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Shahoodh, Mohammed Khalid, Mohd Sham Mohamad, Yuhani Yusof et Sahimel Azwal Sulaiman. « Subgraph of Compatible Action Graph for Finite Cyclic Groups of p-Power Order ». Journal of Physics : Conference Series 1366 (novembre 2019) : 012064. http://dx.doi.org/10.1088/1742-6596/1366/1/012064.
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Pranjali, Atul Gaur et Mukti Acharya. « 𝒞-Consistency in signed total graphs of commutative rings ». Discrete Mathematics, Algorithms and Applications 08, no 03 (août 2016) : 1650041. http://dx.doi.org/10.1142/s1793830916500415.
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Motivated by the earlier study on the notion of signed total graph of a commutative ring, in this paper, we characterize all the commutative rings with unity for which signed total graph is [Formula: see text]-consistent and sign-compatible. To do this, first, we derive a formula to determine the degree of each vertex in [Formula: see text] (induced subgraph of the total graph), when [Formula: see text] and [Formula: see text], where each [Formula: see text]’s is a field of characteristic [Formula: see text], [Formula: see text] is an odd prime, [Formula: see text] and [Formula: see text].
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Costabello, Luca, et Fabien Gandon. « Context-Aware Presentation of Linked Data on Mobile ». International Journal on Semantic Web and Information Systems 10, no 4 (octobre 2014) : 45–76. http://dx.doi.org/10.4018/ijswis.2014100103.
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In this paper the authors focus on context-aware adaptation for linked data on mobile. They split up the problem in two sub-questions: how to declaratively describe context at RDF presentation level, and how to overcome context imprecisions and incompleteness when selecting the proper context description at runtime. The authors answer their two-fold research question with PRISSMA, a context-aware presentation layer for Linked Data. PRISSMA extends the Fresnel vocabulary with the notion of mobile context. Besides, it includes an algorithm that determines whether the sensed context is compatible with some context declarations. The algorithm finds optimal error-tolerant subgraph isomorphisms between RDF graphs using the notion of graph edit distance and is sublinear in the number of context declarations in the system.
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Błażej, Paweł, Małgorzata Wnetrzak, Dorota Mackiewicz et Paweł Mackiewicz. « Basic principles of the genetic code extension ». Royal Society Open Science 7, no 2 (février 2020) : 191384. http://dx.doi.org/10.1098/rsos.191384.
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Compounds including non-canonical amino acids (ncAAs) or other artificially designed molecules can find a lot of applications in medicine, industry and biotechnology. They can be produced thanks to the modification or extension of the standard genetic code (SGC). Such peptides or proteins including the ncAAs can be constantly delivered in a stable way by organisms with the customized genetic code. Among several methods of engineering the code, using non-canonical base pairs is especially promising, because it enables generating many new codons, which can be used to encode any new amino acid. Since even one pair of new bases can extend the SGC up to 216 codons generated by a six-letter nucleotide alphabet, the extension of the SGC can be achieved in many ways. Here, we proposed a stepwise procedure of the SGC extension with one pair of non-canonical bases to minimize the consequences of point mutations. We reported relationships between codons in the framework of graph theory. All 216 codons were represented as nodes of the graph, whereas its edges were induced by all possible single nucleotide mutations occurring between codons. Therefore, every set of canonical and newly added codons induces a specific subgraph. We characterized the properties of the induced subgraphs generated by selected sets of codons. Thanks to that, we were able to describe a procedure for incremental addition of the set of meaningful codons up to the full coding system consisting of three pairs of bases. The procedure of gradual extension of the SGC makes the whole system robust to changing genetic information due to mutations and is compatible with the views assuming that codons and amino acids were added successively to the primordial SGC, which evolved minimizing harmful consequences of mutations or mistranslations of encoded proteins.
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Giglou, Abolfazl Nazari, Celal Güney Olgün et Tuğba Eskişar. « A New Method for Base-Slab Analysis of a Dock Settling Basin ». International Journal of Computational Methods 14, no 01 (11 janvier 2017) : 1750057. http://dx.doi.org/10.1142/s0219876217500578.
