Results 1 to 10 of about 97,606 (139)

Effects of Organic Matter and Live Plants on Sulfidic Soil pH, Redox and Sulfate Content under Flooded Conditions [PDF]

open access: yesBulgarian Journal of Soil Science, 2020
In an undisturbed state below the water table, the sulfidic soils are benign, unless exposed due to various natural processes or anthropogenic activities and sulfuric acidity is produce, which has negative impacts on the environment.
Patrick S. Michael
doaj   +1 more source

El marcador discursivo eh en el habla culta de La Habana. Reflexiones y contrastes

open access: yesCuadernos de la ALFAL, 2023
La forma eh es empleada con bastante frecuencia en la conversación en general. Por este elevado índice de uso ha sido considerada un expletivo (Cortés Rodríguez 1991), una muletilla (Rabanales y Contreras 1992) o una pausa llena (Briz 1998). Sin embargo,
Marialys Perdomo Carmona
doaj   +4 more sources

Estimation of cost and the amount of production in construction of forest road by combining hydraulic excavator and bulldozer (Case study: Liashisera district, Guilan Province) [PDF]

open access: yesتحقیقات جنگل و صنوبر ایران, 2015
Using machines such as hydraulic excavator and bulldozer is very common in construction of forest roads, and their costs have a major share from the hourly cost of a road construction project.
Keivan Hosseinpour Asli   +2 more
doaj   +1 more source

Práctica de campo en la asignatura de Geografía Económica mediante aprendizaje basado en proyectos y en el lugar

open access: yesDidáctica Geográfica, 2022
El trabajo de campo en Geografía constituye una de las esencias de la disciplina donde la teoría, la práctica y la realidad se retroalimentan. La transferencia de conocimiento, obtenido en la investigación del profesorado, es transmitido en la docencia ...
Mª Concepción Torres Enjuto   +2 more
doaj   +1 more source

Memorias de infancia sobre los viajes de visitas al retorno del exilio

open access: yesSecuencia, 2022
El siguiente trabajo se desprende de los avances de mi tesis doctoral en la que exploro las memorias de quienes experimentaron el exilio en sus infancias durante las últimas dictaduras en Argentina y Uruguay.
Fira Chmiel
doaj   +3 more sources

Evaluation of fuel load following fire in Loblolly Pine (Pinus taeda L.) plantations using line sampling and of FLM method (Case study: Takhsam plantations in Guilan Province) [PDF]

open access: yesتحقیقات جنگل و صنوبر ایران, 2015
The occurrence of fire in natural ecosystems depends on the prevailing meteorological conditions, the availability of ignition material and the quantity and characteristics of fuel biomass.
Masoud Amin Amlashi   +5 more
doaj   +1 more source

Development of a New Evaporation Exposure Model: Chemical Product Evaporation Model (CPEM)

open access: yesApplied Sciences, 2022
The evaporation of chemicals in applied chemical products such as cleaning products and paint has been evaluated using the evaporation mode of the ConsExpo model.
Geonwoo Yoo   +3 more
doaj   +1 more source

Regulaciones sobre filiación y familia en la definición de los derechos ciudadanos entre fines de siglo XIX y principios de siglo XX (Argentina, Chile, Uruguay)

open access: yesDiálogos, 2019
El trabajo presenta una revisión analítica de la literatura alrededor de los debates regionales en Argentina, Chile y Uruguay sobre familia, matrimonio y filiación suscitados en torno a la redacción de los códigos civiles en las últimas décadas del ...
Paz Landeira Florencia, LLobet Valeria
doaj   +1 more source

Influence of hydrometeorological factors on the ecological state of the hypersaline lake Saki (Crimea) in 2017–2018

open access: yesТрансформация экосистем, 2020
In order to identify the influence of hydrometeorological conditions on the seasonal changes in the ecological state of the salt Lake Saki (Crimea), the dynamics of hydrochemical parameters of wa-ter (salinity, oxygen content, temperature, pH, Eh) and ...
Irina I. Rudneva   +4 more
doaj   +1 more source

An alternate optimization method for energy hub siting and sizing considering supply-demand balance

open access: yesZhejiang dianli
Energy hubs (EHs) can effectively facilitate the consumption of renewable energy with high uncertainty. Still, the existing EH planning methods have not fully considered the correlation between siting and sizing. Hence, this study introduces an alternate
RUAN Tao   +3 more
doaj   +1 more source

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