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Journal articles on the topic 'Diagrama de dispersión'

Author: Grafiati

Published: 4 June 2025

Last updated: 15 July 2025

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1

Rossi, Luis Sebastián. "Ciudades y diagrama de control." Hipertextos 11, no. 19 (2023): 063. http://dx.doi.org/10.24215/23143924e063.

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Las ciudades latinoamericanas son el escenario de una dispersión de plataformas de circulación, transporte y movilidad. Este artículo teórico tiene como objetivo recuperar aportes conceptuales –del posestructuralismo y de los estudios de medios– que permitan comprender la plataformización como efectuación de un poder de control que opera sobre los principales acontecimientos de multiplicidades en espacios abiertos. Para ello, primero, recorreremos algunas tradiciones que han advertido las crecientes comparaciones –forjadas al calor del capitalismo tardío– entre ciudades y máquinas de informaci

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Manzo Garrido, Hernán Joaquín, Patricio Häberle Tapia, and Héctor Henao Zapata. "Determinación experimental del equilibrio de fases en el sistema Ti- Nb-Mn a temperaturas entre 1150°C y 1200°C." DYNA 86, no. 209 (2019): 304–11. http://dx.doi.org/10.15446/dyna.v86n209.68055.

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El aumento y envejecimiento de la población mundial conlleva un progresivo uso de implantes biomédicos. Las aleaciones base titanio, han sido aplicadas extensamente. Aleaciones Ti-Mn, Ti-Nb, Ti-Nb-Mn y Ti-Ta-Nb-Mn se han postulado con un potencial uso biomédico para las siguientes generaciones. Información disponible del sistema en equilibrio Ti-Nb-Mn es escasa en la literatura. El presente trabajo contribuye en el estudio experimental de las isotermas 1150°C y 1200°C del diagrama ternario Ti-Nb-Mn, establecidas mediante técnicas de microscopia electrónica de barrido, espectroscopia por disper

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3

López Lara, Verónica, and Jesús Antonio Gómez Escorcha. "Calidad total: Una alternativa de gestión para el desarrollo de la producción científica en la educacion superior." REVISTA CIENTÍFICA ECOCIENCIA 5, no. 2 (2018): 1–18. http://dx.doi.org/10.21855/ecociencia.52.59.

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El objetivo principal del estudio fue implementar acciones formativas referentes a la calidad total como alternativa de gestión para el desarrollo de la producción científica en educación superior. Por consiguiente, se fundamentó en el paradigma cualitativo, modalidad Investigación Acción Participativa (IAP), se organizó a través del diagnóstico, planificación que permitió desarrollar la metodología con la finalidad de proporcionar la solución al problema planteado. La recolección de evidencias, se utilizó la observación directa, mediante el instrumento de guion de observación y la guía de ent

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Escudero, Luis, Jesús Ledesma, Han Xu, and Daniel Grados. "Análisis comparativo de la clorofila-a del sensor Modis-Aqua con datos in situ frente a la costa peruana durante el verano 2018." Boletin Instituto del Mar del Perú 39, no. 1 (2024): 65–78. http://dx.doi.org/10.53554/boletin.v39i1.406.

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Se registró la clorofila-a in situ superficial (0-0,5 m) por la técnica fluorométrica durante el crucero 2018-0204 a lo largo de la costa peruana y, se estimó el mismo parámetro a través del modelo OC3M usando imágenes de nivel 0 del sensor MODIS, del satélite Aqua de 250 m de resolución espacial, con el programa SeaDAS 7.4. Al comparar ambas mediciones en 72 estaciones efectuadas durante el crucero, se obtuvo R2 de 0,66; en las sub-áreas Norte y Sur se detectó mayor correlación (R2 de 0,77 y 0,76) mientras que en el Centro fue 0,42 debido a la alta variabilidad temporal de la distribución de

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5

Sarmiento Pérez, Gustavo. "Palinología de la Formación Guaduas. Estratigráfica y sistemática." Boletín Geológico 32, no. 1-3 (1992): 45–126. http://dx.doi.org/10.32685/0120-1425/bolgeol32.1-3.1992.198.

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En este estudio se trata de hacer una nueva evaluación de la investigación palinológica para el intervalo Maastrichtiano superior - Paleoceno inferior correspondiente a la Formación Guaduas de la cordillera Oriental de Colombia. En el material colectado (área de Sutatausa - al norte de Bogotá) se encontró que del total de 79 tipos diferentes de palinomorfos, 33 son nuevas morfoespecies de esporas y polen. Adicionalmente se proponen 8 morfogéneros y 6 nuevas combinaciones. La dispersión de la palinoflora presentada en el diagrama permite reconocer dos zonas (I y II) y a su vez subdividir la zon

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Caicedo Delgado, Nayiver Gladys, and Carlos Alberto Andrade Alegria. "Ajuste protección de sobreexcitación ANSI 24 de un generador sincrónico para un relé Siemens 7UM62." Tecnura 23, no. 61 (2019): 57–68. http://dx.doi.org/10.14483/22487638.13785.

