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Development of AI-and Cu-based nanocomposites reinforced by graphene nanoplatelets： Fabrication and characterization

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Frontiers of Materials Science 2017年第2期11卷 171-181页

作者： Abdollah SABOORI matteo PAVESE Claudio BADINI Paolo FINO Department of Applied Science and Technology Politecnico Di Torino Corso Duca Degli Abruzzi 24 10129 Torino Italy

Aluminum and copper matrix nanocomposites reinforced by graphene nanoplatelets （GNPs） were successfully fabricated by a wet mixing method followed by conventional powder metallurgy. The uniform dispersion of GNPs within the metal matrices showed that the wet mixing method has a great potential to be used as a mixing technique. However, by increasing the GNPs content, GNPs agglomeration was more visible. DSC and XRD of AI/GNPs nanocomposites showed that no new phase formed below the melting point of AI. Microstructural observations in both nanocomposites reveal the evident grain refinement effect as a consequence of GNPs addition. The interfacial bonding evaluation shows a poor interfacial bonding between GNPs and AI, while the interfacial bonding between Cu and GNPs is strong enough to improve the properties of the Cu/GNPs nanocomposites. In both composites, the coefficient of thermal expansion decreases as a function of GNPs while, their hardness is improved by increasing the GNPs content as well as their elastic modulus.

关键词： nanocomposite aluminum copper graphene microstructure thermal expansion

Connector theory for reusing model results to determine materials properties

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npj Computational Materials 2022年第1期8卷 923-930页

作者： Marco Vanzini Ayoub Aouina Martin Panholzer matteo Gatti Lucia Reining LSI CNRSCEA/DRF/IRAMISÉcole PolytechniqueInstitut Polytechnique de ParisF-91120PalaiseauFrance Theory and Simulation of Materials(THEOS) École Polytechnique Fédérale de LausanneCH-1015LausanneSwitzerland European Theoretical Spectroscopy Facility(ETSF)https://www.etsf.eu Johannes Kepler University Linz LinzAustria Uni Software Plus GmbH Linzer Strasse 64320PergAustria Synchrotron SOLEIL L’Orme des MerisiersSaint-AubinBP 48F-91192Gif-sur-YvetteFrance

The success of Density Functional Theory(DFT)is partly due to that of simple approximations,such as the Local Density Approximation(LDA),which uses results of a model,the homogeneous electron gas,to simulate exchange-correlation effects in real *** turn this intuitive approximation into a general and in principle exact theory by introducing the concept of a connector:a prescription how to use results of a model system in order to simulate a given quantity in a real *** this framework,the LDA can be understood as one particular approximation for a connector that is designed to link the exchange-correlation potentials in the real material to that of the *** the in principle exact connector equations allows us to go beyond the LDA in a systematic ***,connector theory is not bound to DFT,and it suggests approximations also for other functionals and other *** explain why this very general approach is indeed a convenient starting point for *** illustrate our purposes with simple but pertinent examples.

关键词： materials theory exact

Surgical treatment of synchronous colorectal liver and lung metastases： the usefulness of thoracophrenolaparotomy for single stage resection

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Hepatobiliary & Pancreatic Diseases International 2016年第2期15卷 216-219页

作者： Daniele Del Fabbro Marco Alloisio Fabio Procopio matteo Cimino matteo Donadon Angela Palmisano Luca Viganò Guido Torzilli Department of Hepatobiliary Surgery Humanitas Research HospitalUniversity of Milan School of MedicineRozzanoMilanItaly Department of Thoracic Surgery Humanitas Research HospitalUniversity of Milan School of MedicineRozzanoMilanItaly

When suitable, surgery still remains the therapeutic option to be preferred for patients carrier of colorectal liver and lung metastases. Since thoracophrenolaparotomy should be helpful during liver resection for some of these patients, simultaneous removal of right lung metastases can be proposed through this approach. Eleven consecutive patients（median age of 53 years） carrier of colorectal liver and lung metastases, underwent single session surgical resection of both liver and right lung lesions by means of J-shaped thoracophrenolaparotomy. The median number of liver metastases removed was 5（range 2-30） and of lung metastases removed was 2（range 1-3）. Lung metastases were located in the upper lobe in 1 patient, in the middle lobe in 2, in the lower lobe in 6, and in the upper and lower lobe in 2. Mortality and major morbidity were nil. Two patients had a minor morbidity： one had wound infection and bile leakage treated conservatively and the other had transient fever. Mean overall survival was 24.4 months. An aggressive surgical approach should be undertaken for colorectal metastases： in case of multifocal liver disease with complex presentations, J-shaped thoracophrenolaparotomy could be considered as safe approach for combined liver and right lung metastasectomies.