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This paper suggests a new method of computing interior forces and deformations of the base-slab of a dock settling basin. The base element is considered as a finite beam under the action of bending supported by subgrade soil. The deformation of the subgrade is determined through the Fuss–Winkler model. The basic parameter (i.e., coefficient of subgrade reaction) of this model is a nonlinear parabolic equation along the length of the beam. The solution of this model leads to an ordinary differential equation that can be solved by using boundary conditions and Picard limit of a sequence method. After the solution of the equation, the deformations and interior forces are computed at any arbitrary cross section of the beam and the results of this study are compared with the other methods offered in the literature and compatible outcomes are achieved.
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Ibrahim, Osama Ragab, Laila Ali Al Maqbali et Mahmood Sulaiyam Al Shaqsi. « Comparison between Sediment Material and Natural Subgrade Material for Road Construction ». Key Engineering Materials 913 (18 mars 2022) : 215–26. http://dx.doi.org/10.4028/p-yj1y51.
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This paper presents the comparison between sediment and natural subgrade material for road construction to check its stability to improve soil properties. Two samples were investigated which are sediment and subgrade construction material which were taken from Wilayat A’seeb, Oman. Sediment was collected from Alkhoud dam, Muscat, and subgrade construction material was collected from Al Mubilah construction site, Muscat. Elemental analyses and mechanical tests were conducted to achieve the purpose of the study. According to the AASHTO classification, the result of the sediment samples shows that it was silty and clayey gravel A-2-4 and clayey sands or sandy clay mixtures according to USCS classification. Also, investigations on the subgrade construction material show that it was silty and clayey gravel and sand A-2-7 according to AASHTO classification and well-graded sands, gravelly sands according to USCS. The result of grain size distribution curves shows that subgrade soil is applicable to be used but sediment is not applicable as pavement construction and. The maximum dry density (MDD) and optimum moisture content (OMC) of the sediment sample are 1.422 g/cm3 and 20.3% respectively. Also, the maximum dry density (MDD) and optimum moisture content (OMC) of the subgrade construction material are 1.634 g/cm3 and 15.5 % respectively. As compared between the two materials, it found that the result of maximum CBR value of subgrade material was 16.13% and the maximum CBR value of sediment material was 16.07% and that means both materials are very close in strength and sediment has the power to be used in road construction with some improvement. According to the experimental results, it shows that the investigated sediment and natural subgrade soil are suitable to be used in the subgrade layer because it is corresponding to the range of Omani standards but it is not suitable to be used as subbase and base layers. Other standards might be compatible with the results to be effective use in subbase and base layers.
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Diaz, Mario Hernan, Luz Guadalupe Ibañez Ledesma, Felipe Torres Gomez, Marcelina Carretero, Rosario Pasquinelli, Bernardo Julio Martínez et María Florencia Grande Ratti. « Quimioterapia al final de la vida es compatible con muerte digna y cuidados paliativos ». Revista de la Facultad de Ciencias Médicas de Córdoba 80, no 2 (30 juin 2023) : 93–98. http://dx.doi.org/10.31053/1853.0605.v80.n2.37489.
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Introducción: El tratamiento oncológico es cada vez más agresivo. El objetivo de este trabajo fue estimar las personas fallecidas por causa oncológica, reportar la frecuencia de uso de quimioterapia (QT) en los últimos 3 meses de vida, y describir las características clínicas-epidemiológicas de estos pacientes.
Métodos: Se incluyó una muestra consecutiva de fallecidos durante el 2017, afiliados a prepaga del Hospital Italiano de Buenos Aires. Mediante revisión de historias clínicas, se los clasificó según la causa de muerte (oncológico u otra causa), validando diagnóstico y estadio de base, performance status (PS). Se reportan prevalencias con IC95% y se utilizó estadística descriptiva.
Resultados: Fallecieron 2293 personas, 59% mujeres con mediana de 84 años. Hubo un total de 736 fallecidos por cáncer, representando el 32% (IC95% 30-34). Este último subgrupo presentó una mediana de 75 años, 54% eran mujeres y sólo una paciente tenía directivas anticipadas. En cuanto al lugar de fallecimiento, 80% ocurrió hospitalizado (65% sala general y 15% unidad cerrada). Los tumores más frecuentes fueron: pulmón, colorrectal-gástrico, hematológico, y mama. Un total de 390 pacientes recibieron QT al final de la vida (53%; IC95% 49-57), siendo 53% mujeres y con promedio de 68 años. En cuanto a la enfermedad oncológica de base: 81% tenían tumor sólido, 75% estadío avanzado, y mayoritariamente con mala/regular capacidad para realizar actividades cotidianas (25% PS3 y 32% PS4 respectivamente).
