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Extravasated contrast volumetric assessment on computed tomography angiography in gastrointestinal bleeding:A useful predictor of positive angiographic findings

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World Journal of Radiology 2024年第5期16卷 115-127页

作者： Laura Maria Cacioppa Chiara Floridi Alessandra Bruno NicolòRossini Tommaso Valeri Alessandra Borgheresi Riccardo Inchingolo francesco Cortese Giacomo Novelli Alessandro Felicioli Mario Torresi Pietro Boscarato Letizia Ottaviani Andrea Giovagnoni Division of Interventional Radiology Department of Radiological SciencesUniversity Politecnica Delle MarcheAncona 60126Italy Department of Clinical Special and Dental SciencesUniversity Politecnica Delle MarcheAncona 60126Italy Division of Radiology Department of Radiological SciencesUniversity Hospital"Azienda Ospedaliero Universitaria Delle Marche"Ancona 60126Italy Interventional Radiology Unit "F Miulli"Regional General HospitalAcquaviva delle Fonti 70021Italy Department of Radiology IRCCS INRCAAncona 60126Italy

BACKGROUND Gastrointestinal bleeding(GIB)is a severe and potentially life-threatening condition,especially in cases of delayed *** tomography angiography(CTA)plays a pivotal role in the early identification of upper and lower GIB and in the prompt treatment of the *** To determine whether a volumetric estimation of the extravasated contrast at CTA in GIB may be a predictor of subsequent positive angiographic *** In this retrospective single-centre study,35 patients(22 men;median age 69 years;range 16-92 years)admitted to our institution for active GIB detected at CTA and further submitted to catheter angiography between January 2018 and February 2022 were ***-three(65.7%)patients underwent endoscopy before *** volumetry was evaluated in both arterial and venous phases via a semi-automated dedicated *** rate was obtained from volume change between the two phases and standardised for unit *** were divided into two groups,according to the angiographic signs and their concordance with *** Upper bleeding accounted for 42.9%and lower GIB for 57.1%.Mean haemoglobin value at the admission was 7.7 g/dL.A concordance between positive CTA and direct angiographic bleeding signs was found in 19(54.3%)*** no significant differences in terms of bleeding volume in the arterial phase(0.55 mL vs 0.33 mL,P=0.35),a statistically significant volume increase in the venous phase was identified in the group of patients with positive angiography(2.06 mL vs 0.9 mL,P=0.02).In the latter patient group,a significant increase in bleeding rate was also detected(2.18 mL/min vs 0.19 mL/min,P=0.02).CONCLUSION In GIB of any origin,extravasated contrast volumetric analysis at CTA could be a predictor of positive angiography and may help in avoiding further unnecessary procedures.

关键词： Gastrointestinal haemorrhage Computed tomography angiography Volumetric analysis Computer-assisted image interpretation Therapeutic embolization Transcatheter arterial embolization

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Paper-based WS_(2) photodetectors fabricated by all-dry techniques

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Opto-Electronic Advances 2023年第11期6卷 1-3页

作者： francesco Pieri Gianluca Fiori Dipartimento di Ingegneria dell’Informazione Universitàdi PisaPisa 56122Italy

A recent application of a simple,all-dry,abrasive transfer of 2D materials on paper demonstrates the potential of two-dimensional tungsten disulfide(WS_(2))as the sensitive material of a flexible photoconductive *** devices show really good responsivity over a bandwidth spanning from near infrared to ultraviolet and could open new avenues towards disposable optoelectronics systems.

关键词： WS_(2) ultraviolet disulfide

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Metamaterials and plasmonics: From nanoparticles to nanoantenna arrays, metasurfaces, and metamaterials

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Chinese Physics B 2014年第4期23卷 64-75页

作者： francesco Monticone Andrea Alù Department of Electrical and Computer Engineering The University of Texas at Austin 1 University Station C0803Austin Texas 78712 USA

