检索结果-南通市图书馆

Acta Metallurgica Sinica(English Letters) 2017年第7期30卷 675-687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 Turin Italy

The objective of this research is to improve the thermal conductivity and mechanical properties of Al/GNPs（graphene nanoplatelets） nanocomposites produced by classical powder metallurgy and hot rolling techniques. The microstructural evaluation confirmed the uniform dispersion of GNPs at low content and agglomeration at higher contents of GNPs. The structure of graphene was studied before and after the mixing and the Raman spectrum proofs that the wet mixing has a great potential to be used as a dispersion method. There was no significant peak corresponding to the Al_4C_3 formation in both the differential scanning calorimetry curves and X-ray diffraction patterns. The microstructural observation in both fabrication techniques showed grain refinement as a function of the GNPs content. Moreover, the introduction of the GNPs not only improved the Vickers hardness of the composites but also decreased their density. The thermal conductivity investigations showed that in both the press-sintered and hot-rolled samples, although the thermal conductivity of composites was improved at low GNPs contents, it was negatively affected at high GNPs contents.

关键词： Aluminum Graphene Thermal conductivity Powder metallurgy Microstructure

Minimal crystallographic descriptors of sorption properties in hypothetical MOFs and role in sequential learning optimization

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

npj Computational Materials 2022年第1期8卷 1154-1167页

作者： Giovanni Trezza Luca Bergamasco matteo Fasano Eliodoro Chiavazzo Department of Energy Politecnico di TorinoC.so Duca degli Abruzzi 24Torino10129Italy

We focus on gas sorption within metal-organic frameworks(MOFs)for energy applications and identify the minimal set of crystallographic descriptors underpinning the most important properties of MOFs for CO_(2)and H_(2)O.A comprehensive comparison of several sequential learning algorithms for MOFs properties optimization is performed and the role played by those descriptors is *** energy transformations,thermodynamic limits of important figures of merit crucially depend on equilibrium properties in a wide range of sorbate coverage values,which is often only partially accessible,hence possibly preventing the computation of desired objective *** propose a fast procedure for optimizing specific energy in a closed sorption energy storage system with only access to a single water Henry coefficient value and to the specific surface *** are thus able to identify hypothetical candidate MOFs that are predicted to outperform state-of-the-art water-sorbent pairs for thermal energy storage applications.

关键词： functions sorption optimization

Reply to "Application of contrast-enhanced intraoperative ultrasonography in the decision-making about hepatocellular carcinoma operation"

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2010年第30期16卷 3857-3858页

作者： matteo Donadon Guido Torzilli Liver Surgery Unit Third Department of SurgeryUniversity of Milan School of MedicineIRCCS Istituto Clinico HumanitasVia Manzoni 5620089RozzanoMilanItaly

The use of contrast-enhanced intraoperative ultrasound for hepatocellular carcinoma has been already proposed as a novel technique to stage the disease during surgical resection. In the herein presented "letter to the editor", the authors underline some important points, which have been raised following paper published in the January issue of World Journal of Gastroenterology.

关键词： Hepatocellular carcinoma Liver surgery Contrast-enhanced intraoperative ultrasound Cirrhosis

Pediatric stricturing Crohn's disease

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2024年第12期30卷 1651-1654页

作者： Alessandro Boscarelli matteo Bramuzzo Department of Pediatric Surgery and Urology Institute for Maternal and Child Health-IRCCS“Burlo Garofolo”Trieste 34137Italy Department of Gastrointestinal Endoscopy and Nutrition Institute for Maternal and Child Health-IRCCS"Burlo Garofolo"Trieste 34137Italy

Crohn’s disease(CD)is a chronic inflammatory disease of the digestive *** incidence of pediatric CD is increasing and is currently 2.5-11.4 per 100000 ***,approximately 25%of children with CD develop stricturing CD(SCD)that requires *** stricturing diseases refractory to pharmacological management frequently require non-pharmacological ***-pharmacological therapeutic strategies include endoscopic balloon dilatation,stricturoplasty,and surgical resection of the strictured ***,strictures tend to recur postoperatively regardless of treatment *** lifetime risk of surgery in patients with childhood SCD remains at 50%-90%.Thus,new and emerging strategies,advanced diagnostic tools,and minimally invasive approaches are under investigation to improve the outcomes and overall quality of life of pediatric patients with SCD.

