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Experimental analysis of infragravity waves in two eroded microtidal beaches

Acta Oceanologica Sinica 2017年第5期36卷 31-43页

作者： MARIO Conde-Frias LUIS Otero juan Camilo Restrepo juan carlos Ortiz Geosciences Research Group GE04 Department of PhysicsUniversidad del NorteBarranquilla 081007Colombia

This work aims to contribute to the characterization and understanding ofinfragravity waves on two beaches with erosion problems. For this reason, we have used an array of ADCP and a pressure sensor to measure wave parameters and pressure inside and outside of the surf zone during the dry and rainy period in the beaches of Galerazamba and Manzanillo del Mar （both dissipative and eroded beaches） located in the Colombian Caribbean coast. Based on these measurements, we have carried out a spectral analysis in order to identify the frequency components that characterize the wave and its energy; thus, we identified the characteristic frequencies of iufragravity waves to finally filter the infragravity signal on each beach in different seasonal periods. Among the results of the Welch spectrum applied to surface elevation time series, we found that, the frequencies＇ energy of the sea-swell band decreases due to bottom friction and wave breaking as the wave approaches the shore, while the frequencies＇ energy of the infragravity band increases significantly. In addition, for the wavelet analysis, we could observe how the energy of the infragravity band, especially the lowest frequencies gain energy as the waves approaches the coast. Furthermore, based on the infragravity wave obtained from the extreme wave event registered during the field campaign we can conclude that the contribution of this signal is important in the erosion problems presented in the beaches of Galerazamba and Manzanillo del Mar. Finally, these results show the need to realize other studies that allow us to understand deeply, the role of infragravity waves on the morphological changes that occurs in these beaches.

关键词： infragravity waves long waves experimental analysis fourier analysis wavelet transform

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A trichobezoar in a child with undiagnosed celiac disease: A case report

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World Journal of Gastroenterology 2014年第5期20卷 1357-1360页

作者： Iaki Irastorza carlos Tutau juan carlos Vitoria Pediatric Gastroenterology and Nutrition Unit University Hospital Cruces and School of Medicine University of the Basque Country Pediatric Gastroenterology and Nutrition Unit University Hospital Cruces

Celiac disease is a chronic, immune-mediated enteropathy caused by a permanent sensitivity to ingested gluten cereals that develops in genetically susceptible individuals. The classic presentation of celiac disease includes symptoms of malabsorption but has long been associated with cognitive, emotional, and behavioral disorders. We describe an 8-year-old patient with nonscarring alopecia and diagnosed with trichotillomania. Furthermore, she presented with a 3-year history of poor appetite and two or three annual episodes of mushy, fatty stools. Laboratory investigations showed a normal hemoglobin concentration and a low ferritin level. Serologic studies showed an elevated tissue immunoglobulin G anti-tissue transglutaminase level. A duodenal biopsy showed subtotal villous atrophy and crypt hyperplasia, and a large gastric trichobezoar was found in the stomach. Immediately after beginning a gluten-free diet, complete relief of trichotillomania and trichophagia was achieved. In this report, we describe a behavioral disorder as a primary phenomenon of celiac disease, irrespective of nutritional status.

关键词： Celiac disease Trichobezoar Trichotillomania Behavioral disorder Malabsorption syndrome

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An Intelligent Transportation System Application for Smartphones Based on Vehicle Position Advertising and Route Sharing in Vehicular Ad-Hoc Networks

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Journal of Computer Science & Technology 2018年第2期33卷 249-262页

作者： Seilendria A. Hadiwardoyo Subhadeep Patra carlos T. Calafate juan-carlos Cano Pietro Manzoni Deptartment of Computer Engineering Universitat Politecnica de Valencia Valencia 46022 Spain

Alerting drivers about incoming emergency vehicles and their routes can greatly improve their travel time in congested cities, while reducing the risk of accidents due to distractions. This paper contributes to this goal by proposing Messiah, an Android application capable of informing regular vehicles about incoming emergency vehicles like ambulances, police cars and fire brigades. This is made possible by creating a network of vehicles capable of directly communicating between them. The user can, therefore, take driving decisions in a timely manner by considering incoming alerts. Using the support of our GRCBox hardware, the application can rely on vehicular ad-hoc network communications in the 5 GHz band, being V2V （vehicle-to-vehicle） communication provided through a combination of Android-based smartphone and our GRCBox device. The application was tested in three different scenarios with different levels of obstruction, showing that it is capable of providing alerts up to 300 meters, and notifying vehicles within less than one second.