Conclusión: Existe una frecuencia preocupante del uso de QT en el fin de vida y los fallecimientos siguen siendo principalmente intrahospitalarios.
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Yu, Tianbo. « Microstructural evolution during recovery of deformed aluminium—Effect of deformation strain ». IOP Conference Series : Materials Science and Engineering 1249, no 1 (1 juillet 2022) : 012001. http://dx.doi.org/10.1088/1757-899x/1249/1/012001.
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Abstract Recovery takes place during annealing of a deformed metal, releasing some of the stored energy. Many recovery mechanisms have been proposed in the literature and these mechanisms strongly depend on the deformation microstructure. In this work, recent progress in the study of recovery in aluminium is reviewed. In lightly deformed aluminium, subgrain growth (through boundary migration and coalescence) is found to be an important recovery mechanism, whereas in heavily deformed samples, uniform coarsening through Y-junction motion is found to be the dominant recovery mechanism. The kinetics of recovery follows a universal coarsening model for aluminium deformed to both low and high strains, in which the apparent activation energy increases in the course of recovery. Furthermore, a new definition of recovery is suggested to be compatible with observations at both low and high strains.
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Liu, Jun, Ming Jen Tan, Sylvie Castagne et Samuel Chao Voon Lim. « EBSD Study of Microstructural Development during Superplastic-Like Forming ». Materials Science Forum 735 (décembre 2012) : 37–42. http://dx.doi.org/10.4028/www.scientific.net/msf.735.37.
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Superplastic-like forming takes advantages of both deep drawing and bulge forming. The use of non-superplastic grade materials enables it to be more compatible with existing forming process with less material and time cost. Here, a non-isothermal heating system was adopted to selectively heat up selected localized areas to form the workpiece more efficiently. Electron backscattered diffraction (EBSD) was then used to investigate the wide range of grains in the formed samples resulting from elevated-temperature and large-strain deformation. The crystallographic textures of the material before and after deformation were observed for comparison. Very little recrystallization was found in the midst of the deformed grains. Considerable amount of elongated grains with high angle boundaries were produced during deformation. Many subgrain boundaries have developed within the big grains due to dynamic recovery.
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Matamoros Muñox, Juan Sebastián, Vivian Stefany Soto Rodriguez et Jorge Yamit Vargas Espitia. « Tromboembolismo Pulmonar en Pacientes con Cáncer ». Ciencia Latina Revista Científica Multidisciplinar 7, no 6 (21 décembre 2023) : 1903–20. http://dx.doi.org/10.37811/cl_rcm.v7i6.8823.
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El embolismo pulmonar (EP) es una patología bien conocida y delimitada que se asocia fuertemente al antecedente de cáncer, delimitando un subgrupo de pacientes con clínica que, aunque es compatible con la clásica también puede variar, así como el abordaje diagnóstico en presencia de malignidad. El manejo par todos los pacientes con EP definitivamente es la anticoagulación, con agentes intravenosos o subcutaneos como las heparinas de bajo peso molecular (HBPM) o los anticoagulantes directos orales (DOAC), según el perfil de estos pacientes. La evidencia reciente en cuanto al manejo a corto y largo plazo de pacientes con cáncer y EP podría cambiar la perspectiva del manejo y abre la puerta a la elección del clínico del agente que decide formular según las condiciones del paciente, sus antecedentes y preferencias.
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James, Jinto, K. A. Germina et P. Shaini. « Learning graphs and 1-uniform dcsl graphs ». Discrete Mathematics, Algorithms and Applications 09, no 04 (août 2017) : 1750046. http://dx.doi.org/10.1142/s179383091750046x.