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Contexto: Las funciones de protección de un grupo generador-transformador deben garantizar su vida útil cuando se presenta una condición de operación anormal, de esta manera se mejora la confiabilidad del servicio de energía eléctrica en el sistema eléctrico de potencia. Cuando la relación V/Hz del grupo se incrementa puede presentarse saturación en el núcleo magnético, induciendo un flujo de dispersión en los componentes no laminados que no están diseñados para conducirlo y puede ocurrir un daño en segundos; razón por la cual, estas máquinas se protegen con la función de protección (FDP) ANSI

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Chuscano Torres, Deshiret, and Leidy Tarazona Tobo. "Cuencas atmosféricas en una proyección anual del municipio de San José de Cúcuta mediante el modelo HYSPLIT." Revista Ing-Nova 4, no. 1 (2025): 9–21. https://doi.org/10.32997/rin-2025-4985.

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El presente artículo se enfocó en estudiar el origen de los contaminantes atmosféricos que afectan la calidad del aire de San José de Cúcuta, Colombia, analizándose la influencia de factores meteorológicos, geográficos y antrópicos, en la dispersión de contaminantes. Inicialmente se identificaron las principales fuentes de emisión de contaminantes a la cuenca atmosférica y los periodos climáticos del año 2023, esto mediante datos del IDEAM y el diagrama de Pareto; además del uso del programa HYSPLITcon un modelo de velocidad horizontal y dirección de trayectoria hacia atrás, con una resolución

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Solis Neffa, Viviana G., and Aveliano Fernández. "Estudios cromosómicos en especies de Turnera (Turneraceae)." Bonplandia 7, no. 1-4 (1993): 101. http://dx.doi.org/10.30972/bon.71-41431.

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En el presente trabajo se informa por primera vez el número de cromosomas de 5 especies y 1 variedad de <em>Turnera</em>. Se confirman previos reported en 5 taxones . Los cariotipos de 16 taxones de <em>Turnera</em> se describen por primera vez. Los resultados del análisis de los cromosomas son los siguientes: <em>T.weddelliana</em>, 2n = 2x = 14 = 12m 2sm; <em>T.pumilea</em>, 2n = 2x = 14 = 10 m 4sm; <em>T.hassleriana</em>, 2n = 2x = 14 = 12m 2sm; <em>T.chamaedryfolia</em>, 2n = 2x = 26 = 16m + 8 sm + 2 st; <em>T.ca

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9

Aste, A., and D. Trautmann. "Finite calculation of divergent self-energy diagrams." Canadian Journal of Physics 81, no. 12 (2003): 1433–45. http://dx.doi.org/10.1139/p03-103.

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Using dispersive techniques, it is possible to avoid ultraviolet divergences in the calculation of Feynman diagrams, making subsequent regularization of divergent diagrams unnecessary. We give a simple introduction to the most important features of such dispersive techniques in the framework of the so-called finite causal perturbation theory. The method is also applied to the "divergent" general massive two-loop sunrise self-energy diagram, where it leads directly to an analytic expression for the imaginary part of the diagram in accordance with the literature, whereas the real part can be obt

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Quevedo-García, Enrique, Aquiles Enrique Darghan, and Gerhard Fischer. "Clasificación de variables morfológicas del duraznero (Prunus persica L. Batsch) ‘Jarillo’ en la montaña santandereana Colombiana mediante análisis discriminante lineal." Revista Colombiana de Ciencias Hortícolas 11, no. 1 (2017): 39–47. http://dx.doi.org/10.17584/rcch.2017v11i1.6140.

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Durante el 2014 en la provincia de Pamplona, Colombia, se realizó un estudio sobre la variedad de duraznero Jarillo, con el fin de clasificar una serie de variables morfométricas distribuidos en tres fincas de diferenter altitud (Pamplona, 2.170 msnm; Chitagá, 1.870 msnm y Pamplonita, 1.670 msnm). Para el muestreo de árboles se utilizó el hipercubo latino condicional. En las hojas se midió el ancho por la longitud de limbos y el área del limbo usando el software ImageJ. En los frutos se midió el diámetro longitudinal sobre ecuatorial y los pesos secos. Se aplicó la técnica del análisis discrim

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GARCÍA DÍAZ, Xiomara Franchesca, Lucia Maria de Oliveira GUSMÃO, and Yimmy HERRERA. "INFLUENCIA DE LOS EVENTOS CLIMATICOS EL NIÑO Y LA NIÑA EN LA COMUNIDAD DE CHAETOGNATHA DE LAS AGUAS SUPERFICIALES DEL OCÉANO PACÍFICO COLOMBIANO." Revista Brasileira de Engenharia de Pesca 3, no. 1 (2009): 30–50. https://doi.org/10.18817/repesca.v3i1.62.

