Results 41 to 50 of about 462,048 (230)

Hepaticogastrostomía guíada por ultrasonido endoscópico, experiencia en Colombia: serie de casos

open access: yesRevista Colombiana de Gastroenterología
La principal herramienta para la obstrucción biliar maligna es la descompresión de la vía biliar, mediante la colangiopancreatografía retrógrada endoscópica (CPRE) con colocación de stent, la cual en un gran porcentaje de los casos es satisfactoria; sin
Faruk Hernández Sampayo   +2 more
doaj   +1 more source

Mediastinal Parathyroid Adenoma and Brown Tumors

open access: yesWorld Journal of Nuclear Medicine, 2012
In this report, we describe a rare case of brown tumor and mediastinal parathyroid adenoma. This report emphasizes the value of radionuclide scintigraphy in the setting of persistent disease following parathyroid surgery.
P. Bernal, G. Ucros, A. Mejia
doaj   +1 more source

Enhancing Strength and Electrical Conductivity in Al–Zr–Sc Conductor Alloys Through Sn and Sr Microalloying and Two‐Step Aging Treatment

open access: yesAdvanced Engineering Materials, EarlyView.
Trace additions of Sn and Sr combined with a two‐step aging treatment are shown to enhance the microstructure and performance of Al–Zr–Sc conductor alloys. Strength and electrical conductivity increase concurrently through accelerated precipitation of fine Al3(Sc, Zr) precipitates and improved dislocation resistance, offering a cost‐effective pathway ...
Quan Shao   +3 more
wiley   +1 more source

Análisis del Comportamiento Energético de la Ciudad de Santa Fe

open access: yesTecnología y Ciencia, 2018
La energía juega un rol importante en el desarrollo de un país, un conocimiento amplio de la situación energética permite un ordenamiento de todos los sectores de la economía a través de la implementación de políticas energéticas.
Dianela G. Gonzalez   +1 more
doaj  

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios   +5 more
wiley   +1 more source

Modelo de Ingreso de Datos a la Herramienta de Costos del Sistema de Transporte Público de Pasajeros

open access: yesTecnología y Ciencia, 2018
Las pequeñas y medianas ciudades se enfrentan a una serie de dificultades a la hora de administrar y manejar su sistema de transporte urbano. Esta problemática se debe a que no cuentan con los métodos necesarios para analizar y administrar los recursos ...
Melisa M. Batistela, Luciana Venanzi
doaj  

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth   +6 more
wiley   +1 more source

Síndrome de desacondicionamiento físico en el paciente en estado crítico y su manejo.

open access: yesMedicina, 2001
<p>En este trabajo describimos las principales manifestaciones clínicas del Síndrome de Desacondicionamiento Físico a que estén expuestos los pacientes en estado crítico o con inmovilización prolongada en cama y presentamos el programa de ...
Jorge Pardo Ruiz, Jorge Luis Pardo
doaj  

Step-by-step combination of 99mTc and ICG with endoscopic near infrared cameras in SLN mapping early-stage vulvar cancer

open access: yesGynecologic Oncology Reports
Vulvar cancer guidelines recommend inguinal sentinel lymph node (SLN) biopsy as the standard of care for patients with unifocal squamous cell carcinoma tumors less than 4 cm and clinically non-suspicious nodes in the groin [1].
A. Rafael Guijarro-Campillo   +6 more
doaj   +1 more source

Composition‐Tuned Enhancement of the Anomalous Nernst Effect in FeCo–Pt Thin Films on Rigid and Flexible Substrates

open access: yesAdvanced Engineering Materials, EarlyView.
Disordered (Fe50Co50)1−xPtx thin films exhibit a pronounced anomalous Nernst effect (ANE) with a strong composition dependence on both rigid and flexible substrates. The transverse thermoelectric response peaks near 22.5 at.% Pt, accompanied by enhanced αxy/σxy scaling, thermal transport, and ANE sensitivity.
Mojtaba Mohammadi   +2 more
wiley   +1 more source

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