Article
Environmental Sciences
K. Jeeva Jothi, S. Balachandran, K. Mohanraj, N. Prakash, A. Subhasri, P. Santhana Gopala Krishnan, K. Palanivelu
Summary: The work demonstrates the effective utilization of hybrid Polyurethane palladium doped zirconium oxide (Pd-ZrO2) as innovative carriers for corrosion protection coatings on steel materials. The study synthesized nanoparticles of ZrO2 and Pd-ZrO2 using Photodeposition and hydrothermal synthesis methods, and incorporated them into the polyurethane matrix. The modified polyurethane showed improved hydrophobicity and anti-corrosion properties.
ENVIRONMENTAL RESEARCH
(2022)
Article
Chemistry, Applied
Changjiang Yu, Martina Salzano de Luna, Angela Marotta, Corinna Ponti, Ilaria Esposito, Fabio Scherillo, Zhanhua Wang, Xi Zhang, Hesheng Xia, Marino Lavorgna
Summary: The study successfully developed a self-healing waterborne polyurethane coating with Diels-Alder bonds for self-repair, utilizing NIR light as trigger. The nanocomposite PU coatings demonstrated fast and effective self-healing under NIR light irradiation, along with enhanced corrosion protection for the underlying substrate.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Chemistry, Applied
Shihong Ren, Wenjuan Zhou, Kai Song, Xingchen Gao, Xuemin Zhang, Huagao Fang, Xueliang Li, Yunsheng Ding
Summary: Due to the increasing concerns for health, safety, and the environment, traditional solvent coatings are gradually being replaced by waterborne coatings, and the development of robust and self-healing waterborne polymers has important application significance. This study reports on waterborne polyurethane urea composite coatings with dynamic hindered urea bonds, showcasing their potential for self-healing and good mechanical properties. The addition of mussel-inspired polydopamine modification improves the dispersion and interfacial interactions of carbon nanotubes in the composite coatings, resulting in enhanced electrical conductivity and corrosion resistance.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Polymer Science
Changjiang Yu, Zhanhua Wang, Guoxia Fei, Xi Zhang, Martina Salzano de Luna, Marino Lavorgna, Hesheng Xia
Summary: By rational tuning of the chemistry of waterborne polyurethanes, robust mechanical performances and excellent self-healing ability can be achieved. An anionic self-healing waterborne polyurethane was synthesized using acetone process, with 2,2-bis(hydroxymethyl)propionic acid (DMPA) as inner emulsifier, thermally dynamic Diels-Alder bonds as healing motifs, and hexamethylene diisocyanate trimer as crosslinker. Increasing DMPA concentration allows for tuning of the mechanical performance, with films containing 5.6 wt% DMPA exhibiting a tensile stress of 24.9 MPa and elongation at break of 911.9%. The presence of dynamic reversible Diels-Alder bonds ensures excellent self-repairing capability.
JOURNAL OF POLYMER SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Tong Liu, Haichao Zhao, Dawei Zhang, Yuntian Lou, Luyao Huang, Lingwei Ma, Xiangping Hao, Liang Dong, Federico Rosei, Woon Ming Lau
Summary: An intrinsic self-healing epoxy coating containing 2-ureido-4[1H]-pyrimidinone (UPy) as a quadruple hydrogen bonding unit demonstrates fast self-healing and high corrosion protection properties on a steel substrate, even after 60 days of immersion in NaCl solution.
Article
Chemistry, Applied
Gan Cui, Chuchu Zhang, Ailing Wang, Xin Zhou, Xiao Xing, Jianguo Liu, Zili Li, Qiqi Chen, Qinglong Lu
Summary: This paper discusses the role of graphene in self-healing coatings and the current application status of self-healing polymer/graphene composite coatings, including different self-healing mechanisms, optimization measures, and analysis of the effects of graphene properties on self-healing properties.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Polymer Science
Ning Zhang, Zhicheng Pan, Chao Li, Juan Wang, Yao Jin, Shaofeng Song, Mingwang Pan, Jinfeng Yuan
Summary: Self-repairing materials with damage self-healing ability have the potential to improve the reliability, durability, and life of materials. However, waterborne polyurethane (WPU) faces challenges in its self-repair performance in the ambient environment. In this work, the use of glycylglycine methyl ester as a functional end-capping reagent improves the self-healing ability of WPU.
