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Metallic nanostructures for efficient LED lighting

Light(Science & Applications) 2016年第1期5卷 778-787页

作者： Gabriel Lozano Said RK rodriguez Marc A Verschuuren Jaime Gómez Rivas Instituto de Ciencia de Materiales de Sevilla Consejo Superior de Investigaciones Científicas-Universidad de Sevilla(CSIC-US)41092 SevillaSpain Laboratoire de Photonique et de Nanostructures(LPN) Centre National de la Recherche Scientifique(CNRS)91460 MarcoussisFrance Philips Research Laboratories 5656AE EindhovenThe Netherlands Dutch Institute for Fundamental Energy Research 5600 HH EindhovenThe Netherlands COBRA Research Institute Technical University of EindhovenEindhovenThe Netherlands

Light-emitting diodes(LEDs)are driving a shift toward energy-efficient ***,modifying the emission intensities,colors and directionalities of LEDs in specific ways remains a challenge often tackled by incorporating secondary optical *** nanostructures supporting plasmonic resonances are an interesting alternative to this approach due to their strong light–matter interaction,which facilitates control over light emission without requiring external secondary optical *** review discusses new methods that enhance the efficiencies of LEDs using nanostructured *** is an emerging field that incorporates physics,materials science,device technology and ***,we provide a general overview of state-of-the-art LED lighting,discussing the main characteristics required of both quantum wells and color converters to efficiently generate white ***,we discuss the main challenges in this field as well as the potential of metallic nanostructures to circumvent *** review several of the most relevant demonstrations of LEDs in combination with metallic nanostructures,which have resulted in light-emitting devices with improved *** also highlight a few recent studies in applied plasmonics that,although exploratory and eminently fundamental,may lead to new solutions in illumination.

关键词： light-emitting diodes nanophotonics plasmonics solid-state lighting

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Quasispecies structure,cornerstone of hepatitis B virus infection: Mass sequencing approach

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World Journal of Gastroenterology 2013年第41期19卷 6995-7023页

作者： Francisco rodriguez-Frias Maria Buti David Tabernero Maria Homs Network Medical Research Center Hepatic and Digestive Diseases (CIBERehd)Institute of Health Carlos Ⅲ08036 BarcelonaSpain Department of Biochemistry Vall d’Hebron HospitalAutonomous University of Barcelona08035 BarcelonaSpain Department of Hepatology Vall d’Hebron HospitalAutonomous University of Barcelona08035 BarcelonaSpain

Hepatitis B virus(HBV)is a DNA virus with complex replication,and high replication and mutation rates,leading to a heterogeneous viral *** population is comprised of genomes that are closely related,but not identical;hence,HBV is considered a viral *** variability may be somewhat limited by the high degree of overlapping between the HBV coding regions,which is especially important in the P and S gene overlapping regions,but is less significant in the X and preCore/Core *** this restriction,several clinically and pathologically relevant variants have been characterized along the viral ***-generation sequencing(NGS)approaches enable high-throughput analysis of thousands of clonally amplified regions and are powerful tools for characterizing genetic diversity in viral *** the present review,we update the information regarding HBV variability and present a summary of the various NGS approaches available for research in this *** addition,we provide an analysis of the clinical implications of HBV variants and their study by NGS.

关键词： Hepatitis B virus Next generation sequencing Quasispecies Linkage analysis Gene overlapping

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Ancient subsurface structure beneath crater Clavius:constraint by recent high-precision gravity and topography data

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Research in Astronomy and Astrophysics 2019年第1期19卷 95-102页

作者： Zhen Zhong Jian-Guo Yan J.Alexis P.rodriguez School of Physics and Electronic Science Guizhou Normal University State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan University Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing Guizhou Normal University Planetary Science Institute

With the increasing precision of the GRAIL gravity field models and topography from LOLA, it is possible to investigate the substructure beneath crater Clavius. An admittance between gravity and topography data is commonly used to estimate selenophysical parameters, including load ratio, crustal thickness and density, and elastic thickness. Not only a surface load, but also a subsurface load is considered in estimation. The algorithm of particle swarm optimization(PSO) with a swarm size of 400 is employed as *** indicate that the observed admittance is best-fitted by the modeled admittance based on a spherical shell model, which was proved to be unsatisfactory in the previous study. The best-fitted load ratio f is around-0.194. Such a small load ratio conforms to the direct proportion between the nearly uncompensated topography and its corresponding negative gravity anomaly. It also indicates that a surface load dominates all the loads. Constrained within 2σSTD, a small crustal thickness(～30 km) and a crustal density of ～2587 kg m-3are found, quite close to the results from previous GRAIL research. Considering the well constrained crustal thickness and density, the best-fitted elastic thickness(～7 km) is rational. This result is slightly smaller than the previous study(～12 km). Such difference can be attributed to the difference in crustal density used and the precision of gravity and topography data. Considering that the small difference between the modeled gravity anomaly and observations is quite small, a parameter inversed here could be an indicator of the subsurface structure beneath Clavius.