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A distance compatible set labeling (dcsl) of a connected graph [Formula: see text] is an injective set assignment [Formula: see text] [Formula: see text] being a non-empty ground set, such that the corresponding induced function [Formula: see text] given by [Formula: see text] satisfies [Formula: see text] for every pair of distinct vertices [Formula: see text] where [Formula: see text] denotes the path distance between [Formula: see text] and [Formula: see text] and [Formula: see text] is a constant, not necessarily an integer, depending on the pair of vertices [Formula: see text] chosen. A dcsl [Formula: see text] of [Formula: see text] is [Formula: see text]-uniform if all the constants of proportionality with respect to [Formula: see text] are equal to [Formula: see text] and if [Formula: see text] admits such a dcsl then [Formula: see text] is called a [Formula: see text]-uniform dcsl graph. The family [Formula: see text] is well-graded family, if there is a tight path between any two of its distinct sets. A learning graph is an [Formula: see text]-induced graph of a learning space. In this paper, we initiate a study on subgraphs of 1-uniform graphs which lead to the study of Knowledge Structures, Learning Spaces and Union-closed conjecture using graph theory techniques.
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Hong, Sungryong, Donghui Jeong, Ho Seong Hwang, Juhan Kim, Sungwook E. Hong, Changbom Park, Arjun Dey, Milos Milosavljevic, Karl Gebhardt et Kyoung-Soo Lee. « Constraining cosmology with big data statistics of cosmological graphs ». Monthly Notices of the Royal Astronomical Society 493, no 4 (27 février 2020) : 5972–86. http://dx.doi.org/10.1093/mnras/staa566.
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ABSTRACT By utilizing large-scale graph analytic tools implemented in the modern big data platform, apache spark, we investigate the topological structure of gravitational clustering in five different universes produced by cosmological N-body simulations with varying parameters: (1) a WMAP 5-yr compatible ΛCDM cosmology, (2) two different dark energy equation of state variants, and (3) two different cosmic matter density variants. For the big data calculations, we use a custom build of standalone Spark/Hadoop cluster at Korea Institute for Advanced Study and Dataproc Compute Engine in Google Cloud Platform with sample sizes ranging from 7 to 200 million. We find that among the many possible graph-topological measures, three simple ones: (1) the average of number of neighbours (the so-called average vertex degree) α, (2) closed-to-connected triple fraction (the so-called transitivity) $\tau _\Delta$, and (3) the cumulative number density ns ≥ 5 of subgraphs with connected component size s ≥ 5, can effectively discriminate among the five model universes. Since these graph-topological measures are directly related with the usual n-points correlation functions of the cosmic density field, graph-topological statistics powered by big data computational infrastructure opens a new, intuitive, and computationally efficient window into the dark Universe.
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Simonsen, Erik, et Ulf Isacsson. « Soil behavior during freezing and thawing using variable and constant confining pressure triaxial tests ». Canadian Geotechnical Journal 38, no 4 (1 août 2001) : 863–75. http://dx.doi.org/10.1139/t01-007.
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Although variable confining pressure (VCP) triaxial tests are generally preferred to constant confining pressure (CCP) triaxial tests due to the more realistic stress application, VCP tests have never been utilized when investigating freezethaw effects on unbound road materials. In this study, three soils were investigated for resilient behavior during freezing and thawing utilizing both VCP and CCP triaxial testing. The soils were tested at selected temperatures between +20 and 10°C during one full freezethaw cycle. The results were analyzed in terms of the traditionally used resilient modulus and Poisson's ratio, as well as volumetric and shear components, and indicate a significant difference in moduli computed from CCP and VCP data. However, resilient moduli display compatible values when interpreted in terms of mean values of deviator stress and mean normal stress. With regard to freezevthaw effects on resilient moduli, the results are inconsistent with previous findings. However, this can be explained by the different test conditions applied.Key words: freezethaw, triaxial tests, unbound pavement materials, subgrade soils, resilient modulus.
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Santos, Lauro Cézar Montefalco de Lira, et Luís Gustavo Ferreira Viegas. « Exploring the relationships between shear zones and granites : field and microstructural data for contrasting case studies of the Borborema Province (NE Brazil) ». Geologia USP. Série Científica 21, no 2 (14 juillet 2021) : 3–18. http://dx.doi.org/10.11606/issn.2316-9095.v21-180579.