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Buscando determinar posibles indicadores biológicos de los eventos climáticos El Niño y la Niña, fueron analizadas la composición, abundancia y distribución de los quetognatos de las aguas superficiales del océano Pacifico colombiano (6°16’00”N - 1°18’00”N; 77°27’00”W - 84°00’00”W). Los organismos fueron colectados durante 5 cruceros oceanográficos realizados entre los años 1998 y 2000 (mayo-junio/1998; octubre/1998; mayo/1999; mayojunio/ 2000 y noviembre-diciembre/2000) mediante arrastres superficiales horizontales con una red de plancton estándar de 65 μm de ojo de malla. La abundancia y dis

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Passo, Rodrigo, Jeyson Patricio Egas García, Joffre Alexander Arguello Guerrero, Jhon Gregorio García Valencia, and Edwuin Paúl Lisintuña Toapanta. "Aplicación de un modelo matemático para el análisis del comportamiento del ciclo otto MCI bajo manipulación de parámetros ambientales." Revista Conectividad 5, no. 1 (2024): 1–19. http://dx.doi.org/10.37431/conectividad.v5i1.111.

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El objetivo de la investigación bibliográfica y experimental sobre el comportamiento del ciclo termodinámico en motores de combustión interna es verificar cambios de comportamiento, utilizando soluciones matemáticas para analizar los cambios de valores en términos de presión, volumen y giro del cigüeñal. La potencia de salida de un motor de gasolina de cuatro tiempos con compresión en el motor es proporcional a un exponente de 1.34 del coeficiente politrópico y la relación de compresión. Los efectos de las variaciones de presión y temperatura sobre el rendimiento de motores de combustión inter

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Teja-Ruiz, A. M., J. C. Juárez-Tapia, L. Hernández-Cruz, M. Reyes-Pérez, M. Pérez-Labra, and F. Patiño-Cardona. "Estudio de la recuperación de Ag (I) de un concentrado de sulfuro de zinc en medio S2O32- -O2." Tópicos de Investigación en Ciencias de la Tierra y Materiales 2, no. 2 (2015): 40–50. http://dx.doi.org/10.29057/aactm.v2i2.9703.

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En este trabajo se presenta el estudio de la lixiviación de Ag (I) con tiosulfato de sodio a partir de un concentrado de sulfuro de zinc. Las variables estudiadas fueron el efecto temperatura (298, 303, 313, 323 y 333 K) y efecto tamaño de partícula (-33, 33, 48, 53, 75, 106 micras) en el sistema S2O3²⁻-O₂. Con el fin de conocer la composición elemental y las especies minerales presentes en el concentrado, se llevó a cabo la caracterización química y mineralógica del concentrado a través de las siguientes técnicas: Espectroscopía de emisión de plasma acoplada por inducción (ICP), Espectrofotom

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Rajagopalan, Raj. "Stability of Colloidal Dispersions: A Thermodynamic Approach." Water Science and Technology 27, no. 10 (1993): 117–29. http://dx.doi.org/10.2166/wst.1993.0216.

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The classical theory of coagulation relies on relating the rate of interparticle collisions to the interaction forces, and thus to the physical and chemical parameters of the dispersion, through kinetic arguments, and is restricted to dilute systems. Here, we present a modern, thermodynamic theory capable of predicting stability diagrams for dense as well as dilute dispersions. Although based on statistical thermodynamics, the method is simple to use and requires only the second virial coefficient of osmotic pressure of the dispersion. All the information necessary for applying the model to ar

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Nitas, Michalis, Maria Kafesaki, and Samel Arslanagić. "Dispersion diagram reconstruction of effectively bianisotropic composite periodic media." EPJ Applied Metamaterials 11 (2024): 10. http://dx.doi.org/10.1051/epjam/2024008.

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A dispersion diagram reconstruction technique is proposed for arbitrarily bianisotropic composite periodic media, which utilizes a previously introduced parameter retrieval technique based on eigenvalue analysis and field averaging. We initially retrieve the effective electromagnetic parameters of a composite periodic medium consisting of Edge-Coupled Split-Ring Resonators (EC-SRRs) via this homogenization technique using alternative integration approaches for the averaging of the field components. Subsequently, we derive the analytical framework for the wave propagation in a homogeneous mediu

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Martínez Guillén, María, and Howard Romo Cevallos. "Calidad de vida en neuralgia postherpética en el servicio de dermatología del Hospital Luis Vernaza." INSPILIP 7, no. 23 (2023): 32–37. http://dx.doi.org/10.31790/inspilip.v7i23.466.

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Introducción: El herpes zóster (HZ) es el resultado de la reactivación del virus de la varicela zóster. La principal complicación del HZ es la neuralgia post-herpética (NPH), dolor que aparece en el dermatoma afectado 3 meses después de la resolución de las lesiones cutáneas. A pesar de la limitada evidencia, la NPH influye significativamente en la calidad de vida (CV) del paciente que la padece, afectando su capacidad funcional, estado emocional y capacidad de trabajo en la población activa. El objetivo de la presente investigación fue evaluar la calidad de vida en la NPH. Estudios previos no

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Jeffries, R. D. "Age spreads in star forming regions?" Proceedings of the International Astronomical Union 4, S258 (2008): 95–102. http://dx.doi.org/10.1017/s1743921309031743.