关键词： Moon planetary systems:planets and satellites:fundamental parameters planetary systems methods:data analysis

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Real-time cell analysis and heat shock protein gene expression in the TcA Tribofium castaneum cell line in response to environmental stress conditions

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Insect Science 2017年第3期24卷 358-370页

作者： Andres Garcia-Reina Maria Juliana.rodriguez-Garcia Guillermo Ramis Jose Galian Department of Zoology and Physical Anthropology University of MurciaCampus Mare Nostrum E-30100 Murcia Spain Department of Animal Production Faculty of Veterinary University of MurciaCampus Mare Nostrum E-30100 Murcia Spain

The rust red flour beetle, Tribolium castaneum （Herbst, 1797）（Coleoptera： Tenebrionidae）, is a pest of stored grain and one of the most studied insect model species. Some of the previous studies involved heat response studies in terms of survival and heat shock protein expression, which are regulated to protect other proteins against environ- mental stress conditions. In the present study, we characterize the impedance profile with the xCELLigence Real-Time Cell Analyzer and study the effect of increased temperature in cell growth and viability in the cell line BCIRL-TcA-CLG 1 （TcA） of T castaneum. This novel system measures cells behavior in real time and is applied for the first time to insect cells. Additionally, cells are exposed to heat shock, increased salinity, acidic pH and UV-A light with the aim of measuring the expression levels of lisp27, Hsp68a, and Hsp83 genes. Results show a high thermotolerance of TeA in terms of cell growth and viability. This result is likely related to gene expression results in which a significant up-regulation of all studied Hsp genes is observed after 1 h of exposure to 40 ~C and UV light. All 3 genes show similar expression patterns, but Hsp27 seems to be the most affected. The results of this study validate the RTCA method and reveal the utility of insect cell lines, real-time analysis and gene expression studies to better understand the physiological response of insect cells, with potential applications in different fields of biology such as conservation biology and pest management.

关键词： environmental stress gene expression heat shock proteins insect cells,real-time cell analysis (RTCA) red flour beetle

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Effects of maternal dietary omega-3 polyunsaturated fatty acids and methionine during late gestation on fetal growth,DNA methylation,and mRNA relative expression of genes associated with the inflammatory response,lipid metabolism and DNA methylation in placenta and offspring’s liver in sheep

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Journal of Animal Science and Biotechnology 2021年第2期12卷 611-625页

作者： Milca Rosa Velazquez Fernanda Batistel Juan Manuel Pinos rodriguez Alejandro Enrique Relling Facultad de Medicina Veterinaria y Zootecnia Universidad Veracruzana91710 VeracruzMexico Department of Animal Science Ohio Agricultural Research and Development Center(OARDC)The Ohio State University114 Gerlaugh Hall1680 Madison AveWoosterOH 44691USA Department of Animal Dairy and Veterinary SciencesUtah State UniversityLoganUT 84322USA

