scholarly journals Dr Salman visiting his family

Medunab ◽  
2022 ◽  
Vol 24 (3) ◽  
pp. 392
Author(s):  
Nick Richards
Keyword(s):  
Complex Scene ◽  
Real Challenge

When Dr Salman sent me some reference photos, I instantly knew I had to choose the photo this painting is based on - although it was a complex scene with several figures, the narrative it presented was very powerful and emotional. I wanted to avoid sentimentality, and I think that the bold impasto technique I used, with thick oil paint and a large brush, helped with this. It was mostly about conveying raw emotion in an expressive way, without including lots of detail. Also making it an easily readable image just using loose brushstrokes, without delineating everything was a real challenge. I hope I succeeded.

The Real Challenge of Plato's Republic

2019 ◽  
Vol 1 (2) ◽  
pp. 149-170
Author(s):  
Russell E. Jones
Keyword(s):  
The Real ◽  
Central Aspect ◽  
Real Challenge

Glaucon's Challenge at the beginning of Book 2 of Plato's Republic has long prompted interpretive difficulties, due to a misunderstanding of its central aspect. The task of this essay is to correct that misunderstanding, at which point The Challenge can be seen to be as simple and powerful as Glaucon seems to think it is. The Challenge is simple, insofar as it requires Socrates to show that justice is always good, that one is always better off cultivating a just character and acting justly than otherwise (and that's all there is to it). And it is powerful, insofar as Glaucon and Adeimantus provide plausible reasons to think not simply that justice is not always good, but that fully developed injustice is always good.

World of van der Waals Species

1993 ◽  
Vol 58 (7) ◽  
pp. 1465-1475
Author(s):  
Pavel Hobza ◽  
Rudolf Zahradník
Keyword(s):  
Chemical Treatment ◽  
Quantum Chemical ◽  
Van Der Waals ◽  
Real Challenge

Van der Waals species (molecules, ions, radicals) attract the attention of chemists, chemical physicists and molecular biologists. Study of these systems presents a real challenge for both experimentalists and theorists. The main features of the contemporary possibilities for quantum chemical treatment are illustrated mostly on systems studied in the authors' laboratory. Prospects in the area are briefly outlined.

scholarly journals Preparation of alcohol-based handrub in COVID-19 Alsatian cluster

2020 ◽  
Vol 5 (1) ◽  
Author(s):  
Elodie Di-Falco ◽  
Johan Bourbon ◽  
Isalyne Sbaffe ◽  
Jean-Daniel Kaiser
Keyword(s):  
Critical Period ◽  
Hospital Management ◽  
Management Team ◽  
The Other ◽  
Packaging Materials ◽  
Local Production ◽  
Technical Grade ◽  
Hand Sanitizer ◽  
Set Up ◽  
Real Challenge

AbstractAlsace, in particular Haut-Rhin, is one of the main clusters of COVID-19 in France. There has been a shortage of essential supplies in the area, especially alcohol-based hand sanitizer. In this context, and in accordance with the decree dated March 6, 2020, our hospital management team asked us to start local production of alcohol-based handrub. This was a real challenge: In one week, we had to implement the production of handrub to meet the needs of a 1,400-bed hospital. The production had to comply with the French preparation guidelines and take place on specific premises, with qualified and calibrated equipment, by qualified staff, under the supervision of a pharmacist. The other big challenge we faced was the supply of pharmaceutical raw and packaging materials. During this particular critical period, all suppliers were out of stock. Here, we describe the organizational set-up and the decisions made, e. g., to use technical-grade ethanol before the publication of the decrees dated March 13 and March 23, 2020.

Closure of Complex Wounds by a Simple Skin Stretching System Associated With Vacuum Sealing Drainage—Clinical Outcome of 34 Patients

2021 ◽  
pp. 153473462110320
Author(s):  
Yaojun Wu ◽  
Liang Chen ◽  
Xinliang Mao ◽  
Zhengliang Ru ◽  
Liying Yu ◽  
...  
Keyword(s):  
Vacuum Sealing ◽  
Day Range ◽  
Skin Stretching ◽  
Group A ◽  
Group B ◽  
Vacuum Sealing Drainage ◽  
Real Challenge ◽  
Safe Approach ◽  
Large Skin ◽  
Complex Wounds

Management of complex wounds with large skin defects presents a real challenge for orthopedic or reconstructive surgeons. We developed a simple skin stretching system associated with vacuum sealing drainage to examine the efficiency and complication. A total of 34 patients with different types of complex wounds were retrospectively included from January 2015 to March 2021. All patients in the study were underwent the treatment by 2 stages. The method was used to the wounds from 4.71 to 169.65 cm2 with a median defect size of 25.13 cm2. The median time for wound closure was 11.5 days (range: 5-32 days), although the median absolute reduction was 2.08 cm2/day (range: 0.15-25.66 cm2/day). Depending on the site of the wounds, the cause of the wound, and the rate of max-width/max-length ( W/ L), these complex wounds could be separately divided into several groups. There were statistically significant differences in the median value of the above variables ( P < .05 Kruskal–Wallis test). The results showed that different anatomical sites had different viscoelastic properties, the complex wounds caused by trauma were easier to close than caused by diabetic foot and the complex wounds in group A ( W/ L ＞ 0.5) were more difficult to close than in group B ( W/ L ≤ 0.5). No major complications were encountered in this study. In summary, the results of our study showed that the simple skin stretching system associated with vacuum sealing drainage was a safe approach for closure of complex wounds. Nevertheless, more attention should be paid to the viscoelasticity of the wounds to ensure closure and avoid undue complications when applying the method.