Article
Engineering, Environmental
Ziwei Qin, Yi Yang, Qingli Tian, Hao-Yang Mi, Heng Li, Runhao Guo, Ying Wang, Chuntai Liu, Changyu Shen
Summary: Developing protective materials with intelligent and stimuli-responsive properties is essential for safety purposes. However, combining contradictory properties into a single polymer is challenging. In this study, a strain-hardening supramolecular polyurethane nanocomposite (SPN) with high mechanical strength and unique impact protection properties is synthesized by incorporating quadruple hydrogen bonds (H-bonds), disulfide bonds, and modified silica nanoparticles into polyurethane elastomer. This SPN material exhibits high energy absorption efficiency and impact protection properties through the dynamic break and re-form characteristic of quadruple H-bonds and the stress dissipation behavior of nanoparticles.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Coatings & Films
Guangmeng Chen, Shifeng Wen, Jiacheng Ma, Zhiyong Sun, Cunguo Lin, Zhufeng Yue, J. M. C. Mol, Ming Liu
Summary: This research developed an optimized self-healing composite coating by adding SiO2@BTA to a dynamic cross-linked PDMS network, which significantly improved the healing speed of the material integrity and enhanced the corrosion protection ability of the coating on carbon steel.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Environmental Sciences
Kuiling Wei, Yan Wu, Xuejuan Cao, Xiaoyu Yang, Boming Tang, Bailin Shan
Summary: This study developed a new perspective for recycling polyurethane and extending the service life of polyurethane-modified emulsified asphalt. The results showed that the emulsions of recyclable polyurethane (RWPU) and its modified emulsified asphalt (RPUA-x) had excellent dispersion and storage stability. RWPU possessed dynamic bonds and thermal stability below 250 degrees C. It provided RPUA-x with a strong physical cross-linking network and allowed for self-healing capabilities.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Agricultural Engineering
Nan Sun, Zhaofeng Wang, Xi Ma, Kaixin Zhang, Zeyu Wang, Zhenyu Guo, Yun Chen, Lihao Sun, Wang Lu, Yang Liu, Mingwei Di
Summary: A facile strategy to prepare lignin-containing polyurethane elastomers based on hydrogen and disulfide bonds with good self-healing properties and tensile strength is reported. The study explores the role of lignin and the introduction order of disulfide bonds on the properties of polyurethane elastomers, and elaborates on the self-healing mechanism of dynamic hydrogen and disulfide bonds.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Chemistry, Multidisciplinary
Changjiang Yu, Martina Salzano de Luna, Andrea Russo, Ignazio Adamiano, Fabio Scherillo, Zhanhua Wang, Xi Zhang, Hesheng Xia, Marino Lavorgna
Summary: Organic coatings are being extensively studied as a potential solution to prevent or slow down corrosion processes on metal surfaces. The incorporation of the Diels-Alder adduct into waterborne polyurethanes has been shown to provide self-healing functionality. Research on different diisocyanates in PU synthesis demonstrates the importance of interactions between soft and hard segments in defining coating performance, with HMDI-based PU showing the best balance in this regard.
ADVANCED MATERIALS INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Xiangping Hao, Yun Bai, Chenhao Ren, Weiwei Chang, Hongchang Qian, Yuntian Lou, Li Zhao, Dawei Zhang, Xiaogang Li
Summary: This study reported the self-healing effect of damaged epoxy coatings on carbon steels via biomineralization by Shewanella putrefaciens in artificial seawater. The biomineralization could repair the corrosion resistance of the scratched coatings, and the bacteria preferred to colonize in the coating scratch.
Article
Engineering, Environmental
Li Cheng, Chengbao Liu, Haichao Zhao, Liping Wang
Summary: The study introduces a novel photothermal responsive composite epoxy system with hierarchical damage reporting and healing capabilities, achieved by loading mesoporous polydopamine nano-spheres with crystal violet lactone and phenanthroline. The coating damage is indicated by intensified fluorescent signal and can be rapidly closed with NIR irradiation. Corrosion probes released from the coating can chelate with Fe2+ ions from localized corrosion, producing a distinct visual red color to report corrosion pits and resist corrosion. The proposed smart coatings have potential applications in achieving hierarchically self-reporting and self-repairing function for general coating defects and substrate corrosion.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Chengbao Liu, Hao Wu, Yujie Qiang, Haichao Zhao, Liping Wang
Summary: This designed supramolecular polyurethane coating is capable of early corrosion reporting for steel and efficient self-healing under room temperature, saltwater, and hypothermia conditions. The autonomous self-healing is attributed to the dynamic interactions of hydrogen bonds. The coating enables nondestructive detection of metallic materials corrosion and autonomous repair of damage.
Article
Engineering, Mechanical
Matteo Benedetti, Mattia Orempuller, Francesca Russo, Vigilio Fontanari, Stefano Rossi
Summary: This study investigates the fatigue corrosion behavior of direct drive friction welded ASTM A105 and AISI 304L steels joints. The detrimental effect of the corrosive environment and the positive role played by the cathodic protection have been quantified. Different failure sites and mechanisms were observed for different corrosion fatigue conditions.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2023)
Letter
Gastroenterology & Hepatology
Matteo Rottoli, Alice Gori, Gianluca Pellino, Maria Elena Flacco, Antonino Spinelli, Gilberto Poggioli
Article
Mathematics, Applied
Vitonofrio Crismale, Simone Del Vecchio, Stefano Rossi
Summary: This paper characterizes the concrete monotone C*-algebra in terms of generators and relations and shows that it is UHF. It also provides an explicit Bratteli diagram for this algebra, which can be used to compute its K-theory.
