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Post-fire Behavior of Ordinary Concrete Reinforced with Short Steel Fibers

Journal of Civil Engineering and Architecture 2015年第3期9卷 262-267页

作者： Augusto Cesar da Silva Bezerra Elaine Carbalho Siqueira Correa maria teresa paulino aguilar Paulo Roberto Cetlin Department of Materials Engineering Federal Center for Technological Education of Minas Gerais Belo Horizon te 30421-169 Brazil Department of Materials Engineering and Civil Construction Federal University of Minas Gerais Belo Horizonte 31270-901 Brazil Department of Mechanical Engineering Federal University of Minas Gerais Belo Horizonte 31270-901 Brazil

Concrete is a widely used material in civil construction and may be submitted to high working temperatures under various circumstances. Many factors influence the behavior of this material at high temperatures, which usually leads to the evaporation of the hydrated cement. The dehydrated cement undergoes a contraction, simultaneously with the thermal expansion of the inert fraction of the material. As a consequence of these conflicting expansions and contractions, the material cracks and its strength and modulus of elasticity decrease significantly. On the other hand, the addition of short metallic fibers to the material increases its toughness, probably due to its action on the cracking behavior of the composite. It is thus expected that a concrete containing metallic fibers should maintain its original properties even after exposure to elevated temperatures. This paper presents an evaluation of the influence of steel fibers on the microstructure and toughness of concretes submitted to high tenaperatures. The bending behavior, under strain rate control, of concretes with a strength of 30 MPa and containing short steel fibers, submitted to a previous treatment at 500 ℃, was analyzed. It was observed that, after both heat treatments, the addition of metallic fibers to concrete was able to maintain the pseudo-ductility and load-carrying capacity of this composite material.

关键词： Steel fibers microstructure concrete temperature.

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On the Range of Action of Adult Culex pipiens s.l.

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Journal of Biosciences and Medicines 2024年第3期12卷 113-121页

作者： maria da Conceição Proença maria teresa Rebelo Department of Physics and MARE-ULisboa Marine and Environmental Sciences Centre & ARNET Aquatic Research Infrastructure Network Associated Laboratory Faculty of Sciences University of Lisbon Lisbon Portugal Department of Animal Biology and CESAM_Ciências Centre for Environmental and Marine Studies Faculty of Sciences University of Lisbon Lisbon Portugal

Mosquitoes are an interesting topic due to their medical importance, as they play an active role in the transmission of many pathogens and parasites, acting as vectors for various pathologies that are deadly to humans, such as dengue, yellow fever, chikungunya, West Nile virus, encephalitis and malaria, among many others that are less common. In terms of morbidity and mortality caused by vector-borne diseases, mosquitoes are the most dangerous animals for humanity and, although they also play a role in the ecosystem as a food source for other organisms, their importance for public health cannot be overlooked. As highly efficient vectors, they put more than three billion people at risk, mainly in tropical and subtropical regions as well as in Europe, since heat waves and flooding are becoming more frequent and severe, and summers are getting longer and warmer, accelerating mosquito development, biting rates, and the incubation of the pathogens within their bodies. Female mosquitoes bite to acquire proteins for the development of their ovaries and eggs and, in the process, acquire pathogens and/or parasites from one vertebrate host and transmit them to another, usually after a short period of replication. Three of their four life stages are lived in still freshwater, so it is crucial to understand their range of action when they reach adulthood and leave the water, in order to plan and implement local prevention measures. A set of georeferenced abundance data collected in mainland Portugal over seven years was linked to cartographed water bodies in a geographic information system to estimate the distances at which Culex pipiens s.l. had a significant presence, with criteria based on the size of the catches. The result allows for an estimate of the fly range of those mosquitoes, which can be used to focus countermeasures.

关键词： Mosquito Fly Distance Vector-Borne Diseases Culex pipiens s.l. Geographic Information Systems

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元宇宙商业环境对年轻一代消费者奢侈品牌购买意向的探讨

元宇宙商业环境对年轻一代消费者奢侈品牌购买意向的探讨

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作者： maria teresa Fulgieri 华东师范大学

学位级别：硕士

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面向结构动力学测试的整体叶盘数字孪生技术

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航空动力学报 2024年

作者：周标谢诚语 Giuseppe Battiato teresa maria Berruti 都灵理工大学机械与航空工程学院南京航空航天大学能源与动力学院

针对几何失谐整体叶盘结构动力学特性评估问题，开展基于先进光学几何测量技术的高保真整体叶盘数字孪生建模、高性能结构动力学仿真分析和试验验证研究。首先，采用三维结构蓝光扫描系统测取叶片几何型面的高分辨率点云模型，将其直接... 详细信息

