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Journal articles on the topic 'Lyra'

Author: Grafiati

Published: 4 June 2021

Last updated: 5 March 2023

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1

Gründling, Angelika, Dominique M. Missiakas, and Olaf Schneewind. "Staphylococcus aureus Mutants with Increased Lysostaphin Resistance." Journal of Bacteriology 188, no. 17 (September 1, 2006): 6286–97. http://dx.doi.org/10.1128/jb.00457-06.

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ABSTRACT Staphylococcus simulans secretes lysostaphin, a bacteriolytic enzyme that specifically binds to the cell wall envelope of Staphylococcus aureus and cleaves the pentaglycine cross bridges of peptidoglycan, thereby killing staphylococci. The study of S. aureus mutants with resistance to lysostaphin-mediated killing has revealed biosynthetic pathways for cell wall assembly. To identify additional genes involved in cell wall envelope biosynthesis, we have screened a collection of S. aureus strain Newman transposon mutants for lysostaphin resistance. Bursa aurealis insertion in SAV2335, encoding a polytopic membrane protein with predicted protease domain, caused a high degree of lysostaphin resistance, similar to the case for a previously described femAB promoter mutant. In contrast to the case for this femAB mutant, transposon insertion in SAV2335, herein named lyrA (lysostaphin resistance A), did not cause gross alterations of cell wall cross bridges such as truncations of pentaglycine to tri- or monoglycine. Also, inactivation of LyrA in a methicillin-resistant S. aureus strain did not precipitate a decrease in β-lactam resistance as observed for fem (factor essential for methicillin resistance) mutants. Lysostaphin bound to the cell wall envelopes of lyrA mutants in a manner similar to that for wild-type staphylococci. Lysostaphin resistance of lyrA mutants is attributable to altered cell wall envelope properties and may in part be due to increased abundance of altered cross bridges. Other lyr mutants with intermediate lysostaphin resistance carried bursa aurealis insertions in genes specifying GTP pyrophosphokinase or enzymes of the purine biosynthetic pathway.

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2

Jahromi, A. Sayahian, and H. Moradpour. "Static traversable wormholes in Lyra manifold." International Journal of Modern Physics D 27, no. 03 (February 2018): 1850024. http://dx.doi.org/10.1142/s0218271818500244.

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At first, considering the Einstein framework, we introduce some new static traversable wormholes and study the effects of a dark energy-like source on them. Thereinafter, a brief review on Einstein field equations in Lyra manifold is presented, and we address some static traversable wormholes in the Lyra manifold which satisfy the energy conditions. It is also shown that solutions introduced in the Einstein framework may also meet the energy conditions in the Lyra manifold. Finally, we focus on vacuum Lyra manifold and find some traversable asymptotically flat wormholes. In summary, our study shows that it is theoretically possible to find a Lyra displacement vector field in a manner in which traversable wormholes satisfy the energy conditions in a Lyra manifold.

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3

Nolo, Riitta, Lois A. Abbott, and Hugo J. Bellen. "Drosophila Lyra Mutations Are Gain-of-Function Mutations of senseless." Genetics 157, no. 1 (January 1, 2001): 307–15. http://dx.doi.org/10.1093/genetics/157.1.307.

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Abstract The Lyra mutation was first described by Jerry Coyne in 1935. Lyra causes recessive pupal lethality and adult heterozygous Lyra mutants exhibit a dominant loss of the anterior and posterior wing margins. Unlike many mutations that cause loss of wing tissue (e.g., scalloped, Beadex, cut, and apterous-Xasta), Lyra wing discs do not exhibit increased necrotic or apoptotic cell death, nor do they show altered BrdU incorporation. However, during wing disc eversion, loss of the anterior and posterior wing margins is apparent. We have previously shown that senseless, a gene that is necessary and sufficient for peripheral nervous system (PNS) development, is allelic to Lyra. Here we show by several genetic criteria that Lyra alleles are neomorphic alleles of senseless that cause ectopic expression of SENSELESS in the wing pouch. Similarly, overexpression of SENSELESS in the wing disc causes loss of wing margin tissue, thereby mimicking the Lyra phenotype. Lyra mutants display aberrant expression of DELTA, VESTIGIAL, WINGLESS, and CUT. As in Lyra mutants, overexpression of SENSELESS in some areas of the wing pouch also leads to loss of WINGLESS and CUT. In summary, our data indicate that overexpression of SENSELESS causes a severe reduction in NOTCH signaling that in turn may lead to decreased transcription of several key genes required for wing development, leading to a failure in cell proliferation and loss of wing margin tissue.

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4

Gandola, M., F. Mele, M. Grassi, P. Malcovati, and G. Bertuccio. "Multi-chip front-end electronics LYRA for X and γ Ray detector for HERMES mission." Journal of Instrumentation 16, no. 12 (December 1, 2021): T12013. http://dx.doi.org/10.1088/1748-0221/16/12/t12013.

