Results 221 to 230 of about 191,215 (266)
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Icarus, 1967
Abstract Recent laboratory experimental evidence concerning the photometric properties of the lunar surface materials, as well as the Surveyor I photographs, have thrown considerable doubt on the highly underdense, “fairy castle” model of the uppermost lunar surface layer.
John W. Salisbury, Joel E.M. Adler
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Abstract Recent laboratory experimental evidence concerning the photometric properties of the lunar surface materials, as well as the Surveyor I photographs, have thrown considerable doubt on the highly underdense, “fairy castle” model of the uppermost lunar surface layer.
John W. Salisbury, Joel E.M. Adler
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IMPACT OF BIOCHAR ADDITION ON BULK DENSITY OF SOIL
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings, 2019An optimal soil density has become an object of more extensive research at the end of the 50's, and the increase of research took place in the recent decade. Authors of these works assumed that traditional cultivation causes too great scarification of soil.
Maciej Kuboń +4 more
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Tests on Effect of Gravity and Soil Density on Soil Cone Index
Advanced Materials Research, 2013The cone index is one of the important indicators that can describe the comprehensive physical characteristics of lunar regolith. Its closely related to the sink and sideslip of lunar rover and also has widely used in prediction the trafficability, adhesion property, tractive performance of lunar rover.
Rui Yang Shi +5 more
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Soil electromagnetic parameters as functions of frequency, soil density, and soil moisture
Proceedings of the IEEE, 1974Measurements are made to determine the conductivity and dielectric constants of a gray clay loam and a reddish-brown clay loam. The measurements are made as a function of soil density (from 1.2 g/cm3to 1.8 g/cm3), soil moisture (from 0 percent to 20 percent of the dry soil weight), and excitation frequency (from 30 MHz to 4 GHz), using standard ...
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SOIL BULK DENSITY ESTIMATION FOR TILLAGE SYSTEMS AND SOIL TEXTURES
Transactions of the ASAE, 1998Soil bulk density ( .b) is a physical property related to many phenomena, such as plant root development and solute transport in soils. In this study, a comprehensive data search of literature from 1980 to 1997 was made to examine .b as influenced by soil organic matter (OM), soil texture, primary tillage and secondary tillage practices and tillage ...
null Y. Chen +2 more
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Soil Map Density and a Nation’s Wealth and Income
2008Little effort has been made to link soil mapping and soil data density to a nation’s welfare. Soil map density in 31 European countries and 44 low and middle income countries is linked to Gross Domestic Product (GDP) per capita and the number of soil scientists per country.
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A METHOD OF DETERMINING BULK DENSITY OF SOIL
Soil Science, 1959Fox W.E., Page-Hanify D.S.
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Determination and Use of Soil Bulk Density in Relation to Soil Compaction
1994Summary Bulk density and some related terms which quantify soil compactness are defined and discussed. Methods for measuring bulk density are considered in two groups. Direct methods involve the measurement of sample mass and volume, while indirect methods are based on the effect of soil on nuclear radiation.
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Identifying Soil Adsorptive Water by Soil Water Density
Journal of Geotechnical and Geoenvironmental Engineering, 2020Yi Dong, Changfu Wei, Ning Lu
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