The rise of plasmonic metamaterials in recent years has unveiled the possibility of revolutionizing the entire field of optics and photonics, challenging well-established technological limitations and paving the way to innovations at an unprecedented level To capitalize the disruptive potential of this rising field of science and technology, it is important to be able to combine the richness of optical phenomena enabled by nanoplasmonics in order to realize metamaterial components, devices, and systems of increasing complexity. Here, we review a few recent research directions in the field of plasmonic metamaterials, which may foster further advancements in this research area. We will discuss the anomalous scattering features enabled by plasmonic nanoparticles and nanoclusters, and show how they may represent the fundamental building blocks of complex nanophotonic architectures. Building on these concepts, advanced components can be designed and operated, such as optical nanoantennas and nanoantenna arrays, which, in turn, may be at the basis of metasurface devices and complex systems. Following this path, from basic phenomena to advanced functionalities, the field of plasmonic metamaterials offers the promise of an important scientific and technological impact, with applications spanning from medical diagnostics to clean energy and information processing.

关键词： plasmonics metamaterials nanoparticles scattering

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泥河湾盆地下马碑遗址2013年发掘简报

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人类学学报 2024年第1期43卷 143-156页

作者：王法岗杨石霞葛俊逸岳健平赵克良 Andreu Ollé 李文艳杨海勇刘连强关莹谢飞 francesco d’Errico Michael Petraglia 邓成龙河北省文物考古研究院石家庄050031 中国科学院脊椎动物演化与人类起源重点实验室中国科学院古脊椎动物与古人类研究所北京100044 中国科学院大学北京100049 Institut Catalàde Palaeoecologia Humana i EvolucióSocial(IPHES-CERCA) TarragonaSpain43007 蔚州博物馆张家口075799 PACEA UMR 5199 Universitéde BordeauxCNRSPessacFrance33000 Australian Research Centre for Human Evolution Griffith UniversityBrisbaneQueenslandAustraliaQld4111 岩石圈演化国家重点实验室中国科学院地质与地球物理研究所北京100029

下马碑遗址位于广义泥河湾盆地南部的蔚县盆地中东部,是坐落于壶流河二级阶地上的一处旷野遗址。2013年,河北省文物考古研究院对该遗址进行了考古发掘,揭露出丰富的遗物和遗迹现象;2018年起,国内外多家单位共同完成了遗址地层年代、埋... 详细信息

下马碑遗址位于广义泥河湾盆地南部的蔚县盆地中东部,是坐落于壶流河二级阶地上的一处旷野遗址。2013年,河北省文物考古研究院对该遗址进行了考古发掘,揭露出丰富的遗物和遗迹现象;2018年起,国内外多家单位共同完成了遗址地层年代、埋藏过程、古环境和出土文化遗存的系统性多学科研究工作。该遗址发掘揭露面积12 m^(2),地层剖面深度约为290 cm,自上而下分为7个地层单位,其中第6层为原地埋藏的主文化层,基于光释光与^(14)C测年并经贝叶斯模型计算为距今4.1~3.9万年。本文对下马碑第6层出土的各类遗物与遗迹进行系统报道,主要包括382件石制品、445件动物化石碎片、1件骨器和1套赭石颜料加工遗存,以及1处火塘。该遗址的发现与研究再现了距今4万年前东亚早期现代人加工、使用赭石颜料和复合工具的生活图景,更新了国际学术界对东亚早期现代人行为适应的认识。

关键词：泥河湾盆地下马碑遗址装柄赭石早期现代人

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Extraction of metals from automotive shredder residue: Preliminary results of different leaching systems

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Chinese Journal of Chemical Engineering 2015年第2期23卷 417-424页

作者： francesco Ferella Ida De Michelis Agostino Scocchera Mario Pelino francesco Vegliò DIIIE-Dipartimento di Ingegneria Industriale dell' Informazione ed Economia Università degli Studi di L'Aquila

The study is focused on the extraction of valuable metals from automotive shredder residue(ASR)by different leaching ***,ASR samples were roasted at 600°C to simulate a thermal treatment *** water,citric and sulphuric acid were preliminarily investigated,thus two further full factorial systems entailing H2SO4–H2O2and H2SO4–H2O2–Fe3+were *** preliminary experimental results showed that0.1 mol·L-1H2SO4solution extracted 100%of Cu,Fe and Zn,whereas citric acid leached 100%of Zn and Pb,59%of Fe and 62%of Cu;whereas,H2SO4–H2O2and H2SO4–H2O2–Fe3+(Fenton's)leaching media showed that Cu,Fe and Zn can be extracted simultaneously and completely from the ASR ashes before final disposal.

