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Green Energy & Environment 2016年第3期1卷 211-221页

作者： Maria-Chiara Ferrari Davide Bocciardo stefano Brandani School of Engineering University of Edinburgh

Membrane separation systems could be a feasible option as post combustion carbon capture technologies in coal-fired power *** advancement on membrane materials based on microporous super glassy polymers could improve significantly the capture process but the properties of the materials have to guide the design of the separation stage. In this study an advanced hybrid two-stage membrane process employing one of the most permeable polymer known(PIM-1) is retrofitted to a coal fired power plant and the process is analysed in terms of energy requirement and cost performance. The results are based on the use of an in-house detailed membrane module model implemented in UniSim Design~?, the Honeywell process flowsheet simulator. The study indicates the need for advanced configuration in order for highly permeable membranes to be competitive with more mature technologies in terms of capture cost. The effect of ageing and impurities on the material is also investigated in order to predict the decline in process performance over time and suggest a timeproof design.

关键词： Membranes PIMs Post-combustion LCOE

Numerical solutions for point masses sliding over analytical surfaces: Part 2

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Theoretical & Applied Mechanics Letters 2019年第2期9卷 96-105页

作者： stefano Tinti Glauco Gallotti Department of Physics and Astronomy University of Bologna

This paper is the second of two companion papers addressing the dynamics of two coupled masses sliding on analytical surfaces and interacting with one another. The motion occurs under the effect of gravity, the reaction force of the surface and basal friction. The interaction force maintains the masses at a fixed distance and lies on the line connecting them. The equations of motion form a system of ordinary differential equations that are solved through a fourth-order Runge–Kutta numerical scheme. In the first paper we considered an approximate method holding when the line joining the masses is almost tangent to the surface at the instant mass positions. In this second paper we provide a general solution. Firstly, we present special cases in which the system has exact solutions. Second, we consider a series of numerical examples where the interest is focused on the trajectories of the masses and on the intensity and changes of the interaction force.

关键词： Two-point system Rigid-body motion Sliding downslopes

Inactivation of Staphylococcus aureus by the synergistic action of charged and reactive plasma particles

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Plasma Science and Technology 2020年第8期22卷 160-166页

作者： Espedito VASSALLO Matteo PEDRONI Tiziana SILVETTI stefano MORANDI Milena BRASCA CNR Istituto per la Scienza e Tecnologia dei PlasmiVia R.Cozzi 5320125 MilanItaly CNR Istituto di Scienze delle Produzioni AlimentariVia G.Celoria 220133 MilanItaly

In this paper,a low-pressure capacitively coupled plasma discharge sustained in an argonoxygen mixture was studied in order to evaluate its properties in terms of inactivation of Staphylococcus *** plasma parameters as electron temperature and plasma density were measured by the Langmuir probe(Ne≈1015 m^-3,Te≈1.5 eV),while the neutral atom density was in the range of 1021 m^-*** the plasma phase,oxygen radicals were taken as reference of the reactive species with antimicrobial activity,and oxygen spectral lines,over a range of plasma process parameters,were investigated by the optical emission *** plasma conditions were found,and a count reduction of 4 log in a few minutes of the bacterium proves the potentiality of an industrial grade plasma reactor as a sterilization agent.

关键词： Staphylococcus aureus capacitively coupled plasma bacteria decontamination

Radioguided surgery with 68Ga-DOTATATE for patients with neuroendocrine tumors

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Hepatobiliary Surgery and Nutrition 2020年第1期9卷 67-69页

作者： Valentina Ambrosini stefano Fanti Nuclear Medicine DIMESUniversity of BolognaS.Orsola-Malpighi HospitalBolognaItaly

Targeted precision neuroendocrine neoplasms (NEN) surgery may represent an innovative, yet promising, development of surgical procedures to achieve a radical resection of the primary tumour (by intra-operative confirmation of tumour-free margins) and to improve the identification of small sized lesions (that might otherwise be missed by either pre-operative functional imaging, ultrasound or manual palpation during surgery). From a practical point of view, radioguided surgery (RGS) requires a close collaboration between the nuclear medicine and the surgical teams, so that a small amount of radiopharmaceutical is intravenously injected in the patient right before surgery. The tumour lesions’ emitted radiation is then detected by a hand-held probe by the surgeon intra-operatively.

