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243 results on '"Acocella, Maria Rosaria"'

10. Nanotechnological Antibacterial and Conductive Wound Dressings for Pressure Ulcer Prevention.

Author

Pollini, Mauro, Striani, Raffaella, Paladini, Federica, Kiani, Aida, Acocella, Maria Rosaria, and Esposito Corcione, Carola

Subjects
PRESSURE ulcers, TREATMENT effectiveness, THERMAL conductivity, SURFACE pressure, HEAT transfer
Abstract

The development of pressure ulcers, associated with increased temperature and moisture in specific areas of the body, and the risk of microbial infections in patients lying in a static position for prolonged periods of time represents a serious issue in medicine. In order to prevent the formation of pressure ulcers, this work aims to present advanced nanostructured coatings developed by three research groups. Nanometric silver, ash and functionalized torrefied biomass were the basis for the treatment of wound dressings to improve thermal conductivity and antimicrobial properties of the conventional cotton gauzes. Each treatment was performed according to its own optimized method. The treated fabrics were characterized in terms of antimicrobial properties, heat transfer, morphology and hydrophobic behavior. The results demonstrated the effectiveness of the deposition treatments also in synergistic actions. In particular, the antibacterial efficacy was improved in all the samples by the addition of silver treatment, and the thermal conductivity was enhanced by around 58% with nanometric ashes. A further step of the study involved the designing of two multilayer systems evaluated using circuit models for determining the total thermal conductivity. In this way, both systems were designed with the aim to guarantee simultaneous efficacy: high antibacterial and hydrophilic properties at the skin level and more hydrophobic and conductive behaviors toward the external environment. [ABSTRACT FROM AUTHOR]

Published
2024
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12. State Of The Art Of Supported Phase Transfer‐Catalysts Onium Salt‐Based.

Author

Schettini, Rosaria and Acocella, Maria Rosaria

Subjects
*HETEROGENEOUS catalysts, *PHASE-transfer catalysis, *CARBON-based materials, *PHASE-transfer catalysts, *ASYMMETRIC synthesis, *POLYMERS
Abstract

This review describes the advances of heterogenous phase‐transfer catalysts onium‐based and their importance from a sustainable point of view. Although heterogeneous phase‐transfer catalysts have shown incredible advantages in many organic reactions, examples of supported phase‐transfer catalysts onium‐based are still limited. In this review, we will examine the most common supports, including polymers, clays, and inorganic materials. Additionally, new recent developments in carbon materials application as efficient heterogeneous phase‐transfer catalysts in water will be reported, opening a new route toward green and sustainable procedures. Furthermore, considering the ever‐growing interest in asymmetric synthesis we wish to discuss the important achievements in the field of chiral heterogeneous phase‐transfer catalysts. [ABSTRACT FROM AUTHOR]

Published
2024
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30. Tire and elastomeric compound for tire, comprising crosslinked phenolic resins

Author

Giannini, Luca, Tadiello, Luciano, Acocella, MARIA ROSARIA, Maggio, Mario, Guerra, Gaetano, and Vittore, Aniello

Subjects
oxidized carbon, phenolic resins, catalysis, elastomeric compounds, tyres, tyres, elastomeric compounds, phenolic resins, cross-linking , catalysis, oxidized carbon, cross-linking
Published
2020

36. Organocatalytic asymmetric hydroxylation of beta-keto esters: Metal-free synthesis of optically active anti-diols

Author

Acocella, Maria Rosaria, Mancheno, Olga Garcia, Jorgensen, Karl Anker, and Bella, Marco

Subjects
Esters -- Research, Alkaloids -- Research, Hydroxylation -- Research, Biological sciences, Chemistry
Abstract

Use of cinchona alkaloids as organocatalysts for enantioselective alpha-hydroxylation of beta-keto esters is extended. The reaction proceeds in high yields and can give optically active products up to 80% ee by using cumyl hydroperoxide as the oxidation reagent and dihydroquinine as the catalyst.

Published
2004

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