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We discuss meso- and microstructural features of granites closely related to strike-slip shear zones in the Borborema Province, NE Brazil. The Riacho do Icó stock is an en-cornue intrusion aged at ca. 607 Ma. Magmatic fabric is recorded in the core of the granite, whilst increasing deformation is marked by the development of mylonitic fabrics towards the Afogados da Ingazeira shear zone, including magmatic foliation and lineation rotation. Early recrystallization of quartz and K-feldspar crystals is widespread as a fabric with well-developed granoblastic polygonal textures and lobate subgrain boundaries, heterogeneously deformed lenses and ameboid quartz ribbons, typical of igneous rocks submitted to deformation in deep crustal levels. On the other hand, the Espinho Branco-Santa Luzia leucogranitic belt is hosted along the Patos Lineament, aged between the ca. 575 – 565 Ma interval. These rocks show discordant relationships with the host migmatites and the main deformational fabric is characterized by a dominant magmatic foliation that is locally overprinted by structures that are typical of solid-state flow. Quartz melt pockets and interstitial quartz grains filling fractures in feldspar clasts are common. Such characteristics are compatible with granites that were injected in the continental crust along planar anisotropies (i.e., shear zones) formed during the late-stage partial melting events that originated the migmatites of the area. The case studies are proxies in the understanding of different episodes of magma emplacement along shear zones in this part of West Gondwana.
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Chilquillo-Vega, Vera L., Jaime E. Lama-Valdivia et Jhony A. De la Cruz-Vargas. « Síndrome de burnout en médicos asistentes del Hospital Nacional Hipólito Unanue de Lima – Perú, 2018. » Revista de Neuro-Psiquiatria 82, no 3 (1 octobre 2019) : 175. http://dx.doi.org/10.20453/rnp.v82i3.3570.
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Objetivos: Identificar la prevalencia y los factores asociados con el Síndrome de Burnout (SBO) en médicos asistentes del Hospital Nacional Hipólito Unanue de Lima-Perú, en el año 2018. Material y métodos: Estudio observacional, transversal y analítico. La población inicial estuvo constituída por 252 médicos. Se seleccionó una muestra con la técnica del muestreo aleatorio estratificado. Se registraron diferentes variables sociodemográficas y laborales por medio de una encuesta anónima. Para el diagnóstico de SBO se empleó el Maslach Burnout Inventory. Se determinaron las variables asociadas con el SBO mediante un modelo de regresión logística. Se consideró un valor de p < 0,05 como significativo. Resultados: De 150 médicos encuestados, 23 (15,3%) mostraron resultados compatibles con SBO. Sesenticinco (43,3%) de los encuestados tuvieron un nivel alto de cansancio emocional, 69 (46%) un nivel alto de despersonalización y 61 (41,7%) un nivel bajo de realización personal (p < 0,05). Las variables asociadas con el SBO fueron sexo masculino (OR = 6,12; IC95 %, 1,43 – 26,13, p = 0,01) como factor de riesgo y tener un trabajo adicional (OR = 0,15; IC95 %: 0,04 – 0,49, p = 0,002), mostró ser un posible factor de proteccción. Conclusiones: Se encontró una baja prevalencia de SBO entre médicos asistentes, aunque un subgrupo significativo mostró altos niveles de cansancio emocional y despersonalización con bajos niveles de realización personal. El sexo masculino se asoció al SBO, en tanto que tener un trabajo adicional, a un efecto protector.
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LEMOS, Wagner Travassos, Marcelo dos Santos SALOMÃO, Luiz Carlos BERTOLINO et Francisco José da SILVA. « OCORRÊNCIAS DE CASSITERITA E DE MINERAIS DO SUBGRUPO DA COLUMBITA NOS MUNICÍPIOS DE CONSELHEIRO LAFAIETE, CARANAÍBA E CRISTIANO OTONI, SUL DO ESTADO DE MINAS GERAIS. » Geosciences = Geociências 42, no 4 (15 janvier 2024) : 467–79. http://dx.doi.org/10.5016/geociencias.v42i4.18125.
