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Advanced methodologies for the cleaning of works of art

Science China(Technological Sciences) 2023年第8期66卷 2162-2182页

作者： CASINI Andrea CHELAZZI David baglioni piero CSGI and Department of Chemistry“Ugo Schiff” University of FlorenceSesto FiorentinoFlorence 50019Italy Department of Chemistry“Ugo Schiff”and CSGI University of FlorenceSesto FiorentinoFlorence 50019Italy

Cultural heritage assets constitute a fundamental socioeconomic resource,but the actual works of art need to be maintained,counteracting degradation processes,to transfer these benefits to future *** particular,the removal of soil,aged coatings,and vandalism/overpaints is one of the most needed interventions in art *** cleaning methodologies,based on classical solution and polymer chemistry,only grant limited control of the cleaning interventions,with the risk of affecting the original components of the artifacts,and often involving the use of toxic or non-environmentally friendly ***,materials science,colloids,and soft matter have provided valuable and safe solutions in the last *** review provides a selection of the most recent and advanced methodologies for the wet cleaning of works of art,spanning from nanostructured cleaning fluids(microemulsions,surfactants swollen micelles)to physical and chemical *** new methodologies work on different physico-chemical mechanisms,such as processes for detaching/dewetting,to selectively remove the unwanted layers in sustainable and cost-effective *** best performing systems,like microemulsions confined in“twin-chain”polyvinyl alcohol gels,have been assessed in the cleaning of masterpieces such as works by Pablo Picasso,Jackson Pollock and Roy *** attention is dedicated to“green”chemistry systems,using low-toxicity solvents or bio-based/waste materials to build gel ***,current trends and future perspectives are given,showing that advanced systems for art cleaning link with transversal fields of crucial importance even beyond Cultural heritage conservation,e.g.,detergency,tissue engineering,drug-delivery,food industry and cosmetics.

关键词： cleaning conservation cultural heritage gels microemulsions surfactants colloids nanoscience

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The Boson peak interpretation and evolution in confined amorphous water

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Science China(Physics,Mechanics & Astronomy) 2019年第10期62卷 16-23页

作者： Francesco Mallamace Carmelo Corsaro Domenico Mallamace Sow-Hsin Chen Emiliano Fratini piero baglioni Department of Nuclear Science and Engineering Massachusetts Institute of TechnologyCambridge MA 02139USA Center for Polymer Studies and Department of Physics Boston UniversityBoston MA 02215USA Dipartimento MIFT Universita di MessinaMessina 1-98166Italy Consorzio Interutiiversitario per lo Sviluppo dei Sistemi a Grande Interfase-CSGI Universita di FirenzeSesto FiorentinoFirenze 1-50019Italy Dipartimento di Chimica"Ugo Schiff" Universita di FirenzeSesto FiorentinoFirenze 1-50019Italy

We study the evolution of the Boson peak for water confined in cement paste obtained by means of Inelastic Neutron Scattering from room temperature to the deep supercooled *** analyze the data in terms of a universal-like model,developed for glass forming liquids in the frame of the energy *** such a way it is possible to discriminate between the fragile and strong glass forming character of supercooled liquids and the dynamical crossover,fragile to strong,between ***,we confirm the link between the Boson peak and the water *** particular,the main result is represented by a crossover from a local energetic minima configuration to that characteristic of saddle points on going towards the deep supercooled regime up to the dynamical arrest.

关键词： water water confined in cement Boson peak inelastic neutron scattering

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利用X光散射实验研究C-S-H的微观结构

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光散射学报 2013年第2期25卷 142-146页

作者：马晓兰李华 Emiliano Fratini piero baglioni 陈守信暨南大学物理系 Department of Chemistry and CSGI University of FlorenceI-50019 FlorenceItaly 美国麻省理工学院核科学与工程系

为了了解波特兰水泥中的水化硅酸钙(C-S-H)的微观结构,对有无含添加剂superplasticizers(SPs)、从5天到68天的不同老化时间的波特兰水泥样品的X光散射实验,实验数据结果分析表明C-S-H中钙硅层间距的大小是0.98±0.01nm,结果说明波特兰... 详细信息

为了了解波特兰水泥中的水化硅酸钙(C-S-H)的微观结构,对有无含添加剂superplasticizers(SPs)、从5天到68天的不同老化时间的波特兰水泥样品的X光散射实验,实验数据结果分析表明C-S-H中钙硅层间距的大小是0.98±0.01nm,结果说明波特兰水泥样品中C-S-H中钙硅层间距与样品是否含SPs以及样品的老化时间无关。

关键词：微观结构 X光散射 C-S-H

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Immune neutropenias of infancy and childhood

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World Journal of Pediatrics 2016年第2期12卷 142-148页

作者： piero Farruggia Pediatric Hematology and Oncology Unit Oncology DepartmentA.R.N.A.S.Ospedali CivicoDi Cristina e BenfratelliPalermoItaly

Background:Anti-neutrophil antibodies are a wellrecognized cause of neutropenia,producing a potential increase in risk of infection:in the majority of patients antibodies react against antigens located on the IgG Fc receptor type 3b(FcRIIIb),but other target antigens have been *** sources:In this review the most important papers of auto and alloimmune neutropenias of infancy and childhood were ***,Google Scholar and Thompson ISI Web of Knowledge were searched for identifying relevant ***:Primary autoimmune neutropenia of infancy is mostly a benign condition with self-limited course,whereas isolated alloimmune neonatal neutropenia or secondary autoimmune neutropenia may be occasionally complicated by severe ***:Granulocyte colony stimulating factor is an effective therapy for patients affected by all types of autoimmune and alloimmune neutropenia,even though most of them do not need any therapy.

