Results 21 to 30 of about 9,181 (136)

The characterization of feces and urine: a review of the literature to inform advanced treatment technology [PDF]

open access: yes, 2015
The safe disposal of human excreta is of paramount importance for the health and welfare of populations living in low income countries as well as the prevention of pollution to the surrounding environment.
Cartmell, Elise   +3 more
core   +2 more sources

Regularization strategy for the layered inversion of airborne TEM data: application to VTEM data acquired over the basin of Franceville (Gabon) [PDF]

open access: yes, 2011
Airborne transient electromagnetic (TEM) is a cost-effective method to image the distribution of electrical conductivity in the ground. We consider layered earth inversion to interpret large data sets of hundreds of kilometre. Different strategies can be
Aster   +26 more
core   +2 more sources

Multiple common garden experiments suggest lack of local adaptation in an invasive ornamental plant [PDF]

open access: yes, 2011
Aims: Adaptive evolution along geographic gradients of climatic conditions is suggested to facilitate the spread of invasive plant species, leading to clinal variation among populations in the introduced range.
Binnekamp, D   +6 more
core   +3 more sources

The Crustal Thickness of the Philippine Sea Plate Derived from Gravity Data

open access: yesTerrestrial, Atmospheric and Oceanic Sciences, 2015
We constructed a new free-air gravity anomaly map of the Philippine Sea Plate (PSP) using ship-tracked gravity data from the National Geophysical Data Center (NGDC).
Horng-Yuan Yen   +7 more
doaj   +1 more source

Image Interpretation Using Appraisal Analysis [PDF]

open access: yes, 2006
In geophysical inversion, a significant effort is invested to obtain images of the Earth from finite data. The first step is to obtain an image i.e. solve the inverse problem.
Miller, Carlyle R., Routh, Partha S.
core   +2 more sources

Transition from connected to fragmented vegetation across an environmental gradient: scaling laws in ecotone geometry [PDF]

open access: yes, 2009
A change in the environmental conditions across space—for example, altitude or latitude—can cause significant changes in the density of a vegetation type and, consequently, in spatial connectivity.
Gastner, Michael T.   +3 more
core   +1 more source

Lipschitz stability for the electrostatic inverse boundary value problem with piecewise linear conductivities [PDF]

open access: yes, 2015
We consider the electrostatic inverse boundary value problem also known as electrical impedance tomography (EIT) for the case where the conductivity is a piecewise linear function on a domain $\Omega\subset\mathbb{R}^n$ and we show that a Lipschitz ...
Alessandrini, Giovanni   +3 more
core   +2 more sources

A numerical method for efficient 3D inversions using Richards equation

open access: yes, 2017
Fluid flow in the vadose zone is governed by Richards equation; it is parameterized by hydraulic conductivity, which is a nonlinear function of pressure head.
Cockett, Rowan   +2 more
core   +1 more source

Determining the Moho topography using an improved inversion algorithm: a case study from the South China Sea

open access: yesFrontiers in Earth Science
The Parker-Oldenburg method, as a classical frequency-domain algorithm, has been widely used in Moho topographic inversion. The method has two indispensable hyperparameters, which are the Moho density contrast and the average Moho depth.
Hui Zhang   +28 more
doaj   +1 more source

Moho topography beneath the Corinth Rift area (Greece) from inversion of gravity data [PDF]

open access: yes, 2001
International audienceOur aim is to understand better the rifting process by imaging the Moho depth variation beneath Corinth and Evvia. We present here the results of a gravity inversion analysis in the region of the Corinth and Evvia rift system, and ...
Diament, M   +3 more
core   +5 more sources

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