loess

Definitions

  • WordNet 3.6
    • n loess a fine-grained unstratified accumulation of clay and silt deposited by the wind
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Webster's Revised Unabridged Dictionary
    • n Loess lẽe (Geol) A quaternary deposit, usually consisting of a fine yellowish earth, on the banks of the Rhine and other large rivers.
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Century Dictionary and Cyclopedia
    • n loess In geology, originally, a certain loamy deposit in the valley of the Rhine; now, by extension, any detrital accumulation more or less resembling the original loess occurring in other parts of the world. The loess is a very fine loam, very homogeneous in character, showing hardly any indication of stratification, and containing in numerous localities large quantities of land and fresh-water shells, as well as bones of land-animals. In northern China it covers a vast area and is developed to a great thickness, and, being deeply eroded by the rivers, has given rise to a very remarkable topography. In the regions where the loess occurs it is the most recent of the formations. The theories of its origin are numerous, and the subject is one of great complexity, so that “some skilful geologists, peculiarly well acquainted with the physical geography of Europe, have styled the loess the most difficult geological problem.” (Lyell.) Much that is called loess by some geologists is certainly river-mud deposited in the ordinary manner. Lyell connects the loess of the Rhine valley with glacial action; and Richthofen considers it as beyond dispute that the loess of China is a subaërial deposit, borne by the wind to its present resting-place.
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Chambers's Twentieth Century Dictionary
    • n Loess lės or lō′es a loamy deposit of Pleistocene age, in the valleys of the Rhine, Danube, and Rhone
    • Loess Also Löss
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Etymology

Webster's Revised Unabridged Dictionary
G. löss,

Usage

In literature:

HUMAN REMAINS IN THE LOESS, AND THEIR PROBABLE AGE.
"The Geological Evidence of The Antiquity of Man" by Charles Lyell
Roads here were in many cases of a light loess, and some of red limestone rock, with a few li of paved roads.
"Across China on Foot" by Edwin Dingle
Knowing that it had no place in the loess, he began digging to ascertain the reason for it being there.
"Archeological Investigations" by Gerard Fowke
Loess of the Rhine, 384.
"On the Origin of Species by Means of Natural Selection" by Charles Darwin
Loess country, the, 228.
"A Wayfarer in China" by Elizabeth Kendall
The loess soil is extremely favourable to agriculture.
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 2" by Various
So compact is the loess that there is no danger of a cave-in.
"Earth and Sky Every Child Should Know" by Julia Ellen Rogers
Loess of the Rhine, 185.
"Principles of Geology" by Charles Lyell
Its southern foot-hills, covered with loess, make the fertile valleys of Hissar and the Vakhsh.
"Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 2" by Various
In all these features it presents a precise counterpart to the loess of the Mississippi.
"A Manual of Elementary Geology" by Charles Lyell
In 1823, Aime Boue disinterred portions of a human skeleton from ancient undisturbed loess near Lahr, a small village nearly opposite Strasbourg.
"A Manual of the Antiquity of Man" by J. P. MacLean
The famous loess deposits of China in the lee of the Desert of Gobi are examples.
"Climatic Changes" by Ellsworth Huntington
These are the loess plains of Nebraska.
"The Adventures of a Grain of Dust" by Hallam Hawksworth
For a general account of loess, see Sixth Annual Report of U.S. Geological Survey.
"The Geography of the Region about Devils Lake and the Dalles of the Wisconsin" by Rollin D. Salisbury
The post-Tertiary formations are represented by glacial deposits in the highlands and loess on their borders.
"Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 7" by Various
The soil is of four kinds: till or drift, alluvial, loess or bluff and geest.
"Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 6" by Various
On loess hillsides in China are thousands of villages whose eavelike dwellings have been excavated in this soft, yet firm, dry loam.
"The Elements of Geology" by William Harmon Norton
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In news:

Turkeys abound in Iowa's Loess Hills.
An adventurous and educational hunting trip to the Loess Hills.
Art show features SL duo's fascination with Loess Hills.
The Lakes Art Center in Okoboji features an exhibit titled "Meditations on the Loess Hills" beginning June 5.
The Natural Resource Commission (NRC) of the Iowa Department of Natural Resource s will meet 8:30 am, Oct 11, at the Loess Hills State Forest Visitor's Center, 206 Polk Street, in Pisgah.
In the Chinese Communist Party’s mix of history and mythology, the cave homes dug in the soft, loess hills of Yan’an hold a defining moment.
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In science:

The effect of water content on the cyclic behavior of loess was clearly evidenced.
Use of a differential pressure transducer for the monitoring of soil volume change in cyclic triaxial test on unsaturated soils
KEYWORDS: Unsaturated soils, cyclic tests, volume measurement, loess, calibration.
Use of a differential pressure transducer for the monitoring of soil volume change in cyclic triaxial test on unsaturated soils
A geological and geotechnical characterisation of the loess of Northern France. A.W.
Use of a differential pressure transducer for the monitoring of soil volume change in cyclic triaxial test on unsaturated soils
Concerning the upper crust, the values quoted by different authors using different methods (surface exposure data, sedimentary data and loess correlations with La) are consistent within about 10%.
Geo-neutrinos and Earth's interior
The dashed line is the 80% power contour line obtained from Loess smoothing.
A resampling-based test to detect person-to-person transmission of infectious disease
The 80% power contour curve obtained by Loess smoothing lies between green circles and red downward triangles.
A resampling-based test to detect person-to-person transmission of infectious disease
The dashed line is the 80% power contour line obtained from Loess smoothing.
A resampling-based test to detect person-to-person transmission of infectious disease
Specifically, a loess curve is fit to the log(Y MM − ˆO) versus αMM scatter plot to obtain ˆh.
A statistical framework for the analysis of microarray probe-level data
The residuals from the loess fit are used to estimate the variance of ξ , σ2 N .
A statistical framework for the analysis of microarray probe-level data
The data were then normalized by within-array print-tip loess, and the gene profile model was fitted to the normalized data using limma (Smyth, 2005) in R (R Development Core Team, 2006).
Gene profiling for determining pluripotent genes in a time course microarray experiment
Then i use the non-parametric density estimator loess from R with the default span (smoothing parameter).
Solution to Banff 2 Challenge Based on Likelihood Ratio Test
We set the smoothing parameter h = 0.75 in the LOESS procedure in R.
Test for bandedness of high-dimensional covariance matrices and bandwidth estimation
These have included the F -test, non-parametric methods such as LOESS, regression methods robust to outliers, the testimator approach and Bayesian Information Criterion methods.
Non-Linear Cepheid Period-Luminosity Relation and the Interaction of Stellar Photosphere with Hydrogen Ionization Front
Each array was loess normalized, dye swaps were averaged and each gene was then assigned the median log ratio of all probesets corresponding to the gene.
Correcting gene expression data when neither the unwanted variation nor the factor of interest are observed
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