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radioisotope production using lasers:From basic science to applications

Matter and radiation at Extremes 2024年第3期9卷 31-44页

作者： M.r.D.rodrigues A.Bonasera M.scisciò J.A.pérez-Hernández M.Ehret F.Filippi p.L.Andreoli M.Huault H.Larreur D.singappuli D.Molloy D.raffestin M.Alonzo G.G.rapisarda D.Lattuada G.L.Guardo C.Verona Fe.Consoli G.petringa A.McNamee M.La Cognata s.palmerini T.Carriere M.Cipriani G.Di Giorgio G.Cristofari r.De Angelis G.A.p.Cirrone D.Margarone L.Giuffrida D.Batani p.Nicolai K.Batani r.Lera L.Volpe D.Giulietti s.Agarwal M.Krup.a s.singh Fa.Consoli Cyclotron institute Texas A&M UniversityCollege StationTexas 77840USA Laboratori Nazionali del sud Istituto Nazionale di Fisica Nucleare(LNS-INFN)CataniaItaly ENEA Fusion and Technologies for Nuclear Safety and Security Department-CFrascatiItaly Centro de Láseres pulsados(clpu) VillamayorSpain universidad de salamanca SalamancaSpain Centre Lasers Intenses et Applications(CELIA) Universitéde BordeauxCNRSCEATalenceFrance HB11 Energy Holdings pty FreshwaterNew South WalesAustralia school of Mathematics and physics Queen’s University BelfastBelfastUnited Kingdom Dipartimento di Fisica e Astronomia“E.Majorana ”Università di CataniaCataniaItaly Facoltàdi Ingegneria e Architettura Universitàdegli Studi di Enna“Kore”EnnaItaly Dipartimento di Ingegneria Industriale Universitàdi Roma“Tor Vergata”RomaItaly Dipartimento di Fisica e Geologia Universitàdegli Studi di PerugiaPerugiaItaly Istituto Nazionale di Fisica Nucleare Sezione di PerugiaPerugiaItaly ELI Beamlines Facility the Extreme Light Infrastructure ERICDolni BrezanyCzech Republic ETsIA Universidad Politécnica de MadridMadridSpain Dipartimento Fisica “E.Fermi”Universitàdi Pisa and INFNPisaItaly FZU–institute of physics of Czech Academy of sciences PragueCzech Republic institute of p.asma physics of Czech Academy of sciences PragueCzech Republic

The discovery of chirped pulse amplification has led to great improvements in laser technology,enabling energetic laser beams to be compressed to pulse durations of tens of femtoseconds and focused to a few *** with energies of tens of MeV can be accelerated using,for instance,target normal sheath acceleration and focused on secondary *** such conditions,nuclear reactions can occur,with the production of radioisotopes suitable for medical *** use of high-repetition lasers to produce such isotopes is competitive with conventional methods mostly based on *** this paper,we study the production of^(67)Cu,^(63)Zn,^(18)F,and^(11)C,which are currently used in positron emission tomography and other *** the same time,we study the reactions^(10)B(p,α)^(7)Be and^(70)Zn(p,4n)^(67)Ga to put further constraints on the proton distributions at different angles,as well as the reaction^(11)B(p,α)^(8)Be relevant for energy *** experiment was performed at the 1 pW laser facility at VegaⅢin salamanca,*** distributions of radioisotopes in the forward(with respect to the laser direction)and backward directions were measured using a high purity germanium *** results are in reasonable agreement with numerical estimates obtained following the approach of Kimura and Bonasera[*** ***.,sect.A 637,164–170(2011)].

关键词： purity estimates backward

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Contourlet HMT model with directional feature

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science china(Information sciences) 2012年第7期55卷 1563-1578页

作者： WAng XiangHai 1,2,3 ,CHEN MingYing 1 ,sOng ChuanMing 1,2 ,XU MengChun 1 & FAng LingLing 3 1 College of Computer and Information technology,Liaoning Normal university,Dalian 116029,china 2.state Key Laboratory for Novel software technology,nanjing university,nanjing 210093,china 3 provincial Key Laboratory for Computer Information processing technology,soochow university,suzhou 215006,china 1. College of Computer and Information technology Liaoning Normal University Dalian 116029 China2. State Key Laboratory for Novel Software Technology Nanjing University Nanjing 210093 China3. Provincial Key Laboratory for Computer Information Processing Technology Soochow University Suzhou 215006 China

According to shanno's information theory,the directional feature of texture is defined as the value of directional variable when an image signal attains a singularity of random *** terms of this definition,we calculate the texture's directional features using Tamura's method and study the directional probability distribution of Contourlet *** we find that the directional features tend to be conveyed across parent and child *** on this conclusion,we establish a novel probability distribution model of hidden direction variables under the condition of hidden state variable's distribution,named Contourlet HMT model with directional *** structure and training method of the model are presented as ***,an unsupervised context-based image segmentation algorithm is proposed on the basis of the proposed *** effectiveness is verified via extensive experiments carried out on several synthesized images and remote sensing images.

