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Laparoscopic, Endoscopic and Robotic Surgery 2024年第2期7卷 87-91页

作者： Giuseppe Frazzetta Antonino Picciurro Angela Maffongelli irene Vitale Francesco Vitale Daniela Scimeca Michele Amata Anna Calì Ambra Bonaccorso Barbara Scrivo Vincenzo Di Martino Elisabetta Conte Filippo Mocciaro Roberto Di Mitri Pierenrico Marchesa Oncologic Surgery Unit ARNAS Civico HospitalPalermo 90100Italy Gastroenterology Unit ARNAS Civico HospitalPalermo 90100Italy

Surgery for lesions of the proximal part of the pancreatic body or neck can be challenging,and when enucleation is not possible,central pancreatectomy is an *** central pancreatic resection is rarely described worldwide;it is considered a difficult procedure mainly because of the risk of double pancreatic fistula developing at two sites of ***,it seems to be an excellent alternative to distal pancreatectomy or pancreaticoduodenectomy,with the advantages of preserving functioning parenchyma and reducing endocrine and exocrine ***,patients with pancreatic lesions requiring central resection are often managed with the open approach in many hospitals due to the complexity of total laparoscopic central pancreatectomy,which requires advanced laparoscopic skills,expertise and ***,we report a case of a 29-year-old female who underwent total laparoscopic central pancreatic resection with gastro-pancreatic anastomosis for symptomatic serous *** discuss the details of case management and review the relevant literature.

关键词： Laparoscopic Pancreatic surgery Central pancreatectomy Cystadenoma

Multi-tissue transcriptomics of a unique monozygotic discordant twin case of severe progressive osseous heteroplasia

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Genes & Diseases 2024年第3期11卷 22-25页

作者： Alberto Gomez-Carballa Maria Jose Curras-Tuala Sara Pischedda Miriam Cebey-Lopez Jose Gomez-Rial irene Rivero-Cale Jacobo Pardo-seco Xabier Bello Sandra Viz-Lasheras Antonio Justicia-Grande Julian Montoto-Louzao Alba Camino-Mera Isabel Ferreiros-Vidal Maximo Fraga Jose RAntunez Rodolfo Gomez Federico Martinon-Torres Antonio Salas Genetics Vaccines and Infections Research Group(GENVIP)Instituto de Investigacion Sanitaria de SantiagoSantiagode CompostelaGalicia 15706Spain Translational Pediatrics and Infectious Diseases Department of PediatricsHospital Clinico Universitario de Santiago de CompostelaServicio Galego de Saude(SERGAS)Galicia 15706Spain Laboratorio de Inmunologia Servicio de Andlisis ClinicosHospital Clinico Universitario de Santiago de CompostelaServicio Galego de Saude(SERGAS)Galicia 15706Spain Unidade de Xenetica Instituto de Ciencias Forenses(INCIFOR)Facultade de MedicinaUniversidade de Santiago de Compostelaand GenPoB Research GroupInstituto de Investigacion SanitariaHospital Clinico Universitario de Santiago de CompostelaServicio Galego de Saude(SERGAS)Galicia 15706Spain Musculoskeletal Pathology Group Instituto de Investigacion Sanitaria de SantiagoServicio Galego de Saude(SERGAS)Santiago de CompostelaGalicia 15706Spain Department of Pathology Hospital Clinico Universitario de Santiago de Compostela(SERGAS)Galicia 15706Spain Unidad Integrada de BiobancosBiomodelos 3D y Modelos Animales IDIS(lnstituto de Investigacion Sanitaria de Santiagode Compostela)Galicia15706Spain Centro de Investigacion Biomedica en Red de Enfermedades Respiratorias(CIBER-ES) MadridSpain

Progressive osseous heteroplasia(POH)is an ultra-rare autosomal dominant disabling disorder characterized by heterotopic ossification(HO).It is caused by heterozygous inactivating mutations in the GNAS(guanine nucleotide-binding protein alpha-stimulating activity polypeptide)***,the molecular mechanisms underlying HO remain poorly *** a treatment for POH is not yet available,the identification of the mechanisms driving POH in affected tissues using gene expression may be of great help to underestand the molecular basis of POH and develop new therapeutic approaches.

关键词： stimulating driving asi

Embryo-to-lamella transition of grain boundary twins in magnesium

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Journal of Magnesium and Alloys 2023年第12期11卷 4485-4497页

作者： Mariyappan Arul Kumar irene J Beyerlein Materials Science and Technology Division Los Alamos National LaboratoryLos AlamosNM 87545USA Mechanical Engineering Department Materials DepartmentUniversity of CaliforniaSanta BarbaraCA 93106USA

A combined experimental and computational analysis is performed to investigate the less commonly studied embryo-to-lamella transition of deformation twins in magnesium. This work aims to understand the structural variables controlling the embryo-to-lamella transition from grain boundaries. Statistical analysis of hundreds of early-stage twins in the lightly deformed microstructure reveals a prevailing wedge shape,with a much thicker base along the grain boundary(GB) where they originate and a thinner tip terminating in the crystal. The analysis also shows that the GB base is super thick and identifies a minimum GB twin thickness among all early-stage twins that is about one micron. A crystal plasticity-based full-field model is employed to calculate the driving forces to migrate the boundary of a three-dimensional GB twin embryo. The stress analysis, considering a full range of embryo shapes and neighboring grain orientations, indicate that the twin embryo is most likely going to form a wedge shape when it first propagates. The calculations predict that the thickness of the embryo at the GB needs to be significantly larger than its length into the crystal in order to propagate into the crystal. The analysis finds that the more aligned the twin embryo variant is with basal slip in the neighboring grain, the thinner the twin embryo needed for propagation.