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Abstract We present the experimental results of the Application Specific Integrated Circuit (ASIC), called LYRA, specifically designed for the High-Energy Rapid Modular Ensemble of Satellites (HERMES) mission concept, a constellation of nano-satellites able to detect and localize high-energy rapid transient events (up to 2.2 MeV) as the Gamma Ray Bursts (GRBs) from the deep space. LYRA has been desied for the detection system composed by a combination of Gadolinium Aluminum Gallium Garnet (GAGG) scintillators for high-energy photons, coupled to a matrix of 120 silicon drift detectors (SDD), used for detecting both scintillation light and low-energy photons. The LYRA ASIC has been conceived with a multi-chip architecture: 120 LYRA Front-End chips (LYRA-FE) are placed in close proximity to the anodes of the SDD matrix for a first processing of the detector signals and trasmit them in current mode to four 32-channel LYRA Back-End chips (LYRA-BE) to complete the elaboration. The requirements that the LYRA ASIC have to fulfill for the HERMES project are challenging: the maximum input energy measured in Silicon must reach 120 keV — corresponding to 2.2 MeV on GAGG — with a linearity error below 1%, the electronic noise must be less then 30 el. r.m.s. and the power consumption less then 1 mW per channel in a system with 120 channels working in parallel. The characterization of LYRA has been carried out on a dedicated test board, coupling one channel of the ASIC with a 25 mm2 SDD. An input full scale range of 5.2 fC and an electronic noise of 22 el. r.m.s. have been measured at -33∘C with a power consumption of 745 µW per channel.

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5

Laibinis, Linas, Elena Troubitsyna, and Sari Leppänen. "Service-Oriented Development of Fault Tolerant Communicating Systems." International Journal of Embedded and Real-Time Communication Systems 1, no. 2 (April 2010): 61–85. http://dx.doi.org/10.4018/jertcs.2010040104.

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Telecommunication systems must have a high degree of availability, that is, a high probability of correct and timely provision of requested services. To achieve this, correctness of software for such systems should be ensured. Application of formal methods helps increase confidence in building correct software. However, to be used in practice, formal methods should be well integrated into existing development process. In this paper, the authors propose a formal model-driven approach to development of communicating systems. The authors formalize and extend the Lyra approach—a top-down service-oriented method for development of communicating systems. Lyra is based on transformation and decomposition of models expressed in UML2. The authors formalize Lyra in the B Method by proposing a set of formal specification and refinement patterns reflecting the essential models and transformations of the Lyra phases. Moreover, this paper extends Lyra to integrate reasoning about fault tolerance in the entire development flow.

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6

Bhowmik, B. B., and A. Rajput. "Anisotropic Lyra cosmology." Pramana 62, no. 6 (June 2004): 1187–99. http://dx.doi.org/10.1007/bf02704434.

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7

Kumara, S. T., R. Kariyappa, M. Dominique, D. Berghmans, L. Damé, J. F. Hochedez, V. H. Doddamani, and Lakshmi Pradeep Chitta. "Preliminary Results on Irradiance Measurements from Lyra and Swap." Advances in Astronomy 2012 (2012): 1–5. http://dx.doi.org/10.1155/2012/623709.

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The first and preliminary results of the photometry of Large Yield Radiometer (LYRA) and Sun Watcher using Active Pixel system detector and Image Processing (SWAP) onboard PROBA2 are presented in this paper. To study the day-to-day variations of LYRA irradiance, we have compared the LYRA irradiance values (observed Sun as a star) measured in Aluminum filter channel (171 Å–500 Å) with spatially resolved full-disk integrated intensity values measured with SWAP (174 Å) and Ca II K 1 Å index values (ground-based observations from NSO/Sac Peak) for the period from 01 April 2010 to 15 Mar 2011. We found that there is a good correlation between these parameters. This indicates that the spatial resolution of SWAP complements the high temporal resolution of LYRA. Hence SWAP can be considered as an additional radiometric channel. Also the K emission index is the integrated intensity (or flux) over a 1 Å band centered on the K line and is proportional to the total emission from the chromosphere; this comparison clearly explains that the LYRA irradiance variations are due to the various magnetic features, which are contributing significantly. In addition to this we have made an attempt to segregate coronal features from full-disk SWAP images. This will help to understand and determine the actual contribution of the individual coronal feature to LYRA irradiance variations.

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8

Boyanton, Bobby L., Elizabeth M. Darnell, Anne E. Prada, Dana M. Hansz, and Barbara Robinson-Dunn. "Evaluation of the Lyra Direct Strep Assay To Detect Group A Streptococcus and Group C and G Beta-Hemolytic Streptococcus from Pharyngeal Specimens: TABLE 1." Journal of Clinical Microbiology 54, no. 1 (October 21, 2015): 175–77. http://dx.doi.org/10.1128/jcm.02405-15.