关键词： intelligent transportation systems (ITS) vehicular ad-hoc network (VANET) mobile application Android,navigation ad-hoc network

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The labyrinth of nuclear reprogramming

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Journal of Molecular Cell Biology 2011年第6期3卷 327-329页

作者： Ignacio Sancho-Martinez Emmanuel Nivet juan carlos Izpisua Belmonte Gene Expression Laboratory Salk Institute for Biological Studies10010 North Torrey Pines RoadLa JollaCA 92037USA Center for Regenerative Medicine in Barcelona Dr Aiguader 88Barcelona 08003Spain

Human embryonic stem cells(ESCs)have the capability to differentiate into all somatic cell types,a process that recapitu-lates the early stages of human ***,the use of ESCs raises several controversies,particularly concern-ing the ethical dilemma regarding the use of human embryonic material and the need for embryo *** discov-ery of induced pluripotent stem cell(iPSC)technology in 2006(Takahashi and Yamanaka,2006)opened the door for possible application of pluripotent stem-cell-related therapies in the clinic as well as for the generation of patient-derived pluripotent stem cells suitable for disease modeling in vitro.

关键词： programming destruction opened

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Linking morphological and ecophysiological leaf traits to canopy dieback in Persian oak trees from central Zagros

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Journal of Forestry Research 2019年第5期30卷 1755-1764页

作者： Ahmad Hosseini Seyed Mohsen Hosseini juan carlos Linares Department of Natural Resources AREEOIlam Agricultural and Natural Research and Education CenterIlam 69317-73835Iran Faculty of Natural Resources&Marine Sciences Tarbiat Modares UniversityNoorMazandaran 46417-76489Iran Department of Physical Chemical and Natural SystemsUniversity Pablo de OlavideCarretera de Utrera Km 141013 SevilleSpain

Intraspecific variability in morphological and ecophysiological leaf traits might be theorized to be present in declining populations,since they seem to be exposed to stress and plasticity could be *** we focused on declining Persian oaks(Quercus brantii ***(Jaub and Spach)Zohary)in the Zagros Mountains of western Iran,representing the most important tree species of this *** selected trees with contrasting crown dieback,from healthy to severely defoliated,to investigate the relationships between canopy dieback and leaf morphology,water content and *** also measured esterase and peroxidase,as enzymatic antioxidants and indicators of contrasting *** showing moderate to severe defoliation showed higher leaf mass area(LMA),reduced relative water content(RWC),and lower stomatal density(SD).Increasing LMA indicates a more sclerophyllic structure,according to drier *** did not find significant differences in leaf pigments(chlorophyll a and b,and carotenoids)among crown dieback classes,suggesting that Persian oak trees are able to maintain accurate photochemical efficiency,while reduced RWC and SD suggest hydraulic *** results do not provide a consistent pattern as regards enzymatic antioxidant defense in Persian *** leaf traits would be important drivers of future adaptive evolution in Persian oak,leading to smaller and thicker leaves,which have fitness benefits in dry ***,drought responses may be critically affecting carbon uptake,as photosynthetic compounds are less effectively used in leaves with higher sclerophylly.

关键词： Crown dieback Drought Leaf mass area Oak decline Quercus brantii Stomatal density Sclerophylly

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COMPLEX SYSTEMS IN SPORTS:INTRODUCTION TO THE SPECIAL ISSUE

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Journal of Systems Science & Complexity 2013年第1期26卷 1-3页

作者： MERELO juan Julin MORA Antonio M COTTA carlos Depto.ATC CITICUniversidad de Granada Depto.LCC Universidad de Malaga

1 Complex Systems in Sports Sport is one of the most important activities of *** relevance goes beyond the physical/psychological benefits that their practicing provides(an aspect that justifies in itself its importance in our current society).In fact,be it as actually playing some sport or just watching some games,it provides a huge means for socialization and *** to say,the economical viewpoint is also enormously relevant:events such as the Olympic Games。

关键词：复杂系统运动教育手段社会化

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Natural organic matter quantification in the waters of a semiarid freshwater wetland (Tablas de Daimiel, Spain)

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Journal of Environmental Sciences 2013年第1期25卷 114-123页

作者： Montserrat Filella juan carlos Rodríguez-Murillo Franc ois Quentel Institute F.-A. Forel University of Geneva10 route de SuisseCH-1290 Versoix Switzerland Museo Nacional de Ciencias Naturales CSICSerrano 115 E-28006 MadridSpain Laboratoire de Chimie Analytique UMR-CNRS 6521 Universit de Bretagne Occidentale6 avenue V.Le GorgeuCS 93837F-29238 Brest Cedex 3France

Dissolved organic matter （DOM） concentrations have been measured in the waters of a semiarid freshwater wetland, the Tablas de Daimiel, Spain, when the system-characterised by variable hydroperiodicity conditions, was completely flooded （February 2011）. Fluxes of DOM from the wetland soils to the overlying waters were measured by using a passive diffusion sampler （peeper）. Not only dissolved organic carbon （DOC） concentrations were measured but refractory organic matter （ROM, usually known as humic substances） was also quantified using a novel voltammetric method. Fluorescence spectra were recorded to help in selecting the appropriate standard for ROM quantification, test the homogeneity of DOM in the waters and get an indication of their source. The results obtained show a 7-fold increase in measured ROM concentrations from the Gigtiela River to the outlet, which points to a net exportation of ROM from the wetland and to the existence of an internal source of ROM in the system, probably diffusion from the wetland soils. This hypothesis is confirmed by the flux of ROM from the soils to the water column measured with the peeper and by the common fluorescence characteristics of colunm and interstitial waters. The smaller increase in DOC concentrations along the wetland, in spite of the higher DOC fluxes from soils, suggests that there is significant turnover of organic carbon （OC） in the water column. The system acts as a major carbon sink but, when flooded, exports .OC as DOM.

