Search Results - (( time source analysis ) OR ( time frequency analysis ))

Frequency–Time Domain Analysis Based on Electrochemical Noise of Dual-Phase (DP) and Ferrite–Bainite (FB) Steels in Chloride Solutions for Automotive Applications by Almeraya Calderón, Facundo, Montoya Rangel, Marvin, Nieves Mendoza, Demetrio, Jáquez Muñoz, Jesús Manuel, Baltazar Zamora, Miguel Ángel, Landa Ruiz, Laura, Lara Banda, María del Refugio, Maldonado Bandala, Erick, Estupiñan López, Francisco Humberto, Gaona Tiburcio, Citlalli

“…At room temperature, the steels were immersed in NaCl, CaCl2, and MgCl2 solutions and were studied by frequency–time domain analysis using wavelet decomposition, Hilbert–Huang analysis, and recurrence plots (RPs) related to the corrosion process and noise impedance (Zn). …”
Get full text

¿Existe memoria larga en mercados bursátiles, o depende del modelo, periodo o frecuencia? (Is there Long Memory in Stock Markets, or Does it Depend on the Model, Period or Frequenc... by Salazar-Núñez, Héctor F., Venegas-Martínez, Francisco, Calderón-Villareal, Cuahutémoc

Get full text

Estimation of feed level of methionine by Litopenaeus vannamei (Boone) using covalently-attached and crystalline sources in low-protein semi-purified diets by M. Fox, Joe, L. Lawrence, Addison, Patnaik, Susmita, Forster, Ian, Yong Ju, Zhi, Dominy, Warren

“…Synthetic sources of methionine are commonly used to supplement plant protein-based aquaculture feeds. …”
Get full text

Electrochemical Noise Analysis: An Approach to the Effectivity of Each Method in Different Materials by Jáquez Muñoz, Jesús Manuel, Gaona Tiburcio, Citlalli, Méndez Ramírez, Ce Tochtli, Martínez Ramos, Cynthia, Baltazar Zamora, Miguel Ángel, Santiago Hurtado, Griselda, Estupiñan López, Francisco Humberto, Landa Ruiz, Laura, Nieves Mendoza, Demetrio, Almeraya Calderón, Facundo

“…The objective of this research is to characterize by EN technique different aeronautical alloys (Al, Ti, steels, and superalloys) using different analysis methods such as time domain (visual analysis, statistical), frequency domain (power spectral density (PSD)), and frequency–time domain (wavelet decomposition, Hilbert Huang analysis, and recurrence plots (RP)) related to the corrosion process. …”
Get full text

Análisis de armónicas dinámicas con filtros de respuesta impulsional finita diseñados con O-splines by De la O Serna, José Antonio

Subjects: “…time-frequency analysis…”
Get full text

Replication of Integrative Data Analysis for Adipose Tissue Dysfunction, Low-Grade Inflammation, Postprandial Responses and OMICs Signatures in Symptom-Free Adults by Gallegos Cabriales, Esther Carlota, Rodríguez Ayala, Ernesto, Laviada Molina, Hugo A., Nava González, Edna Judith, Salinas Osornio, Rocío A., Orozco, Lorena, Leal Berumen, Irene, Castillo Pineda, Juan Carlos, González López, Laura, Escudero Lourdes, Claudia, Cornejo Barrera, Judith, Escalante Araiza, Fabiola, Huerta Ávila, Eira E., Buenfil Rello, Fatima A., Peschard, Vanessa Giselle, Silva, Eliud, Veloz Garza, Rosa A., Martínez Hernández, Angélica, Barajas Olmos, Francisco M., Molina Segui, Fernanda, Gonzalez Ramirez, Lucia, Arjona Villicaña, Ruy D., Hernandez Escalante, Victor M., Gaytan Saucedo, Janeth F., Vaquera, Zoila, Acebo Martinez, Mónica Lucía, Murillo Ramirez, Areli, Diaz Tena, Sara P., Figueroa Nuñez, Benigno, Valencia Rendón, Melesio E., Garzon Zamora, Rafael, Viveros Paredes, Juan Manuel, Valdovinos Chávez, Salvador B., Comuzzie, Anthony G., Haack, Karin, Thorsell, Ashley A., Han, Xianlin, Cole, Shelley A., Bastarrachea, Raúl A.

Get full text

Electrochemical Noise Analysis Using Experimental Chaos Theory, Power Spectral Density and Hilbert–Huang Transform in Anodized Aluminum Alloys in Tartaric–Phosphoric–Sulfuric Acid... by Martínez Ramos, Cynthia, Olguín Coca, Javier, López León, Luis Daimir, Gaona Tiburcio, Citlalli, Lara Banda, María del Refugio, Maldonado Bandala, Erick, Castañeda Robles, Ivan, Jáquez Muñoz, Jesús Manuel, Cabral Miramontes, José Ángel, Nieves Mendoza, Demetrio, Almeraya Calderón, Facundo

“…In the EN, three methods of data analysis were used: the time domain analysis (chaos analysis: application of Lyapunov exponent and dimension correlation), the frequency domain analysis (power spectral density, PSD), and the time–frequency domains analysis (Hilbert–Huang transform, HHT). …”
Get full text

Assessment of nutrient allocation and metabolic turnover rate in Pacific white shrimp Litopenaeus vannamei co-fed live macroalgae Ulva clathrata and inert feed: dual stable isotope... by Gamboa Delgado, Julián, Peña Rodríguez, Alberto, Ricque Marie, Denis, Cruz Suárez, Lucía Elizabeth

