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Equidistribution in Sharing Games

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Open Journal of Discrete Mathematics 2014年第1期4卷 9-18页

作者： Carlos D’ Andrea emiliano Gómez Departament d’àlgebra i Geometria Universitat de Barcelona Barcelona Spain Department of Mathematics University of California Berkeley Berkeley USA

Games often provide a good introduction to interesting phenomena in mathematics. In this note, we examine three variations of an iterative sharing game played around a circular (or not so circular) table. More precisely, for each variation, we study the tendency toward equal distribution among the players. In the first variation, the players have discrete amounts at each step. The second variation removes this restriction, and the third one considers an infinitely long table with an infinite number of players.

关键词： Equidistribution Iteration Linear Transformation Limit Distribution

Simulating Microbial Functional Diversity Dynamics in Agricultural Soils: An Individual Based Modeling Approach

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Advances in Bioscience and Biotechnology 2022年第3期13卷 159-174页

作者： Diego Rubio Fernandez emiliano Barreto-Hernández Biotechnology Institute Research Group Bioinformatica Universidad Nacional de Colombia Bogota Colombia

New agricultural soil model approaches based on the microbiome dynamics must be considered as they can contribute to understand microbiological soil processes directly linked to substrate metabolism and the influence of these processes on plant growth. The present work presents an approach to the modelling of the interactions of the soil microbial functional diversity with the plant in terms of functions associated to specific processes of organic Carbon and Nitrogen metabolism. The substrates transformations arising in the organic matter that enters as a part of an agricultural scheme are the base for define this metabolism. As result, it has been possible to simulate a rhizospheric soil based on the concept of complex system dynamics and Individual Based Modeling known too as Agent-Based Modeling in an agricultural management context. The explicit definition of the microbiome functional diversity and the processing of the structural elements Carbon and Nitrogen, allowed representing the functional dynamics of this complex system composed by microorganisms, Carbon, Nitrogen and the plant. The variables that reflect the biology and the adaptation to the rhizospheric environment characterized the microorganisms and the assemblage community patterns in time. The main simulations output are system glucose and nitrate levels and an approach to plant growth, all resultant from the metabolic process of the considered Carbon and Nitrogen consortia. The results indicate that the microorganism’s diversity assemblages and its functional expression have a fundamental role in terms of plant growth.

关键词： System Dynamics Soil Microbiota Agricultural Productivity Microbial Ecology Netlogo

Non-linear self-driven spectral tuning of Extreme Ultraviolet Femtosecond Pulses in monoatomic materials

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Light(Science & Applications) 2021年第6期10卷 950-956页

作者： Carino Ferrante emiliano Principi Andrea Marini Giovanni Batignani Giuseppe Fumero Alessandra Virga Laura Foglia Riccardo Mincigrucci Alberto Simoncig Carlo Spezzani Claudio Masciovecchio Tullio Scopigno Graphene Labs Istituto Italiano di TecnologiaVia Morego 3016163 GenovaItaly. Center for Life Nano Scie nee@Sapie nza Istituto Italia no di Tecno logiaViale Regina Elena 2911-00161 RomaItaly Dipartimento di Fisica Universita di Roma"La Sapienza"Piazzale Aldo Moro 500185 RomaItaly. Elettra-Sincrotrone Trieste S.C.p.ASS 14-km 163.5 34149 BasovizzaTriesteItaly Dipartimento di Scienze Fisiche e Chimiche Universita degli Studi dell'AquilaVia Vetoio67100 L'AquilaItaly

Self-action nonlinearity is a key aspect either as a foundational element or a detrimental factor of several optical spectroscopies and photonic *** generation,wavelength converters,and chirped pulse amplification are just a few *** recent advent of Free Electron Lasers(FEL)fostered building on nonlinearity to propose new concepts and extend optical wavelengths paradigms for extreme ultraviolet(EUV)and X-ray *** evidence for intrapulse dynamics,however,has been reported at such short wavelengths,where the light-matter interactions are ruled by the sharp absorption edges of core ***,we provide experimental evidence for self-phase modulation of femtosec ond FEL pulses,which we exploit for fine self-driven spectral tun ability by interaction with sub-micrometric foils of selected monoatomic *** the pulse wavelength across the absorption edge,the spectral profile changes from a non-linear spectral blue-shift to a red-shifted *** findings are rationalized account!ng for ultrafast ionization and delayed thermal response of highly excited electrons above and below threshold,respectively.