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The Lyra Direct strep assay was compared to culture for its ability to detectStreptococcusgroup A and β-hemolytic groups C/G using rapid antigen-negative pharyngeal specimens (n= 161). The Lyra assay correctly detected all β-hemolytic streptococci (group A,n= 19; group C/G,n= 5). In batch mode, the Lyra assay reduced intralaboratory turnaround time by 60% (18.1 h versus 45.0 h) but increased hands-on time by 96% (3 min 16 s versus 1 min 40 s per specimen).

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9

Yalim, Mehmet Sarp, and Stefaan Poedts. "Variations in EUV Irradiance: Comparison between LYRA, ESP, and SWAP Integrated Flux." Advances in Astronomy 2014 (2014): 1–13. http://dx.doi.org/10.1155/2014/957461.

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The Sun Watcher Using Active Pixel System Detector and Image Processing (SWAP) telescope and Large Yield Radiometer (LYRA) are the two Sun observation instruments on-board PROBA2. SWAP extreme ultraviolet images, if presented in terms of the integrated flux over solar disk, in general, correlate well with LYRA channel 2–4 (zirconium filter) and channels QD and 18 of EVE/ESP on-board SDO between 2010 and 2013. Hence, SWAP can be considered as an additional radiometric channel. We compare in detail LYRA channel 2–4 and SWAP integrated flux in July 2010 and in particular during the solar eclipse that occurred on July 11, 2010. During this eclipse, the discrepancy between the two data channels can be explained to be related to the occultation of active region 11087 by the Moon. In the second half of July 2010, LYRA channel 2–4 and SWAP integrated flux deviate from each other, but these differences can also be explained in terms of features appearing on the solar disk such as coronal holes and active regions. By additionally comparing with timeline of EVE/ESP, we can preliminarily interpret these differences in terms of the difference between the broad bandpass of LYRA channel 2–4 and the, relatively speaking, narrower bandpass of SWAP.

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10

Young, Stephen, Stephanie N. Taylor, Catherine L. Cammarata, Katey G. Varnado, Celine Roger-Dalbert, Amanda Montano, Christen Griego-Fullbright, et al. "Clinical Evaluation of BD Veritor SARS-CoV-2 Point-of-Care Test Performance Compared to PCR-Based Testing and versus the Sofia 2 SARS Antigen Point-of-Care Test." Journal of Clinical Microbiology 59, no. 1 (October 6, 2020): e02338-20. http://dx.doi.org/10.1128/jcm.02338-20.

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ABSTRACTThe clinical performance of the BD Veritor System for Rapid Detection of SARS-CoV-2 nucleocapsid antigen (Veritor), a chromatographic immunoassay used for SARS-CoV-2 point-of-care testing, was evaluated using nasal specimens from individuals with COVID-19 symptoms. Two studies were completed to determine clinical performance. In the first study, nasal specimens and either nasopharyngeal or oropharyngeal specimens from 251 participants with COVID-19 symptoms (≤7 days from symptom onset [DSO], ≥18 years of age) were utilized to compare Veritor with the Lyra SARS-CoV-2 PCR assay (Lyra). In the second study, nasal specimens from 361 participants with COVID-19 symptoms (≤5 DSO, ≥18 years of age) were utilized to compare performance of Veritor to that of the Sofia 2 SARS Antigen FIA test (Sofia 2). The positive, negative, and overall percent agreement (PPA, NPA, and OPA, respectively) were the primary outcomes. In study 1, the PPA for Veritor, compared to Lyra, ranged from 81.8 to 87.5% across the 0 to 1 and 0 to 6 DSO ranges. In study 2, Veritor had PPA, NPA, and OPA values of 97.4, 98.1, and 98.1%, respectively, with Sofia 2. Discordant analysis showed one Lyra positive missed by Veritor and five Lyra positives missed by Sofia 2; one Veritor positive result was negative by Lyra. Veritor met FDA emergency use authorization (EUA) acceptance criteria for SARS-CoV-2 antigen testing for the 0 to 5 and 0 to 6 DSO ranges (PPA values of 83.9% and 82.4%, respectively). Veritor and Sofia 2 showed a high degree of agreement for SARS-CoV-2 detection. The Veritor test allows for more rapid COVID-19 testing utilizing easy-to-collect nasal swabs but demonstrated <100% PPA compared to PCR.

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11

Johnson, Jane Troy, John Jenkins, and Frank Traficante. "The Lyra Viol Consorts." Notes 50, no. 2 (December 1993): 743. http://dx.doi.org/10.2307/898514.

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12

Freeman-Attwood, Jonathan, Jenkins, and Frank Traficante. "The Lyra Viol Concerts." Musical Times 134, no. 1803 (May 1993): 262. http://dx.doi.org/10.2307/1002440.

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13

Wauters, L., M. Dominique, and I. E. Dammasch. "LYRA Mid-Term Periodicities." Solar Physics 291, no. 7 (August 2016): 2135–44. http://dx.doi.org/10.1007/s11207-016-0960-8.

