Results 1 to 10 of about 213,287 (300)

Cuticle thickening mediates insecticide penetration resistance in Spodoptera litura [PDF]

open access: yesJournal of Advanced Research
Introduction: Long-term and extensive use of chemical pesticides has led to the development of resistance in many important agricultural pests. The mechanisms of resistance formation in pests are complex and variable, and unraveling the resistance ...
Bingjie Wang   +10 more
doaj   +3 more sources

Influence of low gravity on the penetration resistance of lunar regolith [PDF]

open access: yesnpj Microgravity
Lunar surface operations conducted by the United States and the Soviet Union confirmed that penetration resistance is a key indicator for evaluating the engineering properties of lunar regolith.
Jun Chen, Ruilin Li, Shigen Fu
doaj   +2 more sources

Shallow Penetrometer Penetration Resistance [PDF]

open access: yesJournal of Geotechnical and Geoenvironmental Engineering, 2015
Shallow penetrometers—such as the hemiball and toroid—were conceived as potential in situ testing devices with the ability to measure: (1) soil strength parameters during vertical penetration, (2) soil consolidation characteristics during dissipation tests postpenetration, and (3) interface friction during torsional loading.
Stanier, S.A., White, D.J.
core   +5 more sources

Penetration resistance in a latosol under different moisture and penetration speeds [PDF]

open access: yesRevista Ceres, 2013
The soil penetration resistance has been used to represent the compaction situation and several authors have attempted to relate the cone index (CI) with the bulk density.
Walter Francisco Molina Jr   +2 more
doaj   +3 more sources

Analysis of Soil Penetration Resistance in Coffee Plantation Agroecosystems in Bangelan, Malang, East Java

open access: yesPlanta Tropika: Jurnal Agrosains, 2022
Agriculture land shows soil compaction problems due to long-term agricultural cultivation activities. Soil compaction indicator can be seen from the value of soil penetration resistance at different soil depths (0 - 60 cm).
Saniya Reizta Riyanto   +4 more
doaj   +3 more sources

Centrifuge experiment on the penetration test for evaluating undrained strength of deep-sea surface soils

open access: yesInternational Journal of Mining Science and Technology, 2022
Rapid advances in deep-sea mining engineering have created an urgent need for the accurate evaluation of the undrained strength of marine soils, especially surface soils.
Xingsen Guo   +6 more
doaj   +1 more source

Spatial variability of soil penetration resistance in the lowland area cultivated with soybean [PDF]

open access: yesCiência Rural, 2021
: This study determined the spatial variability of soil penetration resistance and yield of the soybean crop in lowland areas. The soil resistance to penetration at four different depths (0 to 0.10 m; 0.11 to 0.20 m; 0.21 to 0.30 m and 0.31 to 0.40 m ...
Edgar Salis Brasil Neto   +5 more
doaj   +1 more source

Penetration Resistance and Penetrability in Pyramidal (Nano)Indentations [PDF]

open access: yesScanning, 2012
SummaryPyramidal nanoindentation loading curves were linearly plotted, normal force versus (penetration depth)3/2. The slope is penetration resistance k, its inverse penetrability. Linear correlations verify. All contributions to the indentation are included in the penetrability.
Gerd, Kaupp, Mohammad Reza, Naimi-Jamal
openaire   +2 more sources

FACTORS INFLUENCING THE SOIL PENETRATION RESISTANCE OF SOME VERTISOLS IN EGYPT. [PDF]

open access: yesJournal of Soil Sciences and Agricultural Engineering, 2002
The current study aims to determine the soil penetration resistance of some Vertisols as well as to study the main contributing soil factors. Investigation of undisturoed sou samples, of eighteen profiles represent the Vertisols in E~ypt, showed that ...
I. S. Rahim, F. B. Labib, Th. K. Ghabour
doaj   +1 more source

Estimation of the level of recreational transformation of public green spaces by indicators of soil penetration resistance

open access: yesAgrology, 2020
The article shows the possibility of assessing the level of recreational transformation of public green spaces in terms of the soil penetration resistance and proved that the profile distribution of soil penetration resistance values is an information ...
P. Teluk   +5 more
doaj   +1 more source

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