Get full text

Análisis multidimensional de los procesos electorales en Latinoamérica by Muñiz, Carlos, Riorda, Mario

Get full text

El romance medieval: análisis del amor cortesano del medievo aplicado en Vita Nuova, de Dante Alighieri by Díaz Delgado, Beatrice Akasha

Get full text

Clustering of Rainfall Stations in RH-24 Mexico Region Using the Hurst Exponent in Semivariograms by Benavides Bravo, Francisco Gerardo, Almaguer Martínez, Francisco Javier, Soto Villalobos, Roberto, Tercero Gómez, Víctor, Morales Castillo, Javier

“…Using the semivariograms, the Hurst exponent was obtained and used as an input to perform a cluster analysis of rainfall stations. Groups of homogeneous samples that might be useful in a regional frequency analysis were obtained through the process.…”
Get full text

Conceptual Design of an Unmanned Fixed-Wing Aerial Vehicle Based on Alternative Energy by Escobar Ruiz, Alan Gerardo, López Botello, Omar Eduardo, Reyes Osorio, Luis Arturo, Zambrano Robledo, Patricia del Carmen, Amézquita Brooks, Luis Antonio, García Salazar, Octavio

“…This paper focuses on the aerodynamics and design of an unmanned aerial vehicle (UAV) based on solar cells as a main power source. The procedure includes three phases: the conceptual design, preliminary design, and a computational fluid dynamics analysis of the vehicle. …”
Get full text

International migration and transitions to adulthood in Mexico by Avila Sánchez, María de Jesús, Jáuregui Díaz, José Alfredo, Pizarro Hernández, Karina

“…This research studies the process of transition to adulthood of young Mexicans with migratory experience in the United State and the effect that this displacement had on five transitional events using event history models of continuous time - history history analysis-, using for its elaboration as primary source of information the National Survey of the Youth of the year 2010. …”
Get full text

Use of Electrochemical Noise for the Study of Corrosion by Passivated CUSTOM 450 and AM 350 Stainless Steels by Almeraya Calderón, Facundo, Villegas Tovar, José Miguel, Lara Banda, María del Refugio, Jáquez Muñoz, Jesús Manuel, Estupiñan López, Francisco Humberto, Gaona Tiburcio, Citlalli

“…Two methods of data analysis were applied concerning EN: the domain of frequencies (power spectral density, PSD) and the time–frequency domain (Hilbert-Huang Transform). …”
Get full text

Migración internacional y transiciones a la adultez en México by Avila Sánchez, María de Jesús, Jáuregui Díaz, José Alfredo, Pizarro Hernández, Karina

“…Abstract International migration and transitions to adulthood in Mexico This research studies the process of transition to adulthood of young Mexicans with migratory experience in the United State and the effect that this displacement had on five transitional events using event history models of continuous time - history history analysis-, using for its elaboration as primary source of information the National Survey of the Youth of the year 2010. …”
Get full text

Electrochemical Corrosion of Titanium and Titanium Alloys Anodized in H2SO4 and H3PO4 Solutions by Jáquez Muñoz, Jesús Manuel, Gaona Tiburcio, Citlalli, Chacón Nava, José G., Cabral Miramontes, José Ángel, Nieves Mendoza, Demetrio, Maldonado Bandala, Erick, Delgado, Anabel D., Flores de los Ríos, Juan Pablo, Bocchetta, Patrizia, Almeraya Calderón, Facundo

“…Regarding EN, two methods of data analysis were used: the frequency domain (power spectral density, PSD) and time-frequency domain (discrete wavelet transform). …”
Get full text

Metabolomic and biodirected phytochemical study of Hechtia glomerata, evaluation of its antibacterial and cytotoxic activity, and determination of the mechanism of action of one ac... by Stefani, Tommaso

“…Purpose of the study: The pharmaceutical industry has left the active research and development of new antibiotics, and the lack of new molecules caused the antibacterial resistance to become an even more threatening issue. At the same time cancer resistance is also thriving, making old chemotherapeutic drugs useless. …”
Get full text

Metabolomic and biodirected phytochemical study of Hechtia glomerata, evaluation of its antibacterial and cytotoxic activity, and determination of the mechanism of action of one ac... by Stefani, Tommaso

“…Purpose of the study: The pharmaceutical industry has left the active research and development of new antibiotics, and the lack of new molecules caused the antibacterial resistance to become an even more threatening issue. At the same time cancer resistance is also thriving, making old chemotherapeutic drugs useless. …”
Get full text

Los precios del petróleo y la actividad económica en México: Oil Prices and Economic Activity in Mexico by Ruiz-Porras, Antonio, Anguiano-Pita, Javier Emmanuel

Get full text

Effect of heat treatment on the electrochemical behavior of AA2055 and AA2024 alloys for aeronautical applications by Rivera Cerezo, Heriberto, Gaona Tiburcio, Citlalli, Cabral Miramontes, José Ángel, Bautista Margulis, Raúl German, Nieves Mendoza, Demetrio, Maldonado Bandala, Erick, Estupiñan López, Francisco Humberto, Almeraya Calderón, Facundo

“…The aim of this work was to investigate the influence of different heat treatments on the electrochemical corrosion behavior of the alloys AA2055 and AA2024 in the presence of three different electrolytes at room temperature, using an electrochemical noise (EN) technique in accordance with the ASTM-G199 standard. In the time domain, the polynomial method was employed to obtain the noise resistance (Rn), the localization index (IL), skewness, and kurtosis, and in the frequency domain, employing power spectral density analysis (PSD). …”
Get full text