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14

Oliveira, Jaqueline Pereira Machado de, Walkyria Bueno Scivittaro, Rosa Maria Vargas Castilhos, and Luís Carlos Iunes Oliveira Filho. "Adubação fosfatada para cultivares de mamoneira no Rio Grande do Sul." Ciência Rural 40, no. 8 (August 2010): 1835–39. http://dx.doi.org/10.1590/s0103-84782010000800027.

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O estudo foi realizado na safra agrícola 2007/08, em um Planossolo Háplico, em Pelotas, Rio Grande do Sul (RS). Os tratamentos compreenderam as cultivares de mamoneira 'AL Guarany 2002' e 'Lyra', com cinco doses de P (0; 30; 60; 90 e 120kg ha-1 de P2O5), sendo dispostas em delineamento blocos ao acaso, em esquema fatorial, com três repetições. Avaliaram-se o estado nutricional e o desempenho produtivo da cultura. A adubação fosfatada alterou os teores foliares de N, Ca, B e Fe da mamoneira; para boro, o efeito restringiu-se à 'Lyra'. A cultivar 'AL Guarany 2002' mostrou-se mais exigente em fósforo que a 'Lyra'. A adubação fosfatada elevou a produtividade de grãos de ambas as cultivares de mamoneira. Esta aumentou com o uso de até 156kg ha-1 de P2O5, para a 'AL Guarany 2002', e de até 90kg ha-1 de P2O5, para a 'Lyra', e as doses de máxima eficiência econômica para essas cultivares foram, respectivamente, de 134kg ha-1 e 78kg ha-1 de P2O5.

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15

Alofi, A. S., and Ragab M. Gad. "Homothetic vector fields in a specially homogenous Bianchi type-I cosmological model in Lyra geometry." Canadian Journal of Physics 93, no. 11 (November 2015): 1397–401. http://dx.doi.org/10.1139/cjp-2014-0555.

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In this paper, homothetic vector fields of a spatially homogenous Bianchi type-I cosmological model have been evaluated based on Lyra geometry. Further, we investigate the equation of state in cases when a displacement vector [Formula: see text] is a function of t and when it is constant. We give a comparison between the obtained results, using Lyra geometry, and those obtained previously in the context of general relativity, based on Riemannian geometry.

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16

Brahma, Bishnu Prasad, and Mukunda Dewri. "Bianchi type-V Dark Energy Modified f(R,T) Gravity Model in the Presence of Massive Scalar Field in Lyra Geometry." Trends in Sciences 19, no. 21 (October 31, 2022): 293. http://dx.doi.org/10.48048/tis.2022.293.

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Here, we investigate Bianchi type-V modified f(R,T) gravity cosmological models in Lyra geometry. To acquire the deterministic solution of the field equations with f(R,T) gravity based on Lyra geometry, we consider f(R,T)= f_1 (R)+f_2 (T), R indicates Ricci Scalar, T indicates trace of the energy momentum tensor in Lagrangian matter. Presence of Massive scalar field and Displacement vector of Lyra played an important role. The physical as well as the geometrical nature of the f(R,T) model is also discussed. HIGHLIGHTS In this present model of universe, we obtained that the universe starts with zero volume As in present observational data like CMB, BAO, La Supernona, our model is accelerating It is observed that the scalar field and kinetic energy both are non singular CDM is not satisfied in this model of universe GRAPHICAL ABSTRACT

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17

Gad, Ragab M., and A. S. Alofi. "Homothetic vector field in plane symmetric Bianchi type-I cosmological model in Lyra geometry." Modern Physics Letters A 29, no. 22 (July 16, 2014): 1450116. http://dx.doi.org/10.1142/s0217732314501168.

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In this paper, we obtain a homothetic vector field of a plane symmetric Bianchi type-I spacetime based on Lyra geometry. We discuss the cases when the displacement vector is function of t and when it is constant. We investigate the equation of state in both two cases. A comparison between the obtained results, using Lyra geometry, and that have obtained previously in the context of General Relativity (GR), based on Riemannian geometry, will be given.

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18

Aragón-Vargas, Luis Fernando. "¿PLAGIÓ DISNEY A CARMEN LYRA?" Pensar en Movimiento: Revista de Ciencias del Ejercicio y la Salud 14, no. 1 (May 24, 2016): 1–2. http://dx.doi.org/10.15517/pensarmov.v14i1.24480.

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19

RAHAMAN, F. "GLOBAL MONOPOLES IN LYRA GEOMETRY." International Journal of Modern Physics D 09, no. 06 (December 2000): 775–79. http://dx.doi.org/10.1142/s0218271800000645.

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We present the solutions for the metric outside a monopole resulting from the breaking of a global 0(3) symmetry within the framework of Lyra geometry. We have shown that monopole exerts gravitational force on matter around it.

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RAHAMAN, FAROOK. "GLOBAL STRING IN LYRA GEOMETRY." International Journal of Modern Physics D 10, no. 04 (August 2001): 579–83. http://dx.doi.org/10.1142/s0218271801000913.