Background:Omega-3 PUFA or methionine(Met)supply during gestation alters offspring ***,the effect of both nutrients on fetal development has not been *** objective was to determine the effects of supplementation of these two nutrients during late gestation on fetal growth,DNA methylation,and mRNA expression of genes associated with the inflammatory response,and DNA ***(n=5/treatment)were fed from day 100 to 145 of gestation one of the following treatments:1)basal diet(NS)without fatty acids(FS)or methionine(MS)supplementation;2)FS(10 g/kg Ca salts,source omega-3 PUFA);3)MS(1 g/kg rumen protected methionine);and 4)FS and MS(FS-MS).On day 145,ewes were euthanized,and data from dams and fetus was ***(cotyledon),fetal liver,and blood samples were ***:A treatments interaction on fetal liver weight,ewe body weight and body condition score(BCS)was observed;FS-MS were heavier(P<0.01)than FS and MS,and FS-MS ewes had a better(P=0.02)BCS than *** increased(P=0.03)ewe plasma glucose *** liver global DNA methylation increased(P<0.01)in FS and *** treatments modify the mRNA relative expression on some of the genes *** the fetal liver,FS increased(P=0.04)the mRNA relative expression of arachidonate-5-lipoxygenase-activatingprotein and tended to decrease(P=0.06)***,MS decreased(P=0.04)DNA-methyltransferase-1 and tended to decrease(P=0.08)free-fatty-acid-receptor-1 mRNA relative ***,FS-MS decreased mRNA relative expression of tumor-necrosis-factor-alpha(P=0.05),peroxisomeproliferator-activated-receptor-delta(P=0.03)and gamma(P=0.04),tended to decrease(P≤0.09)interleukin-6,fatty-acid-transport-protein-1,and delta-5-desaturase,and increased adenosylhomocysteinase(P=0.04)mRNA relative *** cotyledon,FS tended to decrease fatty acid binding protein 4(P=0.09)mRNA relative ***:Omega-3 PUFA and Met s

关键词： Fat supplementation Fetal programming Maternal nutrition Nutrients Rumen protected methionine

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Processor for Measuring Radio Network Design Quality

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Wireless Engineering and Technology 2011年第3期2卷 204-211页

作者： Juan A Gomez-Pulido Silvio Priem Mendes miguel A Vega.rodriguez Paulo J Cordeiro Juan M Sanchez-Perez 不详

In this paper we present the design and prototyping of an arithmetic processor based on reconfigurable technology, whose purpose is to determine in a parallel manner the quality of the solution in a radio network design optimization problem. This problem consists in the search for an optimal set of locations in which to place radio antennas in order to obtain the maximum possible coverage, for a given terrain and antenna characteristics. The original computational contribution of this work is to use programmable logic devices to avoid the high cost of computing the evolutionary algorithms required to tackle this optimization problem. This is achieved by means of reconfigurable processors working in parallel. On the basis of the results obtained from the prototype, it may be considered a parallel architecture capable of achieving a great acceleration in the calculations.

关键词： Radio Networks Reconfigurable Computing Optimization Parallelism

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Microfluidics for interrogating live intact tissues

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Microsystems & Nanoengineering 2020年第1期6卷 538-564页

作者： Lisa F.Horowitz Adan D.rodriguez Tyler Ray Albert Folch Department of Bioengineering University of WashingtonSeattleWA 98195USA Department of Mechanical Engineering University of Hawaiʻi at MānoaHonoluluHI 96822USA

The intricate microarchitecture of tissues–the“tissue microenvironment”–is a strong determinant of tissue *** offers an invaluable tool to precisely stimulate,manipulate,and analyze the tissue microenvironment in live tissues and engineer mass transport around and into small tissue *** control is critical in clinical studies,especially where tissue samples are scarce,in analytical sensors,where testing smaller amounts of analytes results in faster,more portable sensors,and in biological experiments,where accurate control of the cellular microenvironment is *** also provides inexpensive multiplexing strategies to address the pressing need to test large quantities of drugs and reagents on a single biopsy specimen,increasing testing accuracy,relevance,and speed while reducing overall diagnostic ***,we review the use of microfluidics to study the physiology and pathophysiology of intact live tissues at sub-millimeter *** categorize uses as either in vitro studies–where a piece of an organism must be excised and introduced into the microfluidic device–or in vivo studies–where whole organisms are small enough to be introduced into microchannels or where a microfluidic device is interfaced with a live tissue surface(*** skin or inside an internal organ or tumor)that forms part of an animal larger than the *** microfluidic systems promise to deliver functional measurements obtained directly on intact tissue–such as the response of tissue to drugs or the analysis of tissue secretions–that cannot be obtained otherwise.

关键词： fluid drugs testing

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Prediction of pavement roughness using a hybrid gene expression programming-neural network technique

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Journal of Traffic and Transportation Engineering(English Edition) 2016年第5期3卷 448-455页

作者： Mehran Mazari Daniel D.rodriguez Department of Civil Engineering California State University Los Angeles Department of Civil Engineering The University of Texas at El Paso

Effective prediction of pavement performance is essential for transportation agencies to appropriately strategize maintenance, rehabilitation, and reconstruction of roads. One of the primary performance indicators is the international roughness index （IRI） which rep- resents the pavement roughness. Correlating the pavement roughness to other perfor- mance measures has been under continuous development in the past decade. However, the drawback of existing correlations is that most of them are not practical yet reliable for prediction of roughness. In this study a novel approach was developed to predict the IRI, utilizing two data sets extracted from long term pavement performance （LTPP） database. The proposed methodology included the application of a hybrid technique which combines the gene expression programming （GEP） and artificial neural network （ANN）. The developed algorithm showed reasonable performance for prediction of IRI using traffic parameters and structural properties of pavement. Furthermore, estimation of present IRI from his- torical data was evaluated through another set of LTPP data. The second prediction model also depicted a reasonable performance power. Further extension of the proposed models including different pavement types, traffic and environmental conditions would be desir- ab]e in future studies.