关键词： colorectal carcinoma liver metastases lung metastases thoracophrenolaparotomy

Decline of Traditional Landscape in a Protected Area of the Southwestern Alps:the Fate of Enclosed Pasture Patches in the Land Mosaic Shift

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Journal of Mountain Science 2014年第2期11卷 544-554页

作者： matteo GARBARINO Emanuele SIBONA Emanuele LINGUA Renzo MOTTA Department of Agricultural Food and Environmental Sciences (D3A) Università Politecnica delle MarcheVia delle Brecce BiancheI-60131 AnconaItaly Department of Agriculture Forest and Food Sciences (DISAFA) University of Torino Via L. da Vinci 44 I-10095 Grugliasco TO Italy Department of Land and Agro-Forestry Systems (TESAF) University of Padova Agripolis Viale dell'Università 16 I-35020 Legnaro PD Italy

【Title】【Author】【Addresses】1Traditional landscape elements such as pasture patches enclosed in a forest matrix are progressively disappearing throughout the European Alps. We assessed the land mosaic shift of a protected area located in the western Italian Alps. In particular, the dynamics of pasture patches were studied at both landscape and stand level. Land-cover mapping through object-oriented analysis of historical aerial photographs was used to assess land-cover changes between 1954 and 2000. Spatial statistics were used to quantify landscape patterns, and field samplings within pasture patches were used to explore tree regeneration structure and composition. Our results showed a significant increase in the number of pasture patches caused by their fragmentation following forest expansion. The total surface area of pasture patches decreased by 43% and their core area decreased by 94%. The encroachment of trees on less accessible areas of the pasture patches caused a reduction of patch shape at landscape scale. The gap filling process started 40-50 years ago and began with an early invasion of light demanding species like sycamore maple （Acer pseudoplatanus L.） and common ash （Fraxinus excelsior L.）, followed by European beech （Fagus sylvatica L.） and secondarily silver fir （Abies alba Mill.）. Traditional land-use and population decline in the Pesio Valley led to a reduction in ecotone areas. A transition to a more homogeneous landscape is expected in the next decades. Given the cultural and productive nature of these mountain meadow-pasture communities, extensive livestock grazing systems could be used to manage their future conservation.

关键词： Landscape structure Secondary succession Historical ecology Pesio Valley Traditional land-use

Is the exposure to liver transplantation worthwhile for trainees in liver surgery?

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Hepatobiliary Surgery and Nutrition 2022年第5期11卷 746-748页

作者： matteo Donadon Paolo Baroffio Department of Health Sciences Universitàdel Piemonte OrientaleNovaraItaly Department of General Surgery University Maggiore Hospital Della CaritàNovaraItaly

In the May 2022 issue of Annals of Surgery,Albert *** and colleagues reported interesting results on the effect of liver transplantation(LT)experience in performing complex liver resection(CLR)(1).By considering 1,452 LT and 222 CLR over a period of 24 years,performed in a worldwide recognized center for LT and liver surgery,they had 25.2%major complications and 6.3%mortality after ***,they found that the more experience in LT,the less risk of postoperative complications after *** also indicated the cutoff of 95 LT;meaning that at below such number,the rate of complications after CLR significantly increased(1).

关键词： surgery Surgery liver

Hepatobiliary surgeons meet immunologists: the case of colorectal liver metastases patients

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Hepatobiliary Surgery and Nutrition 2019年第4期8卷 370-377页

作者： matteo Donadon Nina Cortese Federica Marchesi matteo Cimino Alberto Mantovani Guido Torzilli Department of Hepatobiliary and General Surgery Humanitas UniversityPieve EmanueleItaly Department of Biomedical Sciences Humanitas UniversityPieve EmanueleItaly Department of Immunology and Inflammation Humanitas Clinical and Research CenterRozzanoMilanItaly Department of Medical Biotechnology and Translational Medicine University of MilanMilanItaly The William Harvey Research Institute Queen Mary University of LondonLondonUK

The burgeoning field of cancer immunology demands a change in the paradigm of cancer patient management. The understanding of the course of a given malignant disease should also include the host immune system as one of the key factors in determining the patient's prognosis. Surgical and medical oncologists need to understand the basic and advanced applications of immunotherapies, which are rapidly evolving, and are nowadays an integral part of the armamentarium for the treatment of cancer patients. In the present work, we review the current knowledge concerning the immune landscape of colorectal cancer (CRC) patients with liver metastases, as recently discovered.