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AbstractRotation periods and projected equatorial velocities of pre-main-sequence (PMS) stars in star forming regions can be combined to give projected stellar radii. Assuming random axial orientation, a Monte-Carlo model is used to illustrate that distributions of projected stellar radii are very sensitive to ages and age dispersions between 1 and 10Myr which, unlike age estimates from conventional Hertzsprung-Russell diagrams, are relatively immune to uncertainties due to extinction, variability, distance etc. Application of the technique to the Orion Nebula cluster reveals radius spreads of

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Estepa Castro, José Antonio. "Interpretación de los diagramas de dispersión por estudiantes de bachillerato." Enseñanza de las Ciencias. Revista de investigación y experiencias didácticas 26, no. 2 (2008): 257–70. http://dx.doi.org/10.5565/rev/ensciencias.3679.

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En este trabajo se asume que la correlación es un tema importante en el currículo de bachillerato. Se esboza la importancia de los gráficos en la enseñanza de la estadística, fijando la atención en los diagramas de la dispersión, cuyo estudio suele iniciar el tema de dependencia aleatoria entre variables, correlación y regresión en el bachillerato actual. Una muestra de estudiantes de bachillerato ha cumplimentado un cuestionario sobre diagramas de dispersion, con cuyas respuestas se ha caracterizado el significado y la interpretación que estos estudiantes hacen de estos gráficos. Se finaliza

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HIRTHE, Eugenia, Carsten HOEVER, and Achillefs TSOTRAS. "An analysis of tire radiation properties using dispersion diagrams." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 270, no. 9 (2024): 2828–36. http://dx.doi.org/10.3397/in_2024_3238.

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Road traffic noise created by tire/road interaction not only depends on the road surface properties and the tire tread pattern geometry, but also on the tire construction. Besides the footprint shape, the tire construction can also affect the radiation efficiency of the tire modes. Dispersion diagrams represent the circumferential mode number of a mode shape as a function of its natural frequency. Identification of key branches in the dispersion diagram for a tire can help in understanding tire noise radiation under working conditions. After performing a cluster analysis, where all points belo

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Petrov, Artem, Alexander V. Chertovich, and Alexey A. Gavrilov. "Phase Diagrams of Polymerization-Induced Self-Assembly Are Largely Determined by Polymer Recombination." Polymers 14, no. 23 (2022): 5331. http://dx.doi.org/10.3390/polym14235331.

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In the current work, atom transfer radical polymerization-induced self-assembly (ATRP PISA) phase diagrams were obtained by the means of dissipative particle dynamics simulations. A fast algorithm for determining the equilibrium morphology of block copolymer aggregates was developed. Our goal was to assess how the chemical nature of ATRP affects the self-assembly of diblock copolymers in the course of PISA. We discovered that the chain growth termination via recombination played a key role in determining the ATRP PISA phase diagrams. In particular, ATRP with turned off recombination yielded a

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Münz, Holger, and Martin Peschka. "Principal component analysis of refractive index spaces: From glass properties to residual colour prediction." EPJ Web of Conferences 309 (2024): 03019. http://dx.doi.org/10.1051/epjconf/202430903019.

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Traditionally glass dispersion is described by Abbe numbers and partial dispersions, and colour correction is explained and visualized e.g. with Pg,F- and Herzberger diagrams. We have recently developed an alternative approach to colour analysis and colour correction based on principal component analysis of normalized refractive index data. The resulting diagrams can be used not only for glass selection, but also for quantitative prediction of partial refractive powers and residual colour aberrations. The method is intrinsically model-free, robust to the choice of dataset and wavelengths, and

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Skirvin, S. J., V. Fedun, and G. Verth. "I. The effect of symmetric and spatially varying equilibria and flow on MHD wave modes: slab geometry." Monthly Notices of the Royal Astronomical Society 504, no. 3 (2021): 4077–92. http://dx.doi.org/10.1093/mnras/stab1143.

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ABSTRACT Realistic theoretical models of magnetohydrodynamic wave propagation in the different solar magnetic configurations are required to explain observational results, allowing magnetoseismology to be conducted and provide more accurate information about local plasma properties. The numerical approach described in this paper allows a dispersion diagram to be obtained for any arbitrary symmetric magnetic slab model of solar atmospheric features. This proposed technique implements the shooting method to match necessary boundary conditions on continuity of displacement and total pressure of t

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Çakir, Özcan, and Yusuf Arif Kutlu. "A New Method for Selecting the Phase and Group Velocity Dispersion Curves of Rayleigh and Love Surface Waves: Real Data Case of Central Anatolia, Turkey (Türkiye)." Indonesian Journal of Earth Sciences 3, no. 2 (2023): A795. http://dx.doi.org/10.52562/injoes.2023.795.

