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Emerging toxicological research has shown that ultrafine particles (UFP, dp < 0.1–0.2 μm) may be more potent than coarse or fine particulate matter. To better characterize quasi-UFP (PM0.25, dp < 0.25 μm), we conducted a year-long sampling campaign at 10 distinct areas in the megacity of Los Angeles, includi Anthropogenic nanoparticles in the environment
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Spatial variability of soil attributes of the experimental plot was high, being higher for chemical properties. Geostatistical analysis allowed visualization of the spatial variability of soil structural deterioration which coincided with the area of greatest chemical variability.
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The spatial variability of soil attributes is also influenced by water flow, which is related to the landscape, because the preferential water routes define the most important erosion-deposit mechanisms (Alba, 2003). Silva & Alexandre (2005) evaluating the spatial variability of spray irrigated corn yield in the presence of complex topography and soil attributes, concluded that topographical ...
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Much of the work done at IRI is related to climate variability, which is defined by the World Meteorological Organization as “variations in the mean state and other statistics of the climate on all temporal and spatial scales, beyond individual weather events.” In simpler terms, variability is the range of climate compared to its average. The fluctuations comprising climate variability can ...
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Spatial variability was mostly considered at larger scale: landscape, catchment, or regional scale, where obvious heterogeneities in soil type, land usage, and hydrology made the assumption of spatial homogeneity difficult to defend. In this context, soil samples were often taken in a single location in a field or in a plot or, if several samples were collected, they were pooled and mixed in ...
Chat OnlineSpatial variability of soil physical properties within or among agricultural fields is inherent in nature due to geologic and pedologic soil forming factors, but some of the variability may be induced by tillage and other management practices.
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3. Some Effects of Aquifer Variability and Data Limitations on Results of Groundwater Modelling 14 3.1 Parameter Errors 14 3.2 Effects of Measurement Errors 19 3.3 Flow in Non-Uniform Aquifers 23 3.4 Concluding Comments 24 4. Data Requirements of Groundwater Models 25 4.1 System Definition and Model Specification 25 4.2 Flow Models 26
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variable [var´e-ah-b'l] something that changes; an attribute or property of a person, event, or object that is known to vary in a given study. dependent variable in a mathematical equation or relationship between two or more variables, a variable whose value depends on those of others; it represents a response, behavior, or outcome that the researcher ...
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Spatial variability of soil properties and its application in predicting surface map of hydraulic parameters in an agricultural farm Priyabrata Santra*, U. K. Chopra and Debashis Chakraborty Division of Agricultural Physics, Indian Agricultural Research Institute, New Delhi 110 012, India Knowledge of spatial variation of soil properties is im- portant in precision farming and environmental ...
Chat Onlinehigh intraindividual variability in terms of spatial definition. In the cur-rent study, the DMN showed the most substantial interatlas spatial overlap among the three networks, with an average of 38%. This is in the same range as that described by Jann et al. (2015) when compar-ing the spatial composition of the DMN as identified using either resting-state fMRI or arterial spin labeling. The ...
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Examples of spatial variability in a sentence, how to use it. 24 examples: Spatial variability in degradation rates was high across the cell. - Spatial…
Chat OnlineVariability in spatial temporal gait measures was originally considered to represent noise within the locomotor system without having any physiological significance. However, gait variability is now believed to reflect the underlying motor control of gait and appears to be sensitive to different pathological or ageing conditions [1]. The purpose of this review is to introduce gait variability ...
Chat OnlineDespite significant temporal and spatial variability in the internal tide, the alongshore-integrated flux of internal tide energy onto the Oregon shelf, where it is dissipated, does not vary much with time. Approximately 65% of the M 2 baroclinic tidal energy generated on the slope is dissipated there, and the rest is radiated toward the shelf and interior ocean in roughly equal proportions ...
Chat OnlineDespite significant temporal and spatial variability in the internal tide, the alongshore-integrated flux of internal tide energy onto the Oregon shelf, where it is dissipated, does not vary much with time. Approximately 65% of the M 2 baroclinic tidal energy generated on the slope is dissipated there, and the rest is radiated toward the shelf and interior ocean in roughly equal proportions ...
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Spatial variability is a natural and inevitable characteristic of all soil bodies.3 Although soil variability has been studied in detail for over sixty years, and although the importance of place-to-place variation is intuitively recognized by all who study soil, there is surprisingly little formal acknowledgement of its presence in mapping procedures and soil descriptions.4 Dr. Campbell …
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