关键词： surgery operative neoplasms

Pin-on-disc study of dry sliding behavior of Co-free HVOFcoated disc tested against different friction materials

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Friction 2021年第5期9卷 1242-1258页

作者： Matteo FEDERICI Cinzia MENAPACE Alessandro MANCINI Giovanni STRAFFELINI stefano GIALANELLA Department of Industrial Engineering University of TrentoTrento 32122Italy Brembo S.p.A. StezzanoBergamo 24040Italy

The dry sliding behavior of three commercial friction materials(codenamed FM1,FM2,and FM3)tested against a Co‐free cermet coating produced by high‐velocity oxy‐fuel(HVOF)on gray cast‐iron discs is ***1 is a conventional low‐metallic friction material,FM2 is developed for using against HVOF‐coated discs,and FM3 is a Cu‐free friction material with a low content of abrasives and a relatively high concentration of steel *** the tribological evaluation,they are tested on a pin‐on‐disc(PoD)test rig against Co‐free HVOF‐coated discs,with particular attention to the running‐in stage,which is fundamental for the establishment of a friction layer between the two mating surfaces,i.e.,the pin and *** PoD tests are performed at room temperature(RT)and a high temperature(HT)of 300℃.At RT,all materials exhibit a long running‐in *** HT,no running‐in is observed in FM1 and FM2,whereas a shorter running‐in period,with respect to the RT case,is observed in FM3 followed by the attainment of a comparatively high coefficient of *** RT,the pin wear is mild in all cases but severe at ***3 shows the lowest wear rate at both ***,the coated disc shows no wear when sliding against the FM3 friction *** the results are interpreted considering the microstructural characteristics of the friction layers formed on the sliding *** findings of the present study provide insights into reducing wear in braking system components and hence reducing environmental particulate matter emissions from their wear,through the use of disc coatings.

关键词： friction materials sliding wear high‐velocity oxy‐fuel(HVOF)coatings pin‐on‐disc(PoD)testing

Applying the electroforming process to bio-inspired architecture： The case of Castelbuono Estate Winery

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Frontiers of Architectural Research 2013年第4期2卷 435-444页

作者： stefano Rossi Mauro Peilizzari Department of Industrial Engineering University of Trento Trento 38123 Italy Ferrari F.lli Lunelli spa via del Ponte di Ravina 15 Trento 30123 Italy

Inaugurated in June 2012, the Carapace at Castelbuono Estate Winery in Italy is a highly interesting example of biomorphic architecture. The structure, an artistic creation of world-renowned sculptor Arnatdo Pomodoro, is reminiscent of a tortoise shell that conveys a sense of protection： the Carapace structure guards wine barriques in the same way that the tortoise carapace protects the animal. Zoomorphic aspects are further exhibited by symbots on the roof, which remind observers of cuttlefish bone, a recurring element in the artistic production of Maestro Pomodoro. The roof was constructed by assembly of single copper plates with a rough surface in accordance with the design of the artist. Therefore, determining the appropriate production process was crucial. Etectroforming was selected as the method to achieve a challenging architectural goal.

关键词： Bio-inspired architec-ture Biomorphic structure Artistic design Copper electroforming

Numerical solutions for point masses sliding over analytical surfaces: Part 1

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Theoretical & Applied Mechanics Letters 2019年第2期9卷 84-95页

作者： Glauco Gallotti stefano Tinti Department of Physics and Astronomy University of Bologna

In this study, we introduce a system of differential equations describing the motion of a single point mass or of two interacting point masses on a surface, that is solved by a fourth-order explicit Runge–Kutta(RK4) scheme. The forces acting on the masses are gravity, the reaction force of the surface, friction, and, in case of two masses, their mutual interaction force. This latter is introduced by imposing that the geometrical distance between the coupled masses is constant. The solution is computed under the assumption that the point masses strictly slide on the surface, without leaping or rolling. To avoid complications stemming from numerical errors related to real topographies that are only known over discrete grids, we restrict our attention to simulations on analytical continuous surfaces. This study sets the basis for a generalization to more complex systems of masses, such as chains or matrices of blocks that are often used to model complex processes such as landslides and rockfalls. The results shown in this paper provide a background for a companion paper in which the system of equations is generalized, and different geometries are presented.

