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Experimental analysis of infragravity waves in two eroded microtidal beaches

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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

A neural network to predict reactor core behaviors

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Nuclear Science and Techniques 2014年第1期25卷 75-80页

作者： juan Jose ortiz-Servin David A.Pelta Jose Alejro Castillo Instituto Nacional de Investigaciones Nucleares Carretera Mexico Toluca S/NLa Marquesa OcoyoacacEstado de Mexico ETS Ingenieria Informatica y Telecomunicaciones Universidad de GranadaC/Daniel Saucedo Aranda

The global fuel management problem in BWRs(Boiling Water Reactors) can be understood as a very complex optimization problem,where the variables represent design decisions and the quality assessment of each solution is done through a complex and computational expensive *** last aspect is the major impediment to perform an extensive exploration of the design space,mainly due to the time lost evaluating non promising *** this work,we show how we can train a Multi-Layer Perceptron(MLP) to predict the reactor behavior for a given *** trained MLP is able to evaluate the configurations immediately,thus allowing performing an exhaustive evaluation of the possible configurations derived from a stock of fuel lattices,fuel reload patterns and control rods *** our particular problem,the number of configurations is approximately 7.7×10^(10);the evaluation with the core simulator would need above 200 years,while only 100hours were required with our approach to discern between bad and good *** later were then evaluated by the simulator and we confirm the MLP *** good core configurations reached the energy requirements,satisfied the safety parameter constrains and they could reduce uranium enrichment costs.

关键词：神经网络预测行为质量评估堆芯沸水反应堆多层感知器 MLP 优化问题

Suspended sediment transport in the Magdalena River(Colombia,South America):Hydrologic regime,rating parameters and effective discharge variability

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International Journal of Sediment Research 2016年第01期31卷 25-35页

作者： Aldemar Higgins juan Camilo Restrepo juan Carlos ortiz Jorge Pierini Luis Otero (UNS-CIC-CCT)

The Magdalena River has the greatest length（1612 km）and drainage area（257400 km2）of any river system in Colombia,and its watershed occupies 24%of the Colombian *** river originates in the Andean Cordillera at an elevation of 3685 m and flows to its mouth in the Caribbean Sea（Bocas de Cenizas）.For this study,information on daily flow discharge（Q）,suspended sediment transport(Qsand mean suspended sediment concentration（Cs）from 1990-2010 for the Magdalena River,based on measurements at the Caiamar gauging station（the closest station to the mouth）,was provided by the Institute of Hydrology,Meteorology and Environmental Studies of Colombia（IDEAM in Spanish）.The mean annual suspended sediment load was 169±73×10～6tyr-1for the period from 1990-1999 and145±47×10～6 t yr1for the period from 2000-2010,amounting to a 14%reduction in the suspended sediment transport rate between the two *** sediment rating curve（Qs=aQb）was also evaluated for these two periods（1990-1999 and 2000-2010）.An analysis of the regression coefficients（a.b）for the two periods showed a decrease in b and an increase in a after 1999,which coincides with a decrease in suspended sediment *** change might be attributed to natural factors,including the accumulation of sediment in the Depresion Momposina and variation in hydro-climatological patterns in the Caribbean *** in effective transport were confirmed using three methods（Log-Normal and Normal distribution,and magnitude-frequency histogram）for the study period.

关键词： Suspended sediment transport Magdalena River Transport regime Effective discharge Sediment rating curve

Assessing temporal flux of plant hormones in stored processing potatoes using high definition accurate mass spectrometry

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Horticulture Research 2015年第1期2卷 293-300页

作者： Joséjuan Ordaz-ortiz Sofia Foukaraki Leon Alexander Terry Plant Science Laboratory Cranfield UniversityBedfordshireMK430ALUK

Plant hormones are important molecules which at low concentration can regulate various physiological *** spectrometry has become a powerful technique for the quantification of multiple classes of plant hormones because of its high sensitivity and *** developed a new ultrahigh pressure liquid chromatography–full-scan high-definition accurate mass spectrometry method,for simultaneous determination of abscisic acid and four metabolites phaseic acid,dihydrophaseic acid,7′-hydroxy-abscisic acid and abscisic acid glucose ester,cytokinins zeatin,zeatin riboside,gibberellins(GA1,GA3,GA4 and GA7)and indole-3-acetyl-L-aspartic *** measured the amount of plant hormones in the flesh and skin of two processing potato *** and Russet Burbank stored for up to 30 weeks at 6°C under ambient air ***,we report for the first time that abscisic acid glucose ester seems to accumulate in the skin of potato tubers throughout storage *** method achieved a lowest limit of detection of 0.22 ng g−1 of dry weight and a limit of quantification of 0.74 ng g−1 dry weight(zeatin riboside),and was able to recover,detect and quantify a total of 12 plant hormones spiked on flesh and skin of potato *** addition,the mass accuracy for all compounds(<5 ppm)was evaluated.