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We propose a new method to select the dispersion curve of Rayleigh and Love surface waves obtained from local and regional earthquakes. This method is efficient for the crustal tomography studies and the Central Anatolia is chosen to test it. The single-station method utilizing both seismograms and accelerograms is used for the group velocities from local earthquakes while the two-station approach utilizing the cross correlograms is employed for the group and phase velocities using both local and regional earthquakes. The proposed method is made of two stages. The first stage based on the mult

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Panajotovic, Aleksandra, Daniela Milovic, Anjan Biswas, and Essaid Zerrad. "Influence of Even-Order Dispersion on Super-Sech Soliton Transmission Quality under Coherent Crosstalk." Research Letters in Optics 2008 (2008): 1–5. http://dx.doi.org/10.1155/2008/613986.

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The transmission speed of optical network strongly depends on the impact of higher order dispersion. In presence of coherent crosstalk, which cannot be otherwise controlled by optical filtering, the impact of higher order dispersions becomes more pronounced. In this paper, the general expressions, that describe pulse deformation due to second- and fourth-order dispersions in a single-mode fiber, are given. The responses for such even-order dispersions, in presence of coherent crosstalk, are characterized by waveforms with long trailing edges. The transmission quality of optical pulses, due to

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Li, Yandong, Tongsheng Zhang, Yefeng Feng, Chengjun Liu, and Maofa Jiang. "Liquid Regions of Lanthanum-Bearing Aluminosilicates." Materials 13, no. 2 (2020): 450. http://dx.doi.org/10.3390/ma13020450.

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The Al2O3-SiO2, La2O3-Al2O3, and La2O3-SiO2 binary phase diagrams were estimated by Redlich–Kister expression. La4.67Si3O13 (=La4.67(SiO4)3O) was introduced to improve the existing phase diagrams. The Al2O3-SiO2-La2O3 ternary phase diagram extrapolated by Kohler method was optimized. Then, the liquidus of Al2O3-SiO2-La2O3 system at 1600 °C was compared with Al2O3-SiO2-RE2O3 (RE = Rare Earth Elements) systems and experimental results in other literature. The high temperature experiments were conducted in the tube furnace at 1500 °C. Then the field emission scanning electron microscope (FE-SEM),

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Alizadeh, Mohammad Ali, Fatemeh Zehtabchi, and Ali Ashraf Jafari. "Evaluation of dry matter yield and essential oil production in 84 accessions of Tanacetum polycephalum Sch.Bip. through multivariate analyses." Acta Agronómica 67, no. 1 (2018): 179–85. http://dx.doi.org/10.15446/acag.v67n1.59028.

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Para investigar la diversidad y explicar las relaciones del rendimiento de aceite esencial con rasgos morfológicos, 84 poblaciones de T. polycephalum fueron sembradas en el campo utilizando diseño de bloques completos al azar (BCA) con tres réplicas en el Instituto de Investigación de Bosques y Pastizales, Teherán, Irán en 2013-2014. Los datos fueron colectados para la fecha de floración, días de grado de crecimiento (DGC), número de tallos, altura de planta, rendimiento de materia seca (MS), porcentaje de aceite esencial y rendimiento de aceite esencial. Las relaciones entre las característic

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Marra Da Silva Ribeiro, Luiz Henrique. "Computing dispersion relations with modal analysis methods." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 267, no. 1 (2023): 110–19. http://dx.doi.org/10.3397/no_2023_0021.

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Dispersion diagrams depicting dispersion relations are usually computed from a periodic structure single unit cell using either analytical methods, such as the plane wave expansion (PWE) method, or numerical methods, such as the wave finite element (WFE) method, by applying Bloch-Floquet periodic boundary conditions. However, the latter is still not available in most commercial FE codes. In this work, we propose a method to compute the dispersion diagram using standard modal analysis tools available in FE commercial codes currently used for structural analysis. We show that if a metastructure

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Angel Vargas Toledo, Miguel, Charlotte Monserrat Llanes Chiquini, Carlos Alberto Perez Canul, Giselle Guillermo Chuc, and Josue Dzib Cambranis. "LA INFLUENCIA DE LA LOGICA DOMINANTE Y LA ORIENTACION EMPRESARIAL EN EL DESEMPENO EMPRESARIAL Y SU CORRELACION." International Journal of Advanced Research 10, no. 10 (2022): 1473–88. http://dx.doi.org/10.21474/ijar01/15626.

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The present study establishes the relationship between Entrepreneurial Orientation and Dominant Logic to the overall performance of a business. Thecorrelation between such constructs is established throughout a multiple regression model.The sample is not probabilistic, we searched for 3 specific characteristics: small companies, older than 3 years, in the retail industry and located in the Yucatan, Peninsula. The processing of information is completed throughout exploratory research of correlational type using a dispersion diagram. La investigacion presentada establece la relacion entre la Ori

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Kyeremateng, Samuel O., Kristin Voges, Stefanie Dohrn, et al. "A Hot-Melt Extrusion Risk Assessment Classification System for Amorphous Solid Dispersion Formulation Development." Pharmaceutics 14, no. 5 (2022): 1044. http://dx.doi.org/10.3390/pharmaceutics14051044.