关键词： Stricturing Crohn’s disease Pediatrics Insights Future perspectives

Osteopontin and the immune system:another brick in the wall

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Cellular & Molecular Immunology 2018年第4期15卷 405-407页

作者： Sara Caputo matteo Bellone Cellular Immunology Unit Department of ImmunologyTransplantation and Infectious DiseasesSan Raffaele Scientific Institute20132 MilanItaly

The innate and adaptive arms of the immune system are finely tuned to efficiently react to either endogenous or exogenous noxiae that perturb the function of our tissues and organs,thus rapidly returning to homeostasis with minimal collateral *** molecular mechanisms by which this occurs have been only partially *** work by Kanayama et al.1 contributes to the building of this wall of knowledge by adding an important *** show that osteopontin(OPN),a phosphorylated protein of the extracellular matrix(ECM),has a dominant role in balancing lymphoid and myeloid cells during emergency granulopoiesis(that is,an increased cellular output from the bone marrow to meet the acute demand for the respective blood cell type).2 OPN that is produced and released by bone marrow(BM)stromal cells negatively impacts the pool size of hematopoietic stem cells(that is,Lin−Sca-1+c-kit+).

关键词： organs al. endogenous

Fatty is not that bad: feeding short-chain fatty acids to restrain autoimmunity

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Cellular & Molecular Immunology 2017年第11期14卷 878-880页

作者： Arianna Brevi matteo Bellone Department of Immunology Transplantation and Infectious DiseasesCellular Immunology UnitSan Raffaele Scientific InstituteMilan 20132Italy Univeristà Vita-Salute San Raffaele Milan 20132Italy

Do environmental cues,and commensal bacteria in particular,have an impact on autoimmunity,and can we modulate the production of gut microbial metabolites to re-equilibrate immune responses as well as restrain autoimmune diseases?Mariño et al.1 elegantly addressed these issues in a very recent Nature Immunology *** report that diets designed to release large amounts of the microbial metabolites acetate and butyrate finely tune autoreactive immune responses,which lends weight to the fascinating hypothesis that medicinal foods and metabolites might contribute to treating autoimmune diseases.

关键词： restrain autoimmunity release

Janus-faced Mitofusin 2 (MFN2): mitochondria-endoplasmic reticulum shaping and tethering functions unveiled

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Signal Transduction and Targeted Therapy 2024年第2期9卷 341-342页

作者： Camilla Aurora Franchino Elisa Motori matteo Bergami Institute for Biochemistry University of Cologne50674 CologneGermany Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases(CECAD) Faculty of Medicine and University Hospital CologneUniversity of Cologne50931 CologneGermany Center for Molecular Medicine 50931 CologneGermany

In a recently published study in Science,Naòn et *** two uncharacterized splice variants of Mitofusin 2(MFN2)that specifically shape and tether the endoplasmic reticulum(ER)to mitochondria.1 This work sheds new light on the pleiotropic effects previously ascribed to MFN2 loss-of-function mutations,and has important implications for associated metabolic and neurological diseases.

关键词： MFN2 reticulum

An overview of proven Climate Change Vulnerability Assessment tools for forests and forest-dependent communities across the globe：a literature analysis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Forestry Research 2018年第5期29卷 1167-1175页

作者： Caterina Guidi Giovanni Di matteo Stefano Grego Faculty of Law University of New South Wales SydneyNSW 2052 Australia Council for Agricultural Research and Economics (CREA) Research Centre for Agriculture and Environment00184 Rome Italy Centro Interuniversitario di Ricerca Per lo SviluppoSostenibile (CIRPS) 00184 Rome Italy