关键词： ASR Vehicles Automotive Metals Leaching ANOVA

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A supportive electrostatic model of the COVID-19 airborne transmission

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International Journal of Modeling, Simulation, and Scientific Computing 2021年第3期12卷 1-13页

作者： francesco Lattarulo Dipartimento di Ingegneria Elettrica e dell’Informazione Politecnico di Bari Via Orabona4-70126 BariItaly

A mechanism-oriented model is proposed here as a speculative but robust attempt to understand whether there might be any increased risk of electrostatically induced contamination,with relevant consequences from the epidemiological *** could also be the case for the COVID-19 spreading because an amount of micro-sized droplet nuclei,often carrying net electric charge,are expected to be electro-dynamically involved in a physical process originated by the natural and unperceivable static electrification of human *** effects of the triboelectric charging have long been successfully tested because the phenomenon under examination is also implied in the genesis of the electrostatic discharge(ESD),a demanding key objective in the special context of electromagnetic compatibility(EMC).Therefore,the ultimate purpose of this technical paper is to provide valuable insights into infection control,building on what is already being done for maintaining static-safe *** stature of the applied model can be further appreciated because some currently observed climate-dependent and sexlinked different vulnerabilities to COVID-19 are critically examined by unique sound *** ultimately focus attention on ambient relative humidity and worn shoes,the latter differing for typology,size and material,for their integrated control of the inadvertent human aptitude to buildup *** would appear as a dreadful prerequisite for charge bearing droplets in the airborne state to be efficiently attracted/repelled according to the described electrostatic mechanism.

关键词： Triboelectrification human body model COVID-19

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Resilience Against Replay Attacks:A Distributed Model Predictive Control Scheme for Networked Multi-Agent Systems

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IEEE/CAA Journal of Automatica Sinica 2021年第3期8卷 628-640页

作者： Giuseppe Franzè francesco Tedesco Domenico Famularo DIMES Department University of CalabriaArcavacata di Rende 87036Italy

In this paper,a resilient distributed control scheme against replay attacks for multi-agent networked systems subject to input and state constraints is *** methodological starting point relies on a smart use of predictive arguments with a twofold aim:1)Promptly detect malicious agent behaviors affecting normal system operations;2)Apply specific control actions,based on predictive ideas,for mitigating as much as possible undesirable domino effects resulting from adversary ***,the multi-agent system is topologically described by a leader-follower digraph characterized by a unique leader and set-theoretic receding horizon control ideas are exploited to develop a distributed algorithm capable to instantaneously recognize the attacked ***,numerical simulations are carried out to show benefits and effectiveness of the proposed approach.

关键词： Distributed model predictive control leader-follower networks multi-agent systems replay attacks resilient control

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Tetrabromobisphenol A(TBBPA): A controversial environmental pollutant

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Journal of Environmental Sciences 2020年第11期32卷 54-66页

作者： Hui Zhou Nuoya Yin francesco Faiola State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China

Tetrabromobisphenol A(TBBPA)is one of the most widely used brominated flame retardants and is extensively used in electronic equipment,furniture,plastics,and *** is frequently detected in water,soil,air,and organisms,including humans,and has raised concerns in the scientific community regarding its potential adverse health *** exposure to TBBPA is mainly via diet,respiration,and skin *** in vivo and in vitro studies based on animal and cell models have demonstrated that TBBPA can induce multifaceted effects in cells and animals,and potentially exert hepatic,renal,neural,cardiac,and reproductive ***,other reports have claimed that TBBPA might be a safe *** this review,we re-evaluated most of the published TBBPA toxicological assessments with the goal of reaching a conclusion about its potential *** concluded that,although low TBBPA exposure levels and rapid metabolism in humans may signify that TBBPA is a safe chemical for the general population,particular attention should be paid to the potential effects of TBBPA on early developmental stages.