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Several literature publications have described the potential application of active pharmaceutical ingredient (API)–polymer phase diagrams to identify appropriate temperature ranges for processing amorphous solid dispersion (ASD) formulations via the hot-melt extrusion (HME) technique. However, systematic investigations and reliable applications of the phase diagram as a risk assessment tool for HME are non-existent. Accordingly, within AbbVie, an HME risk classification system (HCS) based on API–polymer phase diagrams has been developed as a material-sparing tool for the early risk assessment

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Minic, D., Y. Du, M. Premovic, et al. "Experimental and thermodynamic description of ternary Bi-Cu-Ga system." Journal of Mining and Metallurgy, Section B: Metallurgy 53, no. 3 (2017): 189–201. http://dx.doi.org/10.2298/jmmb170505017m.

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Phase diagram of the Bi-Cu-Ga ternary system has been investigated experimentally with 27 alloys and analytically by using a Calphad method. Thirteen annealed alloys at 200?C were investigated by using scanning electron microscopy (SEM) with energy dispersive spectrometry (EDS), and X-ray powder diffraction (XRD) methods. Temperatures of phase transformation were determined with 14 alloys which are lying along three vertical sections Bi-Cu0.5Ga0.5, Cu-Bi0.5Ga0.5 and Ga-Bi0.5Cu0.5 by using differential thermal analysis (DTA). Based on the experimental result and by using Calphad method, ternary

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Barth, Tilmann, Johannes Wiedemann, Thomas Roloff, et al. "Experimental determination of dispersion diagrams over large frequency ranges for guided ultrasonic waves in fiber metal laminates." Smart Materials and Structures 32, no. 8 (2023): 085011. http://dx.doi.org/10.1088/1361-665x/ace0ea.

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Abstract Fiber metal laminates (FMLs) are of high interest for lightweight structures as they combine the advantageous material properties of metals and fiber-reinforced polymers (FRPs). However, low-velocity impacts can lead to complex internal damage. Therefore, structural health monitoring with guided ultrasonic waves (GUWs) is a methodology to identify such damage. Numerical simulations form the basis for corresponding investigations, but experimental validation of dispersion diagrams over a wide frequency range is hardly found in the literature. In this work the dispersive relation of GUW

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Yutani, Naomichi, Yoshiki Toba, and Keiichi Wada. "Apparent Effect of Dust Extinction on the Observed Outflow Velocity of Ionized Gas in Galaxy Mergers." Astrophysical Journal 961, no. 1 (2024): 68. http://dx.doi.org/10.3847/1538-4357/ad0dfc.

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Abstract In this study, we examine photoionization outflows during the late stages of galaxy mergers, with a specific focus on the relation between the observed velocity of outflowing gas and the apparent effects of dust extinction. We used the N-body/smoothed particle hydrodynamics code ASURA for galaxy merger simulations. These simulations concentrated on identical galaxy mergers featuring supermassive black holes of 108 M ⊙ and gas fractions of 30% and 10%. From the simulation data, we derived velocity and velocity dispersion diagrams for the active galactic nuclei (AGN)-driven ionized outf

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Philip, G. M., C. Gregory Skilbeck, and D. F. Watson. "Algebraic dispersion fields on ternary diagrams." Mathematical Geology 19, no. 3 (1987): 171–81. http://dx.doi.org/10.1007/bf00897745.

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Smith, Ronald B. "Regime Diagrams for K-Theory Dispersion." Boundary-Layer Meteorology 139, no. 3 (2011): 501–19. http://dx.doi.org/10.1007/s10546-011-9594-4.

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Botirov, Farkhod, and Salakhutdin Nuritdinov. "Nonlinear cosmogony of the spiral galaxy bulges." Open Astronomy 30, no. 1 (2021): 144–48. http://dx.doi.org/10.1515/astro-2021-0019.

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Abstract In this paper, we develop an early idea of one of the authors (Nuritdinov 1992a,b), who was the first to propose the mechanism of instability of the warp perturbation mode on the background of a nonstationary disk. For this aim, we have studied a model of a nonlinearly non-stationary self-gravitating disk with an anisotropic velocity diagram. The model has a composite nature, or rather, it is a superposition of isotropic and anisotropic states of the disk. In the general case, it is obtained a nonstationary analogue of the dispersion equation of this composite model. We have also inve

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Zaini, Erizal, Rahmi x. Rahmi Nofita, Salman, and Irna Kurniati. "KARAKTERISASI FISIKOKIMIA DAN LAJU DISOLUSI DISPERSI PADAT IBUPROFEN DENGAN PEMBAWA POLIETILENGLIKOL 6000." Jurnal Riset Kimia 4, no. 1 (2015): 25. http://dx.doi.org/10.25077/jrk.v4i1.63.

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Solid dispersions of the antiinflamation drug ibuprofen and polyethylene glycol 6000 (PEG 6000) were prepared by the melting method in order to increase the dissolution rates of this poorly water-soluble compound. The temperature/composition phase diagram of binary system was analyzed by termal analysis hot-stage microscopy, showing an eutectic formation. Polarized light hot stage microscopy and X-ray-powder diffraction confirmed, that solid dispersion technique decrease the crystalliny of ibuprofen after melting and solidifying of a 4/6 (w/w) mixture of ibuprofen and polyethylene glycol 6000

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Movchan, A. B., N. V. Movchan, and R. C. McPhedran. "Bloch–Floquet bending waves in perforated thin plates." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 463, no. 2086 (2007): 2505–18. http://dx.doi.org/10.1098/rspa.2007.1886.