Climate Change Vulnerability Assessment（VA） tools for forest ecosystems and forest-dependent communities are important for making decisions and understanding the impact of climate change on both social and natural ***,the tools are poorly coordinated,making it difficult for policymakers to carry out VAs *** aim of this study was to analyze VA literature worldwide to find representative case studies in terms of methods and tools applied and which have been successful in performing VAs on forests and forest-dependent *** successful VA studies analyzed had common characteristics such as significant funding,data availability and technical *** additional characteristic was the development of an integrated approach that considered the vulnerability of both ecosystems and communities by combining qualitative and quantitative *** members and relevant stakeholders were significantly involved in a participatory process that concluded with the identification of adaptation *** case studies also revealed how policymakers need to choose suitable methods and tools to undertake efficient assessment of *** need to consider several aspects of the VA process such as subject matter,availability of resources,time and scale.

关键词： Vulnerable forest ecosystems Bibliographic analysis Forest-based community Policy-maker decision supporting Adaptation actions

A High-Order Conservative Semi-Lagrangian Solver for 3D Free Surface Flows with Sediment Transport on Voronoi Meshes

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Communications on Applied Mathematics and Computation 2023年第2期5卷 596-637页

作者： matteo Bergami Walter Boscheri Giacomo Dimarco Department of Mathematics and Computer Science University of FerraraVia Machiavelli 30I-44121 FerraraItaly

In this paper,we present a conservative semi-Lagrangian scheme designed for the numeri-cal solution of 3D hydrostatic free surface flows involving sediment transport on unstruc-tured Voronoi meshes.A high-order reconstruction procedure is employed for obtaining a piecewise polynomial representation of the velocity field and sediment concentration within each control *** is subsequently exploited for the numerical integration of the Lagrangian trajectories needed for the discretization of the nonlinear convective and viscous *** presented method is fully conservative by construction,since the transported quantity or the vector field is integrated for each cell over the deformed vol-ume obtained at the foot of the characteristics that arises from all the vertexes defining the computational *** semi-Lagrangian approach allows the numerical scheme to be unconditionally stable for what concerns the advection part of the governing ***,a semi-implicit discretization permits to relax the time step restriction due to the acoustic impedance,hence yielding a stability condition which depends only on the explicit discretization of the viscous terms.A decoupled approach is then employed for the hydrostatic fluid solver and the transport of suspended sediment,which is assumed to be *** accuracy and the robustness of the resulting conservative semi-Lagrangian scheme are assessed through a suite of test cases and compared against the analytical solu-tion whenever is *** new numerical scheme can reach up to fourth order of accu-racy on general orthogonal meshes composed by Voronoi polygons.

关键词： Conservative semi-Lagrangian Free surface flows Sediment transport High-order reconstruction Hydrostatic model

A Novel Cu–GNPs Nanocomposite with Improved Thermal and Mechanical Properties

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 2018年第2期31卷 148-152页

作者： Abdollah Saboori matteo Pavese Claudio Badini Paolo Fino Department of Applied Science and Technology Politecnico di Torino

Classical powder metallurgy followed by either hot isostatic pressing（HIPing） or repressing–annealing process was used to produce Cu–graphene nanoplatelets（GNPs） nanocomposites in this work. A wet mixing method was used to disperse the graphene within the matrix. The results show that a uniform dispersion of GNPs at low graphene contents could be achieved, whereas agglomeration of graphene was revealed at higher graphene contents. Density evaluations showed that the relative density of pure copper and copper composites increased by using the post-processing ***, it should be noticed that the efficiency of HIPing was remarkably higher than repressing–annealing process, and through the HIPing, fully dense samples were achieved. The Vickers hardness results showed that the reconsolidation steps can improve the mechanical strength of the specimens up to 50% owing to the progressive porosity elimination after reconsolidation. The thermal conductivity results of pure copper and composites at high temperatures showed that the postprocessing techniques could enhance the conductivity of materials significantly.

关键词： Copper Graphene nanoplatelets (GNPs) Powder metallurgy Hot isostatic pressing Thermal conductivity