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We present an approximate solution of the Einstein equations for the metric of a global string based on Lyra's geometry. The geodesic of a test particle is studied due to the gravitational field of the string. Finally, the angle of deficit has been calculated for the string solution.

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RAHAMAN, FAROOK, SUBENOY CHAKRABORTY, and MEHEDI KALAM. "DOMAIN WALL IN LYRA GEOMETRY." International Journal of Modern Physics D 10, no. 05 (October 2001): 735–39. http://dx.doi.org/10.1142/s0218271801001256.

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In this paper we have evaluated solutions for domain wall in Lyra geometry. Solutions are obtained with separable form for the metric coefficients. Finally acceleration due to the domain wall has been analised by studying geodesic equation.

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de Moura, Francisco A. B. F., and Marcelo L. Lyra. "de Moura and Lyra Reply:." Physical Review Letters 84, no. 1 (January 3, 2000): 199. http://dx.doi.org/10.1103/physrevlett.84.199.

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23

Eisenbeiss, T., M. Ammler-von Eiff, T. Roell, M. Mugrauer, Ch Adam, R. Neuhäuser, T. O. B. Schmidt, and A. Bedalov. "The Hercules-Lyra association revisited." Astronomy & Astrophysics 556 (July 24, 2013): A53. http://dx.doi.org/10.1051/0004-6361/201118362.

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Casana, R., C. A. M. de Melo, and B. M. Pimentel. "Spinorial Field and Lyra Geometry." Astrophysics and Space Science 305, no. 2 (August 16, 2006): 125–32. http://dx.doi.org/10.1007/s10509-006-9048-5.

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Matenaer, James M. "Lyra in Light of Condemnation." Franciscan Studies 65, no. 1 (2007): 349–69. http://dx.doi.org/10.1353/frc.2007.0010.

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Rahaman, F., and R. Mukherji. "Domain walls in Lyra geometry." Astrophysics and Space Science 288, no. 4 (2003): 493–501. http://dx.doi.org/10.1023/b:astr.0000005095.28348.69.

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Catalin, Gherghe. "QUASI-CONNEXION DE GOLAB-LYRA." Demonstratio Mathematica 30, no. 1 (January 1, 1997): 1–6. http://dx.doi.org/10.1515/dema-1997-0102.

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28

Matyjasek, Jerzy, and Marek Rogatko. "Cosmic strings in Lyra geometry." Astrophysics and Space Science 192, no. 2 (1992): 299–308. http://dx.doi.org/10.1007/bf00684487.

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Singh, Kangujam Priyokumar, and Mahbubur Rahman Mollah. "Bianchi type III cosmological model with hybrid scale factor in the presence of Van der Waals fluid in Lyra manifold." International Journal of Modern Physics A 33, no. 35 (December 20, 2018): 1850207. http://dx.doi.org/10.1142/s0217751x1850207x.

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The search for the existence of Lyra manifold in a hybrid universe interacting with Van der Waals fluid using Bianchi type III metric is presented in this paper. To find the exact cosmological solutions, we use certain physical relations between the metric potentials and the average scale factor is assumed to be [Formula: see text] (see Ref. 1) describing the hybrid character of scale factor with the generation of a model of transitioning phase from early decelerating to the present accelerating universe. In this model, when we investigate further about the role of the Van der Waals fluid with Lyra geometry, interestingly, we found that this universe behaves as one containing with dark energy and at the late stage a part of the dark energy behaves as phantom type. This part being generated by the Lyra manifold itself may be taken as a source of dark energy. Some physical as well as geometrical aspects of the model universe are also presented.

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Mohanty, G., G. C. Samanta, and K. L. Mahanta. "Kaluza-Klein FRW cosmological models in Lyra manifold." Theoretical and Applied Mechanics 36, no. 2 (2009): 157–66. http://dx.doi.org/10.2298/tam0902157m.

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We have constructed five dimensional FRW cosmological models for k=-1,1,0 in Lyra manifold with time dependent displacement field. The matter field is considered in the form of a perfect fluid with isotropic matter pressure. It is found that the model for k=-1 is inflationary. For k=1, the model is inflationary for set of values of arbitrary constant n and decelerates in the standard way for another set of values of n. Moreover the concept of Lyra manifold does not exist at infinite time.

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Brahma, B. P., and M. Dewri. "Role of <i>f</i>(<i>R,T</i>) Gravity in Bianchi Type-V Dark Energy Model with Electromagnetic Field based on Lyra Geometry." Journal of Scientific Research 14, no. 3 (September 1, 2022): 721–33. http://dx.doi.org/10.3329/jsr.v14i3.56416.

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In this paper, a Bianchi type V Dark energy cosmological model scenario is studied with the electromagnetic field in Lyra based on f(R,T) gravity. The source of the magnetic field is along the x axis. Field equations found in Lyra geometry with electromagnetic field (F23 ≠ 0) in f(R,T) gravity, by choosing f(R~,T) = f1(R~) + f2(T) with f1(R~) + μR~ and f2(T) = μT. A hybrid scale factor discusses the physical and dynamical aspects of f(R,T) gravity.

