Results 61 to 70 of about 50,628 (314)
Agribusiness, EarlyView.ABSTRACT Smallholder farmers are reverting to traditional production methods due to the high opportunity costs and unintended consequences of new technologies. This study focuses on row planting technology, which is labor‐intensive and slow without mechanized operations.
Emmanuel Tetteh Jumpah +4 more
wiley +1 more source
Basic exchangeable cations in Finnish mineral soils
Agricultural and Food Science, 1972 The content of exchangeable Ca, Mg, K and Na replaced by neutral ammonium acetate was determined in 470 samples of mineral soils from various parts of Finland, except from Lapland.
Armi Kaila
doaj
Statistical Evaluation of Sleeve Friction to Cone Resistance Ratio in Coarse-Grained Soils
BuildingsThe investigation of soil is a particularly important stage of structural design. Cone penetration tests (CPTs) are the most common soil investigation techniques. The results of these tests provide information about the values of cone resistance (qc) and
Danutė Sližytė +2 more
doaj +1 more source
Liquid Jetting‐Based Miniature Robotic Navigation in Confined Fluidic Spaces
Advanced Intelligent Systems, EarlyView.We introduce a new class of liquid‐jetting‐based miniature robots (JetBots) ranging in size from mm‐to‐cm, featuring a unified approach in design, fabrication, and actuation. They demonstrate fast locomotion (30.3 cm/s), rapid steering (648.8°/s), and diverse functions, such as puncturing soft materials and unlimited cargo sampling and delivery, paving
Debasish Roy, Tianlu Wang
wiley +1 more source
Fractions of inorganic phosphorus in Finnish mineral soils
Agricultural and Food Science, 1964 Inorganic phosphorus in 363 samples of Finnish mineral soils was fractionated by the procedure of CHANG and JACKSON. The average content of total inorganic phosphorus determined as the difference of the total phosphorus and organic phosphorus tended to ...
Armi Kaila
doaj
Agronomy, 2014 The root zone physical condition influences root development and function, which affects turfgrass growth, quality and performance. The temporal variability of root zone properties was investigated in a factorial experiment combining sand layering ...
Raymond Springer +2 more
doaj +1 more source
Effects of principal stress rotation and drainage on the resilient stiffness of railway foundations
, 2013 Railway foundations play an integral role in controlling the stability of the overlying track structure and the maintenance of the overall track geometry.
Mamou, A.
core
American Journal of Agricultural Economics, EarlyView.Abstract Germany's Renewable Energy Sources Act (REA), enacted in 2000 and subsequently amended, subsidized national renewable energy production with fixed feed‐in tariffs for renewable energy sources (RE) from wind, solar, and biogas. Empirical studies suggest that the policy was creating windfall effects for landowners and attribute farmland use ...
Lars Isenhardt +6 more
wiley +1 more source
Zhongguo dizhi zaihai yu fangzhi xuebaoWith the development of arid and semi-arid regions in China, the hazards posed by collapsible sands to engineering construction have become increasingly significant.
Xi ZHANG +4 more
doaj +1 more source
Effect of Relative Density and Stress Level on the Bearing Capacity of Footings on Sand
, 2010 The design of shallow foundations relies on bearing capacity values calculated using empirical procedures that are based in part on solutions obtained using the method of characteristics, which assumes a soil that is perfectly plastic following an ...
Loukidis, D, Salgado, Rodrigo
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