关键词： International roughness index PavementGene expression programming Artificial neural network Long term pavement performance

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Modelling of tropospheric delays in geosynchronous synthetic aperture radar

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Science China(Information Sciences) 2017年第6期60卷 85-102页

作者： Dexin LI Marc rodriguez-CASSOLA Pau PRATS-IRAOLA Zhen DONG Manqing WU Alberto MOREIRA School of Electronic Science and Engineering National University of Defense Technology (NUDT) Department of Electrical and Computer Engineering Technical University of Munich (TUM) German Aerospace Center (DLR)

As a direct consequence of the orbital height, the integration time in geosynchronous synthetic aperture radar(GEO SAR) with metric or decimetric azimuth resolutions is in the order of several hundreds or even thousands of seconds. With such long integration time, the compensation of residual tropospheric propagation terms poses one of the fundamental challenges associated with GEO SAR missions. In order to better characterise the impact of the propagation errors on GEO SAR imaging, we put forward a model for the simulation of the tropospheric delay appropriate for the accurate simulation of GEO SAR surveys. The suggested model, with a deterministic background component and a random turbulent one, incorporates some of the most recent meteorological data for the characterization of the troposphere. To illustrate the relevance of the derivation, the suggested model is used for performance estimation and raw data simulation of GEO SAR raw data. Substantial conclusion on the system impulse response and the associated calibration requirements is also drawn from the analysis.

关键词： geosynchronous SAR missions propagation errors tropospheric hydrostatic delay topospheric wet delay Kolmogorov power law Matérn covariances raw data simulation reverse backprojection

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Contamination of Water for Domestic Use and Human Consumption by Heavy Metals Derived from Mining Activity in Parral, Chihuahua, Mexico

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Journal of Environmental Science and Engineering(A) 2012年第3期1卷 286-294页

作者： Luis miguel rodriguez Ever Torres Luis Saenz Maria del Carmen Avitia Guillermo rodriguez Eduardo Herrera Carmen Julia Navarro Guillermo Gonzalez Luis Lozoya Damaris Acosta Technological Institute of Parral Parral Chihuahua 33850 Mexico Research Center for Advanced Materials （CIMA V） Chihuahua 31109 Mexico

Research was done with the objective of evaluating the quality of water supplied to the potable water system in Hidalgo Del Parral, which comes from two main supply sources： wells from ＂Valle del Verano＂, which provide water to the east side of the city, and the Water Treatment Plant, which receives water from different mines and supplies the west side of the city. When this plant is overcome on its capacity of treatment, a part of the water from the mines is fed directly to the northwest part of the city. The metals lead （Pb）, chromium （Cr）, cadmium （Cd）, zinc （Zn）, and arsenic （As） were analyzed by atomic absorption （AA） technique, based on the United States Environmental Protection Agency （EPA） Method 7000B （Revision 2, February 2007）. The digestion process was done according to the guidelines established in Method NMX-AA-051-SCFI-2001, Analysis of Water-Determination of Metals by Atomic Absorption, developed by the National Standardization Technical Committee for Environmental Protection （Mexico）. The samples were collected from the following points： 13 wells and 2 re-pumping stations of ＂Valle del Verano＂, the inlet and outlet of the Water Treatment Plant, and domestic faucets. The east side of the city, supplied by the wells of ＂Valle del Verano＂, is metal-pollution free. The water that comes from the mines contains high concentrations of As, Zn, Cd and Pb, with levels that can get to 0.12, 32.6, 0.26 and 3.5 mg/L, respectively. This water pollution generated by mining can be concluded from the high levels found in the domestic samples in which, for several points, the concentrations exceed the parameters set by the current guideline. According to the results, it is vital to set a plan of remediation for the water that comes from the mines, because there is a great risk for health in the consumotion of this water.

关键词： Heavy metals mining water contamination.

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