关键词： directional feature Contourlet HMT Contourlet HMT with directional feature unsupervised texture segmentation

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Molecular dynamics simulations on the structures and properties of ε-CL-20-based pBXs ——primary theoretical studies on HEDM formulation design

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science china Chemistry 2007年第6期50卷 737-745页

作者： XU XiaoJuan1,2, XIAO JiJun1, HUAng Hui3, LI Jinshan3 & XIAO HeMing1 1 Department of Chemistry, nanjing university of science and technology, nanjing 210094, china 2 Department of Chemistry, Yancheng Teacher’s College, Yancheng 224002, china 3 institute of Chemical Materials, china Academy of engineer.ng physics, Mianyang 621900, china Department of Chemistry Nanjing University of Science and TechnologyNanjing 210094China Department of Chemistry Yancheng Teacher''s CollegeYancheng 224002China institute of Chemical Materials China Academy of Engineering PhysicsMianyang 621900

Five polymer bonded explosives(pBXs)with the base explosive epsilon-CL-20(hexanitrohexaazaisowurtzi-tane),the most important high energy density compound(HEDC),and five polymer binders(Estane 5703,GAp,HTpB,pEG,and F_(2314))were *** dynamics(MD)method was employed to investigate their binding energies(E_(bind))patibility,safety,mechanical properties,and energetic *** information and rules were reported for choosing better binders and guiding formulation design of high energy density material(HEDM).According to the calculated binding energies,the ordering of compatibility and stability of the five pBXs was predicted as epsilon-CL-20/pEG psilon-CL-20/ Estane5703 ≈ epsilon-CL-20/GAp psilon-CL-20/HTpB psilon-CL-20/F_(2314).By pair correlation function g(r)analyses,hydrogen bonds and vdw are found to be the main interactions between the two *** elasticity and isotropy of pBXs based epsilon-CL-20 can be obviously improved more than pure epsilon-CL-20 *** is not by changing the molecular structures of epsilon-CL-20 for each binder to affect the *** safety and energetic properties of these pBXs are mainly influenced by the thermal capability(C_p^(deg))and density(p)of binders,respectively.

关键词： high energy density material (HEDM), hexanitrohexaazaisowurtzitane (CL-20), polymer bonded explosives (pBXs), molecular dynamics (MD), compatibility, safety properties, mechanical properties, energetic properties

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Early Hydration of Composite Cement with Thermal Activated Coal Gangue

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Journal of Wuhan university of technology(Materials science) 2010年第1期25卷 162-166页

作者：郭伟 Department of Material engineer.ng Yancheng Institute of Technology institute of Material science and engineer.ng Nanjing University of Technology

Composite cement samples were prepared by mixing clinker, gypsum with burnt coal gangues which was calcined at various temperatures. The mechanical strength and Ca（OH）2 content in the cement paste were tested, and the paste composition and microstructure were analyzed by thermogravimetry-differential thermal analysis （TG-DsC）, X-ray diffraction（XrD）, scanning electronic microscopy （sEM） and pore structure analysis. results demonstrate that the thermal activated coal gangue could accelerate the early hydration of cement clinker obviously, which promotes the gangue hydration itself. The early hydrated products of the cement are C-s-H gel, Ca（OH）2 and AFt. The cement with 30% （in mass） the gangue exhibits higher mechanical strength, and among all the cement samples the one with the gangue burnt at 700 ℃ disp.ays the highest hydration rate, mechanical strength, the most gel pores and the lowest total porosity.

关键词： blended cement hydration microstructure hydration product

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Geochemistry and mineralogy of beach sediments in the northern Gulf of Mexico,Tamaulipas state,Mexico:implication for provenance

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Journal of palaeogeography 2024年第3期13卷 375-400页

作者： Mayank shukla sanjeet K.Verma Mayla A.ramos-Vázquez John s.Armstrong-Altrin Karla r.Hernández-Martínez sumit Mishra Vivek p.Malviya Héctor Hernández-Mendoza posgrado de la Division de Geociencias Aplicadas Instituto Potosino de Investigacion Científica y Tecnologica(IPICYT)Camino a la Presa San José2055San Luis Potosí78216Mexico Division de Geociencias Aplicadas Instituto Potosino de Investigación Científica y Tecnologica(IPICYT)Camino a la Presa San Jose 2055San Luis Potosí78216Mexico universidad Nacional Autonoma de México Instituto de Ciencias del Mar y LimnologíaUnidad de ProcesosOceanicos y CosterosCiudad UniversitariaCiudad de México 04510Mexico Department of Marine sciences Bharathidasan UniversityTiruchirappalli620024Tamil NaduIndia instituto de Geociencias Universidad Nacional Autonoma de MéxicoBoulevard Juriquilla 300176230JuriquillaQueretaroMexico Department of Applied Geology Dr.Harisingh Gour Central UniversitySagar470002Madhya PradeshIndia instituto de Investigacion de Zonas Desérticas Universidad Autònoma de San Luis PotosíAltair 200CP 78377San LuisS.L.P.Mexico universidad del Centro de Mexico Capitán Caldera 75CP 78250San LuisS.L.P.Mexico