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Rojas González, Margarita. "Las Aventuras de Tío Conejo en libros y revistas costarricenses de la primera mitad del siglo XX." Revista de Filología y Lingüística de la Universidad de Costa Rica 31 (May 27, 2004): 105. http://dx.doi.org/10.15517/rfl.v31i0.4401.

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Carmen Lyra publica Los cuentos de mi tía Panchita en 1920; en las sucesivas ediciones incluye más cuentos de tío Conejo, algunos de los cuales habían aparecido en revistas literarias anteriormente. En 1922, María Leal publica Cuentos viejos, que también incluye cuentos del mismo personaje, mezclados con otros del folclore universal. En revistas literarias posteriores, hasta la década de 1950, siguen apareciendo cuentos de tío Conejo, con estilo y aventuras muy parecidos a los publicados por Carmen Lyra, algunos de los cuales aparecen de forma anónima.

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García-Rey, María Del Rocío. "Transculturación narrativa en los Cuentos de Carmen Lyra." Temas de Nuestra América. Revista de Estudios Latinoaméricanos 32, no. 60 (December 9, 2016): 19. http://dx.doi.org/10.15359/tdna.32-60.1.

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Este artículo toma como eje algunos cuentos infantiles de Carmen Lyra, escritora costarricense, autora de Cuentos de mi tía Panchita (1922). Para exponer mis planteamientos extrapolaré algunos puntos presentados por Ángel Rama en su emblemático libro: Transculturación narrativa en América Latina. Consciente estoy de que la investigación de Rama no se trata de una obra en la que sea abordada la literatura infantil, sin embargo propongo que presenta elementos valiosos para explicar el juego cultural en el que se ve inmersa la reescritura y «traducción» de los cuentos de Lyra.

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Dutra, Deo Campos, and José Ribas Vieira. "Entrevista com a Professora Ana Lúcia de Lyra Tavares." Teoria Jurídica Contemporânea 2, no. 2 (June 12, 2018): 239. http://dx.doi.org/10.21875/tjc.v2i2.14969.

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<p> </p><p><strong>RESUMO: </strong>Entrevista com a Professora Ana Lúcia de Lyra Tavares, professora assistente da Pontifícia Universidade Católica do Rio de Janeiro, Rio de Janeiro, RJ, Brasil</p><p> </p><p><strong>ABSTRACT: </strong>Interview with Ana Lúcia de Lyra Tavares, assistant professor at Pontifícia Universidade Católica do Rio de Janeiro, Rio de Janeiro, RJ, Brasil</p><div> </div>

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Moradpour, H., N. Sadeghnezhad, S. Ghaffari, and A. Jahan. "Thermodynamic Analysis of Gravitational Field Equations in Lyra Manifold." Advances in High Energy Physics 2017 (2017): 1–6. http://dx.doi.org/10.1155/2017/9687976.

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Considering the Einstein field equations in Lyra manifold and applying the unified first law of thermodynamics as well as the Clausius relation to the apparent horizon of FRW universe, we find the entropy of apparent horizon in Lyra manifold. In addition, the validity of second law of thermodynamics and its generalized form are also studied. Finally, we use the first law of thermodynamics in order to find the horizon entropy of static spherically symmetric spacetimes. Some results of considering (anti)de-Sitter and Schwarzschild metrics have also been addressed.

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Darabi, F., Y. Heydarzade, and F. Hajkarim. "Stability of Einstein static universe over Lyra geometry." Canadian Journal of Physics 93, no. 12 (December 2015): 1566–70. http://dx.doi.org/10.1139/cjp-2015-0312.

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The existence and stability conditions of Einstein static universe against homogeneous scalar perturbations in the context of Lyra geometry is investigated. The stability condition is obtained in terms of the constant equation of state parameter ω = p/ρ depending on energy density ρ0 and scale factor a0 of the initial Einstein static universe. Also, the stability against vector and tensor perturbations is studied. It is shown that a stable Einstein static universe can be found in the context of Lyra geometry against scalar, vector, and tensor perturbations for suitable range and values of physical parameters.

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Musse, Ricardo. "Bolsonarismo." Revista Cronos 20, no. 2 (August 10, 2021): 144–47. http://dx.doi.org/10.21680/1982-5560.2019v20n2id26254.

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38

Egorova, T., E. Rozanov, J. F. Hochedez, and W. Schmutz. "Reconstruction of the solar spectral UV irradiance for nowcasting of the middle atmosphere state on the basis of LYRA measurements." Atmospheric Chemistry and Physics Discussions 8, no. 1 (February 28, 2008): 4099–116. http://dx.doi.org/10.5194/acpd-8-4099-2008.

