Results 61 to 70 of about 1,905 (185)

Photochemical effects of Mars‐like UV irradiation on carboxylic acids in carbonaceous chondrites and expectations for abiotic background organics on Mars

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract In the search for life on Mars, understanding the origin of preserved organics is critical. Expected sources include exogenous delivery, endogenous synthesis, and potentially life. Environmental processing by ultraviolet (UV) irradiation can alter these organics, obscuring hallmarks of their origin. To deconvolve these effects, we conducted an
D. K. Buckner   +7 more
wiley   +1 more source

Remoción de sulfuro empleando ozono como agente oxidante en aguas residuales de curtiembres

open access: yesRevista Facultad de Ingeniería, 2019
En este estudio se evaluó la remoción de sulfuros en aguas residuales del proceso de pelambre o depilado de pieles, utilizando ozono como agente oxidante.
María Fernanda Umbarila-Ortega   +2 more
doaj   +1 more source

Making Water Investible: Development Banking, Regulatory Governance, and the Institutional Production of Sanitation Infrastructure in Brazil

open access: yesRegulation &Governance, EarlyView.
ABSTRACT Why did long‐horizon private investment in Brazilian water and sanitation expand after 2016 despite fragmented authority and persistent political contestation? This article places the Brazilian Development Bank (BNDES) inside, rather than outside, the credible‐commitment framework. It argues that the bank operated as a credibility intermediary:
Charles Corrêa Schramm   +1 more
wiley   +1 more source

Agua potable y red cloacal

open access: yesRevista de Historia Americana y Argentina, 2020
En el marco de una creciente profesionalización de las funciones e instituciones estatales a comienzos del siglo XX, el objetivo de este artículo es indagar cuáles fueron los objetivos de las políticas públicas propuestas e implementadas durante el ...
Natalia Luis
doaj  

DETERMINACIÓN DE LA EFICIENCIA DE LA PLANTA DE TRATAMIENTO DE AGUAS RESIDUALES DE LA UNIVERSIDAD DE SAN CARLOS,USAC

open access: yesAgua, Saneamiento & Ambiente, 2022
La Universidad de San Carlos de Guatemala, tiene su propia planta de tratamiento de las aguas residuales generadas en sus instalaciones, consta de sedimentación primario, filtro percolador (de tres etapas en serie) y sedimentación secundaria, con ...
Oscar Luis Ramírez Sánchez
doaj  

Colonisation History of Freshwater Snails Across the Atlantic and Mediterranean Islands: Insights From Mercuria (Littorinimorpha, Hydrobiidae)

open access: yesZoologica Scripta, EarlyView.
ABSTRACT Islands harbour unique biodiversity, and depending on their geological origin, they have fundamentally different colonisation histories: continental islands may contain relict faunas shaped by vicariance and sporadic gene flow, whereas oceanic islands must have been colonised across open seas, often through long‐distance dispersal events ...
Jonathan P. Miller   +3 more
wiley   +1 more source

Evaluación de los efluentes provenientes de la agroindustria del fique en el municipio de Totoró - Cauca

open access: yesBiotecnología en el Sector Agropecuario y Agroindustrial, 2008
Se evaluaron los efluentes provenientes de la agroindustria del fique en el río Molino del corregimiento de Paniquitá (Totoró-Cauca) en tres fincas y en cuatro sitios a lo largo del río (1: Bocatoma del acueducto de Paniquitá, 2: finca La Esperanza ...
Cristian Dagua Mosquera   +2 more
doaj  

Elevational variation in heart mass and suppression of hypoxia‐induced right ventricle hypertrophy in Andean leaf‐eared mice (Phyllotis)

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend In lowland mammals that ascend to high elevation, hypoxia‐induced changes in the pulmonary circulation can give rise to hypoxic pulmonary hypertension (HPH) and associated right‐ventricle (RV) hypertrophy. Andean mice with broad elevational ranges have greater heart mass relative to body size at higher elevations, but they ...
Naim M. Bautista   +9 more
wiley   +1 more source

Valor económico del agua en el Distrito de Riego 003 Tula, Hidalgo, México

open access: yesTecnología y ciencias del agua
Ante el incremento en la demanda de agua para riego en los últimos años, se necesitan tomar medidas de política que contribuyan al uso y asignación eficiente del recurso agua en la agricultura.
Jonathan Hernández-Pérez   +3 more
doaj   +1 more source

From Indicator to Prediction: Five Decades of Biochemical Oxygen Demand Research in Tropical Freshwaters

open access: yesWorld Water Policy, Volume 12, Issue 4, November 2026.
ABSTRACT Biochemical oxygen demand (BOD) remains a core indicator of organic pollution in freshwater monitoring, but its role in water policy and practice is changing as water‐quality assessment moves toward predictive, integrative, and decision‐support approaches.
Isadora Favero Roque Cenci   +5 more
wiley   +1 more source

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