针对几何失谐整体叶盘结构动力学特性评估问题，开展基于先进光学几何测量技术的高保真整体叶盘数字孪生建模、高性能结构动力学仿真分析和试验验证研究。首先，采用三维结构蓝光扫描系统测取叶片几何型面的高分辨率点云模型，将其直接关联至谐调整体叶盘设计有限元模型，通过网格自适应变形技术实现高保真整体叶盘数字孪生模型的高效构建。其次，整体叶盘数字孪生高性能动力学仿真分析方法立足于大规模几何失谐整体叶盘模型的新型动力学减缩技术，其核心是利用各几何失谐单扇区结构的循环对称模态振型来构建数字孪生整盘模型的减缩模态基底，以减少计算内存和时长的消耗。试验结果表明，针对实体整体叶盘模拟件结构构建的高保真数字孪生模型既能有效地捕获叶片微小几何失谐对其“扇区”频率和振型的影响，也能较为准确地预测旋转整体叶盘在发动机阶次激励作用下的失谐振动响应特性。

关键词：整体叶盘几何测量模型减缩旋转测试数字孪生

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A Comparison of Airborne Formaldehyde Field Measurements Collected in an Anatomic Pathology Laboratory

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Journal of Environmental Protection 2024年第8期15卷 827-841页

作者： maria teresa Piccardo Massimo Cipolla Alberto Izzotti Paola Canepa Vincenzo Fontana Mutagenesis& Cancer Prevention Unit IRCCS Ospedale Policlinico San Martino Genova Italy Department of Experimental Medicine (DIMES) University of Genova Genova Italy Clinical Epidemiology Unit IRCCS Ospedale Policlinico San Martino Genova Italy

Environmental monitoring of airborne formaldehyde (FA) using sensitive methodologies is fundamental to prevent health risks. The objective of this study was to compare three different FA monitoring methods during the daily activities of an anatomic pathology laboratory. Daily eight-hour measurements deriving from Radiello® passive diffusive samplers (PDS), NEMo XT continuous optical sensor (COS), and multi-gas 1512 photoacoustic monitor (MPM) were simultaneously compared over a period of 14 working days. Given the different daily distributions of the measurements performed by the three devices, all measurements were time-aligned for comparison purposes. The 95% limit of agreement (LOA) method was applied to estimate the degree of concordance of each device with respect to the others. Formaldehyde arithmetic mean measured using PDS was 32.6 ± 10.4 ppb (range: 19.8 - 62.7). The simultaneous measures performed by COS and MPM were respectively 42.4 ± 44.8 ppb (range: 7.0 - 175.0) and 189.0 ± 163.7 ppb (range: 40.0 - 2895.4). The MPM geometric mean (171.3 ppb) was approximately five times higher than those derived from COS (32.3 ppb) and PDS (31.4 ppb). The results of the LOA method applied to log-transformed FA data showed the same systematic discrepancies between MPM and the other two devices. A good agreement between PDS and COS could lead to a tailored approach according to the individual specificity of these techniques. This tool may be useful for accurately assessing the risk of FA exposure among healthcare workers. However, the limited specificity of the MPM does not support its use as a monitoring method for FA in the workplace.

关键词： Occupational Exposure Occupational Health Formaldehyde Monitoring Devices Indoor Air Quality

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The plasticity of plasticity:lesson from remote microglia induced by focal central nervous system injury

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Neural Regeneration Research 2020年第1期15卷 57-58页

作者： maria teresa Viscomi Institute of Histology and Embriology Università Cattolica del S.Cuore

The last decades have represented an important season in the re-conceptualization of brain plasticity,especially in extending the concept at events occurring beyond the developmental stage and in demonstrating the profound impact of these changes on so-called spontaneous recovery after central nervous system(CNS)*** study of the cellular,molecular,functional and structural mechanisms involved in brain plasticity has clearly emphasized the multitude of players engaged in this phenomenon,leading to the conceptualization that non-neuronal cells and non-neuronal mechanisms intervene in these changes and orchestrate some of the responses observed(Werner and Stevens,2015).Among the different non-neuronal cells and non-neuronal substrates of injury-induced plasticity is becoming increasingly recognized that microglia drive a series of intrinsic CNS responses after damage(Sandvig et al.,2018;Bisicchia et al.,2019).