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Abstract. The LYRA instrument onboard ESA PROBA2 satellite will provide 6-hourly solar irradiance at the Lyman-alpha (121.6 nm) and the Herzberg continuum (~200–220 nm wavelength range). Because the nowcasting of the neutral and ionic state of the middle atmosphere requires the solar irradiance for the wide spectral area (120–680 nm) we have developed the statistical tool for the reconstruction of the full spectrum from the LYRA measurements. The accuracy of the reconstructed irradiance has been evaluated with 1-D transient radiative-convective model with neutral and ion chemistry using the daily solar spectral irradiance measured with SUSIM and SOLSTICE instruments onboard UARS satellite. We compared the results of transient 1-yr long model simulations for 2000 driven by the observed and reconstructed solar irradiance and showed that the reconstruction of the full spectrum using linear regression equation based on the solar irradiance in two LYRA channels can be successfully used for nowcasting of the middle atmosphere. We have also defined some conditions when the proposed approach does not provide reasonable accuracy.

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Egorova, T., E. Rozanov, J. F. Hochedez, and W. Schmutz. "Reconstruction of the solar spectral UV irradiance for nowcasting of the middle atmosphere state on the basis of LYRA measurements." Atmospheric Chemistry and Physics 8, no. 11 (June 12, 2008): 2965–73. http://dx.doi.org/10.5194/acp-8-2965-2008.

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Abstract. The LYRA instrument onboard ESA PROBA2 satellite will provide 6-hourly solar irradiance at the Lyman-alpha (121.6 nm) and the Herzberg continuum (~200–220 nm wavelength range). Because the nowcasting of the neutral and ionic state of the middle atmosphere requires the solar irradiance for the wide spectral range (120–680 nm) we have developed the statistical tool for the reconstruction of the full spectrum from the LYRA measurements. The accuracy of the reconstructed irradiance has been evaluated with 1-D transient radiative-convective model with neutral and ion chemistry using the daily solar spectral irradiance measured with SUSIM and SOLSTICE instruments onboard UARS satellite. We compared the results of transient 1-year long model simulations for 2000 driven by the observed and reconstructed solar irradiance and showed that the reconstruction of the full spectrum using linear regression equation based on the solar irradiance in two LYRA channels can be successfully used for nowcasting of the middle atmosphere. We have also identified conditions when the proposed approach does not yield spectral reconstruction with sufficient accuracy.

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Zhi, Haizhao. "Behavior of a vacuum and naked singularity under a smooth gauge function in Lyra geometry." Canadian Journal of Physics 96, no. 9 (September 2018): 969–77. http://dx.doi.org/10.1139/cjp-2017-0681.

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Lyra geometry is a conformal geometry that originated from Weyl geometry. In this article, we derive the exterior field equation under a spherically symmetric gauge function x0(r) and metric in Lyra geometry. When we impose a specific form of the gauge function x0(r), the radial differential equation of the metric component g00 will possess an irregular singular point (ISP) at r = 0. Moreover, we can apply the method of dominant balance to get the asymptotic behavior of the new space–time solution. The significance of this work is that we can use a series of smooth gauge functions x0(r) to modulate the degree of divergence of the singularity at r = 0, which will become a naked singularity under certain conditions. Furthermore, we investigate the physical meaning of this novel behavior of space–time in Lyra geometry and find out that no spaceship with finite integrated acceleration can arrive at this singularity at r = 0. The physical meaning of the gauge function and integrability is also discussed.

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Spera, Guido, Giovanni Cargnello, Simonetta Moretti, Girogio Casadei, Stefano Scaggiante, and Gabriele Anelli. "Influence of foliage management on lyra for «high quality» wines production for Cabernet-Sauvignon variety: enological aspects (I note)." OENO One 38, no. 1 (March 31, 2004): 65. http://dx.doi.org/10.20870/oeno-one.2004.38.1.939.

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<p style="text-align: justify;">Cabernet-Sauvignon is an important red berry cultivar, which provides in Latium good quality results even if grown using training systems and planting models which are notably different among themselves . To give a concrete contribution to the qualitative improvement of « Cabernet-Sauvignon », considering other viticultural research exposed in other works, we thought it was opportune to deepen the repercussion of foliage management. Among many models of training systems that we have taken into consideration over years of experimentation, the LYRA order 300 cm x 50 cm has given the better results regarding oenochemical, sensorial and economical quality of wines. For this reason we have considered the implications of different foliage management systems on this model, drawing the following indications:</p><p style="text-align: justify;">a) The training system which has shown the best results was LYRA order 300 cm x 50 cm for «Cabernet-Sauvignon» variety, even with different foliage management.</p><p style="text-align: justify;">b) The best analytical results are achieved by LYRA « Managed Volume » foliage, especially concerning the chromatic component.</p><p style="text-align: justify;">c) The sensorial analysis confirms the excellence of this treatment.</p><p style="text-align: justify;">d) The better «economic quality» is achieved to LYRA « Managed Volume » foliage; in fact the consumers have attributed the highest «intrinsic value» to the corresponding wine.</p><p style="text-align: justify;">e) In conclu,es must be checked in the next vintages.</p>

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Marroni, Igor Villela, Andrea Bittencourt Moura, and Bernardo Ueno. "Chemical and biological treatments of castor bean seeds: effects on germination, emergence and associated microorganisms." Revista Brasileira de Sementes 34, no. 1 (2012): 21–28. http://dx.doi.org/10.1590/s0101-31222012000100003.