关键词： tuning Femto spectral

Development of a 3D subcutaneous construct containing insulin-producing beta cells using bioprinting

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Bio-Design and Manufacturing 2022年第2期5卷 265-276页

作者： Chi B.Ahn Ji-Hyun Lee Joo H.Kim Tae H.Kim Hee-Sook Jun kuk H.Son Jin W.Lee Department of Molecular Medicine College of MedicineGachon University155Gaetbeol-roYeonsu-kuIncheonRepublic of Korea Department of Health Sciences and Technology GAIHSTGachon University155Gaetbeol-roYeonsu-kuIncheonRepublic of Korea College of Pharmacy Gachon University191Hambangmoe-roYeonsu-kuIncheonRepublic of Korea Department Thoracic and Cardiovascular Surgery Gachon University Gil Medical CenterCollege of MedicineGachon University21Namdong-daero 774 beon-gilNamdong-guIncheonRepublic of Korea

Type 1 diabetes is caused by insulin deficiency due to the loss of beta cells in the islets of *** severe cases,islet transplantation into the portal vein is ***,due to the loss of transplanted islets and the failure of islet function,the 5-year insulin independence rate of these patients is<50%.In this study,we developed a long-term,insulin-secreting,3 Dbioprinted construct implanted subcutaneously with the aim of preventing islet *** bioprinted construct was fabricated by the multi-layer bioprinting of beta-cell(mouse insulinoma-6:MIN-6)-encapsulated alginate bioink and poly(caprolactone)biodegradable polymer.A glucose response assay revealed that the bioprinted constructs proliferated and released insulin normally during the 4-week in vitro *** MIN-6 generated clusters with a diameter of 100-200μm,similar to the original pancreatic islets in the *** an in vivo study using type 1 diabetes mice,animals implanted with bioprinted constructs showed three times higher insulin secretion and controlled glucose levels at 8 weeks after *** the implanted,bioprinted constructs had a positive effect on insulin secretion in the experimental animals,the survival rate of the implanted group(75%)was three times higher than that of the non-implanted group(25%).The results suggest that the proposed,3 D-bioprinted,subcutaneous construct can be a better alternative to portal vein islet transplantation.

关键词： 3D bioprinting Subcutaneous construct Type 1 diabetes Insulin Beta cells

Unilateral pleuroparenchymal fibroelastosis as a rare form of idiopathic interstitial pneumonia:A case report

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World Journal of Clinical Cases 2020年第18期8卷 4186-4192页

作者： Jae-Ha Lee Hang-Jea Jang Jin-Han Park Hyun-kuk Kim Sunggun Lee Ji-Yeon Kim Seong-Ho Kim Department of Internal Medicine Haeundae Paik HospitalInje University College of MedicineBusan 48108South Korea Department of Pathology Haeundae Paik HospitalInje University College of MedicineBusan 48108South Korea

BACKGROUND Pleuroparenchymal fibroelastosis(PPFE)is a rare idiopathic interstitial pneumonia characterized by predominantly upper lobe involvement with pleural fibrosis and subjacent parenchymal ***,there have been increasing reports of PPFE,and PPFE might coexist with other interstitial lung diseases in the lower lobe and upper ***,cases of unilateral PPFE are *** SUMMARY A 75-year-old Korean male presented to our hospital with chronic dry cough and exertional *** patient’s symptoms started 6 mo previously and had been gradually *** the time of presentation,he felt dyspnea when walking at his own *** findings suggested PPFE,but the lesion was localized in the upper lobe of the right *** multidisciplinary discussion,a transbronchial lung biopsy in the right upper lobe revealed collapsed alveoli with parenchymal fibroelastosis,and elastic van Gieson staining demonstrated septal elastosis with intra-alveolar collagenosis,which met the histopathologic criteria of definite *** multidisciplinary discussion in an experienced interstitial lung disease center,we confirmed the diagnosis of unilateral ***,we confirmed the progression of PPFE on radiologic findings during the followup *** Clinicians should consider PPFE,even in cases with unilateral,predominantly upper lung involvement in interstitial lung disease patients through multidisciplinary discussion.

关键词： Interstitial lung disease Pleuroparenchymal fibroelastosis Progression Unilateral Multidisciplinary discussion Case report

Pyrenetetraone-based covalent organic framework as an effective electrocatalyst for oxygen reduction reaction

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Nano Research 2022年第5期15卷 3907-3912页

作者： Paloma Garcia-Arroyo emiliano Martinez-Perinan Jorge J.Cabrera-Trujillo Elena Salagre Enrique G.Michel Jose I.Martinez Encarnacion Lorenzo Jose L.Segura Departamento de Quimica Organica I Facultad de CC.QuimicasUniversidad Complutense de Madrid28040 MadridSpain Departamento de Quimica Analitica y Analisis Instrumental Facultad de CienciasUniversidad Autónoma de Madrid28049 MadridSpain Departamento de Fisica de la Materia Condensada Universidad Autónoma de Madrid28049 MadridSpain Condensed Matter Physics Center(IFIMAC) Universidad Autónoma de Madrid28049 MadridSpain Departamento de Nanoestructuras SuperficiesRecubrimientos y Astrofisica MolecularInstituto de Ciencia de Materiales de Madrid(ICMMCSIC)28049 MadridSpain Instituto Madrileno de Estudios Avanzados en Nanociencia(IMDEA-Nanociencia) 28049 MadridSpain Institute for Advanced Research in Chemical Sciences(IAdChem) Universidad Autonoma de Madrid28049 MadridSpain