关键词： plasticity system injuries

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Estrogen/Huntingtin:a novel pathway involved in neuroprotection

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Neural Regeneration Research 2016年第3期11卷 402-403页

作者： maria teresa Nuzzo maria Marino Department of Science-Division of Biomedical Sciences and Technologies University Roma Tre

Neurodegenerative diseases（NDs）include more than 600 disease entities that are characterized by loss of specific neurons located in anatomically related functional areas which progressively lead to motor and cognitive *** pathogenesis of NDs involves mitochondrial dysfunction/oxidative stress,programmed cell death or abnormal protein aggregation,trafficking,and/or *** most cases,

关键词： programmed mitochondrial pathogenesis progressively aggregation oxidative abnormal neuronal caspase physiological

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Setting a highway for converting skin into neurons

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分子细胞生物学报:英文版 2011年第6期3卷 322-323页

作者： Vania Broccoli Massimiliano Caiazzo maria teresa Dell’Anno San Raffaele Scientific Institute Via Olgettina 58Milan 20132Italy

Direct conversion of human skin fibroblasts into induced neuronal(iN)cells has been recently achieved by using different combi-nations of transcription factors eventually associated with *** findings lay the ground for a straightforward and effi-cient generation of human neurons in vitro with elaborated functional properties instrumental for disease modeling and cell-based approaches of brain repair.

关键词： eventually straight finding

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Early life stress-induced neuroinflammation and neurological disorders: a novel perspective for research

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Neural Regeneration Research 2022年第9期17卷 1971-1972页

作者： Clarissa Catale Valeria Carola maria teresa Viscomi Division of Experimental Neuroscience IRCCS Santa Lucia FoundationRomeItaly Department of Dynamic and Clinical Psychology and Health StudiesSapienza University of RomeRomeItaly Department of Life Science and Public Health Section of Histology and EmbryologyUniversitàCattolica del S.CuoreRomeItaly

Childhood maltreatment(CM)has been consistently linked with numerous detrimental outcomes concerning physical and psychological ***,few studies have explored vulnerability to neurological disorders after *** life adversity,in the form of poverty,stress and abuse,has been associated with decline in cognitive function and dementia later in life(Short and Baram,2019).Robust preclinical data suggest that early life stress(ELS)may increase the risk and worsen the course of neurological disorders such as Alzheimer’s(AD)and Parkinson’s(PD)diseases,and traumatic brain injury(TBI)(Lesuis et al.,2018;Short and Baram,2019;He et al.,2020;Catale et al.,2021;Sanchez et al.,2021).

关键词： neurological disorders inflammation

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Reviewing the discoverability and accessibility to data and information products linked to Essential Climate Variables

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International Journal of Digital Earth 2020年第2期13卷 236-252页

作者： maria teresa Miranda Espinosa Gregory Giuliani Nicolas Ray Institute for Environmental Sciences enviroSPACE labUniversity of GenevaGenevaSwitzerland Institute for Environmental Sciences GRID-GenevaUniversity of GenevaGenevaSwitzerland GeoHealth Group Institute of Global HealthFaculty of MedicineUniversity of GenevaGenevaSwitzerland'

Essential Climate Variables(ECVs)are geophysical records generated from systematic Earth Observations associated with climate variations,changes,and *** products support the data and information needs of international frameworks and policies such as the work of the United Nations Framework Convention on Climate Change(UNFCCC)and the Intergovernmental Panel on Climate Change(IPCC).We map the main networks and initiatives publishing ECVs,by presenting an overview of existing satellite-based ECVs,their general data creation characteristics,discoverability and accessibility methods from an end-user *** investigate key initiatives providing or coordinating access to ECV data records,such as the Global Climate Observing System(GCOS),the Committee on Earth Observation Satellites(CEOS),the Coordination Group for Meteorological Satellites(CGMS),Joint Working Group on Climate(WGClimate),the Remote Sensing Systems(REMSS),and the European Space Agency Climate Change Initiative(ESA CCI).We find that ECV data discovery and access is difficult and time consuming due to the lack of common data and metadata *** addition,the selection of fit-for-purpose data records by end-users requires the implementation of interoperable standards and scalable data infrastructures to allow the generation of tailored applications and datadriven information products in support of decision-making processes.

关键词： Essential Climate Variables Climate services discoverability accessibility usability

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