关键词： conditions. limit mass

Avian malaria,haematocrit,and body condition in invasive wetland passerines settled in southwestern Spain

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Avian Research 2023年第1期14卷 99-107页

作者： Jaime Muriel Luz Garcia-Longoria Sergio Magallanes juan Antonio ortiz Alfonso Marzal Instituto de Investigación en Recursos Cinegéticos(IREC) CSIC-UCLM-JCCMRonda de Toledo 1213005Ciudad RealSpain Universidad de Extremadura Facultad de BiologíaDepartamento de AnatomíaBiología Celular y Zoología Avenida de Elvas s/n06006BadajozSpain Estación Biológica de Donana(EBD-CSIC) Departamento de Ecología de los HumedalesAvda.Américo Vespucio 2641092SevillaSpain Hirundo Bird Ringing Group BadajozSpain Grupo de Investigaciones en Fauna Silvestre Universidad Nacional de San MartínJr.Maynas177722021TarapotoPeru

Avian malaria and related haemosporidian parasites can negatively impact fitness in many *** on the malaria infection and its physiological costs on their avian hosts is heavily skewed toward native passerines,with exotic species ***,introduced species may carry on and spread new pathogens to native species,and play a role on parasite transmission cycle in invaded bird communities as pathogen ***,we molecularly assess the prevalence and diversity of haemosporidian parasites in three introduced wetland passerines(the Red Avadavat Amandava amandava,the Yellow-crowned Bishop Euplectes afer,and the Common Waxbill Estrilda astrild)captured during the same season in southwestern *** also explored the relation between parasite infection,body condition,haematocrit,and uropygial gland *** detected an overall parasite prevalence of 3.55%,where Common Waxbills showed higher prevalence(6.94%)than Red Avadavats(1.51%).None Yellow-crowned Bishops were infected with *** 60%of infections were caused by Leucocytozoon,and about 40%by *** identified four unique lineages of Plasmodium and three of ***,91%of the identified host-parasite interactions represented new host records for these haemosporidian *** infection was not related to body condition,haematocrit,and uropygial gland volume of the wetland *** values varied seasonally among bird ***,haematocrit was positively related to body condition in the Yellow-crowned Bishops,but not in the other *** Avadavats had higher haematocrit levels than Yellow-crowned Bishops,whereas Common Waxbills showed the lower haematocrit *** uropygial gland volume was positively correlated with body condition in all bird *** Waxbills showed higher uropygial gland volumes related to their body size than birds from other two *** outcomes highlight the importance of e

关键词： Avian malaria Exotic species Introduced birds Leucocytozoon Plasmodium Uropygial gland

Driving the sodium-oxygen battery chemistry towards the efficient formation of discharge products: The importance of sodium superoxide quantification

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Journal of Energy Chemistry 2022年第5期31卷 709-720页

作者： Marina Enterría Marine Reynaud juan Ignacio Paredes Lidia Medinilla Reza Younesi Nagore ortiz-Vitoriano Centre for Cooperative Research on Alternative Energies(CIC energiGUNE) Basque Research and Technology Alliance(BRTA)Vitoria-Gasteiz 01510Spain Instituto de Ciencia y Tecnología del Carbono INCAR-CSICC/Francisco Pintado Fe 26Oviedo 33011Spain Ångström Advanced Battery Centre(ÅABC) Department of Chemistry-Ångström LaboratoryUppsala UniversityUppsala SE-75121Sweden Ikerbasque Basque Foundation for ScienceBilbao 48013Spain

Sodium-oxygen batteries(SOBs) have the potential to provide energy densities higher than the state-ofthe-art Li-ion batteries. However, controlling the formation of sodium superoxide(NaO_(2)) as the sole discharge product on the cathode side is crucial to achieve durable and efficient SOBs. In this work, the discharge efficiency of two graphene-based cathodes was evaluated and compared with that of a commercial gas diffusion layer. The discharge products formed at the surface of these cathodes in a glyme-based electrolyte were carefully studied using a range of characterization techniques. NaO_(2) was detected as the main discharge product regardless of the specific cathode material while small amounts of Na_(2)O_(2).2H_(2)O and carbonate-like side-products were detected by X-ray diffraction as well as by Raman and infrared spectroscopies. This work leverages the use of X-ray diffraction to determine the actual yield of NaO_(2)which is usually overlooked in this type of batteries. Thus, the proper quantification of the superoxide formed on the cathode surface is widely underestimated;even though is crucial for determining the efficiency of the battery while eliminating the parasitic chemistry in SOBs. Here, we develop an ex-situ analysis method to determine the amount of NaO_(2) generated upon discharge in SOBs by transmission X-ray diffraction and quantitative Rietveld analysis. This work unveils that the yield of NaO_(2) depends on the depth of discharge where high capacities lead to very low discharge efficiency, regardless of the used cathode. We anticipate that the methodology developed herein will provide a convenient diagnosis tool in future efforts to optimize the performance of the different cell components in SOBs.