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The effect of chemical and biological treatments on castor bean emergence, seedling vigor, dry matter production, and also the control of microorganisms associated with seeds of the AL Guarany 2002 and Lyra cultivars, was evaluated. The products tested were carbendazim + thiram, carboxin + thiram and a product based on Trichoderma. Total seed and seedling emergence were evaluated at 27 days after sowing whereas dry matter production was verified for plants removed 45 days after sowing. The Guarany 2002 AL cultivar had a higher incidence of microorganisms than the Lyra cultivar. The chemical treatment was 100% effective in controlling fungi but the biological treatment did not reduce microorganism incidence on the seeds. Chemical treatment resulted in plants with more dry matter and the best results were for carbendazim + thiram and carboxin + thiram at doses of 60 g + 140 g and 50 g + 50 g/100 kg of seeds, respectively. The carbendazim + thiram mixture was the only treatment which was statistically higher for total emergence whereas the biological treatment increased emergence only for the Lyra cultivar, thus demonstrating its lower efficiency. The importance of fungicides to control pathogens associated with seeds was discussed.

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Paul-Urena, Jeana, and Elizabeth Rosa Horan. "The Subversive Voice of Carmen Lyra." Hispania 84, no. 3 (September 2001): 475. http://dx.doi.org/10.2307/3657793.

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Azad, Sasha, and Chris Martens. "Lyra: Simulating Believable Opinionated Virtual Characters." Proceedings of the AAAI Conference on Artificial Intelligence and Interactive Digital Entertainment 15, no. 1 (October 8, 2019): 108–15. http://dx.doi.org/10.1609/aiide.v15i1.5232.

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Creating believable simulations of large populations of characters in virtual worlds represents a grand challenge for interactive artificial intelligence, requiring reasoning about social intelligence. In this paper, we focus on one aspect of this challenge: the dynamics of opinion change for virtual characters and its relationship with social affinity. We developed a simulated population of characters that debate politically-charged topics, called Lyra. Characters’ knowledge, opinions, and biases spread through this society based on existing cognitive models and social science theories. Our simulation generates outlines of group conversations that portray the system’s evolution, and clusters characters into affinity groups based on the outcome of the debates. We conducted a human-subjects study to evaluate these generated conversations and affinity groups for their believability and to inform future iterations of the simulation. We believe successful simulation of opinion change in social dynamics provides a foundation for computational recognition, prediction, and interfacing with humans.

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Jesus, W. D. R., and A. F. Santos. "On causality violation in Lyra Geometry." International Journal of Geometric Methods in Modern Physics 15, no. 08 (June 22, 2018): 1850143. http://dx.doi.org/10.1142/s0219887818501438.

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In this paper, the causality issues are discussed in a non-Riemannian geometry, called Lyra geometry. It is a non-Riemannian geometry originated from Weyl geometry. In order to compare this geometry with the Riemannian geometry, the Einstein field equations are considered. It is verified that the Gödel and Gödel-type metric are consistent with this non-Riemannian geometry. A non-trivial solution for Gödel universe in the absence of matter sources is determined without analogue in general relativity. Different sources are considered and then different conditions for causal and non-causal solutions are discussed.

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RAHAMAN, FAROOK. "SUPERCONDUCTING COSMIC STRING IN LYRA GEOMETRY." Modern Physics Letters A 18, no. 01 (January 10, 2003): 41–45. http://dx.doi.org/10.1142/s0217732303008806.

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The gravitational field of a superconducting cosmic string in the context of Lyra geometry is investigated. It has been shown that such a string has only a repulsive gravitational effects on a free moving particle. It is dissimilar to the case of a superconducting cosmic string in general relativity and Brans–Dicke theory, which gives rise to an attractive effect.

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47

Bouhallouf, Habiba. "Lyra black holes and Hawking radiation." Journal of Physics: Conference Series 1269 (July 2019): 012013. http://dx.doi.org/10.1088/1742-6596/1269/1/012013.

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RAHAMAN, F., S. CHAKRABORTY, and J. BERA. "INHOMOGENEOUS COSMOLOGICAL MODEL IN LYRA GEOMETRY." International Journal of Modern Physics D 11, no. 09 (October 2002): 1501–4. http://dx.doi.org/10.1142/s0218271802001937.

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Spisak, April. "Replica: Gemma; Lyra by Lauren Oliver." Bulletin of the Center for Children's Books 70, no. 3 (2016): 141–42. http://dx.doi.org/10.1353/bcc.2016.0912.

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Reddy, D. R. K., and R. Venkateswarlu. "Magnetized cosmological model in Lyra manifold." Astrophysics and Space Science 149, no. 2 (1988): 287–91. http://dx.doi.org/10.1007/bf00639797.

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