Results 11 to 20 of about 3,195 (92)

Does invasion by armored catfish shift trophic ecology of native fishes? Evidence from stable isotope analysis

open access: yesEcology, Volume 104, Issue 5, May 2023., 2023
Abstract Popular as aquarium fish, armored catfishes from South America (Pterygoplichthys spp.) have been introduced and become invasive in tropical and subtropical regions worldwide. These ecosystem engineers can deplete basal resources (e.g., periphyton and detritus), with potential negative effects for native fauna. We studied the trophic ecology of
Yasmín Quintana   +2 more
wiley   +1 more source

Treatment of Infected Pseudoaneurysm of Femoral Artery after Vascular Closure Device Deployment: A Practical Solution

open access: yesCase Reports in Vascular Medicine, Volume 2012, Issue 1, 2012., 2012
Like other invasive procedures, percutaneous coronary interventions are associated with complications. Most common access site for these procedures is common femoral artery. Complications such as groin and retroperitoneal hematoma can be encountered as well as pseudoaneurysms, arteriovenous fistulas, acute arterial occlusion, and infection.
Predrag Matic   +6 more
wiley   +1 more source

Use of iterative algorithms to calculate the softening curve in concrete

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 2019
This paper presents an original procedure to determine the softening curve in concrete from a diametric Brazilian test and a three point bend test. An inverse procedure is proposed combining experimental results, numerical finite element computation and ...
F.J. Gómez   +3 more
doaj   +1 more source

Effect of nepheline syenite particle size on diametrical compression strength and reliability of extruded ceramic Raschig rings used in packed towers

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 2013
In order to understand the effect of nepheline syenite particle size on physico-chemical properties of ceramic Raschig rings, the fluxing agent was grinded at different milling times. The compositions were prepared by blending the illitic-kaolinitic clay
Salem, Amin, Rostami, Nazila
doaj   +1 more source

Aplicación de las superficies cónicas a la construcción de depósitos elevados

open access: yesInformes de la Construccion, 1964
Recientemente se han construido en Marruecos cuatro depósitos elevados, de hormigón pretensado en alguna de sus partes, de unos 30 m de altura sobre el suelo, de agradable aspecto exterior y de línea arquitectónicamente armoniosa.
José Antonio Torroja
doaj   +1 more source

Estudio del efecto del óxido en el comportamiento en rotura de la vaina de barra combustible [PDF]

open access: yes, 2011
La capa exterior de óxido en la vaina de combustible nuclear es un factor clave en el estudio de su comportamiento en rotura. En esta ponencia se utiliza el ensayo de compresión diametral (RCT) para estudiar el comportamiento en rotura de vainas oxidadas.
Martín Rengel, Miguel Ángel   +2 more
core  

Novel Bio‐Based Polyurethane Elastomers Customizable for Orthopedic Devices: Toughness, Rapid Degradability, and Safety

open access: yesSusMat, Volume 6, Issue 1, February 2026.
ABSTRACT Given the increasing global demand for sustainable materials and growing concerns over the depletion of petrochemical resources, we report the synthesis of an amorphous bio‐derived polyester diol, and this diol was polymerized with various isocyanates and butanediol, yielding a novel series of bio‐based polyurethane elastomers (BPUEs). Notably,
Chenxin Xu   +9 more
wiley   +1 more source

Estudio del Comportamiento en Fractura de Vainas de Combustible Nuclear fragilizadas por Hidruros [PDF]

open access: yes, 2010
En este artículo se ha estudiado, mediante el ensayo de compresión diametral (RCT), el comportamiento mecánico y en rotura de vainas de combustible nuclear de ZIRLO TM hidruradas.
Caballero Molano, Luis   +4 more
core   +1 more source

Numerical simulation of diametral compression tests for the evaluation of porous ceramic disks [PDF]

open access: yes, 2012
Se estudió el comportamiento mecánico de materiales porosos de cordierita mediante ensayos en compresión diametral. La solución analítica que permite la medición indirecta de la resistencia mecánica en compresión diametral se formula bajo ciertas ...
Camerucci, Maria Andrea   +2 more
core   +1 more source

Evaluación de la resistencia mecánica de muros de mampostería de ladrillos [PDF]

open access: yes, 2009
En este trabajo se presenta la metodología y los resultados de un ensayo especialmente diseñado para evaluar la capacidad portante de muros de mampostería.
Eperjesi, Lilian   +2 more
core  

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