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This paper presents a mathematical model describing propagation of bending waves in a perforated thin plate. It is assumed that the holes are circular and form a doubly periodic square array. A spectral problem for the biharmonic operator is formulated in a unit cell containing a single defect, and its analytical solution is constructed using a multipole method. The overall system for the coefficients in the multipole expansion is then solved numerically. We generate dispersion diagrams for the two cases where the boundaries of holes are either clamped or free. We show that in the clamped case

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Worasucheep, Duang-rudee, Wanee Srisuwarat, and Jirawut Akaranuchat. "Design and Performance of 10 Gb/s Optical Receiver in 50-GHz DWDM Transmission over 40-km SSMF." ECTI Transactions on Electrical Engineering, Electronics, and Communications 9, no. 1 (2010): 157–68. http://dx.doi.org/10.37936/ecti-eec.201191.172468.

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This paper describes the design of 10 Gb/s optical receiver, which consists of an Avalanche Photo Detector (APD) and a Clock & Data Recovery (CDR) circuit. All components are successfully integrated onto the 4-layered FR-4 PCB, using two types of signal paths: di®erential microstrip and single-ended CB-CPW. Their dimensions are optimally chosen for matching impedance, according to the ADS simulations. The receivers performance has been evaluated under 3 impairments: jitter, interchannel crosstalk and fiber dispersion. The Periodic Jitter (PJ) is added to analyze histograms and measure the

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Guevara, Mairis, Ronald Mercado, Katty Vega, Antonio Cardenas, and Ana Forgiarini. "Rheology and Phase Behavior of Surfactant–Oil–Water Systems and Their Relationship with O/W Nano-Emulsion’s Characteristics Obtained by Dilution." Nanomanufacturing 3, no. 1 (2023): 20–35. http://dx.doi.org/10.3390/nanomanufacturing3010002.

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In order to study the relationship between the rheology of a surfactant’s concentrated dispersions and the oil and water liquid crystals from which O/W nanoemulsions (NEs) can be produced by water dilution, the phase diagram of a model SOW (surfactant–oil–water) system was constructed. The dispersion’s compositions to be characterized by rheology were chosen in the diagram’s regions that contain liquid crystal phases. For this, the dilution lines S/O = 25/75, 55/45, and 70/30 with a water content of 20 and 40 wt% (corresponding to surfactant concentrations between 15 and 55 wt%) were chosen. B

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Krowne, Clifford M., and Maurice Daniel. "Electromagnetic Field Behavior in Dispersive Isotropic Negative Phase Velocity/Negative Refractive Index Guided Wave Structures Compatible with Millimeter-Wave Monolithic Integrated Circuits." Journal of Nanomaterials 2007 (2007): 1–11. http://dx.doi.org/10.1155/2007/54568.

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A microstrip configuration has been loaded with a dispersive isotropic left-handed medium (LHM) substrate and studied regarding its high frequency millimeter-wave behavior near 100 GHz. This has been accomplished using a full-wave integral-equation anisotropic Green's function code configured to run for isotropy. Never before seen electromagnetic field distributions are produced, unlike anything found in normal media devices, using this ab initio solver. These distributions are made in the cross-sectional dimension, with the field propagating in the perpendicular direction. It is discovered th

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Franco-Correa, Julio Cesar, Enrique Martínez-Franco, Celso Eduardo Cruz-González, Juan Manuel Salgado-López, and Jhon Alexander Villada-Villalobos. "Tailored Time–Temperature Transformation Diagram for IN718 Alloy Obtained via Powder Bed Fusion Additive Manufacturing: Phase Behavior and Precipitation Dynamic." Materials 16, no. 23 (2023): 7280. http://dx.doi.org/10.3390/ma16237280.

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Experimental and computational approaches were used to study the microstructure of IN718 produced via powder bed fusion additive manufacturing (PBF-AM). The presence, chemical composition, and distribution of stable and metastable phases (γ′′, δ, MC, and Laves) were also analyzed. The information obtained from the microstructural study was used to construct a tailored time–temperature transformation (TTT) diagram customized for additive manufacturing of IN718. Experimental techniques, including differential scanning calorimetry (DSC), scanning electron microscopy, energy dispersive X-ray spect

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Melikhov, Dmitri. "Analytic Properties of Triangle Feynman Diagrams in Quantum Field Theory." Particles 3, no. 1 (2020): 99–113. http://dx.doi.org/10.3390/particles3010009.

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We discuss dispersion representations for the triangle diagram F ( q 2 , p 1 2 , p 2 2 ) , the single dispersion representation in q 2 and the double dispersion representation in p 1 2 and p 2 2 , with special emphasis on the appearance of the anomalous singularities and the anomalous cuts in these representations.