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RESUMO - Os municípios de Conselheiro Lafaiete, Caranaíba e Cristiano Otoni, no estado de Minas Gerais, estão inseridos na compartimentação tectônica denominada de Cinturão Mineiro. Esta região é considerada como uma extensão da Província Pegmatítica de São João del Rei, conhecida pelas suas mineralizações de Sn, Nb, Ta e Li. As principais unidades presentes correspondem ao Granito Cupim e o Gnaisse Caatinga. O mapa aerogeofísico da Amplitude do Sinal Analítico exibe uma assinatura diferenciada para o granito Cupim, e sugere uma área não cartografada associada a essa unidade. O mapa Gamaespectrométrico do elemento urânio exibe valores superiores a 3 ppm para o Granito Cupim e parte do Gnaisse Caatinga. As análises litogeoquímicas demostraram que o Granito Cupim é resultado de um magmatismo intraplaca. O Gnaisse Caatinga exibe resultado compatível a ambiente de arcos magmáticos acrescionários. O pegmatito foi classificado como sendo do tipo LCT de acordo com Cerný & Ercit (2005), e está associado ao Granito Cupim. Foram identificados 15 pontos mineralizados com cassiterita e minerais do subgrupo da columbita em drenagens, placeres, pegmatito e garimpos abandonados. As análises no MEV-EDS em grãos de cassiterita indicaram a presença de inclusões de tantalita e nióbio, e alto teor de estanho. Palavras-chave: Cassiterita. Columbita. Cinturão Mineiro. Conselheiro Lafaiete. Caranaíba. Cristiano Otoni. ABSTRACT - The municipalities of Conselheiro Lafaiete, Caranaíba and Cristiano Otoni, in the state of Minas Gerais, are inserted in the tectonic compartmentation called Cinturão Mineiro. This region is considered as an extension of the São João del Rei Pegmatite Province, known for its Sn, Nb, Ta and Li mineralizations. The principal units present are Cupim Granite and Caatinga Gneiss. The aerogeophysical map of the Analytical Signal Amplitude displays a different signature for the Cupim granite, and suggests an uncharted area associated with this unit. The Gammaspectrometric map of the element uranium shows values above 3 ppm for the Cupim Granite and part of the Caatinga Gneiss. Lithogeochemical analyses demonstrated that the Cupim Granite is the result of intraplate magmatism. The Caatinga Gneiss displays results compatible with an accretionary magmatic arc environment. The pegmatite was classified as being of the LCT type according to Cerný & Ercit (2005), and is associated with the Cupim Granite. Fifteen mineralized samples with cassiterite and minerals from the columbite subgroup were identified in creeks, placers, pegmatite and abandoned mines. SEM-EDS analyses of cassiterite grains indicated the presence of tantalite and niobium inclusions, and a high tin content. Palavras-chave: Cassiterite. Columbite. Mineiro Belt. Conselheiro Lafaiete. Caranaíba. Cristiano Otoni. .
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Moris, Pieter, Danh Bui-Thi, Kris Laukens et Pieter Meysman. « MILES : a Java tool to extract node-specific enriched subgraphs in biomolecular networks ». Bioinformatics, 14 novembre 2019. http://dx.doi.org/10.1093/bioinformatics/btz849.
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Abstract Summary The growing availability of biomolecular networks has led to a need for analysis methods that are able to extract biologically meaningful information from these complex data structures. Here we present MILES (MIning Labeled Enriched Subgraphs), a Java-based subgraph mining tool for discovering motifs that are associated to a given set of nodes of interest, such as a list of genes or proteins, in biomolecular networks. It provides a unique extension to the widely used enrichment analysis methodologies by integrating network structure and functional annotations in order to discern novel biological subgraphs which are enriched in the targets of interest. The tool can handle various types of input data, including (un)directed, (un)connected and multi-label networks, and is thus compatible with most types of biomolecular networks. Availability and implementation MILES is available as a platform-independent Java application at https://github.com/pmoris/miles-subgraph-miner alongside a user manual, example datasets and the source code. Supplementary information Supplementary data are available at Bioinformatics online.
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Guo, Zhiwei, Christoph Brause, Maximilian Geißer et Ingo Schiermeyer. « Compatible Spanning Circuits and Forbidden Induced Subgraphs ». Graphs and Combinatorics 40, no 1 (19 janvier 2024). http://dx.doi.org/10.1007/s00373-023-02735-8.
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AbstractA compatible spanning circuit in an edge-colored graph G (not necessarily properly) is defined as a closed trail containing all vertices of G in which any two consecutively traversed edges have distinct colors. The existence of extremal compatible spanning circuits (i.e., compatible Hamilton cycles and compatible Euler tours) has been studied extensively. Recently, sufficient conditions for the existence of compatible spanning circuits visiting each vertex at least a specified number of times in specific edge-colored graphs satisfying certain degree conditions have been established. In this paper, we continue the research on sufficient conditions for the existence of such compatible s-panning circuits. We consider edge-colored graphs containing no certain forbidden induced subgraphs. As applications, we also consider the existence of such compatible spanning circuits in edge-colored graphs G with κ(G) ≥ α(G), κ(G) ≥ α(G) − 1 and κ (G) ≥ α(G), respectively. In this context, κ(G), α(G) and κ (G) denote the connectivity, the independence number and the edge connectivity of a graph G, respectively.
