Results 31 to 40 of about 13,972 (143)

Materiales reciclados de llantas automotrices y la radiacion gamma en el mejoramiento del concreto [PDF]

open access: yes, 2015
El concreto es uno de los materiales más importantes dentro de la industria de la construcción, esto se debe no solo a su costo sino a las propiedades que presenta como su fácil colocación antes del fraguado, su resistencia al intemperismo, su ...
BARRERA DIAZ, CARLOS EDUARDO   +7 more
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Unalienated labor as cooperative self‐determination: Aristotle and Marx

open access: yesEuropean Journal of Philosophy, Volume 33, Issue 1, Page 29-55, March 2025.
Abstract In this paper, I offer an original interpretation of Marx's conception of unalienated labor, which I frame as a response to Aristotle's view of work, or technē. Both Aristotle and Marx share a particular conception of freedom as “normative self‐determination,” according to which an activity is free insofar as it does not depend for its value ...
Kyle Scott
wiley   +1 more source

An annotated list of the centipedes (Chilopoda) in the National Collection of Arachnids, Instituto de Biología, Universidad Nacional Autónoma de México [PDF]

open access: yes, 2010
The National Collection of Arachnids, Instituto de Biología, Universidad Nacional Autónoma de México (México City) houses 476 chilopod samples, of which 197 are determined to genus and/or species. These are documented here and represent several new state
Cupul-Magaña, Fabio Germán
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The Convergence Analysis of Higher Order Approximation for the Transport Equation With Nonhomogeneous and Homogeneous Boundary Conditions

open access: yesJournal of Applied Mathematics, Volume 2025, Issue 1, 2025.
The study examines the convergence analysis of a higher order approximation for a transport equation with both nonhomogeneous and homogeneous boundary conditions by using the Crank–Nicolson and their modified schemes. Using the Taylor series expressions, the suggested numerical schemes are created. Von Neumann stability analysis combined with the error‐
Kedir Aliyi Koroche   +2 more
wiley   +1 more source

Tracing Groundwater‐Surface Water Interactions in a Volcanic Maar Lake Using Stable Isotopes and 222Rn

open access: yesJournal of Geophysical Research: Biogeosciences, Volume 129, Issue 12, December 2024.
Abstract Isotope hydrological studies to understand groundwater‐surface water interactions in tropical, high‐elevation catchments are limited. These interactions are important in controlling lake water residence time, aqueous biogeochemistry, and water availability for downstream communities and ecosystems. To better comprehend the complexity of spatio‐
Germain Esquivel‐Hernández   +8 more
wiley   +1 more source

"Blue skies, green grass”: Is The Redemption of Althalus a reliable biological record? [PDF]

open access: yes, 2016
This paper investigates whether high fantasy worlds can be naturalistic. After a brief introductory analysis of the Lonely Mountain in The Hobbit, discussion turns to The Redemption of Althalus by David and Leigh Eddings.
Lee Raye
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FGF21 increases the sensitivity of hepatocellular carcinoma to sorafenib under hypoxia

open access: yesMalignancy Spectrum, Volume 1, Issue 2, Page 99-112, June 2024.
When combined with sorafenib (SORA), fibroblast growth factor 21 (FGF21) could increase the sensitivity of hepatoma cells to SORA and inhibit the growth and migration of hepatoma cells. FGF21 may increase the sensitivity of SORA to hepatocellular carcinoma (HCC) by enhancing phosphorylation of mothers against decapentaplegic homolog 3 through the ...
Ting Zhang   +11 more
wiley   +1 more source

On quantifying heterogeneous treatment effects with regression‐based individualized treatment rules: Loss function families and bounds on estimation error

open access: yesStat, Volume 13, Issue 2, June 2024.
Summary Heterogeneity in response to treatment is a pervasive problem in medicine. Many researchers have proposed individualized treatment rule methods for this problem, which personalize treatment recommendations based on an individual's recorded covariates.
Michael T. Gorczyca, Chaeryon Kang
wiley   +1 more source

Road Salt Legacies: Quantifying Fluxes of Chloride to Groundwater and Surface Water Across the Chicago Metropolitan Statistical Area

open access: yesWater Resources Research, Volume 60, Issue 2, February 2024.
Abstract Freshwater chloride concentrations have been increasing in North American surface waters for decades, largely driven by increases in the use of road salt, which is commonly applied as a deicer. In Chicago, thousands of tons of road salt are applied to roadways each winter, and increases in surface water chloride concentrations have been noted ...
K. J. Van Meter, E. Ceisel
wiley   +1 more source

Tefroestratigrafía (40 000-2000 a. P.) en el sector caribe de los volcanes Barva, Congo y Hule, Cordillera Central, Costa Rica [PDF]

open access: yes, 2004
El área de estudio se ubica en el flanco norte de la Cordillera Volcánica Central, en las inmediaciones de los volcanes Poás (históricamente activo), Von Frantizius (activo por lo menos hace 40 000 años), Congo (activo hace unos 6000 años) y comprende la
Alvarado, Guillermo   +1 more
core  

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