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Clifton, Timothy, and Joe Zuntz. "Hubble diagram dispersion from large-scale structure." Monthly Notices of the Royal Astronomical Society 400, no. 4 (2009): 2185–99. http://dx.doi.org/10.1111/j.1365-2966.2009.15616.x.

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Smith, Duane H., John S. Reckley, and Gregory K. Johnson. "Emulsion mixtures and the dispersion morphology diagram." Journal of Colloid and Interface Science 151, no. 2 (1992): 383–91. http://dx.doi.org/10.1016/0021-9797(92)90486-6.

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Wang, Binying, Jinxing Liu, A. K. Soh, and Naigang Liang. "On band gaps of nonlocal acoustic lattice metamaterials: a robust strain gradient model." Applied Mathematics and Mechanics 43, no. 1 (2022): 1–20. http://dx.doi.org/10.1007/s10483-021-2795-5.

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AbstractWe have proposed an “exact” strain gradient (SG) continuum model to properly predict the dispersive characteristics of diatomic lattice metamaterials with local and nonlocal interactions. The key enhancement is proposing a wavelength-dependent Taylor expansion to obtain a satisfactory accuracy when the wavelength gets close to the lattice spacing. Such a wavelength-dependent Taylor expansion is applied to the displacement field of the diatomic lattice, resulting in a novel SG model. For various kinds of diatomic lattices, the dispersion diagrams given by the proposed SG model always ag

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Ita, Yoshifusa, Takashi Onaka, and Daisuke Kato. "AKARI IRC survey of the Large Magellanic Cloud: A new feature in the infrared color—magnitude diagram." Proceedings of the International Astronomical Union 4, S256 (2008): 9–13. http://dx.doi.org/10.1017/s1743921308028184.

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AbstractWe observed an area of 10 deg2 of the Large Magellanic Cloud using the Infrared Camera on board AKARI. The observations were carried out using five imaging filters (3, 7, 11, 15, and 24 μm) and a dispersion prism (2 − 5 μm, λ/Δλ ~ 20) equipped in the IRC. The 11 and 15 μm data, which are unique to AKARI IRC, allow us to construct color-magnitude diagrams that are useful to identify stars with circumstellar dust. We found a new sequence in the color-magnitude diagram, which is attributed to red giants with luminosity fainter than that of the tip of the first red giant branch. We suggest

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Mongondry, Philippe, Jean François Tassin, and Taco Nicolai. "Revised state diagram of Laponite dispersions." Journal of Colloid and Interface Science 283, no. 2 (2005): 397–405. http://dx.doi.org/10.1016/j.jcis.2004.09.043.

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Kuang, Lulin, Yu Lan, Huaisong Zhao, and Shiping Feng. "High-energy magnetic excitations in cuprate superconductors." International Journal of Modern Physics B 29, no. 25n26 (2015): 1542001. http://dx.doi.org/10.1142/s0217979215420011.

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In this paper, the high-energy magnetic excitations in cuprate superconductors are studied based on the kinetic energy driven superconducting mechanism. The spin self-energy is evaluated explicitly in terms of the collective charge carrier modes in the particle–hole and particle–particle channels, and employed to calculate the dynamical spin structure factor. Our results show the existence of damped but well-defined dispersive spin excitations in the whole doping phase diagram. In particular, the charge carrier doping has a more modest effect on the high-energy spin excitations, and then the h

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Pan, Zhu, Yong Du, and Baiyun Huang. "Experimental investigation and thermodynamic calculation in the Al–Be–Si ternary system." International Journal of Materials Research 96, no. 11 (2005): 1301–7. http://dx.doi.org/10.1515/ijmr-2005-0227.

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Abstract A thermodynamic optimization for the Be– Si system has been performed using the CALPHAD (CALculation of PHAse Diagrams) technique applied to newly measured phase diagram data. The description for this binary system is then combined with the thermodynamic parameters in the Al –Be and Al –Si systems to synthesize a thermodynamic description for the Al –Be –Si ternary system. To verify the reliability of the extrapolated ternary phase diagrams, 11 decisive ternary alloys are prepared by are melting Al, Be and Si pieces and annealing at 530 °C for 8 days. Water-quenched samples are analyz

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Eid, Mahmoud M. A., and Ahmed Nabih Zaki Rashed. "Fixed scattering section length with variable scattering section dispersion based optical fibers for polarization mode dispersion penalties." Indonesian Journal of Electrical Engineering and Computer Science 21, no. 3 (2021): 1540–47. https://doi.org/10.11591/ijeecs.v21.i3.pp1540-1547.

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This study has clarified the fixed scattering section length with variable scattering section dispersion based optical fibers for polarization mode dispersion penalties at high data rates. The max signal power/min. noise power is simulated against time after fiber length of 500 km with various scattering section dispersion. The overall total light power is simulated after fiber length of 500 km with various scattering section dispersion. In addition to the overall total electrical power is clarified through APD receiver at fiber length of 500 km with various scattering section dispersion. Eye

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