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2011, Advanced Synthesis & Catalysis
Sustainability
Rice Husk Ash in Concrete2023 •
This study conducted an extensive literature review on rice husk ash (RHA), with a focus on its particle properties and their effects on the fresh, mechanical, and durability properties of concrete when used as a partial cement replacement. The pozzolanic property of RHA is determined by its amorphous silica content, specific surface area, and particle fineness, which can be improved by using controlled combustion and grinding for use in concrete. RHA particle microstructures are typically irregular in shape, with porous structures on the surface, non-uniform in dispersion, and discrete throughout. Because RHA has a finer particle size than cement, the RHA blended cement concrete performs well in terms of fresh properties (workability, consistency, and setting time). Due to the involvement of amorphous silica reactions, the mechanical properties (compressive, tensile, and flexural strength) of RHA-containing concrete increase with increasing RHA content up to a certain optimum level. Furthermore, the use of RHA improved the durability properties of concrete (water absorption, chloride resistance, corrosion resistance, and sulphate resistance). RHA has the potential to replace cement by up to 10% to 20% without compromising the concrete performance due to its high pozzolanic properties. The use of RHA as a partial cement replacement in concrete can thus provide additional environmental benefits, such as resource conservation and agricultural waste management, while also contributing to a circular economy in the construction industry.
Educació i Història: revista d'història de l'educació
Jaume Durany i Bellera (1877-1938): mestre racionalista i polític. Una aproximació biogràfica.2023 •
Aquest article pretén fer conèixer la figura de Jaume Durany i Bellera, mestre racionalista, periodista i activista polític.
Eretz Israel in Late Antiquity. Introductions and Studies. Volume II. Yad Izhak Ben-Zvi, Jerusalem. Pp. 677-694 (Hebrew).
Monetary Circulation in Eretz Israel in Late Antiquity (Fifth to Seventh Centuries).2022 •
An overview of the coinage that circulated in Eretz Israel in Late Antiquity, from the fourth to the seventh century. Based on the IAA database of coins. The article is in Hebrew.
Desde hace muchos años se sabía que la actividad cardíaca estaba relacionada con una corriente eléctrica mensurable. En 1887, Ludwig y Waller, utilizando el electroscopio capilar fueron capaces de registrar esta fuerza electromotriz desde la región precordial. Posteriormente, el descubrimiento del galvanómetro de cuerda en 1903, por Guillermo Einthoven, permitió la obtención del electrocardiograma (ECG). El galvanómetro de cuerda está constituido por un poderoso electroimán entre cuyos polos se encuentra suspendida una fina cuerda de cuarzo, revestida con platino, plata u oro, con el fin de permitir la conducción de una corriente eléctrica. Se denomina campo magnético a un campo de fuerza constante originado por un electroimán, en el que la fuerza siempre se dirige desde el polo norte del electroimán hacia el polo sur (Ver Fig. 1). La corriente que se origina en el corazón se puede conectar, a través de electrodos de superficie, a la cuerda del galvanómetro con lo cual se crea otro campo de fuerza magnética. Esta fuerza se orienta alrededor del eje longitudinal de la cuerda y sigue una dirección a favor o en contra de las agujas del reloj (vista desde el extremo inferior de la cuerda), de acuerdo a la dirección del flujo de la corriente en dicha cuerda. El campo de fuerza que rodea a la cuerda es un campo magnético de fuerza variable y los movimientos de la cuerda dependerán de las relaciones recíprocas que existan entre este campo y el originado por el electroimán (Ver Fig. 1).
Global Transformation of Christian Zionism
Christian Zionism in Africa: A Question of Agendas2022 •
An exploration of the agendas of Israel in Africa, Christian Zionists in Africa, and African churches and governments in their relationships with Israel and with Christian Zionism, looking at ways these coalesce and conflict. A chapter in the volume Global Transformation of Christian Zionism, edited by Yoshihiro Yakushige, published by Kyoto University in 2022
Keck School of Medicine of USC Medical Student Research Forum 2024
Clinician Wellbeing Approaches: Insights from Interviews2024 •
Tohoku Shibu Sokai, Koenkai koen ronbunshu
148 Electromagnetic Properties Measurement by Incremental Permeability Method Aiming at Evaluation of Creep Degradation of Mod. 9Cr-1Mo Steels2016 •
The Pediatric Infectious Disease Journal
Evaluation of Mycobacterium tuberculosis transmission from a pediatrician and initial compliance to prophylaxis of contacts in an outpatient pediatric clinic2000 •
Acta Horticulturae
The impact of lamp environment on prediction of peach TSS content2016 •
International Journal of Biological Macromolecules
Exfoliating B. mori silk into high aspect ratio nanofibrils facilitated by response surface methodology2020 •
Research Journal for Veterinary Practitioners
An Evaluation of Foot-and-Mouth Disease Outbreak in Relation to Vaccination in a Herd of Cattle and Buffaloes2014 •
Unpublished Manuscript
Desirable difficulties in contextual word learning: Scaffolding of context constraint leads to robust learning and retention2015 •
Physical Review Letters
Rippling Patterns in Aggregates of Myxobacteria Arise from Cell-Cell Collisions2002 •