关键词： Magnesium Twin embryo Crystal plasticity Nucleation Grain neighbor

Pollen Tube Growth: a Delicate Equilibrium Between Secretory and Endocytic Pathways

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Journal of Integrative Plant Biology 2009年第8期51卷 727-739页

作者： Alessandra Moscatelli Aurora irene Idilli Dipartimento di Biologia L. Gorini Università degli Studi di MilanoVia Celoria 26 20133 Milano Italy

Although pollen tube growth is a prerequisite for higher plant fertilization and seed production, the processes leading to pollen tube emission and elongation are crucial for understanding the basic mechanisms of tip growth. It was generally accepted that pollen tube elongation occurs by accumulation and fusion of Golgi-derived secretory vesicles （SVs） in the apical region, or clear zone, where they were thought to fuse with a restricted area of the apical plasma membrane （PM）, defining the apical growth domain. Fusion of SVs at the tip reverses outside cell wall material and provides new segments of PM. However, electron microscopy studies have clearly shown that the PM incorporated at the tip greatly exceeds elongation and a mechanism of PM retrieval was already postulated in the mid-nineteenth century. Recent studies on endocytosis during pollen tube growth showed that different endocytic pathways occurred in distinct zones of the tube, including the apex, and led to a new hypothesis to explain vesicle accumulation at the tip; namely, that endocytic vesicles contribute substantially to V-shaped vesicle accumulation in addition to SVs and that exocytosis does not involve the entire apical domain. New insights suggested the intriguing hypothesis that modulation between exo- and endocytosis in the apex contributes to maintain PM polarity in terms of lipid/protein composition and showed distinct degradation pathways that could have different functions in the physiology of the cell. Pollen tube growth in vivo is closely regulated by interaction with style molecules. The study of endocytosis and membrane recycling in pollen tubes opens new perspectives to studying pollen tube-style interactions in vivo.

关键词： endocytosis exocytosis membrane recycling polarized growth pollen tube

Energy balance model to assess the resistance of ballistic protection materials

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Defence Technology（防务技术） 2023年第12期30卷 141-153页

作者： Bogdan Stirbu irene Ndindabahizi Tom Vancaeyzeele Cyril Robbe Department of Weapon Systems and Ballistics Royal Military AcademyBrussels 1000Belgium

NATO standards"AEP-2920 Procedures for the Evaluation and Classification of Personal Armor"and NIJ Standard-0101.06,indicate the method to statistically assess the resistance of personal ballistic protection *** be validated and accepted through these procedures,a personal ballistic protection material should withstand an impact of a specific projectile with a probability of a partial penetration confidence level higher than 90%.The present study introduces an energy equilibrium method to assess the confidence level for the probability of partial penetration of ductile and brittle *** experiments performed in the Ballistics laboratory of the Royal Military Academy in Belgium,use a modified pendulum method that allowed the quantification of the energy balance before and after the ballistic *** results were then compared with the ones obtained using the method specified by the NATO standard and NIJ 0101.06,mentioned *** outcome of this comparison shows the tendency of the values obtained by the pendulum method to faithfully follow the values obtained according to NATO and NIJ *** presented method is not based on statistical estimations,but instead,an exact method,of computing the energy absorbed by the tested *** is an advantage for the cases when the material to be evaluated is expensive or it is in the development phase and mass production is not possible.

关键词： Energy NATO Ballistic Protection materials Statistics NIJ Bootstrapping

Efficient Algorithms for Approximating Particular Solutions of Elliptic Equations Using Chebyshev Polynomials

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Communications in Computational Physics 2007年第3期2卷 501-521页

作者： Andreas Karageorghis irene Kyza Department of Mathematics and Statistics University of CyprusP.O.Box 205371678 NicosiaCyprus Department of Mathematics University of CreteP.O.Box 2208GR-71409 HeraklionGreece.

In this paper,we propose efficient algorithms for approximating particular solutions of second and fourth order elliptic *** approximation of the particular solution by a truncated series of Chebyshev polynomials and the satisfaction of the differential equation lead to upper triangular block systems,each block being an upper triangular *** systems can be solved efficiently by standard *** numerical examples are presented for each case.

关键词： Chebyshev polynomials Poisson equation biharmonic equation method of particular solutions.

