Search Results - "Valencia, Joaquı́n"

Equilibrium swelling properties of poly( N-vinylimidazole-co-sodium styrenesulfonate) hydrogels by Valencia, Joaquı́n, Piérola, Inés F.

“…Hydrogels of N-vinylimidazole (VI) and sodium styrenesulfonate (SSS) were synthesized by radical crosslinking copolymerization. Contrary to expectation, for…”
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Calculation of precipitation and seismicity thresholds as triggers for mass movements in the region of Bucaramanga, Colombia by Ortiz, Joaquín Andrés Valencia, Martínez-Graña, Antonio Miguel

“…•Calculation of precipitation as trigger.•Statistical analysis of seismic activity.•Analysis of temporality of triggers.•Definition of precipitation and…”
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A neural network model applied to landslide susceptibility analysis (Capitanejo, Colombia) by Valencia Ortiz, Joaquín Andrés, Martínez-Graña, Antonio Miguel

“…The generation of landslide present in the municipality of Capitanejo (Santander-Colombia) is conditioned to lithological, structural and morphometric factors…”
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Hybrid Wideband Staircase Filters in Rectangular Waveguide With Enhanced Out-of-Band Response by Valencia Sullca, Joaquin F., Guglielmi, Marco, Cogollos, Santiago, Boria, Vicente E.

“…The objective of this article is to describe the design of a new family of wideband filters in a rectangular waveguide based on hybrid couplings and a…”
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Evaluation of Susceptibility by Mass Movements through Stochastic and Statistical Methods for a Region of Bucaramanga, Colombia by Valencia Ortiz, Joaquín Andrés, Martínez-Graña, Antonio Miguel, Méndez, Lenny Mejía

“…Mass movements are one of the hydrometeorological phenomena with the most negative impacts on the study area, and their evaluation through the calculation of…”
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DInSAR Multi-Temporal Analysis for the Characterization of Ground Deformations Related to Tectonic Processes in the Region of Bucaramanga, Colombia by Valencia Ortiz, Joaquín Andrés, Martínez-Graña, Antonio Miguel, Cabero Morán, María Teresa

“…The analysis of the degree of surface deformation can be a relevant aspect in the study of surface stability conditions, as it provides added value in the…”
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Evaluation of Mass Movement Hazard in the Shoreline of the Intertidal Complex of El Grove (Pontevedra, Galicia) by Valencia Ortiz, Joaquín Andrés, Nieto, Carlos Enrique, Martínez-Graña, Antonio Miguel

“…Knowledge of hazard conditions due to mass movements is one of the non-structural measures for risk management, urban planning, and protection of natural…”
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Zooplankton‐derived dissolved organic matter composition and its bioavailability to natural prokaryotic communities by De Corte, Daniele, Varela, Marta M., Louro, Angeles M., Bercovici, Sarah K., Valencia‐Vila, Joaquín, Sintes, Eva, Baltar, Federico, Rodríguez‐Ramos, Tamara, Simon, Meinhard, Bode, Antonio, Dittmar, Thorsten, Niggemann, Jutta

“…Zooplankton grazing onphytoplankton promotes the release of particulate and dissolved organic matter (DOM) into the water column and therefore plays a key role…”
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Evaluation of flood exposure in anthropic environments applied to different areas in the region of Bucaramanga, Colombia by Valencia Ortiz, Joaquín Andrés, Martínez-Graña, Antonio Miguel

“…Floods are natural conditions of the riverbeds, but these manifestations in recent decades have increased their frequency, duration and intensity led to a…”
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A New Family of Reconfigurable Waveguide Filters and Diplexers for High-Power Applications by Melgarejo, Juan Carlos, Ossorio, Javier, Cogollos, Santiago, Guglielmi, Marco, San-Blas, Angel Antonio, Valencia-Sullca, Joaquin F., Vidal, Ana, Tronser, Tillman, Boria, Vicente E.