关键词： Point-mass sliding Two point-mass systems Analytical surfaces Numerical methods Runge-Kutta method

Recovery and reuse of abandoned buildings for student housing:A case study in Catania,Italy

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Frontiers of Architectural Research 2018年第4期7卷 510-520页

作者： stefano Cascone Gaetano Sciuto Department of Civil Engineering and Architecture University of CataniaCataniaItaly

Over the past 15 years, housing supply for university students has increased significantly given the considerable attention provided by national institutions on the issue of student housing. In Italy, however, only approximately 4% of students live in university residences. Since 2001, interventions on existing buildings have accounted for approximately 60% of the overall measures proposed for new university residences; these interventions comprise most of the available public economic resources. The possibility of recovering and reusing existing buildings for university residences is remarkable for the city of Catania because most of the students are enrolled in university courses located within the historic city center. Moreover, abandoned buildings are currently a significant part of the city׳s architectural heritage. This research aims to develop an articulated and integrated set of frameworks to support the various phases of the design process for recovering and then reusing existing buildings as university residences. The proposed approach applies existing dimensional standards and environmental sustainability principles to a constructed building using traditional techniques.

关键词： University residences Historic center Recovery Reuse Refurbishment Retrofit

molecular pathology of intraductal papillary mucinous neoplasms of the pancreas

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World Journal of Gastroenterology 2014年第29期20卷 10008-10023页

作者： Marina Paini stefano Crippa stefano Partelli Filippo Scopelliti Domenico Tamburrino Andrea Baldoni Massimo Falconi Department of Surgery University of Verona Division of Pancreatic Surgery Ospedali RiunitiUniversità Politecnica delle Marche Division of Pancreatic Surgery Casa di Cura Dott.Pederzoli37019 Peschiera del Garda (VR)Italy

Since the first description of intraductal papillary mucinous neoplasms(IPMNs)of the pancreas in the eighties,their identification has dramatically increased in the last decades,hand to hand with the improvements in diagnostic imaging and sampling techniques for the study of pancreatic ***,the heterogeneity of IPMNs and their malignant potential make difficult the management of these *** objective of this review is to identify the molecular characteristics of IPMNs in order to recognize potential markers for the discrimination of more aggressive IPMNs requiring surgical resection from benign IPMNs that could be *** briefly summarize recent research findings on the genetics and epigenetics of intraductal papillary mucinous neoplasms,identifying some genes,molecular mechanisms and cellular signaling pathways correlated to the pathogenesis of IPMNs and their progression to *** knowledge of molecular biology of IPMNs has impressively developed over the last few years.A great amount of genes functioning as oncogenes or tumor suppressor genes have been identified,in pancreatic juice or in blood or in the samples from the pancreatic resections,but further researches are required to use these informations for clinical intent,in order to better define the natural history of these diseases and to improve their management.

关键词： Intraductal papillary mucinous neoplasm Pancreas Pancreatic cancer Molecular pathology Oncogene Tumor suppressor gene Dysplasia Malignant transformation

Sustained neuronal viability by paracrine factors: new opportunities for endothelial progenitor cell secretome

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Neural Regeneration Research 2021年第7期16卷 1429-1430页

作者： stefano Di Santo Hans Rudolf Widmer Department of Neurosurgery Neurocenter and Regenerative Neuroscience ClusterUniversity Hospital BernSwitzerland University of BernInselspitalSwitzerland

Despite the big progresses in the field of regenerative medicine, the loss of neurons remains essentially an unresolved *** the different approaches under investigation, there are great expectations on stem and progen... 详细信息

关键词： progenitor strategies. spite