LINEAR ALGEBRA AND ITS APPLICATIONS
(2023)
Article
Physiology
Stefano Rossi, Rosario Statello, Giovanna Pela, Fabio Leonardi, Aderville Cabassi, Ruben Foresti, Giacomo Rozzi, Francesco Paolo Lo Muzio, Luca Carnevali, Andrea Sgoifo, Luca Magnani, Sergio Callegari, Paolo Pastori, Alessandro Tafuni, Domenico Corradi, Michele Miragoli, Emilio Macchi
Summary: The effects of excitability, refractoriness, and impulse conduction on arrhythmias in the aged myocardium have been studied independently, but their combined effects are not well understood. This study aims to explore the relationship between cardiac electrophysiological parameters and arrhythmia vulnerability in the senescent heart. Multiple-lead epicardial potential mapping was used to analyze control and aged rat hearts. The senescent heart showed prolonged electrogram intervals and waves during sinus rhythm, indicating delayed tissue activation and recovery. In addition, ventricular pacing increased cardiac excitability, effective refractory period, and dispersion of refractoriness in the aged animal, accompanied by impaired impulse propagation. Furthermore, both spontaneous and induced arrhythmias were more common in senescent cardiac tissue. Histopathological evaluation revealed connective tissue deposition and myocytolysis in the atria, and interstitial fibrosis in the ventricular subendocardium in aged hearts. These findings suggest that enhanced arrhythmogenesis in the elderly is a multifactorial process involving increased excitability, dispersion of refractoriness, and conduction inhomogeneity.
PFLUGERS ARCHIV-EUROPEAN JOURNAL OF PHYSIOLOGY
(2023)
Article
Chemistry, Applied
Andrea Cristoforetti, Stefano Rossi, Flavio Deflorian, Michele Fedel
Summary: The mechanism of filiform corrosion on acrylic-coated steel was studied by analyzing the anodic and cathodic branches of potentiodynamic curves in two different electrolytes simulating the liquid environments at the metal-paint interface. Zero resistance amperometry was used to obtain numerical results. A simplified setup was used to estimate the potential difference and current density at the filament tip. The impact of oxygen availability on corrosion mechanisms was investigated by adjusting the amount of dissolved oxygen and the humidostatic chamber used for FFC propagation.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Chemistry, Physical
Massimo Calovi, Stefano Rossi
Summary: This study investigated the impact of hollow glass microspheres of different sizes derived from glass industry waste on the durability and thermal behavior of waterborne paint. Electron microscopy was used to analyze the distribution of the spheres and their influence on layer morphology. Mechanical properties of the coatings were evaluated using hardness and abrasion tests. The study also examined the effect of the glass microspheres on durability through salt spray exposure and electrochemical impedance measurements, as well as the thermal behavior of the coatings through accelerated degradation testing.
Article
Emergency Medicine
Paola J. Fugazzola, Lorenzo Cobianchi, Marcello Di Martino, Matteo Tomasoni, Francesca Dal Mas, Fikri Abu-Zidan, Vanni Agnoletti, Marco Ceresoli, Federico Coccolini, Salomone Di Saverio, Tommaso Dominioni, Camilla Nikita Fare, Simone Frassini, Giulia Gambini, Ari Leppaniemi, Marcello Maestri, Elena Martin-Perez, Ernest Moore, Valeria Musella, Andrew Peitzman, Angela de la Hoz Rodriguez, Benedetta Sargenti, Massimo Sartelli, Jacopo Vigano, Andrea Anderloni, Walter Biffl, Fausto Catena, Luca Ansaloni
Summary: We aimed to validate the Chole-risk score in predicting postoperative complications in patients undergoing early cholecystectomy for acute calculous cholecystitis. The findings showed that the POSSUM Physiological Score was the best prediction model, and the CHOLE-POSSUM score was a reliable tool for stratifying patients into low-risk and high-risk groups.
WORLD JOURNAL OF EMERGENCY SURGERY
(2023)
Article
Surgery
Lorenzo Crepaz, Alberto Sartori, Mauro Podda, Monica Ortenzi, Alberto Di Leo, Cesare Stabilini, Michele Carlucci, Stefano Olmi, SICE ISHAWS Collaborative Grp
Summary: Minimally invasive abdominal wall surgery is increasingly used worldwide, with Italian surgeons preferring this approach in elective cases. However, open surgery is still preferred in emergency settings. There is a need for consensus on the best surgical approach for incisional hernias, especially in emergency situations.