关键词： immune infancy neutropenia

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Mounting evidence of FKBP12 implication in neurodegeneration

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Neural Regeneration Research 2020年第12期15卷 2195-2202页

作者： Gabriella Caminati piero Procacci Department of Chemistry“Ugo Schiff” University of FlorenceSesto FiorentinoItaly Center for Colloid and Surface Science(CSGI) University of FlorenceSesto FiorentinoItaly

Intrinsically disordered proteins, such as tau or α-synuclein, have long been associated with a dysfunctional role in neurodegenerative diseases. In Alzheimer’s and Parkinson’s’ diseases, these proteins, sharing a common chemical-physical pattern with alternating hydrophobic and hydrophilic domains rich in prolines, abnormally aggregate in tangles in the brain leading to progressive loss of neurons. In this review, we present an overview linking the studies on the implication of the peptidyl-prolyl isomerase domain of immunophilins, and notably FKBP12, to a variety of neurodegenerative diseases, focusing on the molecular origin of such a role. The involvement of FKBP12 dysregulation in the aberrant aggregation of disordered proteins pinpoints this protein as a possible therapeutic target and, at the same time, as a predictive biomarker for early diagnosis in neurodegeneration, calling for the development of reliable, fast and cost-effective detection methods in body fluids for community-based screening campaigns.

关键词： Alzheimer’s disease biomarker detections FKBP12 FK506 binding protein neurodegeneration Parkinson’s disease tau protein α-synuclein

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Postoperative biliary adverse events following orthotopic liver transplantation: Assessment with magnetic resonance cholangiography

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World Journal of Gastroenterology 2014年第32期20卷 11080-11094页

作者： piero Boraschi Francescamaria Donati 2nd Unit of Radiology Department of Diagnostic Radiology Vascular and Interventional Radiology and Nuclear Medicine Pisa University Hospital56124 Pisa Italy

Biliary adverse events following orthotopic liver transplantation (OLT) are relatively common and continue to be serious causes of morbidity, mortality, and transplant dysfunction or failure. The development of these adverse events is heavily influenced by the type of anastomosis during surgery. The low specificity of clinical and biologic findings makes the diagnosis challenging. Moreover, direct cholangiographic procedures such as endoscopic retrograde cholangiopancreatography and percutaneous transhepatic cholangiography present an inadmissible rate of adverse events to be utilized in clinically low suspected patients. Magnetic resonance (MR) maging with MR cholangiopancreatography is crucial in assessing abnormalities in the biliary system after liver surgery, including liver transplant. MR cholangiopancreatography is a safe, rapid, non-invasive, and effective diagnostic procedure for the evaluation of biliary adverse events after liver transplantation, since it plays an increasingly important role in the diagnosis and management of these events. On the basis of a recent systematic review of the literature the summary estimates of sensitivity and specificity of MR cholangiopancreatography for diagnosis of biliary adverse events following OLT were 0.95 and 0.92, respectively. It can provide a non-invasive method of imaging surgical reconstruction of the biliary anastomoses as well as adverse events including anastomotic and non-anastomotic strictures, biliary lithiasis and sphincter of Oddi dysfunction in liver transplant recipients. Nevertheless, conventional T2-weighted MR cholangiography can be implemented with T1-weighted contrast-enhanced MR cholangiography using hepatobiliary contrast agents (in particular using Gd-EOB-DTPA) in order to improve the diagnostic accuracy in the adverse events’ detection such as bile leakage and strictures, especially in selected patients with biliary-enteric anastomosis.