scholarly journals Social entrepreneurship and social enterprise phenomenon: toward a collective approach to social innovation in Tunisia

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Bechir Fridhi
Keyword(s):  
Social Entrepreneurship ◽  
Social Innovation ◽  
Participant Observation ◽  
Social Entrepreneurs ◽  
New Ideas ◽  
Entrepreneurial Action ◽  
Collective Construction ◽  
Depth Interviews ◽  
Real Challenge ◽  
Collective Dimension

AbstractThis article aims to understand the extent to which social entrepreneurship (SE) contributes to the construction of a collective dimension linked to social innovation (SI). We aim to propose new ideas that can deliver insights into the SE phenomenon. This research is also distinct from entrepreneurial ecosystems as its development already requires some successful entrepreneurial action and to do it, the structuring and consolidation of an entrepreneurial ecosystem constitutes a real challenge for the development of SI.This work has been based on a participant observation of eight major events dedicated to social entrepreneurship or the shared economy. In-depth interviews with Tunisian social entrepreneurs were also conducted in order to enrich our corpus. The results show the necessary cooperation of social entrepreneurs for a sustainable and responsible social innovation. Indeed, the analysis emphasizes that the viability and sustainability of a social innovation rests essentially on a collective construction, beyond common social values.

scholarly journals Assessing the Conversion of Various Nylon Polymers in the Hydrothermal Liquefaction of Macroalgae

Environments ◽  
2021 ◽  
Vol 8 (4) ◽  
pp. 34
Author(s):  
Sukanya Hongthong ◽  
Hannah S. Leese ◽  
Michael J. Allen ◽  
Christopher J. Chuck
Keyword(s):  
Nylon 6 ◽  
Hydrothermal Liquefaction ◽  
Marine Macroalgae ◽  
Fishing Gear ◽  
Third Generation ◽  
Conventional Agriculture ◽  
Fucus Serratus ◽  
Nylon 12 ◽  
Fuels And Chemicals ◽  
Real Challenge

Marine macroalgae offers a promising third generation feedstock for the production of fuels and chemicals, avoiding competition with conventional agriculture and potentially helping to improve eutrophication in seas and oceans. However, an increasing amount of plastic is distributed into the oceans, and as such contaminating macroalgal beds. One of the major plastic contaminants is nylon 6 derived from discarded fishing gear, though an increasing amount of alternative nylon polymers, derived from fabrics, are also observed. This study aimed to assess the effect of these nylon contaminants on the hydrothermal liquefaction of Fucus serratus. The hydrothermal liquefaction (HTL) of macroalgae was undertaken at 350 °C for 10 min, with a range of nylon polymers (nylon 6, nylon 6/6, nylon 12 and nylon 6/12), in the blend of 5, 20 and 50 wt.% nylon to biomass; 17 wt.% biocrude was achieved from a 50% blend of nylon 6 with F. serratus. In addition, nylon 6 completely broke down in the system producing the monomer caprolactam. The suitability of converting fishing gear was further demonstrated by conversion of actual fishing line (nylon 6) with the macroalgae, producing an array of products. The alternative nylon polymer blends were less reactive, with only 54% of the nylon 6/6 breaking down under the HTL conditions, forming cyclopentanone which distributed into the biocrude phase. Nylon 6/12 and nylon 12 were even less reactive, and only traces of the monomer cyclododecanone were observed in the biocrude phase. This study demonstrates that while nylon 6 derived from fishing gear can be effectively integrated into a macroalgal biorefinery, alternative nylon polymers from other sectors are too stable to be converted under these conditions and present a real challenge to a macroalgal biorefinery.

Improving exploratory information retrieval for neophytes

2021 ◽  
Vol 20 (4) ◽  
pp. 50-64
Author(s):  
Bissan Audeh ◽  
Michel Beigbeder ◽  
Christine Largeron ◽  
Diana Ramírez-Cifuentes
Keyword(s):  
Machine Learning ◽  
Information Retrieval ◽  
Digital Libraries ◽  
Specific Information ◽  
Information Need ◽  
External Resources ◽  
Learning Content ◽  
Citation Graph ◽  
Real Challenge ◽  
Access To Documents

Digital libraries have become an essential tool for researchers in all scientific domains. With almost unlimited storage capacities, current digital libraries hold a tremendous number of documents. Though some efforts have been made to facilitate access to documents relevant to a specific information need, such a task remains a real challenge for a new researcher. Indeed neophytes do not necessarily use appropriate keywords to express their information need and they might not be qualified enough to evaluate correctly the relevance of documents retrieved by the system. In this study, we suppose that to better meet the needs of neophytes, the information retrieval system in a digital library should take into consideration features other than content-based relevance. To test this hypothesis, we use machine learning methods and build new features from several metadata related to documents. More precisely, we propose to consider as features for machine learning: content-based scores, scores based on the citation graph and scores based on metadata extracted from external resources. As acquiring such features is not a trivial task, we analyze their usefulness and their capacity to detect relevant documents. Our analysis concludes that the use of these additional features improves the performance of the system for a neophyte. In fact, by adding the new features we find more documents suitable for neophytes within the results returned by the system than when using content-based features alone.

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