Results 91 to 100 of about 557,066 (314)

A Report on Field Research in Soils

open access: yes, 1967
A compilation of recent experimental results by personnel of the Department of Soil Science, Extension Specialists and Agronomists at the Branch Stations at Crookston, Duluth, Grand Rapids, Lamberton, Morris, Rosemount, and Waseca.
Department of Soils, University of Minnesota
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Quantifying mineral sources of potassium in agricultural soils [PDF]

open access: yes, 2008
Soil potassium (K) reserves are crucial for crop quality and yield in low input agricultural systems. Soils contain varying amounts of K-bearing minerals and differ in their inherent K supply capacity.
Andrist Rangel, Ylva
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Biodegradable Wireless Soil Urea Sensor Using Metamaterial Perfect Absorber for Distributed Deployment in Precision Agriculture

open access: yesAdvanced Materials Technologies, EarlyView.
In this study, we propose a biodegradable wireless soil urea sensor for precision agriculture. The sensor's electromagnetic response varies depending on the urea concentration, allowing the measurement of relative soil urea concentrations by analyzing the time‐transient electromagnetic response.
Yu Tanaami   +5 more
wiley   +1 more source

3D Printing of Soft Robotic Systems: Advances in Fabrication Strategies and Future Trends

open access: yesAdvanced Robotics Research, EarlyView.
Collectively, this review systematically examines 3D‐printed soft robotics, encompassing material selections, function integration, and manufacturing methodologies. Meanwhile, fabrication strategies are analyzed in order of increasing complexity, highlighting persistent challenges with proposed solutions.
Changjiang Liu   +5 more
wiley   +1 more source

Managing soil biodiversity: The New Zealand experience

open access: yes, 2004
Species diversity is a very important component of a healthy soil ecosystem, and a necessary condition for long-term sustainable development. However, it is widely recognised that soil degradation and species extinction are on the increase in New Zealand,
Morad, Munir   +2 more
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Edible Pouch Motors

open access: yesAdvanced Robotics Research, EarlyView.
Edible robotics is an emerging field that leverages edible materials to construct robotic systems. This study presents a method to create thin, lightweight, yet powerful edible soft actuators, namely edible pouch motors. The successful operation of these edible actuators and grippers renders their potential to advance future developments in edible ...
Keigo Takahashi   +3 more
wiley   +1 more source

Proposed Oregon soils data standard: a component of the Oregon geoscience framework theme : draft for comment

open access: yes, 2015
prepared by Framework Soils Committee; endorsed by Oregon Geographic Information Council.Title from PDF cover (viewed on July 20, 2015).Covers OCLC #1293265498, OCLC #1286281878, OCLC #913963467, OCLC #914188988Includes bibliographical referencesMode of ...

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Echinoderm‐Inspired Autonomy for Soft‐Legged Robots

open access: yesAdvanced Robotics Research, EarlyView.
Inspired by echinoderms, a modular soft robot achieves autonomous phototaxis without a central controller or explicit communication. Each limb independently adapts its actuation timing through local sensing and short‐term memory. Coordination emerges purely from physical interactions, demonstrating resilience to changes in morphology, environment, and ...
Harmannus A. H. Schomaker   +2 more
wiley   +1 more source

Brown County, Wisconsin 1929

open access: yes, 1929
Map shows distribution of soil types by color and symbol.; Soils surveyed by W.J. Geib, M.J. Edwards, M.B. Whitson, C.E. Born, and Harold Bandoli.; "Field operations Bureau of Soils 1929."; Relief shown by contours.Color;1:63 ...

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Metal contamination of soils and crops affected by the Chenzhou lead/zinc mine spill (Hunan, China) [PDF]

open access: yes, 2005
In 1985, the collapse of the tailing dam in Chenzhou lead/zinc mine (Hunan, southern China) led to the spread of mining waste spills on the farmland along the Dong River.
Liao, Bo-han, Probst, Anne, Liu, Hongyu
core   +1 more source

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