A novel porous and crystalline two-dimensional(2D)electrochemically active covalent organic framework(COF)based on ortho-quinone units has been prepared as an innovative approach towards the development of organic cathode materials with multiple redox sites as an efficient electrocatalyst for the oxygen reduction reaction(ORR).In contrast with most of the previously reported COFs as electrocatalysts for the ORR,the electrocatalytic application of this material towards ORR has been investigated without adding any metal or conductive supporting material and avoiding any additional carbonization ***,the electrochemical properties of the COF material have been compared with two analogue amorphous frameworks with similar chemical composition,which points out the important role of the enhanced crystallinity and porosity of the COF network in its superior performance as an electrocatalyst towards ORR.

关键词： electrocatalysis oxygen reduction reaction metal free pyrenetetraone covalent organic framework

Deep-learning-based gas identification by timevariant illumination of a single micro-LEDembedded gas sensor

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Light(Science & Applications) 2023年第5期12卷 826-837页

作者： Incheol Cho Kichul Lee Young Chul Sim Jae-Seok Jeong Minkyu Cho Heechan Jung Mingu Kang Yong-Hoon Cho Seung Chul Ha kuk-Jin Yoon Inkyu Park Department of Mechanical Engineering Korea Advanced Institute of Science and Technology(KAIST)291 Daehak-roYuseong-guDaejeon 34141Republic of Korea Department of Physics Korea Advanced Institute of Science and Technology(KAIST)291 Daehak-roYuseong-guDaejeon 34141Republic of Korea SENKO Co. Ltd.485Oesammi-DongOsan-SiGyeonggil-Do 18111Republic of Korea

Electronic nose(e-nose)technology for selectively identifying a target gas through chemoresistive sensors has gained much attention for various applications,such as smart factory and personal health *** overcome the crossreactivity problem of chemoresistive sensors to various gas species,herein,we propose a novel sensing strategy based on a single micro-LED(μLED)-embedded photoactivated(μLP)gas sensor,utilizing the time-variant illumination for identifying the species and concentrations of various target gases.A fast-changing pseudorandom voltage input is applied to the μLED to generate forced transient sensor responses.A deep neural network is employed to analyze the obtained complex transient signals for gas detection and concentration *** proposed sensor system achieves high classification(~96.99%)and quantification(mean absolute percentage error~31.99%)accuracies for various toxic gases(methanol,ethanol,acetone,and nitrogen dioxide)with a single gas sensor consuming 0.53 *** proposed method may significantly improve the efficiency of e-nose technology in terms of cost,space,and power consumption.

关键词： Deep illumination transient

Gastroduodenal Artery Reconstruction as Salvage Procedure for Pancreas Head Ischemia during Transplantation: A Case Report

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Open Journal of Organ Transplant Surgery 2012年第4期2卷 25-27页

作者： Raquel Garcia-Roca emiliano Astudillo Pombo Department of Surgery University of Barcelona Barcelona Spain

Vascularization of the pancreatic allograft depends on the mesenteric and celiac arteries. During procurement inadvertent sectioning of the branches to the head of the pancreas can lead to ischemia and generally there is a need to remove the graft during the same transplant procedure. Knowledge of several unconventional revascularization techniques in the back table and other salvage procedures after reperfusion can be useful in deciding the fate of the graft once ischemia is established immediately after engraftment. We present a case of revascularization of the gastroduodenal artery after reperfusion of the pancreas to improve blood flow to the head of the pancreas that was ischemia after restoring circulation.

关键词： Pancreas Transplantation Surgical Techniques Gastroduodenal Reconstruction Iliac Jump Graft

Two faces of Schwann cell dedifferentiation in peripheral neurodegenerative diseases:pro-demyelinating and axon-preservative functions

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Neural Regeneration Research 2014年第22期9卷 1952-1954页

作者： Jong kuk Kim Hye Jeong Lee Hwan Tae Park Department of Neurology Mitochondria Hub Regulation Center(MHRC)College of MedicineDong-A UniversityBusanSouth Korea Department of Pharmacology Mitochondria Hub Regulation Center (MHRC)College of MedicineDong-A UniversityBusanSouth Korea Department of Physiology Mitochondria Hub Regulation Center (MHRC)College of MedicineDong-A UniversityBusanSouth Korea

Schwann cells are glial cells that are responsible for the synthesis and maintenance of the myelin sheath in the peripheral nerve system. Under pathological conditions, such as physical nerve injury and inflammatory neuropathies, Schwann cells undergo a substantial phenotype transformation that is not related to their intended function. For example, Schwann cells dedifferentiate into immature states and thereby cease to express myelin genes after nerve injury.

关键词： cell Two faces of Schwann cell dedifferentiation in peripheral neurodegenerative diseases