关键词： Liver transplantation Bile ducts Biliary adverse events Magnetic resonance cholangiography Contrast-enhanced magnetic resonance cholangiography

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The "meso" of the rectum and the "meso" of the pancreas: similar terms but distinct concepts in surgical oncology

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Hepatobiliary & Pancreatic Diseases International 2015年第5期14卷 548-551页

作者： Nadia Peparini Roberto Caronna piero Chirletti Azienda Sanitaria Locale Roma H-Distretto 3 Department of Surgical Sciences Sapienza University of Rome

A correspondence between the ＂meso＂ of the rectum and of the pancreas has recently been reported. Here we highlight the differences between mesorectum and mesopancreas. Based on anatomical findings from a series of 89 consecutive pancreaticoduodenectomies and 71 consecutive total mesorectal excisions, we observed that in contrast to the mesorectum, the mesopancreas did not have well-defined anatomic boundaries and was continuous and connected through its components with the para-aortic area. In rectal cancer,tumor deposits and nodal involvement could be confined to the mesorectum（i.e., within the mesorectal fascia）, whereas in pancreatic carcinoma, tumor deposits and nodal metastases occurred in the boundless mesopancreatic area. Total mesorectal excision was made en bloc with the rectum by dissecting along the mesorectal fascia; this was not the case for mesopancreatic excision since anatomical demarcation of the mesopancreas did not exist. Moreover, the growth pattern of pancreatic cancer showed greater dispersion, which was more prominent at the invasive front of the tumor and could potentially affect the status of the resection margin. These findings indicate that the mesorectum and mesopancreas are completely distinct from the pathological, surgical, and oncological standpoints.

关键词： pancreatic head carcinoma surgical procedure therapy pancreatic cancer

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Clinical significance of erectile dysfunction developing after acute coronary event： exception to the rule or confirmation of the artery size hypothesis？

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Asian Journal of Andrology 2015年第1期17卷 21-25,I0006页

作者： piero Montorsi Paolo M Ravagnani Charalambos Vlachopoulos Department of Clinical Sciences and Community Health Cardiovascular Section University of Milan Centro Cardiologico Monzino IRCCS Milan Italy Department of Cardiology Athens Medical School Greece.

Erectile dysfunction （ED） has been found to frequently precedes the onset of coronary artery disease （CAD）, representing an early marker of subclinical vascular disease, included CAD. Its recognition is, therefore, a ＂window opportunity＂ to prevent a coronary event by aggressive treatment of cardiovascular risk factors. The artery size hypothesis （ASH） has been proposed as a putative mechanism to explain the relationship between ED and CAD. Since atherosclerosis is a systemic disorder all major vascular beds should be affected to the same extent. However, symptoms at different points in the system rarely become evident at the same time. This is likely the result of smaller vessels （i.e. the penile artery） being able to less well tolerate the same amount of plaque when compared with larger ones （i.e. the coronary artery）. If true, ED will develop before CAD. We present a case in which ED developed after a coronary event yet before a coronary recurrence potentially representing a late marker of vascular progression. Reasons for this unusual sequence are discussed as they might still fit the ASH.

关键词： artery size hypothesis coronary artery disease erectile dysfunction

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Tumor rupture during surgery for gastrointestinal stromal tumors: Pay attention!

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World Journal of Gastroenterology 2013年第12期19卷 2009-2010页

作者： Nadia Peparini piero Chirletti Azienda Sanitaria Locale Roma H Department of Surgical Sciences Sapienza University of Rome

In a recently published letter to the editor, we debated the proposal by Coccolini et al to treat gastrointestinal stromal tumors (GISTs) of the esophagogastric junction with enucleation and, if indicated, adjuvant therapy. We highlighted that, because the prognostic impact of a T1 high-mitotic rate esophageal GIST is worse than that of a T1 high-mitotic rate gastric GIST, enucleation may not be adequate surgery for esophagogastric GISTs with a high mitotic rate. In rebuttal, Coccolini et al pointed out the possible bias in assessment of the mitotic rates due to the lack of standardized methods and underlined that the site and features of the tumor need to be carefully considered in evaluation of the risk-benefit balance. Here we confirm that, apart from the problematic issue of mitotic counting, enucleation should not be indicated for GISTs at any site to reduce the risk of tumor rupture, which has been recently considered to be an unfavorable prognostic factor, and to avoid microscopic residual tumor.

关键词： Gastrointestinal stromal tumor Esophagogastric junction Surgery Resection Enucleation

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Alien mammals in Europe:updated numbers and trends,and assessment of the effects on biodiversity

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Integrative Zoology 2012年第3期7卷 247-253页

作者： piero GENOVESI Lucilla CARNEVALI Anna ALONZI Riccardo SCALERA Institute for Environmental Protection and Research RomeItaly International Union for Conservation of Nature Species Survival CommissionInvasive Species Specialist Group(IUCN/SSC ISSG)ValbyDenmark

This study provides an updated picture of mammal invasions in Europe,based on detailed analysis of information on introductions occurring from the Neolithic to recent *** assessment considered all information on species introductions,known extinctions and successful eradication campaigns,to reconstruct a trend of alien mammals’establishment in the *** a comparative analysis of the data on introduction,with the information on the impact of alien mammals on native and threatened species of Europe,the present study also provides an objective assessment of the overall impact of mammal introductions on European biodiversity,including information on impact *** results of this assessment confirm the constant increase of mammal invasions in Europe,with no indication of a reduction of the rate of *** study also confirms the severe impact of alien mammals,which directly threaten a significant number of native species,including many highly threatened *** results could help to prioritize species for response,as required by international conventions and obligations.

关键词： impact indicators invasive species Red List threatened species

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