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« Soil Stabilization For Pavements Using Geofabrics Based On California Bearing Ratio ». International Journal of Engineering and Advanced Technology 8, no 5C (23 septembre 2019) : 1569–70. http://dx.doi.org/10.35940/ijeat.e1232.0585c19.
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India has the largest road network however the prevailing roads ar structurally inadequate to accommodate the current volume of traffic. Use of geosynthetics is compatible and conjointly effective within the method of up soil properties. the current study conducts experiment on the performance of geotextile (woven and non-woven) as soft subgrade and unbound gravel in unpaved versatile pavement system victimization CA Bearing magnitude relation (CBR) take a look at. Reinforcement magnitude relation comparison of woven and non-woven geotextile reinforcenment supported CMB load penetration take a look at indicates that the performance is improved with the inclusion of geotextile.
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Hu, Ting, Mingjing Fang, Kun Fang, Liantong Mo et Yue Xiao. « Feasibility Study of a Compatible Design Method for Asphalt Concrete-Based Track Substructure Considering Viscoelastic Properties ». Transportation Research Record : Journal of the Transportation Research Board, 29 octobre 2022, 036119812211300. http://dx.doi.org/10.1177/03611981221130028.
Texte intégralRésumé :
An evaluation is needed as to whether the constant thickness for the formation layer of 0.4 m and the bottom layer of 2.3 m in China’s current subgrade design is appropriate for the asphalt trackbed given its viscoelastic properties. This paper presents numerical research on the compatible design of roadbed thickness for asphalt concrete-based track (AC-based track) with SBS-25, using finite element modeling (FEM). Accordingly, a compatible design method for the substructure of an AC-based track was proposed following field and data investigation, material and numerical testing, as well as optimization and field testing with soundness verification. Compared with the traditional design, the formation layer needs to be strengthened, and the bottom layer thickness can be appropriately reduced or replaced with building solid waste. The dynamic stress attenuation rate and dynamic-static stress ratio are taken as the design standards of formation and bottom layers, respectively. The optimal design scheme at 20°C is determined when the asphalt track is 300 mm thick, the formation layer of 0.50 m and the bottom layer of 1.87 m are matched. However, at 40°C, the dynamic deformation control fails to pass the verification. Therefore, it is necessary to adjust the thickness of the asphalt trackbed or change the types of asphalt binder to carry out the numerical test again if applied in a high-temperature region. The findings contribute to the AC-based track substructure design; however, the proposed design method still needs further improvement and verification from the field or full-scale indoor tests.
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Bestmann, Michel, Giorgio Pennacchioni et Bernhard Grasemann. « Deformation-induced Japan twinning in quartz during incipient mylonitization ». Geology, 12 juillet 2021. http://dx.doi.org/10.1130/g49077.1.
Texte intégralRésumé :
Many crystalline rocks of the continental crust contain coarse-grained quartz as a main mineral (e.g., granitoids). Incipient deformation of coarse quartz, which likely controls the accumulation of bulk strain in heterogeneously deformed crustal rock volumes, commonly develops microshear zones (MSZs) of localized recrystallization. At mid-crustal conditions, where quartz deformation is mostly accomplished by subgrain rotation recrystallization, grains of MSZs can show an abrupt change in crystallographic orientation (large misorientation angle) with respect to the host quartz that is still not fully understood. We analyzed MSZs (20–200 μm thick) from deformed coarse-grained (millimeter grain size) quartz veins in the Austroalpine Schobergruppe (Eastern Alps). Electron backscatter diffraction analysis reveals that the MSZs are characterized by a nearly 90° misorientation angle between the c-axes of the host and new grains, which also share one {m} and one {1122} pole, compatible with Japan twinning. This abrupt switch of the c-axis orientation can promote geometrical softening and shear localization. So far, Japan twinning has been interpreted as a growth feature. We show that deformation-induced twinning in quartz, including Japan and Dauphiné twinning, can play an important role in initiation of crystal-plastic deformation within the crust.