Geochemical and mineralogical studies were performed in the La pesca(Lp.and Tesoro Altamira(TA)beach sediments,located in the Tamaulipas state,northern Gulf of *** main aim of this study is to infer the weathering history and provenance and to discriminate the tectonic environment of the beach *** sediments are composed of quartz with small amounts of accessory minerals such as p.agioclase,calcite,orthoclase,microcline,and *** beach sediments are classified as fine-grained and very well sorted,however Lp has coarse skewed and leptokurtic sediments,whereas TA has fine-skewed and very leptokurtic *** chemical index of weathering(CIW’)indicates intense weathering in the source *** quartz grain microtextures in the Lp.and TA are classified into mechanical,chemical,and mechanical/chemical *** features such as fractures,pits,percussion marks,abrasion fatigue,and V-shaped marks favor high-energy littoral,fluvial,subaqueous-marine,and aeolian *** chemical features indicate solution pits and crystalline overgrowth,which suggests a silica saturated marine *** mechanical/chemical features disp.ay adhering particles and elongated depressions suggest formation in a sub-aqueous nearshore marine *** and trace elements-based provenance discrimination diagrams indicate a felsic source derived from the Mesa Central(MC),sierra Madre Oriental(sMOr)and Oaxaquia *** major and trace element concentrations imply a passive margin setting for the northern Gulf of Mexico,which is consistent with the general geology.

关键词： Beach sediments Geochemistry Mineralogy provenance Tamaulipas Tectonic setting

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Biomass gasification,catalytic technologies and energy integration for production of circular methanol:New horizons for industry decarbonisation

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Journal of Environmental sciences 2024年第6期140卷 306-318页

作者： Luis F.Bobadilla Lola Azancot Miriam González-Castañ Estela ruíz-López Laura pastor-pérez Francisco J.Durán-Olivencia runping Ye Katie Chong paula HBlanco-sánchez Zenthao Wu Tomás r.reina JoséA.Odriozola Departamento de Química Inorgánica e instituto de Ciencia de Materiales de sevilla Centro Mixto CSIC-Universidad de SevillaAvda.Américo Vespucio 49Sevilla 41092Spain Departamento de Ingeniería Universidad Loyola AndalucíaAvda.de Las Universidades s/nSevilla 41704Spain Key Laboratory of Jiangxi province for Environment and Energy Catalysis School of Chemistry and Chemical EngineeringNanchang UniversityNanchang330031China Energy and Bioproducts research institute(EBrI) Aston UniversityBirminghamB47ETUnited Kingdom Department of Chemical and process engineer.ng University of SurreyGuildfordGU27XHUnited Kingdom

The Intergovernmental panel on Climate Change(IpCC)recognises the pivotal role of renewable energies in the future energy system and the achievement of the zero-emission *** implementation of renewables should provide major opportunities and enable a more secure and decentralised energy supply *** fuels provide long-term solutions for the transport sector,particularly for applications where fuels with high energy density are *** addition,it helps reducing the carbon footprint of these sectors in the *** on biomass characteristics feedstock is essential for scaling-up gasification from the laboratory to *** review deals with the transformation biogenic residues into a valuable bioenergy carrier like biomethanol as the liquid sunshine based on the combination of modified mature technologies such as gasification with other innovative solutions such as membranes and microchannel *** abatement is a critical process in product gas upgrading since tars compromise downstream processes and equipment,for this,membrane technology for upgrading syngas quality is discussed in this *** reactor technology with the design of state-of-the-art multifunctional catalysts provides a path to develop decentralised biomethanol synthesis from biogenic ***,the development of a process chain for the production of(i)methanol as an intermediate energy carrier,(ii)electricity and(iii)heat for decentralised applications based on biomass feedstock flexible gasification,gas upgrading and methanol synthesis is analysed.

