance-FTIR spectroscopy were used to elucidate the origin of spurious absorption peaks spanning the 1400–1300 cm−1 spectral range as a result of KBr exposure to plasma generated species. It was found that plasma exposed KBr contained a lower atomic fraction of Br which was replaced by the NO3 nitrate group, the main absorbance peak of which progressively evolved with plasma exposure and affected the window transparency over the corresponding FTIR region. A correlation was revealed between KNO3 formation, plasma power and exposure time to a growth and change in molecular vibrational energies corresponding to asymmetric NO3 stretching vibrations in the KNO3 structure
Novel biomaterials: plasma-enabled nanostructures and functions
Material processing techniques utilizing low-temperature plasmas as the main process tool feature many unique capabilities for the fabrication of various nanostructured materials. As compared with the neutral-gas based techniques and methods, the plasma-based approaches offer higher levels of energy and flux controllability, often leading to higher quality of the fabricated nanomaterials and sometimes to the synthesis of the hierarchical materials with interesting properties. Among others, nanoscale biomaterials attract significant attention due to their special properties towards the biological materials (proteins, enzymes), living cells and tissues. This review briefly examines various approaches based on the use of low-temperature plasma environments to fabricate nanoscale biomaterials exhibiting high biological activity, biological inertness for drug delivery system, and other features of the biomaterials make them highly attractive. In particular, we briefly discuss the plasma-assisted fabrication of gold and silicon nanoparticles for bio-applications; carbon nanoparticles for bioimaging and cancer therapy; carbon nanotube-based platforms for enzyme production and bacteria growth control, and other applications of low-temperature plasmas in the production of biologically-active materials
The 4 C’s Tourism Destination Competitiveness Matrix the Construction of the Matrix Through the Delphi Panel
The creation of the “4 C’s Tourism Destination Competitiveness Matrix” aimed to consolidate and organise questions about the area or areas in which tourist destinations should focus their attention, from the point of view of competitiveness analysis. To consolidate this new model, or matrix, 4 phases were completed: preliminary, preparation, test and evaluation.
In the preliminary phase, a literature review was carried out on the main theoretical models for TDC analysis. In the preparation phase, the Delphi method was used, inviting experts in the field of economics and tourism to contribute with their experiences in the construction of the survey instrument; in the test phase, the questionnaire was validated through the Content Validity Coefficient or CVC; in the evaluation phase, a non-probabilistic approach was used, i.e., a convenience sample to obtain answers from tourists, residents and destination managers.
This article presents the development of the referred matrix preparation phase using the Delphi method. Based on properly structured surveys, the new matrix allows for the information collected to be divided into 4 sets or dimensions: capacity, competence, communication and creativity. It is considered that the use of the Delphi panel was one of the fundamental steps for the successful creation of the “4 Cs Tourism Destination Competitiveness Matrix”. This new instrument is intended as an agile and less complex approach in the analysis of tourism destination competitiveness
Influência das espécies do plasma na modificação das propriedades superficiais do titânio tratado por plasma de N2 - Ar - O2
Recent progress and perspectives of space electric propulsion systems based on smart nanomaterials
Miniaturized spacecraft built from advanced nanomaterials are poised for unmanned space exploration. In this review, the authors examine the integration of nanotechnology in electric propulsion systems and propose the concept of self-healing and adaptive thrusters
Drivers of Destination Competitiveness in Tourism: A Global Investigation
Debates about competitiveness and productivity are practically unexplored with respect to tourism. This article posits a productivity-related measure—total tourism contribution to GDP per employee in tourism—in order to examine destination competiveness. Comprehensive results based on a destination competitiveness model are obtained by analyzing tourism-specific and wider economy-based competitiveness factors. These are represented by six destination competitiveness factors measured by 55 indicators for 139 destinations over the period 2007–2011. Study findings demonstrate that tourism-specific factors, such as Tourism Infrastructure and Destination Management, are the major competitiveness drivers in developing countries, while destination competitiveness in developed countries depends on the tourism-specific factor of Destination Management as well as on wider economic conditions such as General Infrastructure, Macro-Environment, and Business Environment. The study offers a novel approach in the operationalization and estimation of a theoretically grounded and empirically validated tourism competitiveness model and discusses the implications for tourism policy
Fashioning a destination tourism future: The case of Slovenia
Achieving competitive advantage for any destination in times of rapid global change requires tourism stakeholders to have a clear understanding of the direction of change and its implications for business or destination management. The challenges are particularly acute for emerging destinations such as Slovenia. The paper discusses tools for measuring destination performance with particular focus on Importance-Performance Analysis (IPA). Using IPA the paper develops a priority ordering for Slovenian tourism stakeholders to debate, modify and to adopt actions that can help them prepare for the challenges arising from global trends. The survey instrument used for this study asks respondents to highlight both the important areas that should be addressed by tourism stakeholders in Slovenia and also the performance of Slovenia in respect of the success or otherwise of the strategies that are currently being pursued to enhance destination competitiveness. The findings reveal that there are a number of areas in which the Slovene tourism industry considers itself to be underperforming in the implementation of strategies to eliminate drift. The paper explores some of the implications of the findings for strategic action and implementation, making some concluding comments on destination development strategy while highlighting areas for further research. © 2011 Elsevier Ltd
Achieving destination competitiveness: an importance–performance analysis of Serbia
As a relatively new and under-researched tourism destination, Serbia provides an interesting context to assess destination competitiveness in conditions of global environmental changes and the additional challenges of transition from a socialist economy to a market-based economy. This article uses importance–performance analysis (IPA) to assess the importance of different activities to underpin tourism development in Serbia, as well as the industry's perceived performance in respect of these activities. There are a number of areas in which Serbian tourism industry considers itself to be underperforming in the implementation of activities to maintain destination competitiveness. This article analyses these results in detail using IPA as a diagnostic tool. Particular attention is paid to investigating the implications of the findings for both destination managers and private tourism operators in Serbia that can assist them to develop a focused action agenda to achieve and maintain destination competitive advantage. The approach can be used in other destinations to assess tourism ability to meet the challenges of global trends
Modified Importance–Performance Analysis for Evaluating Tourism Businesses Strategies: Comparison of Slovenia and Serbia
A modified nine-quadrant importance–performance analysis is employed to assess the importance which Slovenian and Serbian tourism industry stakeholders attach to 48 nominated strategic activities to promote business and destination competitiveness. An important finding is that respondents in each country allocated the bulk of activities to the ‘keep up the good work’ strategy. In both destinations, this strategy was dominated by activities related to product development and innovation. The paper concludes with a discussion of how the identified priority activities require close examination to determine their ‘enabling conditions’ and the implications of an action based on them
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