关键词： Na-O_(2)batteries Graphene Transmission X-Ray diffraction Rietveld refinement Na-O_(2)quantification Parasitic chemistry Cathode design

The relationship between morphology and flight in Drosophila:a study of two pairs of sibling species from a natural population

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Insect Science 2024年第3期31卷 885-900页

作者： Nicolás Flaibani Victoría Estefania ortiz juan JoséFanara Valeria Paula Carreira Laboratorio de Evolucion Departamento de EcologiaGenética y Evolucion(DEGE)Facultad de Ciencias Exactas y Naturales(FCEN)Universidad de Buenos Aires(UBA)Instituto de GenéticaEcologia y Evolucion de Buenos Aires(IEGEBA)Consejo Nacional de Investigaciones Cientificasy Tecnicas(CONICET)-UBABuenos AiresArgentina

Insect flight is a complex trait involved in different behaviors,from the search for sexual partners,food,or breeding *** studies have postulated the adaptive advantages of certain morphological traits in relation to increased flight capacity,such as low values of wing loading or high values of wing:thorax ratio and wing-aspect ***,few studies have evaluated the relationship between variables related to flight and morphological traits in *** work aimed to study morphological traits in males and females of two pairs of sibling species:Drosophila buzzati Patterson and Wheeler-Drosophila koeferae Fontdevila and Wasserman,and Drosophila melanogaster Meigen-Drosophila simulans Sturtevant,and to analyze its relationship with *** detected the highest proportion of flight time in *** and *** compared to *** and ***,*** results also revealed sexual dimorphism,with males exhibiting a higher proportion of flight time than ***,we did not find a general pattern to explain the relationship between morphology and the proportion of flight time because associations varied depending upon the analyses(considering all groups together or each sex-species combination separately).Moreover,these associations explained a low percentage of variation,suggesting that other nonmorphological components related to flight,such as physiological variables,should be taken into *** work allowed us to show the variability and complexity of an aspect of flight,suggesting that the adaptive role of the morphological traits studied might have been overestimated.

关键词： morphological traits time in flight wing loading wing:thorax ratio wingaspect ratio wing second moment of area

New approach to assess sperm DNA fragmentation dynamics： Fine-tuning mathematical models

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Journal of Animal Science and Biotechnology 2017年第3期8卷 592-600页

作者： Isabel ortiz Jesus Dorado Jane Morrell Jaime Gosalvez Francisco Crespo juan M.Jimenez Manuel Hidalgo Veterinary Reproduction Group Department of Animal Medicine and Surgery Faculty of Veterinary Medicine University of Cordoba 14071 Cordoba Spain Department of Clinical Sciences Division of Reproduction Swedish University of Agricultural Sciences Box 7054 SE-75007 Uppsala Sweden Department of Biology Universidad Aut6noma de Madrid 28049 Madrid Spain Department of Reproduction Centro Militar de Cria Caballar (FESCCR-Ministry of Defense) 05005 Avila Spain Department of Chemistry and Physics of Materials University of Salzburg Hellbrunner StraBe 34/111 A-5020 Salzburg Austria

Background： Sperm DNA fragmentation（sDF） has been proved to be an important parameter in order to predict in vitro the potential fertility of a semen sample. Colloid centrifugation could be a suitable technique to select those donkey sperm more resistant to DNA fragmentation after thawing. Previous studies have shown that to elucidate the latent damage of the DNA molecule, sDF should be assessed dynamically, where the rate of fragmentation between treatments indicates how resistant the DNA is to iatrogenic damage. The rate of fragmentation is calculated using the slope of a linear regression equation. However, it has not been studied if s DF dynamics fit this model. The objectives of this study were to evaluate the effect of different after-thawing centrifugation protocols on sperm DNA fragmentation and elucidate the most accurate mathematical model（linear regression, exponential or polynomial） for DNA fragmentation over time in frozen-thawed donkey ***： After submitting post-thaw semen samples to no centrifugation（UDC）, sperm washing（SW） or single layer centrifugation（SLC） protocols, sD F values after 6 h of incubation were significantly lower in SLC samples than in SW or *** of determination（R-2） values were significantly higher for a second order polynomial model than for linear or exponential. The highest values for acceleration of fragmentation（aSDF） were obtained for SW, fol owed by SLC and ***： SLC after thawing seems to preserve longer DNA longevity in comparison to UDC and SW. Moreover,the fine-tuning of models has shown that sDF dynamics in frozen-thawed donkey semen fit a second order polynomial model, which implies that fragmentation rate is not constant and fragmentation acceleration must be taken into account to elucidate hidden damage in the DNA molecule.

关键词： Colloid centrifugation Dynamics Fine-tuning Mathematical models Sperm DNA fragmentation

Postcircumcision psoriatic balanoposthitis: anundescribed expression of Koebner’s phenomenon

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Asian Journal of Andrology 2022年第2期24卷 219-220页

作者： juan ortiz-álvarez juan Carlos Hernández-Rodríguez Julián Conejo-Mir Sánchez Román Barabash-Neila Dermatology Department Virgen del Rocio University HospitalSeville 41013Spain

Dear Editor,Although penile lesions tend to be attributed to sexually transmitted diseases in sexually active patients,there are various inflammatory skin diseases that can occur in this area.1 Among them,psoriasis is one of the most frequent,being the most common or third most common according to some studies,making it a potential reason for consulting an andrologist.2,3 It can become a disease that impacts the quality of life and sexual function.

关键词： diseases function attributed