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Source and acquisition of rhizosphere microbes in Antarctic vascular plants
(2022)Rhizosphere microbial communities exert critical roles in plant health, nutrient cycling, and soil fertility. Despite the essential functions conferred by microbes, the source and acquisition of the rhizosphere are not ...
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Sources of information that guide the pedagogical work of early childhood educators: an exploratory study in Chile
(2023)The following article is a qualitative study that identifies the types of sources accessed by early childhood educators in their search for information to guide their pedagogical decisions regarding classroom problems. ...
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Source–sink impulsive bioeconomic models: Seasonal closures with fixed length
; ; Cordova-Lepe, Fernando
(2011)
The dynamics of four source–sink models for an exploited resource under a constant fishing effort are here presented. Two models are described by ordinary differential equations; the other two are expressed by impulsive ...
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Spanish adaptation of the Dimensional Anhedonia Rating Scale (DARS)
(2019)Background: Anhedonia is defined as the lack of enjoyment, engagement in, or energy for life's experiences. Only two scales to measure anhedonia have been adapted for use in Spanish-speaking populations. The aim of this ...
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Sparkling jewels of innovation: revolutionizing environmental solutions with spinel-infused advanced nanomaterials, unveiling today's insights, and illuminating tomorrow's frontiers
(2024)In-depth explorations into spinels have produced noteworthy findings in the realm of research, owing to remarkable advancements across various applications, including photocatalysis, dye degradation, sensors, and batteries. ...
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Spatial analysis of risk of morbidity and mortality by COVID-19 in Europe and the mediterranean in the year 2020
(2021)El mapeo de enfermedades busca representar el riesgo de una enfermedad. El objetivo de este trabajo es hacer un análisis del riesgo para la pandemia de COVID-19 en Europa y el Mediterráneo. Se utilizaron los datos de ...
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Spatial and temporal changes of subtidal benthic communities in Antofagasta Bay (SE Pacific) stressed by permanent human disturbances
(2023)Human activities have impacted the coastal area of Antofagasta Bay for decades, particularly miners’ activities (loading of mineral concentrates of Cu, Zn, Pb, and Mg), port operations, tourism, desalination plants, artisanal ...
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Spatial characterization of climatic variables for Arica-Parinacota and Tarapacá, Chile using topoclimatic analysis
(2023)In the present study, models were developed to determine the monthly and annual spatio-temporal variation of temperature, precipitation, and solar radiation based on topoclimatic analysis of Arica-Parinacota and Tarapacá ...
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Spatial co-occurrence patterns of benthic microbial assemblage in response to trace metals in the Atacama desert coastline
(2023)Taxonomic and functional microbial communities may respond differently to anthropogenic coastal impacts, but ecological quality monitoring assessments using environmental DNA and RNA (eDNA/eRNA) in response to pollution ...
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Spatial distribution of dengue in Ecuador during 1994–2018 using geographic information systems (GIS) – implications public health and travel medicine
(2020)Background: After serious epidemics of chikungunya (CHIKV) and Zika (ZIKV) in the Americas, dengue (DENV) has reemerged in most countries. We estimated the incidence rates and evolution of DENV cases in Ecuador from 1994 ...
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Spatial variability of production and quality in table grapes ‘flame seedless’ growing on a flat terrain and slope site
(2021)(1) Background: Precision agriculture has been used mostly to study spatial variability in vineyards for winemaking. Nevertheless, there is little available information on the impacts of its use on table grape vineyards ...
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Spatiotemporal distribution of key pelagic microbes in a seasonal oxygen-deficient coastal upwelling system of the Eastern South Pacific Ocean
(2020)The strong seasonal variability in physical-chemical conditions of the Eastern South Pacific Ocean creates an ideal setting to study spatiotemporal distribution of key marine microbial communities. We herein report a nearly ...
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Speaker counting based on a novel hive shaped nested microphone array by WPT and 2D adaptive SRP algorithms in near-field scenarios
(2023)Speech processing algorithms, especially sound source localization (SSL), speech enhancement, and speaker tracking are considered to be the main fields in this application. Most speech processing algorithms require knowing ...
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Speaker counting by scattered microphone array based on DOA and eigenvalue estimations in adverse environments
(2023)In this paper, a smart subband system for speaker counting is proposed by scattered microphone array (SMA) and using direction of arrival (DOA) estimation with adaptive eigenvalue decomposition (AED). Firstly, the recorded ...
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Spectral reflectance modeling by wavelength selection: Studying the scope for blueberry physiological breeding under contrasting water supply and heat conditions
; ; ; ; ; ; Poblete-Echeverría, Carlos; ; ; (2019)
To overcome the environmental changes occurring now and predicted for the future, it is essential that fruit breeders develop cultivars with better physiological performance. During the last few decades, high-throughput ...
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Spent coffee grounds applied as a top-dressing or incorporated into the soil can improve plant growth while reducing slug herbivory
(2022)Between 8 and 15 million tons of spent coffee grounds (SCG) are produced as global waste each year. To reduce waste to landfill, SCG are proposed as a carbon and nutrient source for degraded soils. SCG contain caffeine and ...
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Spinning black holes for generalized scalar tensor theories in three dimensions
(2020)We consider a general class of scalar tensor theories in three dimensions whose action contains up to second-order derivatives of the scalar field with coupling functions that only depend on the standard kinetic term of ...
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Stability analysis of a self-cycling fermentation model with state-dependent impulse times
Cordova-Lepe, Fernando; ; (2014)
A self-cycling fermenter is a batch fermenter subject to recurrent emptyings of liquid volume followed by the refilling withnew fresh substrate. This article construc ts a modified model of self-cycling fermenter, which ...
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Stability and bifurcation in the circular restricted (N + 2) -body problem in the sphere S2 with logarithmic potential
(2023)In this paper we study part of the dynamics of a circular restricted -body problem on the sphere and considering the logarithmic potential, where primaries remain in a ring type configuration (identical masses placed at ...