关键词： Biogenic residues Gasification Biomethanol Circular Economy Microreactors

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An Intelligent sDN-IoT Enabled Intrusion Detection system for Healthcare systems Using a Hybrid Deep Learning and Machine Learning Approach

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china communications 2024年第10期21卷 267-287页

作者： r Arthi s Krishnaveni sherali Zeadally Computational Intelligence School of ComputingSRMISTKattankulathurChennaiIndia College of Communication and Information University of KentuckyUSA

The advent of pandemics such as COVID-19 significantly impacts human behaviour and lives every ***,it is essential to make medical services connected to internet,available in every remote location during these ***,the security issues in the Internet of Medical Things(IoMT)used in these service,make the situation even more critical because cyberattacks on the medical devices might cause treatment delays or clinical ***,services in the healthcare ecosystem need rapid,uninterrupted,and secure *** solution provided in this research addresses security concerns and services availability for patients with critical health in remote *** research aims to develop.an intelligent software Defined Networks(sDNs)enabled secure framework for IoT healthcare *** propose a hybrid of machine learning and deep learning techniques(DNN+sVM)to identify network intrusions in the sensor-based healthcare *** addition,this system can efficiently monitor connected devices and suspicious ***,we evaluate the performance of our proposed framework using various performance metrics based on the healthcare application *** experimental results show that the proposed approach effectively detects and mitigates attacks in the sDN-enabled IoT networks and performs better that other state-of-art-approaches.

关键词： deep neural network healthcare intrusion detection system IoT machine learning software-defined networks

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structure and pozzolanic Activity of Calcined Coal Gangue during the process of Mechanical Activation

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Journal of Wuhan university of technology(Materials science) 2009年第2期24卷 326-329页

作者：郭伟 Department of Material engineer.ng Yancheng Institute of Technology institute of Material science and engineer.ng Nanjing University of Technology

On the basis of analyzing coal gangue＇s chemical and mineral compositions, the structure change of coal gangue during the mechanical activation was investigated by XrD, FTIr, NMr, and the mechanical strength of the cement doped coal gangue with various specific surface area was tested. The experimental results indicate that, the lattice structure of metakaolin in coal gangue samples calcined at 700 ℃ disorganizes gradually and becomes disordered, and the lattice structure of α-quartz is distorted slightly. The pozzolanic activity of the coal gangue increases obviously with its structural disorganization.

关键词： coal gangue mechanical activation structure NMr tetrahedron

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Artificial Tactile sense Technique for predicting Beef Tenderness Based on Fs pressure sensor

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Journal of Bionic engineer.ng 2009年第2期6卷 196-201页

作者： Xiao-dan Wang~1,Yong-hai sun~1,Ying Wang~2,Tie-jun Hu~3,Min-hua Chen~1,Bing He~31.school of Biological and Agricultural engineer.ng,Jilin university,Changchun 130022,p.r.china2.school of Food science and engineer,Qingdao Agricultural university,Qingdao 266109,p.r.china3.Jilin province Changchun Haoyue Halal Meat Co.,Ltd,Changchun 130013,p.r.china [a]school of Biological and Agricultural engineer.ng Jilin University Changchun 130022 P. R. China [b]School of Food Science and Engineer Qingdao Agricultural University Qingdao 266109 P. R. China [c]Jilin Province Changchun Haoyue Halal Meat Co. Ltd Changchun 130013 P. R. China

We present a rapid system for predicting beef tenderness by mimicking the human tactile sense. The detection system includes a Fs pressure sensor, a power supply conversion circuit, a signal amplifier and a box in which the sample is mounted. A sample of raw Longissimus dorsi (LD) muscle is p.aced in the measuring box; then a rod connected to the pressure sensor is pressed into the beef sample to a given depth; the reaction force of the beef sample is measured and used to predict the tenderness. sensory evaluation and Warner-Bratzler shear Force (WBsF) evaluation of samples from the same LD muscle are used for comparison. The new detection system agrees with established procedure 95% of the time, and the time to test a sample is less than 5 minutes.

关键词： bionics tactile sense beef tenderness detection Fs pressure sensor

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reducing component estimation for varying coefficient models with longitudinal data

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science china Mathematics 2008年第2期51卷 250-272页

作者： TAng QingGuo~(1,2+) WAng JinDe~2 1 institute of sciences,people’s Liberation Army university of science and technology,nanjing 2.0007,china 2 Department of Mathematics,nanjing university,nanjing 210093,china 1. institute of sciences People’s Liberation Army University of Science and Technology Nanjing 210007 China 2. Department of Mathematics Nanjing University Nanjing 210093 China

Varying-coefficient models with longitudinal observations are very useful in epidemiology and some other p.actical *** this paper,a reducing component procedure is proposed for es- timating the unknown functions and their derivatives in very general models,in which the unknown coefficient functions admit different or the same degrees of smoothness and the covariates can be time- *** asymptotic properties of the estimators,such as consistency,rate of convergence and asymptotic distribution,are *** asymptotic results show that the asymptotic variance of the reducing component estimators is smaller than that of the existing estimators when the coefficient functions admit different degrees of *** sample properties of our procedures are studied through Monte Carlo simulations.

关键词： varying coefficient model longitudinal data nonparametric estimation reducing component estimators asymptotic normality 62G07

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