关键词： Host immune system colorectal liver metastases (CLM) colorectal cancer liver metastases colorectal cancer (CRC) immune response immunotherapy

PSMA PET/CT in the low-to intermediate-risk prostate cancer:when and why?

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Asian Journal of Andrology 2024年第6期26卷 584-586页

作者： Luca Sofia matteo Bauckneht Department of Health Sciences(DISSAL) University of GenovaGenova 16132Italy Nuclear Medicine IRCCS Ospedale Policlinico San MartinoGenova 16132Italy

Prostate-specific membrane antigen positron emission tomography/computed tomography (PSMA PET/CT) represents a significant advancement in the imaging of prostate cancer (PCa), yet its application in low- and intermediate-risk cases continues to be a topic of active discussion. This article delves into the nuanced role of PSMA PET/CT, critically analyzing its strengths and limitations in these specific risk categories. For patients with low-risk PCa, PSMA PET/CT demonstrates limited effectiveness in routine staging due to its minimal tracer uptake in low-grade tumors. However, its ability to differentiate between low- and high-grade tumors suggests a promising role in active surveillance, offering a potential noninvasive method for monitoring disease progression and aiding in treatment decision-making. In the intermediate-risk PCa setting, the high specificity of PSMA PET/CT in nodal staging makes it a valuable asset for precise surgical and radiation therapy planning. The article underscores the necessity for further research to fully realize the potential of PSMA PET/CT in PCa management, particularly in developing more personalized treatment approaches in these clinical scenarios.

关键词： routine intermediate treatment

Efficacy of radiofrequency ablation of hepatocellular carcinoma prior to liver transplantation and the need for competing-risk analysis

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Hepatobiliary Surgery and Nutrition 2018年第4期7卷 294-296页

作者： Alessandro Cucchetti matteo Serenari Department of Medical and Surgical Sciences - DIMEC Alma Mater Studiorum University of Bologna Bologna Italy

Radiofrequency ablation(RFA)currently represents a potentially curative treatment for hepatocellular carcinoma(HCC)in its early stages(1,2).Providing higher rates of complete necrosis of target tumor than other loco-regional therapies(LRTs),RFA plays an important role as bridge therapy to liver transplantation(LT)(3).In the study from Lee and colleagues of the UCLA medical center,published in issue of June 2017 of Hepatology,Authors analyzed the outcome of 121 patients with 156 de-novo HCC treated with RFA as initial stand-alone therapy(4).The study is a fair attempt to analyze the efficacy of RFA as bridge therapy to LT,considering all potential outcome ***,some results passed unnoticed,while instead deserve further discussion.

关键词： hepatocellular curative instead

A WKNN-based approach for NB-IoT sensors localization

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Digital Communications and Networks 2023年第1期9卷 175-182页

作者： Ennio Gambi Linda Senigagliesi Andrea Barbaresi matteo Mellini Adelmo De Santis Department of Information Engineering Universita Politecnica delle Marche60131AnconaItaly TIM S.p.A.-Business-Pre Sales Engineer 60100AnconaItaly

With the recent introduction of NarrowBand Internet of Things(NB-IoT)technology in the 4th and 5th generations of mobile radio networks,the mobile communications context opens up significantly to the world of *** means of NB-IoT,the mobile systems within 3GPP standardization introduce the peculiar functions of sensor networks,thus making it possible to satisfy very specific requirements with respect to those which characterize traditional mobile *** the functions of interest for sensor networks,the possibility of locating the positions of the sensors without an increase in costs and energy consumption of the sensor nodes is of utmost *** present work describes a procedure for locating the NB-IoT nodes based on the quality of radio signals received by the mobile terminals,which therefore does not require further hardware implementations on board the *** procedure,based on the RF fingerprinting technique and on machine learning processing,has been tested experimentally and has achieved interesting performances.

关键词： Narrowband Internet of Things(NB-IoT) Sensor localization Sensor networks RF fingerprint Positioning LTE