“…In this paper, we discuss how the use of the recently developed modified tuning pin (MTP) can be extended to the design of filters and diplexers implemented in…”
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Global abundance of planktonic heterotrophic protists in the deep ocean by Pernice, Massimo C, Forn, Irene, Gomes, Ana, Lara, Elena, Alonso-Sáez, Laura, Arrieta, Jesus M, del Carmen Garcia, Francisca, Hernando-Morales, Victor, MacKenzie, Roy, Mestre, Mireia, Sintes, Eva, Teira, Eva, Valencia, Joaquin, Varela, Marta M, Vaqué, Dolors, Duarte, Carlos M, Gasol, Josep M, Massana, Ramon

“…The dark ocean is one of the largest biomes on Earth, with critical roles in organic matter remineralization and global carbon sequestration. Despite its…”
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Development of a Vibration Technique Based on Geometric Optimization for Fatigue Life Evaluation of Sandwich Composite Structures by Menegozzo, Marco, Just-Agosto, Frederick A., Serrano Acevedo, David, Shafiq, Basir, Cecchini, Andrés, Valencia Bravo, Joaquín M., Vaidya, Uday K.

“…A major obstacle to obtaining cost-effective experimental data on the fatigue life of sandwich panels is the prohibitive amount of time and cost required to…”
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Compact Dual-Band and Wideband Filters With Resonant Apertures in Rectangular Waveguide by Valencia Sullca, Joaquin F., Cogollos, Santiago, Boria, Vicente E., Guglielmi, Marco

“…The objective of this article is to describe a new family of microwave bandpass filters in the rectangular waveguide based on resonant apertures, which can be…”
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Interpretation of the polyelectrolyte and antipolyelectrolyte effects of poly(N-vinylimidazole-co-sodium styrenesulfonate) hydrogels by Valencia, Joaquín, Piérola, Inés F.

“…Hydrogels of N‐vinylimidazole (VI) and sodium styrenesulfonate (SSS) were synthesized in aqueous solution by radical crosslinking copolymerization with…”
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Morphometric and morphostructural analysis as a modeling tool in mass movement scenarios (Bucaramanga, Colombia) by Joaquín Andrés Valencia Ortiz, Antonio Miguel Martínez-Graña

“…The basin is its own environment and sensitive to changes of both natural origin (endogenous and exogenous) and anthropic factors. Due to these changes,…”
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Diagnosing Bile Duct Stones: Comparison of Unenhanced Helical CT, Oral Contrast-Enhanced CT Cholangiography, and MR Cholangiography by Soto, Jorge A, Alvarez, Oscar, Munera, Felipe, Velez, Sol M, Valencia, Joaquin, Ramirez, Nelson

“…In this investigation we compared the diagnostic performance of unenhanced helical CT, oral contrast-enhanced CT cholangiography, and MR cholangiography for…”
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Swelling kinetics of poly(N-vinylimidazole-co-sodium styrenesulfonate) hydrogels by Valencia, Joaquín, Piérola, Inés F.

“…Hydrogels of N‐vinylimidazole and sodium styrenesulfonate were synthesized by radical crosslinking copolymerization. Transient swelling measurements in water,…”
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A Probabilistic Graphical Model for Semi-Autogenous Grinding Processes by Valencia, Joaquin Videla, Vargas, Francisco

“…In the area of automation and process control, a pressing issue is the uncertainty in the dynamics of the SAG mill ore feeding process and the complexity in…”
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Design of Dual Stopband Filters for Interference Suppression by Sullca, Joaquin F. Valencia, Cogollos, Santiago, Boria, Vicente E., Guglielmi, Marco, Bastioli, Simone, Snyder, Richard

“…When a broad band receiving system is co-located with high power emitters, receiver saturation is a major issue. Rejection of the local high power signals with…”
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The OLGA-OLGIM staging and the interobserver agreement for gastritis and preneoplastic lesion screening: a cross-sectional study by Salazar, Beatriz E., Pérez-Cala, Tania, Gomez-Villegas, Sara Isabel, Cardona-Zapata, Laura, Pazos-Bastidas, Sebastián, Cardona-Estepa, Alejandra, Vélez-Gómez, Diego Enrique, Justinico-Castro, José Armando, Bernal-Cobo, Andrés, Dávila-Giraldo, Harold Adrián, Benítez-Guerra, Juan Carlos, Valencia-Cárdenas, Joaquín Tiberio, Ospina, Edgar de Jesús, Castaño-Llano, Rodrigo, Bravo, María Mercedes, Cataño-Correa, Juan Carlos, Zabaleta, Jovanny, Trespalacios-Rangel, Alba Alicia, Cock-Botero, Ana María, Roldán-Pérez, Miguel Ignacio, Martínez, Alonso

“…Stomach cancer (SC) incidence and mortality are relevant public health issues worldwide. In Colombia, screening for preneoplastic lesions (PNL) and the…”
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