Interface-facilitated stable plasticity in ultra-fine layered FeAl/FeAl_(2) micro-pillar at high temperature

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Journal of Materials Science & Technology 2021年第14期73卷 61-65页

作者： Lulu Li irene J.Beyerlein Weizhong Han Center for Advancing Materials Performance from the Nanoscale State Key Laboratory for Mechanical Behavior of MaterialsXi’an Jiaotong UniversityXi'an 710049China Department of Mechanical Engineering Materials DepartmentUniversity of CaliforniaSanta Barbara.CA.93106-5070USA

Fe-Al compounds possess a combination of high strength and corrosion resistance at high ***,increasing Al content to make them lighter results in ***,we investigate the high-temperature behavior of a novel,lightweight,ultra-fine-layered FeAl/FeAl_(2) *** report a transition from unstable to stable plasticity at 450℃.Below 450℃,deformation is dominated by localized shear deformation within the soft FeAl layers,while above 450℃,it proceeds by co-deformation between Fe Al and the brittle FeAl_(2) *** show that co-deformation is associated with the temperature at which the interface converts from sliding to sourcing dislocations for Fe Al_(2).

关键词： Fe-Al alloy Compression High-temperature Interface Dislocation

A Complex Systems Science Perspective on Wireless Networks

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Journal of Systems Science & Complexity 2016年第4期29卷 1034-1056页

作者： MACALUSO irene GALIOTTO Carlo MARCHETTI Nicola DOYLE Linda CTVR Telecommunications Research Center Trinity College Dublin

The paper targets a future world where all wireless networks are self-organising entities and in which the predominant mode of spectrum access is dynamic. The paper explores whether the behaviour of a collection of autonomous self-organising wireless systems can be treated as a complex system and whether complex systems science can shed light on the design and deployment of these networks. The authors focus on networks that self-organise from a frequency perspective to understand the behaviour of a collection of wireless self-organising nodes. Each autonomous network is modelled as a cell in a lattice and follows a simple set of self-organisation rules. Two scenarios are considered, one in which each cell is based on cellular automata and which provides an abstracted view of interference and a second in which each cell uses a self-organising technique which more accurately accounts for interference. The authors use excess entropy to measure complexity and in combination with entropy gain an understanding of the structure emerging in the lattice for the self-organising networks. The authors show that the self-organising systems presented here do exhibit complex behaviour. Finally,the authors look at the robustness of these complex systems and show that they are robust against changes in the environment.

关键词： Dynamic spectrum access excess entropy robustness self organising wireless networks.

An automated water dispensing system for controlling fires in coal yards

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International Journal of Coal Science & Technology 2022年第2期9卷 220-228页

作者： Jeevan Jayasuriya irene Moser Ravi de Mel University of Sri Jayewardenepura GangodawilaNugegodaSri Lanka Swinburne University of Technology MelbourneVICAustralia

In spite of recent moves to wean the world of fossil fuels,coal remains the main source of power in many *** yards are prone to spontaneous ignition,a problem faced in every country that stores or transports *** on the environment-temperature,ventilation,and the rank of the coal-heating and self-ignition can be a longer or shorter process,but the possibility can never be entirely dismissed.A plethora of studies have modelled this oxidation behavior and proposed *** often,human intervention is necessary,which is both slow and dangerous for the frefghters *** this study,we propose to build a complete frefghting solution which is mounted on a number of towers sufcient to cover the area of an open coal yard,complete with *** tower includes an inexpensive infrared detector,a water dispenser and a controller programmed to identify areas of elevated temperature,and actuate the *** heat direction algorithm calculates the parameters to position the water dispenser so that it covers the area.A prototype has been built from inexpensive components to demonstrate the efectiveness at detecting and extinguishing arising fres,and a solution has been costed for the coal yard in the case *** work has been conducted in collaboration with the managers of the coal yard of a power plant.

关键词： Coal yard fre Fire detection Internet of things Spontaneous combustion detection Infrared heat detection

Joining of Individual Silver Nanowires via Electrical Current

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Nano-Micro Letters 2014年第4期6卷 293-300页

作者： Arash Vafaei Anming Hu irene A.Goldthorpe Department of Electrical and Computer Engineering University of Waterloo Department of Mechanical and Mechatronics Engineering University of Waterloo Department of Mechanical Aerospace and Biomedical Engineering University of Tennessee Knoxville

A procedure for joining polyol-synthesized silver nanowires in air using current-induced Joule heat welding is reported. Using a common probe station and photolithographically patterned gold electrodes, the welding process is completed using a common semiconductor analyzer. A unique two-step procedure eliminates the dielectric barrier at the point of contact without damaging the nanowires away from the junction. This procedure is designed for metal–metal contacts where a strong dielectric intermediate layer might exist, which can occur with metals prone to oxidation or corrosion in air, or as a result of the electrode deposition process. Ohmic connections are also established in cases where there is an initial gap between two nanowires.

关键词： Nanowires Nanowelding Joule heating