关键词： organic carbon natural organic matter refractory organic matter DOC ROM humic wetland Daimiel

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Laser sintering of Cu nanoparticles on PET polymer substrate for printed electronics at different wavelengths and process conditions

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Frontiers of Mechanical Engineering 2020年第2期15卷 303-318页

作者： juan carlos HERNANDEZ-CASTANEDA Boon Keng LOK Hongyu ZHENG Singapore Institute of Manufacturing Technology Singapore 138634Singapore School of Mechanical Engineering Shandong University of TechnologyZibo 255049China

This study explores the feasibility of different laser systems to sinter screen-printed lines from nonconductive copper nanoparticles(Cu NPs)on polyethylene terephthalate polymer *** materials are commonly used in manufacturing functional printed electronics for large-area ***,optical and thermal characterization of the materials is conducted to identify suitable laser sources and process *** diode(808 nm),Nd:YAG(1064 nm and second harmonic of 532 nm),and ytterbium fiber(1070 nm)lasers are *** parameters for sintering the Cu NPs are identified for each laser system,which targets low resistivity and high processing ***,the quality of the sintered tracks is quantified,and the laser sintering mechanisms observed under different wavelengths are *** considerations are discussed to improve the laser sintering process of Cu NPs.

关键词： laser sintering copper nanoparticles printed electronics

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A LoRa-based protocol for connecting IoT edge computing nodes to provide small-data-based services

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Digital Communications and Networks 2022年第3期8卷 257-266页

作者： Kiyoshy Nakamura Pietro Manzoni Alessandro Redondi Edoardo Longo Marco Zennaro juan-carlos Cano carlos T.Calafate Universitat Politécnica de Valéncia ValenciaSpain Abdus Salam International Centre for Theoretical Physics(ICTP) TriesteItaly Politecnico di Milano MilanItaly

Data is becoming increasingly *** regularly interact with a variety of structured data,ranging from SQLite databases on the phone to personal sensors and open government ***“digital traces left by individuals through these interactions”are sometimes referred to as“small data”.Examples of“small data”include driving records,biometric measurements,search histories,weather forecasts and usage *** this paper,we present a flexible protocol called LoRaCTP,which is based on LoRa technology that allows data“chunks”to be transferred over large distances with very low energy *** provides all the mechanisms necessary to make LoRa transfer reliable by introducing a lightweight connection setup and allowing the ideal sending of an as-long-as necessary data *** designed this protocol as communication support for small-data edge-based IoT solutions,given its stability,low power usage,and the possibility to cover long *** evaluated our protocol using various data content sizes and communication distances to demonstrate its performance and reliability.

关键词： Small data Edge computing LoRa IoT

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Biomedical overview of *** melanin biology and chemistry,physico-chemical properties,melanoma tumors,and photothermal therapy

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BIOCELL 2021年第4期45卷 849-862页

作者： ALFONSO BLÁZQUEZ-CASTRO juan carlos STOCKERT Department of Biology Faculty of SciencesAutonomous University of MadridCantoblancoMadrid28049Spain 2 Centro Integrativo de Biología y Química AplicadaUniversidad Bernardo O’HigginsSantiago8370854Chile 3 Universidad de Buenos AiresFacultad de Ciencias VeterinariasCátedra de Histología y Embriologíae Instituto de Investigación y Tecnología en Reproducción AnimalBuenos AiresC1427CWOArgentina

Melanins(eumelanin,pheomelanin,and allomelanin)represent a very,if not themost,important group of biological *** biological roles are multiple,from photoprotection to antioxidant activity,heavy metal disposal or the myriad uses of color in organisms across all *** the first part of this review,eumelanin biology and some chemical aspects will be presented,as well as key physico-chemical features that make this biological pigment so *** principal characteristics of the melanocyte,the melanin-synthesizing cell in mammals,will also be *** melanocytes are the cause of one of the most devastating known cancers:the malignant *** and molecular signaling aspects will be presented next,as well as the principal advances in promising oncotherapies designed and applied for the treatment of *** particular,on account of the photo-physical properties of melanin,special details will be provided regarding the use of photothermal therapy for melanoma treatment.

关键词： Antitumor therapies Biological pigments Melanin Melanoma Photothermal therapy Skin tumors

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