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RISS 인기검색어
- 검색키워드
- 저자 : Grifoni Daniele (검색결과 2 건)
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Daniele Grifoni,Graziana Roscigno,Enrica De Falco,Annapia Vece,Francesca Camilli,Francesco Sabatini,Luca Fibbi,Gaetano Zipoli 한국섬유공학회 2020 Fibers and polymers Vol.21 No.8
Clothes are one of the most effective measures to minimize health hazards due to the current levels of UV radiationon the earth’s surface. Fabrics made of natural fibers and dyed with natural pigments are an excellent means to reduce UVexposure. In this study, the UV protection properties were tested on a vegetal fiber fabric (hemp) dyed with water extractsfrom madder, chestnut, onion, inula, and logwood, at three increasing concentrations. Dyeing extracts were obtained fromdifferent sources: agro-food industry residues (chestnut and onion), spontaneous (inula), and commercial dyeing plants(madder and logwood). The quantitative characterization of water dye extracts was performed to evaluate the amount of dyein pre- and post-dyeing solutions as well as the dye fastened to the fabric. The percentage values of dye fastened to the fabric,in relation to the plant dry weight, were relatively low for all the considered species. The fabric Ultraviolet Protection Factor(UPF) was evaluated using both a laboratory spectrophotometer and a spectroradiometer in outdoor conditions. Aprogressive increase in UPF with the increase of the dye-bath concentration was shown. Chestnut and onion, reaching theminimum protection level (UPF=15) at the highest dye-bath concentration, can be considered the most effective. The UPFpersistence of the fabrics was also evaluated after sun exposure and repeated washing. Colors and UV protective propertiesobtained by the dyeing procedure tested in this research can provide added value to hemp fabric and meet the demands of anexpanding “eco-friendly” market.
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Grifoni Daniele,Betti Giulio,Bogi Andrea,Bramanti Lucia,Chiarugi Alessandra,Gozzini Bernardo,Morabito Marco,Picciolo Francesco,Sabatini Francesco,Miligi Lucia 한국산업안전보건공단 산업안전보건연구원 2022 Safety and health at work Vol.13 No.4
Background: The exposure to solar ultraviolet radiation is a significant risk factor generally underestimated by outdoor workers and employers. Several studies have pointed out that occupational solar exposure increased eye and skin diseases with a considerable impact on the lives and productivity of affected workers. The main purpose of this study was to evaluate the effectiveness against ultraviolet radiation of some measures recently undertaken for the protection of lifeguards in a coastal area of Tuscany. Methods: Different shading structures (gazebos and beach umbrella) were tested during a sunny summer’s day on a sandy beach by means of two radiometers; the UV protection offered by some T-shirts used by lifeguards was also tested in the laboratory with a spectrophotometer. Results: The analysed shading structures strongly reduced the ultraviolet radiation by up to 90%, however a not always negligible diffuse radiation is also present in the shade, requiring further protective measures (T-shirt, sunglasses, sunscreen, etc.); the tested T-shirts showed a very good-excellent protection according to the Australian/New Zealand standard. Conclusion: Results obtained in this study suggest how the adoption and dissemination of good practices, including those tested, could be particularly effective as a primary prevention for lifeguards who are subjected to very high levels of radiation for long periods.
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