Results 11 to 20 of about 130,064 (151)

Oversimplification and Overstandardization in Biological Methods: Sperm Bioassays in Ecotoxicology as a Case of Study and a Proposal for Their Reformulation

open access: yesThe Scientific World Journal, 2014
An interesting toxicological bioassay (fertilization inhibition in sea urchin) uses as assessment criterion a variable (fertilization ratio) whose variation with time creates two types of difficulties.
M. A. Murado, M. A. Prieto
doaj   +2 more sources

Antifungal properties of whey fermented by lactic acid bacteria in films for the preservation of cheese slices

open access: yesInternational Journal of Dairy Technology, Volume 75, Issue 3, Page 619-629, August 2022., 2022
Workflow to develop an active film with LAB‐fermented whey for a novel application as a biopreservative of cheese. Fungal deterioration by Penicillium species in refrigerated storage conditions is one of the main risk factors for health issues and food waste in the dairy industry. The purpose of this study was to evaluate the antifungal properties of a
Victor Dopazo   +5 more
wiley   +1 more source

Desarrollo sustentable y valorización del paisaje

open access: yesTurismo y Patrimonio, 2022
El paisaje es un atractivo turístico de carácter internacional que refleja costumbres, tradiciones y saberes con respecto a su relación hombre-naturaleza; por lo tanto, contiene un sinfín de significados e interpretaciones.
Karla Gómez Cuevas   +2 more
doaj   +1 more source

VALORIZACIÓN DE LAS ACCIONES DE UNA EMPRESA INDUSTRIAL

open access: yesIndustrial Data, 1998
Una organización empresarial cuando inicia sus actividades posee un nivel de activos y una determinada estructura de endeudamiento expresada por la relación deuda /capital.
Néstor Santos Jiménez
doaj   +1 more source

El género y el nombre

open access: yesIntersecciones en Comunicación, 2021
El presente artículo se propone como una aproximación, desde una perspectiva de género, al debate que desencadenó la mediatización de algunos de los términos del proyecto de modificación de la Ley del nombre impulsado por el gobierno nacional durante los
María Soledad Rolleri
doaj  

Anaerobic Codigestion of Sugarcane Press Mud with Food Waste: Effects on Hydrolysis Stage, Methane Yield, and Synergistic Effects

open access: yesInternational Journal of Chemical Engineering, Volume 2018, Issue 1, 2018., 2018
Sugarcane press mud (SPM) has a high potential to produce renewable energy through anaerobic digestion (AD); however, hydrolysis is the limiting stage of the process due to the presence of slowly biodegradable compounds. An alternative that can improve this deficiency is anaerobic codigestion (AcoD).
Lina M. Cárdenas-Cleves   +3 more
wiley   +1 more source

La valoración de las culturas indígenas en el mercado turístico: ¿apropiación, despojo o resignificación?

open access: yesAnales de Antropología, 2020
Las culturas de los pueblos indígenas se encuentran inmersas en un proceso de valorización selectiva para su comercialización en el mercado turístico. Bajo los mecanismos del mercado, el turismo ha mostrado su capacidad de digerir la inmensa diversidad ...
Cristina Oehmichen Bazán
doaj   +1 more source

21st century competency strengtheining program throught the ABP metholodogy: assessment by high school student

open access: yesINFAD, 2019
In recent decades, each year are the most important countries in the development of 21st century skills in the school system, but the implementation has not been free of difficulties, instead of the Program d’acompanyament i accés The Higher Education ...
Héctor Gonzalo Bastías Montaner
doaj   +1 more source

Evaluation of a two-phase extraction system of carbohydrates and proteins from chlorella vulgaris utex 1803 [PDF]

open access: yes, 2016
Microalgae are a valuable source of high-value products and biofuels, however the high-energy cost required for the extraction of their metabolites has kept questioning on possible industrial upgrading. The aim of this study was to evaluate the effect of
Andrés, F.   +7 more
core   +1 more source

Materiales vitrocerámicos a partir de lodos procedentes de una estación de depuración de aguas residuales urbanas (en la Ciudad de El-Sadat, Egipto)

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 2011
Urban wastewater security is a source of significant volumes of sludge which is to be managed. This paper presents the possibility of applying a management process based on vitrification and by which, in addition to inert contaminants in sludge, you get ...
Garcia-Valles, M.   +5 more
doaj   +1 more source

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