UPDATES IN SURGERY
(2023)
Article
Surgery
Mauro Podda, Gianluca Pellino, Salomone Di Saverio, Federico Coccolini, Daniela Pacella, Stefano Piero Bernardo Cloffi, Francesco Vlrdis, Andrea Balla, Benedetto Ielpo, Francesco Pata, Gaetano Poillucci, Monica Ortenzi, Dimitrios Damaskos, Belinda De Simone, Massimo Sartelli, Ari Leppaniemi, Kumar Jayant, Fausto Catena, Antonio Giuliani, Marcello Di Martino, Adolfo Pisanu
Summary: The identification of high-risk patients is crucial in the early stages of infected pancreatic necrosis (IPN) to determine appropriate management strategies. This study found that history of uncontrolled arterial hypertension, qSOFA score, renal failure, haemodynamic failure were independent predictors of mortality in IPN patients. Cholangitis, abdominal compartment syndrome, and gastrointestinal/intra-abdominal bleeding were associated with increased risk of mortality. Upfront open surgical necrosectomy was strongly associated with higher mortality risk, while endoscopic drainage of pancreatic necrosis and enteral nutrition were protective factors.
UPDATES IN SURGERY
(2023)
Article
Biology
Rosario Statello, Stefano Rossi, Francesco Pisani, Matteo Bonzini, Roberta Andreoli, Agnese Martini, Monica Puligheddu, Pierluigi Cocco, Michele Miragoli
Summary: This study found altered cardiac autonomic regulation in patients with obstructive sleep apnea (OSA) during nighttime and suggested that nighttime HRV could potentially be used as a predictor of sleep breathing disorders. These findings have important clinical implications for the diagnosis and prognosis of OSA.
Proceedings Paper
Engineering, Electrical & Electronic
Ilaria Mileti, Simone Pasinetti, Juri Taborri, Fabrizio Patane, Matteo Lancini, Stefano Rossi
Summary: This study proposes a smart insole sensorized with piezoresistive textile, which can collect information about gait phase duration and center of pressure. The accuracy of the sensor was validated by comparing it with two force platforms, and it was found that the insole can accurately measure the duration of gait phases and the displacement trend of the center of pressure.
2023 IEEE INTERNATIONAL INSTRUMENTATION AND MEASUREMENT TECHNOLOGY CONFERENCE, I2MTC
(2023)
Article
Emergency Medicine
Luca Andriollo, Rudy Sangaletti, Lorenzo Are, Loris Perticarini, Francesco Benazzo, Stefano Marco Paolo Rossi
Summary: The study aimed to evaluate the functional and clinical outcomes of bipolar hemiarthroplasty in elderly patients with intertrochanteric fractures. The results showed that long stemmed bipolar hemiarthroplasty can be considered a safe procedure, especially in patients over 80 with comorbidities and short life expectancy.
INTERNATIONAL JOURNAL OF BURNS AND TRAUMA
(2023)
Article
Materials Science, Multidisciplinary
Andrea Cristoforetti, Javier Izquierdo, Ricardo M. Souto, Flavio Deflorian, Michele Fedel, Stefano Rossi
Summary: This study presents a new approach to studying the mechanism of filiform corrosion in organic coated steel using the scanning vibrating electrode technique (SVET) and micropotentiometry (potentiometric SECM). The electrochemical activity under the coating was evaluated by mapping the ionic current densities coming from artificial defects made in specific locations of the filament. Antimony tips were also used to investigate the pH changes associated with different corrosion reactions at the metal-paint interface. Local pH levels along the filament in the anodic and cathodic regions were determined.
Article
Surgery
Matteo Rottoli, Antonino Spinelli, Gianluca Pellino, Alice Gori, Giacomo Calini, Maria E. Flacco, Lamberto Manzoli, Gilberto Poggioli
Summary: This study found that colorectal cancer surgery in low-volume centers is associated with suboptimal management, poor postoperative outcomes, and inadequate oncologic resections. Therefore, centralization of rectal cancer cases to high-volume centers should be considered to optimize surgical outcomes.
BRITISH JOURNAL OF SURGERY
(2023)
Article
Surgery
Paola Fugazzola, Lorenzo Cobianchi, Francesca Dal Mas, Enrico Cicuttin, Tommaso Dominioni, Simone Frassini, Matteo Tomasoni, Jacopo Vigano, Fausto Catena, Luca Ansaloni
Summary: This study validates the feasibility of the Israeli Score (IS) in predicting common bile duct stones (CBDS) in patients with acute calculous cholecystitis (ACC). The results show a linear trend between IS and the presence of CBDS, with higher rates of CBDS in patients with an IS of 3. The prediction model based on IS has a high accuracy and can help optimize the management of patients with ACC.
SURGICAL ENDOSCOPY AND OTHER INTERVENTIONAL TECHNIQUES
(2023)