关键词： Tetrabromobisphenol A(TBBPA) Developmental toxicity Endocrine disrupting chemicals(EDC) Hepatotoxicity Neurotoxicity

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Accuracy assessment of real-time kinematics(RTK)measurements on unmanned aerial vehicles(UAV)for direct geo-referencing

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Geo-Spatial Information Science 2020年第2期23卷 165-181页

作者： Desta Ekaso francesco Nex Norman Kerle Department of Earth Systems Analysis ITC-Faculty of Geo-Information Science and Earth Observation of the University of TwenteEnschedeThe NetherlandsDepartment of Earth Systems AnalysisITC-Faculty of Geo-Information Science and Earth Observation of the University of TwenteEnschedeThe NetherlandsDepartment of Earth Systems AnalysisITC-Faculty of Geo-Information Science and Earth Observation of the University of TwenteEnschedeThe Netherlands

Geospatial information acquired with Unmanned Aerial Vehicles(UAV)provides valuable decision-making support in many different domains,and technological advances coincide with a demand for ever more sophisticated data *** consequence is a research and development focus on more accurately referenced images and derivatives,which has long been a weakness especially of low to medium cost UAV systems equipped with relatively inexpensive inertial measurement unit(IMU)and Global Navigation Satellite System(GNSS)*** research evaluates the positional accuracy of the real-time kinematics(RTK)GNSS on the DJI Matrice 600 Pro,one of the first available and widely used UAVs with potentially surveying-grade *** a very high positional accuracy of the drone itself of 2 to 3 cm is claimed by DJI,the actual accuracy of the drone RTK for positioning the images and for using it for mapping purposes without additional ground control is not *** begin with,the actual GNSS RTK position of reference center(the physical point on the antenna)on the drone is not indicated,and uncertainty regarding this also exists among the professional user *** this study the reference center was determined through a set of experiments using the dual frequency static Leica GNSS with RTK *** RTK positioning data from the drone were then used for direct georeferencing,and its results were *** flights were carried out over a 70 x 70 m area with an altitude of 40 m above the ground,with a ground sampling distance of 1.3 *** against ground control points,the planimetric accuracy of direct georeferencing for the photogrammetric product ranged between 30 and 60 *** of direct georeferencing results showed a time delay of up to 0.28 seconds between the drone GNSS RTK and camera image acquisition affecting direct georeferencing results.

关键词： UAV GNSS RTK direct georeferencing aerial triangulation lever arm offset

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3-Phase hierarchical graphene-based epoxy nanocomposite laminates for automotive applications

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Journal of Materials Science & Technology 2019年第10期35卷 2169-2177页

作者： Ahmed Elmarakbi Panagiotis Karagiannidis Alessandra Ciappa Franco Innocente francesco Galise Brunetto Martorana francesco Bertocchi francesco Cristiano Elvira Villaro Abalos Julio Gomez Department of Mechanical and Construction Engineering Faculty of Engineering and EnvironmentNorthumbria UniversityNewcastleNE18STUnited Kingdom School of Engineering Faculty of TechnologyUniversity of SunderlandSunderlandSR6 ODDUnited Kingdom Delta-Tech S.pA. localita Rifoglieto 60/a-int.155011AltopascioLUItaly Fiat Research Center via ex Aeroporto80038 Pomigliano d'ArcoNaplesItaly Nanesa srl.Via Del Gavardello 59/c 52100 ArezzoARItaly Instituto de Tecnologfas Quimicas Emergences de La Rioja Antonio de Nebrija826006 LogronoSpain Avanzare Innovacion Tecnologica S.L Avda.Lentiscares 4-626370 NavarreteSpain

Two different types of graphene flakes were produced following solution processing methods and dispersed using shear mixing in a bifunctional(A) and a multifunctional(B) epoxy resin at a concentration of 0.8 and 0.6 wt%, respectively. The graphene/epoxy resin mixtures were used to impregnate unidirectional carbon fibre tapes. These prepregs were stacked(seven plies) and cured to produce *** interlaminar fracture toughness(mode-I) of the carbon fiber/graphene epoxy laminates with resin B showed over 56% improvement compared with the laminate without graphene. Single lap joints were prepared using the laminates as adherents and polyurethane adhesives(Sika 7666 and Sika 7888). The addition of graphene improved considerably the adhesion strength from 3.3 to 21 MPa(sample prepared with resin A and Sika 7888) highlighting the potential of graphene as a secondary filler in carbon fibre reinforced polymer composites.

关键词： Graphene Carbon fibre reinforced polymer(CFRP) Fracture toughness Shear lap joints

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